ramips: add linux 4.4 support, update mt7621 subtarget to 4.4

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 48951

package/kernel/linux/modules/usb.mk

@@ -1596,7 +1596,11 @@ endef
 
 $(eval $(call KernelPackage,usbmon))
 
-XHCI_FILES := $(wildcard $(patsubst %,$(LINUX_DIR)/drivers/usb/host/%.ko,xhci-hcd xhci-pci xhci-plat-hcd))
+XHCI_MODULES := xhci-hcd xhci-pci xhci-plat-hcd
+ifdef CONFIG_TARGET_ramips_mt7621
+  XHCI_MODULES += xhci-mtk
+endif
+XHCI_FILES := $(wildcard $(patsubst %,$(LINUX_DIR)/drivers/usb/host/%.ko,$(XHCI_MODULES)))
 XHCI_AUTOLOAD := $(patsubst $(LINUX_DIR)/drivers/usb/host/%.ko,%,$(XHCI_FILES))
 
 define KernelPackage/usb3
@@ -1609,6 +1613,7 @@ define KernelPackage/usb3
 	CONFIG_USB_XHCI_PCI \
 	CONFIG_USB_XHCI_PLATFORM \
 	CONFIG_USB_XHCI_MVEBU=y \
+	CONFIG_USB_XHCI_MTK \
 	CONFIG_USB_XHCI_HCD_DEBUGGING=n
   FILES:= \
 	$(XHCI_FILES)

target/linux/ramips/Makefile

@@ -13,7 +13,7 @@ SUBTARGETS:=rt305x mt7620 mt7621 mt7628 mt7688 rt3883 rt288x
 FEATURES:=squashfs gpio mips16
 MAINTAINER:=John Crispin <[email protected]>
 
-KERNEL_PATCHVER:=4.3
+KERNEL_PATCHVER:=4.4
 
 include $(INCLUDE_DIR)/target.mk
 DEFAULT_PACKAGES += \

target/linux/ramips/dts/mt7621.dtsi

@@ -248,8 +248,12 @@
 	xhci@1E1C0000 {
 		status = "okay";
 
-		compatible = "xhci-platform";
-		reg = <0x1E1C0000 4000>;
+		compatible = "mediatek,mt8173-xhci";
+		reg = <0x1e1c0000 0x1000
+		       0x1e1d0700 0x0100>;
+
+		clocks = <&sysclock>;
+		clock-names = "sys_ck";
 
 		interrupt-parent = <&gic>;
 		interrupts = <GIC_SHARED 22 IRQ_TYPE_LEVEL_HIGH>;

target/linux/ramips/mt7621/config-4.3 → target/linux/ramips/mt7621/config-4.4

@@ -1,4 +1,5 @@
 CONFIG_ARCH_BINFMT_ELF_STATE=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
 CONFIG_ARCH_DISCARD_MEMBLOCK=y
 CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
 CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
@@ -11,6 +12,7 @@ CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
 CONFIG_ARCH_REQUIRE_GPIOLIB=y
 CONFIG_ARCH_SUPPORTS_UPROBES=y
 CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
 CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
 CONFIG_BOARD_SCACHE=y
 CONFIG_BOUNCE=y
@@ -20,6 +22,7 @@ CONFIG_CEVT_R4K=y
 CONFIG_CLKDEV_LOOKUP=y
 CONFIG_CLKSRC_MIPS_GIC=y
 CONFIG_CLKSRC_OF=y
+CONFIG_CLKSRC_PROBE=y
 CONFIG_CLONE_BACKWARDS=y
 CONFIG_CMDLINE="rootfstype=squashfs,jffs2"
 CONFIG_CMDLINE_BOOL=y
@@ -63,6 +66,7 @@ CONFIG_GENERIC_IRQ_SHOW=y
 CONFIG_GENERIC_PCI_IOMAP=y
 CONFIG_GENERIC_SCHED_CLOCK=y
 CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_DEVRES=y
 CONFIG_GPIO_MT7621=y
@@ -98,6 +102,7 @@ CONFIG_HAVE_GENERIC_DMA_COHERENT=y
 CONFIG_HAVE_IDE=y
 CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
 CONFIG_HAVE_KVM=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
 CONFIG_HAVE_MACH_CLKDEV=y
 CONFIG_HAVE_MEMBLOCK=y
 CONFIG_HAVE_MEMBLOCK_NODE_MAP=y
@@ -119,15 +124,18 @@ CONFIG_IRQ_WORK=y
 CONFIG_LIBFDT=y
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
-# CONFIG_MACH_INGENIC is not set
-# CONFIG_MACH_LOONGSON32 is not set
-# CONFIG_MACH_LOONGSON64 is not set
 CONFIG_MDIO_BOARDINFO=y
 CONFIG_MIPS=y
+CONFIG_MIPS_CLOCK_VSYSCALL=y
 CONFIG_MIPS_CM=y
+# CONFIG_MIPS_CMDLINE_DTB_EXTEND is not set
+# CONFIG_MIPS_CMDLINE_FROM_BOOTLOADER is not set
+CONFIG_MIPS_CMDLINE_FROM_DTB=y
 CONFIG_MIPS_CPC=y
 CONFIG_MIPS_CPS=y
+# CONFIG_MIPS_CPS_NS16550 is not set
 CONFIG_MIPS_CPU_SCACHE=y
+# CONFIG_MIPS_ELF_APPENDED_DTB is not set
 CONFIG_MIPS_GIC=y
 CONFIG_MIPS_GIC_IPI=y
 # CONFIG_MIPS_HUGE_TLB_SUPPORT is not set
@@ -184,7 +192,6 @@ CONFIG_OF_MTD=y
 CONFIG_OF_NET=y
 CONFIG_OF_PCI=y
 CONFIG_OF_PCI_IRQ=y
-CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_PCI=y
 CONFIG_PCI_DISABLE_COMMON_QUIRKS=y
 CONFIG_PCI_DOMAINS=y
@@ -200,6 +207,7 @@ CONFIG_POWER_RESET_GPIO=y
 CONFIG_POWER_SUPPLY=y
 CONFIG_RALINK=y
 # CONFIG_RALINK_WDT is not set
+CONFIG_RATIONAL=y
 CONFIG_RCU_STALL_COMMON=y
 CONFIG_RESET_CONTROLLER=y
 CONFIG_RFS_ACCEL=y
@@ -209,12 +217,9 @@ CONFIG_SCHED_HRTICK=y
 # CONFIG_SCHED_INFO is not set
 CONFIG_SCHED_SMT=y
 # CONFIG_SCSI_DMA is not set
+# CONFIG_SERIAL_8250_FSL is not set
 CONFIG_SERIAL_8250_NR_UARTS=4
 CONFIG_SERIAL_OF_PLATFORM=y
-# CONFIG_SG_SPLIT is not set
-# CONFIG_SLAB is not set
-CONFIG_SLUB=y
-CONFIG_SLUB_CPU_PARTIAL=y
 CONFIG_SMP=y
 CONFIG_SMP_UP=y
 # CONFIG_SOC_MT7620 is not set
@@ -227,8 +232,6 @@ CONFIG_SPI_MASTER=y
 CONFIG_SPI_MT7621=y
 # CONFIG_SPI_RT2880 is not set
 CONFIG_SRCU=y
-CONFIG_STOP_MACHINE=y
-# CONFIG_SUNXI_SRAM is not set
 CONFIG_SWCONFIG=y
 CONFIG_SYNC_R4K=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y

target/linux/ramips/patches-4.4/0001-arch-mips-ralink-add-mt7621-support.patch

@@ -0,0 +1,437 @@
+From 450b6e8257e22708173d0c1c86d34394fba0c5eb Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:08:31 +0100
+Subject: [PATCH 01/53] arch: mips: ralink: add mt7621 support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/include/asm/mach-ralink/irq.h    |    9 +
+ arch/mips/include/asm/mach-ralink/mt7621.h |   39 ++++
+ arch/mips/kernel/mips-cm.c                 |    4 +-
+ arch/mips/kernel/vmlinux.lds.S             |    1 +
+ arch/mips/ralink/Kconfig                   |   18 ++
+ arch/mips/ralink/Makefile                  |    7 +-
+ arch/mips/ralink/Platform                  |    5 +
+ arch/mips/ralink/irq-gic.c                 |  268 ++++++++++++++++++++++++++++
+ arch/mips/ralink/malta-amon.c              |   81 +++++++++
+ arch/mips/ralink/mt7621.c                  |  209 ++++++++++++++++++++++
+ 10 files changed, 638 insertions(+), 3 deletions(-)
+ create mode 100644 arch/mips/include/asm/mach-ralink/irq.h
+ create mode 100644 arch/mips/include/asm/mach-ralink/mt7621.h
+ create mode 100644 arch/mips/ralink/irq-gic.c
+ create mode 100644 arch/mips/ralink/malta-amon.c
+ create mode 100644 arch/mips/ralink/mt7621.c
+
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ralink/irq.h
+@@ -0,0 +1,9 @@
++#ifndef __ASM_MACH_RALINK_IRQ_H
++#define __ASM_MACH_RALINK_IRQ_H
++
++#define GIC_NUM_INTRS	64
++#define NR_IRQS 256
++
++#include_next <irq.h>
++
++#endif
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ralink/mt7621.h
+@@ -0,0 +1,42 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Parts of this file are based on Ralink's 2.6.21 BSP
++ *
++ * Copyright (C) 2008-2011 Gabor Juhos <[email protected]>
++ * Copyright (C) 2008 Imre Kaloz <[email protected]>
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#ifndef _MT7621_REGS_H_
++#define _MT7621_REGS_H_
++
++#define MT7621_PALMBUS_BASE		0x1C000000
++#define MT7621_PALMBUS_SIZE		0x03FFFFFF
++
++#define MT7621_SYSC_BASE		0x1E000000
++
++#define SYSC_REG_CHIP_NAME0		0x00
++#define SYSC_REG_CHIP_NAME1		0x04
++#define SYSC_REG_CHIP_REV		0x0c
++#define SYSC_REG_SYSTEM_CONFIG0		0x10
++#define SYSC_REG_SYSTEM_CONFIG1		0x14
++
++#define CHIP_REV_PKG_MASK		0x1
++#define CHIP_REV_PKG_SHIFT		16
++#define CHIP_REV_VER_MASK		0xf
++#define CHIP_REV_VER_SHIFT		8
++#define CHIP_REV_ECO_MASK		0xf
++
++#define MT7621_DRAM_BASE                0x0
++#define MT7621_DDR2_SIZE_MIN		32
++#define MT7621_DDR2_SIZE_MAX		256
++
++#define MT7621_CHIP_NAME0		0x3637544D
++#define MT7621_CHIP_NAME1		0x20203132
++
++#define MIPS_GIC_IRQ_BASE           (MIPS_CPU_IRQ_BASE + 8)
++
++#endif
+--- a/arch/mips/kernel/vmlinux.lds.S
++++ b/arch/mips/kernel/vmlinux.lds.S
+@@ -53,6 +53,7 @@ SECTIONS
+ 	/* read-only */
+ 	_text = .;	/* Text and read-only data */
+ 	.text : {
++		/*. = . + 0x8000; */
+ 		TEXT_TEXT
+ 		SCHED_TEXT
+ 		LOCK_TEXT
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -12,6 +12,11 @@ config RALINK_ILL_ACC
+ 	depends on SOC_RT305X
+ 	default y
+ 
++config IRQ_INTC
++	bool
++	default y
++	depends on !SOC_MT7621
++
+ choice
+ 	prompt "Ralink SoC selection"
+ 	default SOC_RT305X
+@@ -34,6 +39,16 @@ choice
+ 	config SOC_MT7620
+ 		bool "MT7620/8"
+ 
++	config SOC_MT7621
++		bool "MT7621"
++		select MIPS_CPU_SCACHE
++		select SYS_SUPPORTS_MULTITHREADING
++		select SYS_SUPPORTS_SMP
++		select SYS_SUPPORTS_MIPS_CPS
++		select MIPS_GIC
++		select COMMON_CLK
++		select CLKSRC_MIPS_GIC
++		select HW_HAS_PCI
+ endchoice
+ 
+ choice
+@@ -65,6 +80,10 @@ choice
+ 		depends on SOC_MT7620
+ 		select BUILTIN_DTB
+ 
++	config DTB_MT7621_EVAL
++		bool "MT7621 eval kit"
++		depends on SOC_MT7621
++
+ endchoice
+ 
+ endif
+--- a/arch/mips/ralink/Makefile
++++ b/arch/mips/ralink/Makefile
+@@ -6,16 +6,24 @@
+ # Copyright (C) 2009-2011 Gabor Juhos <[email protected]>
+ # Copyright (C) 2013 John Crispin <[email protected]>
+ 
+-obj-y := prom.o of.o reset.o clk.o irq.o timer.o
++obj-y := prom.o of.o reset.o
++
++ifndef CONFIG_MIPS_GIC
++	obj-y += clk.o timer.o
++endif
+ 
+ obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o
+ 
+ obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o
+ 
++obj-$(CONFIG_IRQ_INTC) += irq.o
++obj-$(CONFIG_MIPS_GIC) += irq-gic.o timer-gic.o
++
+ obj-$(CONFIG_SOC_RT288X) += rt288x.o
+ obj-$(CONFIG_SOC_RT305X) += rt305x.o
+ obj-$(CONFIG_SOC_RT3883) += rt3883.o
+ obj-$(CONFIG_SOC_MT7620) += mt7620.o
++obj-$(CONFIG_SOC_MT7621) += mt7621.o
+ 
+ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+ 
+--- a/arch/mips/ralink/Platform
++++ b/arch/mips/ralink/Platform
+@@ -27,3 +27,8 @@ cflags-$(CONFIG_SOC_RT3883)	+= -I$(srctr
+ #
+ load-$(CONFIG_SOC_MT7620)	+= 0xffffffff80000000
+ cflags-$(CONFIG_SOC_MT7620)	+= -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7620
++
++# Ralink MT7621
++#
++load-$(CONFIG_SOC_MT7621)	+= 0xffffffff80001000
++cflags-$(CONFIG_SOC_MT7621)	+= -I$(srctree)/arch/mips/include/asm/mach-ralink/mt7621
+--- /dev/null
++++ b/arch/mips/ralink/irq-gic.c
+@@ -0,0 +1,18 @@
++#include <linux/init.h>
++
++#include <linux/of.h>
++#include <linux/irqchip.h>
++#include <linux/irqchip/mips-gic.h>
++
++int get_c0_perfcount_int(void)
++{
++	return gic_get_c0_perfcount_int();
++}
++EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
++
++void __init
++arch_init_irq(void)
++{
++	irqchip_init();
++}
++
+--- /dev/null
++++ b/arch/mips/ralink/mt7621.c
+@@ -0,0 +1,223 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Parts of this file are based on Ralink's 2.6.21 BSP
++ *
++ * Copyright (C) 2008-2011 Gabor Juhos <[email protected]>
++ * Copyright (C) 2008 Imre Kaloz <[email protected]>
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++
++#include <asm/mipsregs.h>
++#include <asm/smp-ops.h>
++#include <asm/mips-cm.h>
++#include <asm/mips-cpc.h>
++#include <asm/mach-ralink/ralink_regs.h>
++#include <asm/mach-ralink/mt7621.h>
++
++#include <pinmux.h>
++
++#include "common.h"
++
++#define SYSC_REG_SYSCFG		0x10
++#define SYSC_REG_CPLL_CLKCFG0	0x2c
++#define SYSC_REG_CUR_CLK_STS	0x44
++#define CPU_CLK_SEL		(BIT(30) | BIT(31))
++
++#define MT7621_GPIO_MODE_UART1		1
++#define MT7621_GPIO_MODE_I2C		2
++#define MT7621_GPIO_MODE_UART3_MASK	0x3
++#define MT7621_GPIO_MODE_UART3_SHIFT	3
++#define MT7621_GPIO_MODE_UART3_GPIO	1
++#define MT7621_GPIO_MODE_UART2_MASK	0x3
++#define MT7621_GPIO_MODE_UART2_SHIFT	5
++#define MT7621_GPIO_MODE_UART2_GPIO	1
++#define MT7621_GPIO_MODE_JTAG		7
++#define MT7621_GPIO_MODE_WDT_MASK	0x3
++#define MT7621_GPIO_MODE_WDT_SHIFT	8
++#define MT7621_GPIO_MODE_WDT_GPIO	1
++#define MT7621_GPIO_MODE_PCIE_RST	0
++#define MT7621_GPIO_MODE_PCIE_REF	2
++#define MT7621_GPIO_MODE_PCIE_MASK	0x3
++#define MT7621_GPIO_MODE_PCIE_SHIFT	10
++#define MT7621_GPIO_MODE_PCIE_GPIO	1
++#define MT7621_GPIO_MODE_MDIO_MASK	0x3
++#define MT7621_GPIO_MODE_MDIO_SHIFT	12
++#define MT7621_GPIO_MODE_MDIO_GPIO	1
++#define MT7621_GPIO_MODE_RGMII1		14
++#define MT7621_GPIO_MODE_RGMII2		15
++#define MT7621_GPIO_MODE_SPI_MASK	0x3
++#define MT7621_GPIO_MODE_SPI_SHIFT	16
++#define MT7621_GPIO_MODE_SPI_GPIO	1
++#define MT7621_GPIO_MODE_SDHCI_MASK	0x3
++#define MT7621_GPIO_MODE_SDHCI_SHIFT	18
++#define MT7621_GPIO_MODE_SDHCI_GPIO	1
++
++static struct rt2880_pmx_func uart1_grp[] =  { FUNC("uart1", 0, 1, 2) };
++static struct rt2880_pmx_func i2c_grp[] =  { FUNC("i2c", 0, 3, 2) };
++static struct rt2880_pmx_func uart3_grp[] = {
++	FUNC("uart3", 0, 5, 4),
++	FUNC("i2s", 2, 5, 4),
++	FUNC("spdif3", 3, 5, 4),
++};
++static struct rt2880_pmx_func uart2_grp[] = {
++	FUNC("uart2", 0, 9, 4),
++	FUNC("pcm", 2, 9, 4),
++	FUNC("spdif2", 3, 9, 4),
++};
++static struct rt2880_pmx_func jtag_grp[] = { FUNC("jtag", 0, 13, 5) };
++static struct rt2880_pmx_func wdt_grp[] = {
++	FUNC("wdt rst", 0, 18, 1),
++	FUNC("wdt refclk", 2, 18, 1),
++};
++static struct rt2880_pmx_func pcie_rst_grp[] = {
++	FUNC("pcie rst", MT7621_GPIO_MODE_PCIE_RST, 19, 1),
++	FUNC("pcie refclk", MT7621_GPIO_MODE_PCIE_REF, 19, 1)
++};
++static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 20, 2) };
++static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 22, 12) };
++static struct rt2880_pmx_func spi_grp[] = {
++	FUNC("spi", 0, 34, 7),
++	FUNC("nand1", 2, 34, 7),
++};
++static struct rt2880_pmx_func sdhci_grp[] = {
++	FUNC("sdhci", 0, 41, 8),
++	FUNC("nand2", 2, 41, 8),
++};
++static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 49, 12) };
++
++static struct rt2880_pmx_group mt7621_pinmux_data[] = {
++	GRP("uart1", uart1_grp, 1, MT7621_GPIO_MODE_UART1),
++	GRP("i2c", i2c_grp, 1, MT7621_GPIO_MODE_I2C),
++	GRP_G("uart3", uart3_grp, MT7621_GPIO_MODE_UART3_MASK,
++		MT7621_GPIO_MODE_UART3_GPIO, MT7621_GPIO_MODE_UART3_SHIFT),
++	GRP_G("uart2", uart2_grp, MT7621_GPIO_MODE_UART2_MASK,
++		MT7621_GPIO_MODE_UART2_GPIO, MT7621_GPIO_MODE_UART2_SHIFT),
++	GRP("jtag", jtag_grp, 1, MT7621_GPIO_MODE_JTAG),
++	GRP_G("wdt", wdt_grp, MT7621_GPIO_MODE_WDT_MASK,
++		MT7621_GPIO_MODE_WDT_GPIO, MT7621_GPIO_MODE_WDT_SHIFT),
++	GRP_G("pcie", pcie_rst_grp, MT7621_GPIO_MODE_PCIE_MASK,
++		MT7621_GPIO_MODE_PCIE_GPIO, MT7621_GPIO_MODE_PCIE_SHIFT),
++	GRP_G("mdio", mdio_grp, MT7621_GPIO_MODE_MDIO_MASK,
++		MT7621_GPIO_MODE_MDIO_GPIO, MT7621_GPIO_MODE_MDIO_SHIFT),
++	GRP("rgmii2", rgmii2_grp, 1, MT7621_GPIO_MODE_RGMII2),
++	GRP_G("spi", spi_grp, MT7621_GPIO_MODE_SPI_MASK,
++		MT7621_GPIO_MODE_SPI_GPIO, MT7621_GPIO_MODE_SPI_SHIFT),
++	GRP_G("sdhci", sdhci_grp, MT7621_GPIO_MODE_SDHCI_MASK,
++		MT7621_GPIO_MODE_SDHCI_GPIO, MT7621_GPIO_MODE_SDHCI_SHIFT),
++	GRP("rgmii1", rgmii1_grp, 1, MT7621_GPIO_MODE_RGMII1),
++	{ 0 }
++};
++
++phys_addr_t mips_cpc_default_phys_base() {
++	panic("Cannot detect cpc address");
++}
++
++void __init ralink_clk_init(void)
++{
++	int cpu_fdiv = 0;
++	int cpu_ffrac = 0;
++	int fbdiv = 0;
++	u32 clk_sts, syscfg;
++	u8 clk_sel = 0, xtal_mode;
++	u32 cpu_clk;
++
++	if ((rt_sysc_r32(SYSC_REG_CPLL_CLKCFG0) & CPU_CLK_SEL) != 0)
++		clk_sel = 1;
++
++	switch (clk_sel) {
++	case 0:
++		clk_sts = rt_sysc_r32(SYSC_REG_CUR_CLK_STS);
++		cpu_fdiv = ((clk_sts >> 8) & 0x1F);
++		cpu_ffrac = (clk_sts & 0x1F);
++		cpu_clk = (500 * cpu_ffrac / cpu_fdiv) * 1000 * 1000;
++		break;
++
++	case 1:
++		fbdiv = ((rt_sysc_r32(0x648) >> 4) & 0x7F) + 1;
++		syscfg = rt_sysc_r32(SYSC_REG_SYSCFG);
++		xtal_mode = (syscfg >> 6) & 0x7;
++		if(xtal_mode >= 6) { //25Mhz Xtal
++			cpu_clk = 25 * fbdiv * 1000 * 1000;
++		} else if(xtal_mode >=3) { //40Mhz Xtal
++			cpu_clk = 40 * fbdiv * 1000 * 1000;
++		} else { // 20Mhz Xtal
++			cpu_clk = 20 * fbdiv * 1000 * 1000;
++		}
++		break;
++	}
++}
++
++void __init ralink_of_remap(void)
++{
++	rt_sysc_membase = plat_of_remap_node("mtk,mt7621-sysc");
++	rt_memc_membase = plat_of_remap_node("mtk,mt7621-memc");
++
++	if (!rt_sysc_membase || !rt_memc_membase)
++		panic("Failed to remap core resources");
++}
++
++void prom_soc_init(struct ralink_soc_info *soc_info)
++{
++	void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7621_SYSC_BASE);
++	unsigned char *name = NULL;
++	u32 n0;
++	u32 n1;
++	u32 rev;
++
++	n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
++	n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
++
++	if (n0 == MT7621_CHIP_NAME0 && n1 == MT7621_CHIP_NAME1) {
++		name = "MT7621";
++		soc_info->compatible = "mtk,mt7621-soc";
++	} else {
++		panic("mt7621: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
++	}
++
++	rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
++
++	snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
++		"MediaTek %s ver:%u eco:%u",
++		name,
++		(rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
++		(rev & CHIP_REV_ECO_MASK));
++
++	soc_info->mem_size_min = MT7621_DDR2_SIZE_MIN;
++	soc_info->mem_size_max = MT7621_DDR2_SIZE_MAX;
++	soc_info->mem_base = MT7621_DRAM_BASE;
++
++	rt2880_pinmux_data = mt7621_pinmux_data;
++
++	/* Early detection of CMP support */
++	mips_cm_probe();
++	mips_cpc_probe();
++
++	if (mips_cm_numiocu()) {
++		/* mips_cm_probe() wipes out bootloader
++		   config for CM regions and we have to configure them
++		   again. This SoC cannot talk to pamlbus devices
++		   witout proper iocu region set up.
++
++		   FIXME: it would be better to do this with values
++		   from DT, but we need this very early because
++		   without this we cannot talk to pretty much anything
++		   including serial.
++		*/
++		write_gcr_reg0_base(MT7621_PALMBUS_BASE);
++		write_gcr_reg0_mask(~MT7621_PALMBUS_SIZE | CM_GCR_REGn_MASK_CMTGT_IOCU0);
++	}
++
++	if (!register_cps_smp_ops())
++		return;
++	if (!register_cmp_smp_ops())
++		return;
++	if (!register_vsmp_smp_ops())
++		return;
++}
+--- /dev/null
++++ b/arch/mips/ralink/timer-gic.c
+@@ -0,0 +1,15 @@
++#include <linux/init.h>
++
++#include <linux/of.h>
++#include <linux/clk-provider.h>
++#include <linux/clocksource.h>
++
++#include "common.h"
++
++void __init plat_time_init(void)
++{
++	ralink_of_remap();
++
++	of_clk_init(NULL);
++	clocksource_probe();
++}

target/linux/ramips/patches-4.4/0002-MIPS-ralink-add-MT7621-defconfig.patch

@@ -0,0 +1,211 @@
+From c96f2cc4d5f6e1bb11f3e7e04a7e21503a214d7c Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 27 Jan 2014 13:12:41 +0000
+Subject: [PATCH 02/53] MIPS: ralink: add MT7621 defconfig
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/configs/mt7621_defconfig |  197 ++++++++++++++++++++++++++++++++++++
+ 1 file changed, 197 insertions(+)
+ create mode 100644 arch/mips/configs/mt7621_defconfig
+
+--- /dev/null
++++ b/arch/mips/configs/mt7621_defconfig
+@@ -0,0 +1,197 @@
++# CONFIG_LOCALVERSION_AUTO is not set
++CONFIG_SYSVIPC=y
++CONFIG_HIGH_RES_TIMERS=y
++CONFIG_RCU_FANOUT=32
++CONFIG_UIDGID_STRICT_TYPE_CHECKS=y
++CONFIG_BLK_DEV_INITRD=y
++CONFIG_INITRAMFS_SOURCE="/openwrt/trunk/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/root-ramips /openwrt/trunk/target/linux/generic/image/initramfs-base-files.txt"
++CONFIG_INITRAMFS_ROOT_UID=1000
++CONFIG_INITRAMFS_ROOT_GID=1000
++# CONFIG_RD_GZIP is not set
++CONFIG_CC_OPTIMIZE_FOR_SIZE=y
++# CONFIG_AIO is not set
++CONFIG_EMBEDDED=y
++# CONFIG_VM_EVENT_COUNTERS is not set
++# CONFIG_SLUB_DEBUG is not set
++# CONFIG_COMPAT_BRK is not set
++CONFIG_MODULES=y
++CONFIG_MODULE_UNLOAD=y
++# CONFIG_BLK_DEV_BSG is not set
++CONFIG_PARTITION_ADVANCED=y
++# CONFIG_IOSCHED_CFQ is not set
++CONFIG_SMP=y
++CONFIG_NR_CPUS=4
++CONFIG_SCHED_SMT=y
++# CONFIG_COMPACTION is not set
++# CONFIG_CROSS_MEMORY_ATTACH is not set
++# CONFIG_SECCOMP is not set
++CONFIG_HZ_100=y
++CONFIG_CMDLINE_BOOL=y
++CONFIG_CMDLINE="rootfstype=squashfs,jffs2"
++# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
++CONFIG_NET=y
++CONFIG_PACKET=y
++CONFIG_UNIX=y
++CONFIG_INET=y
++CONFIG_IP_MULTICAST=y
++CONFIG_IP_ADVANCED_ROUTER=y
++CONFIG_IP_MULTIPLE_TABLES=y
++CONFIG_IP_ROUTE_MULTIPATH=y
++CONFIG_IP_ROUTE_VERBOSE=y
++CONFIG_IP_MROUTE=y
++CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
++CONFIG_ARPD=y
++CONFIG_SYN_COOKIES=y
++# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
++# CONFIG_INET_XFRM_MODE_TUNNEL is not set
++# CONFIG_INET_XFRM_MODE_BEET is not set
++# CONFIG_INET_LRO is not set
++# CONFIG_INET_DIAG is not set
++CONFIG_TCP_CONG_ADVANCED=y
++# CONFIG_TCP_CONG_BIC is not set
++# CONFIG_TCP_CONG_WESTWOOD is not set
++# CONFIG_TCP_CONG_HTCP is not set
++CONFIG_IPV6_PRIVACY=y
++# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
++# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
++# CONFIG_INET6_XFRM_MODE_BEET is not set
++# CONFIG_IPV6_SIT is not set
++CONFIG_IPV6_MULTIPLE_TABLES=y
++CONFIG_IPV6_SUBTREES=y
++CONFIG_IPV6_MROUTE=y
++CONFIG_NETFILTER=y
++# CONFIG_BRIDGE_NETFILTER is not set
++CONFIG_NF_CONNTRACK=m
++CONFIG_NF_CONNTRACK_FTP=m
++CONFIG_NF_CONNTRACK_IRC=m
++CONFIG_NETFILTER_XT_MARK=m
++CONFIG_NETFILTER_XT_TARGET_LOG=m
++CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
++CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
++CONFIG_NETFILTER_XT_MATCH_COMMENT=m
++CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
++CONFIG_NETFILTER_XT_MATCH_LIMIT=m
++CONFIG_NETFILTER_XT_MATCH_MAC=m
++CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
++CONFIG_NETFILTER_XT_MATCH_STATE=m
++CONFIG_NETFILTER_XT_MATCH_TIME=m
++CONFIG_NF_CONNTRACK_IPV4=m
++# CONFIG_NF_CONNTRACK_PROC_COMPAT is not set
++CONFIG_IP_NF_IPTABLES=m
++CONFIG_IP_NF_FILTER=m
++CONFIG_IP_NF_TARGET_REJECT=m
++CONFIG_NF_NAT_IPV4=m
++CONFIG_IP_NF_TARGET_MASQUERADE=m
++CONFIG_IP_NF_TARGET_REDIRECT=m
++CONFIG_IP_NF_MANGLE=m
++CONFIG_IP_NF_RAW=m
++CONFIG_NF_CONNTRACK_IPV6=m
++CONFIG_IP6_NF_IPTABLES=m
++CONFIG_IP6_NF_MATCH_AH=m
++CONFIG_IP6_NF_MATCH_EUI64=m
++CONFIG_IP6_NF_MATCH_FRAG=m
++CONFIG_IP6_NF_MATCH_OPTS=m
++CONFIG_IP6_NF_MATCH_IPV6HEADER=m
++CONFIG_IP6_NF_MATCH_MH=m
++CONFIG_IP6_NF_MATCH_RT=m
++CONFIG_IP6_NF_FILTER=m
++CONFIG_IP6_NF_TARGET_REJECT=m
++CONFIG_IP6_NF_MANGLE=m
++CONFIG_IP6_NF_RAW=m
++CONFIG_BRIDGE=m
++# CONFIG_BRIDGE_IGMP_SNOOPING is not set
++CONFIG_VLAN_8021Q=y
++CONFIG_NET_SCHED=y
++CONFIG_NET_SCH_FQ_CODEL=y
++CONFIG_HAMRADIO=y
++CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
++# CONFIG_FIRMWARE_IN_KERNEL is not set
++CONFIG_MTD=y
++CONFIG_MTD_CMDLINE_PARTS=y
++CONFIG_MTD_BLOCK=y
++CONFIG_MTD_CFI=y
++CONFIG_MTD_CFI_AMDSTD=y
++CONFIG_MTD_COMPLEX_MAPPINGS=y
++CONFIG_MTD_PHYSMAP=y
++CONFIG_MTD_M25P80=y
++CONFIG_EEPROM_93CX6=m
++CONFIG_SCSI=y
++CONFIG_BLK_DEV_SD=y
++CONFIG_NETDEVICES=y
++# CONFIG_NET_PACKET_ENGINE is not set
++# CONFIG_NET_VENDOR_WIZNET is not set
++CONFIG_PHYLIB=y
++CONFIG_SWCONFIG=y
++CONFIG_PPP=m
++CONFIG_PPP_FILTER=y
++CONFIG_PPP_MULTILINK=y
++CONFIG_PPPOE=m
++CONFIG_PPP_ASYNC=m
++CONFIG_ISDN=y
++# CONFIG_INPUT is not set
++# CONFIG_SERIO is not set
++# CONFIG_VT is not set
++# CONFIG_LEGACY_PTYS is not set
++# CONFIG_DEVKMEM is not set
++CONFIG_SERIAL_8250=y
++# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
++CONFIG_SERIAL_8250_CONSOLE=y
++# CONFIG_SERIAL_8250_PCI is not set
++CONFIG_SERIAL_8250_RUNTIME_UARTS=2
++CONFIG_SPI=y
++CONFIG_GPIOLIB=y
++CONFIG_GPIO_SYSFS=y
++# CONFIG_HWMON is not set
++CONFIG_WATCHDOG=y
++CONFIG_WATCHDOG_CORE=y
++# CONFIG_VGA_ARB is not set
++CONFIG_USB=y
++CONFIG_USB_XHCI_HCD=y
++CONFIG_USB_XHCI_PLATFORM=y
++CONFIG_USB_MT7621_XHCI_PLATFORM=y
++CONFIG_USB_STORAGE=y
++CONFIG_USB_PHY=y
++CONFIG_NEW_LEDS=y
++CONFIG_LEDS_CLASS=y
++CONFIG_LEDS_GPIO=m
++CONFIG_LEDS_TRIGGERS=y
++CONFIG_LEDS_TRIGGER_TIMER=y
++CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
++CONFIG_STAGING=y
++CONFIG_USB_DWC2=m
++# CONFIG_IOMMU_SUPPORT is not set
++CONFIG_RESET_CONTROLLER=y
++# CONFIG_FIRMWARE_MEMMAP is not set
++# CONFIG_DNOTIFY is not set
++# CONFIG_PROC_PAGE_MONITOR is not set
++CONFIG_TMPFS=y
++CONFIG_TMPFS_XATTR=y
++CONFIG_JFFS2_FS=y
++CONFIG_JFFS2_SUMMARY=y
++CONFIG_JFFS2_FS_XATTR=y
++# CONFIG_JFFS2_FS_POSIX_ACL is not set
++# CONFIG_JFFS2_FS_SECURITY is not set
++CONFIG_JFFS2_COMPRESSION_OPTIONS=y
++# CONFIG_JFFS2_ZLIB is not set
++CONFIG_SQUASHFS=y
++# CONFIG_SQUASHFS_ZLIB is not set
++CONFIG_SQUASHFS_XZ=y
++CONFIG_PRINTK_TIME=y
++# CONFIG_ENABLE_MUST_CHECK is not set
++CONFIG_FRAME_WARN=1024
++CONFIG_MAGIC_SYSRQ=y
++CONFIG_STRIP_ASM_SYMS=y
++# CONFIG_UNUSED_SYMBOLS is not set
++CONFIG_DEBUG_FS=y
++# CONFIG_SCHED_DEBUG is not set
++CONFIG_DEBUG_INFO=y
++CONFIG_DEBUG_INFO_REDUCED=y
++CONFIG_RCU_CPU_STALL_TIMEOUT=60
++# CONFIG_FTRACE is not set
++CONFIG_CRYPTO_ARC4=m
++# CONFIG_CRYPTO_ANSI_CPRNG is not set
++# CONFIG_VIRTUALIZATION is not set
++CONFIG_CRC_ITU_T=m
++CONFIG_CRC32_SARWATE=y
++# CONFIG_XZ_DEC_X86 is not set
++CONFIG_AVERAGE=y

target/linux/ramips/patches-4.4/0004-MIPS-ralink-add-MT7621-pcie-driver.patch

@@ -0,0 +1,857 @@
+From fec11d4e8dc5cc79bcd7c8fd55038ac21ac39965 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 16 Mar 2014 05:22:39 +0000
+Subject: [PATCH 04/53] MIPS: ralink: add MT7621 pcie driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/pci/Makefile     |    1 +
+ arch/mips/pci/pci-mt7621.c |  813 ++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 814 insertions(+)
+ create mode 100644 arch/mips/pci/pci-mt7621.c
+
+--- a/arch/mips/pci/Makefile
++++ b/arch/mips/pci/Makefile
+@@ -43,6 +43,7 @@ obj-$(CONFIG_SIBYTE_BCM1x80)	+= pci-bcm1
+ obj-$(CONFIG_SNI_RM)		+= fixup-sni.o ops-sni.o
+ obj-$(CONFIG_LANTIQ)		+= fixup-lantiq.o
+ obj-$(CONFIG_PCI_LANTIQ)	+= pci-lantiq.o ops-lantiq.o
++obj-$(CONFIG_SOC_MT7621)	+= pci-mt7621.o
+ obj-$(CONFIG_SOC_RT288X)	+= pci-rt2880.o
+ obj-$(CONFIG_SOC_RT3883)	+= pci-rt3883.o
+ obj-$(CONFIG_TANBAC_TB0219)	+= fixup-tb0219.o
+--- /dev/null
++++ b/arch/mips/pci/pci-mt7621.c
+@@ -0,0 +1,832 @@
++/**************************************************************************
++ *
++ *  BRIEF MODULE DESCRIPTION
++ *     PCI init for Ralink RT2880 solution
++ *
++ *  Copyright 2007 Ralink Inc. ([email protected])
++ *
++ *  This program is free software; you can redistribute  it and/or modify it
++ *  under  the terms of  the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the  License, or (at your
++ *  option) any later version.
++ *
++ *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
++ *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
++ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
++ *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
++ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
++ *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
++ *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
++ *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
++ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
++ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
++ *
++ *  You should have received a copy of the  GNU General Public License along
++ *  with this program; if not, write  to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ *
++ **************************************************************************
++ * May 2007 Bruce Chang
++ * Initial Release
++ *
++ * May 2009 Bruce Chang
++ * support RT2880/RT3883 PCIe
++ *
++ * May 2011 Bruce Chang
++ * support RT6855/MT7620 PCIe
++ *
++ **************************************************************************
++ */
++
++#include <linux/types.h>
++#include <linux/pci.h>
++#include <linux/kernel.h>
++#include <linux/slab.h>
++#include <linux/version.h>
++#include <asm/pci.h>
++#include <asm/io.h>
++#include <asm/mips-cm.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/of.h>
++#include <linux/of_pci.h>
++#include <linux/platform_device.h>
++
++#include <ralink_regs.h>
++
++extern void pcie_phy_init(void);
++extern void chk_phy_pll(void);
++
++/*
++ * These functions and structures provide the BIOS scan and mapping of the PCI
++ * devices.
++ */
++
++#define CONFIG_PCIE_PORT0
++#define CONFIG_PCIE_PORT1
++#define CONFIG_PCIE_PORT2
++#define RALINK_PCIE0_CLK_EN             (1<<24)
++#define RALINK_PCIE1_CLK_EN             (1<<25)
++#define RALINK_PCIE2_CLK_EN             (1<<26)
++
++#define RALINK_PCI_CONFIG_ADDR                         0x20
++#define RALINK_PCI_CONFIG_DATA_VIRTUAL_REG     0x24
++#define SURFBOARDINT_PCIE0       11      /* PCIE0 */
++#define RALINK_INT_PCIE0         SURFBOARDINT_PCIE0
++#define RALINK_INT_PCIE1         SURFBOARDINT_PCIE1
++#define RALINK_INT_PCIE2         SURFBOARDINT_PCIE2
++#define SURFBOARDINT_PCIE1       31     /* PCIE1 */
++#define SURFBOARDINT_PCIE2       32     /* PCIE2 */
++#define RALINK_PCI_MEMBASE              *(volatile u32 *)(RALINK_PCI_BASE + 0x0028)
++#define RALINK_PCI_IOBASE               *(volatile u32 *)(RALINK_PCI_BASE + 0x002C)
++#define RALINK_PCIE0_RST                (1<<24)
++#define RALINK_PCIE1_RST                (1<<25)
++#define RALINK_PCIE2_RST                (1<<26)
++#define RALINK_SYSCTL_BASE              0xBE000000
++
++#define RALINK_PCI_PCICFG_ADDR          *(volatile u32 *)(RALINK_PCI_BASE + 0x0000)
++#define RALINK_PCI_PCIMSK_ADDR          *(volatile u32 *)(RALINK_PCI_BASE + 0x000C)
++#define RALINK_PCI_BASE                 0xBE140000
++
++#define RALINK_PCIEPHY_P0P1_CTL_OFFSET (RALINK_PCI_BASE + 0x9000)
++#define RT6855_PCIE0_OFFSET     0x2000
++#define RT6855_PCIE1_OFFSET     0x3000
++#define RT6855_PCIE2_OFFSET     0x4000
++
++#define RALINK_PCI0_BAR0SETUP_ADDR      *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0010)
++#define RALINK_PCI0_IMBASEBAR0_ADDR     *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0018)
++#define RALINK_PCI0_ID                  *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0030)
++#define RALINK_PCI0_CLASS               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0034)
++#define RALINK_PCI0_SUBID               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0038)
++#define RALINK_PCI0_STATUS              *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0050)
++#define RALINK_PCI0_DERR                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0060)
++#define RALINK_PCI0_ECRC                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE0_OFFSET + 0x0064)
++
++#define RALINK_PCI1_BAR0SETUP_ADDR      *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0010)
++#define RALINK_PCI1_IMBASEBAR0_ADDR     *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0018)
++#define RALINK_PCI1_ID                  *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0030)
++#define RALINK_PCI1_CLASS               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0034)
++#define RALINK_PCI1_SUBID               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0038)
++#define RALINK_PCI1_STATUS              *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0050)
++#define RALINK_PCI1_DERR                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0060)
++#define RALINK_PCI1_ECRC                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE1_OFFSET + 0x0064)
++
++#define RALINK_PCI2_BAR0SETUP_ADDR      *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0010)
++#define RALINK_PCI2_IMBASEBAR0_ADDR     *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0018)
++#define RALINK_PCI2_ID                  *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0030)
++#define RALINK_PCI2_CLASS               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0034)
++#define RALINK_PCI2_SUBID               *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0038)
++#define RALINK_PCI2_STATUS              *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0050)
++#define RALINK_PCI2_DERR                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0060)
++#define RALINK_PCI2_ECRC                *(volatile u32 *)(RALINK_PCI_BASE + RT6855_PCIE2_OFFSET + 0x0064)
++
++#define RALINK_PCIEPHY_P0P1_CTL_OFFSET  (RALINK_PCI_BASE + 0x9000)
++#define RALINK_PCIEPHY_P2_CTL_OFFSET    (RALINK_PCI_BASE + 0xA000)
++
++
++#define MV_WRITE(ofs, data)  \
++        *(volatile u32 *)(RALINK_PCI_BASE+(ofs)) = cpu_to_le32(data)
++#define MV_READ(ofs, data)   \
++	        *(data) = le32_to_cpu(*(volatile u32 *)(RALINK_PCI_BASE+(ofs)))
++#define MV_READ_DATA(ofs)    \
++		        le32_to_cpu(*(volatile u32 *)(RALINK_PCI_BASE+(ofs)))
++
++#define MV_WRITE_16(ofs, data)  \
++        *(volatile u16 *)(RALINK_PCI_BASE+(ofs)) = cpu_to_le16(data)
++#define MV_READ_16(ofs, data)   \
++	        *(data) = le16_to_cpu(*(volatile u16 *)(RALINK_PCI_BASE+(ofs)))
++
++#define MV_WRITE_8(ofs, data)  \
++        *(volatile u8 *)(RALINK_PCI_BASE+(ofs)) = data
++#define MV_READ_8(ofs, data)   \
++	        *(data) = *(volatile u8 *)(RALINK_PCI_BASE+(ofs))
++
++
++
++#define RALINK_PCI_MM_MAP_BASE	0x60000000
++#define RALINK_PCI_IO_MAP_BASE	0x1e160000
++
++#define RALINK_SYSTEM_CONTROL_BASE	0xbe000000
++#define GPIO_PERST
++#define ASSERT_SYSRST_PCIE(val)		do {	\
++						if (*(unsigned int *)(0xbe00000c) == 0x00030101)	\
++							RALINK_RSTCTRL |= val;	\
++						else	\
++							RALINK_RSTCTRL &= ~val;	\
++					} while(0)
++#define DEASSERT_SYSRST_PCIE(val) 	do {	\
++						if (*(unsigned int *)(0xbe00000c) == 0x00030101)	\
++							RALINK_RSTCTRL &= ~val;	\
++						else	\
++							RALINK_RSTCTRL |= val;	\
++					} while(0)
++#define RALINK_SYSCFG1			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x14)
++#define RALINK_CLKCFG1			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x30)
++#define RALINK_RSTCTRL			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x34)
++#define RALINK_GPIOMODE			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x60)
++#define RALINK_PCIE_CLK_GEN		*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x7c)
++#define RALINK_PCIE_CLK_GEN1		*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x80)
++#define PPLL_CFG1			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0x9c)
++#define PPLL_DRV			*(unsigned int *)(RALINK_SYSTEM_CONTROL_BASE + 0xa0)
++//RALINK_SYSCFG1 bit
++#define RALINK_PCI_HOST_MODE_EN		(1<<7)
++#define RALINK_PCIE_RC_MODE_EN		(1<<8)
++//RALINK_RSTCTRL bit
++#define RALINK_PCIE_RST			(1<<23)
++#define RALINK_PCI_RST			(1<<24)
++//RALINK_CLKCFG1 bit
++#define RALINK_PCI_CLK_EN		(1<<19)
++#define RALINK_PCIE_CLK_EN		(1<<21)
++//RALINK_GPIOMODE bit
++#define PCI_SLOTx2			(1<<11)
++#define PCI_SLOTx1			(2<<11)
++//MTK PCIE PLL bit
++#define PDRV_SW_SET			(1<<31)
++#define LC_CKDRVPD_			(1<<19)
++
++#define MEMORY_BASE 0x0
++static int pcie_link_status = 0;
++
++#define PCI_ACCESS_READ_1  0
++#define PCI_ACCESS_READ_2  1
++#define PCI_ACCESS_READ_4  2
++#define PCI_ACCESS_WRITE_1 3
++#define PCI_ACCESS_WRITE_2 4
++#define PCI_ACCESS_WRITE_4 5
++
++static int config_access(unsigned char access_type, struct pci_bus *bus,
++			unsigned int devfn, unsigned int where, u32 * data)
++{
++	unsigned int slot = PCI_SLOT(devfn);
++	u8 func = PCI_FUNC(devfn);
++	uint32_t address_reg, data_reg;
++	unsigned int address;
++
++	address_reg = RALINK_PCI_CONFIG_ADDR;
++	data_reg = RALINK_PCI_CONFIG_DATA_VIRTUAL_REG;
++
++	address = (((where&0xF00)>>8)<<24) |(bus->number << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
++	MV_WRITE(address_reg, address);
++
++	switch(access_type) {
++	case PCI_ACCESS_WRITE_1:
++		MV_WRITE_8(data_reg+(where&0x3), *data);
++		break;
++	case PCI_ACCESS_WRITE_2:
++		MV_WRITE_16(data_reg+(where&0x3), *data);
++		break;
++	case PCI_ACCESS_WRITE_4:
++		MV_WRITE(data_reg, *data);
++		break;
++	case PCI_ACCESS_READ_1:
++		MV_READ_8( data_reg+(where&0x3), data);
++		break;
++	case PCI_ACCESS_READ_2:
++		MV_READ_16(data_reg+(where&0x3), data);
++		break;
++	case PCI_ACCESS_READ_4:
++		MV_READ(data_reg, data);
++		break;
++	default:
++		printk("no specify access type\n");
++		break;
++	}
++	return 0;
++}
++
++static int
++read_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 * val)
++{
++	return config_access(PCI_ACCESS_READ_1, bus, devfn, (unsigned int)where, (u32 *)val);
++}
++
++static int
++read_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 * val)
++{
++	return config_access(PCI_ACCESS_READ_2, bus, devfn, (unsigned int)where, (u32 *)val);
++}
++
++static int
++read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 * val)
++{
++	return config_access(PCI_ACCESS_READ_4, bus, devfn, (unsigned int)where, (u32 *)val);
++}
++
++static int
++write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 val)
++{
++	if (config_access(PCI_ACCESS_WRITE_1, bus, devfn, (unsigned int)where, (u32 *)&val))
++		return -1;
++
++	return PCIBIOS_SUCCESSFUL;
++}
++
++static int
++write_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 val)
++{
++	if (config_access(PCI_ACCESS_WRITE_2, bus, devfn, where, (u32 *)&val))
++		return -1;
++
++	return PCIBIOS_SUCCESSFUL;
++}
++
++static int
++write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 val)
++{
++	if (config_access(PCI_ACCESS_WRITE_4, bus, devfn, where, &val))
++		return -1;
++
++	return PCIBIOS_SUCCESSFUL;
++}
++
++
++static int
++pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val)
++{
++	switch (size) {
++	case 1:
++		return read_config_byte(bus, devfn, where, (u8 *) val);
++	case 2:
++		return read_config_word(bus, devfn, where, (u16 *) val);
++	default:
++		return read_config_dword(bus, devfn, where, val);
++	}
++}
++
++static int
++pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
++{
++	switch (size) {
++	case 1:
++		return write_config_byte(bus, devfn, where, (u8) val);
++	case 2:
++		return write_config_word(bus, devfn, where, (u16) val);
++	default:
++		return write_config_dword(bus, devfn, where, val);
++	}
++}
++
++struct pci_ops mt7621_pci_ops= {
++	.read		=  pci_config_read,
++	.write		= pci_config_write,
++};
++
++static struct resource mt7621_res_pci_mem1 = {
++	.name		= "PCI MEM1",
++	.start		= RALINK_PCI_MM_MAP_BASE,
++	.end		= (u32)((RALINK_PCI_MM_MAP_BASE + (unsigned char *)0x0fffffff)),
++	.flags		= IORESOURCE_MEM,
++};
++static struct resource mt7621_res_pci_io1 = {
++	.name		= "PCI I/O1",
++	.start		= RALINK_PCI_IO_MAP_BASE,
++	.end		= (u32)((RALINK_PCI_IO_MAP_BASE + (unsigned char *)0x0ffff)),
++	.flags		= IORESOURCE_IO,
++};
++
++static struct pci_controller mt7621_controller = {
++	.pci_ops	= &mt7621_pci_ops,
++	.mem_resource	= &mt7621_res_pci_mem1,
++	.io_resource	= &mt7621_res_pci_io1,
++	.mem_offset	= 0x00000000UL,
++	.io_offset	= 0x00000000UL,
++	.io_map_base	= 0xa0000000,
++};
++
++static void
++read_config(unsigned long bus, unsigned long dev, unsigned long func, unsigned long reg, unsigned long *val)
++{
++	unsigned int address_reg, data_reg, address;
++
++	address_reg = RALINK_PCI_CONFIG_ADDR;
++        data_reg = RALINK_PCI_CONFIG_DATA_VIRTUAL_REG;
++	address = (((reg & 0xF00)>>8)<<24) | (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000 ;
++        MV_WRITE(address_reg, address);
++        MV_READ(data_reg, val);
++	return;
++}
++
++static void
++write_config(unsigned long bus, unsigned long dev, unsigned long func, unsigned long reg, unsigned long val)
++{
++	unsigned int address_reg, data_reg, address;
++
++	address_reg = RALINK_PCI_CONFIG_ADDR;
++	data_reg = RALINK_PCI_CONFIG_DATA_VIRTUAL_REG;
++	address = (((reg & 0xF00)>>8)<<24) | (bus << 16) | (dev << 11) | (func << 8) | (reg & 0xfc) | 0x80000000 ;
++	MV_WRITE(address_reg, address);
++	MV_WRITE(data_reg, val);
++	return;
++}
++
++
++int __init
++pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
++{
++	u16 cmd;
++	u32 val;
++	int irq = 0;
++
++	if ((dev->bus->number == 0) && (slot == 0)) {
++		write_config(0, 0, 0, PCI_BASE_ADDRESS_0, MEMORY_BASE);
++		read_config(0, 0, 0, PCI_BASE_ADDRESS_0, (unsigned long *)&val);
++		printk("BAR0 at slot 0 = %x\n", val);
++		printk("bus=0x%x, slot = 0x%x\n",dev->bus->number, slot);
++	} else if((dev->bus->number == 0) && (slot == 0x1)) {
++		write_config(0, 1, 0, PCI_BASE_ADDRESS_0, MEMORY_BASE);
++		read_config(0, 1, 0, PCI_BASE_ADDRESS_0, (unsigned long *)&val);
++		printk("BAR0 at slot 1 = %x\n", val);
++		printk("bus=0x%x, slot = 0x%x\n",dev->bus->number, slot);
++	} else if((dev->bus->number == 0) && (slot == 0x2)) {
++		write_config(0, 2, 0, PCI_BASE_ADDRESS_0, MEMORY_BASE);
++		read_config(0, 2, 0, PCI_BASE_ADDRESS_0, (unsigned long *)&val);
++		printk("BAR0 at slot 2 = %x\n", val);
++		printk("bus=0x%x, slot = 0x%x\n",dev->bus->number, slot);
++	} else if ((dev->bus->number == 1) && (slot == 0x0)) {
++		switch (pcie_link_status) {
++		case 2:
++		case 6:
++			irq = RALINK_INT_PCIE1;
++			break;
++		case 4:
++			irq = RALINK_INT_PCIE2;
++			break;
++		default:
++			irq = RALINK_INT_PCIE0;
++		}
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else if ((dev->bus->number == 2) && (slot == 0x0)) {
++		switch (pcie_link_status) {
++		case 5:
++		case 6:
++			irq = RALINK_INT_PCIE2;
++			break;
++		default:
++			irq = RALINK_INT_PCIE1;
++		}
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else if ((dev->bus->number == 2) && (slot == 0x1)) {
++		switch (pcie_link_status) {
++		case 5:
++		case 6:
++			irq = RALINK_INT_PCIE2;
++			break;
++		default:
++			irq = RALINK_INT_PCIE1;
++		}
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else if ((dev->bus->number ==3) && (slot == 0x0)) {
++		irq = RALINK_INT_PCIE2;
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else if ((dev->bus->number ==3) && (slot == 0x1)) {
++		irq = RALINK_INT_PCIE2;
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else if ((dev->bus->number ==3) && (slot == 0x2)) {
++		irq = RALINK_INT_PCIE2;
++		printk("bus=0x%x, slot = 0x%x, irq=0x%x\n",dev->bus->number, slot, dev->irq);
++	} else {
++		printk("bus=0x%x, slot = 0x%x\n",dev->bus->number, slot);
++		return 0;
++	}
++
++	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 0x14);  //configure cache line size 0x14
++	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xFF);  //configure latency timer 0x10
++	pci_read_config_word(dev, PCI_COMMAND, &cmd);
++	cmd = cmd | PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
++	pci_write_config_word(dev, PCI_COMMAND, cmd);
++	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
++	return irq;
++}
++
++void
++set_pcie_phy(u32 *addr, int start_b, int bits, int val)
++{
++//	printk("0x%p:", addr);
++//	printk(" %x", *addr);
++	*(unsigned int *)(addr) &= ~(((1<<bits) - 1)<<start_b);
++	*(unsigned int *)(addr) |= val << start_b;
++//	printk(" -> %x\n", *addr);
++}
++
++void
++bypass_pipe_rst(void)
++{
++#if defined (CONFIG_PCIE_PORT0)
++	/* PCIe Port 0 */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x02c), 12, 1, 0x01);	// rg_pe1_pipe_rst_b
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x02c),  4, 1, 0x01);	// rg_pe1_pipe_cmd_frc[4]
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	/* PCIe Port 1 */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x12c), 12, 1, 0x01);	// rg_pe1_pipe_rst_b
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x12c),  4, 1, 0x01);	// rg_pe1_pipe_cmd_frc[4]
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	/* PCIe Port 2 */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x02c), 12, 1, 0x01);	// rg_pe1_pipe_rst_b
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x02c),  4, 1, 0x01);	// rg_pe1_pipe_cmd_frc[4]
++#endif
++}
++
++void
++set_phy_for_ssc(void)
++{
++	unsigned long reg = (*(volatile u32 *)(RALINK_SYSCTL_BASE + 0x10));
++
++	reg = (reg >> 6) & 0x7;
++#if defined (CONFIG_PCIE_PORT0) || defined (CONFIG_PCIE_PORT1)
++	/* Set PCIe Port0 & Port1 PHY to disable SSC */
++	/* Debug Xtal Type */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x400),  8, 1, 0x01);	// rg_pe1_frc_h_xtal_type
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x400),  9, 2, 0x00);	// rg_pe1_h_xtal_type
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x000),  4, 1, 0x01);	// rg_pe1_frc_phy_en               //Force Port 0 enable control
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x100),  4, 1, 0x01);	// rg_pe1_frc_phy_en               //Force Port 1 enable control
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x000),  5, 1, 0x00);	// rg_pe1_phy_en                   //Port 0 disable
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x100),  5, 1, 0x00);	// rg_pe1_phy_en                   //Port 1 disable
++	if(reg <= 5 && reg >= 3) { 	// 40MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490),  6, 2, 0x01);	// RG_PE1_H_PLL_PREDIV             //Pre-divider ratio (for host mode)
++		printk("***** Xtal 40MHz *****\n");
++	} else {			// 25MHz | 20MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490),  6, 2, 0x00);	// RG_PE1_H_PLL_PREDIV             //Pre-divider ratio (for host mode)
++		if (reg >= 6) { 	
++			printk("***** Xtal 25MHz *****\n");
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4bc),  4, 2, 0x01);	// RG_PE1_H_PLL_FBKSEL             //Feedback clock select
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x49c),  0,31, 0x18000000);	// RG_PE1_H_LCDDS_PCW_NCPO         //DDS NCPO PCW (for host mode)
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4a4),  0,16, 0x18d);	// RG_PE1_H_LCDDS_SSC_PRD          //DDS SSC dither period control
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4a8),  0,12, 0x4a);	// RG_PE1_H_LCDDS_SSC_DELTA        //DDS SSC dither amplitude control
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4a8), 16,12, 0x4a);	// RG_PE1_H_LCDDS_SSC_DELTA1       //DDS SSC dither amplitude control for initial
++		} else {
++			printk("***** Xtal 20MHz *****\n");
++		}
++	}
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4a0),  5, 1, 0x01);	// RG_PE1_LCDDS_CLK_PH_INV         //DDS clock inversion
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490), 22, 2, 0x02);	// RG_PE1_H_PLL_BC                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490), 18, 4, 0x06);	// RG_PE1_H_PLL_BP                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490), 12, 4, 0x02);	// RG_PE1_H_PLL_IR                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490),  8, 4, 0x01);	// RG_PE1_H_PLL_IC                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x4ac), 16, 3, 0x00);	// RG_PE1_H_PLL_BR                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x490),  1, 3, 0x02);	// RG_PE1_PLL_DIVEN                
++	if(reg <= 5 && reg >= 3) { 	// 40MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x414),  6, 2, 0x01);	// rg_pe1_mstckdiv		//value of da_pe1_mstckdiv when force mode enable
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x414),  5, 1, 0x01);	// rg_pe1_frc_mstckdiv          //force mode enable of da_pe1_mstckdiv      
++	}
++	/* Enable PHY and disable force mode */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x000),  5, 1, 0x01);	// rg_pe1_phy_en                   //Port 0 enable
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x100),  5, 1, 0x01);	// rg_pe1_phy_en                   //Port 1 enable
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x000),  4, 1, 0x00);	// rg_pe1_frc_phy_en               //Force Port 0 disable control
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P0P1_CTL_OFFSET + 0x100),  4, 1, 0x00);	// rg_pe1_frc_phy_en               //Force Port 1 disable control
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	/* Set PCIe Port2 PHY to disable SSC */
++	/* Debug Xtal Type */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x400),  8, 1, 0x01);	// rg_pe1_frc_h_xtal_type
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x400),  9, 2, 0x00);	// rg_pe1_h_xtal_type
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x000),  4, 1, 0x01);	// rg_pe1_frc_phy_en               //Force Port 0 enable control
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x000),  5, 1, 0x00);	// rg_pe1_phy_en                   //Port 0 disable
++	if(reg <= 5 && reg >= 3) { 	// 40MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490),  6, 2, 0x01);	// RG_PE1_H_PLL_PREDIV             //Pre-divider ratio (for host mode)
++	} else {			// 25MHz | 20MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490),  6, 2, 0x00);	// RG_PE1_H_PLL_PREDIV             //Pre-divider ratio (for host mode)
++		if (reg >= 6) { 	// 25MHz Xtal
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4bc),  4, 2, 0x01);	// RG_PE1_H_PLL_FBKSEL             //Feedback clock select
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x49c),  0,31, 0x18000000);	// RG_PE1_H_LCDDS_PCW_NCPO         //DDS NCPO PCW (for host mode)
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4a4),  0,16, 0x18d);	// RG_PE1_H_LCDDS_SSC_PRD          //DDS SSC dither period control
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4a8),  0,12, 0x4a);	// RG_PE1_H_LCDDS_SSC_DELTA        //DDS SSC dither amplitude control
++			set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4a8), 16,12, 0x4a);	// RG_PE1_H_LCDDS_SSC_DELTA1       //DDS SSC dither amplitude control for initial
++		}
++	}
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4a0),  5, 1, 0x01);	// RG_PE1_LCDDS_CLK_PH_INV         //DDS clock inversion
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490), 22, 2, 0x02);	// RG_PE1_H_PLL_BC                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490), 18, 4, 0x06);	// RG_PE1_H_PLL_BP                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490), 12, 4, 0x02);	// RG_PE1_H_PLL_IR                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490),  8, 4, 0x01);	// RG_PE1_H_PLL_IC                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x4ac), 16, 3, 0x00);	// RG_PE1_H_PLL_BR                 
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x490),  1, 3, 0x02);	// RG_PE1_PLL_DIVEN                
++	if(reg <= 5 && reg >= 3) { 	// 40MHz Xtal
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x414),  6, 2, 0x01);	// rg_pe1_mstckdiv		//value of da_pe1_mstckdiv when force mode enable
++		set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x414),  5, 1, 0x01);	// rg_pe1_frc_mstckdiv          //force mode enable of da_pe1_mstckdiv      
++	}
++	/* Enable PHY and disable force mode */
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x000),  5, 1, 0x01);	// rg_pe1_phy_en                   //Port 0 enable
++	set_pcie_phy((u32 *)(RALINK_PCIEPHY_P2_CTL_OFFSET + 0x000),  4, 1, 0x00);	// rg_pe1_frc_phy_en               //Force Port 0 disable control
++#endif
++}
++
++void setup_cm_memory_region(struct resource *mem_resource)
++{
++	resource_size_t mask;
++	if (mips_cm_numiocu()) {
++		/* FIXME: hardware doesn't accept mask values with 1s after
++		   0s (e.g. 0xffef), so it would be great to warn if that's
++		   about to happen */
++		mask = ~(mem_resource->end - mem_resource->start);
++
++		write_gcr_reg1_base(mem_resource->start);
++		write_gcr_reg1_mask(mask | CM_GCR_REGn_MASK_CMTGT_IOCU0);
++		printk("PCI coherence region base: 0x%08lx, mask/settings: 0x%08lx\n",
++		       read_gcr_reg1_base(),
++		       read_gcr_reg1_mask());
++	}
++}
++
++static int mt7621_pci_probe(struct platform_device *pdev)
++{
++	unsigned long val = 0;
++
++	iomem_resource.start = 0;
++	iomem_resource.end= ~0;
++	ioport_resource.start= 0;
++	ioport_resource.end = ~0;
++
++#if defined (CONFIG_PCIE_PORT0)
++	val = RALINK_PCIE0_RST;
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	val |= RALINK_PCIE1_RST;
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	val |= RALINK_PCIE2_RST;
++#endif
++	ASSERT_SYSRST_PCIE(RALINK_PCIE0_RST | RALINK_PCIE1_RST | RALINK_PCIE2_RST);
++	printk("pull PCIe RST: RALINK_RSTCTRL = %x\n", RALINK_RSTCTRL);
++#if defined GPIO_PERST /* add GPIO control instead of PERST_N */ /*chhung*/
++	*(unsigned int *)(0xbe000060) &= ~(0x3<<10 | 0x3<<3);
++	*(unsigned int *)(0xbe000060) |= 0x1<<10 | 0x1<<3;
++	mdelay(100);
++	*(unsigned int *)(0xbe000600) |= 0x1<<19 | 0x1<<8 | 0x1<<7; // use GPIO19/GPIO8/GPIO7 (PERST_N/UART_RXD3/UART_TXD3)
++	mdelay(100);
++	*(unsigned int *)(0xbe000620) &= ~(0x1<<19 | 0x1<<8 | 0x1<<7);		// clear DATA
++
++	mdelay(100);
++#else
++	*(unsigned int *)(0xbe000060) &= ~0x00000c00;
++#endif
++#if defined (CONFIG_PCIE_PORT0)
++	val = RALINK_PCIE0_RST;
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	val |= RALINK_PCIE1_RST;
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	val |= RALINK_PCIE2_RST;
++#endif
++	DEASSERT_SYSRST_PCIE(val);
++	printk("release PCIe RST: RALINK_RSTCTRL = %x\n", RALINK_RSTCTRL);
++
++	if ((*(unsigned int *)(0xbe00000c)&0xFFFF) == 0x0101) // MT7621 E2
++		bypass_pipe_rst();
++	set_phy_for_ssc();
++	printk("release PCIe RST: RALINK_RSTCTRL = %x\n", RALINK_RSTCTRL);
++
++#if defined (CONFIG_PCIE_PORT0)
++	read_config(0, 0, 0, 0x70c, &val);
++	printk("Port 0 N_FTS = %x\n", (unsigned int)val);
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	read_config(0, 1, 0, 0x70c, &val);
++	printk("Port 1 N_FTS = %x\n", (unsigned int)val);
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	read_config(0, 2, 0, 0x70c, &val);
++	printk("Port 2 N_FTS = %x\n", (unsigned int)val);
++#endif
++
++	RALINK_RSTCTRL = (RALINK_RSTCTRL | RALINK_PCIE_RST);
++	RALINK_SYSCFG1 &= ~(0x30);
++	RALINK_SYSCFG1 |= (2<<4);
++	RALINK_PCIE_CLK_GEN &= 0x7fffffff;
++	RALINK_PCIE_CLK_GEN1 &= 0x80ffffff;
++	RALINK_PCIE_CLK_GEN1 |= 0xa << 24;
++	RALINK_PCIE_CLK_GEN |= 0x80000000;
++	mdelay(50);
++	RALINK_RSTCTRL = (RALINK_RSTCTRL & ~RALINK_PCIE_RST);
++	
++
++#if defined GPIO_PERST /* add GPIO control instead of PERST_N */  /*chhung*/
++	*(unsigned int *)(0xbe000620) |= 0x1<<19 | 0x1<<8 | 0x1<<7;		// set DATA
++	mdelay(100);
++#else
++	RALINK_PCI_PCICFG_ADDR &= ~(1<<1); //de-assert PERST
++#endif
++	mdelay(500);
++
++
++	mdelay(500);
++#if defined (CONFIG_PCIE_PORT0)
++	if(( RALINK_PCI0_STATUS & 0x1) == 0)
++	{
++		printk("PCIE0 no card, disable it(RST&CLK)\n");
++		ASSERT_SYSRST_PCIE(RALINK_PCIE0_RST);
++		RALINK_CLKCFG1 = (RALINK_CLKCFG1 & ~RALINK_PCIE0_CLK_EN);
++		pcie_link_status &= ~(1<<0);
++	} else {
++		pcie_link_status |= 1<<0;
++		RALINK_PCI_PCIMSK_ADDR |= (1<<20); // enable pcie1 interrupt
++	}
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	if(( RALINK_PCI1_STATUS & 0x1) == 0)
++	{
++		printk("PCIE1 no card, disable it(RST&CLK)\n");
++		ASSERT_SYSRST_PCIE(RALINK_PCIE1_RST);
++		RALINK_CLKCFG1 = (RALINK_CLKCFG1 & ~RALINK_PCIE1_CLK_EN);
++		pcie_link_status &= ~(1<<1);
++	} else {
++		pcie_link_status |= 1<<1;
++		RALINK_PCI_PCIMSK_ADDR |= (1<<21); // enable pcie1 interrupt
++	}
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	if (( RALINK_PCI2_STATUS & 0x1) == 0) {
++		printk("PCIE2 no card, disable it(RST&CLK)\n");
++		ASSERT_SYSRST_PCIE(RALINK_PCIE2_RST);
++		RALINK_CLKCFG1 = (RALINK_CLKCFG1 & ~RALINK_PCIE2_CLK_EN);
++		pcie_link_status &= ~(1<<2);
++	} else {
++		pcie_link_status |= 1<<2;
++		RALINK_PCI_PCIMSK_ADDR |= (1<<22); // enable pcie2 interrupt
++	}
++#endif
++	if (pcie_link_status == 0)
++		return 0;
++
++/*
++pcie(2/1/0) link status	pcie2_num	pcie1_num	pcie0_num
++3'b000			x		x		x
++3'b001			x		x		0
++3'b010			x		0		x
++3'b011			x		1		0
++3'b100			0		x		x
++3'b101			1		x		0
++3'b110			1		0		x
++3'b111			2		1		0
++*/
++	switch(pcie_link_status) {
++	case 2:
++		RALINK_PCI_PCICFG_ADDR &= ~0x00ff0000;
++		RALINK_PCI_PCICFG_ADDR |= 0x1 << 16;	//port0
++		RALINK_PCI_PCICFG_ADDR |= 0x0 << 20;	//port1
++		break;
++	case 4:
++		RALINK_PCI_PCICFG_ADDR &= ~0x0fff0000;
++		RALINK_PCI_PCICFG_ADDR |= 0x1 << 16;	//port0
++		RALINK_PCI_PCICFG_ADDR |= 0x2 << 20;	//port1
++		RALINK_PCI_PCICFG_ADDR |= 0x0 << 24;	//port2
++		break;
++	case 5:
++		RALINK_PCI_PCICFG_ADDR &= ~0x0fff0000;
++		RALINK_PCI_PCICFG_ADDR |= 0x0 << 16;	//port0
++		RALINK_PCI_PCICFG_ADDR |= 0x2 << 20;	//port1
++		RALINK_PCI_PCICFG_ADDR |= 0x1 << 24;	//port2
++		break;
++	case 6:
++		RALINK_PCI_PCICFG_ADDR &= ~0x0fff0000;
++		RALINK_PCI_PCICFG_ADDR |= 0x2 << 16;	//port0
++		RALINK_PCI_PCICFG_ADDR |= 0x0 << 20;	//port1
++		RALINK_PCI_PCICFG_ADDR |= 0x1 << 24;	//port2
++		break;
++	}
++	printk(" -> %x\n", RALINK_PCI_PCICFG_ADDR);
++	//printk(" RALINK_PCI_ARBCTL = %x\n", RALINK_PCI_ARBCTL);
++
++/*
++	ioport_resource.start = mt7621_res_pci_io1.start;
++  	ioport_resource.end = mt7621_res_pci_io1.end;
++*/
++
++	RALINK_PCI_MEMBASE = 0xffffffff; //RALINK_PCI_MM_MAP_BASE;
++	RALINK_PCI_IOBASE = RALINK_PCI_IO_MAP_BASE;
++
++#if defined (CONFIG_PCIE_PORT0)
++	//PCIe0
++	if((pcie_link_status & 0x1) != 0) {
++		RALINK_PCI0_BAR0SETUP_ADDR = 0x7FFF0001;	//open 7FFF:2G; ENABLE
++		RALINK_PCI0_IMBASEBAR0_ADDR = MEMORY_BASE;
++		RALINK_PCI0_CLASS = 0x06040001;
++		printk("PCIE0 enabled\n");
++	}
++#endif
++#if defined (CONFIG_PCIE_PORT1)
++	//PCIe1
++	if ((pcie_link_status & 0x2) != 0) {
++		RALINK_PCI1_BAR0SETUP_ADDR = 0x7FFF0001;	//open 7FFF:2G; ENABLE
++		RALINK_PCI1_IMBASEBAR0_ADDR = MEMORY_BASE;
++		RALINK_PCI1_CLASS = 0x06040001;
++		printk("PCIE1 enabled\n");
++	}
++#endif
++#if defined (CONFIG_PCIE_PORT2)
++	//PCIe2
++	if ((pcie_link_status & 0x4) != 0) {
++		RALINK_PCI2_BAR0SETUP_ADDR = 0x7FFF0001;	//open 7FFF:2G; ENABLE
++		RALINK_PCI2_IMBASEBAR0_ADDR = MEMORY_BASE;
++		RALINK_PCI2_CLASS = 0x06040001;
++		printk("PCIE2 enabled\n");
++	}
++#endif
++
++
++	switch(pcie_link_status) {
++	case 7:
++		read_config(0, 2, 0, 0x4, &val);
++		write_config(0, 2, 0, 0x4, val|0x4);
++		// write_config(0, 1, 0, 0x4, val|0x7);
++		read_config(0, 2, 0, 0x70c, &val);
++		val &= ~(0xff)<<8;
++		val |= 0x50<<8;
++		write_config(0, 2, 0, 0x70c, val);
++	case 3:
++	case 5:
++	case 6:
++		read_config(0, 1, 0, 0x4, &val);
++		write_config(0, 1, 0, 0x4, val|0x4);
++		// write_config(0, 1, 0, 0x4, val|0x7);
++		read_config(0, 1, 0, 0x70c, &val);
++		val &= ~(0xff)<<8;
++		val |= 0x50<<8;
++		write_config(0, 1, 0, 0x70c, val);
++	default:
++		read_config(0, 0, 0, 0x4, &val);
++		write_config(0, 0, 0, 0x4, val|0x4); //bus master enable
++		// write_config(0, 0, 0, 0x4, val|0x7); //bus master enable
++		read_config(0, 0, 0, 0x70c, &val);
++		val &= ~(0xff)<<8;
++		val |= 0x50<<8;
++		write_config(0, 0, 0, 0x70c, val);
++	}
++
++	pci_load_of_ranges(&mt7621_controller, pdev->dev.of_node);
++	setup_cm_memory_region(mt7621_controller.mem_resource);
++	register_pci_controller(&mt7621_controller);
++	return 0;
++
++}
++
++int pcibios_plat_dev_init(struct pci_dev *dev)
++{
++	return 0;
++}
++
++static const struct of_device_id mt7621_pci_ids[] = {
++	{ .compatible = "mediatek,mt7621-pci" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7621_pci_ids);
++
++static struct platform_driver mt7621_pci_driver = {
++	.probe = mt7621_pci_probe,
++	.driver = {
++		.name = "mt7621-pci",
++		.owner = THIS_MODULE,
++		.of_match_table = of_match_ptr(mt7621_pci_ids),
++	},
++};
++
++static int __init mt7621_pci_init(void)
++{
++	return platform_driver_register(&mt7621_pci_driver);
++}
++
++arch_initcall(mt7621_pci_init);

target/linux/ramips/patches-4.4/0005-MIPS-use-set_mode-to-enable-disable-the-cevt-r4k-irq.patch

@@ -0,0 +1,82 @@
+From ce3d4a4111a5f7e6b4e74bceae5faa6ce388e8ec Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 14 Jul 2013 23:08:11 +0200
+Subject: [PATCH 05/53] MIPS: use set_mode() to enable/disable the cevt-r4k
+ irq
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/Kconfig |    5 +++++
+ 1 file changed, 5 insertions(+)
+
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -1,11 +1,16 @@
+ if RALINK
+ 
++config CEVT_SYSTICK_QUIRK
++	bool
++	default n
++
+ config CLKEVT_RT3352
+ 	bool
+ 	depends on SOC_RT305X || SOC_MT7620
+ 	default y
+ 	select CLKSRC_OF
+ 	select CLKSRC_MMIO
++	select CEVT_SYSTICK_QUIRK
+ 
+ config RALINK_ILL_ACC
+ 	bool
+--- a/arch/mips/kernel/cevt-r4k.c
++++ b/arch/mips/kernel/cevt-r4k.c
+@@ -15,6 +15,26 @@
+ #include <asm/time.h>
+ #include <asm/cevt-r4k.h>
+ 
++static int mips_state_oneshot(struct clock_event_device *evt)
++{
++	if (!cp0_timer_irq_installed) {
++		cp0_timer_irq_installed = 1;
++		setup_irq(evt->irq, &c0_compare_irqaction);
++	}
++
++	return 0;
++}
++
++static int mips_state_shutdown(struct clock_event_device *evt)
++{
++	if (cp0_timer_irq_installed) {
++		cp0_timer_irq_installed = 0;
++		remove_irq(evt->irq, &c0_compare_irqaction);
++	}
++
++	return 0;
++}
++
+ static int mips_next_event(unsigned long delta,
+ 			   struct clock_event_device *evt)
+ {
+@@ -208,18 +228,21 @@ int r4k_clockevent_init(void)
+ 	cd->rating		= 300;
+ 	cd->irq			= irq;
+ 	cd->cpumask		= cpumask_of(cpu);
++	cd->set_state_shutdown	= mips_state_shutdown;
++	cd->set_state_oneshot	= mips_state_oneshot;
+ 	cd->set_next_event	= mips_next_event;
+ 	cd->event_handler	= mips_event_handler;
+ 
+ 	clockevents_register_device(cd);
+ 
++#ifndef CONFIG_CEVT_SYSTICK_QUIRK
+ 	if (cp0_timer_irq_installed)
+ 		return 0;
+ 
+ 	cp0_timer_irq_installed = 1;
+ 
+ 	setup_irq(irq, &c0_compare_irqaction);
+-
++#endif
+ 	return 0;
+ }
+ 

target/linux/ramips/patches-4.4/0006-MIPS-ralink-add-cpu-frequency-scaling.patch

@@ -0,0 +1,93 @@
+From bd30f19a006fb52bac80c6463c49dd2f4159f4ac Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 28 Jul 2013 16:26:41 +0200
+Subject: [PATCH 06/53] MIPS: ralink: add cpu frequency scaling
+
+This feature will break udelay() and cause the delay loop to have longer delays
+when the frequency is scaled causing a performance hit.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/cevt-rt3352.c |   38 ++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 38 insertions(+)
+
+--- a/arch/mips/ralink/cevt-rt3352.c
++++ b/arch/mips/ralink/cevt-rt3352.c
+@@ -29,6 +29,10 @@
+ /* enable the counter */
+ #define CFG_CNT_EN		0x1
+ 
++/* mt7620 frequency scaling defines */
++#define CLK_LUT_CFG	0x40
++#define SLEEP_EN	BIT(31)
++
+ struct systick_device {
+ 	void __iomem *membase;
+ 	struct clock_event_device dev;
+@@ -36,9 +40,26 @@ struct systick_device {
+ 	int freq_scale;
+ };
+ 
++static void (*systick_freq_scaling)(struct systick_device *sdev, int status);
++
+ static int systick_set_oneshot(struct clock_event_device *evt);
+ static int systick_shutdown(struct clock_event_device *evt);
+ 
++static inline void mt7620_freq_scaling(struct systick_device *sdev, int status)
++{
++	if (sdev->freq_scale == status)
++		return;
++
++	sdev->freq_scale = status;
++
++	pr_info("%s: %s autosleep mode\n", systick.dev.name,
++			(status) ? ("enable") : ("disable"));
++	if (status)
++		rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) | SLEEP_EN, CLK_LUT_CFG);
++	else
++		rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) & ~SLEEP_EN, CLK_LUT_CFG);
++}
++
+ static int systick_next_event(unsigned long delta,
+ 				struct clock_event_device *evt)
+ {
+@@ -99,6 +120,9 @@ static int systick_shutdown(struct clock
+ 	sdev->irq_requested = 0;
+ 	iowrite32(0, systick.membase + SYSTICK_CONFIG);
+ 
++	if (systick_freq_scaling)
++		systick_freq_scaling(sdev, 0);
++
+ 	return 0;
+ }
+ 
+@@ -114,15 +138,29 @@ static int systick_set_oneshot(struct cl
+ 	iowrite32(CFG_EXT_STK_EN | CFG_CNT_EN,
+ 		  systick.membase + SYSTICK_CONFIG);
+ 
++	if (systick_freq_scaling)
++		systick_freq_scaling(sdev, 1);
++
+ 	return 0;
+ }
+ 
++static const struct of_device_id systick_match[] = {
++	{ .compatible = "ralink,mt7620-systick", .data = mt7620_freq_scaling},
++	{},
++};
++
+ static void __init ralink_systick_init(struct device_node *np)
+ {
++	const struct of_device_id *match;
++
+ 	systick.membase = of_iomap(np, 0);
+ 	if (!systick.membase)
+ 		return;
+ 
++	match = of_match_node(systick_match, np);
++	if (match)
++		systick_freq_scaling = match->data;
++
+ 	systick_irqaction.name = np->name;
+ 	systick.dev.name = np->name;
+ 	clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60);

target/linux/ramips/patches-4.4/0007-MIPS-ralink-copy-the-commandline-from-the-devicetree.patch

@@ -0,0 +1,21 @@
+From 67b7bff0fd364c194e653f69baa623ba2141bd4c Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 4 Aug 2014 18:46:02 +0200
+Subject: [PATCH 07/53] MIPS: ralink: copy the commandline from the devicetree
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/of.c |    2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -74,6 +74,8 @@ void __init plat_mem_setup(void)
+ 	 */
+ 	__dt_setup_arch(__dtb_start);
+ 
++	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
++
+ 	of_scan_flat_dt(early_init_dt_find_memory, NULL);
+ 	if (memory_dtb)
+ 		of_scan_flat_dt(early_init_dt_scan_memory, NULL);

target/linux/ramips/patches-4.4/0009-PCI-MIPS-adds-mt7620a-pcie-driver.patch

@@ -0,0 +1,433 @@
+From 41aa7fc236fdb1f4c9b8b10df9b71f0d248cb36b Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:11:12 +0100
+Subject: [PATCH 09/53] PCI: MIPS: adds mt7620a pcie driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/include/asm/mach-ralink/mt7620.h |    1 +
+ arch/mips/pci/Makefile                     |    1 +
+ arch/mips/pci/pci-mt7620.c                 |  396 ++++++++++++++++++++++++++++
+ arch/mips/ralink/Kconfig                   |    1 +
+ 4 files changed, 399 insertions(+)
+ create mode 100644 arch/mips/pci/pci-mt7620.c
+
+--- a/arch/mips/pci/Makefile
++++ b/arch/mips/pci/Makefile
+@@ -43,6 +43,7 @@ obj-$(CONFIG_SIBYTE_BCM1x80)	+= pci-bcm1
+ obj-$(CONFIG_SNI_RM)		+= fixup-sni.o ops-sni.o
+ obj-$(CONFIG_LANTIQ)		+= fixup-lantiq.o
+ obj-$(CONFIG_PCI_LANTIQ)	+= pci-lantiq.o ops-lantiq.o
++obj-$(CONFIG_SOC_MT7620)	+= pci-mt7620.o
+ obj-$(CONFIG_SOC_MT7621)	+= pci-mt7621.o
+ obj-$(CONFIG_SOC_RT288X)	+= pci-rt2880.o
+ obj-$(CONFIG_SOC_RT3883)	+= pci-rt3883.o
+--- /dev/null
++++ b/arch/mips/pci/pci-mt7620.c
+@@ -0,0 +1,396 @@
++/*
++ *  Ralink MT7620A SoC PCI support
++ *
++ *  Copyright (C) 2007-2013 Bruce Chang
++ *  Copyright (C) 2013 John Crispin <[email protected]>
++ *
++ *  This program is free software; you can redistribute it and/or modify it
++ *  under the terms of the GNU General Public License version 2 as published
++ *  by the Free Software Foundation.
++ */
++
++#include <linux/types.h>
++#include <linux/pci.h>
++#include <linux/io.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/interrupt.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/of_irq.h>
++#include <linux/of_pci.h>
++#include <linux/reset.h>
++#include <linux/platform_device.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++#include <asm/mach-ralink/mt7620.h>
++
++#define RALINK_PCI_MM_MAP_BASE		0x20000000
++#define RALINK_PCI_IO_MAP_BASE		0x10160000
++
++#define RALINK_INT_PCIE0		4
++#define RALINK_SYSCFG1			0x14
++#define RALINK_CLKCFG1			0x30
++#define RALINK_GPIOMODE			0x60
++#define RALINK_PCIE_CLK_GEN		0x7c
++#define RALINK_PCIE_CLK_GEN1		0x80
++#define PCIEPHY0_CFG			0x90
++#define PPLL_CFG1			0x9c
++#define PPLL_DRV			0xa0
++#define PDRV_SW_SET			(1<<31)
++#define LC_CKDRVPD_			(1<<19)
++
++#define RALINK_PCI_CONFIG_ADDR		0x20
++#define RALINK_PCI_CONFIG_DATA_VIRT_REG	0x24
++#define MEMORY_BASE			0x0
++#define RALINK_PCIE0_RST		(1<<26)
++#define RALINK_PCI_BASE			0xB0140000
++#define RALINK_PCI_MEMBASE		0x28
++#define RALINK_PCI_IOBASE		0x2C
++
++#define RT6855_PCIE0_OFFSET		0x2000
++
++#define RALINK_PCI_PCICFG_ADDR		0x00
++#define RALINK_PCI0_BAR0SETUP_ADDR	0x10
++#define RALINK_PCI0_IMBASEBAR0_ADDR	0x18
++#define RALINK_PCI0_ID			0x30
++#define RALINK_PCI0_CLASS		0x34
++#define RALINK_PCI0_SUBID		0x38
++#define RALINK_PCI0_STATUS		0x50
++#define RALINK_PCI_PCIMSK_ADDR		0x0C
++
++#define RALINK_PCIEPHY_P0_CTL_OFFSET	0x7498
++#define RALINK_PCIE0_CLK_EN		(1 << 26)
++
++#define BUSY				0x80000000
++#define WAITRETRY_MAX			10
++#define WRITE_MODE			(1UL << 23)
++#define DATA_SHIFT			0
++#define ADDR_SHIFT			8
++
++static void __iomem *bridge_base;
++static void __iomem *pcie_base;
++
++static struct reset_control *rstpcie0;
++
++static inline void bridge_w32(u32 val, unsigned reg)
++{
++	iowrite32(val, bridge_base + reg);
++}
++
++static inline u32 bridge_r32(unsigned reg)
++{
++	return ioread32(bridge_base + reg);
++}
++
++static inline void pcie_w32(u32 val, unsigned reg)
++{
++	iowrite32(val, pcie_base + reg);
++}
++
++static inline u32 pcie_r32(unsigned reg)
++{
++	return ioread32(pcie_base + reg);
++}
++
++static inline void pcie_m32(u32 clr, u32 set, unsigned reg)
++{
++	u32 val = pcie_r32(reg);
++
++	val &= ~clr;
++	val |= set;
++	pcie_w32(val, reg);
++}
++
++static int wait_pciephy_busy(void)
++{
++	unsigned long reg_value = 0x0, retry = 0;
++
++	while (1) {
++		reg_value = pcie_r32(PCIEPHY0_CFG);
++
++		if (reg_value & BUSY)
++			mdelay(100);
++		else
++			break;
++		if (retry++ > WAITRETRY_MAX){
++			printk("PCIE-PHY retry failed.\n");
++			return -1;
++		}
++	}
++	return 0;
++}
++
++static void pcie_phy(unsigned long addr, unsigned long val)
++{
++	wait_pciephy_busy();
++	pcie_w32(WRITE_MODE | (val << DATA_SHIFT) | (addr << ADDR_SHIFT), PCIEPHY0_CFG);
++	mdelay(1);
++	wait_pciephy_busy();
++}
++
++static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val)
++{
++	unsigned int slot = PCI_SLOT(devfn);
++	u8 func = PCI_FUNC(devfn);
++	u32 address;
++	u32 data;
++	u32 num = 0;
++
++	if (bus)
++		num = bus->number;
++
++	address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
++	bridge_w32(address, RALINK_PCI_CONFIG_ADDR);
++	data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRT_REG);
++
++	switch (size) {
++	case 1:
++		*val = (data >> ((where & 3) << 3)) & 0xff;
++		break;
++	case 2:
++		*val = (data >> ((where & 3) << 3)) & 0xffff;
++		break;
++	case 4:
++		*val = data;
++		break;
++	}
++
++	return PCIBIOS_SUCCESSFUL;
++}
++
++static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
++{
++	unsigned int slot = PCI_SLOT(devfn);
++	u8 func = PCI_FUNC(devfn);
++	u32 address;
++	u32 data;
++	u32 num = 0;
++
++	if (bus)
++		num = bus->number;
++
++	address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
++	bridge_w32(address, RALINK_PCI_CONFIG_ADDR);
++	data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRT_REG);
++
++	switch (size) {
++	case 1:
++		data = (data & ~(0xff << ((where & 3) << 3))) |
++			(val << ((where & 3) << 3));
++		break;
++	case 2:
++		data = (data & ~(0xffff << ((where & 3) << 3))) |
++			(val << ((where & 3) << 3));
++		break;
++	case 4:
++		data = val;
++		break;
++	}
++
++	bridge_w32(data, RALINK_PCI_CONFIG_DATA_VIRT_REG);
++
++	return PCIBIOS_SUCCESSFUL;
++}
++
++struct pci_ops mt7620_pci_ops= {
++	.read	= pci_config_read,
++	.write	= pci_config_write,
++};
++
++static struct resource mt7620_res_pci_mem1;
++static struct resource mt7620_res_pci_io1;
++struct pci_controller mt7620_controller = {
++	.pci_ops	= &mt7620_pci_ops,
++	.mem_resource	= &mt7620_res_pci_mem1,
++	.mem_offset	= 0x00000000UL,
++	.io_resource	= &mt7620_res_pci_io1,
++	.io_offset	= 0x00000000UL,
++	.io_map_base	= 0xa0000000,
++};
++
++static int mt7620_pci_hw_init(struct platform_device *pdev) {
++	/* PCIE: bypass PCIe DLL */
++	pcie_phy(0x0, 0x80);
++	pcie_phy(0x1, 0x04);
++
++	/* PCIE: Elastic buffer control */
++	pcie_phy(0x68, 0xB4);
++
++	pcie_m32(0, BIT(1), RALINK_PCI_PCICFG_ADDR);
++
++	reset_control_assert(rstpcie0);
++
++	rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
++	rt_sysc_m32(BIT(19), BIT(31), PPLL_DRV);
++
++	reset_control_deassert(rstpcie0);
++	rt_sysc_m32(0, RALINK_PCIE0_CLK_EN, RALINK_CLKCFG1);
++
++	mdelay(100);
++
++	if (!(rt_sysc_r32(PPLL_CFG1) & BIT(23))) {
++		dev_err(&pdev->dev, "MT7620 PPLL unlock\n");
++		reset_control_assert(rstpcie0);
++		rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
++		return -1;
++	}
++	rt_sysc_m32(BIT(18) | BIT(17), BIT(19) | BIT(31), PPLL_DRV);
++
++	return 0;
++}
++
++static int mt7628_pci_hw_init(struct platform_device *pdev) {
++	u32 val = 0;
++
++	rt_sysc_m32(BIT(16), 0, RALINK_GPIOMODE);
++	reset_control_deassert(rstpcie0);
++	rt_sysc_m32(0, RALINK_PCIE0_CLK_EN, RALINK_CLKCFG1);
++	mdelay(100);
++
++	pcie_m32(~0xff, 0x5, RALINK_PCIEPHY_P0_CTL_OFFSET);
++
++	pci_config_read(NULL, 0, 0x70c, 4, &val);
++	val &= ~(0xff) << 8;
++	val |= 0x50 << 8;
++	pci_config_write(NULL, 0, 0x70c, 4, val);
++
++	pci_config_read(NULL, 0, 0x70c, 4, &val);
++	dev_err(&pdev->dev, "Port 0 N_FTS = %x\n", (unsigned int) val);
++
++	return 0;
++}
++
++static int mt7620_pci_probe(struct platform_device *pdev)
++{
++	struct resource *bridge_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	struct resource *pcie_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++	u32 val = 0;
++
++	rstpcie0 = devm_reset_control_get(&pdev->dev, "pcie0");
++	if (IS_ERR(rstpcie0))
++		return PTR_ERR(rstpcie0);
++
++	bridge_base = devm_ioremap_resource(&pdev->dev, bridge_res);
++        if (!bridge_base)
++		return -ENOMEM;
++
++	pcie_base = devm_ioremap_resource(&pdev->dev, pcie_res);
++        if (!pcie_base)
++		return -ENOMEM;
++
++	iomem_resource.start = 0;
++	iomem_resource.end = ~0;
++	ioport_resource.start = 0;
++	ioport_resource.end = ~0;
++
++	/* bring up the pci core */
++	switch (ralink_soc) {
++	case MT762X_SOC_MT7620A:
++		if (mt7620_pci_hw_init(pdev))
++			return -1;
++		break;
++
++	case MT762X_SOC_MT7628AN:
++		if (mt7628_pci_hw_init(pdev))
++			return -1;
++		break;
++
++	default:
++		dev_err(&pdev->dev, "pcie is not supported on this hardware\n");
++		return -1;
++	}
++	mdelay(50);
++
++	/* enable write access */
++	pcie_m32(BIT(1), 0, RALINK_PCI_PCICFG_ADDR);
++	mdelay(100);
++
++	/* check if there is a card present */
++	if ((pcie_r32(RALINK_PCI0_STATUS) & 0x1) == 0) {
++		reset_control_assert(rstpcie0);
++		rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
++		if (ralink_soc == MT762X_SOC_MT7620A)
++			rt_sysc_m32(LC_CKDRVPD_, PDRV_SW_SET, PPLL_DRV);
++		dev_err(&pdev->dev, "PCIE0 no card, disable it(RST&CLK)\n");
++		return -1;
++	}
++
++	/* setup ranges */
++	bridge_w32(0xffffffff, RALINK_PCI_MEMBASE);
++	bridge_w32(RALINK_PCI_IO_MAP_BASE, RALINK_PCI_IOBASE);
++
++	pcie_w32(0x7FFF0001, RALINK_PCI0_BAR0SETUP_ADDR);
++	pcie_w32(MEMORY_BASE, RALINK_PCI0_IMBASEBAR0_ADDR);
++	pcie_w32(0x06040001, RALINK_PCI0_CLASS);
++
++	/* enable interrupts */
++	pcie_m32(0, BIT(20), RALINK_PCI_PCIMSK_ADDR);
++
++	/* voodoo from the SDK driver */
++	pci_config_read(NULL, 0, 4, 4, &val);
++	pci_config_write(NULL, 0, 4, 4, val | 0x7);
++
++	pci_load_of_ranges(&mt7620_controller, pdev->dev.of_node);
++	register_pci_controller(&mt7620_controller);
++
++	return 0;
++}
++
++int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
++{
++	u16 cmd;
++	u32 val;
++	int irq = 0;
++
++	if ((dev->bus->number == 0) && (slot == 0)) {
++		pcie_w32(0x7FFF0001, RALINK_PCI0_BAR0SETUP_ADDR); //open 7FFF:2G; ENABLE
++		pci_config_write(dev->bus, 0, PCI_BASE_ADDRESS_0, 4, MEMORY_BASE);
++		pci_config_read(dev->bus, 0, PCI_BASE_ADDRESS_0, 4, &val);
++	} else if ((dev->bus->number == 1) && (slot == 0x0)) {
++		irq = RALINK_INT_PCIE0;
++	} else {
++		dev_err(&dev->dev, "no irq found - bus=0x%x, slot = 0x%x\n", dev->bus->number, slot);
++		return 0;
++	}
++	dev_err(&dev->dev, "card - bus=0x%x, slot = 0x%x irq=%d\n", dev->bus->number, slot, irq);
++
++	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 0x14);  //configure cache line size 0x14
++	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xFF);  //configure latency timer 0x10
++	pci_read_config_word(dev, PCI_COMMAND, &cmd);
++
++	// FIXME
++	cmd = cmd | PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
++	pci_write_config_word(dev, PCI_COMMAND, cmd);
++	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
++	//pci_write_config_byte(dev, PCI_INTERRUPT_PIN, dev->irq);
++
++	return irq;
++}
++
++int pcibios_plat_dev_init(struct pci_dev *dev)
++{
++	return 0;
++}
++
++static const struct of_device_id mt7620_pci_ids[] = {
++	{ .compatible = "mediatek,mt7620-pci" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7620_pci_ids);
++
++static struct platform_driver mt7620_pci_driver = {
++	.probe = mt7620_pci_probe,
++	.driver = {
++		.name = "mt7620-pci",
++		.owner = THIS_MODULE,
++		.of_match_table = of_match_ptr(mt7620_pci_ids),
++	},
++};
++
++static int __init mt7620_pci_init(void)
++{
++	return platform_driver_register(&mt7620_pci_driver);
++}
++
++arch_initcall(mt7620_pci_init);
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -43,6 +43,7 @@ choice
+ 
+ 	config SOC_MT7620
+ 		bool "MT7620/8"
++		select HW_HAS_PCI
+ 
+ 	config SOC_MT7621
+ 		bool "MT7621"

target/linux/ramips/patches-4.4/0010-arch-mips-ralink-add-spi1-clocks.patch

@@ -0,0 +1,44 @@
+From 39ce22c870f4503bed5e451acfcab21eba3b6239 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:49:07 +0100
+Subject: [PATCH 10/53] arch: mips: ralink: add spi1 clocks
+
+based on f3bc64d6d1f21c1b92d75f233a37b75d77af6963
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/mt7620.c |    1 +
+ arch/mips/ralink/rt305x.c |    1 +
+ arch/mips/ralink/rt3883.c |    1 +
+ 3 files changed, 3 insertions(+)
+
+--- a/arch/mips/ralink/mt7620.c
++++ b/arch/mips/ralink/mt7620.c
+@@ -436,6 +436,7 @@ void __init ralink_clk_init(void)
+ 	ralink_clk_add("10000100.timer", periph_rate);
+ 	ralink_clk_add("10000120.watchdog", periph_rate);
+ 	ralink_clk_add("10000b00.spi", sys_rate);
++	ralink_clk_add("10000b40.spi", sys_rate);
+ 	ralink_clk_add("10000c00.uartlite", periph_rate);
+ 	ralink_clk_add("10180000.wmac", xtal_rate);
+ 
+--- a/arch/mips/ralink/rt305x.c
++++ b/arch/mips/ralink/rt305x.c
+@@ -201,6 +201,7 @@ void __init ralink_clk_init(void)
+ 	ralink_clk_add("cpu", cpu_rate);
+ 	ralink_clk_add("sys", sys_rate);
+ 	ralink_clk_add("10000b00.spi", sys_rate);
++	ralink_clk_add("10000b40.spi", sys_rate);
+ 	ralink_clk_add("10000100.timer", wdt_rate);
+ 	ralink_clk_add("10000120.watchdog", wdt_rate);
+ 	ralink_clk_add("10000500.uart", uart_rate);
+--- a/arch/mips/ralink/rt3883.c
++++ b/arch/mips/ralink/rt3883.c
+@@ -109,6 +109,7 @@ void __init ralink_clk_init(void)
+ 	ralink_clk_add("10000120.watchdog", sys_rate);
+ 	ralink_clk_add("10000500.uart", 40000000);
+ 	ralink_clk_add("10000b00.spi", sys_rate);
++	ralink_clk_add("10000b40.spi", sys_rate);
+ 	ralink_clk_add("10000c00.uartlite", 40000000);
+ 	ralink_clk_add("10100000.ethernet", sys_rate);
+ 	ralink_clk_add("10180000.wmac", 40000000);

target/linux/ramips/patches-4.4/0013-owrt-hack-fix-mt7688-cache-issue.patch

@@ -0,0 +1,28 @@
+From 5ede027f6c4a57ed25da872420508b7f1168b36b Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:15:32 +0100
+Subject: [PATCH 13/53] owrt: hack: fix mt7688 cache issue
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/kernel/setup.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/mips/kernel/setup.c
++++ b/arch/mips/kernel/setup.c
+@@ -696,7 +696,6 @@ static void __init arch_mem_init(char **
+ 				crashk_res.end - crashk_res.start + 1,
+ 				BOOTMEM_DEFAULT);
+ #endif
+-	device_tree_init();
+ 	sparse_init();
+ 	plat_swiotlb_setup();
+ 	paging_init();
+@@ -806,6 +805,7 @@ void __init setup_arch(char **cmdline_p)
+ 	prefill_possible_map();
+ 
+ 	cpu_cache_init();
++	device_tree_init();
+ }
+ 
+ unsigned long kernelsp[NR_CPUS];

target/linux/ramips/patches-4.4/0014-arch-mips-cleanup-cevt-rt3352.patch

@@ -0,0 +1,165 @@
+From e6ed424c36458aff8738fb1fbb0141196678058a Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:17:23 +0100
+Subject: [PATCH 14/53] arch: mips: cleanup cevt-rt3352
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/cevt-rt3352.c |   85 ++++++++++++++++++++++++++--------------
+ 1 file changed, 56 insertions(+), 29 deletions(-)
+
+--- a/arch/mips/ralink/cevt-rt3352.c
++++ b/arch/mips/ralink/cevt-rt3352.c
+@@ -52,7 +52,7 @@ static inline void mt7620_freq_scaling(s
+ 
+ 	sdev->freq_scale = status;
+ 
+-	pr_info("%s: %s autosleep mode\n", systick.dev.name,
++	pr_info("%s: %s autosleep mode\n", sdev->dev.name,
+ 			(status) ? ("enable") : ("disable"));
+ 	if (status)
+ 		rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) | SLEEP_EN, CLK_LUT_CFG);
+@@ -60,18 +60,33 @@ static inline void mt7620_freq_scaling(s
+ 		rt_sysc_w32(rt_sysc_r32(CLK_LUT_CFG) & ~SLEEP_EN, CLK_LUT_CFG);
+ }
+ 
++static inline unsigned int read_count(struct systick_device *sdev)
++{
++	return ioread32(sdev->membase + SYSTICK_COUNT);
++}
++
++static inline unsigned int read_compare(struct systick_device *sdev)
++{
++	return ioread32(sdev->membase + SYSTICK_COMPARE);
++}
++
++static inline void write_compare(struct systick_device *sdev, unsigned int val)
++{
++	iowrite32(val, sdev->membase + SYSTICK_COMPARE);
++}
++
+ static int systick_next_event(unsigned long delta,
+ 				struct clock_event_device *evt)
+ {
+ 	struct systick_device *sdev;
+-	u32 count;
++	int res;
+ 
+ 	sdev = container_of(evt, struct systick_device, dev);
+-	count = ioread32(sdev->membase + SYSTICK_COUNT);
+-	count = (count + delta) % SYSTICK_FREQ;
+-	iowrite32(count, sdev->membase + SYSTICK_COMPARE);
++	delta += read_count(sdev);
++	write_compare(sdev, delta);
++	res = ((int)(read_count(sdev) - delta) >= 0) ? -ETIME : 0;
+ 
+-	return 0;
++	return res;
+ }
+ 
+ static void systick_event_handler(struct clock_event_device *dev)
+@@ -81,20 +96,25 @@ static void systick_event_handler(struct
+ 
+ static irqreturn_t systick_interrupt(int irq, void *dev_id)
+ {
+-	struct clock_event_device *dev = (struct clock_event_device *) dev_id;
++	int ret = 0;
++	struct clock_event_device *cdev;
++	struct systick_device *sdev;
+ 
+-	dev->event_handler(dev);
++	if (read_c0_cause() & STATUSF_IP7) {
++		cdev = (struct clock_event_device *) dev_id;
++		sdev = container_of(cdev, struct systick_device, dev);
++
++		/* Clear Count/Compare Interrupt */
++		write_compare(sdev, read_compare(sdev));
++		cdev->event_handler(cdev);
++		ret = 1;
++	}
+ 
+-	return IRQ_HANDLED;
++	return IRQ_RETVAL(ret);
+ }
+ 
+ static struct systick_device systick = {
+ 	.dev = {
+-		/*
+-		 * cevt-r4k uses 300, make sure systick
+-		 * gets used if available
+-		 */
+-		.rating			= 310,
+ 		.features		= CLOCK_EVT_FEAT_ONESHOT,
+ 		.set_next_event		= systick_next_event,
+ 		.set_state_shutdown	= systick_shutdown,
+@@ -116,9 +136,9 @@ static int systick_shutdown(struct clock
+ 	sdev = container_of(evt, struct systick_device, dev);
+ 
+ 	if (sdev->irq_requested)
+-		free_irq(systick.dev.irq, &systick_irqaction);
++		remove_irq(systick.dev.irq, &systick_irqaction);
+ 	sdev->irq_requested = 0;
+-	iowrite32(0, systick.membase + SYSTICK_CONFIG);
++	iowrite32(CFG_CNT_EN, systick.membase + SYSTICK_CONFIG);
+ 
+ 	if (systick_freq_scaling)
+ 		systick_freq_scaling(sdev, 0);
+@@ -145,38 +165,45 @@ static int systick_set_oneshot(struct cl
+ }
+ 
+ static const struct of_device_id systick_match[] = {
+-	{ .compatible = "ralink,mt7620-systick", .data = mt7620_freq_scaling},
++	{ .compatible = "ralink,mt7620a-systick", .data = mt7620_freq_scaling},
+ 	{},
+ };
+ 
+ static void __init ralink_systick_init(struct device_node *np)
+ {
+ 	const struct of_device_id *match;
++	int rating = 200;
+ 
+ 	systick.membase = of_iomap(np, 0);
+ 	if (!systick.membase)
+ 		return;
+ 
+ 	match = of_match_node(systick_match, np);
+-	if (match)
++	if (match) {
+ 		systick_freq_scaling = match->data;
++		/*
++		 * cevt-r4k uses 300, make sure systick
++		 * gets used if available
++		 */
++		rating = 310;
++	}
+ 
+-	systick_irqaction.name = np->name;
+-	systick.dev.name = np->name;
+-	clockevents_calc_mult_shift(&systick.dev, SYSTICK_FREQ, 60);
+-	systick.dev.max_delta_ns = clockevent_delta2ns(0x7fff, &systick.dev);
+-	systick.dev.min_delta_ns = clockevent_delta2ns(0x3, &systick.dev);
++	/* enable counter than register clock source */
++	iowrite32(CFG_CNT_EN, systick.membase + SYSTICK_CONFIG);
++	clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name,
++			SYSTICK_FREQ, rating, 16, clocksource_mmio_readl_up);
++
++	/* register clock event */
+ 	systick.dev.irq = irq_of_parse_and_map(np, 0);
+ 	if (!systick.dev.irq) {
+ 		pr_err("%s: request_irq failed", np->name);
+ 		return;
+ 	}
+-
+-	clocksource_mmio_init(systick.membase + SYSTICK_COUNT, np->name,
+-			SYSTICK_FREQ, 301, 16, clocksource_mmio_readl_up);
+-
+-	clockevents_register_device(&systick.dev);
+-
++	systick_irqaction.name = np->name;
++	systick.dev.name = np->name;
++	systick.dev.rating = rating;
++	systick.dev.cpumask = cpumask_of(0);
++	clockevents_config_and_register(&systick.dev, SYSTICK_FREQ, 0x3, 0x7fff);
+ 	pr_info("%s: running - mult: %d, shift: %d\n",
+ 			np->name, systick.dev.mult, systick.dev.shift);
+ }

target/linux/ramips/patches-4.4/0015-arch-mips-do-not-select-illegal-access-driver-by-def.patch

@@ -0,0 +1,25 @@
+From 9e6ce539092a1dd605a20bf73c655a9de58d8641 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:18:05 +0100
+Subject: [PATCH 15/53] arch: mips: do not select illegal access driver by
+ default
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/Kconfig |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -13,9 +13,9 @@ config CLKEVT_RT3352
+ 	select CEVT_SYSTICK_QUIRK
+ 
+ config RALINK_ILL_ACC
+-	bool
++	bool "illegal access irq"
+ 	depends on SOC_RT305X
+-	default y
++	default n
+ 
+ config IRQ_INTC
+ 	bool

target/linux/ramips/patches-4.4/0019-arch-mips-ralink-add-mt7621-cpu-feature-overrides.patch

@@ -0,0 +1,79 @@
+From 43372c2be9fcf68bc40c322039c75893ce4e982c Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:20:47 +0100
+Subject: [PATCH 19/53] arch: mips: ralink: add mt7621 cpu-feature-overrides
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ .../asm/mach-ralink/mt7621/cpu-feature-overrides.h |   65 ++++++++++++++++++++
+ 1 file changed, 65 insertions(+)
+ create mode 100644 arch/mips/include/asm/mach-ralink/mt7621/cpu-feature-overrides.h
+
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ralink/mt7621/cpu-feature-overrides.h
+@@ -0,0 +1,65 @@
++/*
++ * Ralink MT7621 specific CPU feature overrides
++ *
++ * Copyright (C) 2008-2009 Gabor Juhos <[email protected]>
++ * Copyright (C) 2008 Imre Kaloz <[email protected]>
++ * Copyright (C) 2015 Felix Fietkau <[email protected]>
++ *
++ * This file was derived from: include/asm-mips/cpu-features.h
++ *	Copyright (C) 2003, 2004 Ralf Baechle
++ *	Copyright (C) 2004 Maciej W. Rozycki
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ */
++#ifndef _MT7621_CPU_FEATURE_OVERRIDES_H
++#define _MT7621_CPU_FEATURE_OVERRIDES_H
++
++#define cpu_has_tlb		1
++#define cpu_has_4kex		1
++#define cpu_has_3k_cache	0
++#define cpu_has_4k_cache	1
++#define cpu_has_tx39_cache	0
++#define cpu_has_sb1_cache	0
++#define cpu_has_fpu		0
++#define cpu_has_32fpr		0
++#define cpu_has_counter		1
++#define cpu_has_watch		1
++#define cpu_has_divec		1
++
++#define cpu_has_prefetch	1
++#define cpu_has_ejtag		1
++#define cpu_has_llsc		1
++
++#define cpu_has_mips16		1
++#define cpu_has_mdmx		0
++#define cpu_has_mips3d		0
++#define cpu_has_smartmips	0
++
++#define cpu_has_mips32r1	1
++#define cpu_has_mips32r2	1
++#define cpu_has_mips64r1	0
++#define cpu_has_mips64r2	0
++
++#define cpu_has_dsp		1
++#define cpu_has_dsp2		0
++#define cpu_has_mipsmt		1
++
++#define cpu_has_64bits		0
++#define cpu_has_64bit_zero_reg	0
++#define cpu_has_64bit_gp_regs	0
++#define cpu_has_64bit_addresses	0
++
++#define cpu_dcache_line_size()	32
++#define cpu_icache_line_size()	32
++
++#define cpu_has_dc_aliases	0
++#define cpu_has_vtag_icache	0
++
++#define cpu_has_rixi		0
++#define cpu_has_tlbinv		0
++#define cpu_has_userlocal	1
++
++#endif /* _MT7621_CPU_FEATURE_OVERRIDES_H */

target/linux/ramips/patches-4.4/0022-arch-mips-ralink-proper-vendor-id-srtring.patch

@@ -0,0 +1,21 @@
+From 2e5d90398aacde3e46dfd87e6f716b00a0ffcd83 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:30:11 +0100
+Subject: [PATCH 22/53] arch: mips: ralink: proper vendor id srtring
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/mt7620.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/mips/ralink/mt7620.c
++++ b/arch/mips/ralink/mt7620.c
+@@ -553,7 +553,7 @@ void prom_soc_init(struct ralink_soc_inf
+ 	}
+ 
+ 	snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
+-		"Ralink %s ver:%u eco:%u",
++		"MediaTek %s ver:%u eco:%u",
+ 		name,
+ 		(rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
+ 		(rev & CHIP_REV_ECO_MASK));

target/linux/ramips/patches-4.4/0024-GPIO-add-named-gpio-exports.patch

@@ -0,0 +1,166 @@
+From 4267880319bc1a2270d352e0ded6d6386242a7ef Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Tue, 12 Aug 2014 20:49:27 +0200
+Subject: [PATCH 24/53] GPIO: add named gpio exports
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/gpio/gpiolib-of.c     |   68 +++++++++++++++++++++++++++++++++++++++++
+ drivers/gpio/gpiolib-sysfs.c  |   10 +++++-
+ include/asm-generic/gpio.h    |    6 ++++
+ include/linux/gpio/consumer.h |    8 +++++
+ 4 files changed, 91 insertions(+), 1 deletion(-)
+
+--- a/drivers/gpio/gpiolib-of.c
++++ b/drivers/gpio/gpiolib-of.c
+@@ -23,6 +23,8 @@
+ #include <linux/pinctrl/pinctrl.h>
+ #include <linux/slab.h>
+ #include <linux/gpio/machine.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
+ 
+ #include "gpiolib.h"
+ 
+@@ -450,3 +452,69 @@ void of_gpiochip_remove(struct gpio_chip
+ 	gpiochip_remove_pin_ranges(chip);
+ 	of_node_put(chip->of_node);
+ }
++
++static struct of_device_id gpio_export_ids[] = {
++	{ .compatible = "gpio-export" },
++	{ /* sentinel */ }
++};
++
++static int __init of_gpio_export_probe(struct platform_device *pdev)
++{
++	struct device_node *np = pdev->dev.of_node;
++	struct device_node *cnp;
++	u32 val;
++	int nb = 0;
++
++	for_each_child_of_node(np, cnp) {
++		const char *name = NULL;
++		int gpio;
++		bool dmc;
++		int max_gpio = 1;
++		int i;
++
++		of_property_read_string(cnp, "gpio-export,name", &name);
++
++		if (!name)
++			max_gpio = of_gpio_count(cnp);
++
++		for (i = 0; i < max_gpio; i++) {
++			unsigned flags = 0;
++			enum of_gpio_flags of_flags;
++
++			gpio = of_get_gpio_flags(cnp, i, &of_flags);
++
++			if (of_flags == OF_GPIO_ACTIVE_LOW)
++				flags |= GPIOF_ACTIVE_LOW;
++
++			if (!of_property_read_u32(cnp, "gpio-export,output", &val))
++				flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
++			else
++				flags |= GPIOF_IN;
++
++			if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np)))
++				continue;
++
++			dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change");
++			gpio_export_with_name(gpio, dmc, name);
++			nb++;
++		}
++	}
++
++	dev_info(&pdev->dev, "%d gpio(s) exported\n", nb);
++
++	return 0;
++}
++
++static struct platform_driver gpio_export_driver = {
++	.driver		= {
++		.name		= "gpio-export",
++		.owner	= THIS_MODULE,
++		.of_match_table	= of_match_ptr(gpio_export_ids),
++	},
++};
++
++static int __init of_gpio_export_init(void)
++{
++	return platform_driver_probe(&gpio_export_driver, of_gpio_export_probe);
++}
++device_initcall(of_gpio_export_init);
+--- a/drivers/gpio/gpiolib-sysfs.c
++++ b/drivers/gpio/gpiolib-sysfs.c
+@@ -544,7 +544,7 @@ static struct class gpio_class = {
+  *
+  * Returns zero on success, else an error.
+  */
+-int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
++int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name)
+ {
+ 	struct gpio_chip	*chip;
+ 	struct gpiod_data	*data;
+@@ -604,6 +604,8 @@ int gpiod_export(struct gpio_desc *desc,
+ 	offset = gpio_chip_hwgpio(desc);
+ 	if (chip->names && chip->names[offset])
+ 		ioname = chip->names[offset];
++	if (name)
++		ioname = name;
+ 
+ 	dev = device_create_with_groups(&gpio_class, chip->dev,
+ 					MKDEV(0, 0), data, gpio_groups,
+@@ -625,6 +627,12 @@ err_unlock:
+ 	gpiod_dbg(desc, "%s: status %d\n", __func__, status);
+ 	return status;
+ }
++EXPORT_SYMBOL_GPL(__gpiod_export);
++
++int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
++{
++	return __gpiod_export(desc, direction_may_change, NULL);
++}
+ EXPORT_SYMBOL_GPL(gpiod_export);
+ 
+ static int match_export(struct device *dev, const void *desc)
+--- a/include/asm-generic/gpio.h
++++ b/include/asm-generic/gpio.h
+@@ -122,6 +122,12 @@ static inline int gpio_export(unsigned g
+ 	return gpiod_export(gpio_to_desc(gpio), direction_may_change);
+ }
+ 
++int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
++static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
++{
++	return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
++}
++
+ static inline int gpio_export_link(struct device *dev, const char *name,
+ 				   unsigned gpio)
+ {
+--- a/include/linux/gpio/consumer.h
++++ b/include/linux/gpio/consumer.h
+@@ -427,6 +427,7 @@ static inline struct gpio_desc *devm_get
+ 
+ #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
+ 
++int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
+ int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
+ int gpiod_export_link(struct device *dev, const char *name,
+ 		      struct gpio_desc *desc);
+@@ -434,6 +435,13 @@ void gpiod_unexport(struct gpio_desc *de
+ 
+ #else  /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
+ 
++static inline int _gpiod_export(struct gpio_desc *desc,
++			       bool direction_may_change,
++			       const char *name)
++{
++	return -ENOSYS;
++}
++
+ static inline int gpiod_export(struct gpio_desc *desc,
+ 			       bool direction_may_change)
+ {

target/linux/ramips/patches-4.4/0025-pinctrl-ralink-add-pinctrl-driver.patch

@@ -0,0 +1,524 @@
+From 7adbe9a88c33c6e362a10b109d963b5500a21f00 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:34:05 +0100
+Subject: [PATCH 25/53] pinctrl: ralink: add pinctrl driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/Kconfig                |    2 +
+ drivers/pinctrl/Kconfig          |    5 +
+ drivers/pinctrl/Makefile         |    1 +
+ drivers/pinctrl/pinctrl-rt2880.c |  474 ++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 482 insertions(+)
+ create mode 100644 drivers/pinctrl/pinctrl-rt2880.c
+
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -585,6 +585,8 @@ config RALINK
+ 	select CLKDEV_LOOKUP
+ 	select ARCH_HAS_RESET_CONTROLLER
+ 	select RESET_CONTROLLER
++	select PINCTRL
++	select PINCTRL_RT2880
+ 
+ config SGI_IP22
+ 	bool "SGI IP22 (Indy/Indigo2)"
+--- a/drivers/pinctrl/Kconfig
++++ b/drivers/pinctrl/Kconfig
+@@ -114,6 +114,11 @@ config PINCTRL_LPC18XX
+ 	help
+ 	  Pinctrl driver for NXP LPC18xx/43xx System Control Unit (SCU).
+ 
++config PINCTRL_RT2880
++	bool
++	depends on RALINK
++	select PINMUX
++
+ config PINCTRL_FALCON
+ 	bool
+ 	depends on SOC_FALCON
+--- a/drivers/pinctrl/Makefile
++++ b/drivers/pinctrl/Makefile
+@@ -20,6 +20,7 @@ obj-$(CONFIG_PINCTRL_MESON)	+= meson/
+ obj-$(CONFIG_PINCTRL_PALMAS)	+= pinctrl-palmas.o
+ obj-$(CONFIG_PINCTRL_PISTACHIO)	+= pinctrl-pistachio.o
+ obj-$(CONFIG_PINCTRL_ROCKCHIP)	+= pinctrl-rockchip.o
++obj-$(CONFIG_PINCTRL_RT2880)	+= pinctrl-rt2880.o
+ obj-$(CONFIG_PINCTRL_SINGLE)	+= pinctrl-single.o
+ obj-$(CONFIG_PINCTRL_SIRF)	+= sirf/
+ obj-$(CONFIG_PINCTRL_TEGRA)	+= pinctrl-tegra.o
+--- /dev/null
++++ b/drivers/pinctrl/pinctrl-rt2880.c
+@@ -0,0 +1,472 @@
++/*
++ *  linux/drivers/pinctrl/pinctrl-rt2880.c
++ *
++ *  This program is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License version 2 as
++ *  publishhed by the Free Software Foundation.
++ *
++ *  Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/device.h>
++#include <linux/io.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/of.h>
++#include <linux/pinctrl/pinctrl.h>
++#include <linux/pinctrl/pinconf.h>
++#include <linux/pinctrl/pinmux.h>
++#include <linux/pinctrl/consumer.h>
++#include <linux/pinctrl/machine.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++#include <asm/mach-ralink/pinmux.h>
++#include <asm/mach-ralink/mt7620.h>
++
++#include "core.h"
++
++#define SYSC_REG_GPIO_MODE	0x60
++#define SYSC_REG_GPIO_MODE2	0x64
++
++struct rt2880_priv {
++	struct device *dev;
++
++	struct pinctrl_pin_desc *pads;
++	struct pinctrl_desc *desc;
++
++	struct rt2880_pmx_func **func;
++	int func_count;
++
++	struct rt2880_pmx_group *groups;
++	const char **group_names;
++	int group_count;
++
++	uint8_t *gpio;
++	int max_pins;
++};
++
++static int rt2880_get_group_count(struct pinctrl_dev *pctrldev)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	return p->group_count;
++}
++
++static const char *rt2880_get_group_name(struct pinctrl_dev *pctrldev,
++					 unsigned group)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	if (group >= p->group_count)
++		return NULL;
++
++	return p->group_names[group];
++}
++
++static int rt2880_get_group_pins(struct pinctrl_dev *pctrldev,
++				 unsigned group,
++				 const unsigned **pins,
++				 unsigned *num_pins)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	if (group >= p->group_count)
++		return -EINVAL;
++
++	*pins = p->groups[group].func[0].pins;
++	*num_pins = p->groups[group].func[0].pin_count;
++
++	return 0;
++}
++
++static void rt2880_pinctrl_dt_free_map(struct pinctrl_dev *pctrldev,
++				    struct pinctrl_map *map, unsigned num_maps)
++{
++	int i;
++
++	for (i = 0; i < num_maps; i++)
++		if (map[i].type == PIN_MAP_TYPE_CONFIGS_PIN ||
++		    map[i].type == PIN_MAP_TYPE_CONFIGS_GROUP)
++			kfree(map[i].data.configs.configs);
++	kfree(map);
++}
++
++static void rt2880_pinctrl_pin_dbg_show(struct pinctrl_dev *pctrldev,
++					struct seq_file *s,
++					unsigned offset)
++{
++	seq_printf(s, "ralink pio");
++}
++
++static void rt2880_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctrldev,
++				struct device_node *np,
++				struct pinctrl_map **map)
++{
++        const char *function;
++	int func = of_property_read_string(np, "ralink,function", &function);
++	int grps = of_property_count_strings(np, "ralink,group");
++	int i;
++
++	if (func || !grps)
++		return;
++
++	for (i = 0; i < grps; i++) {
++	        const char *group;
++
++		of_property_read_string_index(np, "ralink,group", i, &group);
++
++		(*map)->type = PIN_MAP_TYPE_MUX_GROUP;
++		(*map)->name = function;
++		(*map)->data.mux.group = group;
++		(*map)->data.mux.function = function;
++		(*map)++;
++	}
++}
++
++static int rt2880_pinctrl_dt_node_to_map(struct pinctrl_dev *pctrldev,
++				struct device_node *np_config,
++				struct pinctrl_map **map,
++				unsigned *num_maps)
++{
++	int max_maps = 0;
++	struct pinctrl_map *tmp;
++	struct device_node *np;
++
++	for_each_child_of_node(np_config, np) {
++		int ret = of_property_count_strings(np, "ralink,group");
++
++		if (ret >= 0)
++			max_maps += ret;
++	}
++
++	if (!max_maps)
++		return max_maps;
++
++	*map = kzalloc(max_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
++	if (!*map)
++		return -ENOMEM;
++
++	tmp = *map;
++
++	for_each_child_of_node(np_config, np)
++		rt2880_pinctrl_dt_subnode_to_map(pctrldev, np, &tmp);
++	*num_maps = max_maps;
++
++	return 0;
++}
++
++static const struct pinctrl_ops rt2880_pctrl_ops = {
++	.get_groups_count	= rt2880_get_group_count,
++	.get_group_name		= rt2880_get_group_name,
++	.get_group_pins		= rt2880_get_group_pins,
++	.pin_dbg_show		= rt2880_pinctrl_pin_dbg_show,
++	.dt_node_to_map		= rt2880_pinctrl_dt_node_to_map,
++	.dt_free_map		= rt2880_pinctrl_dt_free_map,
++};
++
++static int rt2880_pmx_func_count(struct pinctrl_dev *pctrldev)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	return p->func_count;
++}
++
++static const char *rt2880_pmx_func_name(struct pinctrl_dev *pctrldev,
++					 unsigned func)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	return p->func[func]->name;
++}
++
++static int rt2880_pmx_group_get_groups(struct pinctrl_dev *pctrldev,
++				unsigned func,
++				const char * const **groups,
++				unsigned * const num_groups)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	if (p->func[func]->group_count == 1)
++		*groups = &p->group_names[p->func[func]->groups[0]];
++	else
++		*groups = p->group_names;
++
++	*num_groups = p->func[func]->group_count;
++
++	return 0;
++}
++
++static int rt2880_pmx_group_enable(struct pinctrl_dev *pctrldev,
++				unsigned func,
++				unsigned group)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++        u32 mode = 0;
++	u32 reg = SYSC_REG_GPIO_MODE;
++	int i;
++	int shift;
++
++	/* dont allow double use */
++	if (p->groups[group].enabled) {
++		dev_err(p->dev, "%s is already enabled\n", p->groups[group].name);
++		return -EBUSY;
++	}
++
++	p->groups[group].enabled = 1;
++	p->func[func]->enabled = 1;
++
++	shift = p->groups[group].shift;
++	if (shift >= 32) {
++		shift -= 32;
++		reg = SYSC_REG_GPIO_MODE2;
++	}
++	mode = rt_sysc_r32(reg);
++	mode &= ~(p->groups[group].mask << shift);
++
++	/* mark the pins as gpio */
++	for (i = 0; i < p->groups[group].func[0].pin_count; i++)
++		p->gpio[p->groups[group].func[0].pins[i]] = 1;
++
++	/* function 0 is gpio and needs special handling */
++	if (func == 0) {
++		mode |= p->groups[group].gpio << shift;
++	} else {
++		for (i = 0; i < p->func[func]->pin_count; i++)
++			p->gpio[p->func[func]->pins[i]] = 0;
++		mode |= p->func[func]->value << shift;
++	}
++	rt_sysc_w32(mode, reg);
++
++	return 0;
++}
++
++static int rt2880_pmx_group_gpio_request_enable(struct pinctrl_dev *pctrldev,
++				struct pinctrl_gpio_range *range,
++				unsigned pin)
++{
++	struct rt2880_priv *p = pinctrl_dev_get_drvdata(pctrldev);
++
++	if (!p->gpio[pin]) {
++		dev_err(p->dev, "pin %d is not set to gpio mux\n", pin);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static const struct pinmux_ops rt2880_pmx_group_ops = {
++	.get_functions_count	= rt2880_pmx_func_count,
++	.get_function_name	= rt2880_pmx_func_name,
++	.get_function_groups	= rt2880_pmx_group_get_groups,
++	.set_mux		= rt2880_pmx_group_enable,
++	.gpio_request_enable	= rt2880_pmx_group_gpio_request_enable,
++};
++
++static struct pinctrl_desc rt2880_pctrl_desc = {
++	.owner		= THIS_MODULE,
++	.name		= "rt2880-pinmux",
++	.pctlops	= &rt2880_pctrl_ops,
++	.pmxops		= &rt2880_pmx_group_ops,
++};
++
++static struct rt2880_pmx_func gpio_func = {
++	.name = "gpio",
++};
++
++static int rt2880_pinmux_index(struct rt2880_priv *p)
++{
++	struct rt2880_pmx_func **f;
++	struct rt2880_pmx_group *mux = p->groups;
++	int i, j, c = 0;
++
++	/* count the mux functions */
++	while (mux->name) {
++		p->group_count++;
++		mux++;
++	}
++
++	/* allocate the group names array needed by the gpio function */
++	p->group_names = devm_kzalloc(p->dev, sizeof(char *) * p->group_count, GFP_KERNEL);
++	if (!p->group_names)
++		return -1;
++
++	for (i = 0; i < p->group_count; i++) {
++		p->group_names[i] = p->groups[i].name;
++		p->func_count += p->groups[i].func_count;
++	}
++
++	/* we have a dummy function[0] for gpio */
++	p->func_count++;
++
++	/* allocate our function and group mapping index buffers */
++	f = p->func = devm_kzalloc(p->dev, sizeof(struct rt2880_pmx_func) * p->func_count, GFP_KERNEL);
++	gpio_func.groups = devm_kzalloc(p->dev, sizeof(int) * p->group_count, GFP_KERNEL);
++	if (!f || !gpio_func.groups)
++		return -1;
++
++	/* add a backpointer to the function so it knows its group */
++	gpio_func.group_count = p->group_count;
++	for (i = 0; i < gpio_func.group_count; i++)
++		gpio_func.groups[i] = i;
++
++	f[c] = &gpio_func;
++	c++;
++
++	/* add remaining functions */
++	for (i = 0; i < p->group_count; i++) {
++		for (j = 0; j < p->groups[i].func_count; j++) {
++			f[c] = &p->groups[i].func[j];
++			f[c]->groups = devm_kzalloc(p->dev, sizeof(int), GFP_KERNEL);
++			f[c]->groups[0] = i;
++			f[c]->group_count = 1;
++			c++;
++		}
++	}
++	return 0;
++}
++
++static int rt2880_pinmux_pins(struct rt2880_priv *p)
++{
++	int i, j;
++
++	/* loop over the functions and initialize the pins array. also work out the highest pin used */
++	for (i = 0; i < p->func_count; i++) {
++		int pin;
++
++		if (!p->func[i]->pin_count)
++			continue;
++
++		p->func[i]->pins = devm_kzalloc(p->dev, sizeof(int) * p->func[i]->pin_count, GFP_KERNEL);
++		for (j = 0; j < p->func[i]->pin_count; j++)
++			p->func[i]->pins[j] = p->func[i]->pin_first + j;
++
++		pin = p->func[i]->pin_first + p->func[i]->pin_count;
++		if (pin > p->max_pins)
++			p->max_pins = pin;
++	}
++
++	/* the buffer that tells us which pins are gpio */
++	p->gpio = devm_kzalloc(p->dev,sizeof(uint8_t) * p->max_pins,
++		GFP_KERNEL);
++	/* the pads needed to tell pinctrl about our pins */
++	p->pads = devm_kzalloc(p->dev,
++		sizeof(struct pinctrl_pin_desc) * p->max_pins,
++		GFP_KERNEL);
++	if (!p->pads || !p->gpio ) {
++		dev_err(p->dev, "Failed to allocate gpio data\n");
++		return -ENOMEM;
++	}
++
++	memset(p->gpio, 1, sizeof(uint8_t) * p->max_pins);
++	for (i = 0; i < p->func_count; i++) {
++		if (!p->func[i]->pin_count)
++			continue;
++
++		for (j = 0; j < p->func[i]->pin_count; j++)
++			p->gpio[p->func[i]->pins[j]] = 0;
++	}
++
++	/* pin 0 is always a gpio */
++	p->gpio[0] = 1;
++
++	/* set the pads */
++	for (i = 0; i < p->max_pins; i++) {
++		/* strlen("ioXY") + 1 = 5 */
++		char *name = devm_kzalloc(p->dev, 5, GFP_KERNEL);
++
++		if (!name) {
++			dev_err(p->dev, "Failed to allocate pad name\n");
++			return -ENOMEM;
++		}
++		snprintf(name, 5, "io%d", i);
++		p->pads[i].number = i;
++		p->pads[i].name = name;
++	}
++	p->desc->pins = p->pads;
++	p->desc->npins = p->max_pins;
++
++	return 0;
++}
++
++static int rt2880_pinmux_probe(struct platform_device *pdev)
++{
++	struct rt2880_priv *p;
++	struct pinctrl_dev *dev;
++	struct device_node *np;
++
++	if (!rt2880_pinmux_data)
++		return -ENOSYS;
++
++	/* setup the private data */
++	p = devm_kzalloc(&pdev->dev, sizeof(struct rt2880_priv), GFP_KERNEL);
++	if (!p)
++		return -ENOMEM;
++
++	p->dev = &pdev->dev;
++	p->desc = &rt2880_pctrl_desc;
++	p->groups = rt2880_pinmux_data;
++	platform_set_drvdata(pdev, p);
++
++	/* init the device */
++	if (rt2880_pinmux_index(p)) {
++		dev_err(&pdev->dev, "failed to load index\n");
++		return -EINVAL;
++	}
++	if (rt2880_pinmux_pins(p)) {
++		dev_err(&pdev->dev, "failed to load pins\n");
++		return -EINVAL;
++	}
++	dev = pinctrl_register(p->desc, &pdev->dev, p);
++	if (IS_ERR(dev))
++		return PTR_ERR(dev);
++
++	/* finalize by adding gpio ranges for enables gpio controllers */
++	for_each_compatible_node(np, NULL, "ralink,rt2880-gpio") {
++		const __be32 *ngpio, *gpiobase;
++		struct pinctrl_gpio_range *range;
++		char *name;
++
++		if (!of_device_is_available(np))
++			continue;
++
++		ngpio = of_get_property(np, "ralink,num-gpios", NULL);
++		gpiobase = of_get_property(np, "ralink,gpio-base", NULL);
++		if (!ngpio || !gpiobase) {
++			dev_err(&pdev->dev, "failed to load chip info\n");
++			return -EINVAL;
++		}
++
++		range = devm_kzalloc(p->dev, sizeof(struct pinctrl_gpio_range) + 4, GFP_KERNEL);
++		range->name = name = (char *) &range[1];
++		sprintf(name, "pio");
++		range->npins = __be32_to_cpu(*ngpio);
++		range->base = __be32_to_cpu(*gpiobase);
++		range->pin_base = range->base;
++		pinctrl_add_gpio_range(dev, range);
++	}
++
++	return 0;
++}
++
++static const struct of_device_id rt2880_pinmux_match[] = {
++	{ .compatible = "ralink,rt2880-pinmux" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, rt2880_pinmux_match);
++
++static struct platform_driver rt2880_pinmux_driver = {
++	.probe = rt2880_pinmux_probe,
++	.driver = {
++		.name = "rt2880-pinmux",
++		.owner = THIS_MODULE,
++		.of_match_table = rt2880_pinmux_match,
++	},
++};
++
++int __init rt2880_pinmux_init(void)
++{
++	return platform_driver_register(&rt2880_pinmux_driver);
++}
++
++core_initcall_sync(rt2880_pinmux_init);

target/linux/ramips/patches-4.4/0026-DT-Add-documentation-for-gpio-ralink.patch

@@ -0,0 +1,59 @@
+From d410e5478c622c01fcf31427533df5f433df9146 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 28 Jul 2013 19:45:30 +0200
+Subject: [PATCH 26/53] DT: Add documentation for gpio-ralink
+
+Describe gpio-ralink binding.
+
+Signed-off-by: John Crispin <[email protected]>
+Cc: [email protected]
+Cc: [email protected]
+Cc: [email protected]
+---
+ .../devicetree/bindings/gpio/gpio-ralink.txt       |   40 ++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/gpio/gpio-ralink.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/gpio/gpio-ralink.txt
+@@ -0,0 +1,40 @@
++Ralink SoC GPIO controller bindings
++
++Required properties:
++- compatible:
++  - "ralink,rt2880-gpio" for Ralink controllers
++- #gpio-cells : Should be two.
++  - first cell is the pin number
++  - second cell is used to specify optional parameters (unused)
++- gpio-controller : Marks the device node as a GPIO controller
++- reg : Physical base address and length of the controller's registers
++- interrupt-parent: phandle to the INTC device node
++- interrupts : Specify the INTC interrupt number
++- ralink,num-gpios : Specify the number of GPIOs
++- ralink,register-map : The register layout depends on the GPIO bank and actual
++		SoC type. Register offsets need to be in this order.
++		[ INT, EDGE, RENA, FENA, DATA, DIR, POL, SET, RESET, TOGGLE ]
++
++Optional properties:
++- ralink,gpio-base : Specify the GPIO chips base number
++
++Example:
++
++	gpio0: gpio@600 {
++		compatible = "ralink,rt5350-gpio", "ralink,rt2880-gpio";
++
++		#gpio-cells = <2>;
++		gpio-controller;
++
++		reg = <0x600 0x34>;
++
++		interrupt-parent = <&intc>;
++		interrupts = <6>;
++
++		ralink,gpio-base = <0>;
++		ralink,num-gpios = <24>;
++		ralink,register-map = [ 00 04 08 0c
++				20 24 28 2c
++				30 34 ];
++
++	};

target/linux/ramips/patches-4.4/0027-GPIO-MIPS-ralink-add-gpio-driver-for-ralink-SoC.patch

@@ -0,0 +1,430 @@
+From 69fdd2c4f937796b934e89c33acde9d082e27bfd Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 4 Aug 2014 20:36:29 +0200
+Subject: [PATCH 27/53] GPIO: MIPS: ralink: add gpio driver for ralink SoC
+
+Add gpio driver for Ralink SoC. This driver makes the gpio core on
+RT2880, RT305x, rt3352, rt3662, rt3883, rt5350 and mt7620 work.
+
+Signed-off-by: John Crispin <[email protected]>
+Cc: [email protected]
+Cc: [email protected]
+---
+ arch/mips/include/asm/mach-ralink/gpio.h |   24 ++
+ drivers/gpio/Kconfig                     |    6 +
+ drivers/gpio/Makefile                    |    1 +
+ drivers/gpio/gpio-ralink.c               |  355 ++++++++++++++++++++++++++++++
+ 4 files changed, 386 insertions(+)
+ create mode 100644 arch/mips/include/asm/mach-ralink/gpio.h
+ create mode 100644 drivers/gpio/gpio-ralink.c
+
+--- /dev/null
++++ b/arch/mips/include/asm/mach-ralink/gpio.h
+@@ -0,0 +1,24 @@
++/*
++ *  Ralink SoC GPIO API support
++ *
++ *  Copyright (C) 2008-2009 Gabor Juhos <[email protected]>
++ *  Copyright (C) 2008 Imre Kaloz <[email protected]>
++ *
++ *  This program is free software; you can redistribute it and/or modify it
++ *  under the terms of the GNU General Public License version 2 as published
++ *  by the Free Software Foundation.
++ *
++ */
++
++#ifndef __ASM_MACH_RALINK_GPIO_H
++#define __ASM_MACH_RALINK_GPIO_H
++
++#define ARCH_NR_GPIOS	128
++#include <asm-generic/gpio.h>
++
++#define gpio_get_value	__gpio_get_value
++#define gpio_set_value	__gpio_set_value
++#define gpio_cansleep	__gpio_cansleep
++#define gpio_to_irq	__gpio_to_irq
++
++#endif /* __ASM_MACH_RALINK_GPIO_H */
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -351,6 +351,12 @@ config GPIO_SAMSUNG
+ 	  Legacy GPIO support. Use only for platforms without support for
+ 	  pinctrl.
+ 
++config GPIO_RALINK
++	bool "Ralink GPIO Support"
++	depends on RALINK
++	help
++	  Say yes here to support the Ralink SoC GPIO device
++
+ config GPIO_SPEAR_SPICS
+ 	bool "ST SPEAr13xx SPI Chip Select as GPIO support"
+ 	depends on PLAT_SPEAR
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -76,6 +76,7 @@ obj-$(CONFIG_GPIO_PCF857X)	+= gpio-pcf85
+ obj-$(CONFIG_GPIO_PCH)		+= gpio-pch.o
+ obj-$(CONFIG_GPIO_PL061)	+= gpio-pl061.o
+ obj-$(CONFIG_GPIO_PXA)		+= gpio-pxa.o
++obj-$(CONFIG_GPIO_RALINK)	+= gpio-ralink.o
+ obj-$(CONFIG_GPIO_RC5T583)	+= gpio-rc5t583.o
+ obj-$(CONFIG_GPIO_RDC321X)	+= gpio-rdc321x.o
+ obj-$(CONFIG_GPIO_RCAR)		+= gpio-rcar.o
+--- /dev/null
++++ b/drivers/gpio/gpio-ralink.c
+@@ -0,0 +1,355 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Copyright (C) 2009-2011 Gabor Juhos <[email protected]>
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/io.h>
++#include <linux/gpio.h>
++#include <linux/spinlock.h>
++#include <linux/platform_device.h>
++#include <linux/of_irq.h>
++#include <linux/irqdomain.h>
++#include <linux/interrupt.h>
++
++enum ralink_gpio_reg {
++	GPIO_REG_INT = 0,
++	GPIO_REG_EDGE,
++	GPIO_REG_RENA,
++	GPIO_REG_FENA,
++	GPIO_REG_DATA,
++	GPIO_REG_DIR,
++	GPIO_REG_POL,
++	GPIO_REG_SET,
++	GPIO_REG_RESET,
++	GPIO_REG_TOGGLE,
++	GPIO_REG_MAX
++};
++
++struct ralink_gpio_chip {
++	struct gpio_chip chip;
++	u8 regs[GPIO_REG_MAX];
++
++	spinlock_t lock;
++	void __iomem *membase;
++	struct irq_domain *domain;
++	int irq;
++
++	u32 rising;
++	u32 falling;
++};
++
++#define MAP_MAX	4
++static struct irq_domain *irq_map[MAP_MAX];
++static int irq_map_count;
++static atomic_t irq_refcount = ATOMIC_INIT(0);
++
++static inline struct ralink_gpio_chip *to_ralink_gpio(struct gpio_chip *chip)
++{
++	struct ralink_gpio_chip *rg;
++
++	rg = container_of(chip, struct ralink_gpio_chip, chip);
++
++	return rg;
++}
++
++static inline void rt_gpio_w32(struct ralink_gpio_chip *rg, u8 reg, u32 val)
++{
++	iowrite32(val, rg->membase + rg->regs[reg]);
++}
++
++static inline u32 rt_gpio_r32(struct ralink_gpio_chip *rg, u8 reg)
++{
++	return ioread32(rg->membase + rg->regs[reg]);
++}
++
++static void ralink_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
++{
++	struct ralink_gpio_chip *rg = to_ralink_gpio(chip);
++
++	rt_gpio_w32(rg, (value) ? GPIO_REG_SET : GPIO_REG_RESET, BIT(offset));
++}
++
++static int ralink_gpio_get(struct gpio_chip *chip, unsigned offset)
++{
++	struct ralink_gpio_chip *rg = to_ralink_gpio(chip);
++
++	return !!(rt_gpio_r32(rg, GPIO_REG_DATA) & BIT(offset));
++}
++
++static int ralink_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
++{
++	struct ralink_gpio_chip *rg = to_ralink_gpio(chip);
++	unsigned long flags;
++	u32 t;
++
++	spin_lock_irqsave(&rg->lock, flags);
++	t = rt_gpio_r32(rg, GPIO_REG_DIR);
++	t &= ~BIT(offset);
++	rt_gpio_w32(rg, GPIO_REG_DIR, t);
++	spin_unlock_irqrestore(&rg->lock, flags);
++
++	return 0;
++}
++
++static int ralink_gpio_direction_output(struct gpio_chip *chip,
++					unsigned offset, int value)
++{
++	struct ralink_gpio_chip *rg = to_ralink_gpio(chip);
++	unsigned long flags;
++	u32 t;
++
++	spin_lock_irqsave(&rg->lock, flags);
++	ralink_gpio_set(chip, offset, value);
++	t = rt_gpio_r32(rg, GPIO_REG_DIR);
++	t |= BIT(offset);
++	rt_gpio_w32(rg, GPIO_REG_DIR, t);
++	spin_unlock_irqrestore(&rg->lock, flags);
++
++	return 0;
++}
++
++static int ralink_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
++{
++	struct ralink_gpio_chip *rg = to_ralink_gpio(chip);
++
++	if (rg->irq < 1)
++		return -1;
++
++	return irq_create_mapping(rg->domain, pin);
++}
++
++static void ralink_gpio_irq_handler(struct irq_desc *desc)
++{
++	int i;
++
++	for (i = 0; i < irq_map_count; i++) {
++		struct irq_domain *domain = irq_map[i];
++		struct ralink_gpio_chip *rg;
++		unsigned long pending;
++		int bit;
++
++		rg = (struct ralink_gpio_chip *) domain->host_data;
++		pending = rt_gpio_r32(rg, GPIO_REG_INT);
++
++		for_each_set_bit(bit, &pending, rg->chip.ngpio) {
++			u32 map = irq_find_mapping(domain, bit);
++			generic_handle_irq(map);
++			rt_gpio_w32(rg, GPIO_REG_INT, BIT(bit));
++		}
++	}
++}
++
++static void ralink_gpio_irq_unmask(struct irq_data *d)
++{
++	struct ralink_gpio_chip *rg;
++	unsigned long flags;
++	u32 rise, fall;
++
++	rg = (struct ralink_gpio_chip *) d->domain->host_data;
++	rise = rt_gpio_r32(rg, GPIO_REG_RENA);
++	fall = rt_gpio_r32(rg, GPIO_REG_FENA);
++
++	spin_lock_irqsave(&rg->lock, flags);
++	rt_gpio_w32(rg, GPIO_REG_RENA, rise | (BIT(d->hwirq) & rg->rising));
++	rt_gpio_w32(rg, GPIO_REG_FENA, fall | (BIT(d->hwirq) & rg->falling));
++	spin_unlock_irqrestore(&rg->lock, flags);
++}
++
++static void ralink_gpio_irq_mask(struct irq_data *d)
++{
++	struct ralink_gpio_chip *rg;
++	unsigned long flags;
++	u32 rise, fall;
++
++	rg = (struct ralink_gpio_chip *) d->domain->host_data;
++	rise = rt_gpio_r32(rg, GPIO_REG_RENA);
++	fall = rt_gpio_r32(rg, GPIO_REG_FENA);
++
++	spin_lock_irqsave(&rg->lock, flags);
++	rt_gpio_w32(rg, GPIO_REG_FENA, fall & ~BIT(d->hwirq));
++	rt_gpio_w32(rg, GPIO_REG_RENA, rise & ~BIT(d->hwirq));
++	spin_unlock_irqrestore(&rg->lock, flags);
++}
++
++static int ralink_gpio_irq_type(struct irq_data *d, unsigned int type)
++{
++	struct ralink_gpio_chip *rg;
++	u32 mask = BIT(d->hwirq);
++
++	rg = (struct ralink_gpio_chip *) d->domain->host_data;
++
++	if (type == IRQ_TYPE_PROBE) {
++		if ((rg->rising | rg->falling) & mask)
++			return 0;
++
++		type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
++	}
++
++	if (type & IRQ_TYPE_EDGE_RISING)
++		rg->rising |= mask;
++	else
++		rg->rising &= ~mask;
++
++	if (type & IRQ_TYPE_EDGE_FALLING)
++		rg->falling |= mask;
++	else
++		rg->falling &= ~mask;
++
++	return 0;
++}
++
++static struct irq_chip ralink_gpio_irq_chip = {
++	.name		= "GPIO",
++	.irq_unmask	= ralink_gpio_irq_unmask,
++	.irq_mask	= ralink_gpio_irq_mask,
++	.irq_mask_ack	= ralink_gpio_irq_mask,
++	.irq_set_type	= ralink_gpio_irq_type,
++};
++
++static int gpio_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
++{
++	irq_set_chip_and_handler(irq, &ralink_gpio_irq_chip, handle_level_irq);
++	irq_set_handler_data(irq, d);
++
++	return 0;
++}
++
++static const struct irq_domain_ops irq_domain_ops = {
++	.xlate = irq_domain_xlate_onecell,
++	.map = gpio_map,
++};
++
++static void ralink_gpio_irq_init(struct device_node *np,
++				 struct ralink_gpio_chip *rg)
++{
++	if (irq_map_count >= MAP_MAX)
++		return;
++
++	rg->irq = irq_of_parse_and_map(np, 0);
++	if (!rg->irq)
++		return;
++
++	rg->domain = irq_domain_add_linear(np, rg->chip.ngpio,
++					   &irq_domain_ops, rg);
++	if (!rg->domain) {
++		dev_err(rg->chip.dev, "irq_domain_add_linear failed\n");
++		return;
++	}
++
++	irq_map[irq_map_count++] = rg->domain;
++
++	rt_gpio_w32(rg, GPIO_REG_RENA, 0x0);
++	rt_gpio_w32(rg, GPIO_REG_FENA, 0x0);
++
++	if (!atomic_read(&irq_refcount))
++		irq_set_chained_handler(rg->irq, ralink_gpio_irq_handler);
++	atomic_inc(&irq_refcount);
++
++	dev_info(rg->chip.dev, "registering %d irq handlers\n", rg->chip.ngpio);
++}
++
++static int ralink_gpio_request(struct gpio_chip *chip, unsigned offset)
++{
++	int gpio = chip->base + offset;
++
++	return pinctrl_request_gpio(gpio);
++}
++
++static void ralink_gpio_free(struct gpio_chip *chip, unsigned offset)
++{
++	int gpio = chip->base + offset;
++
++	pinctrl_free_gpio(gpio);
++}
++
++static int ralink_gpio_probe(struct platform_device *pdev)
++{
++	struct device_node *np = pdev->dev.of_node;
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	struct ralink_gpio_chip *rg;
++	const __be32 *ngpio, *gpiobase;
++
++	if (!res) {
++		dev_err(&pdev->dev, "failed to find resource\n");
++		return -ENOMEM;
++	}
++
++	rg = devm_kzalloc(&pdev->dev,
++			sizeof(struct ralink_gpio_chip), GFP_KERNEL);
++	if (!rg)
++		return -ENOMEM;
++
++	rg->membase = devm_ioremap_resource(&pdev->dev, res);
++	if (!rg->membase) {
++		dev_err(&pdev->dev, "cannot remap I/O memory region\n");
++		return -ENOMEM;
++	}
++
++	if (of_property_read_u8_array(np, "ralink,register-map",
++			rg->regs, GPIO_REG_MAX)) {
++		dev_err(&pdev->dev, "failed to read register definition\n");
++		return -EINVAL;
++	}
++
++	ngpio = of_get_property(np, "ralink,num-gpios", NULL);
++	if (!ngpio) {
++		dev_err(&pdev->dev, "failed to read number of pins\n");
++		return -EINVAL;
++	}
++
++	gpiobase = of_get_property(np, "ralink,gpio-base", NULL);
++	if (gpiobase)
++		rg->chip.base = be32_to_cpu(*gpiobase);
++	else
++		rg->chip.base = -1;
++
++	spin_lock_init(&rg->lock);
++
++	rg->chip.dev = &pdev->dev;
++	rg->chip.label = dev_name(&pdev->dev);
++	rg->chip.of_node = np;
++	rg->chip.ngpio = be32_to_cpu(*ngpio);
++	rg->chip.direction_input = ralink_gpio_direction_input;
++	rg->chip.direction_output = ralink_gpio_direction_output;
++	rg->chip.get = ralink_gpio_get;
++	rg->chip.set = ralink_gpio_set;
++	rg->chip.request = ralink_gpio_request;
++	rg->chip.to_irq = ralink_gpio_to_irq;
++	rg->chip.free = ralink_gpio_free;
++
++	/* set polarity to low for all lines */
++	rt_gpio_w32(rg, GPIO_REG_POL, 0);
++
++	dev_info(&pdev->dev, "registering %d gpios\n", rg->chip.ngpio);
++
++	ralink_gpio_irq_init(np, rg);
++
++	return gpiochip_add(&rg->chip);
++}
++
++static const struct of_device_id ralink_gpio_match[] = {
++	{ .compatible = "ralink,rt2880-gpio" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, ralink_gpio_match);
++
++static struct platform_driver ralink_gpio_driver = {
++	.probe = ralink_gpio_probe,
++	.driver = {
++		.name = "rt2880_gpio",
++		.owner = THIS_MODULE,
++		.of_match_table = ralink_gpio_match,
++	},
++};
++
++static int __init ralink_gpio_init(void)
++{
++	return platform_driver_register(&ralink_gpio_driver);
++}
++
++subsys_initcall(ralink_gpio_init);

target/linux/ramips/patches-4.4/0028-GPIO-ralink-add-mt7621-gpio-controller.patch

@@ -0,0 +1,405 @@
+From 61ac7d9b4228de8c332900902c2b93189b042eab Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 11:00:32 +0100
+Subject: [PATCH 28/53] GPIO: ralink: add mt7621 gpio controller
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/Kconfig          |    3 +
+ drivers/gpio/Kconfig       |    6 +
+ drivers/gpio/Makefile      |    1 +
+ drivers/gpio/gpio-mt7621.c |  354 ++++++++++++++++++++++++++++++++++++++++++++
+ 4 files changed, 364 insertions(+)
+ create mode 100644 drivers/gpio/gpio-mt7621.c
+
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -587,6 +587,9 @@ config RALINK
+ 	select RESET_CONTROLLER
+ 	select PINCTRL
+ 	select PINCTRL_RT2880
++	select ARCH_HAS_RESET_CONTROLLER
++	select RESET_CONTROLLER
++	select ARCH_REQUIRE_GPIOLIB
+ 
+ config SGI_IP22
+ 	bool "SGI IP22 (Indy/Indigo2)"
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -260,6 +260,12 @@ config GPIO_MB86S7X
+ 	help
+ 	  Say yes here to support the GPIO controller in Fujitsu MB86S70 SoCs.
+ 
++config GPIO_MT7621
++	bool "Mediatek GPIO Support"
++	depends on SOC_MT7620 || SOC_MT7621
++	help
++	  Say yes here to support the Mediatek SoC GPIO device
++
+ config GPIO_MM_LANTIQ
+ 	bool "Lantiq Memory mapped GPIOs"
+ 	depends on LANTIQ && SOC_XWAY
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -120,3 +120,4 @@ obj-$(CONFIG_GPIO_XTENSA)	+= gpio-xtensa
+ obj-$(CONFIG_GPIO_ZEVIO)	+= gpio-zevio.o
+ obj-$(CONFIG_GPIO_ZYNQ)		+= gpio-zynq.o
+ obj-$(CONFIG_GPIO_ZX)		+= gpio-zx.o
++obj-$(CONFIG_GPIO_MT7621)	+= gpio-mt7621.o
+--- /dev/null
++++ b/drivers/gpio/gpio-mt7621.c
+@@ -0,0 +1,354 @@
++/*
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ *
++ * Copyright (C) 2009-2011 Gabor Juhos <[email protected]>
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#include <linux/io.h>
++#include <linux/err.h>
++#include <linux/gpio.h>
++#include <linux/module.h>
++#include <linux/of_irq.h>
++#include <linux/spinlock.h>
++#include <linux/irqdomain.h>
++#include <linux/interrupt.h>
++#include <linux/platform_device.h>
++
++#define MTK_MAX_BANK		3
++#define MTK_BANK_WIDTH		32
++
++enum mediatek_gpio_reg {
++	GPIO_REG_CTRL = 0,
++	GPIO_REG_POL,
++	GPIO_REG_DATA,
++	GPIO_REG_DSET,
++	GPIO_REG_DCLR,
++	GPIO_REG_REDGE,
++	GPIO_REG_FEDGE,
++	GPIO_REG_HLVL,
++	GPIO_REG_LLVL,
++	GPIO_REG_STAT,
++	GPIO_REG_EDGE,
++};
++
++static void __iomem *mediatek_gpio_membase;
++static int mediatek_gpio_irq;
++static struct irq_domain *mediatek_gpio_irq_domain;
++static atomic_t irq_refcount = ATOMIC_INIT(0);
++
++struct mtk_gc {
++	struct gpio_chip chip;
++	spinlock_t lock;
++	int bank;
++	u32 rising;
++	u32 falling;
++} *gc_map[MTK_MAX_BANK];
++
++static inline struct mtk_gc
++*to_mediatek_gpio(struct gpio_chip *chip)
++{
++	struct mtk_gc *mgc;
++
++	mgc = container_of(chip, struct mtk_gc, chip);
++
++	return mgc;
++}
++
++static inline void
++mtk_gpio_w32(struct mtk_gc *rg, u8 reg, u32 val)
++{
++	iowrite32(val, mediatek_gpio_membase + (reg * 0x10) + (rg->bank * 0x4));
++}
++
++static inline u32
++mtk_gpio_r32(struct mtk_gc *rg, u8 reg)
++{
++	return ioread32(mediatek_gpio_membase + (reg * 0x10) + (rg->bank * 0x4));
++}
++
++static void
++mediatek_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++
++	mtk_gpio_w32(rg, (value) ? GPIO_REG_DSET : GPIO_REG_DCLR, BIT(offset));
++}
++
++static int
++mediatek_gpio_get(struct gpio_chip *chip, unsigned offset)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++
++	return !!(mtk_gpio_r32(rg, GPIO_REG_DATA) & BIT(offset));
++}
++
++static int
++mediatek_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++	unsigned long flags;
++	u32 t;
++
++	spin_lock_irqsave(&rg->lock, flags);
++	t = mtk_gpio_r32(rg, GPIO_REG_CTRL);
++	t &= ~BIT(offset);
++	mtk_gpio_w32(rg, GPIO_REG_CTRL, t);
++	spin_unlock_irqrestore(&rg->lock, flags);
++
++	return 0;
++}
++
++static int
++mediatek_gpio_direction_output(struct gpio_chip *chip,
++					unsigned offset, int value)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++	unsigned long flags;
++	u32 t;
++
++	spin_lock_irqsave(&rg->lock, flags);
++	t = mtk_gpio_r32(rg, GPIO_REG_CTRL);
++	t |= BIT(offset);
++	mtk_gpio_w32(rg, GPIO_REG_CTRL, t);
++	mediatek_gpio_set(chip, offset, value);
++	spin_unlock_irqrestore(&rg->lock, flags);
++
++	return 0;
++}
++
++static int
++mediatek_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++	unsigned long flags;
++	u32 t;
++
++	spin_lock_irqsave(&rg->lock, flags);
++	t = mtk_gpio_r32(rg, GPIO_REG_CTRL);
++	spin_unlock_irqrestore(&rg->lock, flags);
++
++	if (t & BIT(offset))
++		return 0;
++
++	return 1;
++}
++
++static int
++mediatek_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
++{
++	struct mtk_gc *rg = to_mediatek_gpio(chip);
++
++	return irq_create_mapping(mediatek_gpio_irq_domain, pin + (rg->bank * MTK_BANK_WIDTH));
++}
++
++static int
++mediatek_gpio_bank_probe(struct platform_device *pdev, struct device_node *bank)
++{
++	const __be32 *id = of_get_property(bank, "reg", NULL);
++	struct mtk_gc *rg = devm_kzalloc(&pdev->dev,
++				sizeof(struct mtk_gc), GFP_KERNEL);
++
++	if (!rg || !id || be32_to_cpu(*id) > MTK_MAX_BANK)
++		return -ENOMEM;
++
++	gc_map[be32_to_cpu(*id)] = rg;
++
++	memset(rg, 0, sizeof(struct mtk_gc));
++
++	spin_lock_init(&rg->lock);
++
++	rg->chip.dev = &pdev->dev;
++	rg->chip.label = dev_name(&pdev->dev);
++	rg->chip.of_node = bank;
++	rg->chip.base = MTK_BANK_WIDTH * be32_to_cpu(*id);
++	rg->chip.ngpio = MTK_BANK_WIDTH;
++	rg->chip.direction_input = mediatek_gpio_direction_input;
++	rg->chip.direction_output = mediatek_gpio_direction_output;
++	rg->chip.get_direction = mediatek_gpio_get_direction;
++	rg->chip.get = mediatek_gpio_get;
++	rg->chip.set = mediatek_gpio_set;
++	if (mediatek_gpio_irq_domain)
++		rg->chip.to_irq = mediatek_gpio_to_irq;
++	rg->bank = be32_to_cpu(*id);
++
++	/* set polarity to low for all gpios */
++	mtk_gpio_w32(rg, GPIO_REG_POL, 0);
++
++	dev_info(&pdev->dev, "registering %d gpios\n", rg->chip.ngpio);
++
++	return gpiochip_add(&rg->chip);
++}
++
++static void
++mediatek_gpio_irq_handler(struct irq_desc *desc)
++{
++	int i;
++
++	for (i = 0; i < MTK_MAX_BANK; i++) {
++		struct mtk_gc *rg = gc_map[i];
++		unsigned long pending;
++		int bit;
++
++		if (!rg)
++			continue;
++
++		pending = mtk_gpio_r32(rg, GPIO_REG_STAT);
++
++		for_each_set_bit(bit, &pending, MTK_BANK_WIDTH) {
++			u32 map = irq_find_mapping(mediatek_gpio_irq_domain, (MTK_BANK_WIDTH * i) + bit);
++
++			generic_handle_irq(map);
++			mtk_gpio_w32(rg, GPIO_REG_STAT, BIT(bit));
++		}
++	}
++}
++
++static void
++mediatek_gpio_irq_unmask(struct irq_data *d)
++{
++	int pin = d->hwirq;
++	int bank = pin / 32;
++	struct mtk_gc *rg = gc_map[bank];
++	unsigned long flags;
++	u32 rise, fall;
++
++	if (!rg)
++		return;
++
++	rise = mtk_gpio_r32(rg, GPIO_REG_REDGE);
++	fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE);
++
++	spin_lock_irqsave(&rg->lock, flags);
++	mtk_gpio_w32(rg, GPIO_REG_REDGE, rise | (BIT(d->hwirq) & rg->rising));
++	mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall | (BIT(d->hwirq) & rg->falling));
++	spin_unlock_irqrestore(&rg->lock, flags);
++}
++
++static void
++mediatek_gpio_irq_mask(struct irq_data *d)
++{
++	int pin = d->hwirq;
++	int bank = pin / 32;
++	struct mtk_gc *rg = gc_map[bank];
++	unsigned long flags;
++	u32 rise, fall;
++
++	if (!rg)
++		return;
++
++	rise = mtk_gpio_r32(rg, GPIO_REG_REDGE);
++	fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE);
++
++	spin_lock_irqsave(&rg->lock, flags);
++	mtk_gpio_w32(rg, GPIO_REG_FEDGE, fall & ~BIT(d->hwirq));
++	mtk_gpio_w32(rg, GPIO_REG_REDGE, rise & ~BIT(d->hwirq));
++	spin_unlock_irqrestore(&rg->lock, flags);
++}
++
++static int
++mediatek_gpio_irq_type(struct irq_data *d, unsigned int type)
++{
++	int pin = d->hwirq;
++	int bank = pin / 32;
++	struct mtk_gc *rg = gc_map[bank];
++	u32 mask = BIT(d->hwirq);
++
++	if (!rg)
++		return -1;
++
++	if (type == IRQ_TYPE_PROBE) {
++		if ((rg->rising | rg->falling) & mask)
++			return 0;
++
++		type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING;
++	}
++
++	if (type & IRQ_TYPE_EDGE_RISING)
++		rg->rising |= mask;
++	else
++		rg->rising &= ~mask;
++
++	if (type & IRQ_TYPE_EDGE_FALLING)
++		rg->falling |= mask;
++	else
++		rg->falling &= ~mask;
++
++	return 0;
++}
++
++static struct irq_chip mediatek_gpio_irq_chip = {
++	.name		= "GPIO",
++	.irq_unmask	= mediatek_gpio_irq_unmask,
++	.irq_mask	= mediatek_gpio_irq_mask,
++	.irq_mask_ack	= mediatek_gpio_irq_mask,
++	.irq_set_type	= mediatek_gpio_irq_type,
++};
++
++static int
++mediatek_gpio_gpio_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
++{
++	irq_set_chip_and_handler(irq, &mediatek_gpio_irq_chip, handle_level_irq);
++	irq_set_handler_data(irq, d);
++
++	return 0;
++}
++
++static const struct irq_domain_ops irq_domain_ops = {
++	.xlate = irq_domain_xlate_onecell,
++	.map = mediatek_gpio_gpio_map,
++};
++
++static int
++mediatek_gpio_probe(struct platform_device *pdev)
++{
++	struct device_node *bank, *np = pdev->dev.of_node;
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++	mediatek_gpio_membase = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(mediatek_gpio_membase))
++		return PTR_ERR(mediatek_gpio_membase);
++
++	mediatek_gpio_irq = irq_of_parse_and_map(np, 0);
++	if (mediatek_gpio_irq) {
++		mediatek_gpio_irq_domain = irq_domain_add_linear(np,
++			MTK_MAX_BANK * MTK_BANK_WIDTH,
++			&irq_domain_ops, NULL);
++		if (!mediatek_gpio_irq_domain)
++			dev_err(&pdev->dev, "irq_domain_add_linear failed\n");
++	}
++
++	for_each_child_of_node(np, bank)
++		if (of_device_is_compatible(bank, "mtk,mt7621-gpio-bank"))
++			mediatek_gpio_bank_probe(pdev, bank);
++
++	if (mediatek_gpio_irq_domain)
++		irq_set_chained_handler(mediatek_gpio_irq, mediatek_gpio_irq_handler);
++
++	return 0;
++}
++
++static const struct of_device_id mediatek_gpio_match[] = {
++	{ .compatible = "mtk,mt7621-gpio" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mediatek_gpio_match);
++
++static struct platform_driver mediatek_gpio_driver = {
++	.probe = mediatek_gpio_probe,
++	.driver = {
++		.name = "mt7621_gpio",
++		.owner = THIS_MODULE,
++		.of_match_table = mediatek_gpio_match,
++	},
++};
++
++static int __init
++mediatek_gpio_init(void)
++{
++	return platform_driver_register(&mediatek_gpio_driver);
++}
++
++subsys_initcall(mediatek_gpio_init);

target/linux/ramips/patches-4.4/0029-phy-usb-add-ralink-phy.patch

@@ -0,0 +1,293 @@
+From b00b5eafa7e8d059bd0ce844e66f648916953270 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 3 Jan 2016 19:11:22 +0100
+Subject: [PATCH 2/3] phy: ralink-usb: add driver for Mediatek/Ralink
+
+Add a driver to setup the USB phy on Mediatek/Ralink SoCs.
+The driver is trivial and only sets up power and host mode.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ .../devicetree/bindings/phy/ralink-usb-phy.txt     |   17 ++
+ drivers/phy/Kconfig                                |    8 +
+ drivers/phy/Makefile                               |    1 +
+ drivers/phy/phy-ralink-usb.c                       |  171 ++++++++++++++++++++
+ 4 files changed, 197 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/phy/ralink-usb-phy.txt
+ create mode 100644 drivers/phy/phy-ralink-usb.c
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/phy/ralink-usb-phy.txt
+@@ -0,0 +1,17 @@
++Mediatek/Ralink USB PHY
++
++Required properties:
++ - compatible: ralink,rt3352-usbphy or mediatek,mt7620-usbphy
++ - #phy-cells: should be 0
++ - resets: the two reset controllers for host and device
++ - reset-names: the names of the 2 reset controllers
++
++Example:
++
++usbphy: phy {
++	compatible = "mediatek,mt7620-usbphy";
++	#phy-cells = <0>;
++
++	resets = <&rstctrl 22 &rstctrl 25>;
++	reset-names = "host", "device";
++};
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -341,6 +341,14 @@ config PHY_XGENE
+ 	help
+ 	  This option enables support for APM X-Gene SoC multi-purpose PHY.
+ 
++config PHY_RALINK_USB
++	tristate "Ralink USB PHY driver"
++	select GENERIC_PHY
++	depends on RALINK
++	help
++	  This option enables support for the Ralink USB PHY found inside
++	  RT3352 and MT7620.
++
+ config PHY_STIH407_USB
+ 	tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family"
+ 	depends on RESET_CONTROLLER
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -48,3 +48,4 @@ obj-$(CONFIG_PHY_TUSB1210)		+= phy-tusb1
+ obj-$(CONFIG_PHY_BRCMSTB_SATA)		+= phy-brcmstb-sata.o
+ obj-$(CONFIG_PHY_PISTACHIO_USB)		+= phy-pistachio-usb.o
+ obj-$(CONFIG_PHY_CYGNUS_PCIE)		+= phy-bcm-cygnus-pcie.o
++obj-$(CONFIG_PHY_RALINK_USB)		+= phy-ralink-usb.o
+--- /dev/null
++++ b/drivers/phy/phy-ralink-usb.c
+@@ -0,0 +1,228 @@
++/*
++ * Allwinner ralink USB phy driver
++ *
++ * Copyright (C) 2016 John Crispin <[email protected]>
++ *
++ * Based on code from
++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License as published by
++ * the Free Software Foundation; either version 2 of the License, or
++ * (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/reset.h>
++#include <linux/of_platform.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define RT_SYSC_REG_SYSCFG1		0x014
++#define RT_SYSC_REG_CLKCFG1		0x030
++#define RT_SYSC_REG_USB_PHY_CFG		0x05c
++
++#define OFS_U2_PHY_AC0                  0x00
++#define OFS_U2_PHY_AC1                  0x04
++#define OFS_U2_PHY_AC2                  0x08
++#define OFS_U2_PHY_ACR0                 0x10
++#define OFS_U2_PHY_ACR1                 0x14
++#define OFS_U2_PHY_ACR2                 0x18
++#define OFS_U2_PHY_ACR3                 0x1C
++#define OFS_U2_PHY_ACR4                 0x20
++#define OFS_U2_PHY_AMON0                0x24
++#define OFS_U2_PHY_DCR0                 0x60
++#define OFS_U2_PHY_DCR1                 0x64
++#define OFS_U2_PHY_DTM0                 0x68
++#define OFS_U2_PHY_DTM1                 0x6C
++
++#define RT_RSTCTRL_UDEV			BIT(25)
++#define RT_RSTCTRL_UHST			BIT(22)
++#define RT_SYSCFG1_USB0_HOST_MODE	BIT(10)
++
++#define MT7620_CLKCFG1_UPHY0_CLK_EN	BIT(25)
++#define MT7620_CLKCFG1_UPHY1_CLK_EN	BIT(22)
++#define RT_CLKCFG1_UPHY1_CLK_EN		BIT(20)
++#define RT_CLKCFG1_UPHY0_CLK_EN		BIT(18)
++
++#define USB_PHY_UTMI_8B60M		BIT(1)
++#define UDEV_WAKEUP			BIT(0)
++
++struct ralink_usb_phy {
++	struct reset_control	*rstdev;
++	struct reset_control	*rsthost;
++	u32			clk;
++	struct phy		*phy;
++	void __iomem		*base;
++};
++
++static void u2_phy_w32(struct ralink_usb_phy *phy, u32 val, u32 reg)
++{
++	iowrite32(val, phy->base + reg);
++}
++
++static u32 u2_phy_r32(struct ralink_usb_phy *phy, u32 reg)
++{
++	return ioread32(phy->base + reg);
++}
++
++static void
++u2_phy_init(struct ralink_usb_phy *phy)
++{
++	u2_phy_r32(phy, OFS_U2_PHY_AC2);
++	u2_phy_r32(phy, OFS_U2_PHY_ACR0);
++	u2_phy_r32(phy, OFS_U2_PHY_DCR0);
++
++	u2_phy_w32(phy, 0x00ffff02, OFS_U2_PHY_DCR0);
++	u2_phy_r32(phy, OFS_U2_PHY_DCR0);
++	u2_phy_w32(phy, 0x00555502, OFS_U2_PHY_DCR0);
++	u2_phy_r32(phy, OFS_U2_PHY_DCR0);
++	u2_phy_w32(phy, 0x00aaaa02, OFS_U2_PHY_DCR0);
++	u2_phy_r32(phy, OFS_U2_PHY_DCR0);
++	u2_phy_w32(phy, 0x00000402, OFS_U2_PHY_DCR0);
++	u2_phy_r32(phy, OFS_U2_PHY_DCR0);
++	u2_phy_w32(phy, 0x0048086a, OFS_U2_PHY_AC0);
++	u2_phy_w32(phy, 0x4400001c, OFS_U2_PHY_AC1);
++	u2_phy_w32(phy, 0xc0200000, OFS_U2_PHY_ACR3);
++	u2_phy_w32(phy, 0x02000000, OFS_U2_PHY_DTM0);
++}
++
++static int ralink_usb_phy_power_on(struct phy *_phy)
++{
++	struct ralink_usb_phy *phy = phy_get_drvdata(_phy);
++	u32 t;
++
++	/* enable the phy */
++	rt_sysc_m32(0, phy->clk, RT_SYSC_REG_CLKCFG1);
++
++	/* setup host mode */
++	rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1);
++
++	/* deassert the reset lines */
++	reset_control_deassert(phy->rsthost);
++	reset_control_deassert(phy->rstdev);
++
++	/*
++	 * The SDK kernel had a delay of 100ms. however on device
++	 * testing showed that 10ms is enough
++	 */
++	mdelay(10);
++
++	if (!IS_ERR(phy->base))
++		u2_phy_init(phy);
++
++	/* print some status info */
++	t = rt_sysc_r32(RT_SYSC_REG_USB_PHY_CFG);
++	dev_info(&phy->phy->dev, "remote usb device wakeup %s\n",
++		(t & UDEV_WAKEUP) ? ("enabled") : ("disabled"));
++	if (t & USB_PHY_UTMI_8B60M)
++		dev_info(&phy->phy->dev, "UTMI 8bit 60MHz\n");
++	else
++		dev_info(&phy->phy->dev, "UTMI 16bit 30MHz\n");
++
++	return 0;
++}
++
++static int ralink_usb_phy_power_off(struct phy *_phy)
++{
++	struct ralink_usb_phy *phy = phy_get_drvdata(_phy);
++
++	/* assert the reset lines */
++	reset_control_assert(phy->rstdev);
++	reset_control_assert(phy->rsthost);
++
++	/* disable the phy */
++	rt_sysc_m32(phy->clk, 0, RT_SYSC_REG_CLKCFG1);
++
++	return 0;
++}
++
++static struct phy_ops ralink_usb_phy_ops = {
++	.power_on	= ralink_usb_phy_power_on,
++	.power_off	= ralink_usb_phy_power_off,
++	.owner		= THIS_MODULE,
++};
++
++static const struct of_device_id ralink_usb_phy_of_match[] = {
++	{
++		.compatible = "ralink,rt3352-usbphy",
++		.data = (void *) (RT_CLKCFG1_UPHY1_CLK_EN |
++				  RT_CLKCFG1_UPHY0_CLK_EN)
++	},
++	{
++		.compatible = "mediatek,mt7620-usbphy",
++		.data = (void *) (MT7620_CLKCFG1_UPHY1_CLK_EN |
++				  MT7620_CLKCFG1_UPHY0_CLK_EN) },
++	{ },
++};
++MODULE_DEVICE_TABLE(of, ralink_usb_phy_of_match);
++
++static int ralink_usb_phy_probe(struct platform_device *pdev)
++{
++	struct resource *res;
++	struct device *dev = &pdev->dev;
++	struct phy_provider *phy_provider;
++	const struct of_device_id *match;
++	struct ralink_usb_phy *phy;
++
++	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
++	if (!phy)
++		return -ENOMEM;
++
++	match = of_match_device(ralink_usb_phy_of_match, &pdev->dev);
++	if (!match)
++		return -ENODEV;
++
++	phy->clk = (int) match->data;
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	phy->base = devm_ioremap_resource(&pdev->dev, res);
++
++	phy->rsthost = devm_reset_control_get(&pdev->dev, "host");
++	if (IS_ERR(phy->rsthost)) {
++		dev_err(dev, "host reset is missing\n");
++		return PTR_ERR(phy->rsthost);
++	}
++
++	phy->rstdev = devm_reset_control_get(&pdev->dev, "device");
++	if (IS_ERR(phy->rstdev)) {
++		dev_err(dev, "device reset is missing\n");
++		return PTR_ERR(phy->rstdev);
++	}
++
++	phy->phy = devm_phy_create(dev, NULL, &ralink_usb_phy_ops);
++	if (IS_ERR(phy->phy)) {
++		dev_err(dev, "failed to create PHY\n");
++		return PTR_ERR(phy->phy);
++	}
++	phy_set_drvdata(phy->phy, phy);
++
++	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
++
++	return PTR_ERR_OR_ZERO(phy_provider);
++}
++
++static struct platform_driver ralink_usb_phy_driver = {
++	.probe	= ralink_usb_phy_probe,
++	.driver = {
++		.of_match_table	= ralink_usb_phy_of_match,
++		.name  = "ralink-usb-phy",
++	}
++};
++module_platform_driver(ralink_usb_phy_driver);
++
++MODULE_DESCRIPTION("Ralink USB phy driver");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_LICENSE("GPL v2");

target/linux/ramips/patches-4.4/0031-uvc-add-iPassion-iP2970-support.patch

@@ -0,0 +1,246 @@
+From 975e76214cd2516eb6cfff4c3eec581872645e88 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Thu, 19 Sep 2013 01:50:59 +0200
+Subject: [PATCH 31/53] uvc: add iPassion iP2970 support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/media/usb/uvc/uvc_driver.c |   12 +++
+ drivers/media/usb/uvc/uvc_status.c |    2 +
+ drivers/media/usb/uvc/uvc_video.c  |  147 ++++++++++++++++++++++++++++++++++++
+ drivers/media/usb/uvc/uvcvideo.h   |    5 +-
+ 4 files changed, 165 insertions(+), 1 deletion(-)
+
+--- a/drivers/media/usb/uvc/uvc_driver.c
++++ b/drivers/media/usb/uvc/uvc_driver.c
+@@ -2539,6 +2539,18 @@ static struct usb_device_id uvc_ids[] =
+ 	  .bInterfaceSubClass	= 1,
+ 	  .bInterfaceProtocol	= 0,
+ 	  .driver_info		= UVC_QUIRK_FORCE_Y8 },
++	/* iPassion iP2970 */
++	{ .match_flags          = USB_DEVICE_ID_MATCH_DEVICE
++				| USB_DEVICE_ID_MATCH_INT_INFO,
++	 .idVendor		= 0x1B3B,
++	 .idProduct		= 0x2970,
++	 .bInterfaceClass	= USB_CLASS_VIDEO,
++	 .bInterfaceSubClass	= 1,
++	 .bInterfaceProtocol	= 0,
++	 .driver_info		= UVC_QUIRK_PROBE_MINMAX
++				| UVC_QUIRK_STREAM_NO_FID
++				| UVC_QUIRK_MOTION
++				| UVC_QUIRK_SINGLE_ISO },
+ 	/* Generic USB Video Class */
+ 	{ USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, 0) },
+ 	{}
+--- a/drivers/media/usb/uvc/uvc_status.c
++++ b/drivers/media/usb/uvc/uvc_status.c
+@@ -139,6 +139,7 @@ static void uvc_status_complete(struct u
+ 		switch (dev->status[0] & 0x0f) {
+ 		case UVC_STATUS_TYPE_CONTROL:
+ 			uvc_event_control(dev, dev->status, len);
++			dev->motion = 1;
+ 			break;
+ 
+ 		case UVC_STATUS_TYPE_STREAMING:
+@@ -182,6 +183,7 @@ int uvc_status_init(struct uvc_device *d
+ 	}
+ 
+ 	pipe = usb_rcvintpipe(dev->udev, ep->desc.bEndpointAddress);
++	dev->motion = 0;
+ 
+ 	/* For high-speed interrupt endpoints, the bInterval value is used as
+ 	 * an exponent of two. Some developers forgot about it.
+--- a/drivers/media/usb/uvc/uvc_video.c
++++ b/drivers/media/usb/uvc/uvc_video.c
+@@ -21,6 +21,11 @@
+ #include <linux/wait.h>
+ #include <linux/atomic.h>
+ #include <asm/unaligned.h>
++#include <linux/skbuff.h>
++#include <linux/kobject.h>
++#include <linux/netlink.h>
++#include <linux/kobject.h>
++#include <linux/workqueue.h>
+ 
+ #include <media/v4l2-common.h>
+ 
+@@ -1092,9 +1097,149 @@ static void uvc_video_decode_data(struct
+ 	}
+ }
+ 
++struct bh_priv {
++	unsigned long	seen;
++};
++
++struct bh_event {
++	const char		*name;
++	struct sk_buff		*skb;
++	struct work_struct	work;
++};
++
++#define BH_ERR(fmt, args...) printk(KERN_ERR "%s: " fmt, "webcam", ##args )
++#define BH_DBG(fmt, args...) do {} while (0)
++#define BH_SKB_SIZE     2048
++
++extern u64 uevent_next_seqnum(void);
++static int seen = 0;
++
++static int bh_event_add_var(struct bh_event *event, int argv,
++		const char *format, ...)
++{
++	static char buf[128];
++	char *s;
++	va_list args;
++	int len;
++
++	if (argv)
++		return 0;
++
++	va_start(args, format);
++	len = vsnprintf(buf, sizeof(buf), format, args);
++	va_end(args);
++
++	if (len >= sizeof(buf)) {
++		BH_ERR("buffer size too small\n");
++		WARN_ON(1);
++		return -ENOMEM;
++	}
++
++	s = skb_put(event->skb, len + 1);
++	strcpy(s, buf);
++
++	BH_DBG("added variable '%s'\n", s);
++
++	return 0;
++}
++
++static int motion_hotplug_fill_event(struct bh_event *event)
++{
++	int s = jiffies;
++	int ret;
++
++	if (!seen)
++		seen = jiffies;
++
++	ret = bh_event_add_var(event, 0, "HOME=%s", "/");
++	if (ret)
++		return ret;
++
++	ret = bh_event_add_var(event, 0, "PATH=%s",
++		"/sbin:/bin:/usr/sbin:/usr/bin");
++	if (ret)
++		return ret;
++
++	ret = bh_event_add_var(event, 0, "SUBSYSTEM=usb");
++	if (ret)
++		return ret;
++
++	ret = bh_event_add_var(event, 0, "ACTION=motion");
++	if (ret)
++		return ret;
++
++	ret = bh_event_add_var(event, 0, "SEEN=%d", s - seen);
++	if (ret)
++		return ret;
++	seen = s;
++
++	ret = bh_event_add_var(event, 0, "SEQNUM=%llu", uevent_next_seqnum());
++
++	return ret;
++}
++
++static void motion_hotplug_work(struct work_struct *work)
++{
++	struct bh_event *event = container_of(work, struct bh_event, work);
++	int ret = 0;
++
++	event->skb = alloc_skb(BH_SKB_SIZE, GFP_KERNEL);
++	if (!event->skb)
++		goto out_free_event;
++
++	ret = bh_event_add_var(event, 0, "%s@", "add");
++	if (ret)
++		goto out_free_skb;
++
++	ret = motion_hotplug_fill_event(event);
++	if (ret)
++		goto out_free_skb;
++
++	NETLINK_CB(event->skb).dst_group = 1;
++	broadcast_uevent(event->skb, 0, 1, GFP_KERNEL);
++
++out_free_skb:
++	if (ret) {
++		BH_ERR("work error %d\n", ret);
++		kfree_skb(event->skb);
++	}
++out_free_event:
++	kfree(event);
++}
++
++static int motion_hotplug_create_event(void)
++{
++	struct bh_event *event;
++
++	event = kzalloc(sizeof(*event), GFP_KERNEL);
++	if (!event)
++		return -ENOMEM;
++
++	event->name = "motion";
++
++	INIT_WORK(&event->work, (void *)(void *)motion_hotplug_work);
++	schedule_work(&event->work);
++
++	return 0;
++}
++
++#define MOTION_FLAG_OFFSET	4
+ static void uvc_video_decode_end(struct uvc_streaming *stream,
+ 		struct uvc_buffer *buf, const __u8 *data, int len)
+ {
++	if ((stream->dev->quirks & UVC_QUIRK_MOTION) &&
++			(data[len - 2] == 0xff) && (data[len - 1] == 0xd9)) {
++		u8 *mem;
++		buf->state = UVC_BUF_STATE_READY;
++		mem = (u8 *) (buf->mem + MOTION_FLAG_OFFSET);
++		if ( stream->dev->motion ) {
++			stream->dev->motion = 0;
++			motion_hotplug_create_event();
++		} else {
++			*mem &= 0x7f;
++		}
++	}
++
+ 	/* Mark the buffer as done if the EOF marker is set. */
+ 	if (data[1] & UVC_STREAM_EOF && buf->bytesused != 0) {
+ 		uvc_trace(UVC_TRACE_FRAME, "Frame complete (EOF found).\n");
+@@ -1507,6 +1652,8 @@ static int uvc_init_video_isoc(struct uv
+ 	if (npackets == 0)
+ 		return -ENOMEM;
+ 
++	if (stream->dev->quirks & UVC_QUIRK_SINGLE_ISO)
++		npackets = 1;
+ 	size = npackets * psize;
+ 
+ 	for (i = 0; i < UVC_URBS; ++i) {
+--- a/drivers/media/usb/uvc/uvcvideo.h
++++ b/drivers/media/usb/uvc/uvcvideo.h
+@@ -152,7 +152,9 @@
+ #define UVC_QUIRK_RESTRICT_FRAME_RATE	0x00000200
+ #define UVC_QUIRK_RESTORE_CTRLS_ON_INIT	0x00000400
+ #define UVC_QUIRK_FORCE_Y8		0x00000800
+-
++#define UVC_QUIRK_MOTION		0x00001000
++#define UVC_QUIRK_SINGLE_ISO		0x00002000
++ 
+ /* Format flags */
+ #define UVC_FMT_FLAG_COMPRESSED		0x00000001
+ #define UVC_FMT_FLAG_STREAM		0x00000002
+@@ -550,6 +552,7 @@ struct uvc_device {
+ 	__u8 *status;
+ 	struct input_dev *input;
+ 	char input_phys[64];
++	int motion;
+ };
+ 
+ enum uvc_handle_state {

target/linux/ramips/patches-4.4/0032-USB-dwc2-add-device_reset.patch

@@ -0,0 +1,29 @@
+From a758e0870c6d1e4b0272f6e7f9efa9face5534bb Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:49:07 +0100
+Subject: [PATCH 32/53] USB: dwc2: add device_reset()
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/usb/dwc2/hcd.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/usb/dwc2/hcd.c
++++ b/drivers/usb/dwc2/hcd.c
+@@ -47,6 +47,7 @@
+ #include <linux/io.h>
+ #include <linux/slab.h>
+ #include <linux/usb.h>
++#include <linux/reset.h>
+ 
+ #include <linux/usb/hcd.h>
+ #include <linux/usb/ch11.h>
+@@ -3002,6 +3003,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hso
+ 
+ 	retval = -ENOMEM;
+ 
++	device_reset(hsotg->dev);
++
+ 	hcfg = dwc2_readl(hsotg->regs + HCFG);
+ 	dev_dbg(hsotg->dev, "hcfg=%08x\n", hcfg);
+ 

target/linux/ramips/patches-4.4/0033-xhci-mediatek-support-MTK-xHCI-host-controller.patch

@@ -0,0 +1,1517 @@
+From: Chunfeng Yun <[email protected]>
+Date: Tue, 24 Nov 2015 13:09:55 +0200
+Subject: [PATCH] xhci: mediatek: support MTK xHCI host controller
+
+There some vendor quirks for MTK xhci host controller:
+1. It defines some extra SW scheduling parameters for HW
+  to minimize the scheduling effort for synchronous and
+  interrupt endpoints. The parameters are put into reseved
+  DWs of slot context and endpoint context.
+2. Its IMODI unit for Interrupter Moderation register is
+  8 times as much as that defined in xHCI spec.
+3. Its TDS in  Normal TRB defines a number of packets that
+  remains to be transferred for a TD after processing all
+  Max packets in all previous TRBs.
+
+Signed-off-by: Chunfeng Yun <[email protected]>
+Tested-by: Daniel Thompson <[email protected]>
+Reviewed-by: Daniel Thompson <[email protected]>
+Signed-off-by: Mathias Nyman <[email protected]>
+Signed-off-by: Greg Kroah-Hartman <[email protected]>
+---
+ create mode 100644 drivers/usb/host/xhci-mtk-sch.c
+ create mode 100644 drivers/usb/host/xhci-mtk.c
+ create mode 100644 drivers/usb/host/xhci-mtk.h
+
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -41,6 +41,15 @@ config USB_XHCI_PLATFORM
+ 
+ 	  If unsure, say N.
+ 
++config USB_XHCI_MTK
++	tristate "xHCI support for Mediatek MT65xx"
++	select MFD_SYSCON
++	depends on ARCH_MEDIATEK || COMPILE_TEST
++	---help---
++	  Say 'Y' to enable the support for the xHCI host controller
++	  found in Mediatek MT65xx SoCs.
++	  If unsure, say N.
++
+ config USB_XHCI_MVEBU
+ 	tristate "xHCI support for Marvell Armada 375/38x"
+ 	select USB_XHCI_PLATFORM
+--- a/drivers/usb/host/Makefile
++++ b/drivers/usb/host/Makefile
+@@ -13,6 +13,9 @@ fhci-$(CONFIG_FHCI_DEBUG) += fhci-dbg.o
+ xhci-hcd-y := xhci.o xhci-mem.o
+ xhci-hcd-y += xhci-ring.o xhci-hub.o xhci-dbg.o
+ xhci-hcd-y += xhci-trace.o
++ifneq ($(CONFIG_USB_XHCI_MTK), )
++	xhci-hcd-y += xhci-mtk-sch.o
++endif
+ 
+ xhci-plat-hcd-y := xhci-plat.o
+ ifneq ($(CONFIG_USB_XHCI_MVEBU), )
+@@ -64,6 +67,7 @@ obj-$(CONFIG_USB_FHCI_HCD)	+= fhci.o
+ obj-$(CONFIG_USB_XHCI_HCD)	+= xhci-hcd.o
+ obj-$(CONFIG_USB_XHCI_PCI)	+= xhci-pci.o
+ obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
++obj-$(CONFIG_USB_XHCI_MTK)	+= xhci-mtk.o
+ obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd.o
+ obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
+ obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o
+--- /dev/null
++++ b/drivers/usb/host/xhci-mtk-sch.c
+@@ -0,0 +1,415 @@
++/*
++ * Copyright (c) 2015 MediaTek Inc.
++ * Author:
++ *  Zhigang.Wei <[email protected]>
++ *  Chunfeng.Yun <[email protected]>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++
++#include "xhci.h"
++#include "xhci-mtk.h"
++
++#define SS_BW_BOUNDARY	51000
++/* table 5-5. High-speed Isoc Transaction Limits in usb_20 spec */
++#define HS_BW_BOUNDARY	6144
++/* usb2 spec section11.18.1: at most 188 FS bytes per microframe */
++#define FS_PAYLOAD_MAX 188
++
++/* mtk scheduler bitmasks */
++#define EP_BPKTS(p)	((p) & 0x3f)
++#define EP_BCSCOUNT(p)	(((p) & 0x7) << 8)
++#define EP_BBM(p)	((p) << 11)
++#define EP_BOFFSET(p)	((p) & 0x3fff)
++#define EP_BREPEAT(p)	(((p) & 0x7fff) << 16)
++
++static int is_fs_or_ls(enum usb_device_speed speed)
++{
++	return speed == USB_SPEED_FULL || speed == USB_SPEED_LOW;
++}
++
++/*
++* get the index of bandwidth domains array which @ep belongs to.
++*
++* the bandwidth domain array is saved to @sch_array of struct xhci_hcd_mtk,
++* each HS root port is treated as a single bandwidth domain,
++* but each SS root port is treated as two bandwidth domains, one for IN eps,
++* one for OUT eps.
++* @real_port value is defined as follow according to xHCI spec:
++* 1 for SSport0, ..., N+1 for SSportN, N+2 for HSport0, N+3 for HSport1, etc
++* so the bandwidth domain array is organized as follow for simplification:
++* SSport0-OUT, SSport0-IN, ..., SSportX-OUT, SSportX-IN, HSport0, ..., HSportY
++*/
++static int get_bw_index(struct xhci_hcd *xhci, struct usb_device *udev,
++	struct usb_host_endpoint *ep)
++{
++	struct xhci_virt_device *virt_dev;
++	int bw_index;
++
++	virt_dev = xhci->devs[udev->slot_id];
++
++	if (udev->speed == USB_SPEED_SUPER) {
++		if (usb_endpoint_dir_out(&ep->desc))
++			bw_index = (virt_dev->real_port - 1) * 2;
++		else
++			bw_index = (virt_dev->real_port - 1) * 2 + 1;
++	} else {
++		/* add one more for each SS port */
++		bw_index = virt_dev->real_port + xhci->num_usb3_ports - 1;
++	}
++
++	return bw_index;
++}
++
++static void setup_sch_info(struct usb_device *udev,
++		struct xhci_ep_ctx *ep_ctx, struct mu3h_sch_ep_info *sch_ep)
++{
++	u32 ep_type;
++	u32 ep_interval;
++	u32 max_packet_size;
++	u32 max_burst;
++	u32 mult;
++	u32 esit_pkts;
++
++	ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2));
++	ep_interval = CTX_TO_EP_INTERVAL(le32_to_cpu(ep_ctx->ep_info));
++	max_packet_size = MAX_PACKET_DECODED(le32_to_cpu(ep_ctx->ep_info2));
++	max_burst = CTX_TO_MAX_BURST(le32_to_cpu(ep_ctx->ep_info2));
++	mult = CTX_TO_EP_MULT(le32_to_cpu(ep_ctx->ep_info));
++
++	sch_ep->esit = 1 << ep_interval;
++	sch_ep->offset = 0;
++	sch_ep->burst_mode = 0;
++
++	if (udev->speed == USB_SPEED_HIGH) {
++		sch_ep->cs_count = 0;
++
++		/*
++		 * usb_20 spec section5.9
++		 * a single microframe is enough for HS synchromous endpoints
++		 * in a interval
++		 */
++		sch_ep->num_budget_microframes = 1;
++		sch_ep->repeat = 0;
++
++		/*
++		 * xHCI spec section6.2.3.4
++		 * @max_burst is the number of additional transactions
++		 * opportunities per microframe
++		 */
++		sch_ep->pkts = max_burst + 1;
++		sch_ep->bw_cost_per_microframe = max_packet_size * sch_ep->pkts;
++	} else if (udev->speed == USB_SPEED_SUPER) {
++		/* usb3_r1 spec section4.4.7 & 4.4.8 */
++		sch_ep->cs_count = 0;
++		esit_pkts = (mult + 1) * (max_burst + 1);
++		if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {
++			sch_ep->pkts = esit_pkts;
++			sch_ep->num_budget_microframes = 1;
++			sch_ep->repeat = 0;
++		}
++
++		if (ep_type == ISOC_IN_EP || ep_type == ISOC_OUT_EP) {
++			if (esit_pkts <= sch_ep->esit)
++				sch_ep->pkts = 1;
++			else
++				sch_ep->pkts = roundup_pow_of_two(esit_pkts)
++					/ sch_ep->esit;
++
++			sch_ep->num_budget_microframes =
++				DIV_ROUND_UP(esit_pkts, sch_ep->pkts);
++
++			if (sch_ep->num_budget_microframes > 1)
++				sch_ep->repeat = 1;
++			else
++				sch_ep->repeat = 0;
++		}
++		sch_ep->bw_cost_per_microframe = max_packet_size * sch_ep->pkts;
++	} else if (is_fs_or_ls(udev->speed)) {
++
++		/*
++		 * usb_20 spec section11.18.4
++		 * assume worst cases
++		 */
++		sch_ep->repeat = 0;
++		sch_ep->pkts = 1; /* at most one packet for each microframe */
++		if (ep_type == INT_IN_EP || ep_type == INT_OUT_EP) {
++			sch_ep->cs_count = 3; /* at most need 3 CS*/
++			/* one for SS and one for budgeted transaction */
++			sch_ep->num_budget_microframes = sch_ep->cs_count + 2;
++			sch_ep->bw_cost_per_microframe = max_packet_size;
++		}
++		if (ep_type == ISOC_OUT_EP) {
++
++			/*
++			 * the best case FS budget assumes that 188 FS bytes
++			 * occur in each microframe
++			 */
++			sch_ep->num_budget_microframes = DIV_ROUND_UP(
++				max_packet_size, FS_PAYLOAD_MAX);
++			sch_ep->bw_cost_per_microframe = FS_PAYLOAD_MAX;
++			sch_ep->cs_count = sch_ep->num_budget_microframes;
++		}
++		if (ep_type == ISOC_IN_EP) {
++			/* at most need additional two CS. */
++			sch_ep->cs_count = DIV_ROUND_UP(
++				max_packet_size, FS_PAYLOAD_MAX) + 2;
++			sch_ep->num_budget_microframes = sch_ep->cs_count + 2;
++			sch_ep->bw_cost_per_microframe = FS_PAYLOAD_MAX;
++		}
++	}
++}
++
++/* Get maximum bandwidth when we schedule at offset slot. */
++static u32 get_max_bw(struct mu3h_sch_bw_info *sch_bw,
++	struct mu3h_sch_ep_info *sch_ep, u32 offset)
++{
++	u32 num_esit;
++	u32 max_bw = 0;
++	int i;
++	int j;
++
++	num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
++	for (i = 0; i < num_esit; i++) {
++		u32 base = offset + i * sch_ep->esit;
++
++		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
++			if (sch_bw->bus_bw[base + j] > max_bw)
++				max_bw = sch_bw->bus_bw[base + j];
++		}
++	}
++	return max_bw;
++}
++
++static void update_bus_bw(struct mu3h_sch_bw_info *sch_bw,
++	struct mu3h_sch_ep_info *sch_ep, int bw_cost)
++{
++	u32 num_esit;
++	u32 base;
++	int i;
++	int j;
++
++	num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit;
++	for (i = 0; i < num_esit; i++) {
++		base = sch_ep->offset + i * sch_ep->esit;
++		for (j = 0; j < sch_ep->num_budget_microframes; j++)
++			sch_bw->bus_bw[base + j] += bw_cost;
++	}
++}
++
++static int check_sch_bw(struct usb_device *udev,
++	struct mu3h_sch_bw_info *sch_bw, struct mu3h_sch_ep_info *sch_ep)
++{
++	u32 offset;
++	u32 esit;
++	u32 num_budget_microframes;
++	u32 min_bw;
++	u32 min_index;
++	u32 worst_bw;
++	u32 bw_boundary;
++
++	if (sch_ep->esit > XHCI_MTK_MAX_ESIT)
++		sch_ep->esit = XHCI_MTK_MAX_ESIT;
++
++	esit = sch_ep->esit;
++	num_budget_microframes = sch_ep->num_budget_microframes;
++
++	/*
++	 * Search through all possible schedule microframes.
++	 * and find a microframe where its worst bandwidth is minimum.
++	 */
++	min_bw = ~0;
++	min_index = 0;
++	for (offset = 0; offset < esit; offset++) {
++		if ((offset + num_budget_microframes) > sch_ep->esit)
++			break;
++
++		/*
++		 * usb_20 spec section11.18:
++		 * must never schedule Start-Split in Y6
++		 */
++		if (is_fs_or_ls(udev->speed) && (offset % 8 == 6))
++			continue;
++
++		worst_bw = get_max_bw(sch_bw, sch_ep, offset);
++		if (min_bw > worst_bw) {
++			min_bw = worst_bw;
++			min_index = offset;
++		}
++		if (min_bw == 0)
++			break;
++	}
++	sch_ep->offset = min_index;
++
++	bw_boundary = (udev->speed == USB_SPEED_SUPER)
++				? SS_BW_BOUNDARY : HS_BW_BOUNDARY;
++
++	/* check bandwidth */
++	if (min_bw + sch_ep->bw_cost_per_microframe > bw_boundary)
++		return -ERANGE;
++
++	/* update bus bandwidth info */
++	update_bus_bw(sch_bw, sch_ep, sch_ep->bw_cost_per_microframe);
++
++	return 0;
++}
++
++static bool need_bw_sch(struct usb_host_endpoint *ep,
++	enum usb_device_speed speed, int has_tt)
++{
++	/* only for periodic endpoints */
++	if (usb_endpoint_xfer_control(&ep->desc)
++		|| usb_endpoint_xfer_bulk(&ep->desc))
++		return false;
++
++	/*
++	 * for LS & FS periodic endpoints which its device don't attach
++	 * to TT are also ignored, root-hub will schedule them directly
++	 */
++	if (is_fs_or_ls(speed) && !has_tt)
++		return false;
++
++	return true;
++}
++
++int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk)
++{
++	struct mu3h_sch_bw_info *sch_array;
++	int num_usb_bus;
++	int i;
++
++	/* ss IN and OUT are separated */
++	num_usb_bus = mtk->num_u3_ports * 2 + mtk->num_u2_ports;
++
++	sch_array = kcalloc(num_usb_bus, sizeof(*sch_array), GFP_KERNEL);
++	if (sch_array == NULL)
++		return -ENOMEM;
++
++	for (i = 0; i < num_usb_bus; i++)
++		INIT_LIST_HEAD(&sch_array[i].bw_ep_list);
++
++	mtk->sch_array = sch_array;
++
++	return 0;
++}
++EXPORT_SYMBOL_GPL(xhci_mtk_sch_init);
++
++void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk)
++{
++	kfree(mtk->sch_array);
++}
++EXPORT_SYMBOL_GPL(xhci_mtk_sch_exit);
++
++int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
++		struct usb_host_endpoint *ep)
++{
++	struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
++	struct xhci_hcd *xhci;
++	struct xhci_ep_ctx *ep_ctx;
++	struct xhci_slot_ctx *slot_ctx;
++	struct xhci_virt_device *virt_dev;
++	struct mu3h_sch_bw_info *sch_bw;
++	struct mu3h_sch_ep_info *sch_ep;
++	struct mu3h_sch_bw_info *sch_array;
++	unsigned int ep_index;
++	int bw_index;
++	int ret = 0;
++
++	xhci = hcd_to_xhci(hcd);
++	virt_dev = xhci->devs[udev->slot_id];
++	ep_index = xhci_get_endpoint_index(&ep->desc);
++	slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
++	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
++	sch_array = mtk->sch_array;
++
++	xhci_dbg(xhci, "%s() type:%d, speed:%d, mpkt:%d, dir:%d, ep:%p\n",
++		__func__, usb_endpoint_type(&ep->desc), udev->speed,
++		GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)),
++		usb_endpoint_dir_in(&ep->desc), ep);
++
++	if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT))
++		return 0;
++
++	bw_index = get_bw_index(xhci, udev, ep);
++	sch_bw = &sch_array[bw_index];
++
++	sch_ep = kzalloc(sizeof(struct mu3h_sch_ep_info), GFP_NOIO);
++	if (!sch_ep)
++		return -ENOMEM;
++
++	setup_sch_info(udev, ep_ctx, sch_ep);
++
++	ret = check_sch_bw(udev, sch_bw, sch_ep);
++	if (ret) {
++		xhci_err(xhci, "Not enough bandwidth!\n");
++		kfree(sch_ep);
++		return -ENOSPC;
++	}
++
++	list_add_tail(&sch_ep->endpoint, &sch_bw->bw_ep_list);
++	sch_ep->ep = ep;
++
++	ep_ctx->reserved[0] |= cpu_to_le32(EP_BPKTS(sch_ep->pkts)
++		| EP_BCSCOUNT(sch_ep->cs_count) | EP_BBM(sch_ep->burst_mode));
++	ep_ctx->reserved[1] |= cpu_to_le32(EP_BOFFSET(sch_ep->offset)
++		| EP_BREPEAT(sch_ep->repeat));
++
++	xhci_dbg(xhci, " PKTS:%x, CSCOUNT:%x, BM:%x, OFFSET:%x, REPEAT:%x\n",
++			sch_ep->pkts, sch_ep->cs_count, sch_ep->burst_mode,
++			sch_ep->offset, sch_ep->repeat);
++
++	return 0;
++}
++EXPORT_SYMBOL_GPL(xhci_mtk_add_ep_quirk);
++
++void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
++		struct usb_host_endpoint *ep)
++{
++	struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
++	struct xhci_hcd *xhci;
++	struct xhci_slot_ctx *slot_ctx;
++	struct xhci_virt_device *virt_dev;
++	struct mu3h_sch_bw_info *sch_array;
++	struct mu3h_sch_bw_info *sch_bw;
++	struct mu3h_sch_ep_info *sch_ep;
++	int bw_index;
++
++	xhci = hcd_to_xhci(hcd);
++	virt_dev = xhci->devs[udev->slot_id];
++	slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
++	sch_array = mtk->sch_array;
++
++	xhci_dbg(xhci, "%s() type:%d, speed:%d, mpks:%d, dir:%d, ep:%p\n",
++		__func__, usb_endpoint_type(&ep->desc), udev->speed,
++		GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)),
++		usb_endpoint_dir_in(&ep->desc), ep);
++
++	if (!need_bw_sch(ep, udev->speed, slot_ctx->tt_info & TT_SLOT))
++		return;
++
++	bw_index = get_bw_index(xhci, udev, ep);
++	sch_bw = &sch_array[bw_index];
++
++	list_for_each_entry(sch_ep, &sch_bw->bw_ep_list, endpoint) {
++		if (sch_ep->ep == ep) {
++			update_bus_bw(sch_bw, sch_ep,
++				-sch_ep->bw_cost_per_microframe);
++			list_del(&sch_ep->endpoint);
++			kfree(sch_ep);
++			break;
++		}
++	}
++}
++EXPORT_SYMBOL_GPL(xhci_mtk_drop_ep_quirk);
+--- /dev/null
++++ b/drivers/usb/host/xhci-mtk.c
+@@ -0,0 +1,763 @@
++/*
++ * MediaTek xHCI Host Controller Driver
++ *
++ * Copyright (c) 2015 MediaTek Inc.
++ * Author:
++ *  Chunfeng Yun <[email protected]>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/clk.h>
++#include <linux/dma-mapping.h>
++#include <linux/iopoll.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/pm_runtime.h>
++#include <linux/regmap.h>
++#include <linux/regulator/consumer.h>
++
++#include "xhci.h"
++#include "xhci-mtk.h"
++
++/* ip_pw_ctrl0 register */
++#define CTRL0_IP_SW_RST	BIT(0)
++
++/* ip_pw_ctrl1 register */
++#define CTRL1_IP_HOST_PDN	BIT(0)
++
++/* ip_pw_ctrl2 register */
++#define CTRL2_IP_DEV_PDN	BIT(0)
++
++/* ip_pw_sts1 register */
++#define STS1_IP_SLEEP_STS	BIT(30)
++#define STS1_XHCI_RST		BIT(11)
++#define STS1_SYS125_RST	BIT(10)
++#define STS1_REF_RST		BIT(8)
++#define STS1_SYSPLL_STABLE	BIT(0)
++
++/* ip_xhci_cap register */
++#define CAP_U3_PORT_NUM(p)	((p) & 0xff)
++#define CAP_U2_PORT_NUM(p)	(((p) >> 8) & 0xff)
++
++/* u3_ctrl_p register */
++#define CTRL_U3_PORT_HOST_SEL	BIT(2)
++#define CTRL_U3_PORT_PDN	BIT(1)
++#define CTRL_U3_PORT_DIS	BIT(0)
++
++/* u2_ctrl_p register */
++#define CTRL_U2_PORT_HOST_SEL	BIT(2)
++#define CTRL_U2_PORT_PDN	BIT(1)
++#define CTRL_U2_PORT_DIS	BIT(0)
++
++/* u2_phy_pll register */
++#define CTRL_U2_FORCE_PLL_STB	BIT(28)
++
++#define PERI_WK_CTRL0		0x400
++#define UWK_CTR0_0P_LS_PE	BIT(8)  /* posedge */
++#define UWK_CTR0_0P_LS_NE	BIT(7)  /* negedge for 0p linestate*/
++#define UWK_CTL1_1P_LS_C(x)	(((x) & 0xf) << 1)
++#define UWK_CTL1_1P_LS_E	BIT(0)
++
++#define PERI_WK_CTRL1		0x404
++#define UWK_CTL1_IS_C(x)	(((x) & 0xf) << 26)
++#define UWK_CTL1_IS_E		BIT(25)
++#define UWK_CTL1_0P_LS_C(x)	(((x) & 0xf) << 21)
++#define UWK_CTL1_0P_LS_E	BIT(20)
++#define UWK_CTL1_IDDIG_C(x)	(((x) & 0xf) << 11)  /* cycle debounce */
++#define UWK_CTL1_IDDIG_E	BIT(10) /* enable debounce */
++#define UWK_CTL1_IDDIG_P	BIT(9)  /* polarity */
++#define UWK_CTL1_0P_LS_P	BIT(7)
++#define UWK_CTL1_IS_P		BIT(6)  /* polarity for ip sleep */
++
++enum ssusb_wakeup_src {
++	SSUSB_WK_IP_SLEEP = 1,
++	SSUSB_WK_LINE_STATE = 2,
++};
++
++static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
++{
++	struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs;
++	u32 value, check_val;
++	int ret;
++	int i;
++
++	/* power on host ip */
++	value = readl(&ippc->ip_pw_ctr1);
++	value &= ~CTRL1_IP_HOST_PDN;
++	writel(value, &ippc->ip_pw_ctr1);
++
++	/* power on and enable all u3 ports */
++	for (i = 0; i < mtk->num_u3_ports; i++) {
++		value = readl(&ippc->u3_ctrl_p[i]);
++		value &= ~(CTRL_U3_PORT_PDN | CTRL_U3_PORT_DIS);
++		value |= CTRL_U3_PORT_HOST_SEL;
++		writel(value, &ippc->u3_ctrl_p[i]);
++	}
++
++	/* power on and enable all u2 ports */
++	for (i = 0; i < mtk->num_u2_ports; i++) {
++		value = readl(&ippc->u2_ctrl_p[i]);
++		value &= ~(CTRL_U2_PORT_PDN | CTRL_U2_PORT_DIS);
++		value |= CTRL_U2_PORT_HOST_SEL;
++		writel(value, &ippc->u2_ctrl_p[i]);
++	}
++
++	/*
++	 * wait for clocks to be stable, and clock domains reset to
++	 * be inactive after power on and enable ports
++	 */
++	check_val = STS1_SYSPLL_STABLE | STS1_REF_RST |
++			STS1_SYS125_RST | STS1_XHCI_RST;
++
++	ret = readl_poll_timeout(&ippc->ip_pw_sts1, value,
++			  (check_val == (value & check_val)), 100, 20000);
++	if (ret) {
++		dev_err(mtk->dev, "clocks are not stable (0x%x)\n", value);
++		return ret;
++	}
++
++	return 0;
++}
++
++static int xhci_mtk_host_disable(struct xhci_hcd_mtk *mtk)
++{
++	struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs;
++	u32 value;
++	int ret;
++	int i;
++
++	/* power down all u3 ports */
++	for (i = 0; i < mtk->num_u3_ports; i++) {
++		value = readl(&ippc->u3_ctrl_p[i]);
++		value |= CTRL_U3_PORT_PDN;
++		writel(value, &ippc->u3_ctrl_p[i]);
++	}
++
++	/* power down all u2 ports */
++	for (i = 0; i < mtk->num_u2_ports; i++) {
++		value = readl(&ippc->u2_ctrl_p[i]);
++		value |= CTRL_U2_PORT_PDN;
++		writel(value, &ippc->u2_ctrl_p[i]);
++	}
++
++	/* power down host ip */
++	value = readl(&ippc->ip_pw_ctr1);
++	value |= CTRL1_IP_HOST_PDN;
++	writel(value, &ippc->ip_pw_ctr1);
++
++	/* wait for host ip to sleep */
++	ret = readl_poll_timeout(&ippc->ip_pw_sts1, value,
++			  (value & STS1_IP_SLEEP_STS), 100, 100000);
++	if (ret) {
++		dev_err(mtk->dev, "ip sleep failed!!!\n");
++		return ret;
++	}
++	return 0;
++}
++
++static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk)
++{
++	struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs;
++	u32 value;
++
++	/* reset whole ip */
++	value = readl(&ippc->ip_pw_ctr0);
++	value |= CTRL0_IP_SW_RST;
++	writel(value, &ippc->ip_pw_ctr0);
++	udelay(1);
++	value = readl(&ippc->ip_pw_ctr0);
++	value &= ~CTRL0_IP_SW_RST;
++	writel(value, &ippc->ip_pw_ctr0);
++
++	/*
++	 * device ip is default power-on in fact
++	 * power down device ip, otherwise ip-sleep will fail
++	 */
++	value = readl(&ippc->ip_pw_ctr2);
++	value |= CTRL2_IP_DEV_PDN;
++	writel(value, &ippc->ip_pw_ctr2);
++
++	value = readl(&ippc->ip_xhci_cap);
++	mtk->num_u3_ports = CAP_U3_PORT_NUM(value);
++	mtk->num_u2_ports = CAP_U2_PORT_NUM(value);
++	dev_dbg(mtk->dev, "%s u2p:%d, u3p:%d\n", __func__,
++			mtk->num_u2_ports, mtk->num_u3_ports);
++
++	return xhci_mtk_host_enable(mtk);
++}
++
++static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk)
++{
++	int ret;
++
++	ret = clk_prepare_enable(mtk->sys_clk);
++	if (ret) {
++		dev_err(mtk->dev, "failed to enable sys_clk\n");
++		goto sys_clk_err;
++	}
++
++	if (mtk->wakeup_src) {
++		ret = clk_prepare_enable(mtk->wk_deb_p0);
++		if (ret) {
++			dev_err(mtk->dev, "failed to enable wk_deb_p0\n");
++			goto usb_p0_err;
++		}
++
++		ret = clk_prepare_enable(mtk->wk_deb_p1);
++		if (ret) {
++			dev_err(mtk->dev, "failed to enable wk_deb_p1\n");
++			goto usb_p1_err;
++		}
++	}
++	return 0;
++
++usb_p1_err:
++	clk_disable_unprepare(mtk->wk_deb_p0);
++usb_p0_err:
++	clk_disable_unprepare(mtk->sys_clk);
++sys_clk_err:
++	return -EINVAL;
++}
++
++static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk)
++{
++	if (mtk->wakeup_src) {
++		clk_disable_unprepare(mtk->wk_deb_p1);
++		clk_disable_unprepare(mtk->wk_deb_p0);
++	}
++	clk_disable_unprepare(mtk->sys_clk);
++}
++
++/* only clocks can be turn off for ip-sleep wakeup mode */
++static void usb_wakeup_ip_sleep_en(struct xhci_hcd_mtk *mtk)
++{
++	u32 tmp;
++	struct regmap *pericfg = mtk->pericfg;
++
++	regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
++	tmp &= ~UWK_CTL1_IS_P;
++	tmp &= ~(UWK_CTL1_IS_C(0xf));
++	tmp |= UWK_CTL1_IS_C(0x8);
++	regmap_write(pericfg, PERI_WK_CTRL1, tmp);
++	regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_IS_E);
++
++	regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
++	dev_dbg(mtk->dev, "%s(): WK_CTRL1[P6,E25,C26:29]=%#x\n",
++		__func__, tmp);
++}
++
++static void usb_wakeup_ip_sleep_dis(struct xhci_hcd_mtk *mtk)
++{
++	u32 tmp;
++
++	regmap_read(mtk->pericfg, PERI_WK_CTRL1, &tmp);
++	tmp &= ~UWK_CTL1_IS_E;
++	regmap_write(mtk->pericfg, PERI_WK_CTRL1, tmp);
++}
++
++/*
++* for line-state wakeup mode, phy's power should not power-down
++* and only support cable plug in/out
++*/
++static void usb_wakeup_line_state_en(struct xhci_hcd_mtk *mtk)
++{
++	u32 tmp;
++	struct regmap *pericfg = mtk->pericfg;
++
++	/* line-state of u2-port0 */
++	regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
++	tmp &= ~UWK_CTL1_0P_LS_P;
++	tmp &= ~(UWK_CTL1_0P_LS_C(0xf));
++	tmp |= UWK_CTL1_0P_LS_C(0x8);
++	regmap_write(pericfg, PERI_WK_CTRL1, tmp);
++	regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
++	regmap_write(pericfg, PERI_WK_CTRL1, tmp | UWK_CTL1_0P_LS_E);
++
++	/* line-state of u2-port1 */
++	regmap_read(pericfg, PERI_WK_CTRL0, &tmp);
++	tmp &= ~(UWK_CTL1_1P_LS_C(0xf));
++	tmp |= UWK_CTL1_1P_LS_C(0x8);
++	regmap_write(pericfg, PERI_WK_CTRL0, tmp);
++	regmap_write(pericfg, PERI_WK_CTRL0, tmp | UWK_CTL1_1P_LS_E);
++}
++
++static void usb_wakeup_line_state_dis(struct xhci_hcd_mtk *mtk)
++{
++	u32 tmp;
++	struct regmap *pericfg = mtk->pericfg;
++
++	/* line-state of u2-port0 */
++	regmap_read(pericfg, PERI_WK_CTRL1, &tmp);
++	tmp &= ~UWK_CTL1_0P_LS_E;
++	regmap_write(pericfg, PERI_WK_CTRL1, tmp);
++
++	/* line-state of u2-port1 */
++	regmap_read(pericfg, PERI_WK_CTRL0, &tmp);
++	tmp &= ~UWK_CTL1_1P_LS_E;
++	regmap_write(pericfg, PERI_WK_CTRL0, tmp);
++}
++
++static void usb_wakeup_enable(struct xhci_hcd_mtk *mtk)
++{
++	if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP)
++		usb_wakeup_ip_sleep_en(mtk);
++	else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE)
++		usb_wakeup_line_state_en(mtk);
++}
++
++static void usb_wakeup_disable(struct xhci_hcd_mtk *mtk)
++{
++	if (mtk->wakeup_src == SSUSB_WK_IP_SLEEP)
++		usb_wakeup_ip_sleep_dis(mtk);
++	else if (mtk->wakeup_src == SSUSB_WK_LINE_STATE)
++		usb_wakeup_line_state_dis(mtk);
++}
++
++static int usb_wakeup_of_property_parse(struct xhci_hcd_mtk *mtk,
++				struct device_node *dn)
++{
++	struct device *dev = mtk->dev;
++
++	/*
++	* wakeup function is optional, so it is not an error if this property
++	* does not exist, and in such case, no need to get relative
++	* properties anymore.
++	*/
++	of_property_read_u32(dn, "mediatek,wakeup-src", &mtk->wakeup_src);
++	if (!mtk->wakeup_src)
++		return 0;
++
++	mtk->wk_deb_p0 = devm_clk_get(dev, "wakeup_deb_p0");
++	if (IS_ERR(mtk->wk_deb_p0)) {
++		dev_err(dev, "fail to get wakeup_deb_p0\n");
++		return PTR_ERR(mtk->wk_deb_p0);
++	}
++
++	mtk->wk_deb_p1 = devm_clk_get(dev, "wakeup_deb_p1");
++	if (IS_ERR(mtk->wk_deb_p1)) {
++		dev_err(dev, "fail to get wakeup_deb_p1\n");
++		return PTR_ERR(mtk->wk_deb_p1);
++	}
++
++	mtk->pericfg = syscon_regmap_lookup_by_phandle(dn,
++						"mediatek,syscon-wakeup");
++	if (IS_ERR(mtk->pericfg)) {
++		dev_err(dev, "fail to get pericfg regs\n");
++		return PTR_ERR(mtk->pericfg);
++	}
++
++	return 0;
++}
++
++static int xhci_mtk_setup(struct usb_hcd *hcd);
++static const struct xhci_driver_overrides xhci_mtk_overrides __initconst = {
++	.extra_priv_size = sizeof(struct xhci_hcd),
++	.reset = xhci_mtk_setup,
++};
++
++static struct hc_driver __read_mostly xhci_mtk_hc_driver;
++
++static int xhci_mtk_phy_init(struct xhci_hcd_mtk *mtk)
++{
++	int i;
++	int ret;
++
++	for (i = 0; i < mtk->num_phys; i++) {
++		ret = phy_init(mtk->phys[i]);
++		if (ret)
++			goto exit_phy;
++	}
++	return 0;
++
++exit_phy:
++	for (; i > 0; i--)
++		phy_exit(mtk->phys[i - 1]);
++
++	return ret;
++}
++
++static int xhci_mtk_phy_exit(struct xhci_hcd_mtk *mtk)
++{
++	int i;
++
++	for (i = 0; i < mtk->num_phys; i++)
++		phy_exit(mtk->phys[i]);
++
++	return 0;
++}
++
++static int xhci_mtk_phy_power_on(struct xhci_hcd_mtk *mtk)
++{
++	int i;
++	int ret;
++
++	for (i = 0; i < mtk->num_phys; i++) {
++		ret = phy_power_on(mtk->phys[i]);
++		if (ret)
++			goto power_off_phy;
++	}
++	return 0;
++
++power_off_phy:
++	for (; i > 0; i--)
++		phy_power_off(mtk->phys[i - 1]);
++
++	return ret;
++}
++
++static void xhci_mtk_phy_power_off(struct xhci_hcd_mtk *mtk)
++{
++	unsigned int i;
++
++	for (i = 0; i < mtk->num_phys; i++)
++		phy_power_off(mtk->phys[i]);
++}
++
++static int xhci_mtk_ldos_enable(struct xhci_hcd_mtk *mtk)
++{
++	int ret;
++
++	ret = regulator_enable(mtk->vbus);
++	if (ret) {
++		dev_err(mtk->dev, "failed to enable vbus\n");
++		return ret;
++	}
++
++	ret = regulator_enable(mtk->vusb33);
++	if (ret) {
++		dev_err(mtk->dev, "failed to enable vusb33\n");
++		regulator_disable(mtk->vbus);
++		return ret;
++	}
++	return 0;
++}
++
++static void xhci_mtk_ldos_disable(struct xhci_hcd_mtk *mtk)
++{
++	regulator_disable(mtk->vbus);
++	regulator_disable(mtk->vusb33);
++}
++
++static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci)
++{
++	struct usb_hcd *hcd = xhci_to_hcd(xhci);
++	struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
++
++	/*
++	 * As of now platform drivers don't provide MSI support so we ensure
++	 * here that the generic code does not try to make a pci_dev from our
++	 * dev struct in order to setup MSI
++	 */
++	xhci->quirks |= XHCI_PLAT;
++	xhci->quirks |= XHCI_MTK_HOST;
++	/*
++	 * MTK host controller gives a spurious successful event after a
++	 * short transfer. Ignore it.
++	 */
++	xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
++	if (mtk->lpm_support)
++		xhci->quirks |= XHCI_LPM_SUPPORT;
++}
++
++/* called during probe() after chip reset completes */
++static int xhci_mtk_setup(struct usb_hcd *hcd)
++{
++	struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
++	int ret;
++
++	if (usb_hcd_is_primary_hcd(hcd)) {
++		ret = xhci_mtk_ssusb_config(mtk);
++		if (ret)
++			return ret;
++		ret = xhci_mtk_sch_init(mtk);
++		if (ret)
++			return ret;
++	}
++
++	return xhci_gen_setup(hcd, xhci_mtk_quirks);
++}
++
++static int xhci_mtk_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node;
++	struct xhci_hcd_mtk *mtk;
++	const struct hc_driver *driver;
++	struct xhci_hcd *xhci;
++	struct resource *res;
++	struct usb_hcd *hcd;
++	struct phy *phy;
++	int phy_num;
++	int ret = -ENODEV;
++	int irq;
++
++	if (usb_disabled())
++		return -ENODEV;
++
++	driver = &xhci_mtk_hc_driver;
++	mtk = devm_kzalloc(dev, sizeof(*mtk), GFP_KERNEL);
++	if (!mtk)
++		return -ENOMEM;
++
++	mtk->dev = dev;
++	mtk->vbus = devm_regulator_get(dev, "vbus");
++	if (IS_ERR(mtk->vbus)) {
++		dev_err(dev, "fail to get vbus\n");
++		return PTR_ERR(mtk->vbus);
++	}
++
++	mtk->vusb33 = devm_regulator_get(dev, "vusb33");
++	if (IS_ERR(mtk->vusb33)) {
++		dev_err(dev, "fail to get vusb33\n");
++		return PTR_ERR(mtk->vusb33);
++	}
++
++	mtk->sys_clk = devm_clk_get(dev, "sys_ck");
++	if (IS_ERR(mtk->sys_clk)) {
++		dev_err(dev, "fail to get sys_ck\n");
++		return PTR_ERR(mtk->sys_clk);
++	}
++
++	mtk->lpm_support = of_property_read_bool(node, "usb3-lpm-capable");
++
++	ret = usb_wakeup_of_property_parse(mtk, node);
++	if (ret)
++		return ret;
++
++	mtk->num_phys = of_count_phandle_with_args(node,
++			"phys", "#phy-cells");
++	if (mtk->num_phys > 0) {
++		mtk->phys = devm_kcalloc(dev, mtk->num_phys,
++					sizeof(*mtk->phys), GFP_KERNEL);
++		if (!mtk->phys)
++			return -ENOMEM;
++	} else {
++		mtk->num_phys = 0;
++	}
++	pm_runtime_enable(dev);
++	pm_runtime_get_sync(dev);
++	device_enable_async_suspend(dev);
++
++	ret = xhci_mtk_ldos_enable(mtk);
++	if (ret)
++		goto disable_pm;
++
++	ret = xhci_mtk_clks_enable(mtk);
++	if (ret)
++		goto disable_ldos;
++
++	irq = platform_get_irq(pdev, 0);
++	if (irq < 0)
++		goto disable_clk;
++
++	/* Initialize dma_mask and coherent_dma_mask to 32-bits */
++	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
++	if (ret)
++		goto disable_clk;
++
++	if (!dev->dma_mask)
++		dev->dma_mask = &dev->coherent_dma_mask;
++	else
++		dma_set_mask(dev, DMA_BIT_MASK(32));
++
++	hcd = usb_create_hcd(driver, dev, dev_name(dev));
++	if (!hcd) {
++		ret = -ENOMEM;
++		goto disable_clk;
++	}
++
++	/*
++	 * USB 2.0 roothub is stored in the platform_device.
++	 * Swap it with mtk HCD.
++	 */
++	mtk->hcd = platform_get_drvdata(pdev);
++	platform_set_drvdata(pdev, mtk);
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	hcd->regs = devm_ioremap_resource(dev, res);
++	if (IS_ERR(hcd->regs)) {
++		ret = PTR_ERR(hcd->regs);
++		goto put_usb2_hcd;
++	}
++	hcd->rsrc_start = res->start;
++	hcd->rsrc_len = resource_size(res);
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++	mtk->ippc_regs = devm_ioremap_resource(dev, res);
++	if (IS_ERR(mtk->ippc_regs)) {
++		ret = PTR_ERR(mtk->ippc_regs);
++		goto put_usb2_hcd;
++	}
++
++	for (phy_num = 0; phy_num < mtk->num_phys; phy_num++) {
++		phy = devm_of_phy_get_by_index(dev, node, phy_num);
++		if (IS_ERR(phy)) {
++			ret = PTR_ERR(phy);
++			goto put_usb2_hcd;
++		}
++		mtk->phys[phy_num] = phy;
++	}
++
++	ret = xhci_mtk_phy_init(mtk);
++	if (ret)
++		goto put_usb2_hcd;
++
++	ret = xhci_mtk_phy_power_on(mtk);
++	if (ret)
++		goto exit_phys;
++
++	device_init_wakeup(dev, true);
++
++	xhci = hcd_to_xhci(hcd);
++	xhci->main_hcd = hcd;
++	xhci->shared_hcd = usb_create_shared_hcd(driver, dev,
++			dev_name(dev), hcd);
++	if (!xhci->shared_hcd) {
++		ret = -ENOMEM;
++		goto power_off_phys;
++	}
++
++	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
++		xhci->shared_hcd->can_do_streams = 1;
++
++	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
++	if (ret)
++		goto put_usb3_hcd;
++
++	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
++	if (ret)
++		goto dealloc_usb2_hcd;
++
++	return 0;
++
++dealloc_usb2_hcd:
++	usb_remove_hcd(hcd);
++
++put_usb3_hcd:
++	xhci_mtk_sch_exit(mtk);
++	usb_put_hcd(xhci->shared_hcd);
++
++power_off_phys:
++	xhci_mtk_phy_power_off(mtk);
++	device_init_wakeup(dev, false);
++
++exit_phys:
++	xhci_mtk_phy_exit(mtk);
++
++put_usb2_hcd:
++	usb_put_hcd(hcd);
++
++disable_clk:
++	xhci_mtk_clks_disable(mtk);
++
++disable_ldos:
++	xhci_mtk_ldos_disable(mtk);
++
++disable_pm:
++	pm_runtime_put_sync(dev);
++	pm_runtime_disable(dev);
++	return ret;
++}
++
++static int xhci_mtk_remove(struct platform_device *dev)
++{
++	struct xhci_hcd_mtk *mtk = platform_get_drvdata(dev);
++	struct usb_hcd	*hcd = mtk->hcd;
++	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
++
++	usb_remove_hcd(xhci->shared_hcd);
++	xhci_mtk_phy_power_off(mtk);
++	xhci_mtk_phy_exit(mtk);
++	device_init_wakeup(&dev->dev, false);
++
++	usb_remove_hcd(hcd);
++	usb_put_hcd(xhci->shared_hcd);
++	usb_put_hcd(hcd);
++	xhci_mtk_sch_exit(mtk);
++	xhci_mtk_clks_disable(mtk);
++	xhci_mtk_ldos_disable(mtk);
++	pm_runtime_put_sync(&dev->dev);
++	pm_runtime_disable(&dev->dev);
++
++	return 0;
++}
++
++#ifdef CONFIG_PM_SLEEP
++static int xhci_mtk_suspend(struct device *dev)
++{
++	struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev);
++
++	xhci_mtk_host_disable(mtk);
++	xhci_mtk_phy_power_off(mtk);
++	xhci_mtk_clks_disable(mtk);
++	usb_wakeup_enable(mtk);
++	return 0;
++}
++
++static int xhci_mtk_resume(struct device *dev)
++{
++	struct xhci_hcd_mtk *mtk = dev_get_drvdata(dev);
++
++	usb_wakeup_disable(mtk);
++	xhci_mtk_clks_enable(mtk);
++	xhci_mtk_phy_power_on(mtk);
++	xhci_mtk_host_enable(mtk);
++	return 0;
++}
++
++static const struct dev_pm_ops xhci_mtk_pm_ops = {
++	SET_SYSTEM_SLEEP_PM_OPS(xhci_mtk_suspend, xhci_mtk_resume)
++};
++#define DEV_PM_OPS	(&xhci_mtk_pm_ops)
++#else
++#define DEV_PM_OPS	NULL
++#endif /* CONFIG_PM */
++
++#ifdef CONFIG_OF
++static const struct of_device_id mtk_xhci_of_match[] = {
++	{ .compatible = "mediatek,mt8173-xhci"},
++	{ },
++};
++MODULE_DEVICE_TABLE(of, mtk_xhci_of_match);
++#endif
++
++static struct platform_driver mtk_xhci_driver = {
++	.probe	= xhci_mtk_probe,
++	.remove	= xhci_mtk_remove,
++	.driver	= {
++		.name = "xhci-mtk",
++		.pm = DEV_PM_OPS,
++		.of_match_table = of_match_ptr(mtk_xhci_of_match),
++	},
++};
++MODULE_ALIAS("platform:xhci-mtk");
++
++static int __init xhci_mtk_init(void)
++{
++	xhci_init_driver(&xhci_mtk_hc_driver, &xhci_mtk_overrides);
++	return platform_driver_register(&mtk_xhci_driver);
++}
++module_init(xhci_mtk_init);
++
++static void __exit xhci_mtk_exit(void)
++{
++	platform_driver_unregister(&mtk_xhci_driver);
++}
++module_exit(xhci_mtk_exit);
++
++MODULE_AUTHOR("Chunfeng Yun <[email protected]>");
++MODULE_DESCRIPTION("MediaTek xHCI Host Controller Driver");
++MODULE_LICENSE("GPL v2");
+--- /dev/null
++++ b/drivers/usb/host/xhci-mtk.h
+@@ -0,0 +1,162 @@
++/*
++ * Copyright (c) 2015 MediaTek Inc.
++ * Author:
++ *  Zhigang.Wei <[email protected]>
++ *  Chunfeng.Yun <[email protected]>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#ifndef _XHCI_MTK_H_
++#define _XHCI_MTK_H_
++
++#include "xhci.h"
++
++/**
++ * To simplify scheduler algorithm, set a upper limit for ESIT,
++ * if a synchromous ep's ESIT is larger than @XHCI_MTK_MAX_ESIT,
++ * round down to the limit value, that means allocating more
++ * bandwidth to it.
++ */
++#define XHCI_MTK_MAX_ESIT	64
++
++/**
++ * struct mu3h_sch_bw_info: schedule information for bandwidth domain
++ *
++ * @bus_bw: array to keep track of bandwidth already used at each uframes
++ * @bw_ep_list: eps in the bandwidth domain
++ *
++ * treat a HS root port as a bandwidth domain, but treat a SS root port as
++ * two bandwidth domains, one for IN eps and another for OUT eps.
++ */
++struct mu3h_sch_bw_info {
++	u32 bus_bw[XHCI_MTK_MAX_ESIT];
++	struct list_head bw_ep_list;
++};
++
++/**
++ * struct mu3h_sch_ep_info: schedule information for endpoint
++ *
++ * @esit: unit is 125us, equal to 2 << Interval field in ep-context
++ * @num_budget_microframes: number of continuous uframes
++ *		(@repeat==1) scheduled within the interval
++ * @bw_cost_per_microframe: bandwidth cost per microframe
++ * @endpoint: linked into bandwidth domain which it belongs to
++ * @ep: address of usb_host_endpoint struct
++ * @offset: which uframe of the interval that transfer should be
++ *		scheduled first time within the interval
++ * @repeat: the time gap between two uframes that transfers are
++ *		scheduled within a interval. in the simple algorithm, only
++ *		assign 0 or 1 to it; 0 means using only one uframe in a
++ *		interval, and 1 means using @num_budget_microframes
++ *		continuous uframes
++ * @pkts: number of packets to be transferred in the scheduled uframes
++ * @cs_count: number of CS that host will trigger
++ * @burst_mode: burst mode for scheduling. 0: normal burst mode,
++ *		distribute the bMaxBurst+1 packets for a single burst
++ *		according to @pkts and @repeat, repeate the burst multiple
++ *		times; 1: distribute the (bMaxBurst+1)*(Mult+1) packets
++ *		according to @pkts and @repeat. normal mode is used by
++ *		default
++ */
++struct mu3h_sch_ep_info {
++	u32 esit;
++	u32 num_budget_microframes;
++	u32 bw_cost_per_microframe;
++	struct list_head endpoint;
++	void *ep;
++	/*
++	 * mtk xHCI scheduling information put into reserved DWs
++	 * in ep context
++	 */
++	u32 offset;
++	u32 repeat;
++	u32 pkts;
++	u32 cs_count;
++	u32 burst_mode;
++};
++
++#define MU3C_U3_PORT_MAX 4
++#define MU3C_U2_PORT_MAX 5
++
++/**
++ * struct mu3c_ippc_regs: MTK ssusb ip port control registers
++ * @ip_pw_ctr0~3: ip power and clock control registers
++ * @ip_pw_sts1~2: ip power and clock status registers
++ * @ip_xhci_cap: ip xHCI capability register
++ * @u3_ctrl_p[x]: ip usb3 port x control register, only low 4bytes are used
++ * @u2_ctrl_p[x]: ip usb2 port x control register, only low 4bytes are used
++ * @u2_phy_pll: usb2 phy pll control register
++ */
++struct mu3c_ippc_regs {
++	__le32 ip_pw_ctr0;
++	__le32 ip_pw_ctr1;
++	__le32 ip_pw_ctr2;
++	__le32 ip_pw_ctr3;
++	__le32 ip_pw_sts1;
++	__le32 ip_pw_sts2;
++	__le32 reserved0[3];
++	__le32 ip_xhci_cap;
++	__le32 reserved1[2];
++	__le64 u3_ctrl_p[MU3C_U3_PORT_MAX];
++	__le64 u2_ctrl_p[MU3C_U2_PORT_MAX];
++	__le32 reserved2;
++	__le32 u2_phy_pll;
++	__le32 reserved3[33]; /* 0x80 ~ 0xff */
++};
++
++struct xhci_hcd_mtk {
++	struct device *dev;
++	struct usb_hcd *hcd;
++	struct mu3h_sch_bw_info *sch_array;
++	struct mu3c_ippc_regs __iomem *ippc_regs;
++	int num_u2_ports;
++	int num_u3_ports;
++	struct regulator *vusb33;
++	struct regulator *vbus;
++	struct clk *sys_clk;	/* sys and mac clock */
++	struct clk *wk_deb_p0;	/* port0's wakeup debounce clock */
++	struct clk *wk_deb_p1;
++	struct regmap *pericfg;
++	struct phy **phys;
++	int num_phys;
++	int wakeup_src;
++	bool lpm_support;
++};
++
++static inline struct xhci_hcd_mtk *hcd_to_mtk(struct usb_hcd *hcd)
++{
++	return dev_get_drvdata(hcd->self.controller);
++}
++
++#if IS_ENABLED(CONFIG_USB_XHCI_MTK)
++int xhci_mtk_sch_init(struct xhci_hcd_mtk *mtk);
++void xhci_mtk_sch_exit(struct xhci_hcd_mtk *mtk);
++int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
++		struct usb_host_endpoint *ep);
++void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd, struct usb_device *udev,
++		struct usb_host_endpoint *ep);
++
++#else
++static inline int xhci_mtk_add_ep_quirk(struct usb_hcd *hcd,
++	struct usb_device *udev, struct usb_host_endpoint *ep)
++{
++	return 0;
++}
++
++static inline void xhci_mtk_drop_ep_quirk(struct usb_hcd *hcd,
++	struct usb_device *udev, struct usb_host_endpoint *ep)
++{
++}
++
++#endif
++
++#endif		/* _XHCI_MTK_H_ */
+--- a/drivers/usb/host/xhci-ring.c
++++ b/drivers/usb/host/xhci-ring.c
+@@ -68,6 +68,7 @@
+ #include <linux/slab.h>
+ #include "xhci.h"
+ #include "xhci-trace.h"
++#include "xhci-mtk.h"
+ 
+ /*
+  * Returns zero if the TRB isn't in this segment, otherwise it returns the DMA
+@@ -3065,17 +3066,22 @@ static u32 xhci_td_remainder(struct xhci
+ {
+ 	u32 maxp, total_packet_count;
+ 
+-	if (xhci->hci_version < 0x100)
++	/* MTK xHCI is mostly 0.97 but contains some features from 1.0 */
++	if (xhci->hci_version < 0x100 && !(xhci->quirks & XHCI_MTK_HOST))
+ 		return ((td_total_len - transferred) >> 10);
+ 
+-	maxp = GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
+-	total_packet_count = DIV_ROUND_UP(td_total_len, maxp);
+-
+ 	/* One TRB with a zero-length data packet. */
+ 	if (num_trbs_left == 0 || (transferred == 0 && trb_buff_len == 0) ||
+ 	    trb_buff_len == td_total_len)
+ 		return 0;
+ 
++	/* for MTK xHCI, TD size doesn't include this TRB */
++	if (xhci->quirks & XHCI_MTK_HOST)
++		trb_buff_len = 0;
++
++	maxp = GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
++	total_packet_count = DIV_ROUND_UP(td_total_len, maxp);
++
+ 	/* Queueing functions don't count the current TRB into transferred */
+ 	return (total_packet_count - ((transferred + trb_buff_len) / maxp));
+ }
+@@ -3463,7 +3469,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *
+ 		field |= 0x1;
+ 
+ 	/* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+-	if (xhci->hci_version >= 0x100) {
++	if ((xhci->hci_version >= 0x100) || (xhci->quirks & XHCI_MTK_HOST)) {
+ 		if (urb->transfer_buffer_length > 0) {
+ 			if (setup->bRequestType & USB_DIR_IN)
+ 				field |= TRB_TX_TYPE(TRB_DATA_IN);
+--- a/drivers/usb/host/xhci.c
++++ b/drivers/usb/host/xhci.c
+@@ -31,6 +31,7 @@
+ 
+ #include "xhci.h"
+ #include "xhci-trace.h"
++#include "xhci-mtk.h"
+ 
+ #define DRIVER_AUTHOR "Sarah Sharp"
+ #define DRIVER_DESC "'eXtensible' Host Controller (xHC) Driver"
+@@ -634,7 +635,11 @@ int xhci_run(struct usb_hcd *hcd)
+ 			"// Set the interrupt modulation register");
+ 	temp = readl(&xhci->ir_set->irq_control);
+ 	temp &= ~ER_IRQ_INTERVAL_MASK;
+-	temp |= (u32) 160;
++	/*
++	 * the increment interval is 8 times as much as that defined
++	 * in xHCI spec on MTK's controller
++	 */
++	temp |= (u32) ((xhci->quirks & XHCI_MTK_HOST) ? 20 : 160);
+ 	writel(temp, &xhci->ir_set->irq_control);
+ 
+ 	/* Set the HCD state before we enable the irqs */
+@@ -1700,6 +1705,9 @@ int xhci_drop_endpoint(struct usb_hcd *h
+ 
+ 	xhci_endpoint_zero(xhci, xhci->devs[udev->slot_id], ep);
+ 
++	if (xhci->quirks & XHCI_MTK_HOST)
++		xhci_mtk_drop_ep_quirk(hcd, udev, ep);
++
+ 	xhci_dbg(xhci, "drop ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x\n",
+ 			(unsigned int) ep->desc.bEndpointAddress,
+ 			udev->slot_id,
+@@ -1795,6 +1803,15 @@ int xhci_add_endpoint(struct usb_hcd *hc
+ 		return -ENOMEM;
+ 	}
+ 
++	if (xhci->quirks & XHCI_MTK_HOST) {
++		ret = xhci_mtk_add_ep_quirk(hcd, udev, ep);
++		if (ret < 0) {
++			xhci_free_or_cache_endpoint_ring(xhci,
++				virt_dev, ep_index);
++			return ret;
++		}
++	}
++
+ 	ctrl_ctx->add_flags |= cpu_to_le32(added_ctxs);
+ 	new_add_flags = le32_to_cpu(ctrl_ctx->add_flags);
+ 
+--- a/drivers/usb/host/xhci.h
++++ b/drivers/usb/host/xhci.h
+@@ -1630,6 +1630,7 @@ struct xhci_hcd {
+ /* For controllers with a broken beyond repair streams implementation */
+ #define XHCI_BROKEN_STREAMS	(1 << 19)
+ #define XHCI_PME_STUCK_QUIRK	(1 << 20)
++#define XHCI_MTK_HOST		(1 << 21)
+ 	unsigned int		num_active_eps;
+ 	unsigned int		limit_active_eps;
+ 	/* There are two roothubs to keep track of bus suspend info for */

target/linux/ramips/patches-4.4/0034-NET-multi-phy-support.patch

@@ -0,0 +1,53 @@
+From 0b6eb1e68290243d439ee330ea8d0b239a5aec69 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:38:50 +0100
+Subject: [PATCH 34/53] NET: multi phy support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/phy/phy.c |    9 ++++++---
+ include/linux/phy.h   |    1 +
+ 2 files changed, 7 insertions(+), 3 deletions(-)
+
+--- a/drivers/net/phy/phy.c
++++ b/drivers/net/phy/phy.c
+@@ -888,7 +888,8 @@ void phy_state_machine(struct work_struc
+ 		/* If the link is down, give up on negotiation for now */
+ 		if (!phydev->link) {
+ 			phydev->state = PHY_NOLINK;
+-			netif_carrier_off(phydev->attached_dev);
++			if (!phydev->no_auto_carrier_off)
++				netif_carrier_off(phydev->attached_dev);
+ 			phydev->adjust_link(phydev->attached_dev);
+ 			break;
+ 		}
+@@ -971,7 +972,8 @@ void phy_state_machine(struct work_struc
+ 			netif_carrier_on(phydev->attached_dev);
+ 		} else {
+ 			phydev->state = PHY_NOLINK;
+-			netif_carrier_off(phydev->attached_dev);
++			if (!phydev->no_auto_carrier_off)
++				netif_carrier_off(phydev->attached_dev);
+ 		}
+ 
+ 		phydev->adjust_link(phydev->attached_dev);
+@@ -983,7 +985,8 @@ void phy_state_machine(struct work_struc
+ 	case PHY_HALTED:
+ 		if (phydev->link) {
+ 			phydev->link = 0;
+-			netif_carrier_off(phydev->attached_dev);
++			if (!phydev->no_auto_carrier_off)
++				netif_carrier_off(phydev->attached_dev);
+ 			phydev->adjust_link(phydev->attached_dev);
+ 			do_suspend = true;
+ 		}
+--- a/include/linux/phy.h
++++ b/include/linux/phy.h
+@@ -377,6 +377,7 @@ struct phy_device {
+ 	bool is_pseudo_fixed_link;
+ 	bool has_fixups;
+ 	bool suspended;
++	bool no_auto_carrier_off;
+ 
+ 	enum phy_state state;
+ 

target/linux/ramips/patches-4.4/0036-mtd-fix-cfi-cmdset-0002-erase-status-check.patch

@@ -0,0 +1,29 @@
+From 8e72a3a1be8f6328bd7ef491332ba541547b6086 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 15 Jul 2013 00:38:51 +0200
+Subject: [PATCH 36/53] mtd: fix cfi cmdset 0002 erase status check
+
+---
+ drivers/mtd/chips/cfi_cmdset_0002.c |    4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -2291,7 +2291,7 @@ static int __xipram do_erase_chip(struct
+ 			chip->erase_suspended = 0;
+ 		}
+ 
+-		if (chip_ready(map, adr))
++		if (chip_good(map, adr, map_word_ff(map)))
+ 			break;
+ 
+ 		if (time_after(jiffies, timeo)) {
+@@ -2380,7 +2380,7 @@ static int __xipram do_erase_oneblock(st
+ 			chip->erase_suspended = 0;
+ 		}
+ 
+-		if (chip_ready(map, adr)) {
++		if (chip_good(map, adr, map_word_ff(map))) {
+ 			xip_enable(map, chip, adr);
+ 			break;
+ 		}

target/linux/ramips/patches-4.4/0037-mtd-cfi-cmdset-0002-force-word-write.patch

@@ -0,0 +1,70 @@
+From ee9081b2726a5ca8cde5497afdc5425e21ff8f8b Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 15 Jul 2013 00:39:21 +0200
+Subject: [PATCH 37/53] mtd: cfi cmdset 0002 force word write
+
+---
+ drivers/mtd/chips/cfi_cmdset_0002.c |    9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -40,7 +40,7 @@
+ #include <linux/mtd/xip.h>
+ 
+ #define AMD_BOOTLOC_BUG
+-#define FORCE_WORD_WRITE 0
++#define FORCE_WORD_WRITE 1
+ 
+ #define MAX_WORD_RETRIES 3
+ 
+@@ -51,7 +51,9 @@
+ 
+ static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+ static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
++#if !FORCE_WORD_WRITE
+ static int cfi_amdstd_write_buffers(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
++#endif
+ static int cfi_amdstd_erase_chip(struct mtd_info *, struct erase_info *);
+ static int cfi_amdstd_erase_varsize(struct mtd_info *, struct erase_info *);
+ static void cfi_amdstd_sync (struct mtd_info *);
+@@ -202,6 +204,7 @@ static void fixup_amd_bootblock(struct m
+ }
+ #endif
+ 
++#if !FORCE_WORD_WRITE
+ static void fixup_use_write_buffers(struct mtd_info *mtd)
+ {
+ 	struct map_info *map = mtd->priv;
+@@ -211,6 +214,7 @@ static void fixup_use_write_buffers(stru
+ 		mtd->_write = cfi_amdstd_write_buffers;
+ 	}
+ }
++#endif /* !FORCE_WORD_WRITE */
+ 
+ /* Atmel chips don't use the same PRI format as AMD chips */
+ static void fixup_convert_atmel_pri(struct mtd_info *mtd)
+@@ -1789,6 +1793,7 @@ static int cfi_amdstd_write_words(struct
+ /*
+  * FIXME: interleaved mode not tested, and probably not supported!
+  */
++#if !FORCE_WORD_WRITE
+ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
+ 				    unsigned long adr, const u_char *buf,
+ 				    int len)
+@@ -1917,7 +1922,6 @@ static int __xipram do_write_buffer(stru
+ 	return ret;
+ }
+ 
+-
+ static int cfi_amdstd_write_buffers(struct mtd_info *mtd, loff_t to, size_t len,
+ 				    size_t *retlen, const u_char *buf)
+ {
+@@ -1992,6 +1996,7 @@ static int cfi_amdstd_write_buffers(stru
+ 
+ 	return 0;
+ }
++#endif /* !FORCE_WORD_WRITE */
+ 
+ /*
+  * Wait for the flash chip to become ready to write data

target/linux/ramips/patches-4.4/0038-mtd-ralink-add-mt7620-nand-driver.patch

@@ -0,0 +1,2408 @@
+From fb6e1578cd73d7d81f675e75247a676423f32412 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 17 Nov 2013 17:41:46 +0100
+Subject: [PATCH 38/53] mtd: ralink: add mt7620 nand driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mtd/maps/Kconfig       |    4 +
+ drivers/mtd/maps/Makefile      |    2 +
+ drivers/mtd/maps/ralink_nand.c | 2136 ++++++++++++++++++++++++++++++++++++++++
+ drivers/mtd/maps/ralink_nand.h |  232 +++++
+ 4 files changed, 2374 insertions(+)
+ create mode 100644 drivers/mtd/maps/ralink_nand.c
+ create mode 100644 drivers/mtd/maps/ralink_nand.h
+
+--- a/drivers/mtd/maps/Kconfig
++++ b/drivers/mtd/maps/Kconfig
+@@ -399,4 +399,8 @@ config MTD_LATCH_ADDR
+ 
+           If compiled as a module, it will be called latch-addr-flash.
+ 
++config MTD_NAND_MT7620
++	tristate "Support for NAND on Mediatek MT7620"
++	depends on RALINK && SOC_MT7620
++
+ endmenu
+--- a/drivers/mtd/maps/Makefile
++++ b/drivers/mtd/maps/Makefile
+@@ -43,3 +43,5 @@ obj-$(CONFIG_MTD_VMU)		+= vmu-flash.o
+ obj-$(CONFIG_MTD_GPIO_ADDR)	+= gpio-addr-flash.o
+ obj-$(CONFIG_MTD_LATCH_ADDR)	+= latch-addr-flash.o
+ obj-$(CONFIG_MTD_LANTIQ)	+= lantiq-flash.o
++obj-$(CONFIG_MTD_NAND_MT7620)	+= ralink_nand.o
++
+--- /dev/null
++++ b/drivers/mtd/maps/ralink_nand.c
+@@ -0,0 +1,2136 @@
++#define DEBUG
++#include <linux/device.h>
++#undef DEBUG
++#include <linux/slab.h>
++#include <linux/mtd/mtd.h>
++#include <linux/delay.h>
++#include <linux/module.h>
++#include <linux/interrupt.h>
++#include <linux/dma-mapping.h>
++#include <linux/mtd/partitions.h>
++#include <asm/io.h>
++#include <linux/delay.h>
++#include <linux/sched.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++
++#include "ralink_nand.h"
++#ifdef RANDOM_GEN_BAD_BLOCK
++#include <linux/random.h>
++#endif
++
++#define LARGE_MTD_BOOT_PART_SIZE       (CFG_BLOCKSIZE<<2)
++#define LARGE_MTD_CONFIG_PART_SIZE     (CFG_BLOCKSIZE<<2)
++#define LARGE_MTD_FACTORY_PART_SIZE    (CFG_BLOCKSIZE<<1)
++
++
++#define BLOCK_ALIGNED(a) ((a) & (CFG_BLOCKSIZE - 1))
++
++#define READ_STATUS_RETRY	1000
++
++struct mtd_info *ranfc_mtd = NULL;
++
++int skipbbt = 0;
++int ranfc_debug = 1;
++static int ranfc_bbt = 1;
++#if defined (WORKAROUND_RX_BUF_OV)
++static int ranfc_verify = 1;
++#endif
++static u32 nand_addrlen;
++
++#if 0
++module_param(ranfc_debug, int, 0644);
++module_param(ranfc_bbt, int, 0644);
++module_param(ranfc_verify, int, 0644);
++#endif
++
++#if 0
++#define ra_dbg(args...) do { if (ranfc_debug) printk(args); } while(0)
++#else
++#define ra_dbg(args...)
++#endif
++
++#define CLEAR_INT_STATUS()	ra_outl(NFC_INT_ST, ra_inl(NFC_INT_ST))
++#define NFC_TRANS_DONE()	(ra_inl(NFC_INT_ST) & INT_ST_ND_DONE)
++
++int is_nand_page_2048 = 0;
++const unsigned int nand_size_map[2][3] = {{25, 30, 30}, {20, 27, 30}};
++
++static int nfc_wait_ready(int snooze_ms);
++
++static const char * const mtk_probe_types[] = { "cmdlinepart", "ofpart", NULL };
++
++/**
++ * reset nand chip
++ */
++static int nfc_chip_reset(void)
++{
++	int status;
++
++	//ra_dbg("%s:\n", __func__);
++
++	// reset nand flash
++	ra_outl(NFC_CMD1, 0x0);
++	ra_outl(NFC_CMD2, 0xff);
++	ra_outl(NFC_ADDR, 0x0);
++	ra_outl(NFC_CONF, 0x0411);
++
++	status = nfc_wait_ready(5);  //erase wait 5us
++	if (status & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++	}
++	
++	return (int)(status & NAND_STATUS_FAIL);
++
++}
++
++
++
++/** 
++ * clear NFC and flash chip.
++ */
++static int nfc_all_reset(void)
++{
++	int retry;
++
++	ra_dbg("%s: \n", __func__);
++
++	// reset controller
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer
++
++	CLEAR_INT_STATUS();
++
++	retry = READ_STATUS_RETRY;
++	while ((ra_inl(NFC_INT_ST) & 0x02) != 0x02 && retry--);
++	if (retry <= 0) {
++		printk("nfc_all_reset: clean buffer fail \n");
++		return -1;
++	}
++
++	retry = READ_STATUS_RETRY;
++	while ((ra_inl(NFC_STATUS) & 0x1) != 0x0 && retry--) { //fixme, controller is busy ?
++		udelay(1);
++	}
++
++	nfc_chip_reset();
++
++	return 0;
++}
++
++/** NOTICE: only called by nfc_wait_ready().
++ * @return -1, nfc can not get transction done 
++ * @return 0, ok.
++ */
++static int _nfc_read_status(char *status)
++{
++	unsigned long cmd1, conf;
++	int int_st, nfc_st;
++	int retry;
++
++	cmd1 = 0x70;
++	conf = 0x000101 | (1 << 20);
++
++	//fixme, should we check nfc status?
++	CLEAR_INT_STATUS();
++
++	ra_outl(NFC_CMD1, cmd1); 	
++	ra_outl(NFC_CONF, conf); 
++
++	/* FIXME, 
++	 * 1. since we have no wired ready signal, directly 
++	 * calling this function is not gurantee to read right status under ready state.
++	 * 2. the other side, we can not determine how long to become ready, this timeout retry is nonsense.
++	 * 3. SUGGESTION: call nfc_read_status() from nfc_wait_ready(),
++	 * that is aware about caller (in sementics) and has snooze plused nfc ND_DONE.
++	 */
++	retry = READ_STATUS_RETRY; 
++	do {
++		nfc_st = ra_inl(NFC_STATUS);
++		int_st = ra_inl(NFC_INT_ST);
++		
++		ndelay(10);
++	} while (!(int_st & INT_ST_RX_BUF_RDY) && retry--);
++
++	if (!(int_st & INT_ST_RX_BUF_RDY)) {
++		printk("nfc_read_status: NFC fail, int_st(%x), retry:%x. nfc:%x, reset nfc and flash. \n", 
++		       int_st, retry, nfc_st);
++		nfc_all_reset();
++		*status = NAND_STATUS_FAIL;
++		return -1;
++	}
++
++	*status = (char)(le32_to_cpu(ra_inl(NFC_DATA)) & 0x0ff);
++	return 0;
++}
++
++/**
++ * @return !0, chip protect.
++ * @return 0, chip not protected.
++ */
++static int nfc_check_wp(void)
++{
++	/* Check the WP bit */
++#if !defined CONFIG_NOT_SUPPORT_WP
++	return !!(ra_inl(NFC_CTRL) & 0x01);
++#else
++	char result = 0;
++	int ret;
++
++	ret = _nfc_read_status(&result);
++	//FIXME, if ret < 0
++
++	return !(result & NAND_STATUS_WP);
++#endif
++}
++
++#if !defined CONFIG_NOT_SUPPORT_RB
++/*
++ * @return !0, chip ready.
++ * @return 0, chip busy.
++ */
++static int nfc_device_ready(void)
++{
++	/* Check the ready  */
++	return !!(ra_inl(NFC_STATUS) & 0x04);
++}
++#endif
++
++
++/**
++ * generic function to get data from flash.
++ * @return data length reading from flash.
++ */
++static int _ra_nand_pull_data(char *buf, int len, int use_gdma)
++{
++#ifdef RW_DATA_BY_BYTE
++	char *p = buf;
++#else
++	__u32 *p = (__u32 *)buf;
++#endif
++	int retry, int_st;
++	unsigned int ret_data;
++	int ret_size;
++
++	// receive data by use_gdma 
++	if (use_gdma) { 
++		//if (_ra_nand_dma_pull((unsigned long)p, len)) {
++		if (1) {
++			printk("%s: fail \n", __func__);
++			len = -1; //return error
++		}
++
++		return len;
++	}
++
++	//fixme: retry count size?
++	retry = READ_STATUS_RETRY;
++	// no gdma
++	while (len > 0) {
++		int_st = ra_inl(NFC_INT_ST);
++		if (int_st & INT_ST_RX_BUF_RDY) {
++
++			ret_data = ra_inl(NFC_DATA);
++			ra_outl(NFC_INT_ST, INT_ST_RX_BUF_RDY); 
++#ifdef RW_DATA_BY_BYTE
++			ret_size = sizeof(unsigned int);
++			ret_size = min(ret_size, len);
++			len -= ret_size;
++			while (ret_size-- > 0) {
++				//nfc is little endian 
++				*p++ = ret_data & 0x0ff;
++				ret_data >>= 8; 
++			}
++#else
++			ret_size = min(len, 4);
++			len -= ret_size;
++			if (ret_size == 4)
++				*p++ = ret_data;
++			else {
++				__u8 *q = (__u8 *)p;
++				while (ret_size-- > 0) {
++					*q++ = ret_data & 0x0ff;
++					ret_data >>= 8; 
++				}
++				p = (__u32 *)q;
++			}
++#endif
++			retry = READ_STATUS_RETRY;
++		}
++		else if (int_st & INT_ST_ND_DONE) {
++			break;
++		}
++		else {
++			udelay(1);
++			if (retry-- < 0) 
++				break;
++		}
++	}
++
++#ifdef RW_DATA_BY_BYTE
++	return (int)(p - buf);
++#else
++	return ((int)p - (int)buf);
++#endif
++}
++
++/**
++ * generic function to put data into flash.
++ * @return data length writing into flash.
++ */
++static int _ra_nand_push_data(char *buf, int len, int use_gdma)
++{
++#ifdef RW_DATA_BY_BYTE
++	char *p = buf;
++#else
++	__u32 *p = (__u32 *)buf;
++#endif
++	int retry, int_st;
++	unsigned int tx_data = 0;
++	int tx_size, iter = 0;
++
++	// receive data by use_gdma 
++	if (use_gdma) { 
++		//if (_ra_nand_dma_push((unsigned long)p, len))
++		if (1)
++			len = 0;		
++		printk("%s: fail \n", __func__);
++		return len;
++	}
++
++	// no gdma
++	retry = READ_STATUS_RETRY;
++	while (len > 0) {
++		int_st = ra_inl(NFC_INT_ST);
++		if (int_st & INT_ST_TX_BUF_RDY) {
++#ifdef RW_DATA_BY_BYTE
++			tx_size = min(len, (int)sizeof(unsigned long));
++			for (iter = 0; iter < tx_size; iter++) {
++				tx_data |= (*p++ << (8*iter));
++			}
++#else
++			tx_size = min(len, 4);
++			if (tx_size == 4)
++				tx_data = (*p++);
++			else {
++				__u8 *q = (__u8 *)p;
++				for (iter = 0; iter < tx_size; iter++)
++					tx_data |= (*q++ << (8*iter));
++				p = (__u32 *)q;
++			}
++#endif
++			ra_outl(NFC_INT_ST, INT_ST_TX_BUF_RDY);
++			ra_outl(NFC_DATA, tx_data);
++			len -= tx_size;
++			retry = READ_STATUS_RETRY;
++		}
++		else if (int_st & INT_ST_ND_DONE) {
++			break;
++		}
++		else {
++			udelay(1);
++			if (retry-- < 0) {
++				ra_dbg("%s p:%p buf:%p \n", __func__, p, buf);
++				break;
++			}
++		}
++	}
++
++	
++#ifdef RW_DATA_BY_BYTE
++	return (int)(p - buf);
++#else
++	return ((int)p - (int)buf);
++#endif
++
++}
++
++static int nfc_select_chip(struct ra_nand_chip *ra, int chipnr)
++{
++#if (CONFIG_NUMCHIPS == 1)
++	if (!(chipnr < CONFIG_NUMCHIPS))
++		return -1;
++	return 0;
++#else
++	BUG();
++#endif
++}
++
++/** @return -1: chip_select fail
++ *	    0 : both CE and WP==0 are OK
++ * 	    1 : CE OK and WP==1
++ */
++static int nfc_enable_chip(struct ra_nand_chip *ra, unsigned int offs, int read_only)
++{
++	int chipnr = offs >> ra->chip_shift;
++
++	ra_dbg("%s: offs:%x read_only:%x \n", __func__, offs, read_only);
++
++	chipnr = nfc_select_chip(ra, chipnr);
++	if (chipnr < 0) {
++		printk("%s: chip select error, offs(%x)\n", __func__, offs);
++		return -1;
++	}
++
++	if (!read_only)
++		return nfc_check_wp();
++	
++	return 0;
++}
++
++/** wait nand chip becomeing ready and return queried status.
++ * @param snooze: sleep time in ms unit before polling device ready.
++ * @return status of nand chip
++ * @return NAN_STATUS_FAIL if something unexpected.
++ */
++static int nfc_wait_ready(int snooze_ms)
++{
++	int retry;
++	char status;
++
++	// wait nfc idle,
++	if (snooze_ms == 0)
++		snooze_ms = 1;
++	else
++		schedule_timeout(snooze_ms * HZ / 1000);
++	
++	snooze_ms = retry = snooze_ms *1000000 / 100 ;  // ndelay(100)
++
++	while (!NFC_TRANS_DONE() && retry--) {
++		if (!cond_resched())
++			ndelay(100);
++	}
++	
++	if (!NFC_TRANS_DONE()) {
++		printk("nfc_wait_ready: no transaction done \n");
++		return NAND_STATUS_FAIL;
++	}
++
++#if !defined (CONFIG_NOT_SUPPORT_RB)
++	//fixme
++	while(!(status = nfc_device_ready()) && retry--) {
++		ndelay(100);
++	}
++
++	if (status == 0) {
++		printk("nfc_wait_ready: no device ready. \n");	
++		return NAND_STATUS_FAIL;
++	}
++
++	_nfc_read_status(&status);
++	return status;
++#else
++
++	while(retry--) {
++		_nfc_read_status(&status);
++		if (status & NAND_STATUS_READY)
++			break;
++		ndelay(100);
++	}
++	if (retry<0)
++		printk("nfc_wait_ready 2: no device ready, status(%x). \n", status);	
++
++	return status;
++#endif
++}
++
++/**
++ * return 0: erase OK
++ * return -EIO: fail 
++ */
++int nfc_erase_block(struct ra_nand_chip *ra, int row_addr)
++{
++	unsigned long cmd1, cmd2, bus_addr, conf;
++	char status;
++
++	cmd1 = 0x60;
++	cmd2 = 0xd0;
++	bus_addr = row_addr;
++	conf = 0x00511 | ((CFG_ROW_ADDR_CYCLE)<<16);
++
++	// set NFC
++	ra_dbg("%s: cmd1: %lx, cmd2:%lx bus_addr: %lx, conf: %lx \n", 
++	       __func__, cmd1, cmd2, bus_addr, conf);
++
++	//fixme, should we check nfc status?
++	CLEAR_INT_STATUS();
++
++	ra_outl(NFC_CMD1, cmd1); 	
++	ra_outl(NFC_CMD2, cmd2);
++	ra_outl(NFC_ADDR, bus_addr);
++	ra_outl(NFC_CONF, conf); 
++
++	status = nfc_wait_ready(3);  //erase wait 3ms 
++	if (status & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++		return -EIO;
++	}
++	
++	return 0;
++
++}
++
++static inline int _nfc_read_raw_data(int cmd1, int cmd2, int bus_addr, int bus_addr2, int conf, char *buf, int len, int flags)
++{
++	int ret;
++
++	CLEAR_INT_STATUS();
++	ra_outl(NFC_CMD1, cmd1); 	
++	ra_outl(NFC_CMD2, cmd2);
++	ra_outl(NFC_ADDR, bus_addr);
++#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \
++    defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)	
++	ra_outl(NFC_ADDR2, bus_addr2);
++#endif	
++	ra_outl(NFC_CONF, conf); 
++
++	ret = _ra_nand_pull_data(buf, len, 0);
++	if (ret != len) {
++		ra_dbg("%s: ret:%x (%x) \n", __func__, ret, len);
++		return NAND_STATUS_FAIL;
++	}
++
++	//FIXME, this section is not necessary
++	ret = nfc_wait_ready(0); //wait ready 
++	/* to prevent the DATA FIFO 's old data from next operation */
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer
++
++	if (ret & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++		return NAND_STATUS_FAIL;
++	}
++
++	return 0;
++}
++
++static inline int _nfc_write_raw_data(int cmd1, int cmd3, int bus_addr, int bus_addr2, int conf, char *buf, int len, int flags)
++{
++	int ret;
++
++	CLEAR_INT_STATUS();
++	ra_outl(NFC_CMD1, cmd1); 	
++	ra_outl(NFC_CMD3, cmd3); 	
++	ra_outl(NFC_ADDR, bus_addr);
++#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \
++    defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)	
++	ra_outl(NFC_ADDR2, bus_addr2);
++#endif	
++	ra_outl(NFC_CONF, conf); 
++
++	ret = _ra_nand_push_data(buf, len, 0);
++	if (ret != len) {
++		ra_dbg("%s: ret:%x (%x) \n", __func__, ret, len);
++		return NAND_STATUS_FAIL;
++	}
++
++	ret = nfc_wait_ready(1); //write wait 1ms
++	/* to prevent the DATA FIFO 's old data from next operation */
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x02); //clear data buffer
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) & ~0x02); //clear data buffer
++
++	if (ret & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++		return NAND_STATUS_FAIL;
++	}
++
++	return 0;
++}
++
++/**
++ * @return !0: fail
++ * @return 0: OK
++ */
++int nfc_read_oob(struct ra_nand_chip *ra, int page, unsigned int offs, char *buf, int len, int flags)
++{
++	unsigned int cmd1 = 0, cmd2 = 0, conf = 0;
++	unsigned int bus_addr = 0, bus_addr2 = 0;
++	unsigned int ecc_en;
++	int use_gdma;
++	int status;
++
++	int pages_perblock = 1<<(ra->erase_shift - ra->page_shift);
++	// constrain of nfc read function 
++
++#if defined (WORKAROUND_RX_BUF_OV)
++	BUG_ON (len > 60); 	//problem of rx-buffer overrun 
++#endif
++	BUG_ON (offs >> ra->oob_shift); //page boundry
++	BUG_ON ((unsigned int)(((offs + len) >> ra->oob_shift) + page) >
++		((page + pages_perblock) & ~(pages_perblock-1))); //block boundry
++
++	use_gdma = flags & FLAG_USE_GDMA;
++	ecc_en = flags & FLAG_ECC_EN;
++	bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8) - 1));
++
++	if (is_nand_page_2048) {
++		bus_addr += CFG_PAGESIZE;
++		bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8);
++		cmd1 = 0x0;
++		cmd2 = 0x30;
++		conf = 0x000511| ((CFG_ADDR_CYCLE)<<16) | (len << 20); 
++	}
++	else {
++		cmd1 = 0x50;
++		conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); 
++	}
++	if (ecc_en) 
++		conf |= (1<<3); 
++	if (use_gdma)
++		conf |= (1<<2);
++
++	ra_dbg("%s: cmd1:%x, bus_addr:%x, conf:%x, len:%x, flag:%x\n",
++	       __func__, cmd1, bus_addr, conf, len, flags);
++
++	status = _nfc_read_raw_data(cmd1, cmd2, bus_addr, bus_addr2, conf, buf, len, flags);
++	if (status & NAND_STATUS_FAIL) {
++		printk("%s: fail\n", __func__);
++		return -EIO;
++	}
++
++	return 0; 
++}
++
++/**
++ * @return !0: fail
++ * @return 0: OK
++ */
++int nfc_write_oob(struct ra_nand_chip *ra, int page, unsigned int offs, char *buf, int len, int flags)
++{
++	unsigned int cmd1 = 0, cmd3=0, conf = 0;
++	unsigned int bus_addr = 0, bus_addr2 = 0;
++	int use_gdma;
++	int status;
++
++	int pages_perblock = 1<<(ra->erase_shift - ra->page_shift);
++	// constrain of nfc read function 
++
++	BUG_ON (offs >> ra->oob_shift); //page boundry
++	BUG_ON ((unsigned int)(((offs + len) >> ra->oob_shift) + page) >
++		((page + pages_perblock) & ~(pages_perblock-1))); //block boundry 
++
++	use_gdma = flags & FLAG_USE_GDMA;
++	bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8) - 1));
++
++	if (is_nand_page_2048) {
++		cmd1 = 0x80;
++		cmd3 = 0x10;
++		bus_addr += CFG_PAGESIZE;
++		bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8);
++		conf = 0x001123 | ((CFG_ADDR_CYCLE)<<16) | ((len) << 20);
++	}
++	else {
++		cmd1 = 0x08050;
++		cmd3 = 0x10;
++		conf = 0x001223 | ((CFG_ADDR_CYCLE)<<16) | ((len) << 20); 
++	}
++	if (use_gdma)
++		conf |= (1<<2);
++
++	// set NFC
++	ra_dbg("%s: cmd1: %x, cmd3: %x bus_addr: %x, conf: %x, len:%x\n", 
++	       __func__, cmd1, cmd3, bus_addr, conf, len);
++
++	status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, len, flags);
++	if (status & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++		return -EIO;
++	}
++
++	return 0; 
++}
++
++
++int nfc_read_page(struct ra_nand_chip *ra, char *buf, int page, int flags);
++int nfc_write_page(struct ra_nand_chip *ra, char *buf, int page, int flags);
++
++
++#if !defined (WORKAROUND_RX_BUF_OV)	
++static int one_bit_correction(char *ecc, char *expected, int *bytes, int *bits);
++int nfc_ecc_verify(struct ra_nand_chip *ra, char *buf, int page, int mode)
++{
++	int ret, i;
++	char *p, *e;
++	int ecc;
++	
++	//ra_dbg("%s, page:%x mode:%d\n", __func__, page, mode);
++
++	if (mode == FL_WRITING) {
++		int len = CFG_PAGESIZE + CFG_PAGE_OOBSIZE;
++		int conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); 
++		conf |= (1<<3); //(ecc_en) 
++		//conf |= (1<<2); // (use_gdma)
++
++		p = ra->readback_buffers;
++		ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_ECC_EN); 
++		if (ret == 0) 
++			goto ecc_check;
++		
++		//FIXME, double comfirm
++		printk("%s: read back fail, try again \n",__func__);
++		ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_ECC_EN); 
++		if (ret != 0) {
++			printk("\t%s: read back fail agian \n",__func__);
++			goto bad_block;
++		}
++	}
++	else if (mode == FL_READING) {
++		p = buf;
++	}	
++	else
++		return -2;
++
++ecc_check:
++	p += CFG_PAGESIZE;
++	if (!is_nand_page_2048) {
++		ecc = ra_inl(NFC_ECC); 
++		if (ecc == 0) //clean page.
++			return 0;
++		e = (char*)&ecc;
++		for (i=0; i<CONFIG_ECC_BYTES; i++) {
++			int eccpos = CONFIG_ECC_OFFSET + i;
++			if (*(p + eccpos) != (char)0xff)
++				break;
++			if (i == CONFIG_ECC_BYTES - 1) {
++				printk("skip ecc 0xff at page %x\n", page);
++				return 0;
++			}
++		}
++		for (i=0; i<CONFIG_ECC_BYTES; i++) {
++			int eccpos = CONFIG_ECC_OFFSET + i;
++			if (*(p + eccpos) != *(e + i)) {
++				printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, ecc:%x \n",
++						__func__, (mode == FL_READING)?"read":"write", page,	
++						*(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc);
++				return -1;
++			}
++		}
++	}
++#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \
++    defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)	
++	else {
++		int ecc2, ecc3, ecc4, qsz;
++		char *e2, *e3, *e4;
++		int correction_flag = 0;
++		ecc = ra_inl(NFC_ECC_P1);
++		ecc2 = ra_inl(NFC_ECC_P2);
++		ecc3 = ra_inl(NFC_ECC_P3);
++		ecc4 = ra_inl(NFC_ECC_P4);
++		e = (char*)&ecc;
++		e2 = (char*)&ecc2;
++		e3 = (char*)&ecc3;
++		e4 = (char*)&ecc4;
++		qsz = CFG_PAGE_OOBSIZE / 4;
++		if (ecc == 0 && ecc2 == 0 && ecc3 == 0 && ecc4 == 0)
++			return 0;
++		for (i=0; i<CONFIG_ECC_BYTES; i++) {
++			int eccpos = CONFIG_ECC_OFFSET + i;
++			if (*(p + eccpos) != (char)0xff)
++				break;
++			else if (*(p + eccpos + qsz) != (char)0xff)
++				break;
++			else if (*(p + eccpos + qsz*2) != (char)0xff)
++				break;
++			else if (*(p + eccpos + qsz*3) != (char)0xff)
++				break;
++			if (i == CONFIG_ECC_BYTES - 1) {
++				printk("skip ecc 0xff at page %x\n", page);
++				return 0;
++			}
++		}
++		for (i=0; i<CONFIG_ECC_BYTES; i++) {
++			int eccpos = CONFIG_ECC_OFFSET + i;
++			if (*(p + eccpos) != *(e + i)) {
++				printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, ecc:%x \n",
++						__func__, (mode == FL_READING)?"read":"write", page,
++						*(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc);
++				correction_flag |= 0x1;
++			}
++			if (*(p + eccpos + qsz) != *(e2 + i)) {
++				printk("%s mode:%s, invalid ecc2, page: %x read:%x %x %x, ecc2:%x \n",
++						__func__, (mode == FL_READING)?"read":"write", page,
++						*(p+CONFIG_ECC_OFFSET+qsz), *(p+ CONFIG_ECC_OFFSET+1+qsz), *(p+ CONFIG_ECC_OFFSET+2+qsz), ecc2);
++				correction_flag |= 0x2;
++			}
++			if (*(p + eccpos + qsz*2) != *(e3 + i)) {
++				printk("%s mode:%s, invalid ecc3, page: %x read:%x %x %x, ecc3:%x \n",
++						__func__, (mode == FL_READING)?"read":"write", page,
++						*(p+CONFIG_ECC_OFFSET+qsz*2), *(p+ CONFIG_ECC_OFFSET+1+qsz*2), *(p+ CONFIG_ECC_OFFSET+2+qsz*2), ecc3);
++				correction_flag |= 0x4;
++			}
++			if (*(p + eccpos + qsz*3) != *(e4 + i)) {
++				printk("%s mode:%s, invalid ecc4, page: %x read:%x %x %x, ecc4:%x \n",
++						__func__, (mode == FL_READING)?"read":"write", page,
++						*(p+CONFIG_ECC_OFFSET+qsz*3), *(p+ CONFIG_ECC_OFFSET+1+qsz*3), *(p+ CONFIG_ECC_OFFSET+2+qsz*3), ecc4);
++				correction_flag |= 0x8;
++			}
++		}
++
++		if (correction_flag)
++		{
++			printk("trying to do correction!\n");
++			if (correction_flag & 0x1)
++			{
++				int bytes, bits;
++				char *pBuf = p - CFG_PAGESIZE;
++			
++				if (one_bit_correction(p + CONFIG_ECC_OFFSET, e, &bytes, &bits) == 0)
++				{
++					pBuf[bytes] = pBuf[bytes] ^ (1 << bits);
++					printk("1. correct byte %d, bit %d!\n", bytes, bits);
++				}
++				else
++				{
++					printk("failed to correct!\n");
++					return -1;
++				}
++			}
++
++			if (correction_flag & 0x2)
++			{
++				int bytes, bits;
++				char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE/4;
++			
++				if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz), e2, &bytes, &bits) == 0)
++				{
++					pBuf[bytes] = pBuf[bytes] ^ (1 << bits);
++					printk("2. correct byte %d, bit %d!\n", bytes, bits);
++				}
++				else
++				{
++					printk("failed to correct!\n");
++					return -1;
++				}
++			}
++			if (correction_flag & 0x4)
++			{
++				int bytes, bits;
++				char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE/2;
++			
++				if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz * 2), e3, &bytes, &bits) == 0)
++				{
++					pBuf[bytes] = pBuf[bytes] ^ (1 << bits);
++					printk("3. correct byte %d, bit %d!\n", bytes, bits);
++				}
++				else
++				{
++					printk("failed to correct!\n");
++					return -1;
++				}
++			}
++			if (correction_flag & 0x8)
++			{
++				int bytes, bits;
++				char *pBuf = (p - CFG_PAGESIZE) + CFG_PAGESIZE*3/4;
++			
++				if (one_bit_correction((p + CONFIG_ECC_OFFSET + qsz * 3), e4, &bytes, &bits) == 0)
++				{
++					pBuf[bytes] = pBuf[bytes] ^ (1 << bits);
++					printk("4. correct byte %d, bit %d!\n", bytes, bits);
++				}
++				else
++				{
++					printk("failed to correct!\n");
++					return -1;
++				}
++			}
++		}
++
++	}
++#endif	
++	return 0;
++
++bad_block:
++	return -1;
++}
++
++#else
++
++void ranfc_dump(void) 
++{	
++	int i;
++	for (i=0; i<11; i++) {
++		if (i==6) 
++			continue;
++		printk("%x: %x \n", NFC_BASE + i*4, ra_inl(NFC_BASE + i*4));
++	}
++}
++
++/**
++ * @return 0, ecc OK or corrected.
++ * @return NAND_STATUS_FAIL, ecc fail.   
++ */
++
++int nfc_ecc_verify(struct ra_nand_chip *ra, char *buf, int page, int mode)
++{
++	int ret, i;
++	char *p, *e;
++	int ecc;
++	
++	if (ranfc_verify == 0)
++		return 0;
++
++	ra_dbg("%s, page:%x mode:%d\n", __func__, page, mode);
++
++	if (mode == FL_WRITING) { // read back and memcmp
++		ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_NONE); 
++		if (ret != 0) //double comfirm
++			ret = nfc_read_page(ra, ra->readback_buffers, page, FLAG_NONE); 
++
++		if (ret != 0) {
++			printk("%s: mode:%x read back fail \n", __func__, mode);
++			return -1;
++		}
++		return memcmp(buf, ra->readback_buffers, 1<<ra->page_shift);
++	}
++	
++	if (mode == FL_READING) { 
++#if 0
++		if (ra->sandbox_page == 0)
++			return 0;
++
++		ret = nfc_write_page(ra, buf, ra->sandbox_page, FLAG_USE_GDMA | FLAG_ECC_EN);
++		if (ret != 0) {
++			printk("%s, fail write sandbox_page \n", __func__);
++			return -1;
++		}
++#else
++		/** @note: 
++		 * The following command is actually not 'write' command to drive NFC to write flash.
++		 * However, it can make NFC to calculate ECC, that will be used to compare with original ones.
++		 * --YT
++		 */
++		unsigned int conf = 0x001223| (CFG_ADDR_CYCLE<<16) | (0x200 << 20) | (1<<3) | (1<<2); 
++		_nfc_write_raw_data(0xff, 0xff, ra->sandbox_page<<ra->page_shift, conf, buf, 0x200, FLAG_USE_GDMA);
++#endif
++
++		ecc = ra_inl(NFC_ECC); 
++		if (ecc == 0) //clean page.
++			return 0;
++		e = (char*)&ecc;
++		p = buf + (1<<ra->page_shift);
++		for (i=0; i<CONFIG_ECC_BYTES; i++) {
++			int eccpos = CONFIG_ECC_OFFSET + i;
++			if (*(p + eccpos) != *(e + i)) {
++				printk("%s mode:%s, invalid ecc, page: %x read:%x %x %x, write:%x \n",
++				       __func__, (mode == FL_READING)?"read":"write", page,	
++				       *(p+ CONFIG_ECC_OFFSET), *(p+ CONFIG_ECC_OFFSET+1), *(p+ CONFIG_ECC_OFFSET +2), ecc);
++
++				for (i=0; i<528; i++)
++					printk("%-2x \n", *(buf + i));
++				return -1;
++			}
++		}
++		return 0;
++	}
++
++	return -1;
++
++}
++
++#endif
++
++
++/**
++ * @return -EIO, writing size is less than a page 
++ * @return 0, OK
++ */
++int nfc_read_page(struct ra_nand_chip *ra, char *buf, int page, int flags)
++{
++	unsigned int cmd1 = 0, cmd2 = 0, conf = 0;
++	unsigned int bus_addr = 0, bus_addr2 = 0;
++	unsigned int ecc_en;
++	int use_gdma;
++	int size, offs;
++	int status = 0;
++
++	use_gdma = flags & FLAG_USE_GDMA;
++	ecc_en = flags & FLAG_ECC_EN;
++
++	page = page & (CFG_CHIPSIZE - 1); // chip boundary
++	size = CFG_PAGESIZE + CFG_PAGE_OOBSIZE; //add oobsize
++	offs = 0;
++
++	while (size > 0) {
++		int len;
++#if defined (WORKAROUND_RX_BUF_OV)
++		len = min(60, size);
++#else
++		len = size;
++#endif		
++		bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)) | (offs & ((1<<CFG_COLUMN_ADDR_CYCLE*8)-1)); 
++		if (is_nand_page_2048) {
++			bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8);
++			cmd1 = 0x0;
++			cmd2 = 0x30;
++			conf = 0x000511| ((CFG_ADDR_CYCLE)<<16) | (len << 20); 
++		}
++		else {
++			if (offs & ~(CFG_PAGESIZE-1))
++				cmd1 = 0x50;
++			else if (offs & ~((1<<CFG_COLUMN_ADDR_CYCLE*8)-1))
++				cmd1 = 0x01;
++			else
++				cmd1 = 0;
++
++			conf = 0x000141| ((CFG_ADDR_CYCLE)<<16) | (len << 20); 
++		}
++#if !defined (WORKAROUND_RX_BUF_OV)
++		if (ecc_en) 
++			conf |= (1<<3); 
++#endif
++		if (use_gdma)
++			conf |= (1<<2);
++
++		status = _nfc_read_raw_data(cmd1, cmd2, bus_addr, bus_addr2, conf, buf+offs, len, flags);
++		if (status & NAND_STATUS_FAIL) {
++			printk("%s: fail \n", __func__);
++			return -EIO;
++		}
++
++		offs += len;
++		size -= len;
++	}
++
++	// verify and correct ecc
++	if ((flags & (FLAG_VERIFY | FLAG_ECC_EN)) == (FLAG_VERIFY | FLAG_ECC_EN)) {
++		status = nfc_ecc_verify(ra, buf, page, FL_READING);	
++		if (status != 0) {
++			printk("%s: fail, buf:%x, page:%x, flag:%x\n", 
++			       __func__, (unsigned int)buf, page, flags);
++			return -EBADMSG;
++		}
++	}
++	else {
++		// fix,e not yet support
++		ra->buffers_page = -1; //cached
++	}
++
++	return 0;
++}
++
++
++/** 
++ * @return -EIO, fail to write
++ * @return 0, OK
++ */
++int nfc_write_page(struct ra_nand_chip *ra, char *buf, int page, int flags)
++{
++	unsigned int cmd1 = 0, cmd3, conf = 0;
++	unsigned int bus_addr = 0, bus_addr2 = 0;
++	unsigned int ecc_en;
++	int use_gdma;
++	int size;
++	char status;
++	uint8_t *oob = buf + (1<<ra->page_shift);
++
++	use_gdma = flags & FLAG_USE_GDMA;
++	ecc_en = flags & FLAG_ECC_EN;
++
++	oob[ra->badblockpos] = 0xff;	//tag as good block.
++	ra->buffers_page = -1; //cached
++
++	page = page & (CFG_CHIPSIZE-1); //chip boundary
++	size = CFG_PAGESIZE + CFG_PAGE_OOBSIZE; //add oobsize
++	bus_addr = (page << (CFG_COLUMN_ADDR_CYCLE*8)); //write_page always write from offset 0.
++
++	if (is_nand_page_2048) {
++	bus_addr2 = page >> (CFG_COLUMN_ADDR_CYCLE*8);
++		cmd1 = 0x80;
++		cmd3 = 0x10;
++		conf = 0x001123| ((CFG_ADDR_CYCLE)<<16) | (size << 20); 
++	}
++	else {
++	cmd1 = 0x8000;
++	cmd3 = 0x10;
++	conf = 0x001223| ((CFG_ADDR_CYCLE)<<16) | (size << 20); 
++}
++	if (ecc_en) 
++		conf |= (1<<3); //enable ecc
++	if (use_gdma)
++		conf |= (1<<2);
++
++	// set NFC
++	ra_dbg("nfc_write_page: cmd1: %x, cmd3: %x bus_addr: %x, conf: %x, len:%x\n", 
++	       cmd1, cmd3, bus_addr, conf, size);
++
++	status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, size, flags);
++	if (status & NAND_STATUS_FAIL) {
++		printk("%s: fail \n", __func__);
++		return -EIO;
++	}
++	
++
++	if (flags & FLAG_VERIFY) { // verify and correct ecc
++		status = nfc_ecc_verify(ra, buf, page, FL_WRITING);
++
++#ifdef RANDOM_GEN_BAD_BLOCK
++		if (((random32() & 0x1ff) == 0x0) && (page >= 0x100)) // randomly create bad block
++		{
++			printk("hmm... create a bad block at page %x\n", (bus_addr >> 16));
++			status = -1;
++		}
++#endif
++
++		if (status != 0) {
++			printk("%s: ecc_verify fail: ret:%x \n", __func__, status);
++			oob[ra->badblockpos] = 0x33; 
++			page -= page % (CFG_BLOCKSIZE/CFG_PAGESIZE);
++			printk("create a bad block at page %x\n", page);
++			if (!is_nand_page_2048)
++				status = nfc_write_oob(ra, page, ra->badblockpos, oob+ra->badblockpos, 1, flags);
++			else
++			{
++				status = _nfc_write_raw_data(cmd1, cmd3, bus_addr, bus_addr2, conf, buf, size, flags);
++				nfc_write_oob(ra, page, 0, oob, 16, FLAG_NONE);
++			}
++			return -EBADMSG;
++		}
++	}
++
++
++	ra->buffers_page = page; //cached
++	return 0;
++}
++
++
++
++/*************************************************************
++ * nand internal process 
++ *************************************************************/
++
++/**
++ * nand_release_device - [GENERIC] release chip
++ * @mtd:	MTD device structure
++ *
++ * Deselect, release chip lock and wake up anyone waiting on the device
++ */
++static void nand_release_device(struct ra_nand_chip *ra)
++{
++	/* De-select the NAND device */
++	nfc_select_chip(ra, -1);
++
++	/* Release the controller and the chip */
++	ra->state = FL_READY;
++
++	mutex_unlock(ra->controller);
++}
++
++/**
++ * nand_get_device - [GENERIC] Get chip for selected access
++ * @chip:	the nand chip descriptor
++ * @mtd:	MTD device structure
++ * @new_state:	the state which is requested
++ *
++ * Get the device and lock it for exclusive access
++ */
++static int
++nand_get_device(struct ra_nand_chip *ra, int new_state)
++{
++	int ret = 0;
++
++	ret = mutex_lock_interruptible(ra->controller);
++	if (!ret) 
++		ra->state = new_state;
++
++	return ret;
++
++}
++
++
++
++/*************************************************************
++ * nand internal process 
++ *************************************************************/
++
++int nand_bbt_get(struct ra_nand_chip *ra, int block)
++{
++	int byte, bits;
++	bits = block * BBTTAG_BITS;
++
++	byte = bits / 8;
++	bits = bits % 8;
++	
++	return (ra->bbt[byte] >> bits) & BBTTAG_BITS_MASK;
++}
++
++int nand_bbt_set(struct ra_nand_chip *ra, int block, int tag)
++{
++	int byte, bits;
++	bits = block * BBTTAG_BITS;
++
++	byte = bits / 8;
++	bits = bits % 8;
++
++	// If previous tag is bad, dont overwrite it	
++	if (((ra->bbt[byte] >> bits) & BBTTAG_BITS_MASK) == BBT_TAG_BAD)
++	{
++		return BBT_TAG_BAD;
++	}
++
++	ra->bbt[byte] = (ra->bbt[byte] & ~(BBTTAG_BITS_MASK << bits)) | ((tag & BBTTAG_BITS_MASK) << bits);
++		
++	return tag;
++}
++
++/**
++ * nand_block_checkbad - [GENERIC] Check if a block is marked bad
++ * @mtd:	MTD device structure
++ * @ofs:	offset from device start
++ *
++ * Check, if the block is bad. Either by reading the bad block table or
++ * calling of the scan function.
++ */
++int nand_block_checkbad(struct ra_nand_chip *ra, loff_t offs)
++{
++	int page, block;
++	int ret = 4;
++	unsigned int tag;
++	char *str[]= {"UNK", "RES", "BAD", "GOOD"};
++
++	if (ranfc_bbt == 0)
++		return 0;
++
++	{
++		// align with chip
++
++		offs = offs & ((1<<ra->chip_shift) -1);
++
++		page = offs >> ra->page_shift;
++		block = offs >> ra->erase_shift;
++	}
++
++	tag = nand_bbt_get(ra, block);
++
++	if (tag == BBT_TAG_UNKNOWN) {
++		ret = nfc_read_oob(ra, page, ra->badblockpos, (char*)&tag, 1, FLAG_NONE);
++		if (ret == 0)
++			tag = ((le32_to_cpu(tag) & 0x0ff) == 0x0ff) ? BBT_TAG_GOOD : BBT_TAG_BAD;
++		else
++			tag = BBT_TAG_BAD;
++
++		nand_bbt_set(ra, block, tag);
++	}
++
++	if (tag != BBT_TAG_GOOD) {
++		printk("%s: offs:%x tag: %s \n", __func__, (unsigned int)offs, str[tag]);
++		return 1;
++	}
++	else 
++		return 0;
++	
++}
++
++
++
++/**
++ * nand_block_markbad -
++ */
++int nand_block_markbad(struct ra_nand_chip *ra, loff_t offs)
++{
++	int page, block;
++	int ret = 4;
++	unsigned int tag;
++	char *ecc;
++
++	// align with chip
++	ra_dbg("%s offs: %x \n", __func__, (int)offs);
++
++	offs = offs & ((1<<ra->chip_shift) -1);
++
++	page = offs >> ra->page_shift;
++	block = offs >> ra->erase_shift;
++
++	tag = nand_bbt_get(ra, block);
++
++	if (tag == BBT_TAG_BAD) {
++		printk("%s: mark repeatedly \n", __func__);
++		return 0;
++	}
++
++	// new tag as bad
++	tag =BBT_TAG_BAD;
++	ret = nfc_read_page(ra, ra->buffers, page, FLAG_NONE);
++	if (ret != 0) {
++		printk("%s: fail to read bad block tag \n", __func__);
++		goto tag_bbt;
++	}
++
++	ecc = &ra->buffers[(1<<ra->page_shift)+ra->badblockpos];
++	if (*ecc == (char)0x0ff) {
++		//tag into flash
++		*ecc = (char)tag;
++		ret = nfc_write_page(ra, ra->buffers, page, FLAG_USE_GDMA);
++		if (ret)
++			printk("%s: fail to write bad block tag \n", __func__);
++		
++	}	
++
++tag_bbt:
++	//update bbt
++	nand_bbt_set(ra, block, tag);
++
++	return 0;
++}
++
++
++#if defined (WORKAROUND_RX_BUF_OV)
++/**
++ * to find a bad block for ecc verify of read_page
++ */
++unsigned int nand_bbt_find_sandbox(struct ra_nand_chip *ra)
++{
++	loff_t offs = 0;
++	int chipsize = 1 << ra->chip_shift;
++	int blocksize = 1 << ra->erase_shift;
++
++	
++	while (offs < chipsize) {
++		if (nand_block_checkbad(ra, offs)) //scan and verify the unknown tag
++			break;
++		offs += blocksize;
++	}
++
++	if (offs >= chipsize) {
++		offs = chipsize - blocksize;
++	}
++
++	nand_bbt_set(ra, (unsigned int)offs>>ra->erase_shift, BBT_TAG_RES);	 // tag bbt only, instead of update badblockpos of flash.
++	return (offs >> ra->page_shift);
++}
++#endif
++
++
++
++/**
++ * nand_erase_nand - [Internal] erase block(s)
++ * @mtd:	MTD device structure
++ * @instr:	erase instruction
++ * @allowbbt:	allow erasing the bbt area
++ *
++ * Erase one ore more blocks
++ */
++int _nand_erase_nand(struct ra_nand_chip *ra, struct erase_info *instr)
++{
++	int page, len, status, ret;
++	unsigned int addr, blocksize = 1<<ra->erase_shift;
++
++	ra_dbg("%s: start:%x, len:%x \n", __func__, 
++	       (unsigned int)instr->addr, (unsigned int)instr->len);
++
++//#define BLOCK_ALIGNED(a) ((a) & (blocksize - 1)) // already defined
++
++	if (BLOCK_ALIGNED(instr->addr) || BLOCK_ALIGNED(instr->len)) {
++		ra_dbg("%s: erase block not aligned, addr:%x len:%x\n", __func__, instr->addr, instr->len);
++		return -EINVAL;
++	}
++
++	instr->fail_addr = 0xffffffff;
++
++	len = instr->len;
++	addr = instr->addr;
++	instr->state = MTD_ERASING;
++
++	while (len) {
++
++		page = (int)(addr >> ra->page_shift);
++
++		/* select device and check wp */
++		if (nfc_enable_chip(ra, addr, 0)) {
++			printk("%s: nand is write protected \n", __func__);
++			instr->state = MTD_ERASE_FAILED;
++			goto erase_exit;
++		}
++
++		/* if we have a bad block, we do not erase bad blocks */
++		if (nand_block_checkbad(ra, addr)) {
++			printk(KERN_WARNING "nand_erase: attempt to erase a "
++			       "bad block at 0x%08x\n", addr);
++			instr->state = MTD_ERASE_FAILED;
++			goto erase_exit;
++		}
++
++		/*
++		 * Invalidate the page cache, if we erase the block which
++		 * contains the current cached page
++		 */
++		if (BLOCK_ALIGNED(addr) == BLOCK_ALIGNED(ra->buffers_page << ra->page_shift))
++			ra->buffers_page = -1;
++
++		status = nfc_erase_block(ra, page);
++		/* See if block erase succeeded */
++		if (status) {
++			printk("%s: failed erase, page 0x%08x\n", __func__, page);
++			instr->state = MTD_ERASE_FAILED;
++			instr->fail_addr = (page << ra->page_shift);
++			goto erase_exit;
++		}
++
++
++		/* Increment page address and decrement length */
++		len -= blocksize;
++		addr += blocksize;
++
++	}
++	instr->state = MTD_ERASE_DONE;
++
++erase_exit:
++
++	ret = ((instr->state == MTD_ERASE_DONE) ? 0 : -EIO);
++	/* Do call back function */
++	if (!ret)
++		mtd_erase_callback(instr);
++
++	if (ret) {
++		nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD);
++	}
++
++	/* Return more or less happy */
++	return ret;
++}
++
++static int
++nand_write_oob_buf(struct ra_nand_chip *ra, uint8_t *buf, uint8_t *oob, size_t size,
++		   int mode, int ooboffs)
++{
++	size_t oobsize = 1<<ra->oob_shift;
++	struct nand_oobfree *free;
++	uint32_t woffs = ooboffs;
++	int retsize = 0;
++
++	ra_dbg("%s: size:%x, mode:%x, offs:%x  \n", __func__, size, mode, ooboffs);
++
++	switch(mode) {
++	case MTD_OPS_PLACE_OOB:
++	case MTD_OPS_RAW:
++		if (ooboffs > oobsize)
++			return -1;
++
++		size = min(size, oobsize - ooboffs);
++		memcpy(buf + ooboffs, oob, size);
++		retsize = size;
++		break;
++
++	case MTD_OPS_AUTO_OOB:
++		if (ooboffs > ra->oob->oobavail)
++			return -1;
++
++		while (size) {
++			for(free = ra->oob->oobfree; free->length && size; free++) {
++				int wlen = free->length - woffs;
++				int bytes = 0;
++
++				/* Write request not from offset 0 ? */
++				if (wlen <= 0) {
++					woffs = -wlen;
++					continue;
++				}
++
++				bytes = min_t(size_t, size, wlen);
++				memcpy (buf + free->offset + woffs, oob, bytes);
++				woffs = 0;
++				oob += bytes;
++				size -= bytes;
++				retsize += bytes;
++			}
++			buf += oobsize;
++		}
++		break;
++
++	default:
++		BUG();
++	}
++
++	return retsize;
++}
++
++static int nand_read_oob_buf(struct ra_nand_chip *ra, uint8_t *oob, size_t size, 
++			     int mode, int ooboffs) 
++{
++	size_t oobsize = 1<<ra->oob_shift;
++	uint8_t *buf = ra->buffers + (1<<ra->page_shift);
++	int retsize=0;
++
++	ra_dbg("%s: size:%x, mode:%x, offs:%x  \n", __func__, size, mode, ooboffs);
++
++	switch(mode) {
++	case MTD_OPS_PLACE_OOB:
++	case MTD_OPS_RAW:
++		if (ooboffs > oobsize)
++			return -1;
++
++		size = min(size, oobsize - ooboffs);
++		memcpy(oob, buf + ooboffs, size);
++		return size;
++
++	case MTD_OPS_AUTO_OOB: {
++		struct nand_oobfree *free;
++		uint32_t woffs = ooboffs;
++
++		if (ooboffs > ra->oob->oobavail) 
++			return -1;
++		
++		size = min(size, ra->oob->oobavail - ooboffs);
++		for(free = ra->oob->oobfree; free->length && size; free++) {
++			int wlen = free->length - woffs;
++			int bytes = 0;
++
++			/* Write request not from offset 0 ? */
++			if (wlen <= 0) {
++				woffs = -wlen;
++				continue;
++			}
++			
++			bytes = min_t(size_t, size, wlen);
++			memcpy (oob, buf + free->offset + woffs, bytes);
++			woffs = 0;
++			oob += bytes;
++			size -= bytes;
++			retsize += bytes;
++		}
++		return retsize;
++	}
++	default:
++		BUG();
++	}
++	
++	return -1;
++}
++
++/**
++ * nand_do_write_ops - [Internal] NAND write with ECC
++ * @mtd:	MTD device structure
++ * @to:		offset to write to
++ * @ops:	oob operations description structure
++ *
++ * NAND write with ECC
++ */
++static int nand_do_write_ops(struct ra_nand_chip *ra, loff_t to,
++			     struct mtd_oob_ops *ops)
++{
++	int page;
++	uint32_t datalen = ops->len;
++	uint32_t ooblen = ops->ooblen;
++	uint8_t *oob = ops->oobbuf;
++	uint8_t *data = ops->datbuf;
++	int pagesize = (1<<ra->page_shift);
++	int pagemask = (pagesize -1);
++	int oobsize = 1<<ra->oob_shift;
++	loff_t addr = to;
++	//int i = 0; //for ra_dbg only
++
++	ra_dbg("%s: to:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x oobmode:%x \n", 
++	       __func__, (unsigned int)to, data, oob, datalen, ooblen, ops->ooboffs, ops->mode);
++
++	ops->retlen = 0;
++	ops->oobretlen = 0;
++
++
++	/* Invalidate the page cache, when we write to the cached page */
++	ra->buffers_page = -1;
++
++	
++	if (data ==0)
++		datalen = 0;
++	
++	// oob sequential (burst) write
++	if (datalen == 0 && ooblen) {
++		int len = ((ooblen + ops->ooboffs) + (ra->oob->oobavail - 1)) / ra->oob->oobavail * oobsize;
++
++		/* select chip, and check if it is write protected */
++		if (nfc_enable_chip(ra, addr, 0))
++			return -EIO;
++
++		//FIXME, need sanity check of block boundary
++		page = (int)((to & ((1<<ra->chip_shift)-1)) >> ra->page_shift); //chip boundary
++		memset(ra->buffers, 0x0ff, pagesize);
++		//fixme, should we reserve the original content?
++		if (ops->mode == MTD_OPS_AUTO_OOB) {
++			nfc_read_oob(ra, page, 0, ra->buffers, len, FLAG_NONE);
++		}
++		//prepare buffers
++		if (ooblen != 8)
++		{
++			nand_write_oob_buf(ra, ra->buffers, oob, ooblen, ops->mode, ops->ooboffs);
++			// write out buffer to chip
++			nfc_write_oob(ra, page, 0, ra->buffers, len, FLAG_USE_GDMA);
++		}
++
++		ops->oobretlen = ooblen;
++		ooblen = 0;
++	}
++
++	// data sequential (burst) write
++	if (datalen && ooblen == 0) {
++		// ranfc can not support write_data_burst, since hw-ecc and fifo constraints..
++	}
++
++	// page write
++	while(datalen || ooblen) {
++		int len;
++		int ret;
++		int offs;
++		int ecc_en = 0;
++
++		ra_dbg("%s (%d): addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", 
++		       __func__, i++, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs);
++
++		page = (int)((addr & ((1<<ra->chip_shift)-1)) >> ra->page_shift); //chip boundary
++		
++		/* select chip, and check if it is write protected */
++		if (nfc_enable_chip(ra, addr, 0))
++			return -EIO;
++
++		// oob write
++		if (ops->mode == MTD_OPS_AUTO_OOB) {
++			//fixme, this path is not yet varified 
++			nfc_read_oob(ra, page, 0, ra->buffers + pagesize, oobsize, FLAG_NONE);
++		}
++		if (oob && ooblen > 0) {
++			len = nand_write_oob_buf(ra, ra->buffers + pagesize, oob, ooblen, ops->mode, ops->ooboffs);
++			if (len < 0) 
++				return -EINVAL;
++			
++			oob += len;
++			ops->oobretlen += len;
++			ooblen -= len;
++		}
++
++		// data write
++		offs = addr & pagemask;
++		len = min_t(size_t, datalen, pagesize - offs);
++		if (data && len > 0) {
++			memcpy(ra->buffers + offs, data, len);	// we can not sure ops->buf wether is DMA-able.
++
++			data += len;
++			datalen -= len;
++			ops->retlen += len;
++
++			ecc_en = FLAG_ECC_EN;
++		}
++		ret = nfc_write_page(ra, ra->buffers, page, FLAG_USE_GDMA | FLAG_VERIFY |
++				     ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0 : ecc_en ));
++		if (ret) {
++			nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD);
++			return ret;
++		}
++
++		nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_GOOD);
++
++		addr = (page+1) << ra->page_shift;
++
++	}
++	return 0;
++}
++
++/**
++ * nand_do_read_ops - [Internal] Read data with ECC
++ *
++ * @mtd:	MTD device structure
++ * @from:	offset to read from
++ * @ops:	oob ops structure
++ *
++ * Internal function. Called with chip held.
++ */
++static int nand_do_read_ops(struct ra_nand_chip *ra, loff_t from,
++			    struct mtd_oob_ops *ops)
++{
++	int page;
++	uint32_t datalen = ops->len;
++	uint32_t ooblen = ops->ooblen;
++	uint8_t *oob = ops->oobbuf;
++	uint8_t *data = ops->datbuf;
++	int pagesize = (1<<ra->page_shift);
++	int pagemask = (pagesize -1);
++	loff_t addr = from;
++	//int i = 0; //for ra_dbg only
++
++	ra_dbg("%s: addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", 
++	       __func__, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs);
++
++	ops->retlen = 0;
++	ops->oobretlen = 0;
++	if (data == 0)
++		datalen = 0;
++
++
++	while(datalen || ooblen) {
++		int len;
++		int ret;
++		int offs;
++
++		ra_dbg("%s (%d): addr:%x, ops data:%p, oob:%p datalen:%x ooblen:%x, ooboffs:%x \n", 
++		       __func__, i++, (unsigned int)addr, data, oob, datalen, ooblen, ops->ooboffs);
++		/* select chip */
++		if (nfc_enable_chip(ra, addr, 1) < 0)
++			return -EIO;
++
++		page = (int)((addr & ((1<<ra->chip_shift)-1)) >> ra->page_shift); 
++
++		ret = nfc_read_page(ra, ra->buffers, page, FLAG_VERIFY | 
++				    ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0: FLAG_ECC_EN ));
++		//FIXME, something strange here, some page needs 2 more tries to guarantee read success.
++		if (ret) {
++			printk("read again:\n");
++			ret = nfc_read_page(ra, ra->buffers, page, FLAG_VERIFY | 
++					    ((ops->mode == MTD_OPS_RAW || ops->mode == MTD_OPS_PLACE_OOB) ? 0: FLAG_ECC_EN ));
++
++			if (ret) {
++				printk("read again fail \n");
++				nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_BAD);
++				if ((ret != -EUCLEAN) && (ret != -EBADMSG)) {
++					return ret;
++				}
++				else {
++					/* ecc verification fail, but data need to be returned. */
++				}
++			}
++			else {
++				printk(" read agian susccess \n");
++			}
++		}
++
++		// oob read
++		if (oob && ooblen > 0) {
++			len = nand_read_oob_buf(ra, oob, ooblen, ops->mode, ops->ooboffs);
++			if (len < 0) {
++				printk("nand_read_oob_buf: fail return %x \n", len);
++				return -EINVAL;
++			}
++
++			oob += len;
++			ops->oobretlen += len;
++			ooblen -= len;
++		}
++
++		// data read
++		offs = addr & pagemask;
++		len = min_t(size_t, datalen, pagesize - offs);
++		if (data && len > 0) {
++			memcpy(data, ra->buffers + offs, len);	// we can not sure ops->buf wether is DMA-able.
++
++			data += len;
++			datalen -= len;
++			ops->retlen += len;
++			if (ret)
++				return ret;
++		}
++
++
++		nand_bbt_set(ra, addr >> ra->erase_shift, BBT_TAG_GOOD);
++		// address go further to next page, instead of increasing of length of write. This avoids some special cases wrong.
++		addr = (page+1) << ra->page_shift;
++	}
++	return 0;
++}
++
++static int
++ramtd_nand_erase(struct mtd_info *mtd, struct erase_info *instr)
++{
++	struct ra_nand_chip *ra = (struct ra_nand_chip *)mtd->priv;
++	int ret;
++
++	ra_dbg("%s: start:%x, len:%x \n", __func__,
++		(unsigned int)instr->addr, (unsigned int)instr->len);
++
++	nand_get_device(ra, FL_ERASING);
++	ret = _nand_erase_nand((struct ra_nand_chip *)mtd->priv, instr);
++	nand_release_device(ra);
++
++	return ret;
++}
++
++static int
++ramtd_nand_write(struct mtd_info *mtd, loff_t to, size_t len,
++		size_t *retlen, const uint8_t *buf)
++{
++	struct ra_nand_chip *ra = mtd->priv;
++	struct mtd_oob_ops ops;
++	int ret;
++
++	ra_dbg("%s: to 0x%x len=0x%x\n", __func__, to, len);
++
++	if ((to + len) > mtd->size)
++		return -EINVAL;
++
++	if (!len)
++		return 0;
++
++	nand_get_device(ra, FL_WRITING);
++
++	memset(&ops, 0, sizeof(ops));
++	ops.len = len;
++	ops.datbuf = (uint8_t *)buf;
++	ops.oobbuf = NULL;
++	ops.mode =  MTD_OPS_AUTO_OOB;
++
++	ret = nand_do_write_ops(ra, to, &ops);
++
++	*retlen = ops.retlen;
++
++	nand_release_device(ra);
++
++	return ret;
++}
++
++static int
++ramtd_nand_read(struct mtd_info *mtd, loff_t from, size_t len,
++		size_t *retlen, uint8_t *buf)
++{
++
++	struct ra_nand_chip *ra = mtd->priv;
++	int ret;
++	struct mtd_oob_ops ops;
++
++	ra_dbg("%s: mtd:%p from:%x, len:%x, buf:%p \n", __func__, mtd, (unsigned int)from, len, buf);
++
++	/* Do not allow reads past end of device */
++	if ((from + len) > mtd->size)
++		return -EINVAL;
++	if (!len)
++		return 0;
++
++	nand_get_device(ra, FL_READING);
++
++	memset(&ops, 0, sizeof(ops));
++	ops.len = len;
++	ops.datbuf = buf;
++	ops.oobbuf = NULL;
++	ops.mode = MTD_OPS_AUTO_OOB;
++
++	ret = nand_do_read_ops(ra, from, &ops);
++
++	*retlen = ops.retlen;
++
++	nand_release_device(ra);
++
++	return ret;
++
++}
++
++static int
++ramtd_nand_readoob(struct mtd_info *mtd, loff_t from,
++			struct mtd_oob_ops *ops)
++{
++	struct ra_nand_chip *ra = mtd->priv;
++	int ret;
++
++	ra_dbg("%s: \n", __func__);
++
++	nand_get_device(ra, FL_READING);
++
++	ret = nand_do_read_ops(ra, from, ops);
++
++	nand_release_device(ra);
++
++	return ret;
++}
++
++static int
++ramtd_nand_writeoob(struct mtd_info *mtd, loff_t to,
++			struct mtd_oob_ops *ops)
++{
++	struct ra_nand_chip *ra = mtd->priv;
++	int ret;
++
++	nand_get_device(ra, FL_READING);
++	ret = nand_do_write_ops(ra, to, ops);
++	nand_release_device(ra);
++
++	return ret;
++}
++
++static int
++ramtd_nand_block_isbad(struct mtd_info *mtd, loff_t offs)
++{
++	if (offs > mtd->size)
++		return -EINVAL;
++
++	return nand_block_checkbad((struct ra_nand_chip *)mtd->priv, offs);
++}
++
++static int
++ramtd_nand_block_markbad(struct mtd_info *mtd, loff_t ofs)
++{
++	struct ra_nand_chip *ra = mtd->priv;
++	int ret;
++
++	ra_dbg("%s: \n", __func__);
++	nand_get_device(ra, FL_WRITING);
++	ret = nand_block_markbad(ra, ofs);
++	nand_release_device(ra);
++
++	return ret;
++}
++
++// 1-bit error detection
++static int one_bit_correction(char *ecc1, char *ecc2, int *bytes, int *bits)
++{
++	// check if ecc and expected are all valid
++	char *p, nibble, crumb;
++	int i, xor, iecc1 = 0, iecc2 = 0;
++
++	printk("correction : %x %x %x\n", ecc1[0], ecc1[1], ecc1[2]);
++	printk("correction : %x %x %x\n", ecc2[0], ecc2[1], ecc2[2]);
++
++	p = (char *)ecc1;
++	for (i = 0; i < CONFIG_ECC_BYTES; i++)
++	{
++		nibble = *(p+i) & 0xf;
++		if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) &&
++			(nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9))
++			return -1;
++		nibble = ((*(p+i)) >> 4) & 0xf;
++		if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) &&
++			(nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9))
++			return -1;
++	}
++
++	p = (char *)ecc2;
++	for (i = 0; i < CONFIG_ECC_BYTES; i++)
++	{
++		nibble = *(p+i) & 0xf;
++		if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) &&
++			(nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9))
++			return -1;
++		nibble = ((*(p+i)) >> 4) & 0xf;
++		if ((nibble != 0x0) && (nibble != 0xf) && (nibble != 0x3) && (nibble != 0xc) &&
++			(nibble != 0x5) && (nibble != 0xa) && (nibble != 0x6) && (nibble != 0x9))
++			return -1;
++	}
++
++	memcpy(&iecc1, ecc1, 3);
++	memcpy(&iecc2, ecc2, 3);
++
++	xor = iecc1 ^ iecc2;
++	printk("xor = %x (%x %x)\n", xor, iecc1, iecc2);
++
++	*bytes = 0;
++	for (i = 0; i < 9; i++)
++	{
++		crumb = (xor >> (2*i)) & 0x3;
++		if ((crumb == 0x0) || (crumb == 0x3))
++			return -1;
++		if (crumb == 0x2)
++			*bytes += (1 << i);
++	}
++
++	*bits = 0;
++	for (i = 0; i < 3; i++)
++	{
++		crumb = (xor >> (18 + 2*i)) & 0x3;
++		if ((crumb == 0x0) || (crumb == 0x3))
++			return -1;
++		if (crumb == 0x2)
++			*bits += (1 << i);
++	}
++
++	return 0;
++}
++
++
++
++/************************************************************
++ * the init/exit section.
++ */
++
++static struct nand_ecclayout ra_oob_layout = {
++	.eccbytes = CONFIG_ECC_BYTES,
++	.eccpos = {5, 6, 7},
++	.oobfree = {
++		 {.offset = 0, .length = 4},
++		 {.offset = 8, .length = 8},
++		 {.offset = 0, .length = 0}
++	 },
++#define RA_CHIP_OOB_AVAIL (4+8)
++	.oobavail = RA_CHIP_OOB_AVAIL,
++	// 5th byte is bad-block flag.
++};
++
++static int
++mtk_nand_probe(struct platform_device *pdev)
++{
++        struct mtd_part_parser_data ppdata;
++	struct ra_nand_chip *ra;
++	int alloc_size, bbt_size, buffers_size, reg, err;
++	unsigned char chip_mode = 12;
++
++/*	if(ra_check_flash_type()!=BOOT_FROM_NAND) {
++		return 0;
++	}*/
++
++	//FIXME: config 512 or 2048-byte page according to HWCONF
++#if defined (CONFIG_RALINK_RT6855A)
++	reg = ra_inl(RALINK_SYSCTL_BASE+0x8c);
++	chip_mode = ((reg>>28) & 0x3)|(((reg>>22) & 0x3)<<2);
++	if (chip_mode == 1) {
++		printk("! nand 2048\n");
++		ra_or(NFC_CONF1, 1);
++		is_nand_page_2048 = 1;
++		nand_addrlen = 5;
++	}
++	else {
++		printk("! nand 512\n");
++		ra_and(NFC_CONF1, ~1);
++		is_nand_page_2048 = 0;
++		nand_addrlen = 4;
++	}	
++#elif (defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_RT6855))
++	ra_outl(RALINK_SYSCTL_BASE+0x60, ra_inl(RALINK_SYSCTL_BASE+0x60) & ~(0x3<<18));
++	reg = ra_inl(RALINK_SYSCTL_BASE+0x10);
++	chip_mode = (reg & 0x0F);
++	if((chip_mode==1)||(chip_mode==11)) {
++		ra_or(NFC_CONF1, 1);
++		is_nand_page_2048 = 1;
++		nand_addrlen = ((chip_mode!=11) ? 4 : 5);
++		printk("!!! nand page size = 2048, addr len=%d\n", nand_addrlen);
++	}
++	else {
++		ra_and(NFC_CONF1, ~1);
++		is_nand_page_2048 = 0;
++		nand_addrlen = ((chip_mode!=10) ? 3 : 4);
++		printk("!!! nand page size = 512, addr len=%d\n", nand_addrlen);
++	}			
++#else
++	is_nand_page_2048 = 0;
++	nand_addrlen = 3;
++	printk("!!! nand page size = 512, addr len=%d\n", nand_addrlen);
++#endif			
++
++#if defined (CONFIG_RALINK_RT6855A) || defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_RT6855) 
++	//config ECC location
++    ra_and(NFC_CONF1, 0xfff000ff);
++	ra_or(NFC_CONF1, ((CONFIG_ECC_OFFSET + 2) << 16) +
++						((CONFIG_ECC_OFFSET + 1) << 12) +
++						(CONFIG_ECC_OFFSET << 8));
++#endif
++
++#define ALIGNE_16(a) (((unsigned long)(a)+15) & ~15)
++	buffers_size = ALIGNE_16((1<<CONFIG_PAGE_SIZE_BIT) + (1<<CONFIG_OOBSIZE_PER_PAGE_BIT)); //ra->buffers
++	bbt_size = BBTTAG_BITS * (1<<(CONFIG_CHIP_SIZE_BIT - (CONFIG_PAGE_SIZE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT))) / 8; //ra->bbt
++	bbt_size = ALIGNE_16(bbt_size);
++
++	alloc_size = buffers_size + bbt_size;
++	alloc_size += buffers_size; //for ra->readback_buffers
++	alloc_size += sizeof(*ra); 
++	alloc_size += sizeof(*ranfc_mtd);
++
++	//make sure gpio-0 is input
++	ra_outl(RALINK_PIO_BASE+0x24, ra_inl(RALINK_PIO_BASE+0x24) & ~0x01);
++
++	ra = (struct ra_nand_chip *)kzalloc(alloc_size, GFP_KERNEL | GFP_DMA);
++	if (!ra) {
++		printk("%s: mem alloc fail \n", __func__);
++		return -ENOMEM;
++	}
++	memset(ra, 0, alloc_size);
++
++	//dynamic
++	ra->buffers = (char *)((char *)ra + sizeof(*ra));
++	ra->readback_buffers = ra->buffers + buffers_size; 
++	ra->bbt = ra->readback_buffers + buffers_size; 
++	ranfc_mtd = (struct mtd_info *)(ra->bbt + bbt_size);
++
++	//static 
++	ra->numchips		= CONFIG_NUMCHIPS;
++	ra->chip_shift		= CONFIG_CHIP_SIZE_BIT;
++	ra->page_shift		= CONFIG_PAGE_SIZE_BIT;
++	ra->oob_shift		= CONFIG_OOBSIZE_PER_PAGE_BIT;
++	ra->erase_shift		= (CONFIG_PAGE_SIZE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT);
++	ra->badblockpos		= CONFIG_BAD_BLOCK_POS;
++	ra_oob_layout.eccpos[0] = CONFIG_ECC_OFFSET;
++	ra_oob_layout.eccpos[1] = CONFIG_ECC_OFFSET + 1;
++	ra_oob_layout.eccpos[2] = CONFIG_ECC_OFFSET + 2;
++	ra->oob			= &ra_oob_layout;
++	ra->buffers_page	= -1;
++
++#if defined (WORKAROUND_RX_BUF_OV)
++	if (ranfc_verify) {
++		ra->sandbox_page = nand_bbt_find_sandbox(ra);
++	}
++#endif
++	ra_outl(NFC_CTRL, ra_inl(NFC_CTRL) | 0x01); //set wp to high
++	nfc_all_reset();
++
++	ranfc_mtd->type		= MTD_NANDFLASH;
++	ranfc_mtd->flags	= MTD_CAP_NANDFLASH;
++	ranfc_mtd->size		= CONFIG_NUMCHIPS * CFG_CHIPSIZE;
++	ranfc_mtd->erasesize	= CFG_BLOCKSIZE;
++	ranfc_mtd->writesize	= CFG_PAGESIZE;
++	ranfc_mtd->oobsize 	= CFG_PAGE_OOBSIZE;
++	ranfc_mtd->oobavail	= RA_CHIP_OOB_AVAIL;
++	ranfc_mtd->name		= "ra_nfc";
++	//ranfc_mtd->index
++	ranfc_mtd->ecclayout	= &ra_oob_layout;
++	//ranfc_mtd->numberaseregions
++	//ranfc_mtd->eraseregions
++	//ranfc_mtd->bansize
++	ranfc_mtd->_erase 	= ramtd_nand_erase;
++	//ranfc_mtd->point
++	//ranfc_mtd->unpoint
++	ranfc_mtd->_read		= ramtd_nand_read;
++	ranfc_mtd->_write	= ramtd_nand_write;
++	ranfc_mtd->_read_oob	= ramtd_nand_readoob;
++	ranfc_mtd->_write_oob	= ramtd_nand_writeoob;
++	//ranfc_mtd->get_fact_prot_info; ranfc_mtd->read_fact_prot_reg; 
++	//ranfc_mtd->get_user_prot_info; ranfc_mtd->read_user_prot_reg;
++	//ranfc_mtd->write_user_prot_reg; ranfc_mtd->lock_user_prot_reg;
++	//ranfc_mtd->writev; ranfc_mtd->sync; ranfc_mtd->lock; ranfc_mtd->unlock; ranfc_mtd->suspend; ranfc_mtd->resume;
++	ranfc_mtd->_block_isbad		= ramtd_nand_block_isbad;
++	ranfc_mtd->_block_markbad	= ramtd_nand_block_markbad;
++	//ranfc_mtd->reboot_notifier
++	//ranfc_mtd->ecc_stats;
++	// subpage_sht;
++
++	//ranfc_mtd->get_device; ranfc_mtd->put_device
++	ranfc_mtd->priv = ra;
++
++	ranfc_mtd->owner = THIS_MODULE;
++	ra->controller = &ra->hwcontrol;
++	mutex_init(ra->controller);
++
++	printk("%s: alloc %x, at %p , btt(%p, %x), ranfc_mtd:%p\n", 
++	       __func__ , alloc_size, ra, ra->bbt, bbt_size, ranfc_mtd);
++
++	ppdata.of_node = pdev->dev.of_node;
++	err = mtd_device_parse_register(ranfc_mtd, mtk_probe_types,
++			&ppdata, NULL, 0);
++
++	return err;
++}
++
++static int
++mtk_nand_remove(struct platform_device *pdev)
++{
++	struct ra_nand_chip *ra;
++
++	if (ranfc_mtd) {
++		ra = (struct ra_nand_chip  *)ranfc_mtd->priv;
++
++		/* Deregister partitions */
++		//del_mtd_partitions(ranfc_mtd);
++		kfree(ra);
++	}
++	return 0;
++}
++
++static const struct of_device_id mtk_nand_match[] = {
++	{ .compatible = "mtk,mt7620-nand" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mtk_nand_match);
++
++static struct platform_driver mtk_nand_driver = {
++	.probe = mtk_nand_probe,
++	.remove = mtk_nand_remove,
++	.driver = {
++		.name = "mt7620_nand",
++		.owner = THIS_MODULE,
++		.of_match_table = mtk_nand_match,
++	},
++};
++
++module_platform_driver(mtk_nand_driver);
++
++
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/drivers/mtd/maps/ralink_nand.h
+@@ -0,0 +1,232 @@
++#ifndef RT2880_NAND_H
++#define RT2880_NAND_H
++
++#include <linux/mtd/mtd.h>
++
++//#include "gdma.h"
++
++#define RALINK_SYSCTL_BASE		0xB0000000
++#define RALINK_PIO_BASE			0xB0000600
++#define RALINK_NAND_CTRL_BASE		0xB0000810
++#define CONFIG_RALINK_MT7620
++
++#define SKIP_BAD_BLOCK
++//#define RANDOM_GEN_BAD_BLOCK
++
++#define ra_inl(addr)  (*(volatile unsigned int *)(addr))
++#define ra_outl(addr, value)  (*(volatile unsigned int *)(addr) = (value))
++#define ra_aor(addr, a_mask, o_value)  ra_outl(addr, (ra_inl(addr) & (a_mask)) | (o_value))
++#define ra_and(addr, a_mask)  ra_aor(addr, a_mask, 0)
++#define ra_or(addr, o_value)  ra_aor(addr, -1, o_value)
++
++
++#define CONFIG_NUMCHIPS 1
++#define CONFIG_NOT_SUPPORT_WP //rt3052 has no WP signal for chip.
++//#define CONFIG_NOT_SUPPORT_RB
++
++extern int is_nand_page_2048;
++extern const unsigned int nand_size_map[2][3];
++
++//chip
++// chip geometry: SAMSUNG small size 32MB.
++#define CONFIG_CHIP_SIZE_BIT (nand_size_map[is_nand_page_2048][nand_addrlen-3]) //! (1<<NAND_SIZE_BYTE) MB
++//#define CONFIG_CHIP_SIZE_BIT (is_nand_page_2048? 29 : 25)	//! (1<<NAND_SIZE_BYTE) MB
++#define CONFIG_PAGE_SIZE_BIT (is_nand_page_2048? 11 : 9)	//! (1<<PAGE_SIZE) MB
++//#define CONFIG_SUBPAGE_BIT 1		//! these bits will be compensate by command cycle
++#define CONFIG_NUMPAGE_PER_BLOCK_BIT (is_nand_page_2048? 6 : 5)	//! order of number of pages a block. 
++#define CONFIG_OOBSIZE_PER_PAGE_BIT (is_nand_page_2048? 6 : 4)	//! byte number of oob a page.
++#define CONFIG_BAD_BLOCK_POS (is_nand_page_2048? 0 : 4)     //! offset of byte to denote bad block.
++#define CONFIG_ECC_BYTES 3      //! ecc has 3 bytes
++#define CONFIG_ECC_OFFSET (is_nand_page_2048? 6 : 5)        //! ecc starts from offset 5.
++
++//this section should not be modified.
++//#define CFG_COLUMN_ADDR_MASK ((1 << (CONFIG_PAGE_SIZE_BIT - CONFIG_SUBPAGE_BIT)) - 1)
++//#define CFG_COLUMN_ADDR_CYCLE (((CONFIG_PAGE_SIZE_BIT - CONFIG_SUBPAGE_BIT) + 7)/8) 
++//#define CFG_ROW_ADDR_CYCLE ((CONFIG_CHIP_SIZE_BIT - CONFIG_PAGE_SIZE_BIT + 7)/8) 
++//#define CFG_ADDR_CYCLE (CFG_COLUMN_ADDR_CYCLE + CFG_ROW_ADDR_CYCLE)
++
++#define CFG_COLUMN_ADDR_CYCLE   (is_nand_page_2048? 2 : 1)
++#define CFG_ROW_ADDR_CYCLE      (nand_addrlen - CFG_COLUMN_ADDR_CYCLE)
++#define CFG_ADDR_CYCLE (CFG_COLUMN_ADDR_CYCLE + CFG_ROW_ADDR_CYCLE)
++
++#define CFG_CHIPSIZE    (1 << ((CONFIG_CHIP_SIZE_BIT>=32)? 31 : CONFIG_CHIP_SIZE_BIT))
++//#define CFG_CHIPSIZE  	(1 << CONFIG_CHIP_SIZE_BIT)
++#define CFG_PAGESIZE	(1 << CONFIG_PAGE_SIZE_BIT)
++#define CFG_BLOCKSIZE 	(CFG_PAGESIZE << CONFIG_NUMPAGE_PER_BLOCK_BIT)
++#define CFG_NUMPAGE	(1 << (CONFIG_CHIP_SIZE_BIT - CONFIG_PAGE_SIZE_BIT))
++#define CFG_NUMBLOCK	(CFG_NUMPAGE >> CONFIG_NUMPAGE_PER_BLOCK_BIT)
++#define CFG_BLOCK_OOBSIZE	(1 << (CONFIG_OOBSIZE_PER_PAGE_BIT + CONFIG_NUMPAGE_PER_BLOCK_BIT))	
++#define CFG_PAGE_OOBSIZE	(1 << CONFIG_OOBSIZE_PER_PAGE_BIT)	
++
++#define NAND_BLOCK_ALIGN(addr) ((addr) & (CFG_BLOCKSIZE-1))
++#define NAND_PAGE_ALIGN(addr) ((addr) & (CFG_PAGESIZE-1))
++
++
++#define NFC_BASE 	RALINK_NAND_CTRL_BASE
++#define NFC_CTRL	(NFC_BASE + 0x0)
++#define NFC_CONF	(NFC_BASE + 0x4)
++#define NFC_CMD1	(NFC_BASE + 0x8)
++#define NFC_CMD2	(NFC_BASE + 0xc)
++#define NFC_CMD3	(NFC_BASE + 0x10)
++#define NFC_ADDR	(NFC_BASE + 0x14)
++#define NFC_DATA	(NFC_BASE + 0x18)
++#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \
++	defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)
++#define NFC_ECC		(NFC_BASE + 0x30)
++#else
++#define NFC_ECC		(NFC_BASE + 0x1c)
++#endif
++#define NFC_STATUS	(NFC_BASE + 0x20)
++#define NFC_INT_EN	(NFC_BASE + 0x24)
++#define NFC_INT_ST	(NFC_BASE + 0x28)
++#if defined (CONFIG_RALINK_RT6855) || defined (CONFIG_RALINK_RT6855A) || \
++	defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)
++#define NFC_CONF1	(NFC_BASE + 0x2c)
++#define NFC_ECC_P1	(NFC_BASE + 0x30)
++#define NFC_ECC_P2	(NFC_BASE + 0x34)
++#define NFC_ECC_P3	(NFC_BASE + 0x38)
++#define NFC_ECC_P4	(NFC_BASE + 0x3c)
++#define NFC_ECC_ERR1	(NFC_BASE + 0x40)
++#define NFC_ECC_ERR2	(NFC_BASE + 0x44)
++#define NFC_ECC_ERR3	(NFC_BASE + 0x48)
++#define NFC_ECC_ERR4	(NFC_BASE + 0x4c)
++#define NFC_ADDR2	(NFC_BASE + 0x50)
++#endif
++
++enum _int_stat {
++	INT_ST_ND_DONE 	= 1<<0,
++	INT_ST_TX_BUF_RDY       = 1<<1,
++	INT_ST_RX_BUF_RDY	= 1<<2,
++	INT_ST_ECC_ERR		= 1<<3,
++	INT_ST_TX_TRAS_ERR	= 1<<4,
++	INT_ST_RX_TRAS_ERR	= 1<<5,
++	INT_ST_TX_KICK_ERR	= 1<<6,
++	INT_ST_RX_KICK_ERR      = 1<<7
++};
++
++
++//#define WORKAROUND_RX_BUF_OV 1
++
++
++/*************************************************************
++ * stolen from nand.h
++ *************************************************************/
++
++/*
++ * Standard NAND flash commands
++ */
++#define NAND_CMD_READ0		0
++#define NAND_CMD_READ1		1
++#define NAND_CMD_RNDOUT		5
++#define NAND_CMD_PAGEPROG	0x10
++#define NAND_CMD_READOOB	0x50
++#define NAND_CMD_ERASE1		0x60
++#define NAND_CMD_STATUS		0x70
++#define NAND_CMD_STATUS_MULTI	0x71
++#define NAND_CMD_SEQIN		0x80
++#define NAND_CMD_RNDIN		0x85
++#define NAND_CMD_READID		0x90
++#define NAND_CMD_ERASE2		0xd0
++#define NAND_CMD_RESET		0xff
++
++/* Extended commands for large page devices */
++#define NAND_CMD_READSTART	0x30
++#define NAND_CMD_RNDOUTSTART	0xE0
++#define NAND_CMD_CACHEDPROG	0x15
++
++/* Extended commands for AG-AND device */
++/*
++ * Note: the command for NAND_CMD_DEPLETE1 is really 0x00 but
++ *       there is no way to distinguish that from NAND_CMD_READ0
++ *       until the remaining sequence of commands has been completed
++ *       so add a high order bit and mask it off in the command.
++ */
++#define NAND_CMD_DEPLETE1	0x100
++#define NAND_CMD_DEPLETE2	0x38
++#define NAND_CMD_STATUS_MULTI	0x71
++#define NAND_CMD_STATUS_ERROR	0x72
++/* multi-bank error status (banks 0-3) */
++#define NAND_CMD_STATUS_ERROR0	0x73
++#define NAND_CMD_STATUS_ERROR1	0x74
++#define NAND_CMD_STATUS_ERROR2	0x75
++#define NAND_CMD_STATUS_ERROR3	0x76
++#define NAND_CMD_STATUS_RESET	0x7f
++#define NAND_CMD_STATUS_CLEAR	0xff
++
++#define NAND_CMD_NONE		-1
++
++/* Status bits */
++#define NAND_STATUS_FAIL	0x01
++#define NAND_STATUS_FAIL_N1	0x02
++#define NAND_STATUS_TRUE_READY	0x20
++#define NAND_STATUS_READY	0x40
++#define NAND_STATUS_WP		0x80
++
++typedef enum {
++	FL_READY,
++	FL_READING,
++	FL_WRITING,
++	FL_ERASING,
++	FL_SYNCING,
++	FL_CACHEDPRG,
++	FL_PM_SUSPENDED,
++} nand_state_t;
++
++/*************************************************************/
++
++
++
++typedef enum _ra_flags {
++	FLAG_NONE	= 0,
++	FLAG_ECC_EN 	= (1<<0),
++	FLAG_USE_GDMA 	= (1<<1),
++	FLAG_VERIFY 	= (1<<2),
++} RA_FLAGS;
++
++
++#define BBTTAG_BITS		2
++#define BBTTAG_BITS_MASK	((1<<BBTTAG_BITS) -1)
++enum BBT_TAG {
++	BBT_TAG_UNKNOWN = 0, //2'b01
++	BBT_TAG_GOOD	= 3, //2'b11
++	BBT_TAG_BAD	= 2, //2'b10
++	BBT_TAG_RES	= 1, //2'b01
++};
++
++struct ra_nand_chip {
++	int	numchips;
++	int 	chip_shift;
++	int	page_shift;
++	int 	erase_shift;
++	int 	oob_shift;
++	int	badblockpos;
++#if !defined (__UBOOT__)
++	struct mutex hwcontrol;
++	struct mutex *controller;
++#endif
++	struct nand_ecclayout	*oob;
++	int 	state;
++	unsigned int 	buffers_page;
++	char	*buffers; //[CFG_PAGESIZE + CFG_PAGE_OOBSIZE];
++	char 	*readback_buffers;
++	unsigned char 	*bbt;
++#if defined (WORKAROUND_RX_BUF_OV)
++	unsigned int	 sandbox_page;	// steal a page (block) for read ECC verification
++#endif
++
++};
++
++
++
++//fixme, gdma api 
++int nand_dma_sync(void);
++void release_dma_buf(void);
++int set_gdma_ch(unsigned long dst, 
++		unsigned long src, unsigned int len, int burst_size,
++		int soft_mode, int src_req_type, int dst_req_type,
++		int src_burst_mode, int dst_burst_mode);
++
++
++
++
++#endif

target/linux/ramips/patches-4.4/0039-mtd-add-mt7621-nand-support.patch

@@ -0,0 +1,4417 @@
+From 0e1c4e3c97b83b4e7da65b1c56f0a7d40736ac53 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 11:05:17 +0100
+Subject: [PATCH 39/53] mtd: add mt7621 nand support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mtd/nand/Kconfig            |    6 +
+ drivers/mtd/nand/Makefile           |    1 +
+ drivers/mtd/nand/bmt.c              |  750 ++++++++++++
+ drivers/mtd/nand/bmt.h              |   80 ++
+ drivers/mtd/nand/dev-nand.c         |   63 +
+ drivers/mtd/nand/mt6575_typedefs.h  |  340 ++++++
+ drivers/mtd/nand/mtk_nand.c         | 2304 +++++++++++++++++++++++++++++++++++
+ drivers/mtd/nand/mtk_nand.h         |  452 +++++++
+ drivers/mtd/nand/nand_base.c        |    6 +-
+ drivers/mtd/nand/nand_bbt.c         |   19 +
+ drivers/mtd/nand/nand_def.h         |  123 ++
+ drivers/mtd/nand/nand_device_list.h |   55 +
+ drivers/mtd/nand/partition.h        |  115 ++
+ 13 files changed, 4311 insertions(+), 3 deletions(-)
+ create mode 100644 drivers/mtd/nand/bmt.c
+ create mode 100644 drivers/mtd/nand/bmt.h
+ create mode 100644 drivers/mtd/nand/dev-nand.c
+ create mode 100644 drivers/mtd/nand/mt6575_typedefs.h
+ create mode 100644 drivers/mtd/nand/mtk_nand.c
+ create mode 100644 drivers/mtd/nand/mtk_nand.h
+ create mode 100644 drivers/mtd/nand/nand_def.h
+ create mode 100644 drivers/mtd/nand/nand_device_list.h
+ create mode 100644 drivers/mtd/nand/partition.h
+
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -546,4 +546,10 @@ config MTD_NAND_HISI504
+ 	help
+ 	  Enables support for NAND controller on Hisilicon SoC Hip04.
+ 
++config MTK_MTD_NAND
++	tristate "Support for MTK SoC NAND controller"
++	depends on SOC_MT7621
++	select MTD_NAND_IDS
++	select MTD_NAND_ECC
++
+ endif # MTD_NAND
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -55,5 +55,6 @@ obj-$(CONFIG_MTD_NAND_BCM47XXNFLASH)	+=
+ obj-$(CONFIG_MTD_NAND_SUNXI)		+= sunxi_nand.o
+ obj-$(CONFIG_MTD_NAND_HISI504)	        += hisi504_nand.o
+ obj-$(CONFIG_MTD_NAND_BRCMNAND)		+= brcmnand/
++obj-$(CONFIG_MTK_MTD_NAND)                      += mtk_nand.o bmt.o
+ 
+ nand-objs := nand_base.o nand_bbt.o nand_timings.o
+--- /dev/null
++++ b/drivers/mtd/nand/bmt.c
+@@ -0,0 +1,750 @@
++#include "bmt.h"
++
++typedef struct
++{
++    char signature[3];
++    u8 version;
++    u8 bad_count;               // bad block count in pool
++    u8 mapped_count;            // mapped block count in pool
++    u8 checksum;
++    u8 reseverd[13];
++} phys_bmt_header;
++
++typedef struct
++{
++    phys_bmt_header header;
++    bmt_entry table[MAX_BMT_SIZE];
++} phys_bmt_struct;
++
++typedef struct
++{
++    char signature[3];
++} bmt_oob_data;
++
++static char MAIN_SIGNATURE[] = "BMT";
++static char OOB_SIGNATURE[] = "bmt";
++#define SIGNATURE_SIZE      (3)
++
++#define MAX_DAT_SIZE        0x1000
++#define MAX_OOB_SIZE        0x80
++
++static struct mtd_info *mtd_bmt;
++static struct nand_chip *nand_chip_bmt;
++#define BLOCK_SIZE_BMT          (1 << nand_chip_bmt->phys_erase_shift)
++#define PAGE_SIZE_BMT           (1 << nand_chip_bmt->page_shift)
++
++#define OFFSET(block)       ((block) * BLOCK_SIZE_BMT)  
++#define PAGE_ADDR(block)    ((block) * BLOCK_SIZE_BMT / PAGE_SIZE_BMT)
++
++/*********************************************************************
++* Flash is splited into 2 parts, system part is for normal system    *
++* system usage, size is system_block_count, another is replace pool  *
++*    +-------------------------------------------------+             *
++*    |     system_block_count     |   bmt_block_count  |             *
++*    +-------------------------------------------------+             *
++*********************************************************************/
++static u32 total_block_count;   // block number in flash
++static u32 system_block_count;
++static int bmt_block_count;     // bmt table size
++// static int bmt_count;               // block used in bmt
++static int page_per_block;      // page per count
++
++static u32 bmt_block_index;     // bmt block index
++static bmt_struct bmt;          // dynamic created global bmt table
++
++static u8 dat_buf[MAX_DAT_SIZE];
++static u8 oob_buf[MAX_OOB_SIZE];
++static bool pool_erased;
++
++/***************************************************************
++*                                                              
++* Interface adaptor for preloader/uboot/kernel                 
++*    These interfaces operate on physical address, read/write
++*       physical data.
++*                                                              
++***************************************************************/
++int nand_read_page_bmt(u32 page, u8 * dat, u8 * oob)
++{
++    return mtk_nand_exec_read_page(mtd_bmt, page, PAGE_SIZE_BMT, dat, oob);
++}
++
++bool nand_block_bad_bmt(u32 offset)
++{
++    return mtk_nand_block_bad_hw(mtd_bmt, offset);
++}
++
++bool nand_erase_bmt(u32 offset)
++{
++    int status;
++    if (offset < 0x20000)
++    {
++        MSG(INIT, "erase offset: 0x%x\n", offset);
++    }
++
++    status = mtk_nand_erase_hw(mtd_bmt, offset / PAGE_SIZE_BMT); // as nand_chip structure doesn't have a erase function defined
++    if (status & NAND_STATUS_FAIL)
++        return false;
++    else
++        return true;
++}
++
++int mark_block_bad_bmt(u32 offset)
++{
++    return mtk_nand_block_markbad_hw(mtd_bmt, offset);   //mark_block_bad_hw(offset);
++}
++
++bool nand_write_page_bmt(u32 page, u8 * dat, u8 * oob)
++{
++    if (mtk_nand_exec_write_page(mtd_bmt, page, PAGE_SIZE_BMT, dat, oob))
++        return false;
++    else
++        return true;
++}
++
++/***************************************************************
++*                                                              *
++* static internal function                                     *
++*                                                              *
++***************************************************************/
++static void dump_bmt_info(bmt_struct * bmt)
++{
++    int i;
++
++    MSG(INIT, "BMT v%d. total %d mapping:\n", bmt->version, bmt->mapped_count);
++    for (i = 0; i < bmt->mapped_count; i++)
++    {
++        MSG(INIT, "\t0x%x -> 0x%x\n", bmt->table[i].bad_index, bmt->table[i].mapped_index);
++    }
++}
++
++static bool match_bmt_signature(u8 * dat, u8 * oob)
++{
++
++    if (memcmp(dat + MAIN_SIGNATURE_OFFSET, MAIN_SIGNATURE, SIGNATURE_SIZE))
++    {
++        return false;
++    }
++
++    if (memcmp(oob + OOB_SIGNATURE_OFFSET, OOB_SIGNATURE, SIGNATURE_SIZE))
++    {
++        MSG(INIT, "main signature match, oob signature doesn't match, but ignore\n");
++    }
++    return true;
++}
++
++static u8 cal_bmt_checksum(phys_bmt_struct * phys_table, int bmt_size)
++{
++    int i;
++    u8 checksum = 0;
++    u8 *dat = (u8 *) phys_table;
++
++    checksum += phys_table->header.version;
++    checksum += phys_table->header.mapped_count;
++
++    dat += sizeof(phys_bmt_header);
++    for (i = 0; i < bmt_size * sizeof(bmt_entry); i++)
++    {
++        checksum += dat[i];
++    }
++
++    return checksum;
++}
++
++
++static int is_block_mapped(int index)
++{
++    int i;
++    for (i = 0; i < bmt.mapped_count; i++)
++    {
++        if (index == bmt.table[i].mapped_index)
++            return i;
++    }
++    return -1;
++}
++
++static bool is_page_used(u8 * dat, u8 * oob)
++{
++    return ((oob[OOB_INDEX_OFFSET] != 0xFF) || (oob[OOB_INDEX_OFFSET + 1] != 0xFF));
++}
++
++static bool valid_bmt_data(phys_bmt_struct * phys_table)
++{
++    int i;
++    u8 checksum = cal_bmt_checksum(phys_table, bmt_block_count);
++
++    // checksum correct?
++    if (phys_table->header.checksum != checksum)
++    {
++        MSG(INIT, "BMT Data checksum error: %x %x\n", phys_table->header.checksum, checksum);
++        return false;
++    }
++
++    MSG(INIT, "BMT Checksum is: 0x%x\n", phys_table->header.checksum);
++
++    // block index correct?
++    for (i = 0; i < phys_table->header.mapped_count; i++)
++    {
++        if (phys_table->table[i].bad_index >= total_block_count || phys_table->table[i].mapped_index >= total_block_count || phys_table->table[i].mapped_index < system_block_count)
++        {
++            MSG(INIT, "index error: bad_index: %d, mapped_index: %d\n", phys_table->table[i].bad_index, phys_table->table[i].mapped_index);
++            return false;
++        }
++    }
++
++    // pass check, valid bmt.
++    MSG(INIT, "Valid BMT, version v%d\n", phys_table->header.version);
++    return true;
++}
++
++static void fill_nand_bmt_buffer(bmt_struct * bmt, u8 * dat, u8 * oob)
++{
++    phys_bmt_struct phys_bmt;
++
++    dump_bmt_info(bmt);
++
++    // fill phys_bmt_struct structure with bmt_struct
++    memset(&phys_bmt, 0xFF, sizeof(phys_bmt));
++
++    memcpy(phys_bmt.header.signature, MAIN_SIGNATURE, SIGNATURE_SIZE);
++    phys_bmt.header.version = BMT_VERSION;
++    // phys_bmt.header.bad_count = bmt->bad_count;
++    phys_bmt.header.mapped_count = bmt->mapped_count;
++    memcpy(phys_bmt.table, bmt->table, sizeof(bmt_entry) * bmt_block_count);
++
++    phys_bmt.header.checksum = cal_bmt_checksum(&phys_bmt, bmt_block_count);
++
++    memcpy(dat + MAIN_SIGNATURE_OFFSET, &phys_bmt, sizeof(phys_bmt));
++    memcpy(oob + OOB_SIGNATURE_OFFSET, OOB_SIGNATURE, SIGNATURE_SIZE);
++}
++
++// return valid index if found BMT, else return 0
++static int load_bmt_data(int start, int pool_size)
++{
++    int bmt_index = start + pool_size - 1;  // find from the end
++    phys_bmt_struct phys_table;
++    int i;
++
++    MSG(INIT, "[%s]: begin to search BMT from block 0x%x\n", __FUNCTION__, bmt_index);
++
++    for (bmt_index = start + pool_size - 1; bmt_index >= start; bmt_index--)
++    {
++        if (nand_block_bad_bmt(OFFSET(bmt_index)))
++        {
++            MSG(INIT, "Skip bad block: %d\n", bmt_index);
++            continue;
++        }
++
++        if (!nand_read_page_bmt(PAGE_ADDR(bmt_index), dat_buf, oob_buf))
++        {
++            MSG(INIT, "Error found when read block %d\n", bmt_index);
++            continue;
++        }
++
++        if (!match_bmt_signature(dat_buf, oob_buf))
++        {
++            continue;
++        }
++
++        MSG(INIT, "Match bmt signature @ block: 0x%x\n", bmt_index);
++
++        memcpy(&phys_table, dat_buf + MAIN_SIGNATURE_OFFSET, sizeof(phys_table));
++
++        if (!valid_bmt_data(&phys_table))
++        {
++            MSG(INIT, "BMT data is not correct %d\n", bmt_index);
++            continue;
++        } else
++        {
++            bmt.mapped_count = phys_table.header.mapped_count;
++            bmt.version = phys_table.header.version;
++            // bmt.bad_count = phys_table.header.bad_count;
++            memcpy(bmt.table, phys_table.table, bmt.mapped_count * sizeof(bmt_entry));
++
++            MSG(INIT, "bmt found at block: %d, mapped block: %d\n", bmt_index, bmt.mapped_count);
++
++            for (i = 0; i < bmt.mapped_count; i++)
++            {
++                if (!nand_block_bad_bmt(OFFSET(bmt.table[i].bad_index)))
++                {
++                    MSG(INIT, "block 0x%x is not mark bad, should be power lost last time\n", bmt.table[i].bad_index);
++                    mark_block_bad_bmt(OFFSET(bmt.table[i].bad_index));
++                }
++            }
++
++            return bmt_index;
++        }
++    }
++
++    MSG(INIT, "bmt block not found!\n");
++    return 0;
++}
++
++/*************************************************************************
++* Find an available block and erase.                                     *
++* start_from_end: if true, find available block from end of flash.       *
++*                 else, find from the beginning of the pool              *
++* need_erase: if true, all unmapped blocks in the pool will be erased    *
++*************************************************************************/
++static int find_available_block(bool start_from_end)
++{
++    int i;                      // , j;
++    int block = system_block_count;
++    int direction;
++    // int avail_index = 0;
++    MSG(INIT, "Try to find_available_block, pool_erase: %d\n", pool_erased);
++
++    // erase all un-mapped blocks in pool when finding avaliable block
++    if (!pool_erased)
++    {
++        MSG(INIT, "Erase all un-mapped blocks in pool\n");
++        for (i = 0; i < bmt_block_count; i++)
++        {
++            if (block == bmt_block_index)
++            {
++                MSG(INIT, "Skip bmt block 0x%x\n", block);
++                continue;
++            }
++
++            if (nand_block_bad_bmt(OFFSET(block + i)))
++            {
++                MSG(INIT, "Skip bad block 0x%x\n", block + i);
++                continue;
++            }
++//if(block==4095)
++//{
++//  continue;
++//}
++
++            if (is_block_mapped(block + i) >= 0)
++            {
++                MSG(INIT, "Skip mapped block 0x%x\n", block + i);
++                continue;
++            }
++
++            if (!nand_erase_bmt(OFFSET(block + i)))
++            {
++                MSG(INIT, "Erase block 0x%x failed\n", block + i);
++                mark_block_bad_bmt(OFFSET(block + i));
++            }
++        }
++
++        pool_erased = 1;
++    }
++
++    if (start_from_end)
++    {
++        block = total_block_count - 1;
++        direction = -1;
++    } else
++    {
++        block = system_block_count;
++        direction = 1;
++    }
++
++    for (i = 0; i < bmt_block_count; i++, block += direction)
++    {
++        if (block == bmt_block_index)
++        {
++            MSG(INIT, "Skip bmt block 0x%x\n", block);
++            continue;
++        }
++
++        if (nand_block_bad_bmt(OFFSET(block)))
++        {
++            MSG(INIT, "Skip bad block 0x%x\n", block);
++            continue;
++        }
++
++        if (is_block_mapped(block) >= 0)
++        {
++            MSG(INIT, "Skip mapped block 0x%x\n", block);
++            continue;
++        }
++
++        MSG(INIT, "Find block 0x%x available\n", block);
++        return block;
++    }
++
++    return 0;
++}
++
++static unsigned short get_bad_index_from_oob(u8 * oob_buf)
++{
++    unsigned short index;
++    memcpy(&index, oob_buf + OOB_INDEX_OFFSET, OOB_INDEX_SIZE);
++
++    return index;
++}
++
++void set_bad_index_to_oob(u8 * oob, u16 index)
++{
++    memcpy(oob + OOB_INDEX_OFFSET, &index, sizeof(index));
++}
++
++static int migrate_from_bad(int offset, u8 * write_dat, u8 * write_oob)
++{
++    int page;
++    int error_block = offset / BLOCK_SIZE_BMT;
++    int error_page = (offset / PAGE_SIZE_BMT) % page_per_block;
++    int to_index;
++
++    memcpy(oob_buf, write_oob, MAX_OOB_SIZE);
++
++    to_index = find_available_block(false);
++
++    if (!to_index)
++    {
++        MSG(INIT, "Cannot find an available block for BMT\n");
++        return 0;
++    }
++
++    {                           // migrate error page first
++        MSG(INIT, "Write error page: 0x%x\n", error_page);
++        if (!write_dat)
++        {
++            nand_read_page_bmt(PAGE_ADDR(error_block) + error_page, dat_buf, NULL);
++            write_dat = dat_buf;
++        }
++        // memcpy(oob_buf, write_oob, MAX_OOB_SIZE);
++
++        if (error_block < system_block_count)
++            set_bad_index_to_oob(oob_buf, error_block); // if error_block is already a mapped block, original mapping index is in OOB.
++
++        if (!nand_write_page_bmt(PAGE_ADDR(to_index) + error_page, write_dat, oob_buf))
++        {
++            MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + error_page);
++            mark_block_bad_bmt(to_index);
++            return migrate_from_bad(offset, write_dat, write_oob);
++        }
++    }
++
++    for (page = 0; page < page_per_block; page++)
++    {
++        if (page != error_page)
++        {
++            nand_read_page_bmt(PAGE_ADDR(error_block) + page, dat_buf, oob_buf);
++            if (is_page_used(dat_buf, oob_buf))
++            {
++                if (error_block < system_block_count)
++                {
++                    set_bad_index_to_oob(oob_buf, error_block);
++                }
++                MSG(INIT, "\tmigrate page 0x%x to page 0x%x\n", PAGE_ADDR(error_block) + page, PAGE_ADDR(to_index) + page);
++                if (!nand_write_page_bmt(PAGE_ADDR(to_index) + page, dat_buf, oob_buf))
++                {
++                    MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + page);
++                    mark_block_bad_bmt(to_index);
++                    return migrate_from_bad(offset, write_dat, write_oob);
++                }
++            }
++        }
++    }
++
++    MSG(INIT, "Migrate from 0x%x to 0x%x done!\n", error_block, to_index);
++
++    return to_index;
++}
++
++static bool write_bmt_to_flash(u8 * dat, u8 * oob)
++{
++    bool need_erase = true;
++    MSG(INIT, "Try to write BMT\n");
++
++    if (bmt_block_index == 0)
++    {
++        // if we don't have index, we don't need to erase found block as it has been erased in find_available_block()
++        need_erase = false;
++        if (!(bmt_block_index = find_available_block(true)))
++        {
++            MSG(INIT, "Cannot find an available block for BMT\n");
++            return false;
++        }
++    }
++
++    MSG(INIT, "Find BMT block: 0x%x\n", bmt_block_index);
++
++    // write bmt to flash
++    if (need_erase)
++    {
++        if (!nand_erase_bmt(OFFSET(bmt_block_index)))
++        {
++            MSG(INIT, "BMT block erase fail, mark bad: 0x%x\n", bmt_block_index);
++            mark_block_bad_bmt(OFFSET(bmt_block_index));
++            // bmt.bad_count++;
++
++            bmt_block_index = 0;
++            return write_bmt_to_flash(dat, oob);    // recursive call 
++        }
++    }
++
++    if (!nand_write_page_bmt(PAGE_ADDR(bmt_block_index), dat, oob))
++    {
++        MSG(INIT, "Write BMT data fail, need to write again\n");
++        mark_block_bad_bmt(OFFSET(bmt_block_index));
++        // bmt.bad_count++;
++
++        bmt_block_index = 0;
++        return write_bmt_to_flash(dat, oob);    // recursive call 
++    }
++
++    MSG(INIT, "Write BMT data to block 0x%x success\n", bmt_block_index);
++    return true;
++}
++
++/*******************************************************************
++* Reconstruct bmt, called when found bmt info doesn't match bad 
++* block info in flash.
++* 
++* Return NULL for failure
++*******************************************************************/
++bmt_struct *reconstruct_bmt(bmt_struct * bmt)
++{
++    int i;
++    int index = system_block_count;
++    unsigned short bad_index;
++    int mapped;
++
++    // init everything in BMT struct 
++    bmt->version = BMT_VERSION;
++    bmt->bad_count = 0;
++    bmt->mapped_count = 0;
++
++    memset(bmt->table, 0, bmt_block_count * sizeof(bmt_entry));
++
++    for (i = 0; i < bmt_block_count; i++, index++)
++    {
++        if (nand_block_bad_bmt(OFFSET(index)))
++        {
++            MSG(INIT, "Skip bad block: 0x%x\n", index);
++            // bmt->bad_count++;
++            continue;
++        }
++
++        MSG(INIT, "read page: 0x%x\n", PAGE_ADDR(index));
++        nand_read_page_bmt(PAGE_ADDR(index), dat_buf, oob_buf);
++        /* if (mtk_nand_read_page_hw(PAGE_ADDR(index), dat_buf))
++           {
++           MSG(INIT,  "Error when read block %d\n", bmt_block_index);
++           continue;
++           } */
++
++        if ((bad_index = get_bad_index_from_oob(oob_buf)) >= system_block_count)
++        {
++            MSG(INIT, "get bad index: 0x%x\n", bad_index);
++            if (bad_index != 0xFFFF)
++                MSG(INIT, "Invalid bad index found in block 0x%x, bad index 0x%x\n", index, bad_index);
++            continue;
++        }
++
++        MSG(INIT, "Block 0x%x is mapped to bad block: 0x%x\n", index, bad_index);
++
++        if (!nand_block_bad_bmt(OFFSET(bad_index)))
++        {
++            MSG(INIT, "\tbut block 0x%x is not marked as bad, invalid mapping\n", bad_index);
++            continue;           // no need to erase here, it will be erased later when trying to write BMT
++        }
++
++        if ((mapped = is_block_mapped(bad_index)) >= 0)
++        {
++            MSG(INIT, "bad block 0x%x is mapped to 0x%x, should be caused by power lost, replace with one\n", bmt->table[mapped].bad_index, bmt->table[mapped].mapped_index);
++            bmt->table[mapped].mapped_index = index;    // use new one instead.
++        } else
++        {
++            // add mapping to BMT
++            bmt->table[bmt->mapped_count].bad_index = bad_index;
++            bmt->table[bmt->mapped_count].mapped_index = index;
++            bmt->mapped_count++;
++        }
++
++        MSG(INIT, "Add mapping: 0x%x -> 0x%x to BMT\n", bad_index, index);
++
++    }
++
++    MSG(INIT, "Scan replace pool done, mapped block: %d\n", bmt->mapped_count);
++    // dump_bmt_info(bmt);
++
++    // fill NAND BMT buffer
++    memset(oob_buf, 0xFF, sizeof(oob_buf));
++    fill_nand_bmt_buffer(bmt, dat_buf, oob_buf);
++
++    // write BMT back
++    if (!write_bmt_to_flash(dat_buf, oob_buf))
++    {
++        MSG(INIT, "TRAGEDY: cannot find a place to write BMT!!!!\n");
++    }
++
++    return bmt;
++}
++
++/*******************************************************************
++* [BMT Interface]
++*
++* Description:
++*   Init bmt from nand. Reconstruct if not found or data error
++*
++* Parameter:
++*   size: size of bmt and replace pool
++* 
++* Return: 
++*   NULL for failure, and a bmt struct for success
++*******************************************************************/
++bmt_struct *init_bmt(struct nand_chip * chip, int size)
++{
++    struct mtk_nand_host *host;
++
++    if (size > 0 && size < MAX_BMT_SIZE)
++    {
++        MSG(INIT, "Init bmt table, size: %d\n", size);
++        bmt_block_count = size;
++    } else
++    {
++        MSG(INIT, "Invalid bmt table size: %d\n", size);
++        return NULL;
++    }
++    nand_chip_bmt = chip;
++    system_block_count = chip->chipsize >> chip->phys_erase_shift;
++    total_block_count = bmt_block_count + system_block_count;
++    page_per_block = BLOCK_SIZE_BMT / PAGE_SIZE_BMT;
++    host = (struct mtk_nand_host *)chip->priv;
++    mtd_bmt = &host->mtd;
++
++    MSG(INIT, "mtd_bmt: %p, nand_chip_bmt: %p\n", mtd_bmt, nand_chip_bmt);
++    MSG(INIT, "bmt count: %d, system count: %d\n", bmt_block_count, system_block_count);
++
++    // set this flag, and unmapped block in pool will be erased.
++    pool_erased = 0;
++    memset(bmt.table, 0, size * sizeof(bmt_entry));
++    if ((bmt_block_index = load_bmt_data(system_block_count, size)))
++    {
++        MSG(INIT, "Load bmt data success @ block 0x%x\n", bmt_block_index);
++        dump_bmt_info(&bmt);
++        return &bmt;
++    } else
++    {
++        MSG(INIT, "Load bmt data fail, need re-construct!\n");
++#ifndef __UBOOT_NAND__            // BMT is not re-constructed in UBOOT.
++        if (reconstruct_bmt(&bmt))
++            return &bmt;
++        else
++#endif
++            return NULL;
++    }
++}
++
++/*******************************************************************
++* [BMT Interface]
++*
++* Description:
++*   Update BMT.
++*
++* Parameter:
++*   offset: update block/page offset.
++*   reason: update reason, see update_reason_t for reason.
++*   dat/oob: data and oob buffer for write fail.
++* 
++* Return: 
++*   Return true for success, and false for failure.
++*******************************************************************/
++bool update_bmt(u32 offset, update_reason_t reason, u8 * dat, u8 * oob)
++{
++    int map_index;
++    int orig_bad_block = -1;
++    // int bmt_update_index;
++    int i;
++    int bad_index = offset / BLOCK_SIZE_BMT;
++
++#ifndef MTK_NAND_BMT
++	return false;
++#endif
++    if (reason == UPDATE_WRITE_FAIL)
++    {
++        MSG(INIT, "Write fail, need to migrate\n");
++        if (!(map_index = migrate_from_bad(offset, dat, oob)))
++        {
++            MSG(INIT, "migrate fail\n");
++            return false;
++        }
++    } else
++    {
++        if (!(map_index = find_available_block(false)))
++        {
++            MSG(INIT, "Cannot find block in pool\n");
++            return false;
++        }
++    }
++
++    // now let's update BMT
++    if (bad_index >= system_block_count)    // mapped block become bad, find original bad block
++    {
++        for (i = 0; i < bmt_block_count; i++)
++        {
++            if (bmt.table[i].mapped_index == bad_index)
++            {
++                orig_bad_block = bmt.table[i].bad_index;
++                break;
++            }
++        }
++        // bmt.bad_count++;
++        MSG(INIT, "Mapped block becomes bad, orig bad block is 0x%x\n", orig_bad_block);
++
++        bmt.table[i].mapped_index = map_index;
++    } else
++    {
++        bmt.table[bmt.mapped_count].mapped_index = map_index;
++        bmt.table[bmt.mapped_count].bad_index = bad_index;
++        bmt.mapped_count++;
++    }
++
++    memset(oob_buf, 0xFF, sizeof(oob_buf));
++    fill_nand_bmt_buffer(&bmt, dat_buf, oob_buf);
++    if (!write_bmt_to_flash(dat_buf, oob_buf))
++        return false;
++
++    mark_block_bad_bmt(offset);
++
++    return true;
++}
++
++/*******************************************************************
++* [BMT Interface]
++*
++* Description:
++*   Given an block index, return mapped index if it's mapped, else 
++*   return given index.
++*
++* Parameter:
++*   index: given an block index. This value cannot exceed 
++*   system_block_count.
++*
++* Return NULL for failure
++*******************************************************************/
++u16 get_mapping_block_index(int index)
++{
++    int i;
++#ifndef MTK_NAND_BMT
++	return index;
++#endif
++    if (index > system_block_count)
++    {
++        return index;
++    }
++
++    for (i = 0; i < bmt.mapped_count; i++)
++    {
++        if (bmt.table[i].bad_index == index)
++        {
++            return bmt.table[i].mapped_index;
++        }
++    }
++
++    return index;
++}
++#ifdef __KERNEL_NAND__
++EXPORT_SYMBOL_GPL(init_bmt);
++EXPORT_SYMBOL_GPL(update_bmt);
++EXPORT_SYMBOL_GPL(get_mapping_block_index);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("MediaTek");
++MODULE_DESCRIPTION("Bad Block mapping management for MediaTek NAND Flash Driver");
++#endif
+--- /dev/null
++++ b/drivers/mtd/nand/bmt.h
+@@ -0,0 +1,80 @@
++#ifndef __BMT_H__
++#define __BMT_H__
++
++#include "nand_def.h"
++
++#if defined(__PRELOADER_NAND__)
++
++#include "nand.h"
++
++#elif defined(__UBOOT_NAND__)
++
++#include <linux/mtd/nand.h>
++#include "mtk_nand.h"
++
++#elif defined(__KERNEL_NAND__)
++
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/module.h>
++#include "mtk_nand.h"
++
++#endif
++
++
++#define MAX_BMT_SIZE        (0x80)
++#define BMT_VERSION         (1) // initial version
++
++#define MAIN_SIGNATURE_OFFSET   (0)
++#define OOB_SIGNATURE_OFFSET    (1)
++#define OOB_INDEX_OFFSET        (29)
++#define OOB_INDEX_SIZE          (2)
++#define FAKE_INDEX              (0xAAAA)
++
++typedef struct _bmt_entry_
++{
++    u16 bad_index;              // bad block index
++    u16 mapped_index;           // mapping block index in the replace pool
++} bmt_entry;
++
++typedef enum
++{
++    UPDATE_ERASE_FAIL,
++    UPDATE_WRITE_FAIL,
++    UPDATE_UNMAPPED_BLOCK,
++    UPDATE_REASON_COUNT,
++} update_reason_t;
++
++typedef struct
++{
++    bmt_entry table[MAX_BMT_SIZE];
++    u8 version;
++    u8 mapped_count;            // mapped block count in pool
++    u8 bad_count;               // bad block count in pool. Not used in V1
++} bmt_struct;
++
++/***************************************************************
++*                                                              *
++* Interface BMT need to use                                    *
++*                                                              *
++***************************************************************/
++extern bool mtk_nand_exec_read_page(struct mtd_info *mtd, u32 row, u32 page_size, u8 * dat, u8 * oob);
++extern int mtk_nand_block_bad_hw(struct mtd_info *mtd, loff_t ofs);
++extern int mtk_nand_erase_hw(struct mtd_info *mtd, int page);
++extern int mtk_nand_block_markbad_hw(struct mtd_info *mtd, loff_t ofs);
++extern int mtk_nand_exec_write_page(struct mtd_info *mtd, u32 row, u32 page_size, u8 * dat, u8 * oob);
++
++
++/***************************************************************
++*                                                              *
++* Different function interface for preloader/uboot/kernel      *
++*                                                              *
++***************************************************************/
++void set_bad_index_to_oob(u8 * oob, u16 index);
++
++
++bmt_struct *init_bmt(struct nand_chip *nand, int size);
++bool update_bmt(u32 offset, update_reason_t reason, u8 * dat, u8 * oob);
++unsigned short get_mapping_block_index(int index);
++
++#endif                          // #ifndef __BMT_H__
+--- /dev/null
++++ b/drivers/mtd/nand/dev-nand.c
+@@ -0,0 +1,63 @@
++#include <linux/init.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++
++#include "mt6575_typedefs.h"
++
++#define RALINK_NAND_CTRL_BASE               0xBE003000
++#define NFI_base    RALINK_NAND_CTRL_BASE
++#define RALINK_NANDECC_CTRL_BASE    0xBE003800
++#define NFIECC_base RALINK_NANDECC_CTRL_BASE
++#define MT7621_NFI_IRQ_ID		SURFBOARDINT_NAND
++#define MT7621_NFIECC_IRQ_ID	SURFBOARDINT_NAND_ECC
++
++#define SURFBOARDINT_NAND 22
++#define SURFBOARDINT_NAND_ECC 23
++
++static struct resource MT7621_resource_nand[] = {
++        {
++                .start          = NFI_base,
++                .end            = NFI_base + 0x1A0,
++                .flags          = IORESOURCE_MEM,
++        },
++        {
++                .start          = NFIECC_base,
++                .end            = NFIECC_base + 0x150,
++                .flags          = IORESOURCE_MEM,
++        },
++        {
++                .start          = MT7621_NFI_IRQ_ID,
++                .flags          = IORESOURCE_IRQ,
++        },
++        {
++                .start          = MT7621_NFIECC_IRQ_ID,
++                .flags          = IORESOURCE_IRQ,
++        },
++};
++
++static struct platform_device MT7621_nand_dev = {
++    .name = "MT7621-NAND",
++    .id   = 0,
++        .num_resources  = ARRAY_SIZE(MT7621_resource_nand),
++        .resource               = MT7621_resource_nand,
++    .dev            = {
++        .platform_data = &mt7621_nand_hw,
++    },
++};
++
++
++int __init mtk_nand_register(void)
++{
++
++	int retval = 0;
++
++	retval = platform_device_register(&MT7621_nand_dev);
++	if (retval != 0) {
++		printk(KERN_ERR "register nand device fail\n");
++		return retval;
++	}
++
++
++	return retval;
++}
++arch_initcall(mtk_nand_register);
+--- /dev/null
++++ b/drivers/mtd/nand/mt6575_typedefs.h
+@@ -0,0 +1,340 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ */
++/* MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++/*****************************************************************************
++*  Copyright Statement:
++*  --------------------
++*  This software is protected by Copyright and the information contained
++*  herein is confidential. The software may not be copied and the information
++*  contained herein may not be used or disclosed except with the written
++*  permission of MediaTek Inc. (C) 2008
++*
++*  BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++*  THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++*  RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
++*  AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++*  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++*  NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++*  SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++*  SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
++*  THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
++*  NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
++*  SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
++*
++*  BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
++*  LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++*  AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++*  OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
++*  MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++*
++*  THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
++*  WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
++*  LAWS PRINCIPLES.  ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
++*  RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
++*  THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
++*
++*****************************************************************************/
++
++#ifndef _MT6575_TYPEDEFS_H
++#define _MT6575_TYPEDEFS_H
++
++#if defined (__KERNEL_NAND__)
++#include <linux/bug.h>
++#else
++#define true 		1 
++#define false 		0  
++#define bool		u8
++#endif
++
++// ---------------------------------------------------------------------------
++//  Basic Type Definitions
++// ---------------------------------------------------------------------------
++
++typedef volatile unsigned char  *P_kal_uint8;
++typedef volatile unsigned short *P_kal_uint16;
++typedef volatile unsigned int   *P_kal_uint32;
++
++typedef long            LONG;
++typedef unsigned char   UBYTE;
++typedef short           SHORT;
++
++typedef signed char     kal_int8;
++typedef signed short    kal_int16;
++typedef signed int      kal_int32;
++typedef long long       kal_int64;
++typedef unsigned char   kal_uint8;
++typedef unsigned short  kal_uint16;
++typedef unsigned int    kal_uint32;
++typedef unsigned long long  kal_uint64;
++typedef char            kal_char;
++
++typedef unsigned int            *UINT32P;
++typedef volatile unsigned short *UINT16P;
++typedef volatile unsigned char  *UINT8P;
++typedef unsigned char           *U8P;
++
++typedef volatile unsigned char  *P_U8;
++typedef volatile signed char    *P_S8;
++typedef volatile unsigned short *P_U16;
++typedef volatile signed short   *P_S16;
++typedef volatile unsigned int   *P_U32;
++typedef volatile signed int     *P_S32;
++typedef unsigned long long      *P_U64;
++typedef signed long long        *P_S64;
++
++typedef unsigned char       U8;
++typedef signed char         S8;
++typedef unsigned short      U16;
++typedef signed short        S16;
++typedef unsigned int        U32;
++typedef signed int          S32;
++typedef unsigned long long  U64;
++typedef signed long long    S64;
++//typedef unsigned char       bool;
++
++typedef unsigned char   UINT8;
++typedef unsigned short  UINT16;
++typedef unsigned int    UINT32;
++typedef unsigned short  USHORT;
++typedef signed char     INT8;
++typedef signed short    INT16;
++typedef signed int      INT32;
++typedef unsigned int    DWORD;
++typedef void            VOID;
++typedef unsigned char   BYTE;
++typedef float           FLOAT;
++
++typedef char           *LPCSTR;
++typedef short          *LPWSTR;
++
++
++// ---------------------------------------------------------------------------
++//  Constants
++// ---------------------------------------------------------------------------
++
++#define IMPORT  EXTERN
++#ifndef __cplusplus
++  #define EXTERN  extern
++#else
++  #define EXTERN  extern "C"
++#endif
++#define LOCAL     static
++#define GLOBAL
++#define EXPORT    GLOBAL
++
++#define EQ        ==
++#define NEQ       !=
++#define AND       &&
++#define OR        ||
++#define XOR(A,B)  ((!(A) AND (B)) OR ((A) AND !(B)))
++
++#ifndef FALSE
++  #define FALSE (0)
++#endif
++
++#ifndef TRUE
++  #define TRUE  (1)
++#endif
++
++#ifndef NULL
++  #define NULL  (0)
++#endif
++
++//enum boolean {false, true};
++enum {RX, TX, NONE};
++
++#ifndef BOOL
++typedef unsigned char  BOOL;
++#endif
++
++typedef enum {
++   KAL_FALSE = 0,
++   KAL_TRUE  = 1,
++} kal_bool;
++
++
++// ---------------------------------------------------------------------------
++//  Type Casting
++// ---------------------------------------------------------------------------
++
++#define AS_INT32(x)     (*(INT32 *)((void*)x))
++#define AS_INT16(x)     (*(INT16 *)((void*)x))
++#define AS_INT8(x)      (*(INT8  *)((void*)x))
++
++#define AS_UINT32(x)    (*(UINT32 *)((void*)x))
++#define AS_UINT16(x)    (*(UINT16 *)((void*)x))
++#define AS_UINT8(x)     (*(UINT8  *)((void*)x))
++
++
++// ---------------------------------------------------------------------------
++//  Register Manipulations
++// ---------------------------------------------------------------------------
++
++#define READ_REGISTER_UINT32(reg) \
++    (*(volatile UINT32 * const)(reg))
++
++#define WRITE_REGISTER_UINT32(reg, val) \
++    (*(volatile UINT32 * const)(reg)) = (val)
++
++#define READ_REGISTER_UINT16(reg) \
++    (*(volatile UINT16 * const)(reg))
++
++#define WRITE_REGISTER_UINT16(reg, val) \
++    (*(volatile UINT16 * const)(reg)) = (val)
++
++#define READ_REGISTER_UINT8(reg) \
++    (*(volatile UINT8 * const)(reg))
++
++#define WRITE_REGISTER_UINT8(reg, val) \
++    (*(volatile UINT8 * const)(reg)) = (val)
++
++#define INREG8(x)           READ_REGISTER_UINT8((UINT8*)((void*)(x)))
++#define OUTREG8(x, y)       WRITE_REGISTER_UINT8((UINT8*)((void*)(x)), (UINT8)(y))
++#define SETREG8(x, y)       OUTREG8(x, INREG8(x)|(y))
++#define CLRREG8(x, y)       OUTREG8(x, INREG8(x)&~(y))
++#define MASKREG8(x, y, z)   OUTREG8(x, (INREG8(x)&~(y))|(z))
++
++#define INREG16(x)          READ_REGISTER_UINT16((UINT16*)((void*)(x)))
++#define OUTREG16(x, y)      WRITE_REGISTER_UINT16((UINT16*)((void*)(x)),(UINT16)(y))
++#define SETREG16(x, y)      OUTREG16(x, INREG16(x)|(y))
++#define CLRREG16(x, y)      OUTREG16(x, INREG16(x)&~(y))
++#define MASKREG16(x, y, z)  OUTREG16(x, (INREG16(x)&~(y))|(z))
++
++#define INREG32(x)          READ_REGISTER_UINT32((UINT32*)((void*)(x)))
++#define OUTREG32(x, y)      WRITE_REGISTER_UINT32((UINT32*)((void*)(x)), (UINT32)(y))
++#define SETREG32(x, y)      OUTREG32(x, INREG32(x)|(y))
++#define CLRREG32(x, y)      OUTREG32(x, INREG32(x)&~(y))
++#define MASKREG32(x, y, z)  OUTREG32(x, (INREG32(x)&~(y))|(z))
++
++
++#define DRV_Reg8(addr)              INREG8(addr)
++#define DRV_WriteReg8(addr, data)   OUTREG8(addr, data)
++#define DRV_SetReg8(addr, data)     SETREG8(addr, data)
++#define DRV_ClrReg8(addr, data)     CLRREG8(addr, data)
++
++#define DRV_Reg16(addr)             INREG16(addr)
++#define DRV_WriteReg16(addr, data)  OUTREG16(addr, data)
++#define DRV_SetReg16(addr, data)    SETREG16(addr, data)
++#define DRV_ClrReg16(addr, data)    CLRREG16(addr, data)
++
++#define DRV_Reg32(addr)             INREG32(addr)
++#define DRV_WriteReg32(addr, data)  OUTREG32(addr, data)
++#define DRV_SetReg32(addr, data)    SETREG32(addr, data)
++#define DRV_ClrReg32(addr, data)    CLRREG32(addr, data)
++
++// !!! DEPRECATED, WILL BE REMOVED LATER !!!
++#define DRV_Reg(addr)               DRV_Reg16(addr)
++#define DRV_WriteReg(addr, data)    DRV_WriteReg16(addr, data)
++#define DRV_SetReg(addr, data)      DRV_SetReg16(addr, data)
++#define DRV_ClrReg(addr, data)      DRV_ClrReg16(addr, data)
++
++
++// ---------------------------------------------------------------------------
++//  Compiler Time Deduction Macros
++// ---------------------------------------------------------------------------
++
++#define _MASK_OFFSET_1(x, n)  ((x) & 0x1) ? (n) :
++#define _MASK_OFFSET_2(x, n)  _MASK_OFFSET_1((x), (n)) _MASK_OFFSET_1((x) >> 1, (n) + 1)
++#define _MASK_OFFSET_4(x, n)  _MASK_OFFSET_2((x), (n)) _MASK_OFFSET_2((x) >> 2, (n) + 2)
++#define _MASK_OFFSET_8(x, n)  _MASK_OFFSET_4((x), (n)) _MASK_OFFSET_4((x) >> 4, (n) + 4)
++#define _MASK_OFFSET_16(x, n) _MASK_OFFSET_8((x), (n)) _MASK_OFFSET_8((x) >> 8, (n) + 8)
++#define _MASK_OFFSET_32(x, n) _MASK_OFFSET_16((x), (n)) _MASK_OFFSET_16((x) >> 16, (n) + 16)
++
++#define MASK_OFFSET_ERROR (0xFFFFFFFF)
++
++#define MASK_OFFSET(x) (_MASK_OFFSET_32(x, 0) MASK_OFFSET_ERROR)
++
++
++// ---------------------------------------------------------------------------
++//  Assertions
++// ---------------------------------------------------------------------------
++
++#ifndef ASSERT
++    #define ASSERT(expr)        BUG_ON(!(expr))
++#endif
++
++#ifndef NOT_IMPLEMENTED
++    #define NOT_IMPLEMENTED()   BUG_ON(1)
++#endif    
++
++#define STATIC_ASSERT(pred)         STATIC_ASSERT_X(pred, __LINE__)
++#define STATIC_ASSERT_X(pred, line) STATIC_ASSERT_XX(pred, line)
++#define STATIC_ASSERT_XX(pred, line) \
++    extern char assertion_failed_at_##line[(pred) ? 1 : -1]
++
++// ---------------------------------------------------------------------------
++//  Resolve Compiler Warnings
++// ---------------------------------------------------------------------------
++
++#define NOT_REFERENCED(x)   { (x) = (x); }
++
++
++// ---------------------------------------------------------------------------
++//  Utilities
++// ---------------------------------------------------------------------------
++
++#define MAXIMUM(A,B)       (((A)>(B))?(A):(B))
++#define MINIMUM(A,B)       (((A)<(B))?(A):(B))
++
++#define ARY_SIZE(x) (sizeof((x)) / sizeof((x[0])))
++#define DVT_DELAYMACRO(u4Num)                                            \
++{                                                                        \
++    UINT32 u4Count = 0 ;                                                 \
++    for (u4Count = 0; u4Count < u4Num; u4Count++ );                      \
++}                                                                        \
++
++#define    A68351B      0
++#define    B68351B      1
++#define    B68351D      2
++#define    B68351E      3
++#define    UNKNOWN_IC_VERSION   0xFF
++
++/* NAND driver */
++struct mtk_nand_host_hw {
++    unsigned int nfi_bus_width;		    /* NFI_BUS_WIDTH */ 
++	unsigned int nfi_access_timing;		/* NFI_ACCESS_TIMING */  
++	unsigned int nfi_cs_num;			/* NFI_CS_NUM */
++	unsigned int nand_sec_size;			/* NAND_SECTOR_SIZE */
++	unsigned int nand_sec_shift;		/* NAND_SECTOR_SHIFT */
++	unsigned int nand_ecc_size;
++	unsigned int nand_ecc_bytes;
++	unsigned int nand_ecc_mode;
++};
++extern struct mtk_nand_host_hw mt7621_nand_hw;
++extern unsigned int	CFG_BLOCKSIZE;
++
++#endif  // _MT6575_TYPEDEFS_H
++
+--- /dev/null
++++ b/drivers/mtd/nand/mtk_nand.c
+@@ -0,0 +1,2304 @@
++/******************************************************************************
++* mtk_nand.c - MTK NAND Flash Device Driver
++ *
++* Copyright 2009-2012 MediaTek Co.,Ltd.
++ *
++* DESCRIPTION:
++* 	This file provid the other drivers nand relative functions
++ *
++* modification history
++* ----------------------------------------
++* v3.0, 11 Feb 2010, mtk
++* ----------------------------------------
++******************************************************************************/
++#include "nand_def.h"
++#include <linux/slab.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/delay.h>
++#include <linux/errno.h>
++#include <linux/sched.h>
++#include <linux/types.h>
++#include <linux/wait.h>
++#include <linux/spinlock.h>
++#include <linux/interrupt.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++#include <linux/mtd/nand_ecc.h>
++#include <linux/dma-mapping.h>
++#include <linux/jiffies.h>
++#include <linux/platform_device.h>
++#include <linux/proc_fs.h>
++#include <linux/time.h>
++#include <linux/mm.h>
++#include <asm/io.h>
++#include <asm/cacheflush.h>
++#include <asm/uaccess.h>
++#include <linux/miscdevice.h>
++#include "mtk_nand.h"
++#include "nand_device_list.h"
++
++#include "bmt.h"
++#include "partition.h"
++
++unsigned int CFG_BLOCKSIZE;
++
++static int shift_on_bbt = 0;
++extern void nand_bbt_set(struct mtd_info *mtd, int page, int flag);
++extern int nand_bbt_get(struct mtd_info *mtd, int page);
++int mtk_nand_read_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page);
++
++static const char * const probe_types[] = { "cmdlinepart", "ofpart", NULL };
++
++#define NAND_CMD_STATUS_MULTI  0x71
++
++void show_stack(struct task_struct *tsk, unsigned long *sp);
++extern void mt_irq_set_sens(unsigned int irq, unsigned int sens);
++extern void mt_irq_set_polarity(unsigned int irq,unsigned int polarity);
++
++struct mtk_nand_host	mtk_nand_host;	/* include mtd_info and nand_chip structs */
++struct mtk_nand_host_hw mt7621_nand_hw = {
++    .nfi_bus_width          = 8,
++    .nfi_access_timing      = NFI_DEFAULT_ACCESS_TIMING,
++    .nfi_cs_num             = NFI_CS_NUM,
++    .nand_sec_size          = 512,
++    .nand_sec_shift         = 9,
++    .nand_ecc_size          = 2048,
++    .nand_ecc_bytes         = 32,
++    .nand_ecc_mode          = NAND_ECC_HW,
++};
++
++
++/*******************************************************************************
++ * Gloable Varible Definition
++ *******************************************************************************/
++
++#define NFI_ISSUE_COMMAND(cmd, col_addr, row_addr, col_num, row_num) \
++   do { \
++      DRV_WriteReg(NFI_CMD_REG16,cmd);\
++      while (DRV_Reg32(NFI_STA_REG32) & STA_CMD_STATE);\
++      DRV_WriteReg32(NFI_COLADDR_REG32, col_addr);\
++      DRV_WriteReg32(NFI_ROWADDR_REG32, row_addr);\
++      DRV_WriteReg(NFI_ADDRNOB_REG16, col_num | (row_num<<ADDR_ROW_NOB_SHIFT));\
++      while (DRV_Reg32(NFI_STA_REG32) & STA_ADDR_STATE);\
++   }while(0);
++
++//-------------------------------------------------------------------------------
++static struct NAND_CMD g_kCMD;
++static u32 g_u4ChipVer;
++bool g_bInitDone;
++static bool g_bcmdstatus;
++static u32 g_value = 0;
++static int g_page_size;
++
++BOOL g_bHwEcc = true;
++
++
++static u8 *local_buffer_16_align;   // 16 byte aligned buffer, for HW issue
++static u8 local_buffer[4096 + 512];
++
++extern void nand_release_device(struct mtd_info *mtd);
++extern int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd, int new_state);
++
++#if defined(MTK_NAND_BMT)
++static bmt_struct *g_bmt;
++#endif
++struct mtk_nand_host *host;
++extern struct mtd_partition g_pasStatic_Partition[];
++int part_num = NUM_PARTITIONS;
++int manu_id;
++int dev_id;
++
++static u8 local_oob_buf[NAND_MAX_OOBSIZE];
++
++static u8 nand_badblock_offset = 0;
++
++void nand_enable_clock(void)
++{
++    //enable_clock(MT65XX_PDN_PERI_NFI, "NAND");
++}
++
++void nand_disable_clock(void)
++{
++    //disable_clock(MT65XX_PDN_PERI_NFI, "NAND");
++}
++
++static struct nand_ecclayout nand_oob_16 = {
++	.eccbytes = 8,
++	.eccpos = {8, 9, 10, 11, 12, 13, 14, 15},
++	.oobfree = {{1, 6}, {0, 0}}
++};
++
++struct nand_ecclayout nand_oob_64 = {
++	.eccbytes = 32,
++	.eccpos = {32, 33, 34, 35, 36, 37, 38, 39,
++		40, 41, 42, 43, 44, 45, 46, 47,
++		48, 49, 50, 51, 52, 53, 54, 55,
++		56, 57, 58, 59, 60, 61, 62, 63},
++	.oobfree = {{1, 7}, {9, 7}, {17, 7}, {25, 6}, {0, 0}}
++};
++
++struct nand_ecclayout nand_oob_128 = {
++	.eccbytes = 64,
++	.eccpos = {
++		64, 65, 66, 67, 68, 69, 70, 71,
++		72, 73, 74, 75, 76, 77, 78, 79,
++		80, 81, 82, 83, 84, 85, 86, 86,
++		88, 89, 90, 91, 92, 93, 94, 95,
++		96, 97, 98, 99, 100, 101, 102, 103,
++		104, 105, 106, 107, 108, 109, 110, 111,
++		112, 113, 114, 115, 116, 117, 118, 119,
++		120, 121, 122, 123, 124, 125, 126, 127},
++	.oobfree = {{1, 7}, {9, 7}, {17, 7}, {25, 7}, {33, 7}, {41, 7}, {49, 7}, {57, 6}}
++};
++
++flashdev_info devinfo;
++
++void dump_nfi(void)
++{
++}
++
++void dump_ecc(void)
++{
++}
++
++u32
++nand_virt_to_phys_add(u32 va)
++{
++	u32 pageOffset = (va & (PAGE_SIZE - 1));
++	pgd_t *pgd;
++	pmd_t *pmd;
++	pte_t *pte;
++	u32 pa;
++
++	if (virt_addr_valid(va))
++		return __virt_to_phys(va);
++
++	if (NULL == current) {
++		printk(KERN_ERR "[nand_virt_to_phys_add] ERROR ,current is NULL! \n");
++		return 0;
++	}
++
++	if (NULL == current->mm) {
++		printk(KERN_ERR "[nand_virt_to_phys_add] ERROR current->mm is NULL! tgid=0x%x, name=%s \n", current->tgid, current->comm);
++		return 0;
++	}
++
++	pgd = pgd_offset(current->mm, va);  /* what is tsk->mm */
++	if (pgd_none(*pgd) || pgd_bad(*pgd)) {
++		printk(KERN_ERR "[nand_virt_to_phys_add] ERROR, va=0x%x, pgd invalid! \n", va);
++		return 0;
++	}
++
++	pmd = pmd_offset((pud_t *)pgd, va);
++	if (pmd_none(*pmd) || pmd_bad(*pmd)) {
++		printk(KERN_ERR "[nand_virt_to_phys_add] ERROR, va=0x%x, pmd invalid! \n", va);
++		return 0;
++	}
++
++	pte = pte_offset_map(pmd, va);
++	if (pte_present(*pte)) {
++		pa = (pte_val(*pte) & (PAGE_MASK)) | pageOffset;
++		return pa;
++	}
++
++	printk(KERN_ERR "[nand_virt_to_phys_add] ERROR va=0x%x, pte invalid! \n", va);
++	return 0;
++}
++EXPORT_SYMBOL(nand_virt_to_phys_add);
++
++bool
++get_device_info(u16 id, u32 ext_id, flashdev_info * pdevinfo)
++{
++	u32 index;
++	for (index = 0; gen_FlashTable[index].id != 0; index++) {
++		if (id == gen_FlashTable[index].id && ext_id == gen_FlashTable[index].ext_id) {
++			pdevinfo->id = gen_FlashTable[index].id;
++			pdevinfo->ext_id = gen_FlashTable[index].ext_id;
++			pdevinfo->blocksize = gen_FlashTable[index].blocksize;
++			pdevinfo->addr_cycle = gen_FlashTable[index].addr_cycle;
++			pdevinfo->iowidth = gen_FlashTable[index].iowidth;
++			pdevinfo->timmingsetting = gen_FlashTable[index].timmingsetting;
++			pdevinfo->advancedmode = gen_FlashTable[index].advancedmode;
++			pdevinfo->pagesize = gen_FlashTable[index].pagesize;
++			pdevinfo->sparesize = gen_FlashTable[index].sparesize;
++			pdevinfo->totalsize = gen_FlashTable[index].totalsize;
++			memcpy(pdevinfo->devciename, gen_FlashTable[index].devciename, sizeof(pdevinfo->devciename));
++			printk(KERN_INFO "Device found in MTK table, ID: %x, EXT_ID: %x\n", id, ext_id);
++
++			goto find;
++		}
++	}
++
++find:
++	if (0 == pdevinfo->id) {
++		printk(KERN_INFO "Device not found, ID: %x\n", id);
++		return false;
++	} else {
++		return true;
++	}
++}
++
++static void
++ECC_Config(struct mtk_nand_host_hw *hw,u32 ecc_bit)
++{
++	u32 u4ENCODESize;
++	u32 u4DECODESize;
++	u32 ecc_bit_cfg = ECC_CNFG_ECC4;
++
++	switch(ecc_bit){
++	case 4:
++		ecc_bit_cfg = ECC_CNFG_ECC4;
++		break;
++	case 8:
++		ecc_bit_cfg = ECC_CNFG_ECC8;
++		break;
++	case 10:
++		ecc_bit_cfg = ECC_CNFG_ECC10;
++		break;
++	case 12:
++		ecc_bit_cfg = ECC_CNFG_ECC12;
++		break;
++	default:
++		break;
++	}
++	DRV_WriteReg16(ECC_DECCON_REG16, DEC_DE);
++	do {
++	} while (!DRV_Reg16(ECC_DECIDLE_REG16));
++
++	DRV_WriteReg16(ECC_ENCCON_REG16, ENC_DE);
++	do {
++	} while (!DRV_Reg32(ECC_ENCIDLE_REG32));
++
++	/* setup FDM register base */
++	DRV_WriteReg32(ECC_FDMADDR_REG32, NFI_FDM0L_REG32);
++
++	/* Sector + FDM */
++	u4ENCODESize = (hw->nand_sec_size + 8) << 3;
++	/* Sector + FDM + YAFFS2 meta data bits */
++	u4DECODESize = ((hw->nand_sec_size + 8) << 3) + ecc_bit * 13;
++
++	/* configure ECC decoder && encoder */
++	DRV_WriteReg32(ECC_DECCNFG_REG32, ecc_bit_cfg | DEC_CNFG_NFI | DEC_CNFG_EMPTY_EN | (u4DECODESize << DEC_CNFG_CODE_SHIFT));
++
++	DRV_WriteReg32(ECC_ENCCNFG_REG32, ecc_bit_cfg | ENC_CNFG_NFI | (u4ENCODESize << ENC_CNFG_MSG_SHIFT));
++	NFI_SET_REG32(ECC_DECCNFG_REG32, DEC_CNFG_EL);
++}
++
++static void
++ECC_Decode_Start(void)
++{
++	while (!(DRV_Reg16(ECC_DECIDLE_REG16) & DEC_IDLE))
++		;
++	DRV_WriteReg16(ECC_DECCON_REG16, DEC_EN);
++}
++
++static void
++ECC_Decode_End(void)
++{
++	while (!(DRV_Reg16(ECC_DECIDLE_REG16) & DEC_IDLE))
++		;
++	DRV_WriteReg16(ECC_DECCON_REG16, DEC_DE);
++}
++
++static void
++ECC_Encode_Start(void)
++{
++	while (!(DRV_Reg32(ECC_ENCIDLE_REG32) & ENC_IDLE))
++		;
++	mb();
++	DRV_WriteReg16(ECC_ENCCON_REG16, ENC_EN);
++}
++
++static void
++ECC_Encode_End(void)
++{
++	/* wait for device returning idle */
++	while (!(DRV_Reg32(ECC_ENCIDLE_REG32) & ENC_IDLE)) ;
++	mb();
++	DRV_WriteReg16(ECC_ENCCON_REG16, ENC_DE);
++}
++
++static bool
++mtk_nand_check_bch_error(struct mtd_info *mtd, u8 * pDataBuf, u32 u4SecIndex, u32 u4PageAddr)
++{
++	bool bRet = true;
++	u16 u2SectorDoneMask = 1 << u4SecIndex;
++	u32 u4ErrorNumDebug, i, u4ErrNum;
++	u32 timeout = 0xFFFF;
++	// int el;
++	u32 au4ErrBitLoc[6];
++	u32 u4ErrByteLoc, u4BitOffset;
++	u32 u4ErrBitLoc1th, u4ErrBitLoc2nd;
++
++	//4 // Wait for Decode Done
++	while (0 == (u2SectorDoneMask & DRV_Reg16(ECC_DECDONE_REG16))) {
++		timeout--;
++		if (0 == timeout)
++			return false;
++	}
++	/* We will manually correct the error bits in the last sector, not all the sectors of the page! */
++	memset(au4ErrBitLoc, 0x0, sizeof(au4ErrBitLoc));
++	u4ErrorNumDebug = DRV_Reg32(ECC_DECENUM_REG32);
++	u4ErrNum = DRV_Reg32(ECC_DECENUM_REG32) >> (u4SecIndex << 2);
++	u4ErrNum &= 0xF;
++
++	if (u4ErrNum) {
++		if (0xF == u4ErrNum) {
++			mtd->ecc_stats.failed++;
++			bRet = false;
++			//printk(KERN_ERR"UnCorrectable at PageAddr=%d\n", u4PageAddr);
++		} else {
++			for (i = 0; i < ((u4ErrNum + 1) >> 1); ++i) {
++				au4ErrBitLoc[i] = DRV_Reg32(ECC_DECEL0_REG32 + i);
++				u4ErrBitLoc1th = au4ErrBitLoc[i] & 0x1FFF;
++				if (u4ErrBitLoc1th < 0x1000) {
++					u4ErrByteLoc = u4ErrBitLoc1th / 8;
++					u4BitOffset = u4ErrBitLoc1th % 8;
++					pDataBuf[u4ErrByteLoc] = pDataBuf[u4ErrByteLoc] ^ (1 << u4BitOffset);
++					mtd->ecc_stats.corrected++;
++				} else {
++					mtd->ecc_stats.failed++;
++				}
++				u4ErrBitLoc2nd = (au4ErrBitLoc[i] >> 16) & 0x1FFF;
++				if (0 != u4ErrBitLoc2nd) {
++					if (u4ErrBitLoc2nd < 0x1000) {
++						u4ErrByteLoc = u4ErrBitLoc2nd / 8;
++						u4BitOffset = u4ErrBitLoc2nd % 8;
++						pDataBuf[u4ErrByteLoc] = pDataBuf[u4ErrByteLoc] ^ (1 << u4BitOffset);
++						mtd->ecc_stats.corrected++;
++					} else {
++						mtd->ecc_stats.failed++;
++						//printk(KERN_ERR"UnCorrectable High ErrLoc=%d\n", au4ErrBitLoc[i]);
++					}
++				}
++			}
++		}
++		if (0 == (DRV_Reg16(ECC_DECFER_REG16) & (1 << u4SecIndex)))
++			bRet = false;
++	}
++	return bRet;
++}
++
++static bool
++mtk_nand_RFIFOValidSize(u16 u2Size)
++{
++	u32 timeout = 0xFFFF;
++	while (FIFO_RD_REMAIN(DRV_Reg16(NFI_FIFOSTA_REG16)) < u2Size) {
++		timeout--;
++		if (0 == timeout)
++			return false;
++	}
++	return true;
++}
++
++static bool
++mtk_nand_WFIFOValidSize(u16 u2Size)
++{
++	u32 timeout = 0xFFFF;
++
++	while (FIFO_WR_REMAIN(DRV_Reg16(NFI_FIFOSTA_REG16)) > u2Size) {
++		timeout--;
++		if (0 == timeout)
++			return false;
++	}
++	return true;
++}
++
++static bool
++mtk_nand_status_ready(u32 u4Status)
++{
++	u32 timeout = 0xFFFF;
++
++	while ((DRV_Reg32(NFI_STA_REG32) & u4Status) != 0) {
++		timeout--;
++		if (0 == timeout)
++			return false;
++	}
++	return true;
++}
++
++static bool
++mtk_nand_reset(void)
++{
++	int timeout = 0xFFFF;
++	if (DRV_Reg16(NFI_MASTERSTA_REG16)) {
++		mb();
++		DRV_WriteReg16(NFI_CON_REG16, CON_FIFO_FLUSH | CON_NFI_RST);
++		while (DRV_Reg16(NFI_MASTERSTA_REG16)) {
++			timeout--;
++			if (!timeout)
++				MSG(INIT, "Wait for NFI_MASTERSTA timeout\n");
++		}
++	}
++	/* issue reset operation */
++	mb();
++	DRV_WriteReg16(NFI_CON_REG16, CON_FIFO_FLUSH | CON_NFI_RST);
++
++	return mtk_nand_status_ready(STA_NFI_FSM_MASK | STA_NAND_BUSY) && mtk_nand_RFIFOValidSize(0) && mtk_nand_WFIFOValidSize(0);
++}
++
++static void
++mtk_nand_set_mode(u16 u2OpMode)
++{
++	u16 u2Mode = DRV_Reg16(NFI_CNFG_REG16);
++	u2Mode &= ~CNFG_OP_MODE_MASK;
++	u2Mode |= u2OpMode;
++	DRV_WriteReg16(NFI_CNFG_REG16, u2Mode);
++}
++
++static void
++mtk_nand_set_autoformat(bool bEnable)
++{
++	if (bEnable)
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_AUTO_FMT_EN);
++	else
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AUTO_FMT_EN);
++}
++
++static void
++mtk_nand_configure_fdm(u16 u2FDMSize)
++{
++	NFI_CLN_REG16(NFI_PAGEFMT_REG16, PAGEFMT_FDM_MASK | PAGEFMT_FDM_ECC_MASK);
++	NFI_SET_REG16(NFI_PAGEFMT_REG16, u2FDMSize << PAGEFMT_FDM_SHIFT);
++	NFI_SET_REG16(NFI_PAGEFMT_REG16, u2FDMSize << PAGEFMT_FDM_ECC_SHIFT);
++}
++
++static void
++mtk_nand_configure_lock(void)
++{
++	u32 u4WriteColNOB = 2;
++	u32 u4WriteRowNOB = 3;
++	u32 u4EraseColNOB = 0;
++	u32 u4EraseRowNOB = 3;
++	DRV_WriteReg16(NFI_LOCKANOB_REG16,
++		(u4WriteColNOB << PROG_CADD_NOB_SHIFT) | (u4WriteRowNOB << PROG_RADD_NOB_SHIFT) | (u4EraseColNOB << ERASE_CADD_NOB_SHIFT) | (u4EraseRowNOB << ERASE_RADD_NOB_SHIFT));
++
++	if (CHIPVER_ECO_1 == g_u4ChipVer) {
++		int i;
++		for (i = 0; i < 16; ++i) {
++			DRV_WriteReg32(NFI_LOCK00ADD_REG32 + (i << 1), 0xFFFFFFFF);
++			DRV_WriteReg32(NFI_LOCK00FMT_REG32 + (i << 1), 0xFFFFFFFF);
++		}
++		//DRV_WriteReg16(NFI_LOCKANOB_REG16, 0x0);
++		DRV_WriteReg32(NFI_LOCKCON_REG32, 0xFFFFFFFF);
++		DRV_WriteReg16(NFI_LOCK_REG16, NFI_LOCK_ON);
++	}
++}
++
++static bool
++mtk_nand_pio_ready(void)
++{
++	int count = 0;
++	while (!(DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1)) {
++		count++;
++		if (count > 0xffff) {
++			printk("PIO_DIRDY timeout\n");
++			return false;
++		}
++	}
++
++	return true;
++}
++
++static bool
++mtk_nand_set_command(u16 command)
++{
++	mb();
++	DRV_WriteReg16(NFI_CMD_REG16, command);
++	return mtk_nand_status_ready(STA_CMD_STATE);
++}
++
++static bool
++mtk_nand_set_address(u32 u4ColAddr, u32 u4RowAddr, u16 u2ColNOB, u16 u2RowNOB)
++{
++	mb();
++	DRV_WriteReg32(NFI_COLADDR_REG32, u4ColAddr);
++	DRV_WriteReg32(NFI_ROWADDR_REG32, u4RowAddr);
++	DRV_WriteReg16(NFI_ADDRNOB_REG16, u2ColNOB | (u2RowNOB << ADDR_ROW_NOB_SHIFT));
++	return mtk_nand_status_ready(STA_ADDR_STATE);
++}
++
++static bool
++mtk_nand_check_RW_count(u16 u2WriteSize)
++{
++	u32 timeout = 0xFFFF;
++	u16 u2SecNum = u2WriteSize >> 9;
++
++	while (ADDRCNTR_CNTR(DRV_Reg16(NFI_ADDRCNTR_REG16)) < u2SecNum) {
++		timeout--;
++		if (0 == timeout) {
++			printk(KERN_INFO "[%s] timeout\n", __FUNCTION__);
++			return false;
++		}
++	}
++	return true;
++}
++
++static bool
++mtk_nand_ready_for_read(struct nand_chip *nand, u32 u4RowAddr, u32 u4ColAddr, bool full, u8 * buf)
++{
++	/* Reset NFI HW internal state machine and flush NFI in/out FIFO */
++	bool bRet = false;
++	u16 sec_num = 1 << (nand->page_shift - 9);
++	u32 col_addr = u4ColAddr;
++	u32 colnob = 2, rownob = devinfo.addr_cycle - 2;
++	if (nand->options & NAND_BUSWIDTH_16)
++		col_addr /= 2;
++
++	if (!mtk_nand_reset())
++		goto cleanup;
++	if (g_bHwEcc)	{
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++	} else	{
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++	}
++
++	mtk_nand_set_mode(CNFG_OP_READ);
++	NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN);
++	DRV_WriteReg16(NFI_CON_REG16, sec_num << CON_NFI_SEC_SHIFT);
++
++	if (full) {
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++
++		if (g_bHwEcc)
++			NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		else
++			NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++	} else {
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++	}
++
++	mtk_nand_set_autoformat(full);
++	if (full)
++		if (g_bHwEcc)
++			ECC_Decode_Start();
++	if (!mtk_nand_set_command(NAND_CMD_READ0))
++		goto cleanup;
++	if (!mtk_nand_set_address(col_addr, u4RowAddr, colnob, rownob))
++		goto cleanup;
++	if (!mtk_nand_set_command(NAND_CMD_READSTART))
++		goto cleanup;
++	if (!mtk_nand_status_ready(STA_NAND_BUSY))
++		goto cleanup;
++
++	bRet = true;
++
++cleanup:
++	return bRet;
++}
++
++static bool
++mtk_nand_ready_for_write(struct nand_chip *nand, u32 u4RowAddr, u32 col_addr, bool full, u8 * buf)
++{
++	bool bRet = false;
++	u32 sec_num = 1 << (nand->page_shift - 9);
++	u32 colnob = 2, rownob = devinfo.addr_cycle - 2;
++	if (nand->options & NAND_BUSWIDTH_16)
++		col_addr /= 2;
++
++	/* Reset NFI HW internal state machine and flush NFI in/out FIFO */
++	if (!mtk_nand_reset())
++		return false;
++
++	mtk_nand_set_mode(CNFG_OP_PRGM);
++
++	NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_READ_EN);
++
++	DRV_WriteReg16(NFI_CON_REG16, sec_num << CON_NFI_SEC_SHIFT);
++
++	if (full) {
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++		if (g_bHwEcc)
++			NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		else
++			NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++	} else {
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++	}
++
++	mtk_nand_set_autoformat(full);
++
++	if (full)
++		if (g_bHwEcc)
++			ECC_Encode_Start();
++
++	if (!mtk_nand_set_command(NAND_CMD_SEQIN))
++		goto cleanup;
++	//1 FIXED ME: For Any Kind of AddrCycle
++	if (!mtk_nand_set_address(col_addr, u4RowAddr, colnob, rownob))
++		goto cleanup;
++
++	if (!mtk_nand_status_ready(STA_NAND_BUSY))
++		goto cleanup;
++
++	bRet = true;
++
++cleanup:
++	return bRet;
++}
++
++static bool
++mtk_nand_check_dececc_done(u32 u4SecNum)
++{
++	u32 timeout, dec_mask;
++
++	timeout = 0xffff;
++	dec_mask = (1 << u4SecNum) - 1;
++	while ((dec_mask != DRV_Reg(ECC_DECDONE_REG16)) && timeout > 0)
++		timeout--;
++	if (timeout == 0) {
++		MSG(VERIFY, "ECC_DECDONE: timeout\n");
++		return false;
++	}
++	return true;
++}
++
++static bool
++mtk_nand_mcu_read_data(u8 * buf, u32 length)
++{
++	int timeout = 0xffff;
++	u32 i;
++	u32 *buf32 = (u32 *) buf;
++	if ((u32) buf % 4 || length % 4)
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++	else
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++
++	//DRV_WriteReg32(NFI_STRADDR_REG32, 0);
++	mb();
++	NFI_SET_REG16(NFI_CON_REG16, CON_NFI_BRD);
++
++	if ((u32) buf % 4 || length % 4) {
++		for (i = 0; (i < (length)) && (timeout > 0);) {
++			if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) {
++				*buf++ = (u8) DRV_Reg32(NFI_DATAR_REG32);
++				i++;
++			} else {
++				timeout--;
++			}
++			if (0 == timeout) {
++				printk(KERN_ERR "[%s] timeout\n", __FUNCTION__);
++				dump_nfi();
++				return false;
++			}
++		}
++	} else {
++		for (i = 0; (i < (length >> 2)) && (timeout > 0);) {
++			if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) {
++				*buf32++ = DRV_Reg32(NFI_DATAR_REG32);
++				i++;
++			} else {
++				timeout--;
++			}
++			if (0 == timeout) {
++				printk(KERN_ERR "[%s] timeout\n", __FUNCTION__);
++				dump_nfi();
++				return false;
++			}
++		}
++	}
++	return true;
++}
++
++static bool
++mtk_nand_read_page_data(struct mtd_info *mtd, u8 * pDataBuf, u32 u4Size)
++{
++	return mtk_nand_mcu_read_data(pDataBuf, u4Size);
++}
++
++static bool
++mtk_nand_mcu_write_data(struct mtd_info *mtd, const u8 * buf, u32 length)
++{
++	u32 timeout = 0xFFFF;
++	u32 i;
++	u32 *pBuf32;
++	NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++	mb();
++	NFI_SET_REG16(NFI_CON_REG16, CON_NFI_BWR);
++	pBuf32 = (u32 *) buf;
++
++	if ((u32) buf % 4 || length % 4)
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++	else
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++
++	if ((u32) buf % 4 || length % 4) {
++		for (i = 0; (i < (length)) && (timeout > 0);) {
++			if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) {
++				DRV_WriteReg32(NFI_DATAW_REG32, *buf++);
++				i++;
++			} else {
++				timeout--;
++			}
++			if (0 == timeout) {
++				printk(KERN_ERR "[%s] timeout\n", __FUNCTION__);
++				dump_nfi();
++				return false;
++			}
++		}
++	} else {
++		for (i = 0; (i < (length >> 2)) && (timeout > 0);) {
++			if (DRV_Reg16(NFI_PIO_DIRDY_REG16) & 1) {
++				DRV_WriteReg32(NFI_DATAW_REG32, *pBuf32++);
++				i++;
++			} else {
++				timeout--;
++			}
++			if (0 == timeout) {
++				printk(KERN_ERR "[%s] timeout\n", __FUNCTION__);
++				dump_nfi();
++				return false;
++			}
++		}
++	}
++
++	return true;
++}
++
++static bool
++mtk_nand_write_page_data(struct mtd_info *mtd, u8 * buf, u32 size)
++{
++	return mtk_nand_mcu_write_data(mtd, buf, size);
++}
++
++static void
++mtk_nand_read_fdm_data(u8 * pDataBuf, u32 u4SecNum)
++{
++	u32 i;
++	u32 *pBuf32 = (u32 *) pDataBuf;
++
++	if (pBuf32) {
++		for (i = 0; i < u4SecNum; ++i) {
++			*pBuf32++ = DRV_Reg32(NFI_FDM0L_REG32 + (i << 1));
++			*pBuf32++ = DRV_Reg32(NFI_FDM0M_REG32 + (i << 1));
++		}
++	}
++}
++
++static u8 fdm_buf[64];
++static void
++mtk_nand_write_fdm_data(struct nand_chip *chip, u8 * pDataBuf, u32 u4SecNum)
++{
++	u32 i, j;
++	u8 checksum = 0;
++	bool empty = true;
++	struct nand_oobfree *free_entry;
++	u32 *pBuf32;
++
++	memcpy(fdm_buf, pDataBuf, u4SecNum * 8);
++
++	free_entry = chip->ecc.layout->oobfree;
++	for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free_entry[i].length; i++) {
++		for (j = 0; j < free_entry[i].length; j++) {
++			if (pDataBuf[free_entry[i].offset + j] != 0xFF)
++				empty = false;
++			checksum ^= pDataBuf[free_entry[i].offset + j];
++		}
++	}
++
++	if (!empty) {
++		fdm_buf[free_entry[i - 1].offset + free_entry[i - 1].length] = checksum;
++	}
++
++	pBuf32 = (u32 *) fdm_buf;
++	for (i = 0; i < u4SecNum; ++i) {
++		DRV_WriteReg32(NFI_FDM0L_REG32 + (i << 1), *pBuf32++);
++		DRV_WriteReg32(NFI_FDM0M_REG32 + (i << 1), *pBuf32++);
++	}
++}
++
++static void
++mtk_nand_stop_read(void)
++{
++	NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BRD);
++	mtk_nand_reset();
++	if (g_bHwEcc)
++		ECC_Decode_End();
++	DRV_WriteReg16(NFI_INTR_EN_REG16, 0);
++}
++
++static void
++mtk_nand_stop_write(void)
++{
++	NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BWR);
++	if (g_bHwEcc)
++		ECC_Encode_End();
++	DRV_WriteReg16(NFI_INTR_EN_REG16, 0);
++}
++
++bool
++mtk_nand_exec_read_page(struct mtd_info *mtd, u32 u4RowAddr, u32 u4PageSize, u8 * pPageBuf, u8 * pFDMBuf)
++{
++	u8 *buf;
++	bool bRet = true;
++	struct nand_chip *nand = mtd->priv;
++	u32 u4SecNum = u4PageSize >> 9;
++
++	if (((u32) pPageBuf % 16) && local_buffer_16_align)
++		buf = local_buffer_16_align;
++	else
++		buf = pPageBuf;
++	if (mtk_nand_ready_for_read(nand, u4RowAddr, 0, true, buf)) {
++		int j;
++		for (j = 0 ; j < u4SecNum; j++) {
++			if (!mtk_nand_read_page_data(mtd, buf+j*512, 512))
++				bRet = false;
++			if(g_bHwEcc && !mtk_nand_check_dececc_done(j+1))
++				bRet = false;
++			if(g_bHwEcc && !mtk_nand_check_bch_error(mtd, buf+j*512, j, u4RowAddr))
++				bRet = false;
++		}
++		if (!mtk_nand_status_ready(STA_NAND_BUSY))
++			bRet = false;
++
++		mtk_nand_read_fdm_data(pFDMBuf, u4SecNum);
++		mtk_nand_stop_read();
++	}
++
++	if (buf == local_buffer_16_align)
++		memcpy(pPageBuf, buf, u4PageSize);
++
++	return bRet;
++}
++
++int
++mtk_nand_exec_write_page(struct mtd_info *mtd, u32 u4RowAddr, u32 u4PageSize, u8 * pPageBuf, u8 * pFDMBuf)
++{
++	struct nand_chip *chip = mtd->priv;
++	u32 u4SecNum = u4PageSize >> 9;
++	u8 *buf;
++	u8 status;
++
++	MSG(WRITE, "mtk_nand_exec_write_page, page: 0x%x\n", u4RowAddr);
++
++	if (((u32) pPageBuf % 16) && local_buffer_16_align) {
++		printk(KERN_INFO "Data buffer not 16 bytes aligned: %p\n", pPageBuf);
++		memcpy(local_buffer_16_align, pPageBuf, mtd->writesize);
++		buf = local_buffer_16_align;
++	} else
++		buf = pPageBuf;
++
++	if (mtk_nand_ready_for_write(chip, u4RowAddr, 0, true, buf)) {
++		mtk_nand_write_fdm_data(chip, pFDMBuf, u4SecNum);
++		(void)mtk_nand_write_page_data(mtd, buf, u4PageSize);
++		(void)mtk_nand_check_RW_count(u4PageSize);
++		mtk_nand_stop_write();
++		(void)mtk_nand_set_command(NAND_CMD_PAGEPROG);
++		while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY) ;
++	}
++
++	status = chip->waitfunc(mtd, chip);
++	if (status & NAND_STATUS_FAIL)
++		return -EIO;
++	return 0;
++}
++
++static int
++get_start_end_block(struct mtd_info *mtd, int block, int *start_blk, int *end_blk)
++{
++	struct nand_chip *chip = mtd->priv;
++	int i;
++
++	*start_blk = 0;
++        for (i = 0; i <= part_num; i++)
++        {
++		if (i == part_num)
++		{
++			// try the last reset partition
++			*end_blk = (chip->chipsize >> chip->phys_erase_shift) - 1;
++			if (*start_blk <= *end_blk)
++			{
++				if ((block >= *start_blk) && (block <= *end_blk))
++					break;
++			}
++		}
++		// skip All partition entry
++		else if (g_pasStatic_Partition[i].size == MTDPART_SIZ_FULL)
++		{
++			continue;
++		}
++                *end_blk = *start_blk + (g_pasStatic_Partition[i].size >> chip->phys_erase_shift) - 1;
++                if ((block >= *start_blk) && (block <= *end_blk))
++                        break;
++                *start_blk = *end_blk + 1;
++        }
++        if (*start_blk > *end_blk)
++	{
++                return -1;
++	}
++	return 0;
++}
++
++static int
++block_remap(struct mtd_info *mtd, int block)
++{
++	struct nand_chip *chip = mtd->priv;
++	int start_blk, end_blk;
++	int j, block_offset;
++	int bad_block = 0;
++
++	if (chip->bbt == NULL) {
++		printk("ERROR!! no bbt table for block_remap\n");
++		return -1;
++	}
++
++	if (get_start_end_block(mtd, block, &start_blk, &end_blk) < 0) {
++		printk("ERROR!! can not find start_blk and end_blk\n");
++		return -1;
++	}
++
++	block_offset = block - start_blk;
++	for (j = start_blk; j <= end_blk;j++) {
++		if (((chip->bbt[j >> 2] >> ((j<<1) & 0x6)) & 0x3) == 0x0) {
++			if (!block_offset)
++				break;
++			block_offset--;
++		} else {
++			bad_block++;
++		}
++	}
++	if (j <= end_blk) {
++		return j;
++	} else {
++		// remap to the bad block
++		for (j = end_blk; bad_block > 0; j--)
++		{
++			if (((chip->bbt[j >> 2] >> ((j<<1) & 0x6)) & 0x3) != 0x0)
++			{
++				bad_block--;
++				if (bad_block <= block_offset)
++					return j;
++			}
++		}
++	}
++
++	printk("Error!! block_remap error\n");
++	return -1;
++}
++
++int
++check_block_remap(struct mtd_info *mtd, int block)
++{
++	if (shift_on_bbt)
++		return  block_remap(mtd, block);
++	else
++		return block;
++}
++EXPORT_SYMBOL(check_block_remap);
++
++
++static int
++write_next_on_fail(struct mtd_info *mtd, char *write_buf, int page, int * to_blk)
++{
++	struct nand_chip *chip = mtd->priv;
++	int i, j, to_page = 0, first_page;
++	char *buf, *oob;
++	int start_blk = 0, end_blk;
++	int mapped_block;
++	int page_per_block_bit = chip->phys_erase_shift - chip->page_shift;
++	int block = page >> page_per_block_bit;
++
++	// find next available block in the same MTD partition 
++	mapped_block = block_remap(mtd, block);
++	if (mapped_block == -1)
++		return NAND_STATUS_FAIL;
++
++	get_start_end_block(mtd, block, &start_blk, &end_blk);
++
++	buf = kzalloc(mtd->writesize + mtd->oobsize, GFP_KERNEL | GFP_DMA);
++	if (buf == NULL)
++		return -1;
++
++	oob = buf + mtd->writesize;
++	for ((*to_blk) = block + 1; (*to_blk) <= end_blk ; (*to_blk)++)	{
++		if (nand_bbt_get(mtd, (*to_blk) << page_per_block_bit) == 0) {
++			int status;
++			status = mtk_nand_erase_hw(mtd, (*to_blk) << page_per_block_bit);
++			if (status & NAND_STATUS_FAIL)	{
++				mtk_nand_block_markbad_hw(mtd, (*to_blk) << chip->phys_erase_shift);
++				nand_bbt_set(mtd, (*to_blk) << page_per_block_bit, 0x3);
++			} else {
++				/* good block */
++				to_page = (*to_blk) << page_per_block_bit;
++				break;
++			}
++		}
++	}
++
++	if (!to_page) {
++		kfree(buf);
++		return -1;
++	}
++
++	first_page = (page >> page_per_block_bit) << page_per_block_bit;
++	for (i = 0; i < (1 << page_per_block_bit); i++) {
++		if ((first_page + i) != page) {
++			mtk_nand_read_oob_hw(mtd, chip, (first_page+i));
++			for (j = 0; j < mtd->oobsize; j++)
++				if (chip->oob_poi[j] != (unsigned char)0xff)
++					break;
++			if (j < mtd->oobsize)	{
++				mtk_nand_exec_read_page(mtd, (first_page+i), mtd->writesize, buf, oob);
++				memset(oob, 0xff, mtd->oobsize);
++				if (mtk_nand_exec_write_page(mtd, to_page + i, mtd->writesize, (u8 *)buf, oob) != 0) {
++					int ret, new_blk = 0;
++					nand_bbt_set(mtd, to_page, 0x3);
++					ret =  write_next_on_fail(mtd, buf, to_page + i, &new_blk);
++					if (ret) {
++						kfree(buf);
++						mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift);
++						return ret;
++					}
++					mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift);
++					*to_blk = new_blk;
++					to_page = ((*to_blk) <<  page_per_block_bit);
++				}
++			}
++		} else {
++			memset(chip->oob_poi, 0xff, mtd->oobsize);
++			if (mtk_nand_exec_write_page(mtd, to_page + i, mtd->writesize, (u8 *)write_buf, chip->oob_poi) != 0) {
++				int ret, new_blk = 0;
++				nand_bbt_set(mtd, to_page, 0x3);
++				ret =  write_next_on_fail(mtd, write_buf, to_page + i, &new_blk);
++				if (ret) {
++					kfree(buf);
++					mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift);
++					return ret;
++				}
++				mtk_nand_block_markbad_hw(mtd, to_page << chip->page_shift);
++				*to_blk = new_blk;
++				to_page = ((*to_blk) <<  page_per_block_bit);
++			}
++		}
++	}
++
++	kfree(buf);
++
++	return 0;
++}
++
++static int
++mtk_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, uint32_t offset,
++		int data_len, const u8 * buf, int oob_required, int page, int cached, int raw)
++{
++	int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	int block = page / page_per_block;
++	u16 page_in_block = page % page_per_block;
++	int mapped_block = block;
++
++#if defined(MTK_NAND_BMT)
++	mapped_block = get_mapping_block_index(block);
++	// write bad index into oob
++	if (mapped_block != block)
++		set_bad_index_to_oob(chip->oob_poi, block);
++	else
++		set_bad_index_to_oob(chip->oob_poi, FAKE_INDEX);
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1)
++			return NAND_STATUS_FAIL;
++		if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++			return NAND_STATUS_FAIL;
++	}
++#endif
++	do {
++		if (mtk_nand_exec_write_page(mtd, page_in_block + mapped_block * page_per_block, mtd->writesize, (u8 *)buf, chip->oob_poi)) {
++			MSG(INIT, "write fail at block: 0x%x, page: 0x%x\n", mapped_block, page_in_block);
++#if defined(MTK_NAND_BMT)
++			if (update_bmt((page_in_block + mapped_block * page_per_block) << chip->page_shift, UPDATE_WRITE_FAIL, (u8 *) buf, chip->oob_poi)) {
++				MSG(INIT, "Update BMT success\n");
++				return 0;
++			} else {
++				MSG(INIT, "Update BMT fail\n");
++				return -EIO;
++			}
++#else
++			{
++				int new_blk;
++				nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3);
++				if (write_next_on_fail(mtd, (char *)buf, page_in_block + mapped_block * page_per_block, &new_blk) != 0)
++				{
++				mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift);
++				return NAND_STATUS_FAIL;
++				}
++				mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift);
++				break;
++			}
++#endif
++		} else
++			break;
++	} while(1);
++
++	return 0;
++}
++
++static void
++mtk_nand_command_bp(struct mtd_info *mtd, unsigned int command, int column, int page_addr)
++{
++	struct nand_chip *nand = mtd->priv;
++
++	switch (command) {
++	case NAND_CMD_SEQIN:
++		memset(g_kCMD.au1OOB, 0xFF, sizeof(g_kCMD.au1OOB));
++		g_kCMD.pDataBuf = NULL;
++		g_kCMD.u4RowAddr = page_addr;
++		g_kCMD.u4ColAddr = column;
++		break;
++
++	case NAND_CMD_PAGEPROG:
++		if (g_kCMD.pDataBuf || (0xFF != g_kCMD.au1OOB[nand_badblock_offset])) {
++			u8 *pDataBuf = g_kCMD.pDataBuf ? g_kCMD.pDataBuf : nand->buffers->databuf;
++			mtk_nand_exec_write_page(mtd, g_kCMD.u4RowAddr, mtd->writesize, pDataBuf, g_kCMD.au1OOB);
++			g_kCMD.u4RowAddr = (u32) - 1;
++			g_kCMD.u4OOBRowAddr = (u32) - 1;
++		}
++		break;
++
++	case NAND_CMD_READOOB:
++		g_kCMD.u4RowAddr = page_addr;
++		g_kCMD.u4ColAddr = column + mtd->writesize;
++		break;
++
++	case NAND_CMD_READ0:
++		g_kCMD.u4RowAddr = page_addr;
++		g_kCMD.u4ColAddr = column;
++		break;
++
++	case NAND_CMD_ERASE1:
++		nand->state=FL_ERASING;
++		(void)mtk_nand_reset();
++		mtk_nand_set_mode(CNFG_OP_ERASE);
++		(void)mtk_nand_set_command(NAND_CMD_ERASE1);
++		(void)mtk_nand_set_address(0, page_addr, 0, devinfo.addr_cycle - 2);
++		break;
++
++	case NAND_CMD_ERASE2:
++		(void)mtk_nand_set_command(NAND_CMD_ERASE2);
++		while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY)
++			;
++		break;
++
++	case NAND_CMD_STATUS:
++		(void)mtk_nand_reset();
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_BYTE_RW);
++		mtk_nand_set_mode(CNFG_OP_SRD);
++		mtk_nand_set_mode(CNFG_READ_EN);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		(void)mtk_nand_set_command(NAND_CMD_STATUS);
++		NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_NOB_MASK);
++		mb();
++		DRV_WriteReg16(NFI_CON_REG16, CON_NFI_SRD | (1 << CON_NFI_NOB_SHIFT));
++		g_bcmdstatus = true;
++		break;
++
++	case NAND_CMD_RESET:
++		(void)mtk_nand_reset();
++		DRV_WriteReg16(NFI_INTR_EN_REG16, INTR_RST_DONE_EN);
++		(void)mtk_nand_set_command(NAND_CMD_RESET);
++		DRV_WriteReg16(NFI_BASE+0x44, 0xF1);
++		while(!(DRV_Reg16(NFI_INTR_REG16)&INTR_RST_DONE_EN))
++			;
++		break;
++
++	case NAND_CMD_READID:
++		mtk_nand_reset();
++		/* Disable HW ECC */
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN | CNFG_BYTE_RW);
++		(void)mtk_nand_reset();
++		mb();
++		mtk_nand_set_mode(CNFG_OP_SRD);
++		(void)mtk_nand_set_command(NAND_CMD_READID);
++		(void)mtk_nand_set_address(0, 0, 1, 0);
++		DRV_WriteReg16(NFI_CON_REG16, CON_NFI_SRD);
++		while (DRV_Reg32(NFI_STA_REG32) & STA_DATAR_STATE)
++			;
++		break;
++
++	default:
++		BUG();
++		break;
++	}
++}
++
++static void
++mtk_nand_select_chip(struct mtd_info *mtd, int chip)
++{
++	if ((chip == -1) && (false == g_bInitDone)) {
++		struct nand_chip *nand = mtd->priv;
++		struct mtk_nand_host *host = nand->priv;
++		struct mtk_nand_host_hw *hw = host->hw;
++		u32 spare_per_sector = mtd->oobsize / (mtd->writesize / 512);
++		u32 ecc_bit = 4;
++		u32 spare_bit = PAGEFMT_SPARE_16;
++
++		if (spare_per_sector >= 28) {
++			spare_bit = PAGEFMT_SPARE_28;
++			ecc_bit = 12;
++			spare_per_sector = 28;
++		} else if (spare_per_sector >= 27) {
++			spare_bit = PAGEFMT_SPARE_27;
++			ecc_bit = 8;
++			spare_per_sector = 27;
++		} else if (spare_per_sector >= 26) {
++			spare_bit = PAGEFMT_SPARE_26;
++			ecc_bit = 8;
++			spare_per_sector = 26;
++		} else if (spare_per_sector >= 16) {
++			spare_bit = PAGEFMT_SPARE_16;
++			ecc_bit = 4;
++			spare_per_sector = 16;
++		} else {
++			MSG(INIT, "[NAND]: NFI not support oobsize: %x\n", spare_per_sector);
++			ASSERT(0);
++		}
++		mtd->oobsize = spare_per_sector*(mtd->writesize/512);
++		MSG(INIT, "[NAND]select ecc bit:%d, sparesize :%d spare_per_sector=%d\n",ecc_bit,mtd->oobsize,spare_per_sector);
++		/* Setup PageFormat */
++		if (4096 == mtd->writesize) {
++			NFI_SET_REG16(NFI_PAGEFMT_REG16, (spare_bit << PAGEFMT_SPARE_SHIFT) | PAGEFMT_4K);
++			nand->cmdfunc = mtk_nand_command_bp;
++		} else if (2048 == mtd->writesize) {
++			NFI_SET_REG16(NFI_PAGEFMT_REG16, (spare_bit << PAGEFMT_SPARE_SHIFT) | PAGEFMT_2K);
++			nand->cmdfunc = mtk_nand_command_bp;
++		}
++		ECC_Config(hw,ecc_bit);
++		g_bInitDone = true;
++	}
++	switch (chip) {
++	case -1:
++		break;
++	case 0:
++	case 1:
++		/*  Jun Shen, 2011.04.13  */
++		/* Note: MT6577 EVB NAND  is mounted on CS0, but FPGA is CS1  */
++		DRV_WriteReg16(NFI_CSEL_REG16, chip);
++		/*  Jun Shen, 2011.04.13 */
++		break;
++	}
++}
++
++static uint8_t
++mtk_nand_read_byte(struct mtd_info *mtd)
++{
++	uint8_t retval = 0;
++
++	if (!mtk_nand_pio_ready()) {
++		printk("pio ready timeout\n");
++		retval = false;
++	}
++
++	if (g_bcmdstatus) {
++		retval = DRV_Reg8(NFI_DATAR_REG32);
++		NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_NOB_MASK);
++		mtk_nand_reset();
++		if (g_bHwEcc) {
++			NFI_SET_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		} else {
++			NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		}
++		g_bcmdstatus = false;
++	} else
++		retval = DRV_Reg8(NFI_DATAR_REG32);
++
++	return retval;
++}
++
++static void
++mtk_nand_read_buf(struct mtd_info *mtd, uint8_t * buf, int len)
++{
++	struct nand_chip *nand = (struct nand_chip *)mtd->priv;
++	struct NAND_CMD *pkCMD = &g_kCMD;
++	u32 u4ColAddr = pkCMD->u4ColAddr;
++	u32 u4PageSize = mtd->writesize;
++
++	if (u4ColAddr < u4PageSize) {
++		if ((u4ColAddr == 0) && (len >= u4PageSize)) {
++			mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, buf, pkCMD->au1OOB);
++			if (len > u4PageSize) {
++				u32 u4Size = min(len - u4PageSize, sizeof(pkCMD->au1OOB));
++				memcpy(buf + u4PageSize, pkCMD->au1OOB, u4Size);
++			}
++		} else {
++			mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, nand->buffers->databuf, pkCMD->au1OOB);
++			memcpy(buf, nand->buffers->databuf + u4ColAddr, len);
++		}
++		pkCMD->u4OOBRowAddr = pkCMD->u4RowAddr;
++	} else {
++		u32 u4Offset = u4ColAddr - u4PageSize;
++		u32 u4Size = min(len - u4Offset, sizeof(pkCMD->au1OOB));
++		if (pkCMD->u4OOBRowAddr != pkCMD->u4RowAddr) {
++			mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, nand->buffers->databuf, pkCMD->au1OOB);
++			pkCMD->u4OOBRowAddr = pkCMD->u4RowAddr;
++		}
++		memcpy(buf, pkCMD->au1OOB + u4Offset, u4Size);
++	}
++	pkCMD->u4ColAddr += len;
++}
++
++static void
++mtk_nand_write_buf(struct mtd_info *mtd, const uint8_t * buf, int len)
++{
++	struct NAND_CMD *pkCMD = &g_kCMD;
++	u32 u4ColAddr = pkCMD->u4ColAddr;
++	u32 u4PageSize = mtd->writesize;
++	int i4Size, i;
++
++	if (u4ColAddr >= u4PageSize) {
++		u32 u4Offset = u4ColAddr - u4PageSize;
++		u8 *pOOB = pkCMD->au1OOB + u4Offset;
++		i4Size = min(len, (int)(sizeof(pkCMD->au1OOB) - u4Offset));
++		for (i = 0; i < i4Size; i++) {
++			pOOB[i] &= buf[i];
++		}
++	} else {
++		pkCMD->pDataBuf = (u8 *) buf;
++	}
++
++	pkCMD->u4ColAddr += len;
++}
++
++static int
++mtk_nand_write_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, const uint8_t * buf, int oob_required)
++{
++	mtk_nand_write_buf(mtd, buf, mtd->writesize);
++	mtk_nand_write_buf(mtd, chip->oob_poi, mtd->oobsize);
++	return 0;
++}
++
++static int
++mtk_nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip, uint8_t * buf, int oob_required, int page)
++{
++	struct NAND_CMD *pkCMD = &g_kCMD;
++	u32 u4ColAddr = pkCMD->u4ColAddr;
++	u32 u4PageSize = mtd->writesize;
++
++	if (u4ColAddr == 0) {
++		mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, buf, chip->oob_poi);
++		pkCMD->u4ColAddr += u4PageSize + mtd->oobsize;
++	}
++
++	return 0;
++}
++
++static int
++mtk_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip, u8 * buf, int page)
++{
++	int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	int block = page / page_per_block;
++	u16 page_in_block = page % page_per_block;
++	int mapped_block = block;
++
++#if defined (MTK_NAND_BMT)
++	mapped_block = get_mapping_block_index(block);
++	if (mtk_nand_exec_read_page(mtd, page_in_block + mapped_block * page_per_block,
++			mtd->writesize, buf, chip->oob_poi))
++		return 0;
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1)
++			return NAND_STATUS_FAIL;
++		if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++			return NAND_STATUS_FAIL;
++	}
++
++	if (mtk_nand_exec_read_page(mtd, page_in_block + mapped_block * page_per_block, mtd->writesize, buf, chip->oob_poi))
++		return 0;
++	else
++		return -EIO;
++#endif
++}
++
++int
++mtk_nand_erase_hw(struct mtd_info *mtd, int page)
++{
++	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
++
++	chip->erase_cmd(mtd, page);
++
++	return chip->waitfunc(mtd, chip);
++}
++
++static int
++mtk_nand_erase(struct mtd_info *mtd, int page)
++{
++	// get mapping 
++	struct nand_chip *chip = mtd->priv;
++	int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	int page_in_block = page % page_per_block;
++	int block = page / page_per_block;
++	int mapped_block = block;
++
++#if defined(MTK_NAND_BMT)    
++	mapped_block = get_mapping_block_index(block);
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1)
++			return NAND_STATUS_FAIL;
++		if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++			return NAND_STATUS_FAIL;
++	}
++#endif
++
++	do {
++		int status = mtk_nand_erase_hw(mtd, page_in_block + page_per_block * mapped_block);
++
++		if (status & NAND_STATUS_FAIL) {
++#if defined (MTK_NAND_BMT)    	
++			if (update_bmt( (page_in_block + mapped_block * page_per_block) << chip->page_shift,
++					UPDATE_ERASE_FAIL, NULL, NULL))
++			{
++				MSG(INIT, "Erase fail at block: 0x%x, update BMT success\n", mapped_block);
++				return 0;
++			} else {
++				MSG(INIT, "Erase fail at block: 0x%x, update BMT fail\n", mapped_block);
++				return NAND_STATUS_FAIL;
++			}
++#else
++			mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift);
++			nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3);
++			if (shift_on_bbt) {
++				mapped_block = block_remap(mtd, block);
++				if (mapped_block == -1)
++					return NAND_STATUS_FAIL;
++				if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++					return NAND_STATUS_FAIL;
++			} else
++				return NAND_STATUS_FAIL;
++#endif
++		} else
++			break;
++	} while(1);
++
++	return 0;
++}
++
++static int
++mtk_nand_read_oob_raw(struct mtd_info *mtd, uint8_t * buf, int page_addr, int len)
++{
++	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
++	u32 col_addr = 0;
++	u32 sector = 0;
++	int res = 0;
++	u32 colnob = 2, rawnob = devinfo.addr_cycle - 2;
++	int randomread = 0;
++	int read_len = 0;
++	int sec_num = 1<<(chip->page_shift-9);
++	int spare_per_sector = mtd->oobsize/sec_num;
++
++	if (len >  NAND_MAX_OOBSIZE || len % OOB_AVAI_PER_SECTOR || !buf) {
++		printk(KERN_WARNING "[%s] invalid parameter, len: %d, buf: %p\n", __FUNCTION__, len, buf);
++		return -EINVAL;
++	}
++	if (len > spare_per_sector)
++		randomread = 1;
++	if (!randomread || !(devinfo.advancedmode & RAMDOM_READ)) {
++		while (len > 0) {
++			read_len = min(len, spare_per_sector);
++			col_addr = NAND_SECTOR_SIZE + sector * (NAND_SECTOR_SIZE + spare_per_sector); // TODO: Fix this hard-code 16
++			if (!mtk_nand_ready_for_read(chip, page_addr, col_addr, false, NULL)) {
++				printk(KERN_WARNING "mtk_nand_ready_for_read return failed\n");
++				res = -EIO;
++				goto error;
++			}
++			if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) {
++				printk(KERN_WARNING "mtk_nand_mcu_read_data return failed\n");
++				res = -EIO;
++				goto error;
++			}
++			mtk_nand_check_RW_count(read_len);
++			mtk_nand_stop_read();
++			sector++;
++			len -= read_len;
++		}
++	} else {
++		col_addr = NAND_SECTOR_SIZE;
++		if (chip->options & NAND_BUSWIDTH_16)
++			col_addr /= 2;
++		if (!mtk_nand_reset())
++			goto error;
++		mtk_nand_set_mode(0x6000);
++		NFI_SET_REG16(NFI_CNFG_REG16, CNFG_READ_EN);
++		DRV_WriteReg16(NFI_CON_REG16, 4 << CON_NFI_SEC_SHIFT);
++
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_AHB);
++		NFI_CLN_REG16(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++
++		mtk_nand_set_autoformat(false);
++
++		if (!mtk_nand_set_command(NAND_CMD_READ0))
++			goto error;
++		//1 FIXED ME: For Any Kind of AddrCycle
++		if (!mtk_nand_set_address(col_addr, page_addr, colnob, rawnob))
++			goto error;
++		if (!mtk_nand_set_command(NAND_CMD_READSTART))
++			goto error;
++		if (!mtk_nand_status_ready(STA_NAND_BUSY))
++			goto error;
++		read_len = min(len, spare_per_sector);
++		if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) {
++			printk(KERN_WARNING "mtk_nand_mcu_read_data return failed first 16\n");
++			res = -EIO;
++			goto error;
++		}
++		sector++;
++		len -= read_len;
++		mtk_nand_stop_read();
++		while (len > 0) {
++			read_len = min(len,  spare_per_sector);
++			if (!mtk_nand_set_command(0x05))
++				goto error;
++			col_addr = NAND_SECTOR_SIZE + sector * (NAND_SECTOR_SIZE + spare_per_sector);
++			if (chip->options & NAND_BUSWIDTH_16)
++				col_addr /= 2;
++			DRV_WriteReg32(NFI_COLADDR_REG32, col_addr);
++			DRV_WriteReg16(NFI_ADDRNOB_REG16, 2);
++			DRV_WriteReg16(NFI_CON_REG16, 4 << CON_NFI_SEC_SHIFT);
++			if (!mtk_nand_status_ready(STA_ADDR_STATE))
++				goto error;
++			if (!mtk_nand_set_command(0xE0))
++				goto error;
++			if (!mtk_nand_status_ready(STA_NAND_BUSY))
++				goto error;
++			if (!mtk_nand_mcu_read_data(buf + spare_per_sector * sector, read_len)) {
++				printk(KERN_WARNING "mtk_nand_mcu_read_data return failed first 16\n");
++				res = -EIO;
++				goto error;
++			}
++			mtk_nand_stop_read();
++			sector++;
++			len -= read_len;
++		}
++	}
++error:
++	NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BRD);
++	return res;
++}
++
++static int
++mtk_nand_write_oob_raw(struct mtd_info *mtd, const uint8_t * buf, int page_addr, int len)
++{
++	struct nand_chip *chip = mtd->priv;
++	u32 col_addr = 0;
++	u32 sector = 0;
++	int write_len = 0;
++	int status;
++	int sec_num = 1<<(chip->page_shift-9);
++	int spare_per_sector = mtd->oobsize/sec_num;
++
++	if (len >  NAND_MAX_OOBSIZE || len % OOB_AVAI_PER_SECTOR || !buf) {
++		printk(KERN_WARNING "[%s] invalid parameter, len: %d, buf: %p\n", __FUNCTION__, len, buf);
++		return -EINVAL;
++	}
++
++	while (len > 0) {
++		write_len = min(len,  spare_per_sector);
++		col_addr = sector * (NAND_SECTOR_SIZE +  spare_per_sector) + NAND_SECTOR_SIZE;
++		if (!mtk_nand_ready_for_write(chip, page_addr, col_addr, false, NULL))
++			return -EIO;
++		if (!mtk_nand_mcu_write_data(mtd, buf + sector * spare_per_sector, write_len))
++			return -EIO;
++		(void)mtk_nand_check_RW_count(write_len);
++		NFI_CLN_REG16(NFI_CON_REG16, CON_NFI_BWR);
++		(void)mtk_nand_set_command(NAND_CMD_PAGEPROG);
++		while (DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY)
++			;
++		status = chip->waitfunc(mtd, chip);
++		if (status & NAND_STATUS_FAIL) {
++			printk(KERN_INFO "status: %d\n", status);
++			return -EIO;
++		}
++		len -= write_len;
++		sector++;
++	}
++
++	return 0;
++}
++
++static int
++mtk_nand_write_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page)
++{
++	int i, iter;
++	int sec_num = 1<<(chip->page_shift-9);
++	int spare_per_sector = mtd->oobsize/sec_num;
++
++	memcpy(local_oob_buf, chip->oob_poi, mtd->oobsize);
++
++	// copy ecc data
++	for (i = 0; i < chip->ecc.layout->eccbytes; i++) {
++		iter = (i / (spare_per_sector-OOB_AVAI_PER_SECTOR)) *  spare_per_sector + OOB_AVAI_PER_SECTOR + i % (spare_per_sector-OOB_AVAI_PER_SECTOR);
++		local_oob_buf[iter] = chip->oob_poi[chip->ecc.layout->eccpos[i]];
++	}
++
++	// copy FDM data
++	for (i = 0; i < sec_num; i++)
++		memcpy(&local_oob_buf[i * spare_per_sector], &chip->oob_poi[i * OOB_AVAI_PER_SECTOR], OOB_AVAI_PER_SECTOR);
++
++	return mtk_nand_write_oob_raw(mtd, local_oob_buf, page, mtd->oobsize);
++}
++
++static int mtk_nand_write_oob(struct mtd_info *mtd, struct nand_chip *chip, int page)
++{
++	int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	int block = page / page_per_block;
++	u16 page_in_block = page % page_per_block;
++	int mapped_block = block;
++
++#if defined(MTK_NAND_BMT)
++	mapped_block = get_mapping_block_index(block);
++	// write bad index into oob
++	if (mapped_block != block)
++		set_bad_index_to_oob(chip->oob_poi, block);
++	else
++		set_bad_index_to_oob(chip->oob_poi, FAKE_INDEX);
++#else
++	if (shift_on_bbt)
++	{
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1)
++			return NAND_STATUS_FAIL;
++		if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++			return NAND_STATUS_FAIL;
++	}
++#endif
++	do {
++		if (mtk_nand_write_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block /* page */)) {
++			MSG(INIT, "write oob fail at block: 0x%x, page: 0x%x\n", mapped_block, page_in_block);
++#if defined(MTK_NAND_BMT)      
++			if (update_bmt((page_in_block + mapped_block * page_per_block) << chip->page_shift,
++					UPDATE_WRITE_FAIL, NULL, chip->oob_poi))
++			{
++				MSG(INIT, "Update BMT success\n");
++				return 0;
++			} else {
++				MSG(INIT, "Update BMT fail\n");
++				return -EIO;
++			}
++#else
++			mtk_nand_block_markbad_hw(mtd, (page_in_block + mapped_block * page_per_block) << chip->page_shift);
++			nand_bbt_set(mtd, page_in_block + mapped_block * page_per_block, 0x3);
++			if (shift_on_bbt) {
++				mapped_block = block_remap(mtd, mapped_block);
++				if (mapped_block == -1)
++					return NAND_STATUS_FAIL;
++				if (nand_bbt_get(mtd, mapped_block << (chip->phys_erase_shift - chip->page_shift)) != 0x0)
++					return NAND_STATUS_FAIL;
++			} else {
++				return NAND_STATUS_FAIL;
++			}
++#endif
++		} else
++			break;
++	} while (1);
++
++	return 0;
++}
++
++int
++mtk_nand_block_markbad_hw(struct mtd_info *mtd, loff_t offset)
++{
++	struct nand_chip *chip = mtd->priv;
++	int block = (int)offset >> chip->phys_erase_shift;
++	int page = block * (1 << (chip->phys_erase_shift - chip->page_shift));
++	u8 buf[8];
++
++	memset(buf, 0xFF, 8);
++	buf[0] = 0;
++	return  mtk_nand_write_oob_raw(mtd, buf, page, 8);
++}
++
++static int
++mtk_nand_block_markbad(struct mtd_info *mtd, loff_t offset)
++{
++	struct nand_chip *chip = mtd->priv;
++	int block = (int)offset >> chip->phys_erase_shift;
++	int ret;
++	int mapped_block = block;
++
++	nand_get_device(chip, mtd, FL_WRITING);
++
++#if defined(MTK_NAND_BMT)    
++	mapped_block = get_mapping_block_index(block);
++	ret = mtk_nand_block_markbad_hw(mtd, mapped_block << chip->phys_erase_shift);
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1) {
++			printk("NAND mark bad failed\n");
++			nand_release_device(mtd);
++			return NAND_STATUS_FAIL;
++		}
++	}
++	ret = mtk_nand_block_markbad_hw(mtd, mapped_block << chip->phys_erase_shift);
++#endif
++	nand_release_device(mtd);
++
++	return ret;
++}
++
++int
++mtk_nand_read_oob_hw(struct mtd_info *mtd, struct nand_chip *chip, int page)
++{
++	int i;
++	u8 iter = 0;
++
++	int sec_num = 1<<(chip->page_shift-9);
++	int spare_per_sector = mtd->oobsize/sec_num;
++
++	if (mtk_nand_read_oob_raw(mtd, chip->oob_poi, page, mtd->oobsize)) {
++		printk(KERN_ERR "[%s]mtk_nand_read_oob_raw return failed\n", __FUNCTION__);
++		return -EIO;
++	}
++
++	// adjust to ecc physical layout to memory layout
++	/*********************************************************/
++	/* FDM0 | ECC0 | FDM1 | ECC1 | FDM2 | ECC2 | FDM3 | ECC3 */
++	/*  8B  |  8B  |  8B  |  8B  |  8B  |  8B  |  8B  |  8B  */
++	/*********************************************************/
++
++	memcpy(local_oob_buf, chip->oob_poi, mtd->oobsize);
++	// copy ecc data
++	for (i = 0; i < chip->ecc.layout->eccbytes; i++) {
++		iter = (i / (spare_per_sector-OOB_AVAI_PER_SECTOR)) *  spare_per_sector + OOB_AVAI_PER_SECTOR + i % (spare_per_sector-OOB_AVAI_PER_SECTOR);
++		chip->oob_poi[chip->ecc.layout->eccpos[i]] = local_oob_buf[iter];
++	}
++
++	// copy FDM data
++	for (i = 0; i < sec_num; i++) {
++		memcpy(&chip->oob_poi[i * OOB_AVAI_PER_SECTOR], &local_oob_buf[i *  spare_per_sector], OOB_AVAI_PER_SECTOR);
++	}
++
++	return 0;
++}
++
++static int
++mtk_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip, int page)
++{
++	int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	int block = page / page_per_block;
++	u16 page_in_block = page % page_per_block;
++	int mapped_block = block;
++
++#if defined (MTK_NAND_BMT)
++	mapped_block = get_mapping_block_index(block);
++	mtk_nand_read_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block);
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1)
++			return NAND_STATUS_FAIL;
++		// allow to read oob even if the block is bad
++	}
++	if (mtk_nand_read_oob_hw(mtd, chip, page_in_block + mapped_block * page_per_block)!=0)
++		return -1;
++#endif
++	return 0;
++}
++
++int
++mtk_nand_block_bad_hw(struct mtd_info *mtd, loff_t ofs)
++{
++	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
++	int page_addr = (int)(ofs >> chip->page_shift);
++	unsigned int page_per_block = 1 << (chip->phys_erase_shift - chip->page_shift);
++	unsigned char oob_buf[8];
++
++	page_addr &= ~(page_per_block - 1);
++	if (mtk_nand_read_oob_raw(mtd, oob_buf, page_addr, sizeof(oob_buf))) {
++		printk(KERN_WARNING "mtk_nand_read_oob_raw return error\n");
++		return 1;
++	}
++
++	if (oob_buf[0] != 0xff) {
++		printk(KERN_WARNING "Bad block detected at 0x%x, oob_buf[0] is 0x%x\n", page_addr, oob_buf[0]);
++		// dump_nfi();
++		return 1;
++	}
++
++	return 0;
++}
++
++static int
++mtk_nand_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
++{
++	int chipnr = 0;
++	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
++	int block = (int)ofs >> chip->phys_erase_shift;
++	int mapped_block = block;
++	int ret;
++
++	if (getchip) {
++		chipnr = (int)(ofs >> chip->chip_shift);
++		nand_get_device(chip, mtd, FL_READING);
++		/* Select the NAND device */
++		chip->select_chip(mtd, chipnr);
++	}
++
++#if defined(MTK_NAND_BMT)    
++	mapped_block = get_mapping_block_index(block);
++#else
++	if (shift_on_bbt) {
++		mapped_block = block_remap(mtd, block);
++		if (mapped_block == -1) {
++		if (getchip)
++			nand_release_device(mtd);
++			return NAND_STATUS_FAIL;
++		}
++	}
++#endif
++
++	ret = mtk_nand_block_bad_hw(mtd, mapped_block << chip->phys_erase_shift);
++#if defined (MTK_NAND_BMT)	
++	if (ret) {
++		MSG(INIT, "Unmapped bad block: 0x%x\n", mapped_block);
++		if (update_bmt(mapped_block << chip->phys_erase_shift, UPDATE_UNMAPPED_BLOCK, NULL, NULL)) {
++			MSG(INIT, "Update BMT success\n");
++			ret = 0;
++		} else {
++			MSG(INIT, "Update BMT fail\n");
++			ret = 1;
++		}
++	}
++#endif
++
++	if (getchip)
++		nand_release_device(mtd);
++
++	return ret;
++}
++
++#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
++char gacBuf[4096 + 288];
++
++static int
++mtk_nand_verify_buf(struct mtd_info *mtd, const uint8_t * buf, int len)
++{
++	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
++	struct NAND_CMD *pkCMD = &g_kCMD;
++	u32 u4PageSize = mtd->writesize;
++	u32 *pSrc, *pDst;
++	int i;
++
++	mtk_nand_exec_read_page(mtd, pkCMD->u4RowAddr, u4PageSize, gacBuf, gacBuf + u4PageSize);
++
++	pSrc = (u32 *) buf;
++	pDst = (u32 *) gacBuf;
++	len = len / sizeof(u32);
++	for (i = 0; i < len; ++i) {
++		if (*pSrc != *pDst) {
++			MSG(VERIFY, "mtk_nand_verify_buf page fail at page %d\n", pkCMD->u4RowAddr);
++			return -1;
++		}
++		pSrc++;
++		pDst++;
++	}
++
++	pSrc = (u32 *) chip->oob_poi;
++	pDst = (u32 *) (gacBuf + u4PageSize);
++
++	if ((pSrc[0] != pDst[0]) || (pSrc[1] != pDst[1]) || (pSrc[2] != pDst[2]) || (pSrc[3] != pDst[3]) || (pSrc[4] != pDst[4]) || (pSrc[5] != pDst[5])) {
++	// TODO: Ask Designer Why?
++	//(pSrc[6] != pDst[6]) || (pSrc[7] != pDst[7])) 
++		MSG(VERIFY, "mtk_nand_verify_buf oob fail at page %d\n", pkCMD->u4RowAddr);
++		MSG(VERIFY, "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", pSrc[0], pSrc[1], pSrc[2], pSrc[3], pSrc[4], pSrc[5], pSrc[6], pSrc[7]);
++		MSG(VERIFY, "0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", pDst[0], pDst[1], pDst[2], pDst[3], pDst[4], pDst[5], pDst[6], pDst[7]);
++		return -1;
++	}
++	return 0;
++}
++#endif
++
++static void
++mtk_nand_init_hw(struct mtk_nand_host *host) {
++	struct mtk_nand_host_hw *hw = host->hw;
++	u32 data;
++
++	data = DRV_Reg32(RALINK_SYSCTL_BASE+0x60);
++	data &= ~((0x3<<18)|(0x3<<16));
++	data |= ((0x2<<18) |(0x2<<16));
++	DRV_WriteReg32(RALINK_SYSCTL_BASE+0x60, data);
++
++	MSG(INIT, "Enable NFI Clock\n");
++	nand_enable_clock();
++
++	g_bInitDone = false;
++	g_kCMD.u4OOBRowAddr = (u32) - 1;
++
++	/* Set default NFI access timing control */
++	DRV_WriteReg32(NFI_ACCCON_REG32, hw->nfi_access_timing);
++	DRV_WriteReg16(NFI_CNFG_REG16, 0);
++	DRV_WriteReg16(NFI_PAGEFMT_REG16, 0);
++
++	/* Reset the state machine and data FIFO, because flushing FIFO */
++	(void)mtk_nand_reset();
++
++	/* Set the ECC engine */
++	if (hw->nand_ecc_mode == NAND_ECC_HW) {
++		MSG(INIT, "%s : Use HW ECC\n", MODULE_NAME);
++		if (g_bHwEcc)
++			NFI_SET_REG32(NFI_CNFG_REG16, CNFG_HW_ECC_EN);
++		ECC_Config(host->hw,4);
++		mtk_nand_configure_fdm(8);
++		mtk_nand_configure_lock();
++	}
++
++	NFI_SET_REG16(NFI_IOCON_REG16, 0x47);
++}
++
++static int mtk_nand_dev_ready(struct mtd_info *mtd)
++{
++	return !(DRV_Reg32(NFI_STA_REG32) & STA_NAND_BUSY);
++}
++
++#define FACT_BBT_BLOCK_NUM  32 // use the latest 32 BLOCK for factory bbt table
++#define FACT_BBT_OOB_SIGNATURE  1
++#define FACT_BBT_SIGNATURE_LEN  7
++const u8 oob_signature[] = "mtknand";
++static u8 *fact_bbt = 0;
++static u32 bbt_size = 0;
++
++static int
++read_fact_bbt(struct mtd_info *mtd, unsigned int page)
++{
++	struct nand_chip *chip = mtd->priv;
++
++	// read oob
++	if (mtk_nand_read_oob_hw(mtd, chip, page)==0)
++	{
++		if (chip->oob_poi[nand_badblock_offset] != 0xFF)
++		{
++			printk("Bad Block on Page %x\n", page);
++			return -1;
++		}
++		if (memcmp(&chip->oob_poi[FACT_BBT_OOB_SIGNATURE], oob_signature, FACT_BBT_SIGNATURE_LEN) != 0)
++		{
++			printk("compare signature failed %x\n", page);
++			return -1;
++		}
++		if (mtk_nand_exec_read_page(mtd, page, mtd->writesize, chip->buffers->databuf, chip->oob_poi))
++		{
++			printk("Signature matched and data read!\n");
++			memcpy(fact_bbt, chip->buffers->databuf, (bbt_size <= mtd->writesize)? bbt_size:mtd->writesize);
++			return 0;
++		}
++
++	}
++	printk("failed at page %x\n", page);
++	return -1;
++}
++
++static int
++load_fact_bbt(struct mtd_info *mtd)
++{
++	struct nand_chip *chip = mtd->priv;
++	int i;
++	u32 total_block;
++
++	total_block = 1 << (chip->chip_shift - chip->phys_erase_shift);
++	bbt_size = total_block >> 2;
++
++	if ((!fact_bbt) && (bbt_size))
++		fact_bbt = (u8 *)kmalloc(bbt_size, GFP_KERNEL);
++	if (!fact_bbt)
++		return -1;
++
++	for (i = total_block - 1; i >= (total_block - FACT_BBT_BLOCK_NUM); i--)
++	{
++		if (read_fact_bbt(mtd, i << (chip->phys_erase_shift - chip->page_shift)) == 0)
++		{
++			printk("load_fact_bbt success %d\n", i);
++			return 0;
++		}
++
++	}
++	printk("load_fact_bbt failed\n");
++	return -1;
++}
++
++static int
++mtk_nand_probe(struct platform_device *pdev)
++{
++	struct mtd_part_parser_data ppdata;
++	struct mtk_nand_host_hw *hw;
++	struct mtd_info *mtd;
++	struct nand_chip *nand_chip;
++	u8 ext_id1, ext_id2, ext_id3;
++	int err = 0;
++	int id;
++	u32 ext_id;
++	int i;
++	u32 data;
++
++	data = DRV_Reg32(RALINK_SYSCTL_BASE+0x60);
++	data &= ~((0x3<<18)|(0x3<<16));
++	data |= ((0x2<<18) |(0x2<<16));
++	DRV_WriteReg32(RALINK_SYSCTL_BASE+0x60, data);
++
++	hw = &mt7621_nand_hw,
++	BUG_ON(!hw);
++	/* Allocate memory for the device structure (and zero it) */
++	host = kzalloc(sizeof(struct mtk_nand_host), GFP_KERNEL);
++	if (!host) {
++		MSG(INIT, "mtk_nand: failed to allocate device structure.\n");
++		return -ENOMEM;
++	}
++
++	/* Allocate memory for 16 byte aligned buffer */
++	local_buffer_16_align = local_buffer + 16 - ((u32) local_buffer % 16);
++	printk(KERN_INFO "Allocate 16 byte aligned buffer: %p\n", local_buffer_16_align);
++	host->hw = hw;
++
++	/* init mtd data structure */
++	nand_chip = &host->nand_chip;
++	nand_chip->priv = host;     /* link the private data structures */
++
++	mtd = &host->mtd;
++	mtd->priv = nand_chip;
++	mtd->owner = THIS_MODULE;
++	mtd->name  = "MT7621-NAND";
++
++	hw->nand_ecc_mode = NAND_ECC_HW;
++
++	/* Set address of NAND IO lines */
++	nand_chip->IO_ADDR_R = (void __iomem *)NFI_DATAR_REG32;
++	nand_chip->IO_ADDR_W = (void __iomem *)NFI_DATAW_REG32;
++	nand_chip->chip_delay = 20; /* 20us command delay time */
++	nand_chip->ecc.mode = hw->nand_ecc_mode;    /* enable ECC */
++	nand_chip->ecc.strength = 1;
++	nand_chip->read_byte = mtk_nand_read_byte;
++	nand_chip->read_buf = mtk_nand_read_buf;
++	nand_chip->write_buf = mtk_nand_write_buf;
++#ifdef CONFIG_MTD_NAND_VERIFY_WRITE
++	nand_chip->verify_buf = mtk_nand_verify_buf;
++#endif
++	nand_chip->select_chip = mtk_nand_select_chip;
++	nand_chip->dev_ready = mtk_nand_dev_ready;
++	nand_chip->cmdfunc = mtk_nand_command_bp;
++	nand_chip->ecc.read_page = mtk_nand_read_page_hwecc;
++	nand_chip->ecc.write_page = mtk_nand_write_page_hwecc;
++
++	nand_chip->ecc.layout = &nand_oob_64;
++	nand_chip->ecc.size = hw->nand_ecc_size;    //2048
++	nand_chip->ecc.bytes = hw->nand_ecc_bytes;  //32
++
++	// For BMT, we need to revise driver architecture
++	nand_chip->write_page = mtk_nand_write_page;
++	nand_chip->ecc.write_oob = mtk_nand_write_oob;
++	nand_chip->block_markbad = mtk_nand_block_markbad;   // need to add nand_get_device()/nand_release_device().
++	//	nand_chip->erase = mtk_nand_erase;	
++	//    nand_chip->read_page = mtk_nand_read_page;
++	nand_chip->ecc.read_oob = mtk_nand_read_oob;
++	nand_chip->block_bad = mtk_nand_block_bad;
++
++	//Qwert:Add for Uboot
++	mtk_nand_init_hw(host);
++	/* Select the device */
++	nand_chip->select_chip(mtd, NFI_DEFAULT_CS);
++
++	/*
++	* Reset the chip, required by some chips (e.g. Micron MT29FxGxxxxx)
++	* after power-up
++	*/
++	nand_chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
++
++	memset(&devinfo, 0 , sizeof(flashdev_info));
++
++	/* Send the command for reading device ID */
++
++	nand_chip->cmdfunc(mtd, NAND_CMD_READID, 0x00, -1);
++
++	/* Read manufacturer and device IDs */
++	manu_id = nand_chip->read_byte(mtd);
++	dev_id = nand_chip->read_byte(mtd);
++	id = dev_id | (manu_id << 8);
++	        ext_id1 = nand_chip->read_byte(mtd);
++		    ext_id2 = nand_chip->read_byte(mtd);
++		        ext_id3 = nand_chip->read_byte(mtd);
++			    ext_id = ext_id1 << 16 | ext_id2 << 8 | ext_id3;
++	if (!get_device_info(id, ext_id, &devinfo)) {
++		u32 chip_mode = RALINK_REG(RALINK_SYSCTL_BASE+0x010)&0x0F;
++		MSG(INIT, "Not Support this Device! \r\n");
++		memset(&devinfo, 0 , sizeof(flashdev_info));
++		MSG(INIT, "chip_mode=%08X\n",chip_mode);
++
++		/* apply bootstrap first */
++		devinfo.addr_cycle = 5;
++		devinfo.iowidth = 8;
++
++		switch (chip_mode) {
++		case 10:
++			devinfo.pagesize = 2048;
++			devinfo.sparesize = 128;
++			devinfo.totalsize = 128;
++			devinfo.blocksize = 128;
++			break;
++		case 11:
++			devinfo.pagesize = 4096;
++			devinfo.sparesize = 128;
++			devinfo.totalsize = 1024;
++			devinfo.blocksize = 256;
++			break;
++		case 12:
++			devinfo.pagesize = 4096;
++			devinfo.sparesize = 224;
++			devinfo.totalsize = 2048;
++			devinfo.blocksize = 512;
++			break;
++		default:
++		case 1:
++			devinfo.pagesize = 2048;
++			devinfo.sparesize = 64;
++			devinfo.totalsize = 128;
++			devinfo.blocksize = 128;
++			break;
++		}
++
++		devinfo.timmingsetting = NFI_DEFAULT_ACCESS_TIMING;
++		devinfo.devciename[0] = 'U';
++		devinfo.advancedmode = 0;
++	}
++	mtd->writesize = devinfo.pagesize;
++	mtd->erasesize = (devinfo.blocksize<<10);
++	mtd->oobsize = devinfo.sparesize;
++
++	nand_chip->chipsize = (devinfo.totalsize<<20);
++	nand_chip->page_shift = ffs(mtd->writesize) - 1;
++	nand_chip->pagemask = (nand_chip->chipsize >> nand_chip->page_shift) - 1;
++	nand_chip->phys_erase_shift = ffs(mtd->erasesize) - 1;
++	nand_chip->chip_shift = ffs(nand_chip->chipsize) - 1;//0x1C;//ffs(nand_chip->chipsize) - 1;
++	nand_chip->oob_poi = nand_chip->buffers->databuf + mtd->writesize;
++	nand_chip->badblockpos = 0;
++
++	if (devinfo.pagesize == 4096)
++		nand_chip->ecc.layout = &nand_oob_128;
++	else if (devinfo.pagesize == 2048)
++		nand_chip->ecc.layout = &nand_oob_64;
++	else if (devinfo.pagesize == 512)
++		nand_chip->ecc.layout = &nand_oob_16;
++
++	nand_chip->ecc.layout->eccbytes = devinfo.sparesize-OOB_AVAI_PER_SECTOR*(devinfo.pagesize/NAND_SECTOR_SIZE);
++	for (i = 0; i < nand_chip->ecc.layout->eccbytes; i++)
++		nand_chip->ecc.layout->eccpos[i]=OOB_AVAI_PER_SECTOR*(devinfo.pagesize/NAND_SECTOR_SIZE)+i;
++
++	MSG(INIT, "Support this Device in MTK table! %x \r\n", id);
++	hw->nfi_bus_width = devinfo.iowidth;
++	DRV_WriteReg32(NFI_ACCCON_REG32, devinfo.timmingsetting);
++
++	/* 16-bit bus width */
++	if (hw->nfi_bus_width == 16) {
++		MSG(INIT, "%s : Set the 16-bit I/O settings!\n", MODULE_NAME);
++		nand_chip->options |= NAND_BUSWIDTH_16;
++	}
++	mtd->oobsize = devinfo.sparesize;
++	hw->nfi_cs_num = 1;
++
++	/* Scan to find existance of the device */
++	if (nand_scan(mtd, hw->nfi_cs_num)) {
++		MSG(INIT, "%s : nand_scan fail.\n", MODULE_NAME);
++		err = -ENXIO;
++		goto out;
++	}
++
++	g_page_size = mtd->writesize;
++	platform_set_drvdata(pdev, host);
++	if (hw->nfi_bus_width == 16) {
++		NFI_SET_REG16(NFI_PAGEFMT_REG16, PAGEFMT_DBYTE_EN);
++	}
++
++	nand_chip->select_chip(mtd, 0);
++#if defined(MTK_NAND_BMT)  
++	nand_chip->chipsize -= (BMT_POOL_SIZE) << nand_chip->phys_erase_shift;
++#endif
++	mtd->size = nand_chip->chipsize;
++
++	CFG_BLOCKSIZE = mtd->erasesize;
++
++#if defined(MTK_NAND_BMT)
++	if (!g_bmt) {
++		if (!(g_bmt = init_bmt(nand_chip, BMT_POOL_SIZE))) {
++			MSG(INIT, "Error: init bmt failed\n");
++			return 0;
++		}
++	}
++#endif
++
++	ppdata.of_node = pdev->dev.of_node;
++	err = mtd_device_parse_register(mtd, probe_types, &ppdata,
++					NULL, 0);
++	if (!err) {
++		MSG(INIT, "[mtk_nand] probe successfully!\n");
++		nand_disable_clock();
++		shift_on_bbt = 1;
++		if (load_fact_bbt(mtd) == 0) {
++			int i;
++			for (i = 0; i < 0x100; i++)
++				nand_chip->bbt[i] |= fact_bbt[i];
++		}
++
++		return err;
++	}
++
++out:
++	MSG(INIT, "[NFI] mtk_nand_probe fail, err = %d!\n", err);
++	nand_release(mtd);
++	platform_set_drvdata(pdev, NULL);
++	kfree(host);
++	nand_disable_clock();
++	return err;
++}
++
++static int
++mtk_nand_remove(struct platform_device *pdev)
++{
++	struct mtk_nand_host *host = platform_get_drvdata(pdev);
++	struct mtd_info *mtd = &host->mtd;
++
++	nand_release(mtd);
++	kfree(host);
++	nand_disable_clock();
++
++	return 0;
++}
++
++static const struct of_device_id mt7621_nand_match[] = {
++	{ .compatible = "mtk,mt7621-nand" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7621_nand_match);
++
++static struct platform_driver mtk_nand_driver = {
++	.probe = mtk_nand_probe,
++	.remove = mtk_nand_remove,
++	.driver = {
++		.name = "MT7621-NAND",
++		.owner = THIS_MODULE,
++		.of_match_table = mt7621_nand_match,
++	},
++};
++
++static int __init
++mtk_nand_init(void)
++{
++	printk("MediaTek Nand driver init, version %s\n", VERSION);
++
++	return platform_driver_register(&mtk_nand_driver);
++}
++
++static void __exit
++mtk_nand_exit(void)
++{
++	platform_driver_unregister(&mtk_nand_driver);
++}
++
++module_init(mtk_nand_init);
++module_exit(mtk_nand_exit);
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/drivers/mtd/nand/mtk_nand.h
+@@ -0,0 +1,452 @@
++#ifndef __MTK_NAND_H
++#define __MTK_NAND_H
++
++#define RALINK_NAND_CTRL_BASE         0xBE003000
++#define RALINK_SYSCTL_BASE            0xBE000000
++#define RALINK_NANDECC_CTRL_BASE      0xBE003800
++/*******************************************************************************
++ * NFI Register Definition 
++ *******************************************************************************/
++
++#define NFI_CNFG_REG16  	((volatile P_U16)(NFI_BASE+0x0000))
++#define NFI_PAGEFMT_REG16   ((volatile P_U16)(NFI_BASE+0x0004))
++#define NFI_CON_REG16      	((volatile P_U16)(NFI_BASE+0x0008))
++#define NFI_ACCCON_REG32   	((volatile P_U32)(NFI_BASE+0x000C))
++#define NFI_INTR_EN_REG16   ((volatile P_U16)(NFI_BASE+0x0010))
++#define NFI_INTR_REG16      ((volatile P_U16)(NFI_BASE+0x0014))
++
++#define NFI_CMD_REG16   	((volatile P_U16)(NFI_BASE+0x0020))
++
++#define NFI_ADDRNOB_REG16   ((volatile P_U16)(NFI_BASE+0x0030))
++#define NFI_COLADDR_REG32  	((volatile P_U32)(NFI_BASE+0x0034))
++#define NFI_ROWADDR_REG32  	((volatile P_U32)(NFI_BASE+0x0038))
++
++#define NFI_STRDATA_REG16   ((volatile P_U16)(NFI_BASE+0x0040))
++
++#define NFI_DATAW_REG32    	((volatile P_U32)(NFI_BASE+0x0050))
++#define NFI_DATAR_REG32    	((volatile P_U32)(NFI_BASE+0x0054))
++#define NFI_PIO_DIRDY_REG16 ((volatile P_U16)(NFI_BASE+0x0058))
++
++#define NFI_STA_REG32      	((volatile P_U32)(NFI_BASE+0x0060))
++#define NFI_FIFOSTA_REG16   ((volatile P_U16)(NFI_BASE+0x0064))
++#define NFI_LOCKSTA_REG16   ((volatile P_U16)(NFI_BASE+0x0068))
++
++#define NFI_ADDRCNTR_REG16  ((volatile P_U16)(NFI_BASE+0x0070))
++
++#define NFI_STRADDR_REG32  	((volatile P_U32)(NFI_BASE+0x0080))
++#define NFI_BYTELEN_REG16   ((volatile P_U16)(NFI_BASE+0x0084))
++
++#define NFI_CSEL_REG16      ((volatile P_U16)(NFI_BASE+0x0090))
++#define NFI_IOCON_REG16     ((volatile P_U16)(NFI_BASE+0x0094))
++
++#define NFI_FDM0L_REG32    	((volatile P_U32)(NFI_BASE+0x00A0))
++#define NFI_FDM0M_REG32    	((volatile P_U32)(NFI_BASE+0x00A4))
++
++#define NFI_LOCK_REG16	  	((volatile P_U16)(NFI_BASE+0x0100))
++#define NFI_LOCKCON_REG32  	((volatile P_U32)(NFI_BASE+0x0104))
++#define NFI_LOCKANOB_REG16  ((volatile P_U16)(NFI_BASE+0x0108))
++#define NFI_LOCK00ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0110))
++#define NFI_LOCK00FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0114))
++#define NFI_LOCK01ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0118))
++#define NFI_LOCK01FMT_REG32 ((volatile P_U32)(NFI_BASE+0x011C))
++#define NFI_LOCK02ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0120))
++#define NFI_LOCK02FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0124))
++#define NFI_LOCK03ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0128))
++#define NFI_LOCK03FMT_REG32 ((volatile P_U32)(NFI_BASE+0x012C))
++#define NFI_LOCK04ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0130))
++#define NFI_LOCK04FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0134))
++#define NFI_LOCK05ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0138))
++#define NFI_LOCK05FMT_REG32 ((volatile P_U32)(NFI_BASE+0x013C))
++#define NFI_LOCK06ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0140))
++#define NFI_LOCK06FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0144))
++#define NFI_LOCK07ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0148))
++#define NFI_LOCK07FMT_REG32 ((volatile P_U32)(NFI_BASE+0x014C))
++#define NFI_LOCK08ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0150))
++#define NFI_LOCK08FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0154))
++#define NFI_LOCK09ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0158))
++#define NFI_LOCK09FMT_REG32 ((volatile P_U32)(NFI_BASE+0x015C))
++#define NFI_LOCK10ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0160))
++#define NFI_LOCK10FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0164))
++#define NFI_LOCK11ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0168))
++#define NFI_LOCK11FMT_REG32 ((volatile P_U32)(NFI_BASE+0x016C))
++#define NFI_LOCK12ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0170))
++#define NFI_LOCK12FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0174))
++#define NFI_LOCK13ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0178))
++#define NFI_LOCK13FMT_REG32 ((volatile P_U32)(NFI_BASE+0x017C))
++#define NFI_LOCK14ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0180))
++#define NFI_LOCK14FMT_REG32 ((volatile P_U32)(NFI_BASE+0x0184))
++#define NFI_LOCK15ADD_REG32 ((volatile P_U32)(NFI_BASE+0x0188))
++#define NFI_LOCK15FMT_REG32 ((volatile P_U32)(NFI_BASE+0x018C))
++
++#define NFI_FIFODATA0_REG32 ((volatile P_U32)(NFI_BASE+0x0190))
++#define NFI_FIFODATA1_REG32 ((volatile P_U32)(NFI_BASE+0x0194))
++#define NFI_FIFODATA2_REG32 ((volatile P_U32)(NFI_BASE+0x0198))
++#define NFI_FIFODATA3_REG32 ((volatile P_U32)(NFI_BASE+0x019C))
++#define NFI_MASTERSTA_REG16 ((volatile P_U16)(NFI_BASE+0x0210))
++
++
++/*******************************************************************************
++ * NFI Register Field Definition 
++ *******************************************************************************/
++
++/* NFI_CNFG */
++#define CNFG_AHB             (0x0001)
++#define CNFG_READ_EN         (0x0002)
++#define CNFG_DMA_BURST_EN    (0x0004)
++#define CNFG_BYTE_RW         (0x0040)
++#define CNFG_HW_ECC_EN       (0x0100)
++#define CNFG_AUTO_FMT_EN     (0x0200)
++#define CNFG_OP_IDLE         (0x0000)
++#define CNFG_OP_READ         (0x1000)
++#define CNFG_OP_SRD          (0x2000)
++#define CNFG_OP_PRGM         (0x3000)
++#define CNFG_OP_ERASE        (0x4000)
++#define CNFG_OP_RESET        (0x5000)
++#define CNFG_OP_CUST         (0x6000)
++#define CNFG_OP_MODE_MASK    (0x7000)
++#define CNFG_OP_MODE_SHIFT   (12)
++
++/* NFI_PAGEFMT */
++#define PAGEFMT_512          (0x0000)
++#define PAGEFMT_2K           (0x0001)
++#define PAGEFMT_4K           (0x0002)
++
++#define PAGEFMT_PAGE_MASK    (0x0003)
++
++#define PAGEFMT_DBYTE_EN     (0x0008)
++
++#define PAGEFMT_SPARE_16     (0x0000)
++#define PAGEFMT_SPARE_26     (0x0001)
++#define PAGEFMT_SPARE_27     (0x0002)
++#define PAGEFMT_SPARE_28     (0x0003)
++#define PAGEFMT_SPARE_MASK   (0x0030)
++#define PAGEFMT_SPARE_SHIFT  (4)
++
++#define PAGEFMT_FDM_MASK     (0x0F00)
++#define PAGEFMT_FDM_SHIFT    (8)
++
++#define PAGEFMT_FDM_ECC_MASK  (0xF000)
++#define PAGEFMT_FDM_ECC_SHIFT (12)
++
++/* NFI_CON */
++#define CON_FIFO_FLUSH       (0x0001)
++#define CON_NFI_RST          (0x0002)
++#define CON_NFI_SRD          (0x0010)
++
++#define CON_NFI_NOB_MASK     (0x0060)
++#define CON_NFI_NOB_SHIFT    (5)
++
++#define CON_NFI_BRD          (0x0100)
++#define CON_NFI_BWR          (0x0200)
++
++#define CON_NFI_SEC_MASK     (0xF000)
++#define CON_NFI_SEC_SHIFT    (12)
++
++/* NFI_ACCCON */
++#define ACCCON_SETTING       ()
++
++/* NFI_INTR_EN */
++#define INTR_RD_DONE_EN      (0x0001)
++#define INTR_WR_DONE_EN      (0x0002)
++#define INTR_RST_DONE_EN     (0x0004)
++#define INTR_ERASE_DONE_EN   (0x0008)
++#define INTR_BSY_RTN_EN      (0x0010)
++#define INTR_ACC_LOCK_EN     (0x0020)
++#define INTR_AHB_DONE_EN     (0x0040)
++#define INTR_ALL_INTR_DE     (0x0000)
++#define INTR_ALL_INTR_EN     (0x007F)
++
++/* NFI_INTR */
++#define INTR_RD_DONE         (0x0001)
++#define INTR_WR_DONE         (0x0002)
++#define INTR_RST_DONE        (0x0004)
++#define INTR_ERASE_DONE      (0x0008)
++#define INTR_BSY_RTN         (0x0010)
++#define INTR_ACC_LOCK        (0x0020)
++#define INTR_AHB_DONE        (0x0040)
++
++/* NFI_ADDRNOB */
++#define ADDR_COL_NOB_MASK    (0x0003)
++#define ADDR_COL_NOB_SHIFT   (0)
++#define ADDR_ROW_NOB_MASK    (0x0030)
++#define ADDR_ROW_NOB_SHIFT   (4)
++
++/* NFI_STA */
++#define STA_READ_EMPTY       (0x00001000)
++#define STA_ACC_LOCK         (0x00000010)
++#define STA_CMD_STATE        (0x00000001)
++#define STA_ADDR_STATE       (0x00000002)
++#define STA_DATAR_STATE      (0x00000004)
++#define STA_DATAW_STATE      (0x00000008)
++
++#define STA_NAND_FSM_MASK    (0x1F000000)
++#define STA_NAND_BUSY        (0x00000100)
++#define STA_NAND_BUSY_RETURN (0x00000200)
++#define STA_NFI_FSM_MASK     (0x000F0000)
++#define STA_NFI_OP_MASK      (0x0000000F)
++
++/* NFI_FIFOSTA */
++#define FIFO_RD_EMPTY        (0x0040)
++#define FIFO_RD_FULL         (0x0080)
++#define FIFO_WR_FULL         (0x8000)
++#define FIFO_WR_EMPTY        (0x4000)
++#define FIFO_RD_REMAIN(x)    (0x1F&(x))
++#define FIFO_WR_REMAIN(x)    ((0x1F00&(x))>>8)
++
++/* NFI_ADDRCNTR */
++#define ADDRCNTR_CNTR(x)     ((0xF000&(x))>>12)
++#define ADDRCNTR_OFFSET(x)   (0x03FF&(x))
++
++/* NFI_LOCK */
++#define NFI_LOCK_ON          (0x0001)
++
++/* NFI_LOCKANOB */
++#define PROG_RADD_NOB_MASK   (0x7000)
++#define PROG_RADD_NOB_SHIFT  (12)
++#define PROG_CADD_NOB_MASK   (0x0300)
++#define PROG_CADD_NOB_SHIFT  (8)
++#define ERASE_RADD_NOB_MASK   (0x0070)
++#define ERASE_RADD_NOB_SHIFT  (4)
++#define ERASE_CADD_NOB_MASK   (0x0007)
++#define ERASE_CADD_NOB_SHIFT  (0)
++
++/*******************************************************************************
++ * ECC Register Definition 
++ *******************************************************************************/
++
++#define ECC_ENCCON_REG16	((volatile P_U16)(NFIECC_BASE+0x0000))
++#define ECC_ENCCNFG_REG32  	((volatile P_U32)(NFIECC_BASE+0x0004))
++#define ECC_ENCDIADDR_REG32	((volatile P_U32)(NFIECC_BASE+0x0008))
++#define ECC_ENCIDLE_REG32  	((volatile P_U32)(NFIECC_BASE+0x000C))
++#define ECC_ENCPAR0_REG32   ((volatile P_U32)(NFIECC_BASE+0x0010))
++#define ECC_ENCPAR1_REG32   ((volatile P_U32)(NFIECC_BASE+0x0014))
++#define ECC_ENCPAR2_REG32   ((volatile P_U32)(NFIECC_BASE+0x0018))
++#define ECC_ENCPAR3_REG32   ((volatile P_U32)(NFIECC_BASE+0x001C))
++#define ECC_ENCPAR4_REG32   ((volatile P_U32)(NFIECC_BASE+0x0020))
++#define ECC_ENCSTA_REG32    ((volatile P_U32)(NFIECC_BASE+0x0024))
++#define ECC_ENCIRQEN_REG16  ((volatile P_U16)(NFIECC_BASE+0x0028))
++#define ECC_ENCIRQSTA_REG16 ((volatile P_U16)(NFIECC_BASE+0x002C))
++
++#define ECC_DECCON_REG16    ((volatile P_U16)(NFIECC_BASE+0x0100))
++#define ECC_DECCNFG_REG32   ((volatile P_U32)(NFIECC_BASE+0x0104))
++#define ECC_DECDIADDR_REG32 ((volatile P_U32)(NFIECC_BASE+0x0108))
++#define ECC_DECIDLE_REG16   ((volatile P_U16)(NFIECC_BASE+0x010C))
++#define ECC_DECFER_REG16    ((volatile P_U16)(NFIECC_BASE+0x0110))
++#define ECC_DECENUM_REG32   ((volatile P_U32)(NFIECC_BASE+0x0114))
++#define ECC_DECDONE_REG16   ((volatile P_U16)(NFIECC_BASE+0x0118))
++#define ECC_DECEL0_REG32    ((volatile P_U32)(NFIECC_BASE+0x011C))
++#define ECC_DECEL1_REG32    ((volatile P_U32)(NFIECC_BASE+0x0120))
++#define ECC_DECEL2_REG32    ((volatile P_U32)(NFIECC_BASE+0x0124))
++#define ECC_DECEL3_REG32    ((volatile P_U32)(NFIECC_BASE+0x0128))
++#define ECC_DECEL4_REG32    ((volatile P_U32)(NFIECC_BASE+0x012C))
++#define ECC_DECEL5_REG32    ((volatile P_U32)(NFIECC_BASE+0x0130))
++#define ECC_DECIRQEN_REG16  ((volatile P_U16)(NFIECC_BASE+0x0134))
++#define ECC_DECIRQSTA_REG16 ((volatile P_U16)(NFIECC_BASE+0x0138))
++#define ECC_FDMADDR_REG32   ((volatile P_U32)(NFIECC_BASE+0x013C))
++#define ECC_DECFSM_REG32    ((volatile P_U32)(NFIECC_BASE+0x0140))
++#define ECC_SYNSTA_REG32    ((volatile P_U32)(NFIECC_BASE+0x0144))
++#define ECC_DECNFIDI_REG32  ((volatile P_U32)(NFIECC_BASE+0x0148))
++#define ECC_SYN0_REG32      ((volatile P_U32)(NFIECC_BASE+0x014C))
++
++/*******************************************************************************
++ * ECC register definition
++ *******************************************************************************/
++/* ECC_ENCON */
++#define ENC_EN             		(0x0001)
++#define ENC_DE                 	(0x0000)
++
++/* ECC_ENCCNFG */
++#define ECC_CNFG_ECC4          	(0x0000)
++#define ECC_CNFG_ECC6          	(0x0001)
++#define ECC_CNFG_ECC8          	(0x0002)
++#define ECC_CNFG_ECC10         	(0x0003)
++#define ECC_CNFG_ECC12         	(0x0004)
++#define ECC_CNFG_ECC_MASK      	(0x00000007)
++
++#define ENC_CNFG_NFI           	(0x0010)
++#define ENC_CNFG_MODE_MASK     	(0x0010)
++
++#define ENC_CNFG_META6         	(0x10300000)
++#define ENC_CNFG_META8         	(0x10400000)
++
++#define ENC_CNFG_MSG_MASK  		(0x1FFF0000)
++#define ENC_CNFG_MSG_SHIFT 		(0x10)
++
++/* ECC_ENCIDLE */
++#define ENC_IDLE           		(0x0001)
++
++/* ECC_ENCSTA */
++#define STA_FSM            		(0x001F)
++#define STA_COUNT_PS       		(0xFF10)
++#define STA_COUNT_MS       		(0x3FFF0000)
++
++/* ECC_ENCIRQEN */
++#define ENC_IRQEN          		(0x0001)
++
++/* ECC_ENCIRQSTA */
++#define ENC_IRQSTA         		(0x0001)
++
++/* ECC_DECCON */
++#define DEC_EN             		(0x0001)
++#define DEC_DE             		(0x0000)
++
++/* ECC_ENCCNFG */
++#define DEC_CNFG_ECC4          (0x0000)
++//#define DEC_CNFG_ECC6          (0x0001)
++//#define DEC_CNFG_ECC12         (0x0002)
++#define DEC_CNFG_NFI           (0x0010)
++//#define DEC_CNFG_META6         (0x10300000)
++//#define DEC_CNFG_META8         (0x10400000)
++
++#define DEC_CNFG_FER           (0x01000)
++#define DEC_CNFG_EL            (0x02000)
++#define DEC_CNFG_CORRECT       (0x03000)
++#define DEC_CNFG_TYPE_MASK     (0x03000)
++
++#define DEC_CNFG_EMPTY_EN      (0x80000000)
++
++#define DEC_CNFG_CODE_MASK     (0x1FFF0000)
++#define DEC_CNFG_CODE_SHIFT    (0x10)
++
++/* ECC_DECIDLE */
++#define DEC_IDLE           		(0x0001)
++
++/* ECC_DECFER */
++#define DEC_FER0               (0x0001)
++#define DEC_FER1               (0x0002)
++#define DEC_FER2               (0x0004)
++#define DEC_FER3               (0x0008)
++#define DEC_FER4               (0x0010)
++#define DEC_FER5               (0x0020)
++#define DEC_FER6               (0x0040)
++#define DEC_FER7               (0x0080)
++
++/* ECC_DECENUM */
++#define ERR_NUM0               (0x0000000F)
++#define ERR_NUM1               (0x000000F0)
++#define ERR_NUM2               (0x00000F00)
++#define ERR_NUM3               (0x0000F000)
++#define ERR_NUM4               (0x000F0000)
++#define ERR_NUM5               (0x00F00000)
++#define ERR_NUM6               (0x0F000000)
++#define ERR_NUM7               (0xF0000000)
++
++/* ECC_DECDONE */
++#define DEC_DONE0               (0x0001)
++#define DEC_DONE1               (0x0002)
++#define DEC_DONE2               (0x0004)
++#define DEC_DONE3               (0x0008)
++#define DEC_DONE4               (0x0010)
++#define DEC_DONE5               (0x0020)
++#define DEC_DONE6               (0x0040)
++#define DEC_DONE7               (0x0080)
++
++/* ECC_DECIRQEN */
++#define DEC_IRQEN         		(0x0001)
++
++/* ECC_DECIRQSTA */
++#define DEC_IRQSTA      		(0x0001)
++
++#define CHIPVER_ECO_1           (0x8a00)
++#define CHIPVER_ECO_2           (0x8a01)
++
++//#define NAND_PFM
++
++/*******************************************************************************
++ * Data Structure Definition
++ *******************************************************************************/
++struct mtk_nand_host 
++{
++	struct nand_chip		nand_chip;
++	struct mtd_info			mtd;
++	struct mtk_nand_host_hw	*hw;
++};
++
++struct NAND_CMD
++{
++	u32	u4ColAddr;
++	u32 u4RowAddr;
++	u32 u4OOBRowAddr;
++	u8	au1OOB[288];
++	u8*	pDataBuf;
++#ifdef NAND_PFM	
++	u32 pureReadOOB;
++	u32 pureReadOOBNum;
++#endif
++};
++
++/*
++ *	ECC layout control structure. Exported to userspace for
++ *  diagnosis and to allow creation of raw images
++struct nand_ecclayout {
++	uint32_t eccbytes;
++	uint32_t eccpos[64];
++	uint32_t oobavail;
++	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES];
++};
++*/
++#define __DEBUG_NAND		1			/* Debug information on/off */
++
++/* Debug message event */
++#define DBG_EVT_NONE		0x00000000	/* No event */
++#define DBG_EVT_INIT		0x00000001	/* Initial related event */
++#define DBG_EVT_VERIFY		0x00000002	/* Verify buffer related event */
++#define DBG_EVT_PERFORMANCE	0x00000004	/* Performance related event */
++#define DBG_EVT_READ		0x00000008	/* Read related event */
++#define DBG_EVT_WRITE		0x00000010	/* Write related event */
++#define DBG_EVT_ERASE		0x00000020	/* Erase related event */
++#define DBG_EVT_BADBLOCK	0x00000040	/* Badblock related event */
++#define DBG_EVT_POWERCTL	0x00000080	/* Suspend/Resume related event */
++
++#define DBG_EVT_ALL			0xffffffff
++
++#define DBG_EVT_MASK      	(DBG_EVT_INIT)
++
++#if __DEBUG_NAND
++#define MSG(evt, fmt, args...) \
++do {	\
++	if ((DBG_EVT_##evt) & DBG_EVT_MASK) { \
++		printk(fmt, ##args); \
++	} \
++} while(0)
++
++#define MSG_FUNC_ENTRY(f)	MSG(FUC, "<FUN_ENT>: %s\n", __FUNCTION__)
++#else
++#define MSG(evt, fmt, args...) do{}while(0)
++#define MSG_FUNC_ENTRY(f)	   do{}while(0)
++#endif
++
++#define RAMDOM_READ 1<<0
++#define CACHE_READ  1<<1
++
++typedef struct
++{
++   u16 id;          //deviceid+menuid
++   u32 ext_id; 
++   u8  addr_cycle;
++   u8  iowidth;
++   u16 totalsize;   
++   u16 blocksize;
++   u16 pagesize;
++   u16 sparesize;
++   u32 timmingsetting;
++   char devciename[14];
++   u32 advancedmode;   //
++}flashdev_info,*pflashdev_info;
++
++/* NAND driver */
++#if 0
++struct mtk_nand_host_hw {
++    unsigned int nfi_bus_width;		    /* NFI_BUS_WIDTH */ 
++	unsigned int nfi_access_timing;		/* NFI_ACCESS_TIMING */  
++	unsigned int nfi_cs_num;			/* NFI_CS_NUM */
++	unsigned int nand_sec_size;			/* NAND_SECTOR_SIZE */
++	unsigned int nand_sec_shift;		/* NAND_SECTOR_SHIFT */
++	unsigned int nand_ecc_size;
++	unsigned int nand_ecc_bytes;
++	unsigned int nand_ecc_mode;
++};
++extern struct mtk_nand_host_hw mt7621_nand_hw;
++extern u32	CFG_BLOCKSIZE;
++#endif
++#endif
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -92,7 +92,7 @@ static struct nand_ecclayout nand_oob_12
+ 		 .length = 78} }
+ };
+ 
+-static int nand_get_device(struct mtd_info *mtd, int new_state);
++int nand_get_device(struct mtd_info *mtd, int new_state);
+ 
+ static int nand_do_write_oob(struct mtd_info *mtd, loff_t to,
+ 			     struct mtd_oob_ops *ops);
+@@ -130,7 +130,7 @@ static int check_offs_len(struct mtd_inf
+  *
+  * Release chip lock and wake up anyone waiting on the device.
+  */
+-static void nand_release_device(struct mtd_info *mtd)
++void nand_release_device(struct mtd_info *mtd)
+ {
+ 	struct nand_chip *chip = mtd->priv;
+ 
+@@ -829,7 +829,7 @@ static void panic_nand_get_device(struct
+  *
+  * Get the device and lock it for exclusive access
+  */
+-static int
++int
+ nand_get_device(struct mtd_info *mtd, int new_state)
+ {
+ 	struct nand_chip *chip = mtd->priv;
+--- a/drivers/mtd/nand/nand_bbt.c
++++ b/drivers/mtd/nand/nand_bbt.c
+@@ -1374,4 +1374,23 @@ int nand_markbad_bbt(struct mtd_info *mt
+ 	return ret;
+ }
+ 
++void nand_bbt_set(struct mtd_info *mtd, int page, int flag)
++{
++	struct nand_chip *this = mtd->priv;
++	int block;
++
++	block = (int)(page >> (this->bbt_erase_shift - this->page_shift - 1));
++	this->bbt[block >> 3] &= ~(0x03 << (block & 0x6));
++	this->bbt[block >> 3] |= (flag & 0x3) << (block & 0x6);
++}
++
++int nand_bbt_get(struct mtd_info *mtd, int page)
++{
++	struct nand_chip *this = mtd->priv;
++	int block;
++
++	block = (int)(page >> (this->bbt_erase_shift - this->page_shift - 1));
++	return (this->bbt[block >> 3] >> (block & 0x06)) & 0x03;
++}
++
+ EXPORT_SYMBOL(nand_scan_bbt);
+--- /dev/null
++++ b/drivers/mtd/nand/nand_def.h
+@@ -0,0 +1,123 @@
++#ifndef __NAND_DEF_H__
++#define __NAND_DEF_H__
++
++#define VERSION  	"v2.1 Fix AHB virt2phys error"
++#define MODULE_NAME	"# MTK NAND #"
++#define PROCNAME    "driver/nand"
++
++#undef TESTTIME
++//#define __UBOOT_NAND__			1
++#define __KERNEL_NAND__		1
++//#define __PRELOADER_NAND__	1
++//#define PMT 1
++//#define _MTK_NAND_DUMMY_DRIVER
++//#define CONFIG_BADBLOCK_CHECK	1
++//#ifdef CONFIG_BADBLOCK_CHECK
++//#define MTK_NAND_BMT	1
++//#endif
++#define ECC_ENABLE		1
++#define MANUAL_CORRECT	1
++//#define __INTERNAL_USE_AHB_MODE__ 	(0)
++#define SKIP_BAD_BLOCK
++#define FACT_BBT
++
++#ifndef NAND_OTP_SUPPORT
++#define NAND_OTP_SUPPORT 0
++#endif
++
++/*******************************************************************************
++ * Macro definition 
++ *******************************************************************************/
++//#define NFI_SET_REG32(reg, value)   (DRV_WriteReg32(reg, DRV_Reg32(reg) | (value))) 
++//#define NFI_SET_REG16(reg, value)   (DRV_WriteReg16(reg, DRV_Reg16(reg) | (value)))
++//#define NFI_CLN_REG32(reg, value)   (DRV_WriteReg32(reg, DRV_Reg32(reg) & (~(value))))
++//#define NFI_CLN_REG16(reg, value)   (DRV_WriteReg16(reg, DRV_Reg16(reg) & (~(value))))
++
++#if defined (__KERNEL_NAND__)
++#define NFI_SET_REG32(reg, value) \
++do {	\
++	g_value = (DRV_Reg32(reg) | (value));\
++	DRV_WriteReg32(reg, g_value); \
++} while(0)
++
++#define NFI_SET_REG16(reg, value) \
++do {	\
++	g_value = (DRV_Reg16(reg) | (value));\
++	DRV_WriteReg16(reg, g_value); \
++} while(0)
++
++#define NFI_CLN_REG32(reg, value) \
++do {	\
++	g_value = (DRV_Reg32(reg) & (~(value)));\
++	DRV_WriteReg32(reg, g_value); \
++} while(0)
++
++#define NFI_CLN_REG16(reg, value) \
++do {	\
++	g_value = (DRV_Reg16(reg) & (~(value)));\
++	DRV_WriteReg16(reg, g_value); \
++} while(0)
++#endif
++
++#define NFI_WAIT_STATE_DONE(state) do{;}while (__raw_readl(NFI_STA_REG32) & state)
++#define NFI_WAIT_TO_READY()  do{;}while (!(__raw_readl(NFI_STA_REG32) & STA_BUSY2READY))
++
++
++#define NAND_SECTOR_SIZE (512)
++#define OOB_PER_SECTOR      (16)
++#define OOB_AVAI_PER_SECTOR (8)
++
++#ifndef PART_SIZE_BMTPOOL
++#define BMT_POOL_SIZE       (80)
++#else
++#define BMT_POOL_SIZE (PART_SIZE_BMTPOOL)
++#endif
++
++#define PMT_POOL_SIZE	(2)
++
++#define TIMEOUT_1   0x1fff
++#define TIMEOUT_2   0x8ff
++#define TIMEOUT_3   0xffff
++#define TIMEOUT_4   0xffff//5000   //PIO
++
++
++/* temporarity definiation */
++#if !defined (__KERNEL_NAND__) 
++#define KERN_INFO
++#define KERN_WARNING
++#define KERN_ERR
++#define PAGE_SIZE	(4096)
++#endif
++#define AddStorageTrace				//AddStorageTrace
++#define STORAGE_LOGGER_MSG_NAND		0
++#define NFI_BASE 					RALINK_NAND_CTRL_BASE
++#define NFIECC_BASE 				RALINK_NANDECC_CTRL_BASE
++
++#ifdef __INTERNAL_USE_AHB_MODE__
++#define MT65xx_POLARITY_LOW   0
++#define MT65XX_PDN_PERI_NFI   0
++#define MT65xx_EDGE_SENSITIVE 0
++#define MT6575_NFI_IRQ_ID                    (58)
++#endif
++
++#if defined (__KERNEL_NAND__)
++#define RALINK_REG(x)		(*((volatile u32 *)(x)))	
++#define __virt_to_phys(x)	virt_to_phys((volatile void*)x)
++#else
++#define CONFIG_MTD_NAND_VERIFY_WRITE	(1)
++#define printk	printf
++#define ra_dbg printf
++#define BUG()							//BUG()
++#define BUG_ON(x)						//BUG_ON()
++#define NUM_PARTITIONS 				1
++#endif
++
++#define NFI_DEFAULT_ACCESS_TIMING        (0x30C77fff)	//(0x44333)
++
++//uboot only support 1 cs
++#define NFI_CS_NUM                  (1)
++#define NFI_DEFAULT_CS              (0)
++
++#include "mt6575_typedefs.h"
++
++#endif /* __NAND_DEF_H__ */
+--- /dev/null
++++ b/drivers/mtd/nand/nand_device_list.h
+@@ -0,0 +1,55 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ */
++/* MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++#ifndef __NAND_DEVICE_LIST_H__
++#define __NAND_DEVICE_LIST_H__
++
++static const flashdev_info gen_FlashTable[]={
++	{0x20BC, 0x105554, 5, 16, 512, 128, 2048, 64, 0x1123, "EHD013151MA_5", 0},
++	{0xECBC, 0x005554, 5, 16, 512, 128, 2048, 64, 0x1123, "K524G2GACB_A0", 0},
++	{0x2CBC, 0x905556, 5, 16, 512, 128, 2048, 64, 0x21044333, "MT29C4G96MAZA", 0},
++	{0xADBC, 0x905554, 5, 16, 512, 128, 2048, 64, 0x10801011, "H9DA4GH4JJAMC", 0},
++    {0x01F1, 0x801D01, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "S34ML01G100TF", 0},
++    {0x92F1, 0x8095FF, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81A", 0},
++	{0xECD3, 0x519558, 5, 8, 1024, 128, 2048, 64, 0x44333, "K9K8G8000", 0},
++    {0xC2F1, 0x801DC2, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "MX30LF1G08AA", 0},
++    {0x98D3, 0x902676, 5, 8, 1024, 256, 4096, 224, 0x00C25332, "TC58NVG3S0F", 0},
++    {0x01DA, 0x909546, 5, 8, 256, 128, 2048, 128, 0x30C77fff, "S34ML02G200TF", 0},
++    {0x01DC, 0x909556, 5, 8, 512, 128, 2048, 128, 0x30C77fff, "S34ML04G200TF", 0},
++	{0x0000, 0x000000, 0, 0, 0, 0, 0, 0, 0, "xxxxxxxxxx", 0},
++};
++
++
++#endif
+--- /dev/null
++++ b/drivers/mtd/nand/partition.h
+@@ -0,0 +1,115 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ */
++/* MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++
++#define RECONFIG_PARTITION_SIZE 1
++
++#define MTD_BOOT_PART_SIZE  0x80000
++#define MTD_CONFIG_PART_SIZE    0x20000
++#define MTD_FACTORY_PART_SIZE   0x20000
++
++extern unsigned int  CFG_BLOCKSIZE;
++#define LARGE_MTD_BOOT_PART_SIZE       (CFG_BLOCKSIZE<<2)
++#define LARGE_MTD_CONFIG_PART_SIZE     (CFG_BLOCKSIZE<<2)
++#define LARGE_MTD_FACTORY_PART_SIZE    (CFG_BLOCKSIZE<<1)
++
++/*=======================================================================*/
++/* NAND PARTITION Mapping                                                  */
++/*=======================================================================*/
++//#ifdef CONFIG_MTD_PARTITIONS
++static struct mtd_partition g_pasStatic_Partition[] = {
++	{
++                name:           "ALL",
++                size:           MTDPART_SIZ_FULL,
++                offset:         0,
++        },
++        /* Put your own partition definitions here */
++        {
++                name:           "Bootloader",
++                size:           MTD_BOOT_PART_SIZE,
++                offset:         0,
++        }, {
++                name:           "Config",
++                size:           MTD_CONFIG_PART_SIZE,
++                offset:         MTDPART_OFS_APPEND
++        }, {
++                name:           "Factory",
++                size:           MTD_FACTORY_PART_SIZE,
++                offset:         MTDPART_OFS_APPEND
++#ifdef CONFIG_RT2880_ROOTFS_IN_FLASH
++        }, {
++                name:           "Kernel",
++                size:           MTD_KERN_PART_SIZE,
++                offset:         MTDPART_OFS_APPEND,
++        }, {
++                name:           "RootFS",
++                size:           MTD_ROOTFS_PART_SIZE,
++                offset:         MTDPART_OFS_APPEND,
++#ifdef CONFIG_ROOTFS_IN_FLASH_NO_PADDING
++        }, {
++                name:           "Kernel_RootFS",
++                size:           MTD_KERN_PART_SIZE + MTD_ROOTFS_PART_SIZE,
++                offset:         MTD_BOOT_PART_SIZE + MTD_CONFIG_PART_SIZE + MTD_FACTORY_PART_SIZE,
++#endif
++#else //CONFIG_RT2880_ROOTFS_IN_RAM
++        }, {
++                name:           "Kernel",
++                size:           0x10000,
++                offset:         MTDPART_OFS_APPEND,
++#endif
++#ifdef CONFIG_DUAL_IMAGE
++        }, {
++                name:           "Kernel2",
++                size:           MTD_KERN2_PART_SIZE,
++                offset:         MTD_KERN2_PART_OFFSET,
++#ifdef CONFIG_RT2880_ROOTFS_IN_FLASH
++        }, {
++                name:           "RootFS2",
++                size:           MTD_ROOTFS2_PART_SIZE,
++                offset:         MTD_ROOTFS2_PART_OFFSET,
++#endif
++#endif
++        }
++
++};
++
++#define NUM_PARTITIONS ARRAY_SIZE(g_pasStatic_Partition)
++extern int part_num;	// = NUM_PARTITIONS;
++//#endif
++#undef RECONFIG_PARTITION_SIZE
++

target/linux/ramips/patches-4.4/0040-nand-add-mtk-nand-hack-hook.patch

@@ -0,0 +1,157 @@
+From 61e17c2f864698033f4661e1fc7ba63d4d982491 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:21:55 +0100
+Subject: [PATCH 40/53] nand: add mtk-nand hack/hook
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mtd/nand/mtk_nand.c         |   34 ++++++++++++++++++++++++++++++----
+ drivers/mtd/nand/nand_base.c        |    9 ++++++++-
+ drivers/mtd/nand/nand_device_list.h |    2 ++
+ include/linux/mtd/nand.h            |    4 ++++
+ 4 files changed, 44 insertions(+), 5 deletions(-)
+
+--- a/drivers/mtd/nand/mtk_nand.c
++++ b/drivers/mtd/nand/mtk_nand.c
+@@ -110,6 +110,10 @@ int part_num = NUM_PARTITIONS;
+ int manu_id;
+ int dev_id;
+ 
++/* this constant was taken from linux/nand/nand.h v 3.14
++ * in later versions it seems it was removed in order to save a bit of space
++ */
++#define NAND_MAX_OOBSIZE 774
+ static u8 local_oob_buf[NAND_MAX_OOBSIZE];
+ 
+ static u8 nand_badblock_offset = 0;
+@@ -348,7 +352,7 @@ mtk_nand_check_bch_error(struct mtd_info
+ 		if (0xF == u4ErrNum) {
+ 			mtd->ecc_stats.failed++;
+ 			bRet = false;
+-			//printk(KERN_ERR"UnCorrectable at PageAddr=%d\n", u4PageAddr);
++			printk(KERN_ERR"mtk_nand: UnCorrectable at PageAddr=%d\n", u4PageAddr);
+ 		} else {
+ 			for (i = 0; i < ((u4ErrNum + 1) >> 1); ++i) {
+ 				au4ErrBitLoc[i] = DRV_Reg32(ECC_DECEL0_REG32 + i);
+@@ -1422,7 +1426,7 @@ mtk_nand_erase_hw(struct mtd_info *mtd,
+ {
+ 	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
+ 
+-	chip->erase_cmd(mtd, page);
++	chip->erase(mtd, page);
+ 
+ 	return chip->waitfunc(mtd, chip);
+ }
+@@ -2094,8 +2098,8 @@ mtk_nand_probe(struct platform_device *p
+ 	nand_chip->write_page = mtk_nand_write_page;
+ 	nand_chip->ecc.write_oob = mtk_nand_write_oob;
+ 	nand_chip->block_markbad = mtk_nand_block_markbad;   // need to add nand_get_device()/nand_release_device().
+-	//	nand_chip->erase = mtk_nand_erase;	
+-	//    nand_chip->read_page = mtk_nand_read_page;
++	nand_chip->erase_mtk = mtk_nand_erase;	
++	nand_chip->read_page = mtk_nand_read_page;
+ 	nand_chip->ecc.read_oob = mtk_nand_read_oob;
+ 	nand_chip->block_bad = mtk_nand_block_bad;
+ 
+@@ -2175,6 +2179,21 @@ mtk_nand_probe(struct platform_device *p
+ 	nand_chip->pagemask = (nand_chip->chipsize >> nand_chip->page_shift) - 1;
+ 	nand_chip->phys_erase_shift = ffs(mtd->erasesize) - 1;
+ 	nand_chip->chip_shift = ffs(nand_chip->chipsize) - 1;//0x1C;//ffs(nand_chip->chipsize) - 1;
++
++	/* allocate buffers or call select_chip here or a bit earlier*/
++	{
++		struct nand_buffers *nbuf = kzalloc(sizeof(*nbuf) + mtd->writesize + mtd->oobsize * 3, GFP_KERNEL);
++		if (!nbuf) {
++			return -ENOMEM;
++		}
++		nbuf->ecccalc = (uint8_t *)(nbuf + 1);
++		nbuf->ecccode = nbuf->ecccalc + mtd->oobsize;
++		nbuf->databuf = nbuf->ecccode + mtd->oobsize;
++
++		nand_chip->buffers = nbuf;
++		nand_chip->options |= NAND_OWN_BUFFERS;
++	}
++
+ 	nand_chip->oob_poi = nand_chip->buffers->databuf + mtd->writesize;
+ 	nand_chip->badblockpos = 0;
+ 
+@@ -2251,6 +2270,9 @@ out:
+ 	MSG(INIT, "[NFI] mtk_nand_probe fail, err = %d!\n", err);
+ 	nand_release(mtd);
+ 	platform_set_drvdata(pdev, NULL);
++	if ( NULL != nand_chip->buffers) {
++		kfree(nand_chip->buffers);
++	}
+ 	kfree(host);
+ 	nand_disable_clock();
+ 	return err;
+@@ -2261,8 +2283,12 @@ mtk_nand_remove(struct platform_device *
+ {
+ 	struct mtk_nand_host *host = platform_get_drvdata(pdev);
+ 	struct mtd_info *mtd = &host->mtd;
++	struct nand_chip *nand_chip = &host->nand_chip;
+ 
+ 	nand_release(mtd);
++	if ( NULL != nand_chip->buffers) {
++		kfree(nand_chip->buffers);
++	}
+ 	kfree(host);
+ 	nand_disable_clock();
+ 
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -1727,6 +1727,9 @@ static int nand_do_read_ops(struct mtd_i
+ 						 __func__, buf);
+ 
+ read_retry:
++#ifdef CONFIG_MTK_MTD_NAND
++			ret = chip->read_page(mtd, chip, bufpoi, page);
++#else
+ 			chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
+ 
+ 			/*
+@@ -1745,6 +1748,7 @@ read_retry:
+ 			else
+ 				ret = chip->ecc.read_page(mtd, chip, bufpoi,
+ 							  oob_required, page);
++#endif /* CONFIG_MTK_MTD_NAND */
+ 			if (ret < 0) {
+ 				if (use_bufpoi)
+ 					/* Invalidate page cache */
+@@ -2932,8 +2936,11 @@ int nand_erase_nand(struct mtd_info *mtd
+ 		if (page <= chip->pagebuf && chip->pagebuf <
+ 		    (page + pages_per_block))
+ 			chip->pagebuf = -1;
+-
++#ifdef CONFIG_MTK_MTD_NAND
++		status = chip->erase_mtk(mtd, page & chip->pagemask);
++#else
+ 		status = chip->erase(mtd, page & chip->pagemask);
++#endif /* CONFIG_MTK_MTD_NAND */
+ 
+ 		/*
+ 		 * See if operation failed and additional status checks are
+--- a/drivers/mtd/nand/nand_device_list.h
++++ b/drivers/mtd/nand/nand_device_list.h
+@@ -43,6 +43,8 @@ static const flashdev_info gen_FlashTabl
+ 	{0xADBC, 0x905554, 5, 16, 512, 128, 2048, 64, 0x10801011, "H9DA4GH4JJAMC", 0},
+     {0x01F1, 0x801D01, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "S34ML01G100TF", 0},
+     {0x92F1, 0x8095FF, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81A", 0},
++	{0xC8DA, 0x909544, 5, 8, 256, 128, 2048, 64, 0x30C77fff, "F59L2G81A", 0},
++	{0xC8DC, 0x909554, 5, 8, 512, 128, 2048, 64, 0x30C77fff, "F59L4G81A", 0},
+ 	{0xECD3, 0x519558, 5, 8, 1024, 128, 2048, 64, 0x44333, "K9K8G8000", 0},
+     {0xC2F1, 0x801DC2, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "MX30LF1G08AA", 0},
+     {0x98D3, 0x902676, 5, 8, 1024, 256, 4096, 224, 0x00C25332, "TC58NVG3S0F", 0},
+--- a/include/linux/mtd/nand.h
++++ b/include/linux/mtd/nand.h
+@@ -665,6 +665,10 @@ struct nand_chip {
+ 	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
+ 			uint32_t offset, int data_len, const uint8_t *buf,
+ 			int oob_required, int page, int cached, int raw);
++#ifdef CONFIG_MTK_MTD_NAND
++	int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, u8 *buf, int page);
++	int (*erase_mtk)(struct mtd_info *mtd, int page);
++#endif /* CONFIG_MTK_MTD_NAND */
+ 	int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ 			int feature_addr, uint8_t *subfeature_para);
+ 	int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,

target/linux/ramips/patches-4.4/0041-DT-Add-documentation-for-spi-rt2880.patch

@@ -0,0 +1,44 @@
+From da6015e7f19d749f135f7ac55c4ec47b06faa868 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Fri, 9 Aug 2013 20:12:59 +0200
+Subject: [PATCH 41/53] DT: Add documentation for spi-rt2880
+
+Describe the SPI master found on the MIPS based Ralink RT2880 SoC.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ .../devicetree/bindings/spi/spi-rt2880.txt         |   28 ++++++++++++++++++++
+ 1 file changed, 28 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/spi/spi-rt2880.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/spi/spi-rt2880.txt
+@@ -0,0 +1,28 @@
++Ralink SoC RT2880 SPI master controller.
++
++This SPI controller is found on most wireless SoCs made by ralink.
++
++Required properties:
++- compatible : "ralink,rt2880-spi"
++- reg : The register base for the controller.
++- #address-cells : <1>, as required by generic SPI binding.
++- #size-cells : <0>, also as required by generic SPI binding.
++
++Child nodes as per the generic SPI binding.
++
++Example:
++
++	spi@b00 {
++		compatible = "ralink,rt2880-spi";
++		reg = <0xb00 0x100>;
++
++		#address-cells = <1>;
++		#size-cells = <0>;
++
++		m25p80@0 {
++			compatible = "m25p80";
++			reg = <0>;
++			spi-max-frequency = <10000000>;
++		};
++	};
++

target/linux/ramips/patches-4.4/0042-SPI-ralink-add-Ralink-SoC-spi-driver.patch

@@ -0,0 +1,574 @@
+From 683af4ebb91a1600df1946ac4769d916b8a1be65 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 11:15:12 +0100
+Subject: [PATCH 42/53] SPI: ralink: add Ralink SoC spi driver
+
+Add the driver needed to make SPI work on Ralink SoC.
+
+Signed-off-by: Gabor Juhos <[email protected]>
+Acked-by: John Crispin <[email protected]>
+---
+ drivers/spi/Kconfig      |    6 +
+ drivers/spi/Makefile     |    1 +
+ drivers/spi/spi-rt2880.c |  530 ++++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 537 insertions(+)
+ create mode 100644 drivers/spi/spi-rt2880.c
+
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -477,6 +477,12 @@ config SPI_QUP
+ 	  This driver can also be built as a module.  If so, the module
+ 	  will be called spi_qup.
+ 
++config SPI_RT2880
++	tristate "Ralink RT288x SPI Controller"
++	depends on RALINK
++	help
++	  This selects a driver for the Ralink RT288x/RT305x SPI Controller.
++
+ config SPI_S3C24XX
+ 	tristate "Samsung S3C24XX series SPI"
+ 	depends on ARCH_S3C24XX
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -70,6 +70,7 @@ obj-$(CONFIG_SPI_QUP)			+= spi-qup.o
+ obj-$(CONFIG_SPI_ROCKCHIP)		+= spi-rockchip.o
+ obj-$(CONFIG_SPI_RB4XX)			+= spi-rb4xx.o
+ obj-$(CONFIG_SPI_RSPI)			+= spi-rspi.o
++obj-$(CONFIG_SPI_RT2880)		+= spi-rt2880.o
+ obj-$(CONFIG_SPI_S3C24XX)		+= spi-s3c24xx-hw.o
+ spi-s3c24xx-hw-y			:= spi-s3c24xx.o
+ spi-s3c24xx-hw-$(CONFIG_SPI_S3C24XX_FIQ) += spi-s3c24xx-fiq.o
+--- /dev/null
++++ b/drivers/spi/spi-rt2880.c
+@@ -0,0 +1,530 @@
++/*
++ * spi-rt2880.c -- Ralink RT288x/RT305x SPI controller driver
++ *
++ * Copyright (C) 2011 Sergiy <[email protected]>
++ * Copyright (C) 2011-2013 Gabor Juhos <[email protected]>
++ *
++ * Some parts are based on spi-orion.c:
++ *   Author: Shadi Ammouri <[email protected]>
++ *   Copyright (C) 2007-2008 Marvell Ltd.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/delay.h>
++#include <linux/io.h>
++#include <linux/reset.h>
++#include <linux/spi/spi.h>
++#include <linux/platform_device.h>
++#include <linux/gpio.h>
++
++#define DRIVER_NAME			"spi-rt2880"
++
++#define RAMIPS_SPI_STAT			0x00
++#define RAMIPS_SPI_CFG			0x10
++#define RAMIPS_SPI_CTL			0x14
++#define RAMIPS_SPI_DATA			0x20
++#define RAMIPS_SPI_ADDR			0x24
++#define RAMIPS_SPI_BS			0x28
++#define RAMIPS_SPI_USER			0x2C
++#define RAMIPS_SPI_TXFIFO		0x30
++#define RAMIPS_SPI_RXFIFO		0x34
++#define RAMIPS_SPI_FIFO_STAT		0x38
++#define RAMIPS_SPI_MODE			0x3C
++#define RAMIPS_SPI_DEV_OFFSET		0x40
++#define RAMIPS_SPI_DMA			0x80
++#define RAMIPS_SPI_DMASTAT		0x84
++#define RAMIPS_SPI_ARBITER		0xF0
++
++/* SPISTAT register bit field */
++#define SPISTAT_BUSY			BIT(0)
++
++/* SPICFG register bit field */
++#define SPICFG_ADDRMODE			BIT(12)
++#define SPICFG_RXENVDIS			BIT(11)
++#define SPICFG_RXCAP			BIT(10)
++#define SPICFG_SPIENMODE		BIT(9)
++#define SPICFG_MSBFIRST			BIT(8)
++#define SPICFG_SPICLKPOL		BIT(6)
++#define SPICFG_RXCLKEDGE_FALLING	BIT(5)
++#define SPICFG_TXCLKEDGE_FALLING	BIT(4)
++#define SPICFG_HIZSPI			BIT(3)
++#define SPICFG_SPICLK_PRESCALE_MASK	0x7
++#define SPICFG_SPICLK_DIV2		0
++#define SPICFG_SPICLK_DIV4		1
++#define SPICFG_SPICLK_DIV8		2
++#define SPICFG_SPICLK_DIV16		3
++#define SPICFG_SPICLK_DIV32		4
++#define SPICFG_SPICLK_DIV64		5
++#define SPICFG_SPICLK_DIV128		6
++#define SPICFG_SPICLK_DISABLE		7
++
++/* SPICTL register bit field */
++#define SPICTL_START			BIT(4)
++#define SPICTL_HIZSDO			BIT(3)
++#define SPICTL_STARTWR			BIT(2)
++#define SPICTL_STARTRD			BIT(1)
++#define SPICTL_SPIENA			BIT(0)
++
++/* SPIUSER register bit field */
++#define SPIUSER_USERMODE		BIT(21)
++#define SPIUSER_INSTR_PHASE		BIT(20)
++#define SPIUSER_ADDR_PHASE_MASK		0x7
++#define SPIUSER_ADDR_PHASE_OFFSET	17
++#define SPIUSER_MODE_PHASE		BIT(16)
++#define SPIUSER_DUMMY_PHASE_MASK	0x3
++#define SPIUSER_DUMMY_PHASE_OFFSET	14
++#define SPIUSER_DATA_PHASE_MASK		0x3
++#define SPIUSER_DATA_PHASE_OFFSET	12
++#define SPIUSER_DATA_READ		(BIT(0) << SPIUSER_DATA_PHASE_OFFSET)
++#define SPIUSER_DATA_WRITE		(BIT(1) << SPIUSER_DATA_PHASE_OFFSET)
++#define SPIUSER_ADDR_TYPE_OFFSET	9
++#define SPIUSER_MODE_TYPE_OFFSET	6
++#define SPIUSER_DUMMY_TYPE_OFFSET	3
++#define SPIUSER_DATA_TYPE_OFFSET	0
++#define SPIUSER_TRANSFER_MASK		0x7
++#define SPIUSER_TRANSFER_SINGLE		BIT(0)
++#define SPIUSER_TRANSFER_DUAL		BIT(1)
++#define SPIUSER_TRANSFER_QUAD		BIT(2)
++
++#define SPIUSER_TRANSFER_TYPE(type) ( \
++	(type << SPIUSER_ADDR_TYPE_OFFSET) | \
++	(type << SPIUSER_MODE_TYPE_OFFSET) | \
++	(type << SPIUSER_DUMMY_TYPE_OFFSET) | \
++	(type << SPIUSER_DATA_TYPE_OFFSET) \
++)
++
++/* SPIFIFOSTAT register bit field */
++#define SPIFIFOSTAT_TXEMPTY		BIT(19)
++#define SPIFIFOSTAT_RXEMPTY		BIT(18)
++#define SPIFIFOSTAT_TXFULL		BIT(17)
++#define SPIFIFOSTAT_RXFULL		BIT(16)
++#define SPIFIFOSTAT_FIFO_MASK		0xff
++#define SPIFIFOSTAT_TX_OFFSET		8
++#define SPIFIFOSTAT_RX_OFFSET		0
++
++#define SPI_FIFO_DEPTH			16
++
++/* SPIMODE register bit field */
++#define SPIMODE_MODE_OFFSET		24
++#define SPIMODE_DUMMY_OFFSET		0
++
++/* SPIARB register bit field */
++#define SPICTL_ARB_EN			BIT(31)
++#define SPICTL_CSCTL1			BIT(16)
++#define SPI1_POR			BIT(1)
++#define SPI0_POR			BIT(0)
++
++#define RT2880_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | \
++		SPI_CS_HIGH)
++
++static atomic_t hw_reset_count = ATOMIC_INIT(0);
++
++struct rt2880_spi {
++	struct spi_master	*master;
++	void __iomem		*base;
++	u32			speed;
++	u16			wait_loops;
++	u16			mode;
++	struct clk		*clk;
++};
++
++static inline struct rt2880_spi *spidev_to_rt2880_spi(struct spi_device *spi)
++{
++	return spi_master_get_devdata(spi->master);
++}
++
++static inline u32 rt2880_spi_read(struct rt2880_spi *rs, u32 reg)
++{
++	return ioread32(rs->base + reg);
++}
++
++static inline void rt2880_spi_write(struct rt2880_spi *rs, u32 reg,
++		const u32 val)
++{
++	iowrite32(val, rs->base + reg);
++}
++
++static inline void rt2880_spi_setbits(struct rt2880_spi *rs, u32 reg, u32 mask)
++{
++	void __iomem *addr = rs->base + reg;
++
++	iowrite32((ioread32(addr) | mask), addr);
++}
++
++static inline void rt2880_spi_clrbits(struct rt2880_spi *rs, u32 reg, u32 mask)
++{
++	void __iomem *addr = rs->base + reg;
++
++	iowrite32((ioread32(addr) & ~mask), addr);
++}
++
++static u32 rt2880_spi_baudrate_get(struct spi_device *spi, unsigned int speed)
++{
++	struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
++	u32 rate;
++	u32 prescale;
++
++	/*
++	 * the supported rates are: 2, 4, 8, ... 128
++	 * round up as we look for equal or less speed
++	 */
++	rate = DIV_ROUND_UP(clk_get_rate(rs->clk), speed);
++	rate = roundup_pow_of_two(rate);
++
++	/* Convert the rate to SPI clock divisor value.	*/
++	prescale = ilog2(rate / 2);
++
++	/* some tolerance. double and add 100 */
++	rs->wait_loops = (8 * HZ * loops_per_jiffy) /
++		(clk_get_rate(rs->clk) / rate);
++	rs->wait_loops = (rs->wait_loops << 1) + 100;
++	rs->speed = speed;
++
++	dev_dbg(&spi->dev, "speed: %lu/%u, rate: %u, prescal: %u, loops: %hu\n",
++			clk_get_rate(rs->clk) / rate, speed, rate, prescale,
++			rs->wait_loops);
++
++	return prescale;
++}
++
++static u32 get_arbiter_offset(struct spi_master *master)
++{
++	u32 offset;
++
++	offset = RAMIPS_SPI_ARBITER;
++	if (master->bus_num == 1)
++		offset -= RAMIPS_SPI_DEV_OFFSET;
++
++	return offset;
++}
++
++static void rt2880_spi_set_cs(struct spi_device *spi, bool enable)
++{
++	struct rt2880_spi *rs = spidev_to_rt2880_spi(spi);
++
++	if (enable)
++		rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA);
++	else
++		rt2880_spi_clrbits(rs, RAMIPS_SPI_CTL, SPICTL_SPIENA);
++}
++
++static int rt2880_spi_wait_ready(struct rt2880_spi *rs, int len)
++{
++	int loop = rs->wait_loops * len;
++
++	while ((rt2880_spi_read(rs, RAMIPS_SPI_STAT) & SPISTAT_BUSY) && --loop)
++		cpu_relax();
++
++	if (loop)
++		return 0;
++
++	return -ETIMEDOUT;
++}
++
++static void rt2880_dump_reg(struct spi_master *master)
++{
++	struct rt2880_spi *rs = spi_master_get_devdata(master);
++
++	dev_dbg(&master->dev, "stat: %08x, cfg: %08x, ctl: %08x, " \
++			"data: %08x, arb: %08x\n",
++			rt2880_spi_read(rs, RAMIPS_SPI_STAT),
++			rt2880_spi_read(rs, RAMIPS_SPI_CFG),
++			rt2880_spi_read(rs, RAMIPS_SPI_CTL),
++			rt2880_spi_read(rs, RAMIPS_SPI_DATA),
++			rt2880_spi_read(rs, get_arbiter_offset(master)));
++}
++
++static int rt2880_spi_transfer_one(struct spi_master *master,
++		struct spi_device *spi, struct spi_transfer *xfer)
++{
++	struct rt2880_spi *rs = spi_master_get_devdata(master);
++	unsigned len;
++	const u8 *tx = xfer->tx_buf;
++	u8 *rx = xfer->rx_buf;
++	int err = 0;
++
++	/* change clock speed  */
++	if (unlikely(rs->speed != xfer->speed_hz)) {
++		u32 reg;
++		reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG);
++		reg &= ~SPICFG_SPICLK_PRESCALE_MASK;
++		reg |= rt2880_spi_baudrate_get(spi, xfer->speed_hz);
++		rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg);
++	}
++
++	if (tx) {
++		len = xfer->len;
++		while (len-- > 0) {
++			rt2880_spi_write(rs, RAMIPS_SPI_DATA, *tx++);
++			rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTWR);
++			err = rt2880_spi_wait_ready(rs, 1);
++			if (err) {
++				dev_err(&spi->dev, "TX failed, err=%d\n", err);
++				goto out;
++			}
++		}
++	}
++
++	if (rx) {
++		len = xfer->len;
++		while (len-- > 0) {
++			rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_STARTRD);
++			err = rt2880_spi_wait_ready(rs, 1);
++			if (err) {
++				dev_err(&spi->dev, "RX failed, err=%d\n", err);
++				goto out;
++			}
++			*rx++ = (u8) rt2880_spi_read(rs, RAMIPS_SPI_DATA);
++		}
++	}
++
++out:
++	return err;
++}
++
++/* copy from spi.c */
++static void spi_set_cs(struct spi_device *spi, bool enable)
++{
++	if (spi->mode & SPI_CS_HIGH)
++		enable = !enable;
++
++	if (spi->cs_gpio >= 0)
++		gpio_set_value(spi->cs_gpio, !enable);
++	else if (spi->master->set_cs)
++		spi->master->set_cs(spi, !enable);
++}
++
++static int rt2880_spi_setup(struct spi_device *spi)
++{
++	struct spi_master *master = spi->master;
++	struct rt2880_spi *rs = spi_master_get_devdata(master);
++	u32 reg, old_reg, arbit_off;
++
++	if ((spi->max_speed_hz > master->max_speed_hz) ||
++			(spi->max_speed_hz < master->min_speed_hz)) {
++		dev_err(&spi->dev, "invalide requested speed %d Hz\n",
++				spi->max_speed_hz);
++		return -EINVAL;
++	}
++
++	if (!(master->bits_per_word_mask &
++				BIT(spi->bits_per_word - 1))) {
++		dev_err(&spi->dev, "invalide bits_per_word %d\n",
++				spi->bits_per_word);
++		return -EINVAL;
++	}
++
++	/* the hardware seems can't work on mode0 force it to mode3 */
++	if ((spi->mode & (SPI_CPOL | SPI_CPHA)) == SPI_MODE_0) {
++		dev_warn(&spi->dev, "force spi mode3\n");
++		spi->mode |= SPI_MODE_3;
++	}
++
++	/* chip polarity */
++	arbit_off = get_arbiter_offset(master);
++	reg = old_reg = rt2880_spi_read(rs, arbit_off);
++	if (spi->mode & SPI_CS_HIGH) {
++		switch (master->bus_num) {
++		case 1:
++			reg |= SPI1_POR;
++			break;
++		default:
++			reg |= SPI0_POR;
++			break;
++		}
++	} else {
++		switch (master->bus_num) {
++		case 1:
++			reg &= ~SPI1_POR;
++			break;
++		default:
++			reg &= ~SPI0_POR;
++			break;
++		}
++	}
++
++	/* enable spi1 */
++	if (master->bus_num == 1)
++		reg |= SPICTL_ARB_EN;
++
++	if (reg != old_reg)
++		rt2880_spi_write(rs, arbit_off, reg);
++
++	/* deselected the spi device */
++	spi_set_cs(spi, false);
++
++	rt2880_dump_reg(master);
++
++	return 0;
++}
++
++static int rt2880_spi_prepare_message(struct spi_master *master,
++		struct spi_message *msg)
++{
++	struct rt2880_spi *rs = spi_master_get_devdata(master);
++	struct spi_device *spi = msg->spi;
++	u32 reg;
++
++	if ((rs->mode == spi->mode) && (rs->speed == spi->max_speed_hz))
++		return 0;
++
++#if 0
++	/* set spido to tri-state */
++	rt2880_spi_setbits(rs, RAMIPS_SPI_CTL, SPICTL_HIZSDO);
++#endif
++
++	reg = rt2880_spi_read(rs, RAMIPS_SPI_CFG);
++
++	reg &= ~(SPICFG_MSBFIRST | SPICFG_SPICLKPOL |
++			SPICFG_RXCLKEDGE_FALLING |
++			SPICFG_TXCLKEDGE_FALLING |
++			SPICFG_SPICLK_PRESCALE_MASK);
++
++	/* MSB */
++	if (!(spi->mode & SPI_LSB_FIRST))
++		reg |= SPICFG_MSBFIRST;
++
++	/* spi mode */
++	switch (spi->mode & (SPI_CPOL | SPI_CPHA)) {
++	case SPI_MODE_0:
++		reg |= SPICFG_TXCLKEDGE_FALLING;
++		break;
++	case SPI_MODE_1:
++		reg |= SPICFG_RXCLKEDGE_FALLING;
++		break;
++	case SPI_MODE_2:
++		reg |= SPICFG_SPICLKPOL | SPICFG_RXCLKEDGE_FALLING;
++		break;
++	case SPI_MODE_3:
++		reg |= SPICFG_SPICLKPOL | SPICFG_TXCLKEDGE_FALLING;
++		break;
++	}
++	rs->mode = spi->mode;
++
++#if 0
++	/* set spiclk and spiena to tri-state */
++	reg |= SPICFG_HIZSPI;
++#endif
++
++	/* clock divide */
++	reg |= rt2880_spi_baudrate_get(spi, spi->max_speed_hz);
++
++	rt2880_spi_write(rs, RAMIPS_SPI_CFG, reg);
++
++	return 0;
++}
++
++static int rt2880_spi_probe(struct platform_device *pdev)
++{
++	struct spi_master *master;
++	struct rt2880_spi *rs;
++	void __iomem *base;
++	struct resource *r;
++	struct clk *clk;
++	int ret;
++
++	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	base = devm_ioremap_resource(&pdev->dev, r);
++	if (IS_ERR(base))
++		return PTR_ERR(base);
++
++	clk = devm_clk_get(&pdev->dev, NULL);
++	if (IS_ERR(clk)) {
++		dev_err(&pdev->dev, "unable to get SYS clock\n");
++		return PTR_ERR(clk);
++	}
++
++	ret = clk_prepare_enable(clk);
++	if (ret)
++		goto err_clk;
++
++	master = spi_alloc_master(&pdev->dev, sizeof(*rs));
++	if (master == NULL) {
++		dev_dbg(&pdev->dev, "master allocation failed\n");
++		ret = -ENOMEM;
++		goto err_clk;
++	}
++
++	master->dev.of_node = pdev->dev.of_node;
++	master->mode_bits = RT2880_SPI_MODE_BITS;
++	master->bits_per_word_mask = SPI_BPW_MASK(8);
++	master->min_speed_hz = clk_get_rate(clk) / 128;
++	master->max_speed_hz = clk_get_rate(clk) / 2;
++	master->flags = SPI_MASTER_HALF_DUPLEX;
++	master->setup = rt2880_spi_setup;
++	master->prepare_message = rt2880_spi_prepare_message;
++	master->set_cs = rt2880_spi_set_cs;
++	master->transfer_one = rt2880_spi_transfer_one,
++
++	dev_set_drvdata(&pdev->dev, master);
++
++	rs = spi_master_get_devdata(master);
++	rs->master = master;
++	rs->base = base;
++	rs->clk = clk;
++
++	if (atomic_inc_return(&hw_reset_count) == 1)
++		device_reset(&pdev->dev);
++
++	ret = devm_spi_register_master(&pdev->dev, master);
++	if (ret < 0) {
++		dev_err(&pdev->dev, "devm_spi_register_master error.\n");
++		goto err_master;
++	}
++
++	return ret;
++
++err_master:
++	spi_master_put(master);
++	kfree(master);
++err_clk:
++	clk_disable_unprepare(clk);
++
++	return ret;
++}
++
++static int rt2880_spi_remove(struct platform_device *pdev)
++{
++	struct spi_master *master;
++	struct rt2880_spi *rs;
++
++	master = dev_get_drvdata(&pdev->dev);
++	rs = spi_master_get_devdata(master);
++
++	clk_disable_unprepare(rs->clk);
++	atomic_dec(&hw_reset_count);
++
++	return 0;
++}
++
++MODULE_ALIAS("platform:" DRIVER_NAME);
++
++static const struct of_device_id rt2880_spi_match[] = {
++	{ .compatible = "ralink,rt2880-spi" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, rt2880_spi_match);
++
++static struct platform_driver rt2880_spi_driver = {
++	.driver = {
++		.name = DRIVER_NAME,
++		.owner = THIS_MODULE,
++		.of_match_table = rt2880_spi_match,
++	},
++	.probe = rt2880_spi_probe,
++	.remove = rt2880_spi_remove,
++};
++
++module_platform_driver(rt2880_spi_driver);
++
++MODULE_DESCRIPTION("Ralink SPI driver");
++MODULE_AUTHOR("Sergiy <[email protected]>");
++MODULE_AUTHOR("Gabor Juhos <[email protected]>");
++MODULE_LICENSE("GPL");

target/linux/ramips/patches-4.4/0043-spi-add-mt7621-support.patch

@@ -0,0 +1,521 @@
+From 87a5fcd57c577cd94b5b080deb98885077c13a42 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:49:07 +0100
+Subject: [PATCH 43/53] spi: add mt7621 support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/spi/Kconfig      |    6 +
+ drivers/spi/Makefile     |    1 +
+ drivers/spi/spi-mt7621.c |  480 ++++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 487 insertions(+)
+ create mode 100644 drivers/spi/spi-mt7621.c
+
+--- a/drivers/spi/Kconfig
++++ b/drivers/spi/Kconfig
+@@ -483,6 +483,12 @@ config SPI_RT2880
+ 	help
+ 	  This selects a driver for the Ralink RT288x/RT305x SPI Controller.
+ 
++config SPI_MT7621
++	tristate "MediaTek MT7621 SPI Controller"
++	depends on RALINK
++	help
++	  This selects a driver for the MediaTek MT7621 SPI Controller.
++
+ config SPI_S3C24XX
+ 	tristate "Samsung S3C24XX series SPI"
+ 	depends on ARCH_S3C24XX
+--- a/drivers/spi/Makefile
++++ b/drivers/spi/Makefile
+@@ -51,6 +51,7 @@ obj-$(CONFIG_SPI_MPC512x_PSC)		+= spi-mp
+ obj-$(CONFIG_SPI_MPC52xx_PSC)		+= spi-mpc52xx-psc.o
+ obj-$(CONFIG_SPI_MPC52xx)		+= spi-mpc52xx.o
+ obj-$(CONFIG_SPI_MT65XX)                += spi-mt65xx.o
++obj-$(CONFIG_SPI_MT7621)		+= spi-mt7621.o
+ obj-$(CONFIG_SPI_MXS)			+= spi-mxs.o
+ obj-$(CONFIG_SPI_NUC900)		+= spi-nuc900.o
+ obj-$(CONFIG_SPI_OC_TINY)		+= spi-oc-tiny.o
+--- /dev/null
++++ b/drivers/spi/spi-mt7621.c
+@@ -0,0 +1,480 @@
++/*
++ * spi-mt7621.c -- MediaTek MT7621 SPI controller driver
++ *
++ * Copyright (C) 2011 Sergiy <[email protected]>
++ * Copyright (C) 2011-2013 Gabor Juhos <[email protected]>
++ * Copyright (C) 2014-2015 Felix Fietkau <[email protected]>
++ *
++ * Some parts are based on spi-orion.c:
++ *   Author: Shadi Ammouri <[email protected]>
++ *   Copyright (C) 2007-2008 Marvell Ltd.
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/clk.h>
++#include <linux/err.h>
++#include <linux/delay.h>
++#include <linux/io.h>
++#include <linux/reset.h>
++#include <linux/spi/spi.h>
++#include <linux/of_device.h>
++#include <linux/platform_device.h>
++#include <linux/swab.h>
++
++#include <ralink_regs.h>
++
++#define SPI_BPW_MASK(bits) BIT((bits) - 1)
++
++#define DRIVER_NAME			"spi-mt7621"
++/* in usec */
++#define RALINK_SPI_WAIT_MAX_LOOP	2000
++
++/* SPISTAT register bit field */
++#define SPISTAT_BUSY			BIT(0)
++
++#define MT7621_SPI_TRANS	0x00
++#define SPITRANS_BUSY		BIT(16)
++
++#define MT7621_SPI_OPCODE	0x04
++#define MT7621_SPI_DATA0	0x08
++#define MT7621_SPI_DATA4	0x18
++#define SPI_CTL_TX_RX_CNT_MASK	0xff
++#define SPI_CTL_START		BIT(8)
++
++#define MT7621_SPI_POLAR	0x38
++#define MT7621_SPI_MASTER	0x28
++#define MT7621_SPI_MOREBUF	0x2c
++#define MT7621_SPI_SPACE	0x3c
++
++#define MT7621_CPHA		BIT(5)
++#define MT7621_CPOL		BIT(4)
++#define MT7621_LSB_FIRST	BIT(3)
++
++#define RT2880_SPI_MODE_BITS	(SPI_CPOL | SPI_CPHA | SPI_LSB_FIRST | SPI_CS_HIGH)
++
++struct mt7621_spi;
++
++struct mt7621_spi {
++	struct spi_master	*master;
++	void __iomem		*base;
++	unsigned int		sys_freq;
++	unsigned int		speed;
++	struct clk		*clk;
++	spinlock_t		lock;
++
++	struct mt7621_spi_ops	*ops;
++};
++
++static inline struct mt7621_spi *spidev_to_mt7621_spi(struct spi_device *spi)
++{
++	return spi_master_get_devdata(spi->master);
++}
++
++static inline u32 mt7621_spi_read(struct mt7621_spi *rs, u32 reg)
++{
++	return ioread32(rs->base + reg);
++}
++
++static inline void mt7621_spi_write(struct mt7621_spi *rs, u32 reg, u32 val)
++{
++	iowrite32(val, rs->base + reg);
++}
++
++static void mt7621_spi_reset(struct mt7621_spi *rs, int duplex)
++{
++	u32 master = mt7621_spi_read(rs, MT7621_SPI_MASTER);
++
++	master |= 7 << 29;
++	master |= 1 << 2;
++	if (duplex)
++		master |= 1 << 10;
++	else
++		master &= ~(1 << 10);
++
++	mt7621_spi_write(rs, MT7621_SPI_MASTER, master);
++}
++
++static void mt7621_spi_set_cs(struct spi_device *spi, int enable)
++{
++	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++	int cs = spi->chip_select;
++	u32 polar = 0;
++
++        mt7621_spi_reset(rs, cs);
++	if (enable)
++		polar = BIT(cs);
++	mt7621_spi_write(rs, MT7621_SPI_POLAR, polar);
++}
++
++static int mt7621_spi_prepare(struct spi_device *spi, unsigned int speed)
++{
++	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++	u32 rate;
++	u32 reg;
++
++	dev_dbg(&spi->dev, "speed:%u\n", speed);
++
++	rate = DIV_ROUND_UP(rs->sys_freq, speed);
++	dev_dbg(&spi->dev, "rate-1:%u\n", rate);
++
++	if (rate > 4097)
++		return -EINVAL;
++
++	if (rate < 2)
++		rate = 2;
++
++	reg = mt7621_spi_read(rs, MT7621_SPI_MASTER);
++	reg &= ~(0xfff << 16);
++	reg |= (rate - 2) << 16;
++	rs->speed = speed;
++
++	reg &= ~MT7621_LSB_FIRST;
++	if (spi->mode & SPI_LSB_FIRST)
++		reg |= MT7621_LSB_FIRST;
++
++	reg &= ~(MT7621_CPHA | MT7621_CPOL);
++	switch(spi->mode & (SPI_CPOL | SPI_CPHA)) {
++		case SPI_MODE_0:
++			break;
++		case SPI_MODE_1:
++			reg |= MT7621_CPHA;
++			break;
++		case SPI_MODE_2:
++			reg |= MT7621_CPOL;
++			break;
++		case SPI_MODE_3:
++			reg |= MT7621_CPOL | MT7621_CPHA;
++			break;
++	}
++	mt7621_spi_write(rs, MT7621_SPI_MASTER, reg);
++
++	return 0;
++}
++
++static inline int mt7621_spi_wait_till_ready(struct spi_device *spi)
++{
++	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++	int i;
++
++	for (i = 0; i < RALINK_SPI_WAIT_MAX_LOOP; i++) {
++		u32 status;
++
++		status = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++		if ((status & SPITRANS_BUSY) == 0) {
++			return 0;
++		}
++		cpu_relax();
++		udelay(1);
++	}
++
++	return -ETIMEDOUT;
++}
++
++static int mt7621_spi_transfer_half_duplex(struct spi_master *master,
++					   struct spi_message *m)
++{
++	struct mt7621_spi *rs = spi_master_get_devdata(master);
++	struct spi_device *spi = m->spi;
++	unsigned int speed = spi->max_speed_hz;
++	struct spi_transfer *t = NULL;
++	int status = 0;
++	int i, len = 0;
++	int rx_len = 0;
++	u32 data[9] = { 0 };
++	u32 val;
++
++	mt7621_spi_wait_till_ready(spi);
++
++	list_for_each_entry(t, &m->transfers, transfer_list) {
++		const u8 *buf = t->tx_buf;
++
++		if (t->rx_buf)
++			rx_len += t->len;
++
++		if (!buf)
++			continue;
++
++		if (WARN_ON(len + t->len > 36)) {
++			status = -EIO;
++			goto msg_done;
++		}
++
++		for (i = 0; i < t->len; i++, len++)
++			data[len / 4] |= buf[i] << (8 * (len & 3));
++	}
++
++	if (WARN_ON(rx_len > 32)) {
++		status = -EIO;
++		goto msg_done;
++	}
++
++	if (mt7621_spi_prepare(spi, speed)) {
++		status = -EIO;
++		goto msg_done;
++	}
++	data[0] = swab32(data[0]);
++	if (len < 4)
++		data[0] >>= (4 - len) * 8;
++
++	for (i = 0; i < len; i += 4)
++		mt7621_spi_write(rs, MT7621_SPI_OPCODE + i, data[i / 4]);
++
++	val = (min_t(int, len, 4) * 8) << 24;
++	if (len > 4)
++		val |= (len - 4) * 8;
++	val |= (rx_len * 8) << 12;
++	mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
++
++	mt7621_spi_set_cs(spi, 1);
++
++	val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++	val |= SPI_CTL_START;
++	mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
++
++	mt7621_spi_wait_till_ready(spi);
++
++	mt7621_spi_set_cs(spi, 0);
++
++	for (i = 0; i < rx_len; i += 4)
++		data[i / 4] = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);
++
++	m->actual_length = len + rx_len;
++
++	len = 0;
++	list_for_each_entry(t, &m->transfers, transfer_list) {
++		u8 *buf = t->rx_buf;
++
++		if (!buf)
++			continue;
++
++		for (i = 0; i < t->len; i++, len++)
++			buf[i] = data[len / 4] >> (8 * (len & 3));
++	}
++
++msg_done:
++	m->status = status;
++	spi_finalize_current_message(master);
++
++	return 0;
++}
++
++static int mt7621_spi_transfer_full_duplex(struct spi_master *master,
++					   struct spi_message *m)
++{
++	struct mt7621_spi *rs = spi_master_get_devdata(master);
++	struct spi_device *spi = m->spi;
++	unsigned int speed = spi->max_speed_hz;
++	struct spi_transfer *t = NULL;
++	int status = 0;
++	int i, len = 0;
++	int rx_len = 0;
++	u32 data[9] = { 0 };
++	u32 val = 0;
++
++	mt7621_spi_wait_till_ready(spi);
++
++	list_for_each_entry(t, &m->transfers, transfer_list) {
++		const u8 *buf = t->tx_buf;
++
++		if (t->rx_buf)
++			rx_len += t->len;
++
++		if (!buf)
++			continue;
++
++		if (WARN_ON(len + t->len > 16)) {
++			status = -EIO;
++			goto msg_done;
++		}
++
++		for (i = 0; i < t->len; i++, len++)
++			data[len / 4] |= buf[i] << (8 * (len & 3));
++		if (speed > t->speed_hz)
++			speed = t->speed_hz;
++	}
++
++	if (WARN_ON(rx_len > 16)) {
++		status = -EIO;
++		goto msg_done;
++	}
++
++	if (mt7621_spi_prepare(spi, speed)) {
++		status = -EIO;
++		goto msg_done;
++	}
++
++	for (i = 0; i < len; i += 4)
++		mt7621_spi_write(rs, MT7621_SPI_DATA0 + i, data[i / 4]);
++
++	val |= len * 8;
++	val |= (rx_len * 8) << 12;
++	mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);
++
++	mt7621_spi_set_cs(spi, 1);
++
++	val = mt7621_spi_read(rs, MT7621_SPI_TRANS);
++	val |= SPI_CTL_START;
++	mt7621_spi_write(rs, MT7621_SPI_TRANS, val);
++
++	mt7621_spi_wait_till_ready(spi);
++
++	mt7621_spi_set_cs(spi, 0);
++
++	for (i = 0; i < rx_len; i += 4)
++		data[i / 4] = mt7621_spi_read(rs, MT7621_SPI_DATA4 + i);
++
++	m->actual_length = rx_len;
++
++	len = 0;
++	list_for_each_entry(t, &m->transfers, transfer_list) {
++		u8 *buf = t->rx_buf;
++
++		if (!buf)
++			continue;
++
++		for (i = 0; i < t->len; i++, len++)
++			buf[i] = data[len / 4] >> (8 * (len & 3));
++	}
++
++msg_done:
++	m->status = status;
++	spi_finalize_current_message(master);
++
++	return 0;
++}
++
++static int mt7621_spi_transfer_one_message(struct spi_master *master,
++					   struct spi_message *m)
++{
++	struct spi_device *spi = m->spi;
++	int cs = spi->chip_select;
++
++	if (cs)
++		return mt7621_spi_transfer_full_duplex(master, m);
++	return mt7621_spi_transfer_half_duplex(master, m);
++}
++
++static int mt7621_spi_setup(struct spi_device *spi)
++{
++	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);
++
++	if ((spi->max_speed_hz == 0) ||
++		(spi->max_speed_hz > (rs->sys_freq / 2)))
++		spi->max_speed_hz = (rs->sys_freq / 2);
++
++	if (spi->max_speed_hz < (rs->sys_freq / 4097)) {
++		dev_err(&spi->dev, "setup: requested speed is too low %d Hz\n",
++			spi->max_speed_hz);
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static const struct of_device_id mt7621_spi_match[] = {
++	{ .compatible = "ralink,mt7621-spi" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7621_spi_match);
++
++static int mt7621_spi_probe(struct platform_device *pdev)
++{
++	const struct of_device_id *match;
++	struct spi_master *master;
++	struct mt7621_spi *rs;
++	unsigned long flags;
++	void __iomem *base;
++	struct resource *r;
++	int status = 0;
++	struct clk *clk;
++	struct mt7621_spi_ops *ops;
++
++	match = of_match_device(mt7621_spi_match, &pdev->dev);
++	if (!match)
++		return -EINVAL;
++	ops = (struct mt7621_spi_ops *)match->data;
++
++	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	base = devm_ioremap_resource(&pdev->dev, r);
++	if (IS_ERR(base))
++		return PTR_ERR(base);
++
++	clk = devm_clk_get(&pdev->dev, NULL);
++	if (IS_ERR(clk)) {
++		dev_err(&pdev->dev, "unable to get SYS clock, err=%d\n",
++			status);
++		return PTR_ERR(clk);
++	}
++
++	status = clk_prepare_enable(clk);
++	if (status)
++		return status;
++
++	master = spi_alloc_master(&pdev->dev, sizeof(*rs));
++	if (master == NULL) {
++		dev_info(&pdev->dev, "master allocation failed\n");
++		return -ENOMEM;
++	}
++
++	master->mode_bits = RT2880_SPI_MODE_BITS;
++
++	master->setup = mt7621_spi_setup;
++	master->transfer_one_message = mt7621_spi_transfer_one_message;
++	master->bits_per_word_mask = SPI_BPW_MASK(8);
++	master->dev.of_node = pdev->dev.of_node;
++	master->num_chipselect = 2;
++
++	dev_set_drvdata(&pdev->dev, master);
++
++	rs = spi_master_get_devdata(master);
++	rs->base = base;
++	rs->clk = clk;
++	rs->master = master;
++	rs->sys_freq = clk_get_rate(rs->clk);
++	rs->ops = ops;
++	dev_info(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);
++	spin_lock_irqsave(&rs->lock, flags);
++
++	device_reset(&pdev->dev);
++
++	mt7621_spi_reset(rs, 0);
++
++	return spi_register_master(master);
++}
++
++static int mt7621_spi_remove(struct platform_device *pdev)
++{
++	struct spi_master *master;
++	struct mt7621_spi *rs;
++
++	master = dev_get_drvdata(&pdev->dev);
++	rs = spi_master_get_devdata(master);
++
++	clk_disable(rs->clk);
++	spi_unregister_master(master);
++
++	return 0;
++}
++
++MODULE_ALIAS("platform:" DRIVER_NAME);
++
++static struct platform_driver mt7621_spi_driver = {
++	.driver = {
++		.name = DRIVER_NAME,
++		.owner = THIS_MODULE,
++		.of_match_table = mt7621_spi_match,
++	},
++	.probe = mt7621_spi_probe,
++	.remove = mt7621_spi_remove,
++};
++
++module_platform_driver(mt7621_spi_driver);
++
++MODULE_DESCRIPTION("MT7621 SPI driver");
++MODULE_AUTHOR("Felix Fietkau <[email protected]>");
++MODULE_LICENSE("GPL");

target/linux/ramips/patches-4.4/0044-i2c-MIPS-adds-ralink-I2C-driver.patch

@@ -0,0 +1,398 @@
+From 723b8beaabf3c3c4b1ce69480141f1e926f3f3b2 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:52:56 +0100
+Subject: [PATCH 44/53] i2c: MIPS: adds ralink I2C driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ .../devicetree/bindings/i2c/i2c-ralink.txt         |   27 ++
+ drivers/i2c/busses/Kconfig                         |    4 +
+ drivers/i2c/busses/Makefile                        |    1 +
+ drivers/i2c/busses/i2c-ralink.c                    |  327 ++++++++++++++++++++
+ 4 files changed, 359 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/i2c/i2c-ralink.txt
+ create mode 100644 drivers/i2c/busses/i2c-ralink.c
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/i2c/i2c-ralink.txt
+@@ -0,0 +1,27 @@
++I2C for Ralink platforms
++
++Required properties :
++- compatible : Must be "link,rt3052-i2c"
++- reg: physical base address of the controller and length of memory mapped
++     region.
++- #address-cells = <1>;
++- #size-cells = <0>;
++
++Optional properties:
++- Child nodes conforming to i2c bus binding
++
++Example :
++
++palmbus@10000000 {
++	i2c@900 {
++		compatible = "link,rt3052-i2c";
++		reg = <0x900 0x100>;
++		#address-cells = <1>;
++		#size-cells = <0>;
++
++		hwmon@4b {
++			compatible = "national,lm92";
++			reg = <0x4b>;
++		};
++	};
++};
+--- a/drivers/i2c/busses/Kconfig
++++ b/drivers/i2c/busses/Kconfig
+@@ -806,6 +806,10 @@ config I2C_RK3X
+ 	  This driver can also be built as a module. If so, the module will
+ 	  be called i2c-rk3x.
+ 
++config I2C_RALINK
++	tristate "Ralink I2C Controller"
++	select OF_I2C
++
+ config HAVE_S3C2410_I2C
+ 	bool
+ 	help
+--- a/drivers/i2c/busses/Makefile
++++ b/drivers/i2c/busses/Makefile
+@@ -75,6 +75,7 @@ obj-$(CONFIG_I2C_PNX)		+= i2c-pnx.o
+ obj-$(CONFIG_I2C_PUV3)		+= i2c-puv3.o
+ obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
+ obj-$(CONFIG_I2C_PXA_PCI)	+= i2c-pxa-pci.o
++obj-$(CONFIG_I2C_RALINK)	+= i2c-ralink.o
+ obj-$(CONFIG_I2C_QUP)		+= i2c-qup.o
+ obj-$(CONFIG_I2C_RIIC)		+= i2c-riic.o
+ obj-$(CONFIG_I2C_RK3X)		+= i2c-rk3x.o
+--- /dev/null
++++ b/drivers/i2c/busses/i2c-ralink.c
+@@ -0,0 +1,327 @@
++/*
++ * drivers/i2c/busses/i2c-ralink.c
++ *
++ * Copyright (C) 2013 Steven Liu <[email protected]>
++ *
++ * Improve driver for i2cdetect from i2c-tools to detect i2c devices on the bus.
++ * (C) 2014 Sittisak <[email protected]>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/reset.h>
++#include <linux/delay.h>
++#include <linux/slab.h>
++#include <linux/init.h>
++#include <linux/errno.h>
++#include <linux/platform_device.h>
++#include <linux/of_platform.h>
++#include <linux/i2c.h>
++#include <linux/io.h>
++#include <linux/err.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define REG_CONFIG_REG		0x00
++#define REG_CLKDIV_REG		0x04
++#define REG_DEVADDR_REG		0x08
++#define REG_ADDR_REG		0x0C
++#define REG_DATAOUT_REG		0x10
++#define REG_DATAIN_REG		0x14
++#define REG_STATUS_REG		0x18
++#define REG_STARTXFR_REG	0x1C
++#define REG_BYTECNT_REG		0x20
++#define REG_SM0CFG2		0x28
++#define REG_SM0CTL0		0x40
++
++#define I2C_STARTERR		BIT(4)
++#define I2C_ACKERR		BIT(3)
++#define I2C_DATARDY		BIT(2)
++#define I2C_SDOEMPTY		BIT(1)
++#define I2C_BUSY		BIT(0)
++
++#define I2C_DEVADLEN_7		(6 << 2)
++#define I2C_ADDRDIS		BIT(1)
++
++#define CLKDIV_VALUE		200 // clock rate is 40M, 40M / (200*2) = 100k (standard i2c bus rate).
++//#define CLKDIV_VALUE		50 // clock rate is 40M, 40M / (50*2) = 400k (fast i2c bus rate).
++
++#define READ_CMD		0x01
++#define WRITE_CMD		0x00
++#define READ_BLOCK              64
++
++#define SM0CTL0_OD		BIT(31)
++#define SM0CTL0_VTRIG		BIT(28)
++#define SM0CTL0_OUTHI		BIT(6)
++#define SM0CTL0_STRETCH		BIT(1)
++#define SM0CTL0_DEFAULT		(SM0CTL0_OD | SM0CTL0_VTRIG | SM0CTL0_OUTHI | SM0CTL0_STRETCH)
++
++/* timeout waiting for I2C devices to respond (clock streching) */
++#define RT_I2C_TIMEOUT (msecs_to_jiffies(1000))
++
++enum {
++	I2C_TYPE_RALINK,
++	I2C_TYPE_MEDIATEK,
++};
++
++static void __iomem *membase;
++static struct i2c_adapter *adapter;
++static int hw_type;
++
++static void rt_i2c_w32(u32 val, unsigned reg)
++{
++	iowrite32(val, membase + reg);
++}
++
++static u32 rt_i2c_r32(unsigned reg)
++{
++	return ioread32(membase + reg);
++}
++
++static inline int rt_i2c_get_ack(void)
++{
++        return (rt_i2c_r32(REG_STATUS_REG) & I2C_ACKERR) ? -EIO : 0;
++}
++
++static inline int rt_i2c_wait_rx_done(void)
++{
++	unsigned long timeout;
++
++	timeout = jiffies + RT_I2C_TIMEOUT;
++
++	do {
++		if (time_after(jiffies, timeout))
++			return (-ETIMEDOUT);
++
++	} while (!(rt_i2c_r32(REG_STATUS_REG) & I2C_DATARDY));
++
++	return 0;
++}
++
++static inline int rt_i2c_wait_idle(void)
++{
++	unsigned long timeout;
++
++	timeout = jiffies + RT_I2C_TIMEOUT;
++
++	do {
++		if (time_after(jiffies, timeout)) {
++			printk("i2c-read line busy\n");
++			return 1;
++		}
++	} while (rt_i2c_r32(REG_STATUS_REG) & I2C_BUSY);
++
++	return 0;
++}
++
++static inline int rt_i2c_wait_tx_done(void)
++{
++	unsigned long timeout;
++
++	timeout = jiffies + RT_I2C_TIMEOUT;
++
++	do {
++		if (time_after(jiffies, timeout))
++			return (-ETIMEDOUT);
++
++	} while (!(rt_i2c_r32(REG_STATUS_REG) & I2C_SDOEMPTY));
++
++	return 0;
++}
++
++static int rt_i2c_handle_msg(struct i2c_adapter *a, struct i2c_msg* msg)
++{
++	int i = 0, j = 0, pos = 0;
++	int nblock = msg->len / READ_BLOCK;
++        int rem = msg->len % READ_BLOCK;
++	int ret = 0;
++
++	if (msg->flags & I2C_M_TEN) {
++		printk("10 bits addr not supported\n");
++		return -EINVAL;
++	}
++
++	if (msg->flags & I2C_M_RD) {
++		for (i = 0; i < nblock; i++) {
++	                if (rt_i2c_wait_idle())
++				return -ETIMEDOUT;
++			rt_i2c_w32(READ_BLOCK - 1, REG_BYTECNT_REG);
++			rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
++			for (j = 0; j < READ_BLOCK; j++) {
++				if (rt_i2c_wait_rx_done() < 0)
++					ret = rt_i2c_wait_rx_done();
++                                if (rt_i2c_get_ack() < 0)
++					ret = rt_i2c_get_ack();
++				msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
++			}
++		}
++
++		if (rt_i2c_wait_idle())
++			return -ETIMEDOUT;
++		if (rem) {
++			rt_i2c_w32(rem - 1, REG_BYTECNT_REG);
++			rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
++		}
++		for (i = 0; i < rem; i++) {
++			if (rt_i2c_wait_rx_done() < 0)
++				ret = rt_i2c_wait_rx_done();
++                        if (rt_i2c_get_ack() < 0)
++				ret = rt_i2c_get_ack();
++
++			msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
++		}
++	} else {
++		if (rt_i2c_wait_idle())
++			return -ETIMEDOUT;
++		rt_i2c_w32(msg->len - 1, REG_BYTECNT_REG);
++		for (i = 0; i < msg->len; i++) {
++			rt_i2c_w32(msg->buf[i], REG_DATAOUT_REG);
++			rt_i2c_w32(WRITE_CMD, REG_STARTXFR_REG);
++
++			if (rt_i2c_wait_tx_done() < 0)
++				ret = rt_i2c_wait_tx_done();
++                        if (rt_i2c_get_ack() < 0)
++				ret = rt_i2c_get_ack();
++		}
++	}
++
++	return ret;
++}
++
++static int rt_i2c_master_xfer(struct i2c_adapter *a, struct i2c_msg *m, int n)
++{
++	int i = 0;
++	int ret = 0;
++
++	if (rt_i2c_wait_idle())
++		return -ETIMEDOUT;
++
++	device_reset(a->dev.parent);
++
++	rt_i2c_w32(m->addr, REG_DEVADDR_REG);
++	rt_i2c_w32(I2C_DEVADLEN_7 | I2C_ADDRDIS, REG_CONFIG_REG);
++	if (hw_type == I2C_TYPE_RALINK) {
++		rt_i2c_w32(CLKDIV_VALUE, REG_CLKDIV_REG);
++	} else {
++		rt_i2c_w32((CLKDIV_VALUE << 16) | SM0CTL0_DEFAULT, REG_SM0CTL0);
++		rt_i2c_w32(1, REG_SM0CFG2);
++	}
++
++	for (i = 0; i < n && !ret; i++) {
++		ret = rt_i2c_handle_msg(a, &m[i]);
++
++		if (ret < 0) {
++			return ret;
++		}
++	}
++
++	return n;
++}
++
++static u32 rt_i2c_func(struct i2c_adapter *a)
++{
++	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
++}
++
++static const struct i2c_algorithm rt_i2c_algo = {
++	.master_xfer	= rt_i2c_master_xfer,
++	.functionality	= rt_i2c_func,
++};
++
++static const struct of_device_id i2c_rt_dt_ids[] = {
++	{ .compatible = "ralink,rt2880-i2c", .data = (void *) I2C_TYPE_RALINK },
++	{ .compatible = "mediatek,mt7628-i2c", .data = (void *) I2C_TYPE_MEDIATEK },
++	{ /* sentinel */ }
++};
++
++MODULE_DEVICE_TABLE(of, i2c_rt_dt_ids);
++
++static int rt_i2c_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	const struct of_device_id *match;
++	int ret;
++
++	match = of_match_device(i2c_rt_dt_ids, &pdev->dev);
++	hw_type = (int) match->data;
++
++	if (!res) {
++		dev_err(&pdev->dev, "no memory resource found\n");
++		return -ENODEV;
++	}
++
++	adapter = devm_kzalloc(&pdev->dev, sizeof(struct i2c_adapter), GFP_KERNEL);
++	if (!adapter) {
++		dev_err(&pdev->dev, "failed to allocate i2c_adapter\n");
++		return -ENOMEM;
++	}
++
++	membase = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(membase))
++		return PTR_ERR(membase);
++
++	strlcpy(adapter->name, dev_name(&pdev->dev), sizeof(adapter->name));
++	adapter->owner = THIS_MODULE;
++	adapter->nr = pdev->id;
++	adapter->timeout = HZ;
++	adapter->algo = &rt_i2c_algo;
++	adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
++	adapter->dev.parent = &pdev->dev;
++	adapter->dev.of_node = pdev->dev.of_node;
++
++	ret = i2c_add_numbered_adapter(adapter);
++	if (ret)
++		return ret;
++
++	platform_set_drvdata(pdev, adapter);
++
++	dev_info(&pdev->dev, "loaded\n");
++
++	return 0;
++}
++
++static int rt_i2c_remove(struct platform_device *pdev)
++{
++	platform_set_drvdata(pdev, NULL);
++
++	return 0;
++}
++
++static struct platform_driver rt_i2c_driver = {
++	.probe		= rt_i2c_probe,
++	.remove		= rt_i2c_remove,
++	.driver		= {
++		.owner	= THIS_MODULE,
++		.name	= "i2c-ralink",
++		.of_match_table = i2c_rt_dt_ids,
++	},
++};
++
++static int __init i2c_rt_init (void)
++{
++	return platform_driver_register(&rt_i2c_driver);
++}
++subsys_initcall(i2c_rt_init);
++
++static void __exit i2c_rt_exit (void)
++{
++	platform_driver_unregister(&rt_i2c_driver);
++}
++
++module_exit (i2c_rt_exit);
++
++MODULE_AUTHOR("Steven Liu <[email protected]>");
++MODULE_DESCRIPTION("Ralink I2c host driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:Ralink-I2C");

target/linux/ramips/patches-4.4/0045-i2c-add-mt7621-driver.patch

@@ -0,0 +1,342 @@
+From d5c54ff3d1db0a4348fa04d8e78f3bf6063e3afc Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:21:27 +0100
+Subject: [PATCH 45/53] i2c: add mt7621 driver
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/i2c/busses/Kconfig      |    4 +
+ drivers/i2c/busses/Makefile     |    1 +
+ drivers/i2c/busses/i2c-mt7621.c |  303 +++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 308 insertions(+)
+ create mode 100644 drivers/i2c/busses/i2c-mt7621.c
+
+--- a/drivers/i2c/busses/Kconfig
++++ b/drivers/i2c/busses/Kconfig
+@@ -810,6 +810,10 @@ config I2C_RALINK
+ 	tristate "Ralink I2C Controller"
+ 	select OF_I2C
+ 
++config I2C_MT7621
++	tristate "MT7621 I2C Controller"
++	select OF_I2C
++
+ config HAVE_S3C2410_I2C
+ 	bool
+ 	help
+--- a/drivers/i2c/busses/Makefile
++++ b/drivers/i2c/busses/Makefile
+@@ -76,6 +76,7 @@ obj-$(CONFIG_I2C_PUV3)		+= i2c-puv3.o
+ obj-$(CONFIG_I2C_PXA)		+= i2c-pxa.o
+ obj-$(CONFIG_I2C_PXA_PCI)	+= i2c-pxa-pci.o
+ obj-$(CONFIG_I2C_RALINK)	+= i2c-ralink.o
++obj-$(CONFIG_I2C_MT7621)	+= i2c-mt7621.o
+ obj-$(CONFIG_I2C_QUP)		+= i2c-qup.o
+ obj-$(CONFIG_I2C_RIIC)		+= i2c-riic.o
+ obj-$(CONFIG_I2C_RK3X)		+= i2c-rk3x.o
+--- /dev/null
++++ b/drivers/i2c/busses/i2c-mt7621.c
+@@ -0,0 +1,303 @@
++/*
++ * drivers/i2c/busses/i2c-mt7621.c
++ *
++ * Copyright (C) 2013 Steven Liu <[email protected]>
++ *
++ * Improve driver for i2cdetect from i2c-tools to detect i2c devices on the bus.
++ * (C) 2014 Sittisak <[email protected]>
++ *
++ * This software is licensed under the terms of the GNU General Public
++ * License version 2, as published by the Free Software Foundation, and
++ * may be copied, distributed, and modified under those terms.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ */
++
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/reset.h>
++#include <linux/delay.h>
++#include <linux/slab.h>
++#include <linux/init.h>
++#include <linux/errno.h>
++#include <linux/platform_device.h>
++#include <linux/i2c.h>
++#include <linux/io.h>
++#include <linux/err.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define REG_CONFIG_REG                       0x00
++#define REG_CLKDIV_REG                       0x04
++#define REG_DEVADDR_REG                      0x08
++#define REG_ADDR_REG                         0x0C
++#define REG_DATAOUT_REG                      0x10
++#define REG_DATAIN_REG                       0x14
++#define REG_STATUS_REG                       0x18
++#define REG_STARTXFR_REG                     0x1C
++#define REG_BYTECNT_REG                      0x20
++#define REG_SM0_IS_AUTOMODE                  0x28
++#define REG_SM0CTL0                          0x40
++
++
++#define I2C_STARTERR                         0x10
++#define I2C_ACKERR                           0x08
++#define I2C_DATARDY                          0x04
++#define I2C_SDOEMPTY                         0x02
++#define I2C_BUSY                             0x01
++
++/* I2C_CFG register bit field */
++#define I2C_CFG_ADDRLEN_8                    (7<<5)	/* 8 bits */
++#define I2C_CFG_DEVADLEN_7                   (6<<2)
++#define I2C_CFG_ADDRDIS                      BIT(1)
++#define I2C_CFG_DEVADDIS                     BIT(0)
++
++#define I2C_CFG_DEFAULT	(I2C_CFG_ADDRLEN_8 | \
++		I2C_CFG_DEVADLEN_7 | \
++		I2C_CFG_ADDRDIS)
++
++#define I2C_RETRY                            0x1000
++
++#define CLKDIV_VALUE                         333
++#define i2c_busy_loop                        (CLKDIV_VALUE*30)
++
++#define READ_CMD                             0x01
++#define WRITE_CMD                            0x00
++#define READ_BLOCK                           16
++
++#define SM0_ODRAIN                           BIT(31)
++#define SM0_VSYNC_MODE                       BIT(28)
++#define SM0_CLK_DIV                          (CLKDIV_VALUE << 16)
++#define SM0_WAIT_LEVEL                       BIT(6)
++#define SM0_EN                               BIT(1)
++
++#define SM0_CFG_DEFUALT (SM0_ODRAIN | SM0_VSYNC_MODE | \
++                        SM0_CLK_DIV | SM0_WAIT_LEVEL | \
++                        SM0_EN) 
++/***********************************************************/
++
++static void __iomem *membase;
++static struct i2c_adapter *adapter;
++
++static void rt_i2c_w32(u32 val, unsigned reg)
++{
++	iowrite32(val, membase + reg);
++}
++
++static u32 rt_i2c_r32(unsigned reg)
++{
++	return ioread32(membase + reg);
++}
++
++static void mt7621_i2c_reset(struct i2c_adapter *a)
++{
++	device_reset(a->dev.parent);
++}
++static void mt7621_i2c_enable(struct i2c_msg *msg)
++{
++	rt_i2c_w32(msg->addr,REG_DEVADDR_REG);
++	rt_i2c_w32(0,REG_ADDR_REG);
++}
++
++static void i2c_master_init(struct i2c_adapter *a)
++{
++	mt7621_i2c_reset(a); 
++	rt_i2c_w32(I2C_CFG_DEFAULT,REG_CONFIG_REG);    
++	rt_i2c_w32(SM0_CFG_DEFUALT,REG_SM0CTL0);
++	rt_i2c_w32(1,REG_SM0_IS_AUTOMODE);//auto mode
++}
++
++
++static inline int rt_i2c_wait_rx_done(void)
++{
++	int i=0;
++	while((!(rt_i2c_r32(REG_STATUS_REG) & I2C_DATARDY)) && (i<i2c_busy_loop))
++		i++;
++	if(i>=i2c_busy_loop){
++		pr_err("err,wait for idle timeout");
++		return -ETIMEDOUT;
++	}
++	return 0;
++}
++
++static inline int rt_i2c_wait_idle(void)
++{
++	int i=0;
++	while((rt_i2c_r32(REG_STATUS_REG) & I2C_BUSY) && (i<i2c_busy_loop))
++		i++;
++	if(i>=i2c_busy_loop){
++		pr_err("err,wait for idle timeout");
++		return -ETIMEDOUT;
++	}
++	return 0;
++}
++
++static inline int rt_i2c_wait_tx_done(void)
++{
++	int i=0;
++	while((!(rt_i2c_r32(REG_STATUS_REG) & I2C_SDOEMPTY)) && (i<i2c_busy_loop))
++		i++;
++	if(i>=i2c_busy_loop){
++		pr_err("err,wait for idle timeout");
++		return -ETIMEDOUT;
++	}
++	return 0;
++}
++
++static int rt_i2c_handle_msg(struct i2c_adapter *a, struct i2c_msg* msg)
++{
++	int i = 0, j = 0, pos = 0;
++	int nblock = msg->len / READ_BLOCK;
++	int rem = msg->len % READ_BLOCK;
++
++	if (msg->flags & I2C_M_TEN) {
++		printk("10 bits addr not supported\n");
++		return -EINVAL;
++	}
++
++	if (msg->flags & I2C_M_RD) {
++		for (i = 0; i < nblock; i++) {
++			if (rt_i2c_wait_idle())
++				goto err_timeout;
++			rt_i2c_w32(READ_BLOCK - 1, REG_BYTECNT_REG);
++			rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
++			for (j = 0; j < READ_BLOCK; j++) {
++				if (rt_i2c_wait_rx_done())
++					goto err_timeout;
++				msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
++			}
++		}
++
++		if (rt_i2c_wait_idle())
++		    goto err_timeout;
++		rt_i2c_w32(rem - 1, REG_BYTECNT_REG);
++		rt_i2c_w32(READ_CMD, REG_STARTXFR_REG);
++		
++		for (i = 0; i < rem; i++) {
++			if (rt_i2c_wait_rx_done())
++				goto err_timeout;
++			msg->buf[pos++] = rt_i2c_r32(REG_DATAIN_REG);
++		}
++	} else {
++		if (rt_i2c_wait_idle())
++	        	goto err_timeout;
++		rt_i2c_w32(msg->len - 1, REG_BYTECNT_REG);
++		for (i = 0; i < msg->len; i++) {
++			rt_i2c_w32(msg->buf[i], REG_DATAOUT_REG);
++			if(i == 0)
++				rt_i2c_w32(WRITE_CMD, REG_STARTXFR_REG);
++
++			if (rt_i2c_wait_tx_done())
++				goto err_timeout;
++		}
++	}
++
++	return 0;
++err_timeout:
++	return -ETIMEDOUT;
++}
++
++static int rt_i2c_master_xfer(struct i2c_adapter *a, struct i2c_msg *m, int n)
++{
++	int i = 0;
++	int ret = 0;
++	i2c_master_init(a);
++	mt7621_i2c_enable(m);
++
++	for (i = 0; i != n && ret==0; i++) {
++		ret = rt_i2c_handle_msg(a, &m[i]);
++		if (ret) 
++			return ret;	
++	}
++	return i;
++}
++
++static u32 rt_i2c_func(struct i2c_adapter *a)
++{
++	return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
++}
++
++static const struct i2c_algorithm rt_i2c_algo = {
++	.master_xfer	= rt_i2c_master_xfer,
++	.functionality	= rt_i2c_func,
++};
++
++static int rt_i2c_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	int ret;
++
++	adapter = devm_kzalloc(&pdev->dev,sizeof(struct i2c_adapter), GFP_KERNEL);
++	if (!adapter) {
++		dev_err(&pdev->dev, "failed to allocate i2c_adapter\n");
++		return -ENOMEM;
++	}
++	membase = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(membase))
++		return PTR_ERR(membase);
++
++	strlcpy(adapter->name, dev_name(&pdev->dev), sizeof(adapter->name));
++
++	adapter->owner = THIS_MODULE;
++	adapter->nr = pdev->id;
++	adapter->timeout = HZ;
++	adapter->algo = &rt_i2c_algo;
++	adapter->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
++	adapter->dev.parent = &pdev->dev;
++	adapter->dev.of_node = pdev->dev.of_node;
++
++	platform_set_drvdata(pdev, adapter);
++	
++	ret = i2c_add_numbered_adapter(adapter);
++	if (ret)
++		return ret;
++
++	dev_info(&pdev->dev,"loaded");
++
++	return 0;
++}
++
++static int rt_i2c_remove(struct platform_device *pdev)
++{
++	platform_set_drvdata(pdev, NULL);
++	return 0;
++}
++
++static const struct of_device_id i2c_rt_dt_ids[] = {
++	{ .compatible = "ralink,i2c-mt7621", },
++	{ /* sentinel */ }
++};
++
++MODULE_DEVICE_TABLE(of, i2c_rt_dt_ids);
++
++static struct platform_driver rt_i2c_driver = {
++	.probe		= rt_i2c_probe,
++	.remove		= rt_i2c_remove,
++	.driver		= {
++		.owner	= THIS_MODULE,
++		.name	= "i2c-mt7621",
++		.of_match_table = i2c_rt_dt_ids,
++	},
++};
++
++static int __init i2c_rt_init (void)
++{
++	return platform_driver_register(&rt_i2c_driver);
++}
++
++static void __exit i2c_rt_exit (void)
++{
++	platform_driver_unregister(&rt_i2c_driver);
++}
++module_init (i2c_rt_init);
++module_exit (i2c_rt_exit);
++
++MODULE_AUTHOR("Steven Liu <[email protected]>");
++MODULE_DESCRIPTION("MT7621 I2c host driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:MT7621-I2C");

target/linux/ramips/patches-4.4/0046-mmc-MIPS-ralink-add-sdhci-for-mt7620a-SoC.patch

@@ -0,0 +1,4823 @@
+From 23147af14531cbdada194b94120ef8774f46292d Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Thu, 13 Nov 2014 19:08:40 +0100
+Subject: [PATCH 46/53] mmc: MIPS: ralink: add sdhci for mt7620a SoC
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/mmc/host/Kconfig             |    2 +
+ drivers/mmc/host/Makefile            |    1 +
+ drivers/mmc/host/mtk-mmc/Kconfig     |   16 +
+ drivers/mmc/host/mtk-mmc/Makefile    |   42 +
+ drivers/mmc/host/mtk-mmc/board.h     |  137 ++
+ drivers/mmc/host/mtk-mmc/dbg.c       |  347 ++++
+ drivers/mmc/host/mtk-mmc/dbg.h       |  156 ++
+ drivers/mmc/host/mtk-mmc/mt6575_sd.h | 1001 +++++++++++
+ drivers/mmc/host/mtk-mmc/sd.c        | 3060 ++++++++++++++++++++++++++++++++++
+ 9 files changed, 4762 insertions(+)
+ create mode 100644 drivers/mmc/host/mtk-mmc/Kconfig
+ create mode 100644 drivers/mmc/host/mtk-mmc/Makefile
+ create mode 100644 drivers/mmc/host/mtk-mmc/board.h
+ create mode 100644 drivers/mmc/host/mtk-mmc/dbg.c
+ create mode 100644 drivers/mmc/host/mtk-mmc/dbg.h
+ create mode 100644 drivers/mmc/host/mtk-mmc/mt6575_sd.h
+ create mode 100644 drivers/mmc/host/mtk-mmc/sd.c
+
+--- a/drivers/mmc/host/Kconfig
++++ b/drivers/mmc/host/Kconfig
+@@ -810,3 +810,5 @@ config MMC_MTK
+ 	  If you have a machine with a integrated SD/MMC card reader, say Y or M here.
+ 	  This is needed if support for any SD/SDIO/MMC devices is required.
+ 	  If unsure, say N.
++
++source "drivers/mmc/host/mtk-mmc/Kconfig"
+--- a/drivers/mmc/host/Makefile
++++ b/drivers/mmc/host/Makefile
+@@ -2,6 +2,7 @@
+ # Makefile for MMC/SD host controller drivers
+ #
+ 
++obj-$(CONFIG_MTK_MMC) 		+= mtk-mmc/
+ obj-$(CONFIG_MMC_ARMMMCI)	+= mmci.o
+ obj-$(CONFIG_MMC_QCOM_DML)	+= mmci_qcom_dml.o
+ obj-$(CONFIG_MMC_PXA)		+= pxamci.o
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/Kconfig
+@@ -0,0 +1,16 @@
++config MTK_MMC
++	tristate "MTK SD/MMC"
++	depends on !MTD_NAND_RALINK
++
++config MTK_AEE_KDUMP
++	bool "MTK AEE KDUMP"
++	depends on MTK_MMC
++
++config MTK_MMC_CD_POLL
++	bool "Card Detect with Polling"
++	depends on MTK_MMC
++
++config MTK_MMC_EMMC_8BIT
++	bool "eMMC 8-bit support"
++	depends on MTK_MMC && RALINK_MT7628
++
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/Makefile
+@@ -0,0 +1,42 @@
++# Copyright Statement:
++#
++# This software/firmware and related documentation ("MediaTek Software") are
++# protected under relevant copyright laws. The information contained herein
++# is confidential and proprietary to MediaTek Inc. and/or its licensors.
++# Without the prior written permission of MediaTek inc. and/or its licensors,
++# any reproduction, modification, use or disclosure of MediaTek Software,
++# and information contained herein, in whole or in part, shall be strictly prohibited.
++#
++# MediaTek Inc. (C) 2010. All rights reserved.
++#
++# BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++# THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++# RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++# AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++# NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++# SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++# SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++# THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++# THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++# CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++# SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++# STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++# CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++# AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++# OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++# MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++#
++# The following software/firmware and/or related documentation ("MediaTek Software")
++# have been modified by MediaTek Inc. All revisions are subject to any receiver's
++# applicable license agreements with MediaTek Inc.
++
++obj-$(CONFIG_MTK_MMC) += mtk_sd.o
++mtk_sd-objs := sd.o dbg.o
++ifeq ($(CONFIG_MTK_AEE_KDUMP),y)
++EXTRA_CFLAGS		+= -DMT6575_SD_DEBUG
++endif
++
++clean:
++	@rm -f *.o modules.order .*.cmd
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/board.h
+@@ -0,0 +1,137 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ */
++/* MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++#ifndef __ARCH_ARM_MACH_BOARD_H
++#define __ARCH_ARM_MACH_BOARD_H
++
++#include <generated/autoconf.h>
++#include <linux/pm.h>
++/* --- chhung */
++// #include <mach/mt6575.h>
++// #include <board-custom.h>
++/* end of chhung */
++
++typedef void (*sdio_irq_handler_t)(void*);  /* external irq handler */
++typedef void (*pm_callback_t)(pm_message_t state, void *data);
++
++#define MSDC_CD_PIN_EN      (1 << 0)  /* card detection pin is wired   */
++#define MSDC_WP_PIN_EN      (1 << 1)  /* write protection pin is wired */
++#define MSDC_RST_PIN_EN     (1 << 2)  /* emmc reset pin is wired       */
++#define MSDC_SDIO_IRQ       (1 << 3)  /* use internal sdio irq (bus)   */
++#define MSDC_EXT_SDIO_IRQ   (1 << 4)  /* use external sdio irq         */
++#define MSDC_REMOVABLE      (1 << 5)  /* removable slot                */
++#define MSDC_SYS_SUSPEND    (1 << 6)  /* suspended by system           */
++#define MSDC_HIGHSPEED      (1 << 7)  /* high-speed mode support       */
++#define MSDC_UHS1           (1 << 8)  /* uhs-1 mode support            */
++#define MSDC_DDR            (1 << 9)  /* ddr mode support              */
++
++
++#define MSDC_SMPL_RISING    (0)
++#define MSDC_SMPL_FALLING   (1)
++
++#define MSDC_CMD_PIN        (0)
++#define MSDC_DAT_PIN        (1)
++#define MSDC_CD_PIN         (2)
++#define MSDC_WP_PIN         (3)
++#define MSDC_RST_PIN        (4)
++
++enum {
++    MSDC_CLKSRC_48MHZ = 0,
++//    MSDC_CLKSRC_26MHZ = 0,
++//    MSDC_CLKSRC_197MHZ = 1,
++//    MSDC_CLKSRC_208MHZ = 2
++};
++
++struct msdc_hw {
++    unsigned char  clk_src;          /* host clock source */
++    unsigned char  cmd_edge;         /* command latch edge */
++    unsigned char  data_edge;        /* data latch edge */
++    unsigned char  clk_drv;          /* clock pad driving */
++    unsigned char  cmd_drv;          /* command pad driving */
++    unsigned char  dat_drv;          /* data pad driving */
++    unsigned long  flags;            /* hardware capability flags */
++    unsigned long  data_pins;        /* data pins */
++    unsigned long  data_offset;      /* data address offset */
++
++    /* config gpio pull mode */
++    void (*config_gpio_pin)(int type, int pull);
++
++    /* external power control for card */
++    void (*ext_power_on)(void);
++    void (*ext_power_off)(void);
++
++    /* external sdio irq operations */
++    void (*request_sdio_eirq)(sdio_irq_handler_t sdio_irq_handler, void *data);
++    void (*enable_sdio_eirq)(void);
++    void (*disable_sdio_eirq)(void);
++
++    /* external cd irq operations */
++    void (*request_cd_eirq)(sdio_irq_handler_t cd_irq_handler, void *data);
++    void (*enable_cd_eirq)(void);
++    void (*disable_cd_eirq)(void);
++    int  (*get_cd_status)(void);
++    
++    /* power management callback for external module */
++    void (*register_pm)(pm_callback_t pm_cb, void *data);
++};
++
++extern struct msdc_hw msdc0_hw;
++extern struct msdc_hw msdc1_hw;
++extern struct msdc_hw msdc2_hw;
++extern struct msdc_hw msdc3_hw;
++
++/*GPS driver*/
++#define GPS_FLAG_FORCE_OFF  0x0001
++struct mt3326_gps_hardware {
++    int (*ext_power_on)(int);
++    int (*ext_power_off)(int);
++};
++extern struct mt3326_gps_hardware mt3326_gps_hw;
++
++/* NAND driver */
++struct mt6575_nand_host_hw {
++    unsigned int nfi_bus_width;		    /* NFI_BUS_WIDTH */ 
++	unsigned int nfi_access_timing;		/* NFI_ACCESS_TIMING */  
++	unsigned int nfi_cs_num;			/* NFI_CS_NUM */
++	unsigned int nand_sec_size;			/* NAND_SECTOR_SIZE */
++	unsigned int nand_sec_shift;		/* NAND_SECTOR_SHIFT */
++	unsigned int nand_ecc_size;
++	unsigned int nand_ecc_bytes;
++	unsigned int nand_ecc_mode;
++};
++extern struct mt6575_nand_host_hw mt6575_nand_hw;
++
++#endif /* __ARCH_ARM_MACH_BOARD_H */
++
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/dbg.c
+@@ -0,0 +1,347 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ *
++ * MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++ 
++#include <linux/version.h>
++#include <linux/kernel.h>
++#include <linux/sched.h>
++#include <linux/kthread.h>
++#include <linux/delay.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/proc_fs.h>
++#include <linux/string.h>
++#include <linux/uaccess.h>
++// #include <mach/mt6575_gpt.h> /* --- by chhung */
++#include "dbg.h"
++#include "mt6575_sd.h"
++#include <linux/seq_file.h>
++
++static char cmd_buf[256];
++
++/* for debug zone */
++unsigned int sd_debug_zone[4]={
++	0,
++	0,
++	0,
++	0
++};
++
++/* mode select */
++u32 dma_size[4]={
++	512,
++	512,
++	512,
++	512
++};
++msdc_mode drv_mode[4]={
++	MODE_SIZE_DEP, /* using DMA or not depend on the size */
++	MODE_SIZE_DEP,
++	MODE_SIZE_DEP,
++	MODE_SIZE_DEP
++};
++
++#if defined (MT6575_SD_DEBUG)
++/* for driver profile */
++#define TICKS_ONE_MS  (13000)
++u32 gpt_enable = 0;
++u32 sdio_pro_enable = 0;   /* make sure gpt is enabled */
++u32 sdio_pro_time = 0;     /* no more than 30s */
++struct sdio_profile sdio_perfomance = {0};  
++
++#if 0 /* --- chhung */
++void msdc_init_gpt(void)
++{
++    GPT_CONFIG config;	
++    
++    config.num  = GPT6;
++    config.mode = GPT_FREE_RUN;
++    config.clkSrc = GPT_CLK_SRC_SYS;
++    config.clkDiv = GPT_CLK_DIV_1;   /* 13MHz GPT6 */
++            
++    if (GPT_Config(config) == FALSE )
++        return;                       
++        
++    GPT_Start(GPT6);	
++}
++#endif /* end of --- */
++
++u32 msdc_time_calc(u32 old_L32, u32 old_H32, u32 new_L32, u32 new_H32)
++{
++    u32 ret = 0; 
++    
++    if (new_H32 == old_H32) {
++        ret = new_L32 - old_L32;
++    } else if(new_H32 == (old_H32 + 1)) {
++        if (new_L32 > old_L32) {	
++            printk("msdc old_L<0x%x> new_L<0x%x>\n", old_L32, new_L32);	
++        }
++        ret = (0xffffffff - old_L32);  	      
++        ret += new_L32; 
++    } else {
++        printk("msdc old_H<0x%x> new_H<0x%x>\n", old_H32, new_H32);		
++    }
++
++    return ret;        	
++}
++
++void msdc_sdio_profile(struct sdio_profile* result)
++{
++    struct cmd_profile*  cmd;
++    u32 i; 	
++    
++    printk("sdio === performance dump ===\n");
++    printk("sdio === total execute tick<%d> time<%dms> Tx<%dB> Rx<%dB>\n", 
++                    result->total_tc, result->total_tc / TICKS_ONE_MS, 
++                    result->total_tx_bytes, result->total_rx_bytes);    
++
++    /* CMD52 Dump */
++    cmd = &result->cmd52_rx; 
++    printk("sdio === CMD52 Rx <%d>times tick<%d> Max<%d> Min<%d> Aver<%d>\n", cmd->count, cmd->tot_tc, 
++                    cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count);     
++    cmd = &result->cmd52_tx; 
++    printk("sdio === CMD52 Tx <%d>times tick<%d> Max<%d> Min<%d> Aver<%d>\n", cmd->count, cmd->tot_tc, 
++                    cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count);   
++                    
++    /* CMD53 Rx bytes + block mode */
++    for (i=0; i<512; i++) {
++        cmd = &result->cmd53_rx_byte[i];
++        if (cmd->count) {
++            printk("sdio<%6d><%3dB>_Rx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n", cmd->count, i, cmd->tot_tc, 
++                             cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count,
++                             cmd->tot_bytes, (cmd->tot_bytes/10)*13 / (cmd->tot_tc/10));                        	
++        }	
++    }  
++    for (i=0; i<100; i++) {
++        cmd = &result->cmd53_rx_blk[i];
++        if (cmd->count) {
++            printk("sdio<%6d><%3d>B_Rx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n", cmd->count, i, cmd->tot_tc, 
++                             cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count,
++                             cmd->tot_bytes, (cmd->tot_bytes/10)*13 / (cmd->tot_tc/10));                        	
++        }	
++    }
++
++    /* CMD53 Tx bytes + block mode */
++    for (i=0; i<512; i++) {
++        cmd = &result->cmd53_tx_byte[i];
++        if (cmd->count) {
++            printk("sdio<%6d><%3dB>_Tx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n", cmd->count, i, cmd->tot_tc, 
++                             cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count,
++                             cmd->tot_bytes, (cmd->tot_bytes/10)*13 / (cmd->tot_tc/10));                          	
++        }	
++    }          
++    for (i=0; i<100; i++) {
++        cmd = &result->cmd53_tx_blk[i];
++        if (cmd->count) {
++            printk("sdio<%6d><%3d>B_Tx_<%9d><%9d><%6d><%6d>_<%9dB><%2dM>\n", cmd->count, i, cmd->tot_tc, 
++                             cmd->max_tc, cmd->min_tc, cmd->tot_tc/cmd->count,
++                             cmd->tot_bytes, (cmd->tot_bytes/10)*13 / (cmd->tot_tc/10));                            	
++        }	
++    }     
++    
++    printk("sdio === performance dump done ===\n");      
++}
++
++//========= sdio command table ===========
++void msdc_performance(u32 opcode, u32 sizes, u32 bRx, u32 ticks)
++{
++    struct sdio_profile* result = &sdio_perfomance; 
++    struct cmd_profile*  cmd; 
++    u32 block;     	
++
++    if (sdio_pro_enable == 0) {
++        return;
++    }
++
++    if (opcode == 52) {
++        cmd = bRx ?  &result->cmd52_rx : &result->cmd52_tx;   	
++    } else if (opcode == 53) {
++        if (sizes < 512) {
++            cmd = bRx ?  &result->cmd53_rx_byte[sizes] : &result->cmd53_tx_byte[sizes];    	
++        } else {
++            block = sizes / 512; 
++            if (block >= 99) {
++               printk("cmd53 error blocks\n"); 
++               while(1);	
++            }
++            cmd = bRx ?  &result->cmd53_rx_blk[block] : &result->cmd53_tx_blk[block];       	
++        }   	
++    } else {
++        return; 	
++    }
++        
++    /* update the members */
++    if (ticks > cmd->max_tc){
++        cmd->max_tc = ticks;	
++    }
++    if (cmd->min_tc == 0 || ticks < cmd->min_tc) {
++        cmd->min_tc = ticks; 	  
++    }
++    cmd->tot_tc += ticks;
++    cmd->tot_bytes += sizes; 
++    cmd->count ++; 
++    
++    if (bRx) {
++        result->total_rx_bytes += sizes;    	
++    } else {
++        result->total_tx_bytes += sizes; 	
++    }
++    result->total_tc += ticks; 
++    
++    /* dump when total_tc > 30s */
++    if (result->total_tc >= sdio_pro_time * TICKS_ONE_MS * 1000) {
++        msdc_sdio_profile(result);       
++        memset(result, 0 , sizeof(struct sdio_profile));                                             
++    }
++}
++
++//========== driver proc interface ===========
++static int msdc_debug_proc_read(struct seq_file *s, void *p)
++{
++	seq_printf(s, "\n=========================================\n");
++	seq_printf(s, "Index<0> + Id + Zone\n");
++	seq_printf(s, "-> PWR<9> WRN<8> | FIO<7> OPS<6> FUN<5> CFG<4> | INT<3> RSP<2> CMD<1> DMA<0>\n");
++	seq_printf(s, "-> echo 0 3 0x3ff >msdc_bebug -> host[3] debug zone set to 0x3ff\n");
++	seq_printf(s, "-> MSDC[0] Zone: 0x%.8x\n", sd_debug_zone[0]);
++	seq_printf(s, "-> MSDC[1] Zone: 0x%.8x\n", sd_debug_zone[1]);
++	seq_printf(s, "-> MSDC[2] Zone: 0x%.8x\n", sd_debug_zone[2]);
++	seq_printf(s, "-> MSDC[3] Zone: 0x%.8x\n", sd_debug_zone[3]);
++
++	seq_printf(s, "Index<1> + ID:4|Mode:4 + DMA_SIZE\n");
++	seq_printf(s, "-> 0)PIO 1)DMA 2)SIZE\n");
++	seq_printf(s, "-> echo 1 22 0x200 >msdc_bebug -> host[2] size mode, dma when >= 512\n");
++	seq_printf(s, "-> MSDC[0] mode<%d> size<%d>\n", drv_mode[0], dma_size[0]);
++	seq_printf(s, "-> MSDC[1] mode<%d> size<%d>\n", drv_mode[1], dma_size[1]);
++	seq_printf(s, "-> MSDC[2] mode<%d> size<%d>\n", drv_mode[2], dma_size[2]);
++	seq_printf(s, "-> MSDC[3] mode<%d> size<%d>\n", drv_mode[3], dma_size[3]);
++
++	seq_printf(s, "Index<3> + SDIO_PROFILE + TIME\n");
++	seq_printf(s, "-> echo 3 1 0x1E >msdc_bebug -> enable sdio_profile, 30s\n");
++	seq_printf(s, "-> SDIO_PROFILE<%d> TIME<%ds>\n", sdio_pro_enable, sdio_pro_time);
++	seq_printf(s, "=========================================\n\n");
++
++	return 0;
++}
++
++static ssize_t msdc_debug_proc_write(struct file *file, 
++			const char __user *buf, size_t count, loff_t *data)
++{
++	int ret;
++	
++	int cmd, p1, p2;   
++	int id, zone;
++	int mode, size;  
++  
++	if (count == 0)return -1;
++	if(count > 255)count = 255;
++
++	ret = copy_from_user(cmd_buf, buf, count);
++	if (ret < 0)return -1;
++	
++	cmd_buf[count] = '\0';
++	printk("msdc Write %s\n", cmd_buf);
++
++	sscanf(cmd_buf, "%x %x %x", &cmd, &p1, &p2);
++	
++	if(cmd == SD_TOOL_ZONE) {
++		id = p1; zone = p2; zone &= 0x3ff;		
++		printk("msdc host_id<%d> zone<0x%.8x>\n", id, zone);
++		if(id >=0 && id<=3){
++			sd_debug_zone[id] = zone;
++		}
++		else if(id == 4){
++			sd_debug_zone[0] = sd_debug_zone[1] = zone;
++			sd_debug_zone[2] = sd_debug_zone[3] = zone;
++		}
++		else{
++			printk("msdc host_id error when set debug zone\n");
++		}
++	} else if (cmd == SD_TOOL_DMA_SIZE) {
++		id = p1>>4;  mode = (p1&0xf); size = p2; 
++		if(id >=0 && id<=3){
++			drv_mode[id] = mode;
++			dma_size[id] = p2; 
++		}
++		else if(id == 4){
++			drv_mode[0] = drv_mode[1] = mode;
++			drv_mode[2] = drv_mode[3] = mode;
++			dma_size[0] = dma_size[1] = p2; 
++			dma_size[2] = dma_size[3] = p2;
++		}
++		else{
++			printk("msdc host_id error when select mode\n");
++		}	
++	} else if (cmd == SD_TOOL_SDIO_PROFILE) {
++		if (p1 == 1) { /* enable profile */
++			if (gpt_enable == 0) {
++				// msdc_init_gpt(); /* --- by chhung */
++				gpt_enable = 1;
++			} 
++			sdio_pro_enable = 1;
++			if (p2 == 0) p2 = 1; if (p2 >= 30) p2 = 30; 				
++			sdio_pro_time = p2 ; 
++		}	else if (p1 == 0) {
++			/* todo */
++			sdio_pro_enable = 0;
++		}			
++	}
++	
++	return count;
++}
++
++static int msdc_debug_show(struct inode *inode, struct file *file)
++{
++	return single_open(file, msdc_debug_proc_read, NULL);
++}
++
++static const struct file_operations msdc_debug_fops = {
++	.owner	 	= THIS_MODULE,
++	.open 		= msdc_debug_show,
++	.read 		= seq_read,
++	.write 		= msdc_debug_proc_write,
++	.llseek 	= seq_lseek,
++	.release 	= single_release,
++};
++
++int msdc_debug_proc_init(void) 
++{   	
++    struct proc_dir_entry *de = proc_create("msdc_debug", 0667, NULL, &msdc_debug_fops);
++
++    if (!de || IS_ERR(de))
++    	printk("!! Create MSDC debug PROC fail !!\n");
++    
++    return 0 ;
++}
++EXPORT_SYMBOL_GPL(msdc_debug_proc_init);
++#endif
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/dbg.h
+@@ -0,0 +1,156 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ *
++ * MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++#ifndef __MT_MSDC_DEUBG__
++#define __MT_MSDC_DEUBG__
++
++//==========================
++extern u32 sdio_pro_enable;
++/* for a type command, e.g. CMD53, 2 blocks */
++struct cmd_profile {
++    u32 max_tc;    /* Max tick count */
++    u32 min_tc; 	
++    u32 tot_tc;    /* total tick count */
++    u32 tot_bytes;  
++    u32 count;     /* the counts of the command */
++};
++
++/* dump when total_tc and total_bytes */
++struct sdio_profile {
++    u32 total_tc;         /* total tick count of CMD52 and CMD53 */
++    u32 total_tx_bytes;   /* total bytes of CMD53 Tx */
++    u32 total_rx_bytes;   /* total bytes of CMD53 Rx */
++    
++    /*CMD52*/
++    struct cmd_profile cmd52_tx; 
++    struct cmd_profile cmd52_rx; 
++
++    /*CMD53 in byte unit */
++    struct cmd_profile cmd53_tx_byte[512]; 
++    struct cmd_profile cmd53_rx_byte[512];            	
++    
++    /*CMD53 in block unit */
++    struct cmd_profile cmd53_tx_blk[100]; 
++    struct cmd_profile cmd53_rx_blk[100];         
++};
++
++//==========================
++typedef enum {
++    SD_TOOL_ZONE = 0, 
++    SD_TOOL_DMA_SIZE  = 1,	
++    SD_TOOL_PM_ENABLE = 2,
++    SD_TOOL_SDIO_PROFILE = 3,     
++} msdc_dbg;	
++
++typedef enum {
++    MODE_PIO = 0,
++    MODE_DMA = 1,
++    MODE_SIZE_DEP = 2,
++} msdc_mode;
++extern msdc_mode drv_mode[4];
++extern u32 dma_size[4];
++
++/* Debug message event */
++#define DBG_EVT_NONE        (0)       /* No event */
++#define DBG_EVT_DMA         (1 << 0)  /* DMA related event */
++#define DBG_EVT_CMD         (1 << 1)  /* MSDC CMD related event */
++#define DBG_EVT_RSP         (1 << 2)  /* MSDC CMD RSP related event */
++#define DBG_EVT_INT         (1 << 3)  /* MSDC INT event */
++#define DBG_EVT_CFG         (1 << 4)  /* MSDC CFG event */
++#define DBG_EVT_FUC         (1 << 5)  /* Function event */
++#define DBG_EVT_OPS         (1 << 6)  /* Read/Write operation event */
++#define DBG_EVT_FIO         (1 << 7)  /* FIFO operation event */
++#define DBG_EVT_WRN         (1 << 8)  /* Warning event */
++#define DBG_EVT_PWR         (1 << 9)  /* Power event */
++#define DBG_EVT_ALL         (0xffffffff)
++
++#define DBG_EVT_MASK        (DBG_EVT_ALL)
++
++extern unsigned int sd_debug_zone[4];
++#define TAG "msdc"
++#if 0 /* +++ chhung */
++#define BUG_ON(x) \
++do { \
++	if (x) { \
++		printk("[BUG] %s LINE:%d FILE:%s\n", #x, __LINE__, __FILE__); \
++		while(1); \
++	} \
++}while(0)
++#endif /* end of +++ */
++
++#define N_MSG(evt, fmt, args...)
++/*
++do {    \
++    if ((DBG_EVT_##evt) & sd_debug_zone[host->id]) { \
++        printk(KERN_ERR TAG"%d -> "fmt" <- %s() : L<%d> PID<%s><0x%x>\n", \
++            host->id,  ##args , __FUNCTION__, __LINE__, current->comm, current->pid);	\
++    } \
++} while(0)
++*/
++
++#define ERR_MSG(fmt, args...) \
++do { \
++    printk(KERN_ERR TAG"%d -> "fmt" <- %s() : L<%d> PID<%s><0x%x>\n", \
++        host->id,  ##args , __FUNCTION__, __LINE__, current->comm, current->pid); \
++} while(0); 
++
++#if 1
++//defined CONFIG_MTK_MMC_CD_POLL        
++#define INIT_MSG(fmt, args...)
++#define IRQ_MSG(fmt, args...) 
++#else
++#define INIT_MSG(fmt, args...) \
++do { \
++    printk(KERN_ERR TAG"%d -> "fmt" <- %s() : L<%d> PID<%s><0x%x>\n", \
++        host->id,  ##args , __FUNCTION__, __LINE__, current->comm, current->pid); \
++} while(0);
++
++/* PID in ISR in not corrent */
++#define IRQ_MSG(fmt, args...) \
++do { \
++    printk(KERN_ERR TAG"%d -> "fmt" <- %s() : L<%d>\n", \
++        host->id,  ##args , __FUNCTION__, __LINE__); \
++} while(0);
++#endif
++
++int msdc_debug_proc_init(void); 
++
++#if 0 /* --- chhung */
++void msdc_init_gpt(void);
++extern void GPT_GetCounter64(UINT32 *cntL32, UINT32 *cntH32);
++#endif /* end of --- */
++u32 msdc_time_calc(u32 old_L32, u32 old_H32, u32 new_L32, u32 new_H32);
++void msdc_performance(u32 opcode, u32 sizes, u32 bRx, u32 ticks);   
++
++#endif
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/mt6575_sd.h
+@@ -0,0 +1,1001 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ */
++/* MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++#ifndef MT6575_SD_H
++#define MT6575_SD_H
++
++#include <linux/bitops.h>
++#include <linux/mmc/host.h>
++
++// #include <mach/mt6575_reg_base.h> /* --- by chhung */
++
++/*--------------------------------------------------------------------------*/
++/* Common Macro                                                             */
++/*--------------------------------------------------------------------------*/
++#define REG_ADDR(x)                 ((volatile u32*)(base + OFFSET_##x))
++
++/*--------------------------------------------------------------------------*/
++/* Common Definition                                                        */
++/*--------------------------------------------------------------------------*/
++#define MSDC_FIFO_SZ            (128)
++#define MSDC_FIFO_THD           (64)  // (128)
++#define MSDC_NUM                (4)
++
++#define MSDC_MS                 (0)
++#define MSDC_SDMMC              (1)
++
++#define MSDC_MODE_UNKNOWN       (0)
++#define MSDC_MODE_PIO           (1)
++#define MSDC_MODE_DMA_BASIC     (2)
++#define MSDC_MODE_DMA_DESC      (3)
++#define MSDC_MODE_DMA_ENHANCED  (4)
++#define MSDC_MODE_MMC_STREAM    (5)
++
++#define MSDC_BUS_1BITS          (0)
++#define MSDC_BUS_4BITS          (1)
++#define MSDC_BUS_8BITS          (2)
++
++#define MSDC_BRUST_8B           (3)
++#define MSDC_BRUST_16B          (4)
++#define MSDC_BRUST_32B          (5)
++#define MSDC_BRUST_64B          (6)
++
++#define MSDC_PIN_PULL_NONE      (0)
++#define MSDC_PIN_PULL_DOWN      (1)
++#define MSDC_PIN_PULL_UP        (2)
++#define MSDC_PIN_KEEP           (3)
++
++#define MSDC_MAX_SCLK           (48000000) /* +/- by chhung */
++#define MSDC_MIN_SCLK           (260000)
++
++#define MSDC_AUTOCMD12          (0x0001)
++#define MSDC_AUTOCMD23          (0x0002)
++#define MSDC_AUTOCMD19          (0x0003)
++
++#define MSDC_EMMC_BOOTMODE0     (0)     /* Pull low CMD mode */
++#define MSDC_EMMC_BOOTMODE1     (1)     /* Reset CMD mode */
++
++enum {
++    RESP_NONE = 0,
++    RESP_R1,
++    RESP_R2,
++    RESP_R3,
++    RESP_R4,
++    RESP_R5,
++    RESP_R6,
++    RESP_R7,
++    RESP_R1B
++};
++
++/*--------------------------------------------------------------------------*/
++/* Register Offset                                                          */
++/*--------------------------------------------------------------------------*/
++#define OFFSET_MSDC_CFG         (0x0)
++#define OFFSET_MSDC_IOCON       (0x04)
++#define OFFSET_MSDC_PS          (0x08)
++#define OFFSET_MSDC_INT         (0x0c)
++#define OFFSET_MSDC_INTEN       (0x10)
++#define OFFSET_MSDC_FIFOCS      (0x14)
++#define OFFSET_MSDC_TXDATA      (0x18)
++#define OFFSET_MSDC_RXDATA      (0x1c)
++#define OFFSET_SDC_CFG          (0x30)
++#define OFFSET_SDC_CMD          (0x34)
++#define OFFSET_SDC_ARG          (0x38)
++#define OFFSET_SDC_STS          (0x3c)
++#define OFFSET_SDC_RESP0        (0x40)
++#define OFFSET_SDC_RESP1        (0x44)
++#define OFFSET_SDC_RESP2        (0x48)
++#define OFFSET_SDC_RESP3        (0x4c)
++#define OFFSET_SDC_BLK_NUM      (0x50)
++#define OFFSET_SDC_CSTS         (0x58)
++#define OFFSET_SDC_CSTS_EN      (0x5c)
++#define OFFSET_SDC_DCRC_STS     (0x60)
++#define OFFSET_EMMC_CFG0        (0x70)
++#define OFFSET_EMMC_CFG1        (0x74)
++#define OFFSET_EMMC_STS         (0x78)
++#define OFFSET_EMMC_IOCON       (0x7c)
++#define OFFSET_SDC_ACMD_RESP    (0x80)
++#define OFFSET_SDC_ACMD19_TRG   (0x84)
++#define OFFSET_SDC_ACMD19_STS   (0x88)
++#define OFFSET_MSDC_DMA_SA      (0x90)
++#define OFFSET_MSDC_DMA_CA      (0x94)
++#define OFFSET_MSDC_DMA_CTRL    (0x98)
++#define OFFSET_MSDC_DMA_CFG     (0x9c)
++#define OFFSET_MSDC_DBG_SEL     (0xa0)
++#define OFFSET_MSDC_DBG_OUT     (0xa4)
++#define OFFSET_MSDC_PATCH_BIT   (0xb0)
++#define OFFSET_MSDC_PATCH_BIT1  (0xb4)
++#define OFFSET_MSDC_PAD_CTL0    (0xe0)
++#define OFFSET_MSDC_PAD_CTL1    (0xe4)
++#define OFFSET_MSDC_PAD_CTL2    (0xe8)
++#define OFFSET_MSDC_PAD_TUNE    (0xec)
++#define OFFSET_MSDC_DAT_RDDLY0  (0xf0)
++#define OFFSET_MSDC_DAT_RDDLY1  (0xf4)
++#define OFFSET_MSDC_HW_DBG      (0xf8)
++#define OFFSET_MSDC_VERSION     (0x100)
++#define OFFSET_MSDC_ECO_VER     (0x104)
++
++/*--------------------------------------------------------------------------*/
++/* Register Address                                                         */
++/*--------------------------------------------------------------------------*/
++
++/* common register */
++#define MSDC_CFG                REG_ADDR(MSDC_CFG)
++#define MSDC_IOCON              REG_ADDR(MSDC_IOCON)
++#define MSDC_PS                 REG_ADDR(MSDC_PS)
++#define MSDC_INT                REG_ADDR(MSDC_INT)
++#define MSDC_INTEN              REG_ADDR(MSDC_INTEN)
++#define MSDC_FIFOCS             REG_ADDR(MSDC_FIFOCS)
++#define MSDC_TXDATA             REG_ADDR(MSDC_TXDATA)
++#define MSDC_RXDATA             REG_ADDR(MSDC_RXDATA)
++#define MSDC_PATCH_BIT0         REG_ADDR(MSDC_PATCH_BIT)
++
++/* sdmmc register */
++#define SDC_CFG                 REG_ADDR(SDC_CFG)
++#define SDC_CMD                 REG_ADDR(SDC_CMD)
++#define SDC_ARG                 REG_ADDR(SDC_ARG)
++#define SDC_STS                 REG_ADDR(SDC_STS)
++#define SDC_RESP0               REG_ADDR(SDC_RESP0)
++#define SDC_RESP1               REG_ADDR(SDC_RESP1)
++#define SDC_RESP2               REG_ADDR(SDC_RESP2)
++#define SDC_RESP3               REG_ADDR(SDC_RESP3)
++#define SDC_BLK_NUM             REG_ADDR(SDC_BLK_NUM)
++#define SDC_CSTS                REG_ADDR(SDC_CSTS)
++#define SDC_CSTS_EN             REG_ADDR(SDC_CSTS_EN)
++#define SDC_DCRC_STS            REG_ADDR(SDC_DCRC_STS)
++
++/* emmc register*/
++#define EMMC_CFG0               REG_ADDR(EMMC_CFG0)
++#define EMMC_CFG1               REG_ADDR(EMMC_CFG1)
++#define EMMC_STS                REG_ADDR(EMMC_STS)
++#define EMMC_IOCON              REG_ADDR(EMMC_IOCON)
++
++/* auto command register */
++#define SDC_ACMD_RESP           REG_ADDR(SDC_ACMD_RESP)
++#define SDC_ACMD19_TRG          REG_ADDR(SDC_ACMD19_TRG)
++#define SDC_ACMD19_STS          REG_ADDR(SDC_ACMD19_STS)
++
++/* dma register */
++#define MSDC_DMA_SA             REG_ADDR(MSDC_DMA_SA)
++#define MSDC_DMA_CA             REG_ADDR(MSDC_DMA_CA)
++#define MSDC_DMA_CTRL           REG_ADDR(MSDC_DMA_CTRL)
++#define MSDC_DMA_CFG            REG_ADDR(MSDC_DMA_CFG)
++
++/* pad ctrl register */
++#define MSDC_PAD_CTL0           REG_ADDR(MSDC_PAD_CTL0)
++#define MSDC_PAD_CTL1           REG_ADDR(MSDC_PAD_CTL1)
++#define MSDC_PAD_CTL2           REG_ADDR(MSDC_PAD_CTL2)
++
++/* data read delay */
++#define MSDC_DAT_RDDLY0         REG_ADDR(MSDC_DAT_RDDLY0)
++#define MSDC_DAT_RDDLY1         REG_ADDR(MSDC_DAT_RDDLY1)
++
++/* debug register */
++#define MSDC_DBG_SEL            REG_ADDR(MSDC_DBG_SEL)
++#define MSDC_DBG_OUT            REG_ADDR(MSDC_DBG_OUT)
++
++/* misc register */
++#define MSDC_PATCH_BIT          REG_ADDR(MSDC_PATCH_BIT)
++#define MSDC_PATCH_BIT1         REG_ADDR(MSDC_PATCH_BIT1)
++#define MSDC_PAD_TUNE           REG_ADDR(MSDC_PAD_TUNE)
++#define MSDC_HW_DBG             REG_ADDR(MSDC_HW_DBG)
++#define MSDC_VERSION            REG_ADDR(MSDC_VERSION)
++#define MSDC_ECO_VER            REG_ADDR(MSDC_ECO_VER) /* ECO Version */
++
++/*--------------------------------------------------------------------------*/
++/* Register Mask                                                            */
++/*--------------------------------------------------------------------------*/
++
++/* MSDC_CFG mask */
++#define MSDC_CFG_MODE           (0x1  << 0)     /* RW */
++#define MSDC_CFG_CKPDN          (0x1  << 1)     /* RW */
++#define MSDC_CFG_RST            (0x1  << 2)     /* RW */
++#define MSDC_CFG_PIO            (0x1  << 3)     /* RW */
++#define MSDC_CFG_CKDRVEN        (0x1  << 4)     /* RW */
++#define MSDC_CFG_BV18SDT        (0x1  << 5)     /* RW */
++#define MSDC_CFG_BV18PSS        (0x1  << 6)     /* R  */
++#define MSDC_CFG_CKSTB          (0x1  << 7)     /* R  */
++#define MSDC_CFG_CKDIV          (0xff << 8)     /* RW */
++#define MSDC_CFG_CKMOD          (0x3  << 16)    /* RW */
++
++/* MSDC_IOCON mask */
++#define MSDC_IOCON_SDR104CKS    (0x1  << 0)     /* RW */
++#define MSDC_IOCON_RSPL         (0x1  << 1)     /* RW */
++#define MSDC_IOCON_DSPL         (0x1  << 2)     /* RW */
++#define MSDC_IOCON_DDLSEL       (0x1  << 3)     /* RW */
++#define MSDC_IOCON_DDR50CKD     (0x1  << 4)     /* RW */
++#define MSDC_IOCON_DSPLSEL      (0x1  << 5)     /* RW */
++#define MSDC_IOCON_D0SPL        (0x1  << 16)    /* RW */
++#define MSDC_IOCON_D1SPL        (0x1  << 17)    /* RW */
++#define MSDC_IOCON_D2SPL        (0x1  << 18)    /* RW */
++#define MSDC_IOCON_D3SPL        (0x1  << 19)    /* RW */
++#define MSDC_IOCON_D4SPL        (0x1  << 20)    /* RW */
++#define MSDC_IOCON_D5SPL        (0x1  << 21)    /* RW */
++#define MSDC_IOCON_D6SPL        (0x1  << 22)    /* RW */
++#define MSDC_IOCON_D7SPL        (0x1  << 23)    /* RW */
++#define MSDC_IOCON_RISCSZ       (0x3  << 24)    /* RW */
++
++/* MSDC_PS mask */
++#define MSDC_PS_CDEN            (0x1  << 0)     /* RW */
++#define MSDC_PS_CDSTS           (0x1  << 1)     /* R  */
++#define MSDC_PS_CDDEBOUNCE      (0xf  << 12)    /* RW */
++#define MSDC_PS_DAT             (0xff << 16)    /* R  */
++#define MSDC_PS_CMD             (0x1  << 24)    /* R  */
++#define MSDC_PS_WP              (0x1UL<< 31)    /* R  */
++
++/* MSDC_INT mask */
++#define MSDC_INT_MMCIRQ         (0x1  << 0)     /* W1C */
++#define MSDC_INT_CDSC           (0x1  << 1)     /* W1C */
++#define MSDC_INT_ACMDRDY        (0x1  << 3)     /* W1C */
++#define MSDC_INT_ACMDTMO        (0x1  << 4)     /* W1C */
++#define MSDC_INT_ACMDCRCERR     (0x1  << 5)     /* W1C */
++#define MSDC_INT_DMAQ_EMPTY     (0x1  << 6)     /* W1C */
++#define MSDC_INT_SDIOIRQ        (0x1  << 7)     /* W1C */
++#define MSDC_INT_CMDRDY         (0x1  << 8)     /* W1C */
++#define MSDC_INT_CMDTMO         (0x1  << 9)     /* W1C */
++#define MSDC_INT_RSPCRCERR      (0x1  << 10)    /* W1C */
++#define MSDC_INT_CSTA           (0x1  << 11)    /* R */
++#define MSDC_INT_XFER_COMPL     (0x1  << 12)    /* W1C */
++#define MSDC_INT_DXFER_DONE     (0x1  << 13)    /* W1C */
++#define MSDC_INT_DATTMO         (0x1  << 14)    /* W1C */
++#define MSDC_INT_DATCRCERR      (0x1  << 15)    /* W1C */
++#define MSDC_INT_ACMD19_DONE    (0x1  << 16)    /* W1C */
++
++/* MSDC_INTEN mask */
++#define MSDC_INTEN_MMCIRQ       (0x1  << 0)     /* RW */
++#define MSDC_INTEN_CDSC         (0x1  << 1)     /* RW */
++#define MSDC_INTEN_ACMDRDY      (0x1  << 3)     /* RW */
++#define MSDC_INTEN_ACMDTMO      (0x1  << 4)     /* RW */
++#define MSDC_INTEN_ACMDCRCERR   (0x1  << 5)     /* RW */
++#define MSDC_INTEN_DMAQ_EMPTY   (0x1  << 6)     /* RW */
++#define MSDC_INTEN_SDIOIRQ      (0x1  << 7)     /* RW */
++#define MSDC_INTEN_CMDRDY       (0x1  << 8)     /* RW */
++#define MSDC_INTEN_CMDTMO       (0x1  << 9)     /* RW */
++#define MSDC_INTEN_RSPCRCERR    (0x1  << 10)    /* RW */
++#define MSDC_INTEN_CSTA         (0x1  << 11)    /* RW */
++#define MSDC_INTEN_XFER_COMPL   (0x1  << 12)    /* RW */
++#define MSDC_INTEN_DXFER_DONE   (0x1  << 13)    /* RW */
++#define MSDC_INTEN_DATTMO       (0x1  << 14)    /* RW */
++#define MSDC_INTEN_DATCRCERR    (0x1  << 15)    /* RW */
++#define MSDC_INTEN_ACMD19_DONE  (0x1  << 16)    /* RW */
++
++/* MSDC_FIFOCS mask */
++#define MSDC_FIFOCS_RXCNT       (0xff << 0)     /* R */
++#define MSDC_FIFOCS_TXCNT       (0xff << 16)    /* R */
++#define MSDC_FIFOCS_CLR         (0x1UL<< 31)    /* RW */
++
++/* SDC_CFG mask */
++#define SDC_CFG_SDIOINTWKUP     (0x1  << 0)     /* RW */
++#define SDC_CFG_INSWKUP         (0x1  << 1)     /* RW */
++#define SDC_CFG_BUSWIDTH        (0x3  << 16)    /* RW */
++#define SDC_CFG_SDIO            (0x1  << 19)    /* RW */
++#define SDC_CFG_SDIOIDE         (0x1  << 20)    /* RW */      
++#define SDC_CFG_INTATGAP        (0x1  << 21)    /* RW */
++#define SDC_CFG_DTOC            (0xffUL << 24)  /* RW */
++
++/* SDC_CMD mask */
++#define SDC_CMD_OPC             (0x3f << 0)     /* RW */
++#define SDC_CMD_BRK             (0x1  << 6)     /* RW */
++#define SDC_CMD_RSPTYP          (0x7  << 7)     /* RW */
++#define SDC_CMD_DTYP            (0x3  << 11)    /* RW */
++#define SDC_CMD_DTYP            (0x3  << 11)    /* RW */
++#define SDC_CMD_RW              (0x1  << 13)    /* RW */
++#define SDC_CMD_STOP            (0x1  << 14)    /* RW */
++#define SDC_CMD_GOIRQ           (0x1  << 15)    /* RW */
++#define SDC_CMD_BLKLEN          (0xfff<< 16)    /* RW */
++#define SDC_CMD_AUTOCMD         (0x3  << 28)    /* RW */
++#define SDC_CMD_VOLSWTH         (0x1  << 30)    /* RW */
++
++/* SDC_STS mask */
++#define SDC_STS_SDCBUSY         (0x1  << 0)     /* RW */
++#define SDC_STS_CMDBUSY         (0x1  << 1)     /* RW */
++#define SDC_STS_SWR_COMPL       (0x1  << 31)    /* RW */
++
++/* SDC_DCRC_STS mask */
++#define SDC_DCRC_STS_NEG        (0xf  << 8)     /* RO */
++#define SDC_DCRC_STS_POS        (0xff << 0)     /* RO */
++
++/* EMMC_CFG0 mask */
++#define EMMC_CFG0_BOOTSTART     (0x1  << 0)     /* W */
++#define EMMC_CFG0_BOOTSTOP      (0x1  << 1)     /* W */
++#define EMMC_CFG0_BOOTMODE      (0x1  << 2)     /* RW */
++#define EMMC_CFG0_BOOTACKDIS    (0x1  << 3)     /* RW */
++#define EMMC_CFG0_BOOTWDLY      (0x7  << 12)    /* RW */
++#define EMMC_CFG0_BOOTSUPP      (0x1  << 15)    /* RW */
++
++/* EMMC_CFG1 mask */
++#define EMMC_CFG1_BOOTDATTMC    (0xfffff << 0)  /* RW */
++#define EMMC_CFG1_BOOTACKTMC    (0xfffUL << 20) /* RW */
++
++/* EMMC_STS mask */
++#define EMMC_STS_BOOTCRCERR     (0x1  << 0)     /* W1C */
++#define EMMC_STS_BOOTACKERR     (0x1  << 1)     /* W1C */
++#define EMMC_STS_BOOTDATTMO     (0x1  << 2)     /* W1C */
++#define EMMC_STS_BOOTACKTMO     (0x1  << 3)     /* W1C */
++#define EMMC_STS_BOOTUPSTATE    (0x1  << 4)     /* R */
++#define EMMC_STS_BOOTACKRCV     (0x1  << 5)     /* W1C */
++#define EMMC_STS_BOOTDATRCV     (0x1  << 6)     /* R */
++
++/* EMMC_IOCON mask */
++#define EMMC_IOCON_BOOTRST      (0x1  << 0)     /* RW */
++
++/* SDC_ACMD19_TRG mask */
++#define SDC_ACMD19_TRG_TUNESEL  (0xf  << 0)     /* RW */
++
++/* MSDC_DMA_CTRL mask */
++#define MSDC_DMA_CTRL_START     (0x1  << 0)     /* W */
++#define MSDC_DMA_CTRL_STOP      (0x1  << 1)     /* W */
++#define MSDC_DMA_CTRL_RESUME    (0x1  << 2)     /* W */
++#define MSDC_DMA_CTRL_MODE      (0x1  << 8)     /* RW */
++#define MSDC_DMA_CTRL_LASTBUF   (0x1  << 10)    /* RW */
++#define MSDC_DMA_CTRL_BRUSTSZ   (0x7  << 12)    /* RW */
++#define MSDC_DMA_CTRL_XFERSZ    (0xffffUL << 16)/* RW */
++
++/* MSDC_DMA_CFG mask */
++#define MSDC_DMA_CFG_STS        (0x1  << 0)     /* R */
++#define MSDC_DMA_CFG_DECSEN     (0x1  << 1)     /* RW */
++#define MSDC_DMA_CFG_BDCSERR    (0x1  << 4)     /* R */
++#define MSDC_DMA_CFG_GPDCSERR   (0x1  << 5)     /* R */
++
++/* MSDC_PATCH_BIT mask */
++#define MSDC_PATCH_BIT_WFLSMODE (0x1  << 0)     /* RW */
++#define MSDC_PATCH_BIT_ODDSUPP  (0x1  << 1)     /* RW */
++#define MSDC_PATCH_BIT_CKGEN_CK (0x1  << 6)     /* E2: Fixed to 1 */
++#define MSDC_PATCH_BIT_IODSSEL  (0x1  << 16)    /* RW */
++#define MSDC_PATCH_BIT_IOINTSEL (0x1  << 17)    /* RW */
++#define MSDC_PATCH_BIT_BUSYDLY  (0xf  << 18)    /* RW */
++#define MSDC_PATCH_BIT_WDOD     (0xf  << 22)    /* RW */
++#define MSDC_PATCH_BIT_IDRTSEL  (0x1  << 26)    /* RW */
++#define MSDC_PATCH_BIT_CMDFSEL  (0x1  << 27)    /* RW */
++#define MSDC_PATCH_BIT_INTDLSEL (0x1  << 28)    /* RW */
++#define MSDC_PATCH_BIT_SPCPUSH  (0x1  << 29)    /* RW */
++#define MSDC_PATCH_BIT_DECRCTMO (0x1  << 30)    /* RW */
++
++/* MSDC_PATCH_BIT1 mask */
++#define MSDC_PATCH_BIT1_WRDAT_CRCS  (0x7 << 3)
++#define MSDC_PATCH_BIT1_CMD_RSP     (0x7 << 0)
++
++/* MSDC_PAD_CTL0 mask */
++#define MSDC_PAD_CTL0_CLKDRVN   (0x7  << 0)     /* RW */
++#define MSDC_PAD_CTL0_CLKDRVP   (0x7  << 4)     /* RW */
++#define MSDC_PAD_CTL0_CLKSR     (0x1  << 8)     /* RW */
++#define MSDC_PAD_CTL0_CLKPD     (0x1  << 16)    /* RW */
++#define MSDC_PAD_CTL0_CLKPU     (0x1  << 17)    /* RW */
++#define MSDC_PAD_CTL0_CLKSMT    (0x1  << 18)    /* RW */
++#define MSDC_PAD_CTL0_CLKIES    (0x1  << 19)    /* RW */
++#define MSDC_PAD_CTL0_CLKTDSEL  (0xf  << 20)    /* RW */
++#define MSDC_PAD_CTL0_CLKRDSEL  (0xffUL<< 24)   /* RW */
++
++/* MSDC_PAD_CTL1 mask */
++#define MSDC_PAD_CTL1_CMDDRVN   (0x7  << 0)     /* RW */
++#define MSDC_PAD_CTL1_CMDDRVP   (0x7  << 4)     /* RW */
++#define MSDC_PAD_CTL1_CMDSR     (0x1  << 8)     /* RW */
++#define MSDC_PAD_CTL1_CMDPD     (0x1  << 16)    /* RW */
++#define MSDC_PAD_CTL1_CMDPU     (0x1  << 17)    /* RW */
++#define MSDC_PAD_CTL1_CMDSMT    (0x1  << 18)    /* RW */
++#define MSDC_PAD_CTL1_CMDIES    (0x1  << 19)    /* RW */
++#define MSDC_PAD_CTL1_CMDTDSEL  (0xf  << 20)    /* RW */
++#define MSDC_PAD_CTL1_CMDRDSEL  (0xffUL<< 24)   /* RW */
++
++/* MSDC_PAD_CTL2 mask */
++#define MSDC_PAD_CTL2_DATDRVN   (0x7  << 0)     /* RW */
++#define MSDC_PAD_CTL2_DATDRVP   (0x7  << 4)     /* RW */
++#define MSDC_PAD_CTL2_DATSR     (0x1  << 8)     /* RW */
++#define MSDC_PAD_CTL2_DATPD     (0x1  << 16)    /* RW */
++#define MSDC_PAD_CTL2_DATPU     (0x1  << 17)    /* RW */
++#define MSDC_PAD_CTL2_DATIES    (0x1  << 19)    /* RW */
++#define MSDC_PAD_CTL2_DATSMT    (0x1  << 18)    /* RW */
++#define MSDC_PAD_CTL2_DATTDSEL  (0xf  << 20)    /* RW */
++#define MSDC_PAD_CTL2_DATRDSEL  (0xffUL<< 24)   /* RW */
++
++/* MSDC_PAD_TUNE mask */
++#define MSDC_PAD_TUNE_DATWRDLY  (0x1F << 0)     /* RW */
++#define MSDC_PAD_TUNE_DATRRDLY  (0x1F << 8)     /* RW */
++#define MSDC_PAD_TUNE_CMDRDLY   (0x1F << 16)    /* RW */
++#define MSDC_PAD_TUNE_CMDRRDLY  (0x1FUL << 22)  /* RW */
++#define MSDC_PAD_TUNE_CLKTXDLY  (0x1FUL << 27)  /* RW */
++
++/* MSDC_DAT_RDDLY0/1 mask */
++#define MSDC_DAT_RDDLY0_D0      (0x1F << 0)     /* RW */
++#define MSDC_DAT_RDDLY0_D1      (0x1F << 8)     /* RW */
++#define MSDC_DAT_RDDLY0_D2      (0x1F << 16)    /* RW */
++#define MSDC_DAT_RDDLY0_D3      (0x1F << 24)    /* RW */
++
++#define MSDC_DAT_RDDLY1_D4      (0x1F << 0)     /* RW */
++#define MSDC_DAT_RDDLY1_D5      (0x1F << 8)     /* RW */
++#define MSDC_DAT_RDDLY1_D6      (0x1F << 16)    /* RW */
++#define MSDC_DAT_RDDLY1_D7      (0x1F << 24)    /* RW */
++
++#define MSDC_CKGEN_MSDC_DLY_SEL   (0x1F<<10)
++#define MSDC_INT_DAT_LATCH_CK_SEL  (0x7<<7)
++#define MSDC_CKGEN_MSDC_CK_SEL     (0x1<<6)
++#define CARD_READY_FOR_DATA             (1<<8)
++#define CARD_CURRENT_STATE(x)           ((x&0x00001E00)>>9)
++
++/*--------------------------------------------------------------------------*/
++/* Descriptor Structure                                                     */
++/*--------------------------------------------------------------------------*/
++typedef struct {
++    u32  hwo:1; /* could be changed by hw */
++    u32  bdp:1;
++    u32  rsv0:6;
++    u32  chksum:8;
++    u32  intr:1;
++    u32  rsv1:15;
++    void *next;
++    void *ptr;
++    u32  buflen:16;
++    u32  extlen:8;
++    u32  rsv2:8;
++    u32  arg;
++    u32  blknum;
++    u32  cmd;
++} gpd_t;
++
++typedef struct {
++    u32  eol:1;
++    u32  rsv0:7;
++    u32  chksum:8;
++    u32  rsv1:1;
++    u32  blkpad:1;
++    u32  dwpad:1;
++    u32  rsv2:13;
++    void *next;
++    void *ptr;
++    u32  buflen:16;
++    u32  rsv3:16;
++} bd_t;
++
++/*--------------------------------------------------------------------------*/
++/* Register Debugging Structure                                             */
++/*--------------------------------------------------------------------------*/
++
++typedef struct {
++    u32 msdc:1;
++    u32 ckpwn:1;
++    u32 rst:1;
++    u32 pio:1;
++    u32 ckdrven:1;
++    u32 start18v:1;
++    u32 pass18v:1;
++    u32 ckstb:1;
++    u32 ckdiv:8;
++    u32 ckmod:2;
++    u32 pad:14;		
++} msdc_cfg_reg;
++typedef struct {
++    u32 sdr104cksel:1;
++    u32 rsmpl:1;
++    u32 dsmpl:1;
++    u32 ddlysel:1;
++    u32 ddr50ckd:1;
++    u32 dsplsel:1;
++    u32 pad1:10;
++    u32 d0spl:1;
++    u32 d1spl:1;
++    u32 d2spl:1;
++    u32 d3spl:1;
++    u32 d4spl:1;
++    u32 d5spl:1;
++    u32 d6spl:1;
++    u32 d7spl:1;
++    u32 riscsz:1;
++    u32 pad2:7;
++} msdc_iocon_reg;
++typedef struct {
++    u32 cden:1;
++    u32 cdsts:1;
++    u32 pad1:10;
++    u32 cddebounce:4;
++    u32 dat:8;
++    u32 cmd:1;
++    u32 pad2:6;
++    u32 wp:1;
++} msdc_ps_reg;
++typedef struct {
++    u32 mmcirq:1;
++    u32 cdsc:1;
++    u32 pad1:1;
++    u32 atocmdrdy:1;
++    u32 atocmdtmo:1;
++    u32 atocmdcrc:1;
++    u32 dmaqempty:1;
++    u32 sdioirq:1;
++    u32 cmdrdy:1;
++    u32 cmdtmo:1;
++    u32 rspcrc:1;
++    u32 csta:1;
++    u32 xfercomp:1;
++    u32 dxferdone:1;
++    u32 dattmo:1;
++    u32 datcrc:1;
++    u32 atocmd19done:1;
++    u32 pad2:15;
++} msdc_int_reg;
++typedef struct {
++    u32 mmcirq:1;
++    u32 cdsc:1;
++    u32 pad1:1;
++    u32 atocmdrdy:1;
++    u32 atocmdtmo:1;
++    u32 atocmdcrc:1;
++    u32 dmaqempty:1;
++    u32 sdioirq:1;
++    u32 cmdrdy:1;
++    u32 cmdtmo:1;
++    u32 rspcrc:1;
++    u32 csta:1;
++    u32 xfercomp:1;
++    u32 dxferdone:1;
++    u32 dattmo:1;
++    u32 datcrc:1;
++    u32 atocmd19done:1;
++    u32 pad2:15;
++} msdc_inten_reg;
++typedef struct {
++    u32 rxcnt:8;
++    u32 pad1:8;
++    u32 txcnt:8;
++    u32 pad2:7;
++    u32 clr:1;
++} msdc_fifocs_reg;
++typedef struct {
++    u32 val;
++} msdc_txdat_reg;
++typedef struct {
++    u32 val;
++} msdc_rxdat_reg;
++typedef struct {
++    u32 sdiowkup:1;
++    u32 inswkup:1;
++    u32 pad1:14;
++    u32 buswidth:2;
++    u32 pad2:1;
++    u32 sdio:1;
++    u32 sdioide:1;
++    u32 intblkgap:1;
++    u32 pad4:2;
++    u32 dtoc:8;
++} sdc_cfg_reg;
++typedef struct {
++    u32 cmd:6;
++    u32 brk:1;
++    u32 rsptyp:3;
++    u32 pad1:1;
++    u32 dtype:2;
++    u32 rw:1;
++    u32 stop:1;
++    u32 goirq:1;    
++    u32 blklen:12;
++    u32 atocmd:2;
++    u32 volswth:1;
++    u32 pad2:1;
++} sdc_cmd_reg;
++typedef struct {
++    u32 arg;
++} sdc_arg_reg;
++typedef struct {
++    u32 sdcbusy:1;
++    u32 cmdbusy:1;
++    u32 pad:29;
++    u32 swrcmpl:1;
++} sdc_sts_reg;
++typedef struct {
++    u32 val;
++} sdc_resp0_reg;
++typedef struct {
++    u32 val;	
++} sdc_resp1_reg;
++typedef struct {
++    u32 val;	
++} sdc_resp2_reg;
++typedef struct {
++    u32 val;	
++} sdc_resp3_reg;
++typedef struct {
++    u32 num;	
++} sdc_blknum_reg;
++typedef struct {
++    u32 sts;
++} sdc_csts_reg;
++typedef struct {
++    u32 sts;
++} sdc_cstsen_reg;
++typedef struct {
++    u32 datcrcsts:8;
++    u32 ddrcrcsts:4;
++    u32 pad:20;
++} sdc_datcrcsts_reg;
++typedef struct {
++    u32 bootstart:1;
++    u32 bootstop:1;
++    u32 bootmode:1;
++    u32 pad1:9;
++    u32 bootwaidly:3;
++    u32 bootsupp:1;
++    u32 pad2:16;
++} emmc_cfg0_reg;
++typedef struct {
++    u32 bootcrctmc:16;
++    u32 pad:4;
++    u32 bootacktmc:12;
++} emmc_cfg1_reg;
++typedef struct {
++    u32 bootcrcerr:1;
++    u32 bootackerr:1;
++    u32 bootdattmo:1;
++    u32 bootacktmo:1;
++    u32 bootupstate:1;
++    u32 bootackrcv:1;
++    u32 bootdatrcv:1;
++    u32 pad:25;
++} emmc_sts_reg;
++typedef struct {
++    u32 bootrst:1;
++    u32 pad:31;
++} emmc_iocon_reg;
++typedef struct {
++    u32 val;
++} msdc_acmd_resp_reg;
++typedef struct {
++    u32 tunesel:4;
++    u32 pad:28;
++} msdc_acmd19_trg_reg;
++typedef struct {
++    u32 val;
++} msdc_acmd19_sts_reg;
++typedef struct {
++    u32 addr;
++} msdc_dma_sa_reg;
++typedef struct {
++    u32 addr;
++} msdc_dma_ca_reg;
++typedef struct {
++    u32 start:1;
++    u32 stop:1;
++    u32 resume:1;
++    u32 pad1:5;
++    u32 mode:1;
++    u32 pad2:1;
++    u32 lastbuf:1;
++    u32 pad3:1;
++    u32 brustsz:3;
++    u32 pad4:1;
++    u32 xfersz:16;
++} msdc_dma_ctrl_reg;
++typedef struct {
++    u32 status:1;
++    u32 decsen:1;
++    u32 pad1:2;
++    u32 bdcsen:1;
++    u32 gpdcsen:1;
++    u32 pad2:26;
++} msdc_dma_cfg_reg;
++typedef struct {
++    u32 sel:16;
++    u32 pad2:16;
++} msdc_dbg_sel_reg;
++typedef struct {
++    u32 val;
++} msdc_dbg_out_reg;
++typedef struct {
++    u32 clkdrvn:3;
++    u32 rsv0:1;
++    u32 clkdrvp:3;
++    u32 rsv1:1;
++    u32 clksr:1;
++    u32 rsv2:7;
++    u32 clkpd:1;    
++    u32 clkpu:1;
++    u32 clksmt:1;
++    u32 clkies:1;
++    u32 clktdsel:4;
++    u32 clkrdsel:8;
++} msdc_pad_ctl0_reg;
++typedef struct {
++    u32 cmddrvn:3;
++    u32 rsv0:1;    
++    u32 cmddrvp:3;
++    u32 rsv1:1;
++    u32 cmdsr:1;
++    u32 rsv2:7;
++    u32 cmdpd:1;    
++    u32 cmdpu:1;
++    u32 cmdsmt:1;
++    u32 cmdies:1;
++    u32 cmdtdsel:4;
++    u32 cmdrdsel:8;
++} msdc_pad_ctl1_reg;
++typedef struct {
++    u32 datdrvn:3;
++    u32 rsv0:1;
++    u32 datdrvp:3;
++    u32 rsv1:1;
++    u32 datsr:1;
++    u32 rsv2:7;
++    u32 datpd:1;    
++    u32 datpu:1;
++    u32 datsmt:1;
++    u32 daties:1;
++    u32 dattdsel:4;
++    u32 datrdsel:8;
++} msdc_pad_ctl2_reg;
++typedef struct {
++    u32 wrrxdly:3;
++    u32 pad1:5;
++    u32 rdrxdly:8;
++    u32 pad2:16;
++} msdc_pad_tune_reg;
++typedef struct {
++    u32 dat0:5;
++    u32 rsv0:3;
++    u32 dat1:5;
++    u32 rsv1:3;
++    u32 dat2:5;
++    u32 rsv2:3;
++    u32 dat3:5;
++    u32 rsv3:3;    
++} msdc_dat_rddly0;
++typedef struct {
++    u32 dat4:5;
++    u32 rsv4:3;
++    u32 dat5:5;
++    u32 rsv5:3;
++    u32 dat6:5;
++    u32 rsv6:3;
++    u32 dat7:5;
++    u32 rsv7:3;
++} msdc_dat_rddly1;
++typedef struct {
++    u32 dbg0sel:8;
++    u32 dbg1sel:6;
++    u32 pad1:2;
++    u32 dbg2sel:6;
++    u32 pad2:2;
++    u32 dbg3sel:6;
++    u32 pad3:2;
++} msdc_hw_dbg_reg;
++typedef struct {
++    u32 val;
++} msdc_version_reg;
++typedef struct {
++    u32 val;
++} msdc_eco_ver_reg;
++
++struct msdc_regs {
++    msdc_cfg_reg        msdc_cfg;      /* base+0x00h */
++    msdc_iocon_reg      msdc_iocon;    /* base+0x04h */
++    msdc_ps_reg         msdc_ps;       /* base+0x08h */
++    msdc_int_reg        msdc_int;      /* base+0x0ch */
++    msdc_inten_reg      msdc_inten;    /* base+0x10h */
++    msdc_fifocs_reg     msdc_fifocs;   /* base+0x14h */
++    msdc_txdat_reg      msdc_txdat;    /* base+0x18h */
++    msdc_rxdat_reg      msdc_rxdat;    /* base+0x1ch */
++    u32                 rsv1[4];
++    sdc_cfg_reg         sdc_cfg;       /* base+0x30h */
++    sdc_cmd_reg         sdc_cmd;       /* base+0x34h */
++    sdc_arg_reg         sdc_arg;       /* base+0x38h */
++    sdc_sts_reg         sdc_sts;       /* base+0x3ch */
++    sdc_resp0_reg       sdc_resp0;     /* base+0x40h */
++    sdc_resp1_reg       sdc_resp1;     /* base+0x44h */
++    sdc_resp2_reg       sdc_resp2;     /* base+0x48h */
++    sdc_resp3_reg       sdc_resp3;     /* base+0x4ch */
++    sdc_blknum_reg      sdc_blknum;    /* base+0x50h */
++    u32                 rsv2[1];
++    sdc_csts_reg        sdc_csts;      /* base+0x58h */
++    sdc_cstsen_reg      sdc_cstsen;    /* base+0x5ch */
++    sdc_datcrcsts_reg   sdc_dcrcsta;   /* base+0x60h */
++    u32                 rsv3[3];
++    emmc_cfg0_reg       emmc_cfg0;     /* base+0x70h */
++    emmc_cfg1_reg       emmc_cfg1;     /* base+0x74h */
++    emmc_sts_reg        emmc_sts;      /* base+0x78h */
++    emmc_iocon_reg      emmc_iocon;    /* base+0x7ch */
++    msdc_acmd_resp_reg  acmd_resp;     /* base+0x80h */
++    msdc_acmd19_trg_reg acmd19_trg;    /* base+0x84h */
++    msdc_acmd19_sts_reg acmd19_sts;    /* base+0x88h */
++    u32                 rsv4[1];
++    msdc_dma_sa_reg     dma_sa;        /* base+0x90h */
++    msdc_dma_ca_reg     dma_ca;        /* base+0x94h */
++    msdc_dma_ctrl_reg   dma_ctrl;      /* base+0x98h */
++    msdc_dma_cfg_reg    dma_cfg;       /* base+0x9ch */
++    msdc_dbg_sel_reg    dbg_sel;       /* base+0xa0h */
++    msdc_dbg_out_reg    dbg_out;       /* base+0xa4h */
++    u32                 rsv5[2];
++    u32                 patch0;        /* base+0xb0h */
++    u32                 patch1;        /* base+0xb4h */
++    u32                 rsv6[10];
++    msdc_pad_ctl0_reg   pad_ctl0;      /* base+0xe0h */
++    msdc_pad_ctl1_reg   pad_ctl1;      /* base+0xe4h */
++    msdc_pad_ctl2_reg   pad_ctl2;      /* base+0xe8h */
++    msdc_pad_tune_reg   pad_tune;      /* base+0xech */
++    msdc_dat_rddly0     dat_rddly0;    /* base+0xf0h */
++    msdc_dat_rddly1     dat_rddly1;    /* base+0xf4h */
++    msdc_hw_dbg_reg     hw_dbg;        /* base+0xf8h */
++    u32                 rsv7[1];       
++    msdc_version_reg    version;       /* base+0x100h */
++    msdc_eco_ver_reg    eco_ver;       /* base+0x104h */
++};
++
++struct scatterlist_ex {
++    u32 cmd;
++    u32 arg;
++    u32 sglen;
++    struct scatterlist *sg;
++};
++
++#define DMA_FLAG_NONE       (0x00000000)
++#define DMA_FLAG_EN_CHKSUM  (0x00000001)
++#define DMA_FLAG_PAD_BLOCK  (0x00000002)
++#define DMA_FLAG_PAD_DWORD  (0x00000004)
++
++struct msdc_dma {
++    u32 flags;                   /* flags */
++    u32 xfersz;                  /* xfer size in bytes */
++    u32 sglen;                   /* size of scatter list */
++    u32 blklen;                  /* block size */
++    struct scatterlist *sg;      /* I/O scatter list */
++    struct scatterlist_ex *esg;  /* extended I/O scatter list */
++    u8  mode;                    /* dma mode        */
++    u8  burstsz;                 /* burst size      */
++    u8  intr;                    /* dma done interrupt */
++    u8  padding;                 /* padding */
++    u32 cmd;                     /* enhanced mode command */
++    u32 arg;                     /* enhanced mode arg */
++    u32 rsp;                     /* enhanced mode command response */
++    u32 autorsp;                 /* auto command response */
++
++    gpd_t *gpd;                  /* pointer to gpd array */
++    bd_t  *bd;                   /* pointer to bd array */
++    dma_addr_t gpd_addr;         /* the physical address of gpd array */
++    dma_addr_t bd_addr;          /* the physical address of bd array */
++    u32 used_gpd;                /* the number of used gpd elements */
++    u32 used_bd;                 /* the number of used bd elements */
++};
++
++struct msdc_host
++{
++    struct msdc_hw              *hw;
++
++    struct mmc_host             *mmc;           /* mmc structure */
++    struct mmc_command          *cmd;
++    struct mmc_data             *data;
++    struct mmc_request          *mrq; 
++    int                         cmd_rsp;
++    int                         cmd_rsp_done;
++    int                         cmd_r1b_done;
++
++    int                         error; 
++    spinlock_t                  lock;           /* mutex */
++    struct semaphore            sem; 
++
++    u32                         blksz;          /* host block size */
++    u32                         base;           /* host base address */    
++    int                         id;             /* host id */
++    int                         pwr_ref;        /* core power reference count */
++
++    u32                         xfer_size;      /* total transferred size */
++
++    struct msdc_dma             dma;            /* dma channel */
++    u32                         dma_addr;       /* dma transfer address */
++    u32                         dma_left_size;  /* dma transfer left size */
++    u32                         dma_xfer_size;  /* dma transfer size in bytes */
++    int                         dma_xfer;       /* dma transfer mode */
++
++    u32                         timeout_ns;     /* data timeout ns */
++    u32                         timeout_clks;   /* data timeout clks */
++
++    atomic_t                    abort;          /* abort transfer */
++
++    int                         irq;            /* host interrupt */
++
++    struct tasklet_struct       card_tasklet;
++#if 0
++    struct work_struct  	card_workqueue;
++#else
++    struct delayed_work  	card_delaywork;
++#endif
++
++    struct completion           cmd_done;
++    struct completion           xfer_done;
++    struct pm_message           pm_state;
++
++    u32                         mclk;           /* mmc subsystem clock */
++    u32                         hclk;           /* host clock speed */		
++    u32                         sclk;           /* SD/MS clock speed */
++    u8                          core_clkon;     /* Host core clock on ? */
++    u8                          card_clkon;     /* Card clock on ? */
++    u8                          core_power;     /* core power */    
++    u8                          power_mode;     /* host power mode */
++    u8                          card_inserted;  /* card inserted ? */
++    u8                          suspend;        /* host suspended ? */    
++    u8                          reserved;
++    u8                          app_cmd;        /* for app command */     
++    u32                         app_cmd_arg;    
++    u64                         starttime;
++};
++
++static inline unsigned int uffs(unsigned int x)
++{
++    unsigned int r = 1;
++
++    if (!x)
++        return 0;
++    if (!(x & 0xffff)) {
++        x >>= 16;
++        r += 16;
++    }
++    if (!(x & 0xff)) {
++        x >>= 8;
++        r += 8;
++    }
++    if (!(x & 0xf)) {
++        x >>= 4;
++        r += 4;
++    }
++    if (!(x & 3)) {
++        x >>= 2;
++        r += 2;
++    }
++    if (!(x & 1)) {
++        x >>= 1;
++        r += 1;
++    }
++    return r;
++}
++#define sdr_read8(reg)           __raw_readb(reg)
++#define sdr_read16(reg)          __raw_readw(reg)
++#define sdr_read32(reg)          __raw_readl(reg)
++#define sdr_write8(reg,val)      __raw_writeb(val,reg)
++#define sdr_write16(reg,val)     __raw_writew(val,reg)
++#define sdr_write32(reg,val)     __raw_writel(val,reg)
++
++#define sdr_set_bits(reg,bs)     ((*(volatile u32*)(reg)) |= (u32)(bs))
++#define sdr_clr_bits(reg,bs)     ((*(volatile u32*)(reg)) &= ~((u32)(bs)))
++
++#define sdr_set_field(reg,field,val) \
++    do {	\
++        volatile unsigned int tv = sdr_read32(reg);	\
++        tv &= ~(field); \
++        tv |= ((val) << (uffs((unsigned int)field) - 1)); \
++        sdr_write32(reg,tv); \
++    } while(0)
++#define sdr_get_field(reg,field,val) \
++    do {	\
++        volatile unsigned int tv = sdr_read32(reg);	\
++        val = ((tv & (field)) >> (uffs((unsigned int)field) - 1)); \
++    } while(0)
++
++#endif
++
+--- /dev/null
++++ b/drivers/mmc/host/mtk-mmc/sd.c
+@@ -0,0 +1,3060 @@
++/* Copyright Statement:
++ *
++ * This software/firmware and related documentation ("MediaTek Software") are
++ * protected under relevant copyright laws. The information contained herein
++ * is confidential and proprietary to MediaTek Inc. and/or its licensors.
++ * Without the prior written permission of MediaTek inc. and/or its licensors,
++ * any reproduction, modification, use or disclosure of MediaTek Software,
++ * and information contained herein, in whole or in part, shall be strictly prohibited.
++ *
++ * MediaTek Inc. (C) 2010. All rights reserved.
++ *
++ * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
++ * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
++ * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
++ * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
++ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
++ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
++ * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
++ * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
++ * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
++ * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
++ * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
++ * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
++ * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
++ * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
++ * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
++ * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
++ * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
++ * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
++ *
++ * The following software/firmware and/or related documentation ("MediaTek Software")
++ * have been modified by MediaTek Inc. All revisions are subject to any receiver's
++ * applicable license agreements with MediaTek Inc.
++ */
++
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/init.h>
++#include <linux/spinlock.h>
++#include <linux/timer.h>
++#include <linux/ioport.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/interrupt.h>
++#include <linux/delay.h>
++#include <linux/blkdev.h>
++#include <linux/slab.h>
++#include <linux/mmc/host.h>
++#include <linux/mmc/card.h>
++#include <linux/mmc/core.h>
++#include <linux/mmc/mmc.h>
++#include <linux/mmc/sd.h>
++#include <linux/mmc/sdio.h>
++#include <linux/dma-mapping.h>
++
++/* +++ by chhung */
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/version.h>
++#include <linux/pm.h>
++#include <linux/of.h>
++
++#define MSDC_SMPL_FALLING   (1)
++#define MSDC_CD_PIN_EN      (1 << 0)  /* card detection pin is wired   */
++#define MSDC_WP_PIN_EN      (1 << 1)  /* write protection pin is wired */
++#define MSDC_REMOVABLE      (1 << 5)  /* removable slot                */
++#define MSDC_SYS_SUSPEND    (1 << 6)  /* suspended by system           */
++#define MSDC_HIGHSPEED      (1 << 7)
++
++//#define IRQ_SDC 14	//MT7620 /*FIXME*/
++#ifdef CONFIG_SOC_MT7621
++#define RALINK_SYSCTL_BASE		0xbe000000
++#define RALINK_MSDC_BASE		0xbe130000
++#else
++#define RALINK_SYSCTL_BASE		0xb0000000
++#define RALINK_MSDC_BASE		0xb0130000
++#endif
++#define IRQ_SDC			22	/*FIXME*/
++
++#include <asm/dma.h>
++/* end of +++ */
++
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#if 0 /* --- by chhung */
++#include <mach/board.h>
++#include <mach/mt6575_devs.h>
++#include <mach/mt6575_typedefs.h>
++#include <mach/mt6575_clock_manager.h>
++#include <mach/mt6575_pm_ldo.h>
++//#include <mach/mt6575_pll.h>
++//#include <mach/mt6575_gpio.h>
++//#include <mach/mt6575_gpt_sw.h>
++#include <asm/tcm.h>
++// #include <mach/mt6575_gpt.h>
++#endif /* end of --- */
++
++#include "mt6575_sd.h"
++#include "dbg.h"
++
++/* +++ by chhung */
++#include "board.h"
++/* end of +++ */
++
++#if 0 /* --- by chhung */
++#define isb() __asm__ __volatile__ ("" : : : "memory")
++#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \
++				    : : "r" (0) : "memory")
++#define dmb() __asm__ __volatile__ ("" : : : "memory")
++#endif /* end of --- */
++
++#define DRV_NAME            "mtk-sd"
++
++#define HOST_MAX_NUM        (1) /* +/- by chhung */
++
++#if defined (CONFIG_SOC_MT7620)
++#define HOST_MAX_MCLK       (48000000) /* +/- by chhung */
++#elif defined (CONFIG_SOC_MT7621)
++#define HOST_MAX_MCLK       (50000000) /* +/- by chhung */
++#endif
++#define HOST_MIN_MCLK       (260000)
++
++#define HOST_MAX_BLKSZ      (2048)
++
++#define MSDC_OCR_AVAIL      (MMC_VDD_28_29 | MMC_VDD_29_30 | MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33)
++
++#define GPIO_PULL_DOWN      (0)
++#define GPIO_PULL_UP        (1)
++
++#if 0 /* --- by chhung */
++#define MSDC_CLKSRC_REG     (0xf100000C)
++#define PDN_REG           (0xF1000010) 
++#endif /* end of --- */
++
++#define DEFAULT_DEBOUNCE    (8)       /* 8 cycles */
++#define DEFAULT_DTOC        (40)      /* data timeout counter. 65536x40 sclk. */
++
++#define CMD_TIMEOUT         (HZ/10)     /* 100ms */
++#define DAT_TIMEOUT         (HZ/2 * 5)  /* 500ms x5 */
++
++#define MAX_DMA_CNT         (64 * 1024 - 512)   /* a single transaction for WIFI may be 50K*/
++
++#define MAX_GPD_NUM         (1 + 1)  /* one null gpd */
++#define MAX_BD_NUM          (1024)
++#define MAX_BD_PER_GPD      (MAX_BD_NUM)
++
++#define MAX_HW_SGMTS        (MAX_BD_NUM)
++#define MAX_PHY_SGMTS       (MAX_BD_NUM)
++#define MAX_SGMT_SZ         (MAX_DMA_CNT)
++#define MAX_REQ_SZ          (MAX_SGMT_SZ * 8)  
++
++#ifdef MT6575_SD_DEBUG
++static struct msdc_regs *msdc_reg[HOST_MAX_NUM];
++#endif 
++
++static int mtk_sw_poll;
++
++static int cd_active_low = 1;
++
++//=================================
++#define PERI_MSDC0_PDN      (15)
++//#define PERI_MSDC1_PDN    (16)
++//#define PERI_MSDC2_PDN    (17)
++//#define PERI_MSDC3_PDN    (18)
++
++struct msdc_host *msdc_6575_host[] = {NULL,NULL,NULL,NULL};
++#if 0 /* --- by chhung */
++/* gate means clock power down */
++static int g_clk_gate = 0; 
++#define msdc_gate_clock(id) \
++    do { \
++        g_clk_gate &= ~(1 << ((id) + PERI_MSDC0_PDN)); \
++    } while(0)
++/* not like power down register. 1 means clock on. */
++#define msdc_ungate_clock(id) \
++    do { \
++        g_clk_gate |= 1 << ((id) + PERI_MSDC0_PDN); \
++    } while(0)
++
++// do we need sync object or not 
++void msdc_clk_status(int * status)
++{
++    *status = g_clk_gate;    	
++}
++#endif /* end of --- */
++
++/* +++ by chhung */
++struct msdc_hw msdc0_hw = {
++	.clk_src        = 0,
++	.cmd_edge       = MSDC_SMPL_FALLING,
++	.data_edge      = MSDC_SMPL_FALLING,
++	.clk_drv        = 4,
++	.cmd_drv        = 4,
++	.dat_drv        = 4,
++	.data_pins      = 4,
++	.data_offset    = 0,
++	.flags          = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED,
++//	.flags          = MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE,
++};
++
++static struct resource mtk_sd_resources[] = {
++	[0] = {
++		.start  = RALINK_MSDC_BASE,
++		.end    = RALINK_MSDC_BASE+0x3fff,
++		.flags  = IORESOURCE_MEM,
++	},
++	[1] = {
++		.start  = IRQ_SDC,	/*FIXME*/
++		.end    = IRQ_SDC,	/*FIXME*/
++		.flags  = IORESOURCE_IRQ,
++	},
++};
++
++static struct platform_device mtk_sd_device = {
++	.name           = "mtk-sd",
++	.id             = 0,
++	.num_resources  = ARRAY_SIZE(mtk_sd_resources),
++	.resource       = mtk_sd_resources,
++};
++/* end of +++ */
++
++static int msdc_rsp[] = {
++    0,  /* RESP_NONE */
++    1,  /* RESP_R1 */
++    2,  /* RESP_R2 */
++    3,  /* RESP_R3 */
++    4,  /* RESP_R4 */
++    1,  /* RESP_R5 */
++    1,  /* RESP_R6 */
++    1,  /* RESP_R7 */
++    7,  /* RESP_R1b */
++};
++
++/* For Inhanced DMA */
++#define msdc_init_gpd_ex(gpd,extlen,cmd,arg,blknum) \
++    do { \
++        ((gpd_t*)gpd)->extlen = extlen; \
++        ((gpd_t*)gpd)->cmd    = cmd; \
++        ((gpd_t*)gpd)->arg    = arg; \
++        ((gpd_t*)gpd)->blknum = blknum; \
++    }while(0)
++    
++#define msdc_init_bd(bd, blkpad, dwpad, dptr, dlen) \
++    do { \
++        BUG_ON(dlen > 0xFFFFUL); \
++        ((bd_t*)bd)->blkpad = blkpad; \
++        ((bd_t*)bd)->dwpad  = dwpad; \
++        ((bd_t*)bd)->ptr    = (void*)dptr; \
++        ((bd_t*)bd)->buflen = dlen; \
++    }while(0)
++
++#define msdc_txfifocnt()   ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_TXCNT) >> 16)
++#define msdc_rxfifocnt()   ((sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_RXCNT) >> 0)
++#define msdc_fifo_write32(v)   sdr_write32(MSDC_TXDATA, (v))
++#define msdc_fifo_write8(v)    sdr_write8(MSDC_TXDATA, (v))
++#define msdc_fifo_read32()   sdr_read32(MSDC_RXDATA)
++#define msdc_fifo_read8()    sdr_read8(MSDC_RXDATA)	
++
++
++#define msdc_dma_on()        sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO)
++#define msdc_dma_off()       sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO)
++
++#define msdc_retry(expr,retry,cnt) \
++    do { \
++        int backup = cnt; \
++        while (retry) { \
++            if (!(expr)) break; \
++            if (cnt-- == 0) { \
++                retry--; mdelay(1); cnt = backup; \
++            } \
++        } \
++        WARN_ON(retry == 0); \
++    } while(0)
++
++#if 0 /* --- by chhung */
++#define msdc_reset() \
++    do { \
++        int retry = 3, cnt = 1000; \
++        sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
++        dsb(); \
++        msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
++    } while(0)
++#else
++#define msdc_reset() \
++    do { \
++        int retry = 3, cnt = 1000; \
++        sdr_set_bits(MSDC_CFG, MSDC_CFG_RST); \
++        msdc_retry(sdr_read32(MSDC_CFG) & MSDC_CFG_RST, retry, cnt); \
++    } while(0)
++#endif /* end of +/- */
++
++#define msdc_clr_int() \
++    do { \
++        volatile u32 val = sdr_read32(MSDC_INT); \
++        sdr_write32(MSDC_INT, val); \
++    } while(0)
++
++#define msdc_clr_fifo() \
++    do { \
++        int retry = 3, cnt = 1000; \
++        sdr_set_bits(MSDC_FIFOCS, MSDC_FIFOCS_CLR); \
++        msdc_retry(sdr_read32(MSDC_FIFOCS) & MSDC_FIFOCS_CLR, retry, cnt); \
++    } while(0)
++
++#define msdc_irq_save(val) \
++    do { \
++        val = sdr_read32(MSDC_INTEN); \
++        sdr_clr_bits(MSDC_INTEN, val); \
++    } while(0)
++	
++#define msdc_irq_restore(val) \
++    do { \
++        sdr_set_bits(MSDC_INTEN, val); \
++    } while(0)
++
++/* clock source for host: global */
++#if defined (CONFIG_SOC_MT7620)
++static u32 hclks[] = {48000000}; /* +/- by chhung */
++#elif defined (CONFIG_SOC_MT7621)
++static u32 hclks[] = {50000000}; /* +/- by chhung */
++#endif
++
++//============================================
++// the power for msdc host controller: global
++//    always keep the VMC on. 
++//============================================
++#define msdc_vcore_on(host) \
++    do { \
++        INIT_MSG("[+]VMC ref. count<%d>", ++host->pwr_ref); \
++        (void)hwPowerOn(MT65XX_POWER_LDO_VMC, VOL_3300, "SD"); \
++    } while (0)
++#define msdc_vcore_off(host) \
++    do { \
++        INIT_MSG("[-]VMC ref. count<%d>", --host->pwr_ref); \
++        (void)hwPowerDown(MT65XX_POWER_LDO_VMC, "SD"); \
++    } while (0)
++
++//====================================
++// the vdd output for card: global 
++//   always keep the VMCH on. 
++//==================================== 
++#define msdc_vdd_on(host) \
++    do { \
++        (void)hwPowerOn(MT65XX_POWER_LDO_VMCH, VOL_3300, "SD"); \
++    } while (0)   
++#define msdc_vdd_off(host) \
++    do { \
++        (void)hwPowerDown(MT65XX_POWER_LDO_VMCH, "SD"); \
++    } while (0)      
++
++#define sdc_is_busy()          (sdr_read32(SDC_STS) & SDC_STS_SDCBUSY)
++#define sdc_is_cmd_busy()      (sdr_read32(SDC_STS) & SDC_STS_CMDBUSY)
++
++#define sdc_send_cmd(cmd,arg) \
++    do { \
++        sdr_write32(SDC_ARG, (arg)); \
++        sdr_write32(SDC_CMD, (cmd)); \
++    } while(0)
++
++// can modify to read h/w register.
++//#define is_card_present(h)   ((sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1);
++#define is_card_present(h)     (((struct msdc_host*)(h))->card_inserted)
++
++/* +++ by chhung */
++#ifndef __ASSEMBLY__
++#define PHYSADDR(a)             (((unsigned long)(a)) & 0x1fffffff)
++#else
++#define PHYSADDR(a)             ((a) & 0x1fffffff)
++#endif
++/* end of +++ */
++static unsigned int msdc_do_command(struct msdc_host   *host, 
++                                      struct mmc_command *cmd,
++                                      int                 tune,
++                                      unsigned long       timeout);  
++                                     
++static int msdc_tune_cmdrsp(struct msdc_host*host,struct mmc_command *cmd);
++
++#ifdef MT6575_SD_DEBUG
++static void msdc_dump_card_status(struct msdc_host *host, u32 status)
++{
++    static char *state[] = {
++        "Idle",			/* 0 */
++        "Ready",		/* 1 */
++        "Ident",		/* 2 */
++        "Stby",			/* 3 */
++        "Tran",			/* 4 */
++        "Data",			/* 5 */
++        "Rcv",			/* 6 */
++        "Prg",			/* 7 */
++        "Dis",			/* 8 */
++        "Reserved",		/* 9 */
++        "Reserved",		/* 10 */
++        "Reserved",		/* 11 */
++        "Reserved",		/* 12 */
++        "Reserved",		/* 13 */
++        "Reserved",		/* 14 */
++        "I/O mode",		/* 15 */
++    };
++    if (status & R1_OUT_OF_RANGE)
++        N_MSG(RSP, "[CARD_STATUS] Out of Range");
++    if (status & R1_ADDRESS_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Address Error");
++    if (status & R1_BLOCK_LEN_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Block Len Error");
++    if (status & R1_ERASE_SEQ_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Erase Seq Error");
++    if (status & R1_ERASE_PARAM)
++        N_MSG(RSP, "[CARD_STATUS] Erase Param");
++    if (status & R1_WP_VIOLATION)
++        N_MSG(RSP, "[CARD_STATUS] WP Violation");
++    if (status & R1_CARD_IS_LOCKED)
++        N_MSG(RSP, "[CARD_STATUS] Card is Locked");
++    if (status & R1_LOCK_UNLOCK_FAILED)
++        N_MSG(RSP, "[CARD_STATUS] Lock/Unlock Failed");
++    if (status & R1_COM_CRC_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Command CRC Error");
++    if (status & R1_ILLEGAL_COMMAND)
++        N_MSG(RSP, "[CARD_STATUS] Illegal Command");
++    if (status & R1_CARD_ECC_FAILED)
++        N_MSG(RSP, "[CARD_STATUS] Card ECC Failed");
++    if (status & R1_CC_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] CC Error");
++    if (status & R1_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Error");
++    if (status & R1_UNDERRUN)
++        N_MSG(RSP, "[CARD_STATUS] Underrun");
++    if (status & R1_OVERRUN)
++        N_MSG(RSP, "[CARD_STATUS] Overrun");
++    if (status & R1_CID_CSD_OVERWRITE)
++        N_MSG(RSP, "[CARD_STATUS] CID/CSD Overwrite");
++    if (status & R1_WP_ERASE_SKIP)
++        N_MSG(RSP, "[CARD_STATUS] WP Eraser Skip");
++    if (status & R1_CARD_ECC_DISABLED)
++        N_MSG(RSP, "[CARD_STATUS] Card ECC Disabled");
++    if (status & R1_ERASE_RESET)
++        N_MSG(RSP, "[CARD_STATUS] Erase Reset");
++    if (status & R1_READY_FOR_DATA)
++        N_MSG(RSP, "[CARD_STATUS] Ready for Data");
++    if (status & R1_SWITCH_ERROR)
++        N_MSG(RSP, "[CARD_STATUS] Switch error");
++    if (status & R1_APP_CMD)
++        N_MSG(RSP, "[CARD_STATUS] App Command");
++    
++    N_MSG(RSP, "[CARD_STATUS] '%s' State", state[R1_CURRENT_STATE(status)]);
++}
++
++static void msdc_dump_ocr_reg(struct msdc_host *host, u32 resp)
++{
++    if (resp & (1 << 7))
++        N_MSG(RSP, "[OCR] Low Voltage Range");
++    if (resp & (1 << 15))
++        N_MSG(RSP, "[OCR] 2.7-2.8 volt");
++    if (resp & (1 << 16))
++        N_MSG(RSP, "[OCR] 2.8-2.9 volt");
++    if (resp & (1 << 17))
++        N_MSG(RSP, "[OCR] 2.9-3.0 volt");
++    if (resp & (1 << 18))
++        N_MSG(RSP, "[OCR] 3.0-3.1 volt");
++    if (resp & (1 << 19))
++        N_MSG(RSP, "[OCR] 3.1-3.2 volt");
++    if (resp & (1 << 20))
++        N_MSG(RSP, "[OCR] 3.2-3.3 volt");
++    if (resp & (1 << 21))
++        N_MSG(RSP, "[OCR] 3.3-3.4 volt");
++    if (resp & (1 << 22))
++        N_MSG(RSP, "[OCR] 3.4-3.5 volt");
++    if (resp & (1 << 23))
++        N_MSG(RSP, "[OCR] 3.5-3.6 volt");
++    if (resp & (1 << 24))
++        N_MSG(RSP, "[OCR] Switching to 1.8V Accepted (S18A)");
++    if (resp & (1 << 30))
++        N_MSG(RSP, "[OCR] Card Capacity Status (CCS)");
++    if (resp & (1 << 31))
++        N_MSG(RSP, "[OCR] Card Power Up Status (Idle)");
++    else
++        N_MSG(RSP, "[OCR] Card Power Up Status (Busy)");
++}
++
++static void msdc_dump_rca_resp(struct msdc_host *host, u32 resp)
++{
++    u32 status = (((resp >> 15) & 0x1) << 23) |
++                 (((resp >> 14) & 0x1) << 22) |
++                 (((resp >> 13) & 0x1) << 19) |
++                   (resp & 0x1fff);
++    
++    N_MSG(RSP, "[RCA] 0x%.4x", resp >> 16);
++    msdc_dump_card_status(host, status);	
++}
++
++static void msdc_dump_io_resp(struct msdc_host *host, u32 resp)
++{
++    u32 flags = (resp >> 8) & 0xFF;
++    char *state[] = {"DIS", "CMD", "TRN", "RFU"};
++    
++    if (flags & (1 << 7))
++        N_MSG(RSP, "[IO] COM_CRC_ERR");
++    if (flags & (1 << 6))
++        N_MSG(RSP, "[IO] Illgal command");   
++    if (flags & (1 << 3))
++        N_MSG(RSP, "[IO] Error");
++    if (flags & (1 << 2))
++        N_MSG(RSP, "[IO] RFU");
++    if (flags & (1 << 1))
++        N_MSG(RSP, "[IO] Function number error");
++    if (flags & (1 << 0))
++        N_MSG(RSP, "[IO] Out of range");
++
++    N_MSG(RSP, "[IO] State: %s, Data:0x%x", state[(resp >> 12) & 0x3], resp & 0xFF);
++}
++#endif
++
++static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
++{
++    u32 base = host->base;
++    u32 timeout, clk_ns;
++
++    host->timeout_ns   = ns;
++    host->timeout_clks = clks;
++
++    clk_ns  = 1000000000UL / host->sclk;
++    timeout = ns / clk_ns + clks;
++    timeout = timeout >> 16; /* in 65536 sclk cycle unit */
++    timeout = timeout > 1 ? timeout - 1 : 0;
++    timeout = timeout > 255 ? 255 : timeout;
++
++    sdr_set_field(SDC_CFG, SDC_CFG_DTOC, timeout);
++
++    N_MSG(OPS, "Set read data timeout: %dns %dclks -> %d x 65536 cycles",
++        ns, clks, timeout + 1);
++}
++
++/* msdc_eirq_sdio() will be called when EIRQ(for WIFI) */
++static void msdc_eirq_sdio(void *data)
++{
++    struct msdc_host *host = (struct msdc_host *)data;
++
++    N_MSG(INT, "SDIO EINT");
++
++    mmc_signal_sdio_irq(host->mmc);
++}
++
++/* msdc_eirq_cd will not be used!  We not using EINT for card detection. */
++static void msdc_eirq_cd(void *data)
++{
++    struct msdc_host *host = (struct msdc_host *)data;
++
++    N_MSG(INT, "CD EINT");
++
++#if 0
++    tasklet_hi_schedule(&host->card_tasklet);
++#else
++    schedule_delayed_work(&host->card_delaywork, HZ);
++#endif
++}
++
++#if 0
++static void msdc_tasklet_card(unsigned long arg)
++{
++    struct msdc_host *host = (struct msdc_host *)arg;
++#else
++static void msdc_tasklet_card(struct work_struct *work)
++{
++    struct msdc_host *host = (struct msdc_host *)container_of(work, 
++		    		struct msdc_host, card_delaywork.work);
++#endif
++    struct msdc_hw *hw = host->hw;
++    u32 base = host->base;
++    u32 inserted;	
++    u32 status = 0;
++    //u32 change = 0;
++
++    spin_lock(&host->lock);
++
++    if (hw->get_cd_status) { // NULL
++	inserted = hw->get_cd_status();
++    } else {
++        status = sdr_read32(MSDC_PS);
++        if (cd_active_low)
++		inserted = (status & MSDC_PS_CDSTS) ? 0 : 1;
++	else
++	        inserted = (status & MSDC_PS_CDSTS) ? 1 : 0;
++    }
++
++#if 0
++    change = host->card_inserted ^ inserted;
++    host->card_inserted = inserted;
++	
++    if (change && !host->suspend) {
++        if (inserted) {
++            host->mmc->f_max = HOST_MAX_MCLK;  // work around          	
++        }     	
++        mmc_detect_change(host->mmc, msecs_to_jiffies(20));
++    }
++#else  /* Make sure: handle the last interrupt */
++    host->card_inserted = inserted;    
++    
++    if (!host->suspend) {
++        host->mmc->f_max = HOST_MAX_MCLK;    	
++        mmc_detect_change(host->mmc, msecs_to_jiffies(20));
++    }   
++    
++    IRQ_MSG("card found<%s>", inserted ? "inserted" : "removed");  	
++#endif
++
++    spin_unlock(&host->lock);
++}
++
++#if 0 /* --- by chhung */
++/* For E2 only */
++static u8 clk_src_bit[4] = {
++   0, 3, 5, 7    	
++};
++
++static void msdc_select_clksrc(struct msdc_host* host, unsigned char clksrc)
++{
++    u32 val; 
++    u32 base = host->base;
++        
++    BUG_ON(clksrc > 3);	
++    INIT_MSG("set clock source to <%d>", clksrc);    	
++
++    val = sdr_read32(MSDC_CLKSRC_REG);      
++    if (sdr_read32(MSDC_ECO_VER) >= 4) {
++        val &= ~(0x3  << clk_src_bit[host->id]); 
++        val |= clksrc << clk_src_bit[host->id];                   	
++    } else {        
++        val &= ~0x3; val |= clksrc;
++    }    
++    sdr_write32(MSDC_CLKSRC_REG, val);
++            
++    host->hclk = hclks[clksrc];     
++    host->hw->clk_src = clksrc;
++}
++#endif /* end of --- */
++
++static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
++{
++    //struct msdc_hw *hw = host->hw;
++    u32 base = host->base;
++    u32 mode;
++    u32 flags;
++    u32 div;
++    u32 sclk;
++    u32 hclk = host->hclk;
++    //u8  clksrc = hw->clk_src;
++
++    if (!hz) { // set mmc system clock to 0 ?
++        //ERR_MSG("set mclk to 0!!!");
++        msdc_reset();
++        return;
++    }
++
++    msdc_irq_save(flags);
++    
++#if defined (CONFIG_MT7621_FPGA) || defined (CONFIG_MT7628_FPGA)
++    mode = 0x0; /* use divisor */
++    if (hz >= (hclk >> 1)) {
++	    div  = 0;         /* mean div = 1/2 */
++	    sclk = hclk >> 1; /* sclk = clk / 2 */
++    } else {
++	    div  = (hclk + ((hz << 2) - 1)) / (hz << 2);
++	    sclk = (hclk >> 2) / div;
++    }
++#else
++    if (ddr) {
++        mode = 0x2; /* ddr mode and use divisor */
++        if (hz >= (hclk >> 2)) {
++        	div  = 1;         /* mean div = 1/4 */
++        	sclk = hclk >> 2; /* sclk = clk / 4 */
++        } else {
++        	div  = (hclk + ((hz << 2) - 1)) / (hz << 2);
++        	sclk = (hclk >> 2) / div;
++        }
++    } else if (hz >= hclk) { /* bug fix */
++        mode = 0x1; /* no divisor and divisor is ignored */
++        div  = 0;
++        sclk = hclk; 
++    } else {
++        mode = 0x0; /* use divisor */
++        if (hz >= (hclk >> 1)) {
++        	div  = 0;         /* mean div = 1/2 */
++        	sclk = hclk >> 1; /* sclk = clk / 2 */
++        } else {
++        	div  = (hclk + ((hz << 2) - 1)) / (hz << 2);
++        	sclk = (hclk >> 2) / div;
++        }
++    }    
++#endif
++    /* set clock mode and divisor */
++    sdr_set_field(MSDC_CFG, MSDC_CFG_CKMOD, mode);
++    sdr_set_field(MSDC_CFG, MSDC_CFG_CKDIV, div);
++   
++    /* wait clock stable */
++    while (!(sdr_read32(MSDC_CFG) & MSDC_CFG_CKSTB));
++
++    host->sclk = sclk;
++    host->mclk = hz;
++    msdc_set_timeout(host, host->timeout_ns, host->timeout_clks); // need?
++     
++    INIT_MSG("================");  
++    INIT_MSG("!!! Set<%dKHz> Source<%dKHz> -> sclk<%dKHz>", hz/1000, hclk/1000, sclk/1000); 
++    INIT_MSG("================");
++
++    msdc_irq_restore(flags);
++}
++
++/* Fix me. when need to abort */
++static void msdc_abort_data(struct msdc_host *host)
++{
++	  u32 base = host->base;
++	  struct mmc_command *stop = host->mrq->stop;
++
++    ERR_MSG("Need to Abort. dma<%d>", host->dma_xfer);
++    
++    msdc_reset();
++    msdc_clr_fifo();        
++    msdc_clr_int();
++
++    // need to check FIFO count 0 ?
++    
++    if (stop) {  /* try to stop, but may not success */
++        ERR_MSG("stop when abort CMD<%d>", stop->opcode);     	
++        (void)msdc_do_command(host, stop, 0, CMD_TIMEOUT);
++    }
++    
++    //if (host->mclk >= 25000000) {
++    //      msdc_set_mclk(host, 0, host->mclk >> 1);
++    //}
++}
++
++#if 0 /* --- by chhung */
++static void msdc_pin_config(struct msdc_host *host, int mode)
++{
++    struct msdc_hw *hw = host->hw;
++    u32 base = host->base;
++    int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN;
++
++    /* Config WP pin */
++    if (hw->flags & MSDC_WP_PIN_EN) {
++        if (hw->config_gpio_pin) /* NULL */
++            hw->config_gpio_pin(MSDC_WP_PIN, pull);
++    }
++
++    switch (mode) {
++    case MSDC_PIN_PULL_UP:
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 1); /* Check & FIXME */
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 1);
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 1);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0);
++        break;
++    case MSDC_PIN_PULL_DOWN:
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 1); /* Check & FIXME */
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0);
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 1);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 1);
++        break;
++    case MSDC_PIN_PULL_NONE:
++    default:
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPU, 0); /* Check & FIXME */
++        //sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKPD, 0); /* Check & FIXME */
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPU, 0);
++        sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDPD, 0);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPU, 0);
++        sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATPD, 0);
++        break;
++    }
++    
++    N_MSG(CFG, "Pins mode(%d), down(%d), up(%d)", 
++        mode, MSDC_PIN_PULL_DOWN, MSDC_PIN_PULL_UP);
++}
++
++void msdc_pin_reset(struct msdc_host *host, int mode)
++{
++    struct msdc_hw *hw = (struct msdc_hw *)host->hw;
++    u32 base = host->base;
++    int pull = (mode == MSDC_PIN_PULL_UP) ? GPIO_PULL_UP : GPIO_PULL_DOWN;
++
++    /* Config reset pin */
++    if (hw->flags & MSDC_RST_PIN_EN) {
++        if (hw->config_gpio_pin) /* NULL */
++            hw->config_gpio_pin(MSDC_RST_PIN, pull);
++
++        if (mode == MSDC_PIN_PULL_UP) {
++            sdr_clr_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST);
++        } else {
++            sdr_set_bits(EMMC_IOCON, EMMC_IOCON_BOOTRST);
++        }
++    }
++}
++
++static void msdc_core_power(struct msdc_host *host, int on)
++{
++    N_MSG(CFG, "Turn %s %s power (copower: %d -> %d)", 
++        on ? "on" : "off", "core", host->core_power, on);
++
++    if (on && host->core_power == 0) {
++        msdc_vcore_on(host);
++        host->core_power = 1;
++        msleep(1);
++    } else if (!on && host->core_power == 1) {
++        msdc_vcore_off(host);
++        host->core_power = 0;
++        msleep(1);
++    }
++}
++
++static void msdc_host_power(struct msdc_host *host, int on)
++{
++    N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "host");
++
++    if (on) {
++        //msdc_core_power(host, 1); // need do card detection. 
++        msdc_pin_reset(host, MSDC_PIN_PULL_UP);
++    } else {
++        msdc_pin_reset(host, MSDC_PIN_PULL_DOWN);
++        //msdc_core_power(host, 0);
++    }
++}
++
++static void msdc_card_power(struct msdc_host *host, int on)
++{
++    N_MSG(CFG, "Turn %s %s power ", on ? "on" : "off", "card");
++
++    if (on) {
++        msdc_pin_config(host, MSDC_PIN_PULL_UP);    
++        if (host->hw->ext_power_on) {
++            host->hw->ext_power_on();
++        } else {
++            //msdc_vdd_on(host);  // need todo card detection.
++        }
++        msleep(1);
++    } else {
++        if (host->hw->ext_power_off) {
++            host->hw->ext_power_off();
++        } else {
++            //msdc_vdd_off(host);
++        }
++        msdc_pin_config(host, MSDC_PIN_PULL_DOWN);
++        msleep(1);
++    }
++}
++
++static void msdc_set_power_mode(struct msdc_host *host, u8 mode)
++{
++    N_MSG(CFG, "Set power mode(%d)", mode);
++
++    if (host->power_mode == MMC_POWER_OFF && mode != MMC_POWER_OFF) {
++        msdc_host_power(host, 1);
++        msdc_card_power(host, 1);
++    } else if (host->power_mode != MMC_POWER_OFF && mode == MMC_POWER_OFF) {
++        msdc_card_power(host, 0);
++        msdc_host_power(host, 0);
++    }
++    host->power_mode = mode;
++}
++#endif /* end of --- */
++
++#ifdef CONFIG_PM
++/*
++   register as callback function of WIFI(combo_sdio_register_pm) .    
++   can called by msdc_drv_suspend/resume too. 
++*/
++static void msdc_pm(pm_message_t state, void *data)
++{
++    struct msdc_host *host = (struct msdc_host *)data;
++    int evt = state.event;
++
++    if (evt == PM_EVENT_USER_RESUME || evt == PM_EVENT_USER_SUSPEND) {
++        INIT_MSG("USR_%s: suspend<%d> power<%d>", 
++                   evt == PM_EVENT_USER_RESUME ? "EVENT_USER_RESUME" : "EVENT_USER_SUSPEND", 
++                   host->suspend, host->power_mode);    	
++    }
++
++    if (evt == PM_EVENT_SUSPEND || evt == PM_EVENT_USER_SUSPEND) {
++        if (host->suspend) /* already suspend */  /* default 0*/
++            return;
++
++        /* for memory card. already power off by mmc */
++        if (evt == PM_EVENT_SUSPEND && host->power_mode == MMC_POWER_OFF)  
++            return;
++
++        host->suspend = 1;
++        host->pm_state = state;  /* default PMSG_RESUME */
++        
++        INIT_MSG("%s Suspend", evt == PM_EVENT_SUSPEND ? "PM" : "USR");                  	
++        if(host->hw->flags & MSDC_SYS_SUSPEND) /* set for card */
++            (void)mmc_suspend_host(host->mmc);
++        else { 
++            // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY;  /* just for double confirm */ /* --- by chhung */
++            mmc_remove_host(host->mmc);
++        }
++    } else if (evt == PM_EVENT_RESUME || evt == PM_EVENT_USER_RESUME) {
++        if (!host->suspend){
++            //ERR_MSG("warning: already resume");   	
++            return;
++        }
++
++        /* No PM resume when USR suspend */
++        if (evt == PM_EVENT_RESUME && host->pm_state.event == PM_EVENT_USER_SUSPEND) {
++            ERR_MSG("PM Resume when in USR Suspend");   	/* won't happen. */
++            return;
++        }
++        
++        host->suspend = 0;
++        host->pm_state = state;
++        
++        INIT_MSG("%s Resume", evt == PM_EVENT_RESUME ? "PM" : "USR");                
++        if(host->hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */
++            (void)mmc_resume_host(host->mmc);
++        }
++        else { 
++            // host->mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* --- by chhung */
++            mmc_add_host(host->mmc);
++        }
++    }
++}
++#endif
++
++/*--------------------------------------------------------------------------*/
++/* mmc_host_ops members                                                      */
++/*--------------------------------------------------------------------------*/
++static unsigned int msdc_command_start(struct msdc_host   *host, 
++                                      struct mmc_command *cmd,
++                                      int                 tune,   /* not used */
++                                      unsigned long       timeout)
++{
++    u32 base = host->base;
++    u32 opcode = cmd->opcode;
++    u32 rawcmd;
++    u32 wints = MSDC_INT_CMDRDY  | MSDC_INT_RSPCRCERR  | MSDC_INT_CMDTMO  |  
++                MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | 
++                MSDC_INT_ACMD19_DONE;  
++                   
++    u32 resp;  
++    unsigned long tmo;
++
++    /* Protocol layer does not provide response type, but our hardware needs 
++     * to know exact type, not just size!
++     */
++    if (opcode == MMC_SEND_OP_COND || opcode == SD_APP_OP_COND)
++        resp = RESP_R3;
++    else if (opcode == MMC_SET_RELATIVE_ADDR || opcode == SD_SEND_RELATIVE_ADDR)
++        resp = (mmc_cmd_type(cmd) == MMC_CMD_BCR) ? RESP_R6 : RESP_R1;
++    else if (opcode == MMC_FAST_IO)
++        resp = RESP_R4;
++    else if (opcode == MMC_GO_IRQ_STATE)
++        resp = RESP_R5;
++    else if (opcode == MMC_SELECT_CARD)
++        resp = (cmd->arg != 0) ? RESP_R1B : RESP_NONE;
++    else if (opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED)
++        resp = RESP_R1; /* SDIO workaround. */
++    else if (opcode == SD_SEND_IF_COND && (mmc_cmd_type(cmd) == MMC_CMD_BCR))
++        resp = RESP_R1;
++    else {
++        switch (mmc_resp_type(cmd)) {
++        case MMC_RSP_R1:
++            resp = RESP_R1;
++            break;
++        case MMC_RSP_R1B:
++            resp = RESP_R1B;
++            break;
++        case MMC_RSP_R2:
++            resp = RESP_R2;
++            break;
++        case MMC_RSP_R3:
++            resp = RESP_R3;
++            break;
++        case MMC_RSP_NONE:
++        default:
++            resp = RESP_NONE;              
++            break;
++        }
++    }
++
++    cmd->error = 0;
++    /* rawcmd :
++     * vol_swt << 30 | auto_cmd << 28 | blklen << 16 | go_irq << 15 | 
++     * stop << 14 | rw << 13 | dtype << 11 | rsptyp << 7 | brk << 6 | opcode
++     */    
++    rawcmd = opcode | msdc_rsp[resp] << 7 | host->blksz << 16;
++    
++    if (opcode == MMC_READ_MULTIPLE_BLOCK) {
++        rawcmd |= (2 << 11);
++    } else if (opcode == MMC_READ_SINGLE_BLOCK) {
++        rawcmd |= (1 << 11);
++    } else if (opcode == MMC_WRITE_MULTIPLE_BLOCK) {
++        rawcmd |= ((2 << 11) | (1 << 13));
++    } else if (opcode == MMC_WRITE_BLOCK) {
++        rawcmd |= ((1 << 11) | (1 << 13));
++    } else if (opcode == SD_IO_RW_EXTENDED) {
++        if (cmd->data->flags & MMC_DATA_WRITE)
++            rawcmd |= (1 << 13);
++        if (cmd->data->blocks > 1)
++            rawcmd |= (2 << 11);
++        else
++            rawcmd |= (1 << 11);
++    } else if (opcode == SD_IO_RW_DIRECT && cmd->flags == (unsigned int)-1) {
++        rawcmd |= (1 << 14);
++    } else if ((opcode == SD_APP_SEND_SCR) || 
++        (opcode == SD_APP_SEND_NUM_WR_BLKS) ||
++        (opcode == SD_SWITCH && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
++        (opcode == SD_APP_SD_STATUS && (mmc_cmd_type(cmd) == MMC_CMD_ADTC)) ||
++        (opcode == MMC_SEND_EXT_CSD && (mmc_cmd_type(cmd) == MMC_CMD_ADTC))) {
++        rawcmd |= (1 << 11);
++    } else if (opcode == MMC_STOP_TRANSMISSION) {
++        rawcmd |= (1 << 14);
++        rawcmd &= ~(0x0FFF << 16);
++    }
++
++    N_MSG(CMD, "CMD<%d><0x%.8x> Arg<0x%.8x>", opcode , rawcmd, cmd->arg);
++
++    tmo = jiffies + timeout;
++
++    if (opcode == MMC_SEND_STATUS) {
++        for (;;) {
++            if (!sdc_is_cmd_busy())
++                break;
++                
++            if (time_after(jiffies, tmo)) {
++                ERR_MSG("XXX cmd_busy timeout: before CMD<%d>", opcode);	
++                cmd->error = (unsigned int)-ETIMEDOUT;
++                msdc_reset();
++                goto end;
++            } 
++        }
++    }else {
++        for (;;) {	 
++            if (!sdc_is_busy())
++                break;
++            if (time_after(jiffies, tmo)) {
++                ERR_MSG("XXX sdc_busy timeout: before CMD<%d>", opcode);	
++                cmd->error = (unsigned int)-ETIMEDOUT;
++                msdc_reset();
++                goto end;      
++            }   
++        }    
++    }   
++    
++    //BUG_ON(in_interrupt());
++    host->cmd     = cmd;
++    host->cmd_rsp = resp;		
++    
++    init_completion(&host->cmd_done);     
++
++    sdr_set_bits(MSDC_INTEN, wints);          
++    sdc_send_cmd(rawcmd, cmd->arg);        
++      
++end:    	
++    return cmd->error;
++}
++
++static unsigned int msdc_command_resp(struct msdc_host   *host, 
++                                      struct mmc_command *cmd,
++                                      int                 tune,
++                                      unsigned long       timeout)
++{
++    u32 base = host->base;
++    u32 opcode = cmd->opcode;
++    //u32 rawcmd;
++    u32 resp;
++    u32 wints = MSDC_INT_CMDRDY  | MSDC_INT_RSPCRCERR  | MSDC_INT_CMDTMO  |  
++                MSDC_INT_ACMDRDY | MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | 
++                MSDC_INT_ACMD19_DONE;     
++    
++    resp = host->cmd_rsp;
++
++    BUG_ON(in_interrupt());
++    //init_completion(&host->cmd_done);
++    //sdr_set_bits(MSDC_INTEN, wints);
++        
++    spin_unlock(&host->lock);   
++    if(!wait_for_completion_timeout(&host->cmd_done, 10*timeout)){       
++        ERR_MSG("XXX CMD<%d> wait_for_completion timeout ARG<0x%.8x>", opcode, cmd->arg);
++        cmd->error = (unsigned int)-ETIMEDOUT;
++        msdc_reset();
++    }    
++    spin_lock(&host->lock);
++
++    sdr_clr_bits(MSDC_INTEN, wints);
++    host->cmd = NULL;
++
++//end:
++#ifdef MT6575_SD_DEBUG
++    switch (resp) {
++    case RESP_NONE:
++        N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)", opcode, cmd->error, resp);
++        break;
++    case RESP_R2:
++        N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= %.8x %.8x %.8x %.8x", 
++            opcode, cmd->error, resp, cmd->resp[0], cmd->resp[1], 
++            cmd->resp[2], cmd->resp[3]);          
++        break;
++    default: /* Response types 1, 3, 4, 5, 6, 7(1b) */
++        N_MSG(RSP, "CMD_RSP(%d): %d RSP(%d)= 0x%.8x", 
++            opcode, cmd->error, resp, cmd->resp[0]);
++        if (cmd->error == 0) {
++            switch (resp) {
++            case RESP_R1:
++            case RESP_R1B:
++                msdc_dump_card_status(host, cmd->resp[0]);
++                break;
++            case RESP_R3:
++                msdc_dump_ocr_reg(host, cmd->resp[0]);
++                break;
++            case RESP_R5:
++                msdc_dump_io_resp(host, cmd->resp[0]);
++                break;
++            case RESP_R6:
++                msdc_dump_rca_resp(host, cmd->resp[0]);
++                break;
++            }
++        }
++        break;
++    }
++#endif
++
++    /* do we need to save card's RCA when SD_SEND_RELATIVE_ADDR */   
++
++    if (!tune) {
++        return cmd->error;    	
++    }
++
++    /* memory card CRC */     
++    if(host->hw->flags & MSDC_REMOVABLE && cmd->error == (unsigned int)(-EIO) ) {          
++        if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */ 
++            msdc_abort_data(host);
++        } else {
++            /* do basic: reset*/	
++            msdc_reset();
++            msdc_clr_fifo();        
++            msdc_clr_int();        	
++        } 
++        cmd->error = msdc_tune_cmdrsp(host,cmd); 
++    }
++
++    //  check DAT0 
++    /* if (resp == RESP_R1B) {
++        while ((sdr_read32(MSDC_PS) & 0x10000) != 0x10000);       
++    } */ 
++    /* CMD12 Error Handle */
++                	
++    return cmd->error;
++}                                   
++
++static unsigned int msdc_do_command(struct msdc_host   *host, 
++                                      struct mmc_command *cmd,
++                                      int                 tune,
++                                      unsigned long       timeout)
++{
++    if (msdc_command_start(host, cmd, tune, timeout)) 
++        goto end;      
++
++    if (msdc_command_resp(host, cmd, tune, timeout)) 
++        goto end;          
++           	    
++end:	
++
++    N_MSG(CMD, "        return<%d> resp<0x%.8x>", cmd->error, cmd->resp[0]); 	
++    return cmd->error;
++}
++    
++/* The abort condition when PIO read/write 
++   tmo: 
++*/
++static int msdc_pio_abort(struct msdc_host *host, struct mmc_data *data, unsigned long tmo)
++{
++    int  ret = 0; 	
++    u32  base = host->base;
++    
++    if (atomic_read(&host->abort)) {	
++        ret = 1;
++    }    
++
++    if (time_after(jiffies, tmo)) {
++        data->error = (unsigned int)-ETIMEDOUT;
++        ERR_MSG("XXX PIO Data Timeout: CMD<%d>", host->mrq->cmd->opcode);
++        ret = 1;		
++    }      
++    
++    if(ret) {
++        msdc_reset();
++        msdc_clr_fifo();        
++        msdc_clr_int();     	
++        ERR_MSG("msdc pio find abort");      
++    }
++    return ret; 
++}
++
++/*
++   Need to add a timeout, or WDT timeout, system reboot.      
++*/
++// pio mode data read/write
++static int msdc_pio_read(struct msdc_host *host, struct mmc_data *data)
++{
++    struct scatterlist *sg = data->sg;
++    u32  base = host->base;
++    u32  num = data->sg_len;
++    u32 *ptr;
++    u8  *u8ptr;
++    u32  left = 0;
++    u32  count, size = 0;
++    u32  wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;     
++    unsigned long tmo = jiffies + DAT_TIMEOUT;  
++          
++    sdr_set_bits(MSDC_INTEN, wints);
++    while (num) {
++        left = sg_dma_len(sg);
++        ptr = sg_virt(sg);
++        while (left) {
++            if ((left >=  MSDC_FIFO_THD) && (msdc_rxfifocnt() >= MSDC_FIFO_THD)) {
++                count = MSDC_FIFO_THD >> 2;
++                do {
++                    *ptr++ = msdc_fifo_read32();
++                } while (--count);
++                left -= MSDC_FIFO_THD;
++            } else if ((left < MSDC_FIFO_THD) && msdc_rxfifocnt() >= left) {
++                while (left > 3) {
++                    *ptr++ = msdc_fifo_read32();
++                    left -= 4;
++                }
++                 
++                u8ptr = (u8 *)ptr; 
++                while(left) {
++                    * u8ptr++ = msdc_fifo_read8();
++                    left--; 	  
++                }
++            }
++            
++            if (msdc_pio_abort(host, data, tmo)) {
++                goto end; 	
++            }
++        }
++        size += sg_dma_len(sg);
++        sg = sg_next(sg); num--;
++    }
++end:
++    data->bytes_xfered += size;
++    N_MSG(FIO, "        PIO Read<%d>bytes", size);
++        
++    sdr_clr_bits(MSDC_INTEN, wints);    
++    if(data->error) ERR_MSG("read pio data->error<%d> left<%d> size<%d>", data->error, left, size);
++    return data->error;
++}
++
++/* please make sure won't using PIO when size >= 512 
++   which means, memory card block read/write won't using pio
++   then don't need to handle the CMD12 when data error. 
++*/
++static int msdc_pio_write(struct msdc_host* host, struct mmc_data *data)
++{
++    u32  base = host->base;
++    struct scatterlist *sg = data->sg;
++    u32  num = data->sg_len;
++    u32 *ptr;
++    u8  *u8ptr;
++    u32  left;
++    u32  count, size = 0;
++    u32  wints = MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ;      
++    unsigned long tmo = jiffies + DAT_TIMEOUT;  
++    
++    sdr_set_bits(MSDC_INTEN, wints);    
++    while (num) {
++        left = sg_dma_len(sg);
++        ptr = sg_virt(sg);
++
++        while (left) {
++            if (left >= MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
++                count = MSDC_FIFO_SZ >> 2;
++                do {
++                    msdc_fifo_write32(*ptr); ptr++;
++                } while (--count);
++                left -= MSDC_FIFO_SZ;
++            } else if (left < MSDC_FIFO_SZ && msdc_txfifocnt() == 0) {
++                while (left > 3) {
++                    msdc_fifo_write32(*ptr); ptr++;
++                    left -= 4;
++                } 
++                
++                u8ptr = (u8*)ptr; 
++                while(left){
++                    msdc_fifo_write8(*u8ptr);	u8ptr++;
++                    left--;
++                }
++            }
++            
++            if (msdc_pio_abort(host, data, tmo)) {
++                goto end; 	
++            }                   
++        }
++        size += sg_dma_len(sg);
++        sg = sg_next(sg); num--;
++    }
++end:    
++    data->bytes_xfered += size;
++    N_MSG(FIO, "        PIO Write<%d>bytes", size);
++    if(data->error) ERR_MSG("write pio data->error<%d>", data->error);
++    	
++    sdr_clr_bits(MSDC_INTEN, wints);  
++    return data->error;	
++}
++
++#if 0 /* --- by chhung */
++// DMA resume / start / stop 
++static void msdc_dma_resume(struct msdc_host *host)
++{
++    u32 base = host->base;
++
++    sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_RESUME, 1);
++
++    N_MSG(DMA, "DMA resume");
++}
++#endif /* end of --- */
++
++static void msdc_dma_start(struct msdc_host *host)
++{
++    u32 base = host->base;
++    u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; 
++           
++    sdr_set_bits(MSDC_INTEN, wints);
++    //dsb(); /* --- by chhung */
++    sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_START, 1);
++
++    N_MSG(DMA, "DMA start");
++}
++
++static void msdc_dma_stop(struct msdc_host *host)
++{
++    u32 base = host->base;
++    //u32 retries=500;
++    u32 wints = MSDC_INTEN_XFER_COMPL | MSDC_INTEN_DATTMO | MSDC_INTEN_DATCRCERR ; 
++    
++    N_MSG(DMA, "DMA status: 0x%.8x",sdr_read32(MSDC_DMA_CFG));
++    //while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS);
++
++    sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP, 1);
++    while (sdr_read32(MSDC_DMA_CFG) & MSDC_DMA_CFG_STS);
++
++    //dsb(); /* --- by chhung */
++    sdr_clr_bits(MSDC_INTEN, wints); /* Not just xfer_comp */
++
++    N_MSG(DMA, "DMA stop");
++}
++
++#if 0 /* --- by chhung */
++/* dump a gpd list */
++static void msdc_dma_dump(struct msdc_host *host, struct msdc_dma *dma)
++{
++    gpd_t *gpd = dma->gpd; 
++    bd_t   *bd = dma->bd; 	 	
++    bd_t   *ptr; 
++    int i = 0; 
++    int p_to_v; 
++    
++    if (dma->mode != MSDC_MODE_DMA_DESC) {
++        return; 	
++    }    
++
++    ERR_MSG("try to dump gpd and bd");
++
++    /* dump gpd */
++    ERR_MSG(".gpd<0x%.8x> gpd_phy<0x%.8x>", (int)gpd, (int)dma->gpd_addr);
++    ERR_MSG("...hwo   <%d>", gpd->hwo );
++    ERR_MSG("...bdp   <%d>", gpd->bdp );
++    ERR_MSG("...chksum<0x%.8x>", gpd->chksum );
++    //ERR_MSG("...intr  <0x%.8x>", gpd->intr );
++    ERR_MSG("...next  <0x%.8x>", (int)gpd->next );
++    ERR_MSG("...ptr   <0x%.8x>", (int)gpd->ptr );
++    ERR_MSG("...buflen<0x%.8x>", gpd->buflen );
++    //ERR_MSG("...extlen<0x%.8x>", gpd->extlen );
++    //ERR_MSG("...arg   <0x%.8x>", gpd->arg );
++    //ERR_MSG("...blknum<0x%.8x>", gpd->blknum );    
++    //ERR_MSG("...cmd   <0x%.8x>", gpd->cmd );      
++
++    /* dump bd */
++    ERR_MSG(".bd<0x%.8x> bd_phy<0x%.8x> gpd_ptr<0x%.8x>", (int)bd, (int)dma->bd_addr, (int)gpd->ptr);  
++    ptr = bd; 
++    p_to_v = ((u32)bd - (u32)dma->bd_addr);
++    while (1) {
++        ERR_MSG(".bd[%d]", i); i++;          	
++        ERR_MSG("...eol   <%d>", ptr->eol );
++        ERR_MSG("...chksum<0x%.8x>", ptr->chksum );
++        //ERR_MSG("...blkpad<0x%.8x>", ptr->blkpad );
++        //ERR_MSG("...dwpad <0x%.8x>", ptr->dwpad );
++        ERR_MSG("...next  <0x%.8x>", (int)ptr->next );
++        ERR_MSG("...ptr   <0x%.8x>", (int)ptr->ptr );
++        ERR_MSG("...buflen<0x%.8x>", (int)ptr->buflen );
++        
++        if (ptr->eol == 1) {
++            break; 	
++        }
++        	             
++        /* find the next bd, virtual address of ptr->next */
++        /* don't need to enable when use malloc */
++        //BUG_ON( (ptr->next + p_to_v)!=(ptr+1) );     	
++        //ERR_MSG(".next bd<0x%.8x><0x%.8x>", (ptr->next + p_to_v), (ptr+1));
++        ptr++;               
++    }    
++    
++    ERR_MSG("dump gpd and bd finished");
++}
++#endif /* end of --- */
++
++/* calc checksum */
++static u8 msdc_dma_calcs(u8 *buf, u32 len)
++{
++    u32 i, sum = 0;
++    for (i = 0; i < len; i++) {
++        sum += buf[i];
++    }
++    return 0xFF - (u8)sum;
++}
++
++/* gpd bd setup + dma registers */
++static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
++{
++    u32 base = host->base;
++    u32 sglen = dma->sglen;
++    //u32 i, j, num, bdlen, arg, xfersz;
++    u32 j, num, bdlen;
++    u8  blkpad, dwpad, chksum;
++    struct scatterlist *sg = dma->sg;
++    gpd_t *gpd;
++    bd_t *bd;
++
++    switch (dma->mode) {
++    case MSDC_MODE_DMA_BASIC:
++        BUG_ON(dma->xfersz > 65535);
++        BUG_ON(dma->sglen != 1);
++        sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg)));
++        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1);
++//#if defined (CONFIG_RALINK_MT7620)
++	if (ralink_soc == MT762X_SOC_MT7620A)
++	        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_XFERSZ, sg_dma_len(sg));
++//#elif defined (CONFIG_RALINK_MT7621) || defined (CONFIG_RALINK_MT7628)
++        else
++		sdr_write32((volatile u32*)(RALINK_MSDC_BASE+0xa8), sg_dma_len(sg));
++//#endif
++        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
++        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 0);
++        break;
++    case MSDC_MODE_DMA_DESC:
++        blkpad = (dma->flags & DMA_FLAG_PAD_BLOCK) ? 1 : 0;
++        dwpad  = (dma->flags & DMA_FLAG_PAD_DWORD) ? 1 : 0;
++        chksum = (dma->flags & DMA_FLAG_EN_CHKSUM) ? 1 : 0;
++
++        /* calculate the required number of gpd */
++        num = (sglen + MAX_BD_PER_GPD - 1) / MAX_BD_PER_GPD;        
++        BUG_ON(num !=1 );        
++        
++        gpd = dma->gpd; 
++        bd  = dma->bd; 
++        bdlen = sglen; 
++
++        /* modify gpd*/
++        //gpd->intr = 0; 
++        gpd->hwo = 1;  /* hw will clear it */
++        gpd->bdp = 1;     
++        gpd->chksum = 0;  /* need to clear first. */   
++        gpd->chksum = (chksum ? msdc_dma_calcs((u8 *)gpd, 16) : 0);
++        
++        /* modify bd*/          
++        for (j = 0; j < bdlen; j++) {
++            msdc_init_bd(&bd[j], blkpad, dwpad, sg_dma_address(sg), sg_dma_len(sg));            
++            if(j == bdlen - 1) {
++            bd[j].eol = 1;     	/* the last bd */
++            } else {
++                bd[j].eol = 0; 	
++            }
++            bd[j].chksum = 0; /* checksume need to clear first */
++            bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0);         
++            sg++;
++        }
++                
++        dma->used_gpd += 2;
++        dma->used_bd += bdlen;  
++
++        sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum);
++        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ, dma->burstsz);
++        sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_MODE, 1);
++
++        sdr_write32(MSDC_DMA_SA, PHYSADDR((u32)dma->gpd_addr));               
++        break;
++
++    default:
++        break;
++    }
++    
++    N_MSG(DMA, "DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL));
++    N_MSG(DMA, "DMA_CFG  = 0x%x", sdr_read32(MSDC_DMA_CFG));
++    N_MSG(DMA, "DMA_SA   = 0x%x", sdr_read32(MSDC_DMA_SA));
++
++    return 0;
++} 
++
++static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma, 
++    struct scatterlist *sg, unsigned int sglen)
++{ 
++    BUG_ON(sglen > MAX_BD_NUM); /* not support currently */
++
++    dma->sg = sg;
++    dma->flags = DMA_FLAG_EN_CHKSUM;
++    //dma->flags = DMA_FLAG_NONE; /* CHECKME */
++    dma->sglen = sglen;
++    dma->xfersz = host->xfer_size;
++    dma->burstsz = MSDC_BRUST_64B;
++    
++    if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT)
++        dma->mode = MSDC_MODE_DMA_BASIC;
++    else
++        dma->mode = MSDC_MODE_DMA_DESC;
++
++    N_MSG(DMA, "DMA mode<%d> sglen<%d> xfersz<%d>", dma->mode, dma->sglen, dma->xfersz);
++
++    msdc_dma_config(host, dma);
++    
++    /*if (dma->mode == MSDC_MODE_DMA_DESC) {
++        //msdc_dma_dump(host, dma);
++    } */
++}
++
++/* set block number before send command */
++static void msdc_set_blknum(struct msdc_host *host, u32 blknum)
++{
++    u32 base = host->base;
++
++    sdr_write32(SDC_BLK_NUM, blknum);
++}
++
++static int msdc_do_request(struct mmc_host*mmc, struct mmc_request*mrq)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    struct mmc_command *cmd;
++    struct mmc_data *data;
++    u32 base = host->base;
++    //u32 intsts = 0;     
++	  unsigned int left=0;
++    int dma = 0, read = 1, dir = DMA_FROM_DEVICE, send_type=0;
++    
++    #define SND_DAT 0
++    #define SND_CMD 1
++
++    BUG_ON(mmc == NULL);
++    BUG_ON(mrq == NULL);    
++
++    host->error = 0;
++    atomic_set(&host->abort, 0);
++    
++    cmd  = mrq->cmd;
++    data = mrq->cmd->data;
++   
++#if 0 /* --- by chhung */
++    //if(host->id ==1){
++    N_MSG(OPS, "enable clock!");
++    msdc_ungate_clock(host->id);       
++		//}
++#endif /* end of --- */
++		
++    if (!data) {
++        send_type=SND_CMD;	
++        if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) {
++            goto done;         
++        }
++    } else {
++        BUG_ON(data->blksz > HOST_MAX_BLKSZ);
++        send_type=SND_DAT;
++
++        data->error = 0;
++        read = data->flags & MMC_DATA_READ ? 1 : 0;
++        host->data = data;
++        host->xfer_size = data->blocks * data->blksz;
++        host->blksz = data->blksz;
++
++        /* deside the transfer mode */
++        if (drv_mode[host->id] == MODE_PIO) {
++            host->dma_xfer = dma = 0;
++        } else if (drv_mode[host->id] == MODE_DMA) {
++            host->dma_xfer = dma = 1;        	
++        } else if (drv_mode[host->id] == MODE_SIZE_DEP) {
++            host->dma_xfer = dma = ((host->xfer_size >= dma_size[host->id]) ? 1 : 0);	
++        }      
++
++        if (read) {
++            if ((host->timeout_ns != data->timeout_ns) ||
++                (host->timeout_clks != data->timeout_clks)) {
++                msdc_set_timeout(host, data->timeout_ns, data->timeout_clks);
++            }
++        }
++        
++        msdc_set_blknum(host, data->blocks);
++        //msdc_clr_fifo();  /* no need */
++
++        if (dma) {
++            msdc_dma_on();  /* enable DMA mode first!! */
++            init_completion(&host->xfer_done);
++            
++            /* start the command first*/        	
++            if (msdc_command_start(host, cmd, 1, CMD_TIMEOUT) != 0)
++                goto done;            
++
++            dir = read ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
++            (void)dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
++            msdc_dma_setup(host, &host->dma, data->sg, data->sg_len);            
++                        
++            /* then wait command done */
++            if (msdc_command_resp(host, cmd, 1, CMD_TIMEOUT) != 0)
++                goto done;            
++
++            /* for read, the data coming too fast, then CRC error 
++               start DMA no business with CRC. */
++            //init_completion(&host->xfer_done);           
++            msdc_dma_start(host);
++                       
++            spin_unlock(&host->lock);
++            if(!wait_for_completion_timeout(&host->xfer_done, DAT_TIMEOUT)){
++                ERR_MSG("XXX CMD<%d> wait xfer_done<%d> timeout!!", cmd->opcode, data->blocks * data->blksz);
++                ERR_MSG("    DMA_SA   = 0x%x", sdr_read32(MSDC_DMA_SA));
++                ERR_MSG("    DMA_CA   = 0x%x", sdr_read32(MSDC_DMA_CA));	 
++                ERR_MSG("    DMA_CTRL = 0x%x", sdr_read32(MSDC_DMA_CTRL));
++                ERR_MSG("    DMA_CFG  = 0x%x", sdr_read32(MSDC_DMA_CFG));           
++                data->error = (unsigned int)-ETIMEDOUT;
++                
++                msdc_reset();
++                msdc_clr_fifo();        
++                msdc_clr_int(); 
++            }
++            spin_lock(&host->lock);
++            msdc_dma_stop(host);             
++        } else {
++            /* Firstly: send command */
++            if (msdc_do_command(host, cmd, 1, CMD_TIMEOUT) != 0) {
++                goto done;
++            }
++                                             
++            /* Secondly: pio data phase */           
++            if (read) {
++                if (msdc_pio_read(host, data)){
++                    goto done; 	
++                }
++            } else {
++                if (msdc_pio_write(host, data)) {
++                    goto done; 		
++                }
++            }
++
++            /* For write case: make sure contents in fifo flushed to device */           
++            if (!read) {           	
++                while (1) {
++                    left=msdc_txfifocnt();                    
++                    if (left == 0) {
++                        break;	
++                    }  
++                    if (msdc_pio_abort(host, data, jiffies + DAT_TIMEOUT)) {
++                        break;
++                        /* Fix me: what about if data error, when stop ? how to? */
++                    }                                    
++                }
++            } else {
++                /* Fix me: read case: need to check CRC error */	
++            }
++
++            /* For write case: SDCBUSY and Xfer_Comp will assert when DAT0 not busy. 
++               For read case : SDCBUSY and Xfer_Comp will assert when last byte read out from FIFO.
++            */                             
++            
++            /* try not to wait xfer_comp interrupt. 
++               the next command will check SDC_BUSY. 
++               SDC_BUSY means xfer_comp assert 
++            */ 
++                      
++        } // PIO mode 
++        
++        /* Last: stop transfer */
++        if (data->stop){ 
++            if (msdc_do_command(host, data->stop, 0, CMD_TIMEOUT) != 0) {
++                goto done; 
++            }
++        } 
++    }
++
++done:
++    if (data != NULL) {
++        host->data = NULL;
++        host->dma_xfer = 0;    
++        if (dma != 0) {
++            msdc_dma_off();     
++            host->dma.used_bd  = 0;
++            host->dma.used_gpd = 0;
++            dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
++        }
++        host->blksz = 0;  
++                
++#if 0 // don't stop twice!
++        if(host->hw->flags & MSDC_REMOVABLE && data->error) {          
++            msdc_abort_data(host);
++            /* reset in IRQ, stop command has issued. -> No need */
++        } 
++#endif  
++
++        N_MSG(OPS, "CMD<%d> data<%s %s> blksz<%d> block<%d> error<%d>",cmd->opcode, (dma? "dma":"pio"), 
++                (read ? "read ":"write") ,data->blksz, data->blocks, data->error);                
++    }
++
++#if 0 /* --- by chhung */
++#if 1    
++    //if(host->id==1) {
++    if(send_type==SND_CMD) {
++        if(cmd->opcode == MMC_SEND_STATUS) {
++            if((cmd->resp[0] & CARD_READY_FOR_DATA) ||(CARD_CURRENT_STATE(cmd->resp[0]) != 7)){
++                N_MSG(OPS,"disable clock, CMD13 IDLE");
++                msdc_gate_clock(host->id); 
++            } 
++        } else {
++            N_MSG(OPS,"disable clock, CMD<%d>", cmd->opcode);	
++            msdc_gate_clock(host->id);     	
++        }
++    } else {
++        if(read) {
++    				N_MSG(OPS,"disable clock!!! Read CMD<%d>",cmd->opcode);
++            msdc_gate_clock(host->id); 
++        }
++    }
++    //}
++#else
++    msdc_gate_clock(host->id); 
++#endif
++#endif /* end of --- */
++        
++    if (mrq->cmd->error) host->error = 0x001;
++    if (mrq->data && mrq->data->error) host->error |= 0x010;     
++    if (mrq->stop && mrq->stop->error) host->error |= 0x100; 
++
++    //if (host->error) ERR_MSG("host->error<%d>", host->error);     
++
++    return host->error;
++}
++
++static int msdc_app_cmd(struct mmc_host *mmc, struct msdc_host *host)
++{
++    struct mmc_command cmd;    
++    struct mmc_request mrq;
++    u32 err; 
++
++    memset(&cmd, 0, sizeof(struct mmc_command));    
++    cmd.opcode = MMC_APP_CMD;    
++#if 0   /* bug: we meet mmc->card is null when ACMD6 */   
++    cmd.arg = mmc->card->rca << 16;
++#else 
++    cmd.arg = host->app_cmd_arg;     
++#endif    
++    cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
++
++    memset(&mrq, 0, sizeof(struct mmc_request));
++    mrq.cmd = &cmd; cmd.mrq = &mrq;
++    cmd.data = NULL;        
++
++    err = msdc_do_command(host, &cmd, 0, CMD_TIMEOUT);     
++    return err;      	
++}
++
++static int msdc_tune_cmdrsp(struct msdc_host*host, struct mmc_command *cmd)
++{
++    int result = -1;
++    u32 base = host->base;
++    u32 rsmpl, cur_rsmpl, orig_rsmpl;
++    u32 rrdly, cur_rrdly = 0xffffffff, orig_rrdly;
++    u32 skip = 1;
++    
++    /* ==== don't support 3.0 now ====
++           1: R_SMPL[1] 
++           2: PAD_CMD_RESP_RXDLY[26:22] 
++	    ==========================*/
++
++    // save the previous tune result 
++    sdr_get_field(MSDC_IOCON,    MSDC_IOCON_RSPL,        orig_rsmpl);
++    sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, orig_rrdly);
++
++    rrdly = 0; 
++    do {
++        for (rsmpl = 0; rsmpl < 2; rsmpl++) {
++            /* Lv1: R_SMPL[1] */    	
++            cur_rsmpl = (orig_rsmpl + rsmpl) % 2;         
++            if (skip == 1) {
++                skip = 0; 	
++                continue;	
++            }
++            sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, cur_rsmpl); 
++
++            if (host->app_cmd) {
++                result = msdc_app_cmd(host->mmc, host);	
++                if (result) {
++                    ERR_MSG("TUNE_CMD app_cmd<%d> failed: RESP_RXDLY<%d>,R_SMPL<%d>", 
++                         host->mrq->cmd->opcode, cur_rrdly, cur_rsmpl);
++                    continue;
++                } 
++            }          
++            result = msdc_do_command(host, cmd, 0, CMD_TIMEOUT); // not tune.             
++            ERR_MSG("TUNE_CMD<%d> %s PAD_CMD_RESP_RXDLY[26:22]<%d> R_SMPL[1]<%d>", cmd->opcode,
++                       (result == 0) ? "PASS" : "FAIL", cur_rrdly, cur_rsmpl);
++                       	
++            if (result == 0) {
++                return 0; 	
++            }                        	
++            if (result != (unsigned int)(-EIO)) { 
++                ERR_MSG("TUNE_CMD<%d> Error<%d> not -EIO", cmd->opcode, result);	
++                return result;	 
++            }
++
++            /* should be EIO */
++            if (sdr_read32(SDC_CMD) & 0x1800) { /* check if has data phase */ 
++                msdc_abort_data(host);
++            }
++        }
++		
++        /* Lv2: PAD_CMD_RESP_RXDLY[26:22] */              	
++        cur_rrdly = (orig_rrdly + rrdly + 1) % 32;
++        sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY, cur_rrdly);		
++    }while (++rrdly < 32);
++	
++    return result;
++}
++
++/* Support SD2.0 Only */
++static int msdc_tune_bread(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    u32 base = host->base;
++    u32 ddr=0;	
++    u32 dcrc=0;
++    u32 rxdly, cur_rxdly0, cur_rxdly1;
++    u32 dsmpl, cur_dsmpl,  orig_dsmpl;
++    u32 cur_dat0,  cur_dat1,  cur_dat2,  cur_dat3;
++    u32 cur_dat4,  cur_dat5,  cur_dat6,  cur_dat7;
++    u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
++    u32 orig_dat4, orig_dat5, orig_dat6, orig_dat7;
++    int result = -1;
++    u32 skip = 1;
++
++    sdr_get_field(MSDC_IOCON, MSDC_IOCON_DSPL, orig_dsmpl);
++	
++    /* Tune Method 2. */
++    sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
++
++    rxdly = 0; 
++    do {
++        for (dsmpl = 0; dsmpl < 2; dsmpl++) {
++            cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
++            if (skip == 1) {
++                skip = 0; 	
++                continue;	
++            }             
++            sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
++
++            if (host->app_cmd) {
++                result = msdc_app_cmd(host->mmc, host);	
++                if (result) {
++                    ERR_MSG("TUNE_BREAD app_cmd<%d> failed", host->mrq->cmd->opcode);	
++                    continue;
++                } 
++            } 
++            result = msdc_do_request(mmc,mrq);
++            
++            sdr_get_field(SDC_DCRC_STS, SDC_DCRC_STS_POS|SDC_DCRC_STS_NEG, dcrc); /* RO */
++            if (!ddr) dcrc &= ~SDC_DCRC_STS_NEG;
++            ERR_MSG("TUNE_BREAD<%s> dcrc<0x%x> DATRDDLY0/1<0x%x><0x%x> dsmpl<0x%x>",
++                        (result == 0 && dcrc == 0) ? "PASS" : "FAIL", dcrc,
++                        sdr_read32(MSDC_DAT_RDDLY0), sdr_read32(MSDC_DAT_RDDLY1), cur_dsmpl);
++
++            /* Fix me: result is 0, but dcrc is still exist */
++            if (result == 0 && dcrc == 0) {
++                goto done;
++            } else {
++                /* there is a case: command timeout, and data phase not processed */
++                if (mrq->data->error != 0 && mrq->data->error != (unsigned int)(-EIO)) {
++                    ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>", 
++                               result, mrq->cmd->error, mrq->data->error);	
++                    goto done;     	
++                }
++            }
++        }    
++
++        cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
++        cur_rxdly1 = sdr_read32(MSDC_DAT_RDDLY1);
++
++        /* E1 ECO. YD: Reverse */
++        if (sdr_read32(MSDC_ECO_VER) >= 4) {
++            orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
++            orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
++            orig_dat2 = (cur_rxdly0 >>  8) & 0x1F;
++            orig_dat3 = (cur_rxdly0 >>  0) & 0x1F;
++            orig_dat4 = (cur_rxdly1 >> 24) & 0x1F;
++            orig_dat5 = (cur_rxdly1 >> 16) & 0x1F;
++            orig_dat6 = (cur_rxdly1 >>  8) & 0x1F;
++            orig_dat7 = (cur_rxdly1 >>  0) & 0x1F;
++        } else {   
++            orig_dat0 = (cur_rxdly0 >>  0) & 0x1F;
++            orig_dat1 = (cur_rxdly0 >>  8) & 0x1F;
++            orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
++            orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
++            orig_dat4 = (cur_rxdly1 >>  0) & 0x1F;
++            orig_dat5 = (cur_rxdly1 >>  8) & 0x1F;
++            orig_dat6 = (cur_rxdly1 >> 16) & 0x1F;
++            orig_dat7 = (cur_rxdly1 >> 24) & 0x1F;
++        }
++                
++        if (ddr) {
++            cur_dat0 = (dcrc & (1 << 0) || dcrc & (1 << 8))  ? ((orig_dat0 + 1) % 32) : orig_dat0;
++            cur_dat1 = (dcrc & (1 << 1) || dcrc & (1 << 9))  ? ((orig_dat1 + 1) % 32) : orig_dat1;
++            cur_dat2 = (dcrc & (1 << 2) || dcrc & (1 << 10)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
++            cur_dat3 = (dcrc & (1 << 3) || dcrc & (1 << 11)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
++        } else {
++            cur_dat0 = (dcrc & (1 << 0)) ? ((orig_dat0 + 1) % 32) : orig_dat0;
++            cur_dat1 = (dcrc & (1 << 1)) ? ((orig_dat1 + 1) % 32) : orig_dat1;
++            cur_dat2 = (dcrc & (1 << 2)) ? ((orig_dat2 + 1) % 32) : orig_dat2;
++            cur_dat3 = (dcrc & (1 << 3)) ? ((orig_dat3 + 1) % 32) : orig_dat3;
++        }
++        cur_dat4 = (dcrc & (1 << 4)) ? ((orig_dat4 + 1) % 32) : orig_dat4;
++        cur_dat5 = (dcrc & (1 << 5)) ? ((orig_dat5 + 1) % 32) : orig_dat5;
++        cur_dat6 = (dcrc & (1 << 6)) ? ((orig_dat6 + 1) % 32) : orig_dat6;
++        cur_dat7 = (dcrc & (1 << 7)) ? ((orig_dat7 + 1) % 32) : orig_dat7;
++
++        cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);
++        cur_rxdly1 = (cur_dat4 << 24) | (cur_dat5 << 16) | (cur_dat6 << 8) | (cur_dat7 << 0);
++
++        sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);
++        sdr_write32(MSDC_DAT_RDDLY1, cur_rxdly1);
++
++    } while (++rxdly < 32);   
++          
++done:
++    return result;
++}
++
++static int msdc_tune_bwrite(struct mmc_host *mmc,struct mmc_request *mrq)
++{
++	  struct msdc_host *host = mmc_priv(mmc);
++    u32 base = host->base;
++
++    u32 wrrdly, cur_wrrdly = 0xffffffff, orig_wrrdly;
++    u32 dsmpl,  cur_dsmpl,  orig_dsmpl;
++    u32 rxdly,  cur_rxdly0;
++    u32 orig_dat0, orig_dat1, orig_dat2, orig_dat3;
++    u32 cur_dat0,  cur_dat1,  cur_dat2,  cur_dat3;
++    int result = -1;
++    u32 skip = 1;
++
++    // MSDC_IOCON_DDR50CKD need to check. [Fix me] 
++    
++    sdr_get_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, orig_wrrdly);
++    sdr_get_field(MSDC_IOCON,    MSDC_IOCON_DSPL,        orig_dsmpl );
++
++    /* Tune Method 2. just DAT0 */  
++    sdr_set_field(MSDC_IOCON, MSDC_IOCON_DDLSEL, 1);
++    cur_rxdly0 = sdr_read32(MSDC_DAT_RDDLY0);
++    
++    /* E1 ECO. YD: Reverse */
++    if (sdr_read32(MSDC_ECO_VER) >= 4) {
++        orig_dat0 = (cur_rxdly0 >> 24) & 0x1F;
++        orig_dat1 = (cur_rxdly0 >> 16) & 0x1F;
++        orig_dat2 = (cur_rxdly0 >>  8) & 0x1F;
++        orig_dat3 = (cur_rxdly0 >>  0) & 0x1F;
++    } else {
++        orig_dat0 = (cur_rxdly0 >>  0) & 0x1F;
++        orig_dat1 = (cur_rxdly0 >>  8) & 0x1F;
++        orig_dat2 = (cur_rxdly0 >> 16) & 0x1F;
++        orig_dat3 = (cur_rxdly0 >> 24) & 0x1F;
++    }
++
++    rxdly = 0;
++    do {
++        wrrdly = 0;
++        do {    
++            for (dsmpl = 0; dsmpl < 2; dsmpl++) {
++                cur_dsmpl = (orig_dsmpl + dsmpl) % 2;
++                if (skip == 1) {
++                    skip = 0;
++                    continue; 	
++                }    
++                sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, cur_dsmpl);
++                
++                if (host->app_cmd) {
++                    result = msdc_app_cmd(host->mmc, host);	
++                    if (result) {
++                        ERR_MSG("TUNE_BWRITE app_cmd<%d> failed", host->mrq->cmd->opcode);	
++                        continue;
++                    } 
++                }             
++                result = msdc_do_request(mmc,mrq);
++            
++                ERR_MSG("TUNE_BWRITE<%s> DSPL<%d> DATWRDLY<%d> MSDC_DAT_RDDLY0<0x%x>", 
++                          result == 0 ? "PASS" : "FAIL", 
++                          cur_dsmpl, cur_wrrdly, cur_rxdly0);
++            
++                if (result == 0) {
++                    goto done;
++                }
++                else {
++                    /* there is a case: command timeout, and data phase not processed */
++                    if (mrq->data->error != (unsigned int)(-EIO)) {
++                        ERR_MSG("TUNE_READ: result<0x%x> cmd_error<%d> data_error<%d>", 
++                                   result, mrq->cmd->error, mrq->data->error);	
++                        goto done;     	
++                    }
++                }       
++            }
++            cur_wrrdly = (orig_wrrdly + wrrdly + 1) % 32;
++            sdr_set_field(MSDC_PAD_TUNE, MSDC_PAD_TUNE_DATWRDLY, cur_wrrdly);             
++        } while (++wrrdly < 32); 
++        
++        cur_dat0 = (orig_dat0 + rxdly) % 32; /* only adjust bit-1 for crc */
++        cur_dat1 = orig_dat1;
++        cur_dat2 = orig_dat2;
++        cur_dat3 = orig_dat3;                    
++    
++        cur_rxdly0 = (cur_dat0 << 24) | (cur_dat1 << 16) | (cur_dat2 << 8) | (cur_dat3 << 0);       
++        sdr_write32(MSDC_DAT_RDDLY0, cur_rxdly0);    
++    } while (++rxdly < 32); 
++
++done:
++    return result;
++}
++
++static int msdc_get_card_status(struct mmc_host *mmc, struct msdc_host *host, u32 *status)
++{
++    struct mmc_command cmd;    
++    struct mmc_request mrq;
++    u32 err; 
++
++    memset(&cmd, 0, sizeof(struct mmc_command));    
++    cmd.opcode = MMC_SEND_STATUS;    
++    if (mmc->card) {
++        cmd.arg = mmc->card->rca << 16;
++    } else {
++        ERR_MSG("cmd13 mmc card is null");	   	
++        cmd.arg = host->app_cmd_arg;    	
++    }
++    cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
++
++    memset(&mrq, 0, sizeof(struct mmc_request));
++    mrq.cmd = &cmd; cmd.mrq = &mrq;
++    cmd.data = NULL;        
++
++    err = msdc_do_command(host, &cmd, 1, CMD_TIMEOUT);        
++    
++    if (status) {
++        *status = cmd.resp[0];
++    }    
++    
++    return err;                	
++}
++
++static int msdc_check_busy(struct mmc_host *mmc, struct msdc_host *host)
++{
++    u32 err = 0; 
++    u32 status = 0;
++    
++    do {
++        err = msdc_get_card_status(mmc, host, &status);
++        if (err) return err;
++        /* need cmd12? */    	 
++        ERR_MSG("cmd<13> resp<0x%x>", status);
++    } while (R1_CURRENT_STATE(status) == 7);   
++    
++    return err; 	
++}
++
++/* failed when msdc_do_request */
++static int msdc_tune_request(struct mmc_host *mmc, struct mmc_request *mrq)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    struct mmc_command *cmd;
++    struct mmc_data *data;
++    //u32 base = host->base;
++	  int ret=0, read; 
++	  
++    cmd  = mrq->cmd;
++    data = mrq->cmd->data;
++    
++    read = data->flags & MMC_DATA_READ ? 1 : 0;
++
++    if (read) {
++        if (data->error == (unsigned int)(-EIO)) {	       	
++            ret = msdc_tune_bread(mmc,mrq);    	
++        }
++    } else {
++        ret = msdc_check_busy(mmc, host);    	
++        if (ret){
++            ERR_MSG("XXX cmd13 wait program done failed");
++            return ret;
++        }
++        /* CRC and TO */   	
++        /* Fix me: don't care card status? */
++        ret = msdc_tune_bwrite(mmc,mrq);    	
++    }
++
++    return ret;
++}
++
++/* ops.request */
++static void msdc_ops_request(struct mmc_host *mmc,struct mmc_request *mrq)
++{   
++    struct msdc_host *host = mmc_priv(mmc);
++
++    //=== for sdio profile ===
++#if 0 /* --- by chhung */
++    u32 old_H32, old_L32, new_H32, new_L32;
++    u32 ticks = 0, opcode = 0, sizes = 0, bRx = 0; 
++#endif /* end of --- */
++      
++    if(host->mrq){
++        ERR_MSG("XXX host->mrq<0x%.8x>", (int)host->mrq);   
++        BUG();	
++    }       	 
++      
++    if (!is_card_present(host) || host->power_mode == MMC_POWER_OFF) {
++        ERR_MSG("cmd<%d> card<%d> power<%d>", mrq->cmd->opcode, is_card_present(host), host->power_mode);
++        mrq->cmd->error = (unsigned int)-ENOMEDIUM; 
++        
++#if 1        
++        mrq->done(mrq);         // call done directly.
++#else
++        mrq->cmd->retries = 0;  // please don't retry.
++        mmc_request_done(mmc, mrq);
++#endif
++
++        return;
++    }
++    
++    /* start to process */
++    spin_lock(&host->lock); 
++#if 0 /* --- by chhung */
++    if (sdio_pro_enable) {  //=== for sdio profile ===  
++        if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) {    
++            GPT_GetCounter64(&old_L32, &old_H32); 
++        }
++    }
++#endif /* end of --- */
++    
++    host->mrq = mrq;    
++
++    if (msdc_do_request(mmc,mrq)) {  	
++        if(host->hw->flags & MSDC_REMOVABLE && mrq->data && mrq->data->error) {
++            //msdc_tune_request(mmc,mrq);                                    	
++        }        	
++    }
++
++    /* ==== when request done, check if app_cmd ==== */
++    if (mrq->cmd->opcode == MMC_APP_CMD) {
++        host->app_cmd = 1; 	  
++        host->app_cmd_arg = mrq->cmd->arg;  /* save the RCA */
++    } else {
++        host->app_cmd = 0; 	 
++        //host->app_cmd_arg = 0;    	
++    }
++        
++    host->mrq = NULL; 
++
++#if 0 /* --- by chhung */
++    //=== for sdio profile ===
++    if (sdio_pro_enable) {  
++        if (mrq->cmd->opcode == 52 || mrq->cmd->opcode == 53) {     
++            GPT_GetCounter64(&new_L32, &new_H32);
++            ticks = msdc_time_calc(old_L32, old_H32, new_L32, new_H32);
++            
++            opcode = mrq->cmd->opcode;    
++            if (mrq->cmd->data) {
++                sizes = mrq->cmd->data->blocks * mrq->cmd->data->blksz; 	
++                bRx = mrq->cmd->data->flags & MMC_DATA_READ ? 1 : 0 ;
++            } else {
++                bRx = mrq->cmd->arg	& 0x80000000 ? 1 : 0;  
++            }
++            
++            if (!mrq->cmd->error) {
++                msdc_performance(opcode, sizes, bRx, ticks);
++            }
++        }    
++    } 
++#endif /* end of --- */
++    spin_unlock(&host->lock);
++        
++    mmc_request_done(mmc, mrq);
++     
++   return;
++}
++
++/* called by ops.set_ios */
++static void msdc_set_buswidth(struct msdc_host *host, u32 width)
++{
++    u32 base = host->base;
++    u32 val = sdr_read32(SDC_CFG);
++    
++    val &= ~SDC_CFG_BUSWIDTH;
++    
++    switch (width) {
++    default:
++    case MMC_BUS_WIDTH_1:
++        width = 1;
++        val |= (MSDC_BUS_1BITS << 16);
++        break;
++    case MMC_BUS_WIDTH_4:
++        val |= (MSDC_BUS_4BITS << 16);
++        break;
++    case MMC_BUS_WIDTH_8:
++        val |= (MSDC_BUS_8BITS << 16);
++        break;
++    }
++    
++    sdr_write32(SDC_CFG, val);
++
++    N_MSG(CFG, "Bus Width = %d", width);
++}
++
++/* ops.set_ios */
++static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    struct msdc_hw *hw=host->hw;
++    u32 base = host->base;
++    u32 ddr = 0;
++
++#ifdef MT6575_SD_DEBUG
++    static char *vdd[] = {
++        "1.50v", "1.55v", "1.60v", "1.65v", "1.70v", "1.80v", "1.90v",
++        "2.00v", "2.10v", "2.20v", "2.30v", "2.40v", "2.50v", "2.60v",
++        "2.70v", "2.80v", "2.90v", "3.00v", "3.10v", "3.20v", "3.30v",
++        "3.40v", "3.50v", "3.60v"		
++    };
++    static char *power_mode[] = {
++        "OFF", "UP", "ON"
++    };
++    static char *bus_mode[] = {
++        "UNKNOWN", "OPENDRAIN", "PUSHPULL"
++    };
++    static char *timing[] = {
++        "LEGACY", "MMC_HS", "SD_HS"
++    };
++
++    printk("SET_IOS: CLK(%dkHz), BUS(%s), BW(%u), PWR(%s), VDD(%s), TIMING(%s)",
++        ios->clock / 1000, bus_mode[ios->bus_mode],
++        (ios->bus_width == MMC_BUS_WIDTH_4) ? 4 : 1,
++        power_mode[ios->power_mode], vdd[ios->vdd], timing[ios->timing]);
++#endif
++
++    msdc_set_buswidth(host, ios->bus_width);
++    
++    /* Power control ??? */
++    switch (ios->power_mode) {
++    case MMC_POWER_OFF:
++    case MMC_POWER_UP:
++    // msdc_set_power_mode(host, ios->power_mode); /* --- by chhung */
++        break;
++    case MMC_POWER_ON:
++        host->power_mode = MMC_POWER_ON;
++        break;
++    default:
++        break;
++    }
++
++    /* Clock control */
++    if (host->mclk != ios->clock) {
++        if(ios->clock > 25000000) {	
++            //if (!(host->hw->flags & MSDC_REMOVABLE)) {       	
++            INIT_MSG("SD data latch edge<%d>", hw->data_edge);            
++            sdr_set_field(MSDC_IOCON, MSDC_IOCON_RSPL, hw->cmd_edge);
++            sdr_set_field(MSDC_IOCON, MSDC_IOCON_DSPL, hw->data_edge);
++            //} /* for tuning debug */
++        } else { /* default value */
++            sdr_write32(MSDC_IOCON,      0x00000000);
++            // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000);
++            sdr_write32(MSDC_DAT_RDDLY0, 0x10101010);		// for MT7620 E2 and afterward
++            sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);            
++            // sdr_write32(MSDC_PAD_TUNE,   0x00000000);
++            sdr_write32(MSDC_PAD_TUNE,   0x84101010);		// for MT7620 E2 and afterward
++        }
++        msdc_set_mclk(host, ddr, ios->clock);
++    }
++}
++
++/* ops.get_ro */
++static int msdc_ops_get_ro(struct mmc_host *mmc)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    u32 base = host->base;
++    unsigned long flags;
++    int ro = 0;
++
++    if (host->hw->flags & MSDC_WP_PIN_EN) { /* set for card */
++        spin_lock_irqsave(&host->lock, flags);
++        ro = (sdr_read32(MSDC_PS) >> 31);
++        spin_unlock_irqrestore(&host->lock, flags);
++    }
++    return ro;
++}
++
++/* ops.get_cd */
++static int msdc_ops_get_cd(struct mmc_host *mmc)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    u32 base = host->base;    
++    unsigned long flags;
++    int present = 1;
++
++    /* for sdio, MSDC_REMOVABLE not set, always return 1 */
++    if (!(host->hw->flags & MSDC_REMOVABLE)) {
++        /* For sdio, read H/W always get<1>, but may timeout some times */       	    	
++#if 1
++        host->card_inserted = 1;       
++        return 1;
++#else
++        host->card_inserted = (host->pm_state.event == PM_EVENT_USER_RESUME) ? 1 : 0; 
++        INIT_MSG("sdio ops_get_cd<%d>", host->card_inserted);
++        return host->card_inserted; 
++#endif
++    }
++
++    /* MSDC_CD_PIN_EN set for card */
++    if (host->hw->flags & MSDC_CD_PIN_EN) {
++        spin_lock_irqsave(&host->lock, flags);
++#if 0        
++        present = host->card_inserted;  /* why not read from H/W: Fix me*/
++#else
++        // CD
++	if (cd_active_low)
++		present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 0 : 1; 
++        else
++		present = (sdr_read32(MSDC_PS) & MSDC_PS_CDSTS) ? 1 : 0; 
++        host->card_inserted = present;  
++#endif        
++        spin_unlock_irqrestore(&host->lock, flags);
++    } else {
++        present = 0; /* TODO? Check DAT3 pins for card detection */
++    }
++
++    INIT_MSG("ops_get_cd return<%d>", present);
++    return present;
++}
++
++/* ops.enable_sdio_irq */
++static void msdc_ops_enable_sdio_irq(struct mmc_host *mmc, int enable)
++{
++    struct msdc_host *host = mmc_priv(mmc);
++    struct msdc_hw *hw = host->hw;
++    u32 base = host->base;
++    u32 tmp;
++
++    if (hw->flags & MSDC_EXT_SDIO_IRQ) { /* yes for sdio */
++        if (enable) {
++            hw->enable_sdio_eirq();  /* combo_sdio_enable_eirq */
++        } else {
++            hw->disable_sdio_eirq(); /* combo_sdio_disable_eirq */
++        }
++    } else { 
++    	  ERR_MSG("XXX ");  /* so never enter here */
++        tmp = sdr_read32(SDC_CFG);
++        /* FIXME. Need to interrupt gap detection */
++        if (enable) {
++            tmp |= (SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);           
++        } else {
++            tmp &= ~(SDC_CFG_SDIOIDE | SDC_CFG_SDIOINTWKUP);
++        }
++        sdr_write32(SDC_CFG, tmp);      
++    }
++}
++
++static struct mmc_host_ops mt_msdc_ops = {
++    .request         = msdc_ops_request,
++    .set_ios         = msdc_ops_set_ios,
++    .get_ro          = msdc_ops_get_ro,
++    .get_cd          = msdc_ops_get_cd,
++    .enable_sdio_irq = msdc_ops_enable_sdio_irq,
++};
++
++/*--------------------------------------------------------------------------*/
++/* interrupt handler                                                    */
++/*--------------------------------------------------------------------------*/
++static irqreturn_t msdc_irq(int irq, void *dev_id)
++{
++    struct msdc_host  *host = (struct msdc_host *)dev_id;
++    struct mmc_data   *data = host->data;
++    struct mmc_command *cmd = host->cmd;
++    u32 base = host->base;
++        
++    u32 cmdsts = MSDC_INT_RSPCRCERR  | MSDC_INT_CMDTMO  | MSDC_INT_CMDRDY  |
++                 MSDC_INT_ACMDCRCERR | MSDC_INT_ACMDTMO | MSDC_INT_ACMDRDY |
++                 MSDC_INT_ACMD19_DONE;                 
++    u32 datsts = MSDC_INT_DATCRCERR  |MSDC_INT_DATTMO;
++
++    u32 intsts = sdr_read32(MSDC_INT);
++    u32 inten  = sdr_read32(MSDC_INTEN); inten &= intsts; 
++
++    sdr_write32(MSDC_INT, intsts);  /* clear interrupts */
++    /* MSG will cause fatal error */
++        
++    /* card change interrupt */
++    if (intsts & MSDC_INT_CDSC){
++	if (mtk_sw_poll)
++		return IRQ_HANDLED;
++	IRQ_MSG("MSDC_INT_CDSC irq<0x%.8x>", intsts); 
++#if 0 /* ---/+++ by chhung: fix slot mechanical bounce issue */
++        tasklet_hi_schedule(&host->card_tasklet);
++#else
++	schedule_delayed_work(&host->card_delaywork, HZ);
++#endif
++        /* tuning when plug card ? */
++    }
++    
++    /* sdio interrupt */
++    if (intsts & MSDC_INT_SDIOIRQ){
++        IRQ_MSG("XXX MSDC_INT_SDIOIRQ");  /* seems not sdio irq */
++        //mmc_signal_sdio_irq(host->mmc);
++    }
++
++    /* transfer complete interrupt */
++    if (data != NULL) {
++        if (inten & MSDC_INT_XFER_COMPL) {       	
++            data->bytes_xfered = host->dma.xfersz;
++            complete(&host->xfer_done);           
++        } 
++        
++        if (intsts & datsts) {         
++            /* do basic reset, or stop command will sdc_busy */
++            msdc_reset();
++            msdc_clr_fifo();        
++            msdc_clr_int();             
++            atomic_set(&host->abort, 1);  /* For PIO mode exit */
++            
++            if (intsts & MSDC_INT_DATTMO){
++               	IRQ_MSG("XXX CMD<%d> MSDC_INT_DATTMO", host->mrq->cmd->opcode);
++               	data->error = (unsigned int)-ETIMEDOUT;
++            }
++            else if (intsts & MSDC_INT_DATCRCERR){
++                IRQ_MSG("XXX CMD<%d> MSDC_INT_DATCRCERR, SDC_DCRC_STS<0x%x>", host->mrq->cmd->opcode, sdr_read32(SDC_DCRC_STS));
++                data->error = (unsigned int)-EIO;
++            }
++                                    
++            //if(sdr_read32(MSDC_INTEN) & MSDC_INT_XFER_COMPL) {  
++            if (host->dma_xfer) {
++                complete(&host->xfer_done); /* Read CRC come fast, XFER_COMPL not enabled */
++            } /* PIO mode can't do complete, because not init */
++        }
++    }
++
++    /* command interrupts */
++    if ((cmd != NULL) && (intsts & cmdsts)) {
++        if ((intsts & MSDC_INT_CMDRDY) || (intsts & MSDC_INT_ACMDRDY) || 
++            (intsts & MSDC_INT_ACMD19_DONE)) {
++            u32 *rsp = &cmd->resp[0];
++            
++            switch (host->cmd_rsp) {
++            case RESP_NONE:
++                break;
++            case RESP_R2:
++                *rsp++ = sdr_read32(SDC_RESP3); *rsp++ = sdr_read32(SDC_RESP2);
++                *rsp++ = sdr_read32(SDC_RESP1); *rsp++ = sdr_read32(SDC_RESP0);
++                break;
++            default: /* Response types 1, 3, 4, 5, 6, 7(1b) */
++                if ((intsts & MSDC_INT_ACMDRDY) || (intsts & MSDC_INT_ACMD19_DONE)) {
++                    *rsp = sdr_read32(SDC_ACMD_RESP);
++                } else {
++                    *rsp = sdr_read32(SDC_RESP0);    
++                }
++                break;
++            }
++        } else if ((intsts & MSDC_INT_RSPCRCERR) || (intsts & MSDC_INT_ACMDCRCERR)) {
++            if(intsts & MSDC_INT_ACMDCRCERR){
++                IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDCRCERR",cmd->opcode);
++            } 
++            else {
++                IRQ_MSG("XXX CMD<%d> MSDC_INT_RSPCRCERR",cmd->opcode);
++            }
++            cmd->error = (unsigned int)-EIO;
++        } else if ((intsts & MSDC_INT_CMDTMO) || (intsts & MSDC_INT_ACMDTMO)) {
++            if(intsts & MSDC_INT_ACMDTMO){
++                IRQ_MSG("XXX CMD<%d> MSDC_INT_ACMDTMO",cmd->opcode);
++            }
++            else {
++                IRQ_MSG("XXX CMD<%d> MSDC_INT_CMDTMO",cmd->opcode);
++            }
++            cmd->error = (unsigned int)-ETIMEDOUT;
++            msdc_reset();
++            msdc_clr_fifo();        
++            msdc_clr_int();            
++        }
++        complete(&host->cmd_done);
++    }
++
++    /* mmc irq interrupts */
++    if (intsts & MSDC_INT_MMCIRQ) {
++        printk(KERN_INFO "msdc[%d] MMCIRQ: SDC_CSTS=0x%.8x\r\n", host->id, sdr_read32(SDC_CSTS));    
++    }
++    
++#ifdef MT6575_SD_DEBUG
++    {
++        msdc_int_reg *int_reg = (msdc_int_reg*)&intsts;
++        N_MSG(INT, "IRQ_EVT(0x%x): MMCIRQ(%d) CDSC(%d), ACRDY(%d), ACTMO(%d), ACCRE(%d) AC19DN(%d)", 
++            intsts,
++            int_reg->mmcirq,
++            int_reg->cdsc,
++            int_reg->atocmdrdy,
++            int_reg->atocmdtmo,
++            int_reg->atocmdcrc,
++            int_reg->atocmd19done);
++        N_MSG(INT, "IRQ_EVT(0x%x): SDIO(%d) CMDRDY(%d), CMDTMO(%d), RSPCRC(%d), CSTA(%d)", 
++            intsts,
++            int_reg->sdioirq,
++            int_reg->cmdrdy,
++            int_reg->cmdtmo,
++            int_reg->rspcrc,
++            int_reg->csta);
++        N_MSG(INT, "IRQ_EVT(0x%x): XFCMP(%d) DXDONE(%d), DATTMO(%d), DATCRC(%d), DMAEMP(%d)", 
++            intsts,
++            int_reg->xfercomp,
++            int_reg->dxferdone,
++            int_reg->dattmo,
++            int_reg->datcrc,
++            int_reg->dmaqempty);
++
++    }
++#endif
++    
++    return IRQ_HANDLED;
++}
++
++/*--------------------------------------------------------------------------*/
++/* platform_driver members                                                      */
++/*--------------------------------------------------------------------------*/
++/* called by msdc_drv_probe/remove */
++static void msdc_enable_cd_irq(struct msdc_host *host, int enable)
++{
++	struct msdc_hw *hw = host->hw;
++	u32 base = host->base;
++
++	/* for sdio, not set */
++	if ((hw->flags & MSDC_CD_PIN_EN) == 0) {
++		/* Pull down card detection pin since it is not avaiable */
++		/*
++		   if (hw->config_gpio_pin) 
++		   hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
++		   */
++		sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
++		sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
++		sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
++		return;
++	}
++
++	N_MSG(CFG, "CD IRQ Eanable(%d)", enable);
++
++	if (enable) {
++	    if (hw->enable_cd_eirq) { /* not set, never enter */
++		    hw->enable_cd_eirq();
++	    } else {
++		    /* card detection circuit relies on the core power so that the core power 
++		     * shouldn't be turned off. Here adds a reference count to keep 
++		     * the core power alive.
++		     */
++		    //msdc_vcore_on(host); //did in msdc_init_hw()
++
++		    if (hw->config_gpio_pin) /* NULL */
++			    hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_UP);
++
++		    sdr_set_field(MSDC_PS, MSDC_PS_CDDEBOUNCE, DEFAULT_DEBOUNCE);
++		    sdr_set_bits(MSDC_PS, MSDC_PS_CDEN);
++		    sdr_set_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
++		    sdr_set_bits(SDC_CFG, SDC_CFG_INSWKUP);  /* not in document! Fix me */
++	    }
++    } else {
++	    if (hw->disable_cd_eirq) {
++		    hw->disable_cd_eirq();
++	    } else {
++		    if (hw->config_gpio_pin) /* NULL */
++			    hw->config_gpio_pin(MSDC_CD_PIN, GPIO_PULL_DOWN);
++
++		    sdr_clr_bits(SDC_CFG, SDC_CFG_INSWKUP);
++		    sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
++		    sdr_clr_bits(MSDC_INTEN, MSDC_INTEN_CDSC);
++
++		    /* Here decreases a reference count to core power since card 
++		     * detection circuit is shutdown.
++		     */
++		    //msdc_vcore_off(host);
++	    }
++    }
++}
++
++/* called by msdc_drv_probe */
++static void msdc_init_hw(struct msdc_host *host)
++{
++    u32 base = host->base;
++    struct msdc_hw *hw = host->hw;
++
++#ifdef MT6575_SD_DEBUG	
++    msdc_reg[host->id] = (struct msdc_regs *)host->base;
++#endif
++
++    /* Power on */
++#if 0 /* --- by chhung */
++    msdc_vcore_on(host);
++    msdc_pin_reset(host, MSDC_PIN_PULL_UP);
++    msdc_select_clksrc(host, hw->clk_src);
++    enable_clock(PERI_MSDC0_PDN + host->id, "SD");
++    msdc_vdd_on(host);
++#endif /* end of --- */
++    /* Configure to MMC/SD mode */
++    sdr_set_field(MSDC_CFG, MSDC_CFG_MODE, MSDC_SDMMC); 
++       
++    /* Reset */
++    msdc_reset();
++    msdc_clr_fifo();
++
++    /* Disable card detection */
++    sdr_clr_bits(MSDC_PS, MSDC_PS_CDEN);
++
++    /* Disable and clear all interrupts */
++    sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
++    sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
++    
++#if 1
++	/* reset tuning parameter */
++    sdr_write32(MSDC_PAD_CTL0,   0x00090000);
++    sdr_write32(MSDC_PAD_CTL1,   0x000A0000);
++    sdr_write32(MSDC_PAD_CTL2,   0x000A0000);
++    // sdr_write32(MSDC_PAD_TUNE,   0x00000000);
++    sdr_write32(MSDC_PAD_TUNE,   0x84101010);		// for MT7620 E2 and afterward
++    // sdr_write32(MSDC_DAT_RDDLY0, 0x00000000);
++    sdr_write32(MSDC_DAT_RDDLY0, 0x10101010);		// for MT7620 E2 and afterward
++    sdr_write32(MSDC_DAT_RDDLY1, 0x00000000);
++    sdr_write32(MSDC_IOCON,      0x00000000);
++#if 0 // use MT7620 default value: 0x403c004f
++    sdr_write32(MSDC_PATCH_BIT0, 0x003C000F); /* bit0 modified: Rx Data Clock Source: 1 -> 2.0*/
++#endif
++
++    if (sdr_read32(MSDC_ECO_VER) >= 4) { 
++        if (host->id == 1) {	
++            sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_WRDAT_CRCS, 1); 
++            sdr_set_field(MSDC_PATCH_BIT1, MSDC_PATCH_BIT1_CMD_RSP,    1);
++            
++            /* internal clock: latch read data */  
++            sdr_set_bits(MSDC_PATCH_BIT0, MSDC_PATCH_BIT_CKGEN_CK);  
++        }       	
++    }   
++#endif    
++
++    /* for safety, should clear SDC_CFG.SDIO_INT_DET_EN & set SDC_CFG.SDIO in 
++       pre-loader,uboot,kernel drivers. and SDC_CFG.SDIO_INT_DET_EN will be only
++       set when kernel driver wants to use SDIO bus interrupt */
++    /* Configure to enable SDIO mode. it's must otherwise sdio cmd5 failed */
++    sdr_set_bits(SDC_CFG, SDC_CFG_SDIO);
++
++    /* disable detect SDIO device interupt function */
++    sdr_clr_bits(SDC_CFG, SDC_CFG_SDIOIDE);
++
++    /* eneable SMT for glitch filter */
++    sdr_set_bits(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKSMT);
++    sdr_set_bits(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDSMT);
++    sdr_set_bits(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATSMT);
++
++#if 1
++    /* set clk, cmd, dat pad driving */
++    sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, hw->clk_drv);
++    sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, hw->clk_drv);
++    sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, hw->cmd_drv);
++    sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, hw->cmd_drv);
++    sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, hw->dat_drv);
++    sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, hw->dat_drv);
++#else 
++    sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVN, 0);
++    sdr_set_field(MSDC_PAD_CTL0, MSDC_PAD_CTL0_CLKDRVP, 0);
++    sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVN, 0);
++    sdr_set_field(MSDC_PAD_CTL1, MSDC_PAD_CTL1_CMDDRVP, 0);
++    sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVN, 0);
++    sdr_set_field(MSDC_PAD_CTL2, MSDC_PAD_CTL2_DATDRVP, 0);
++#endif
++
++    /* set sampling edge */
++
++    /* write crc timeout detection */
++    sdr_set_field(MSDC_PATCH_BIT0, 1 << 30, 1);
++
++    /* Configure to default data timeout */
++    sdr_set_field(SDC_CFG, SDC_CFG_DTOC, DEFAULT_DTOC);
++
++    msdc_set_buswidth(host, MMC_BUS_WIDTH_1);
++
++    N_MSG(FUC, "init hardware done!");
++}
++
++/* called by msdc_drv_remove */
++static void msdc_deinit_hw(struct msdc_host *host)
++{
++    u32 base = host->base;
++
++    /* Disable and clear all interrupts */
++    sdr_clr_bits(MSDC_INTEN, sdr_read32(MSDC_INTEN));
++    sdr_write32(MSDC_INT, sdr_read32(MSDC_INT));
++
++    /* Disable card detection */
++    msdc_enable_cd_irq(host, 0);
++    // msdc_set_power_mode(host, MMC_POWER_OFF);   /* make sure power down */ /* --- by chhung */
++}
++
++/* init gpd and bd list in msdc_drv_probe */
++static void msdc_init_gpd_bd(struct msdc_host *host, struct msdc_dma *dma)
++{
++    gpd_t *gpd = dma->gpd; 
++    bd_t  *bd  = dma->bd; 	
++    bd_t  *ptr, *prev;
++    
++    /* we just support one gpd */     
++    int bdlen = MAX_BD_PER_GPD;   	
++
++    /* init the 2 gpd */
++    memset(gpd, 0, sizeof(gpd_t) * 2);
++    //gpd->next = (void *)virt_to_phys(gpd + 1); /* pointer to a null gpd, bug! kmalloc <-> virt_to_phys */  
++    //gpd->next = (dma->gpd_addr + 1);    /* bug */
++    gpd->next = (void *)((u32)dma->gpd_addr + sizeof(gpd_t));    
++
++    //gpd->intr = 0;
++    gpd->bdp  = 1;   /* hwo, cs, bd pointer */      
++    //gpd->ptr  = (void*)virt_to_phys(bd); 
++    gpd->ptr = (void *)dma->bd_addr; /* physical address */
++    
++    memset(bd, 0, sizeof(bd_t) * bdlen);
++    ptr = bd + bdlen - 1;
++    //ptr->eol  = 1;  /* 0 or 1 [Fix me]*/
++    //ptr->next = 0;    
++    
++    while (ptr != bd) {
++        prev = ptr - 1;
++        prev->next = (void *)(dma->bd_addr + sizeof(bd_t) *(ptr - bd));
++        ptr = prev;
++    }
++}
++
++static int msdc_drv_probe(struct platform_device *pdev)
++{
++    struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++    __iomem void *base;
++    struct mmc_host *mmc;
++    struct resource *mem;
++    struct msdc_host *host;
++    struct msdc_hw *hw;
++    int ret, irq;
++ 
++    pdev->dev.platform_data = &msdc0_hw;
++  
++    /* Allocate MMC host for this device */
++    mmc = mmc_alloc_host(sizeof(struct msdc_host), &pdev->dev);
++    if (!mmc) return -ENOMEM;
++
++    hw   = (struct msdc_hw*)pdev->dev.platform_data;
++    mem  = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++    irq  = platform_get_irq(pdev, 0);
++
++    //BUG_ON((!hw) || (!mem) || (irq < 0)); /* --- by chhung */
++    
++    base = devm_ioremap_resource(&pdev->dev, res);
++    if (IS_ERR(base))
++        return PTR_ERR(base);
++
++    /* Set host parameters to mmc */
++    mmc->ops        = &mt_msdc_ops;
++    mmc->f_min      = HOST_MIN_MCLK;
++    mmc->f_max      = HOST_MAX_MCLK;
++    mmc->ocr_avail  = MSDC_OCR_AVAIL;
++    
++    /* For sd card: MSDC_SYS_SUSPEND | MSDC_WP_PIN_EN | MSDC_CD_PIN_EN | MSDC_REMOVABLE | MSDC_HIGHSPEED, 
++       For sdio   : MSDC_EXT_SDIO_IRQ | MSDC_HIGHSPEED */
++    if (hw->flags & MSDC_HIGHSPEED) {
++        mmc->caps   = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
++    }
++    if (hw->data_pins == 4) { /* current data_pins are all 4*/
++        mmc->caps  |= MMC_CAP_4_BIT_DATA;
++    } else if (hw->data_pins == 8) {
++        mmc->caps  |= MMC_CAP_8_BIT_DATA;
++    }
++    if ((hw->flags & MSDC_SDIO_IRQ) || (hw->flags & MSDC_EXT_SDIO_IRQ))
++        mmc->caps |= MMC_CAP_SDIO_IRQ;  /* yes for sdio */
++
++	cd_active_low = !of_property_read_bool(pdev->dev.of_node, "mediatek,cd-high");
++	mtk_sw_poll = of_property_read_bool(pdev->dev.of_node, "mediatek,cd-poll");
++
++	if (mtk_sw_poll)
++		mmc->caps |= MMC_CAP_NEEDS_POLL;
++
++    /* MMC core transfer sizes tunable parameters */
++#if LINUX_VERSION_CODE > KERNEL_VERSION(3,10,0)
++    mmc->max_segs      = MAX_HW_SGMTS;
++#else
++    mmc->max_hw_segs   = MAX_HW_SGMTS;
++    mmc->max_phys_segs = MAX_PHY_SGMTS;
++#endif
++    mmc->max_seg_size  = MAX_SGMT_SZ;
++    mmc->max_blk_size  = HOST_MAX_BLKSZ;
++    mmc->max_req_size  = MAX_REQ_SZ; 
++    mmc->max_blk_count = mmc->max_req_size;
++
++    host = mmc_priv(mmc);
++    host->hw        = hw;
++    host->mmc       = mmc;
++    host->id        = pdev->id;
++    host->error     = 0;
++    host->irq       = irq;    
++    host->base      = (unsigned long) base;
++    host->mclk      = 0;                   /* mclk: the request clock of mmc sub-system */
++    host->hclk      = hclks[hw->clk_src];  /* hclk: clock of clock source to msdc controller */
++    host->sclk      = 0;                   /* sclk: the really clock after divition */
++    host->pm_state  = PMSG_RESUME;
++    host->suspend   = 0;
++    host->core_clkon = 0;
++    host->card_clkon = 0;    
++    host->core_power = 0;
++    host->power_mode = MMC_POWER_OFF;
++//    host->card_inserted = hw->flags & MSDC_REMOVABLE ? 0 : 1;
++    host->timeout_ns = 0;
++    host->timeout_clks = DEFAULT_DTOC * 65536;
++  
++    host->mrq = NULL; 
++    //init_MUTEX(&host->sem); /* we don't need to support multiple threads access */
++   
++    host->dma.used_gpd = 0;
++    host->dma.used_bd = 0;
++
++    /* using dma_alloc_coherent*/  /* todo: using 1, for all 4 slots */
++    host->dma.gpd = dma_alloc_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), &host->dma.gpd_addr, GFP_KERNEL); 
++    host->dma.bd =  dma_alloc_coherent(NULL, MAX_BD_NUM  * sizeof(bd_t),  &host->dma.bd_addr,  GFP_KERNEL); 
++    BUG_ON((!host->dma.gpd) || (!host->dma.bd));    
++    msdc_init_gpd_bd(host, &host->dma);
++    /*for emmc*/
++    msdc_6575_host[pdev->id] = host;
++    
++#if 0
++    tasklet_init(&host->card_tasklet, msdc_tasklet_card, (ulong)host);
++#else
++    INIT_DELAYED_WORK(&host->card_delaywork, msdc_tasklet_card);
++#endif
++    spin_lock_init(&host->lock);
++    msdc_init_hw(host);
++
++    ret = request_irq((unsigned int)irq, msdc_irq, IRQF_TRIGGER_LOW, dev_name(&pdev->dev), host);
++    if (ret) goto release;
++    // mt65xx_irq_unmask(irq); /* --- by chhung */
++    
++    if (hw->flags & MSDC_CD_PIN_EN) { /* not set for sdio */
++        if (hw->request_cd_eirq) { /* not set for MT6575 */
++            hw->request_cd_eirq(msdc_eirq_cd, (void*)host); /* msdc_eirq_cd will not be used! */
++        }
++    }
++
++    if (hw->request_sdio_eirq) /* set to combo_sdio_request_eirq() for WIFI */
++        hw->request_sdio_eirq(msdc_eirq_sdio, (void*)host); /* msdc_eirq_sdio() will be called when EIRQ */
++
++    if (hw->register_pm) {/* yes for sdio */
++#ifdef CONFIG_PM
++        hw->register_pm(msdc_pm, (void*)host);  /* combo_sdio_register_pm() */
++#endif
++        if(hw->flags & MSDC_SYS_SUSPEND) { /* will not set for WIFI */
++            ERR_MSG("MSDC_SYS_SUSPEND and register_pm both set");
++        }
++        //mmc->pm_flags |= MMC_PM_IGNORE_PM_NOTIFY; /* pm not controlled by system but by client. */ /* --- by chhung */
++    }
++    
++    platform_set_drvdata(pdev, mmc);
++
++    ret = mmc_add_host(mmc);
++    if (ret) goto free_irq;
++
++    /* Config card detection pin and enable interrupts */
++    if (hw->flags & MSDC_CD_PIN_EN) {  /* set for card */
++        msdc_enable_cd_irq(host, 1);
++    } else {
++        msdc_enable_cd_irq(host, 0);
++    }  
++
++    return 0;
++
++free_irq:
++    free_irq(irq, host);
++release:
++    platform_set_drvdata(pdev, NULL);
++    msdc_deinit_hw(host);
++
++#if 0
++    tasklet_kill(&host->card_tasklet);
++#else
++    cancel_delayed_work_sync(&host->card_delaywork);
++#endif
++
++    if (mem)
++        release_mem_region(mem->start, mem->end - mem->start + 1);
++
++    mmc_free_host(mmc);
++
++    return ret;
++}
++
++/* 4 device share one driver, using "drvdata" to show difference */
++static int msdc_drv_remove(struct platform_device *pdev)
++{
++    struct mmc_host *mmc;
++    struct msdc_host *host;
++    struct resource *mem;
++
++    mmc  = platform_get_drvdata(pdev);
++    BUG_ON(!mmc);
++    
++    host = mmc_priv(mmc);   
++    BUG_ON(!host);
++
++    ERR_MSG("removed !!!");
++
++    platform_set_drvdata(pdev, NULL);
++    mmc_remove_host(host->mmc);
++    msdc_deinit_hw(host);
++
++#if 0
++    tasklet_kill(&host->card_tasklet);
++#else
++    cancel_delayed_work_sync(&host->card_delaywork);
++#endif
++    free_irq(host->irq, host);
++
++    dma_free_coherent(NULL, MAX_GPD_NUM * sizeof(gpd_t), host->dma.gpd, host->dma.gpd_addr);
++    dma_free_coherent(NULL, MAX_BD_NUM  * sizeof(bd_t),  host->dma.bd,  host->dma.bd_addr);
++
++    mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++    if (mem)
++        release_mem_region(mem->start, mem->end - mem->start + 1);
++
++    mmc_free_host(host->mmc);
++
++    return 0;
++}
++
++/* Fix me: Power Flow */
++#ifdef CONFIG_PM
++static int msdc_drv_suspend(struct platform_device *pdev, pm_message_t state)
++{
++    int ret = 0;
++    struct mmc_host *mmc = platform_get_drvdata(pdev);
++    struct msdc_host *host = mmc_priv(mmc);
++
++    if (mmc && state.event == PM_EVENT_SUSPEND && (host->hw->flags & MSDC_SYS_SUSPEND)) { /* will set for card */
++        msdc_pm(state, (void*)host);
++    }
++    
++    return ret;
++}
++
++static int msdc_drv_resume(struct platform_device *pdev)
++{
++    int ret = 0;
++    struct mmc_host *mmc = platform_get_drvdata(pdev);
++    struct msdc_host *host = mmc_priv(mmc);
++    struct pm_message state;
++
++    state.event = PM_EVENT_RESUME;
++    if (mmc && (host->hw->flags & MSDC_SYS_SUSPEND)) {/* will set for card */
++        msdc_pm(state, (void*)host);
++    }
++
++    /* This mean WIFI not controller by PM */
++    
++    return ret;
++}
++#endif
++
++static const struct of_device_id mt7620_sdhci_match[] = {
++	{ .compatible = "ralink,mt7620-sdhci" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, rt288x_wdt_match);
++
++static struct platform_driver mt_msdc_driver = {
++    .probe   = msdc_drv_probe,
++    .remove  = msdc_drv_remove,
++#ifdef CONFIG_PM
++    .suspend = msdc_drv_suspend,
++    .resume  = msdc_drv_resume,
++#endif
++    .driver  = {
++        .name  = DRV_NAME,
++        .owner = THIS_MODULE,
++	.of_match_table = mt7620_sdhci_match,
++    },
++};
++
++/*--------------------------------------------------------------------------*/
++/* module init/exit                                                      */
++/*--------------------------------------------------------------------------*/
++static int __init mt_msdc_init(void)
++{
++    int ret;
++/* +++ by chhung */
++    u32 reg;
++
++#if defined (CONFIG_MTD_ANY_RALINK)
++    extern int ra_check_flash_type(void);
++    if(ra_check_flash_type() == 2) { /* NAND */
++	    printk("%s: !!!!! SDXC Module Initialize Fail !!!!!", __func__);
++	    return 0;
++    }
++#endif
++    printk("MTK MSDC device init.\n");
++    mtk_sd_device.dev.platform_data = &msdc0_hw;
++if (ralink_soc == MT762X_SOC_MT7620A || ralink_soc == MT762X_SOC_MT7621AT) {
++//#if defined (CONFIG_RALINK_MT7620) || defined (CONFIG_RALINK_MT7621)
++    reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<18);
++//#if defined (CONFIG_RALINK_MT7620)
++	if (ralink_soc == MT762X_SOC_MT7620A)
++    		reg |= 0x1<<18;
++//#endif
++} else {
++//#elif defined (CONFIG_RALINK_MT7628)
++    /* TODO: maybe omitted when RAether already toggle AGPIO_CFG */
++    reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c));
++    reg |= 0x1e << 16;
++    sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x3c), reg);
++
++    reg = sdr_read32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60)) & ~(0x3<<10);
++#if defined (CONFIG_MTK_MMC_EMMC_8BIT)
++    reg |= 0x3<<26 | 0x3<<28 | 0x3<<30;
++    msdc0_hw.data_pins      = 8,
++#endif
++//#endif
++}
++    sdr_write32((volatile u32*)(RALINK_SYSCTL_BASE + 0x60), reg);
++    //platform_device_register(&mtk_sd_device);
++/* end of +++ */
++
++    ret = platform_driver_register(&mt_msdc_driver);
++    if (ret) {
++        printk(KERN_ERR DRV_NAME ": Can't register driver");
++        return ret;
++    }
++    printk(KERN_INFO DRV_NAME ": MediaTek MT6575 MSDC Driver\n");
++
++#if defined (MT6575_SD_DEBUG)
++    msdc_debug_proc_init();
++#endif
++    return 0;
++}
++
++static void __exit mt_msdc_exit(void)
++{
++//    platform_device_unregister(&mtk_sd_device);
++    platform_driver_unregister(&mt_msdc_driver);
++}
++
++module_init(mt_msdc_init);
++module_exit(mt_msdc_exit);
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("MediaTek MT6575 SD/MMC Card Driver");
++MODULE_AUTHOR("Infinity Chen <[email protected]>");
++
++EXPORT_SYMBOL(msdc_6575_host);

target/linux/ramips/patches-4.4/0047-DMA-ralink-add-rt2880-dma-engine.patch

@@ -0,0 +1,628 @@
+From f1c4d9e622c800e1f38b3818f933ec7597d1ccfb Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:29:51 +0100
+Subject: [PATCH 47/53] DMA: ralink: add rt2880 dma engine
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/dma/Kconfig       |    6 +
+ drivers/dma/Makefile      |    1 +
+ drivers/dma/ralink-gdma.c |  577 +++++++++++++++++++++++++++++++++++++++++++++
+ include/linux/dmaengine.h |    1 +
+ 4 files changed, 585 insertions(+)
+ create mode 100644 drivers/dma/ralink-gdma.c
+
+--- a/drivers/dma/Kconfig
++++ b/drivers/dma/Kconfig
+@@ -40,6 +40,12 @@ config ASYNC_TX_ENABLE_CHANNEL_SWITCH
+ config ARCH_HAS_ASYNC_TX_FIND_CHANNEL
+ 	bool
+ 
++config DMA_RALINK
++	tristate "RALINK DMA support"
++	depends on RALINK && SOC_MT7620
++	select DMA_ENGINE
++	select DMA_VIRTUAL_CHANNELS
++
+ config DMA_ENGINE
+ 	bool
+ 
+--- a/drivers/dma/Makefile
++++ b/drivers/dma/Makefile
+@@ -65,5 +65,6 @@ obj-$(CONFIG_TI_DMA_CROSSBAR) += ti-dma-
+ obj-$(CONFIG_TI_EDMA) += edma.o
+ obj-$(CONFIG_XGENE_DMA) += xgene-dma.o
+ obj-$(CONFIG_ZX_DMA) += zx296702_dma.o
++obj-$(CONFIG_DMA_RALINK) += ralink-gdma.o
+ 
+ obj-y += xilinx/
+--- /dev/null
++++ b/drivers/dma/ralink-gdma.c
+@@ -0,0 +1,577 @@
++/*
++ *  Copyright (C) 2013, Lars-Peter Clausen <[email protected]>
++ *  GDMA4740 DMAC support
++ *
++ *  This program is free software; you can redistribute it and/or modify it
++ *  under  the terms of the GNU General	 Public License as published by the
++ *  Free Software Foundation;  either version 2 of the License, or (at your
++ *  option) any later version.
++ *
++ *  You should have received a copy of the GNU General Public License along
++ *  with this program; if not, write to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/dmaengine.h>
++#include <linux/dma-mapping.h>
++#include <linux/err.h>
++#include <linux/init.h>
++#include <linux/list.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++#include <linux/spinlock.h>
++#include <linux/irq.h>
++#include <linux/of_dma.h>
++
++#include "virt-dma.h"
++
++#define GDMA_NR_CHANS			16
++
++#define GDMA_REG_SRC_ADDR(x)		(0x00 + (x) * 0x10)
++#define GDMA_REG_DST_ADDR(x)		(0x04 + (x) * 0x10)
++
++#define GDMA_REG_CTRL0(x)		(0x08 + (x) * 0x10)
++#define GDMA_REG_CTRL0_TX_MASK		0xffff
++#define GDMA_REG_CTRL0_TX_SHIFT		16
++#define GDMA_REG_CTRL0_CURR_MASK	0xff
++#define GDMA_REG_CTRL0_CURR_SHIFT	8
++#define	GDMA_REG_CTRL0_SRC_ADDR_FIXED	BIT(7)
++#define GDMA_REG_CTRL0_DST_ADDR_FIXED	BIT(6)
++#define GDMA_REG_CTRL0_BURST_MASK	0x7
++#define GDMA_REG_CTRL0_BURST_SHIFT	3
++#define	GDMA_REG_CTRL0_DONE_INT		BIT(2)
++#define	GDMA_REG_CTRL0_ENABLE		BIT(1)
++#define	GDMA_REG_CTRL0_HW_MODE		0
++
++#define GDMA_REG_CTRL1(x)		(0x0c + (x) * 0x10)
++#define GDMA_REG_CTRL1_SEG_MASK		0xf
++#define GDMA_REG_CTRL1_SEG_SHIFT	22
++#define GDMA_REG_CTRL1_REQ_MASK		0x3f
++#define GDMA_REG_CTRL1_SRC_REQ_SHIFT	16
++#define GDMA_REG_CTRL1_DST_REQ_SHIFT	8
++#define GDMA_REG_CTRL1_CONTINOUS	BIT(14)
++#define GDMA_REG_CTRL1_NEXT_MASK	0x1f
++#define GDMA_REG_CTRL1_NEXT_SHIFT	3
++#define GDMA_REG_CTRL1_COHERENT		BIT(2)
++#define GDMA_REG_CTRL1_FAIL		BIT(1)
++#define GDMA_REG_CTRL1_MASK		BIT(0)
++
++#define GDMA_REG_UNMASK_INT		0x200
++#define GDMA_REG_DONE_INT		0x204
++
++#define GDMA_REG_GCT			0x220
++#define GDMA_REG_GCT_CHAN_MASK		0x3
++#define GDMA_REG_GCT_CHAN_SHIFT		3
++#define GDMA_REG_GCT_VER_MASK		0x3
++#define GDMA_REG_GCT_VER_SHIFT		1
++#define GDMA_REG_GCT_ARBIT_RR		BIT(0)
++
++enum gdma_dma_transfer_size {
++	GDMA_TRANSFER_SIZE_4BYTE	= 0,
++	GDMA_TRANSFER_SIZE_8BYTE	= 1,
++	GDMA_TRANSFER_SIZE_16BYTE	= 2,
++	GDMA_TRANSFER_SIZE_32BYTE	= 3,
++};
++
++struct gdma_dma_sg {
++	dma_addr_t addr;
++	unsigned int len;
++};
++
++struct gdma_dma_desc {
++	struct virt_dma_desc vdesc;
++
++	enum dma_transfer_direction direction;
++	bool cyclic;
++
++	unsigned int num_sgs;
++	struct gdma_dma_sg sg[];
++};
++
++struct gdma_dmaengine_chan {
++	struct virt_dma_chan vchan;
++	unsigned int id;
++
++	dma_addr_t fifo_addr;
++	unsigned int transfer_shift;
++
++	struct gdma_dma_desc *desc;
++	unsigned int next_sg;
++};
++
++struct gdma_dma_dev {
++	struct dma_device ddev;
++	void __iomem *base;
++	struct clk *clk;
++
++	struct gdma_dmaengine_chan chan[GDMA_NR_CHANS];
++};
++
++static struct gdma_dma_dev *gdma_dma_chan_get_dev(
++	struct gdma_dmaengine_chan *chan)
++{
++	return container_of(chan->vchan.chan.device, struct gdma_dma_dev,
++		ddev);
++}
++
++static struct gdma_dmaengine_chan *to_gdma_dma_chan(struct dma_chan *c)
++{
++	return container_of(c, struct gdma_dmaengine_chan, vchan.chan);
++}
++
++static struct gdma_dma_desc *to_gdma_dma_desc(struct virt_dma_desc *vdesc)
++{
++	return container_of(vdesc, struct gdma_dma_desc, vdesc);
++}
++
++static inline uint32_t gdma_dma_read(struct gdma_dma_dev *dma_dev,
++	unsigned int reg)
++{
++	return readl(dma_dev->base + reg);
++}
++
++static inline void gdma_dma_write(struct gdma_dma_dev *dma_dev,
++	unsigned reg, uint32_t val)
++{
++	//printk("gdma --> %p = 0x%08X\n", dma_dev->base + reg, val);
++	writel(val, dma_dev->base + reg);
++}
++
++static inline void gdma_dma_write_mask(struct gdma_dma_dev *dma_dev,
++	unsigned int reg, uint32_t val, uint32_t mask)
++{
++	uint32_t tmp;
++
++	tmp = gdma_dma_read(dma_dev, reg);
++	tmp &= ~mask;
++	tmp |= val;
++	gdma_dma_write(dma_dev, reg, tmp);
++}
++
++static struct gdma_dma_desc *gdma_dma_alloc_desc(unsigned int num_sgs)
++{
++	return kzalloc(sizeof(struct gdma_dma_desc) +
++		sizeof(struct gdma_dma_sg) * num_sgs, GFP_ATOMIC);
++}
++
++static enum gdma_dma_transfer_size gdma_dma_maxburst(u32 maxburst)
++{
++	if (maxburst <= 7)
++		return GDMA_TRANSFER_SIZE_4BYTE;
++	else if (maxburst <= 15)
++		return GDMA_TRANSFER_SIZE_8BYTE;
++	else if (maxburst <= 31)
++		return GDMA_TRANSFER_SIZE_16BYTE;
++
++	return GDMA_TRANSFER_SIZE_32BYTE;
++}
++
++static int gdma_dma_slave_config(struct dma_chan *c,
++	const struct dma_slave_config *config)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	struct gdma_dma_dev *dma_dev = gdma_dma_chan_get_dev(chan);
++	enum gdma_dma_transfer_size transfer_size;
++	uint32_t flags;
++	uint32_t ctrl0, ctrl1;
++
++	switch (config->direction) {
++	case DMA_MEM_TO_DEV:
++		ctrl1 = 32 << GDMA_REG_CTRL1_SRC_REQ_SHIFT;
++		ctrl1 |= config->slave_id << GDMA_REG_CTRL1_DST_REQ_SHIFT;
++		flags = GDMA_REG_CTRL0_DST_ADDR_FIXED;
++		transfer_size = gdma_dma_maxburst(config->dst_maxburst);
++		chan->fifo_addr = config->dst_addr;
++		break;
++
++	case DMA_DEV_TO_MEM:
++		ctrl1 = config->slave_id << GDMA_REG_CTRL1_SRC_REQ_SHIFT;
++		ctrl1 |= 32 << GDMA_REG_CTRL1_DST_REQ_SHIFT;
++		flags = GDMA_REG_CTRL0_SRC_ADDR_FIXED;
++		transfer_size = gdma_dma_maxburst(config->src_maxburst);
++		chan->fifo_addr = config->src_addr;
++		break;
++
++	default:
++		return -EINVAL;
++	}
++
++	chan->transfer_shift = 1 + transfer_size;
++
++	ctrl0 = flags | GDMA_REG_CTRL0_HW_MODE;
++	ctrl0 |= GDMA_REG_CTRL0_DONE_INT;
++
++	ctrl1 &= ~(GDMA_REG_CTRL1_NEXT_MASK << GDMA_REG_CTRL1_NEXT_SHIFT);
++	ctrl1 |= chan->id << GDMA_REG_CTRL1_NEXT_SHIFT;
++	ctrl1 |= GDMA_REG_CTRL1_FAIL;
++	ctrl1 &= ~GDMA_REG_CTRL1_CONTINOUS;
++	gdma_dma_write(dma_dev, GDMA_REG_CTRL0(chan->id), ctrl0);
++	gdma_dma_write(dma_dev, GDMA_REG_CTRL1(chan->id), ctrl1);
++
++	return 0;
++}
++
++static int gdma_dma_terminate_all(struct dma_chan *c)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	struct gdma_dma_dev *dma_dev = gdma_dma_chan_get_dev(chan);
++	unsigned long flags;
++	LIST_HEAD(head);
++
++	spin_lock_irqsave(&chan->vchan.lock, flags);
++	gdma_dma_write_mask(dma_dev, GDMA_REG_CTRL0(chan->id), 0,
++			GDMA_REG_CTRL0_ENABLE);
++	chan->desc = NULL;
++	vchan_get_all_descriptors(&chan->vchan, &head);
++	spin_unlock_irqrestore(&chan->vchan.lock, flags);
++
++	vchan_dma_desc_free_list(&chan->vchan, &head);
++
++	return 0;
++}
++
++static int gdma_dma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
++	unsigned long arg)
++{
++	struct dma_slave_config *config = (struct dma_slave_config *)arg;
++
++	switch (cmd) {
++	case DMA_SLAVE_CONFIG:
++		return gdma_dma_slave_config(chan, config);
++	case DMA_TERMINATE_ALL:
++		return gdma_dma_terminate_all(chan);
++	default:
++		return -ENOSYS;
++	}
++}
++
++static int gdma_dma_start_transfer(struct gdma_dmaengine_chan *chan)
++{
++	struct gdma_dma_dev *dma_dev = gdma_dma_chan_get_dev(chan);
++	dma_addr_t src_addr, dst_addr;
++	struct virt_dma_desc *vdesc;
++	struct gdma_dma_sg *sg;
++
++	gdma_dma_write_mask(dma_dev, GDMA_REG_CTRL0(chan->id), 0,
++			GDMA_REG_CTRL0_ENABLE);
++
++	if (!chan->desc) {
++		vdesc = vchan_next_desc(&chan->vchan);
++		if (!vdesc)
++			return 0;
++		chan->desc = to_gdma_dma_desc(vdesc);
++		chan->next_sg = 0;
++	}
++
++	if (chan->next_sg == chan->desc->num_sgs)
++		chan->next_sg = 0;
++
++	sg = &chan->desc->sg[chan->next_sg];
++
++	if (chan->desc->direction == DMA_MEM_TO_DEV) {
++		src_addr = sg->addr;
++		dst_addr = chan->fifo_addr;
++	} else {
++		src_addr = chan->fifo_addr;
++		dst_addr = sg->addr;
++	}
++	gdma_dma_write(dma_dev, GDMA_REG_SRC_ADDR(chan->id), src_addr);
++	gdma_dma_write(dma_dev, GDMA_REG_DST_ADDR(chan->id), dst_addr);
++	gdma_dma_write_mask(dma_dev, GDMA_REG_CTRL0(chan->id),
++			(sg->len << GDMA_REG_CTRL0_TX_SHIFT) | GDMA_REG_CTRL0_ENABLE,
++			GDMA_REG_CTRL0_TX_MASK << GDMA_REG_CTRL0_TX_SHIFT);
++	chan->next_sg++;
++	gdma_dma_write_mask(dma_dev, GDMA_REG_CTRL1(chan->id), 0, GDMA_REG_CTRL1_MASK);
++
++	return 0;
++}
++
++static void gdma_dma_chan_irq(struct gdma_dmaengine_chan *chan)
++{
++	spin_lock(&chan->vchan.lock);
++	if (chan->desc) {
++		if (chan->desc && chan->desc->cyclic) {
++			vchan_cyclic_callback(&chan->desc->vdesc);
++		} else {
++			if (chan->next_sg == chan->desc->num_sgs) {
++				chan->desc = NULL;
++				vchan_cookie_complete(&chan->desc->vdesc);
++			}
++		}
++	}
++	gdma_dma_start_transfer(chan);
++	spin_unlock(&chan->vchan.lock);
++}
++
++static irqreturn_t gdma_dma_irq(int irq, void *devid)
++{
++	struct gdma_dma_dev *dma_dev = devid;
++	uint32_t unmask, done;
++	unsigned int i;
++
++	unmask = gdma_dma_read(dma_dev, GDMA_REG_UNMASK_INT);
++	gdma_dma_write(dma_dev, GDMA_REG_UNMASK_INT, unmask);
++	done = gdma_dma_read(dma_dev, GDMA_REG_DONE_INT);
++
++	for (i = 0; i < GDMA_NR_CHANS; ++i)
++		if (done & BIT(i))
++			gdma_dma_chan_irq(&dma_dev->chan[i]);
++	gdma_dma_write(dma_dev, GDMA_REG_DONE_INT, done);
++
++	return IRQ_HANDLED;
++}
++
++static void gdma_dma_issue_pending(struct dma_chan *c)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	unsigned long flags;
++
++	spin_lock_irqsave(&chan->vchan.lock, flags);
++	if (vchan_issue_pending(&chan->vchan) && !chan->desc)
++		gdma_dma_start_transfer(chan);
++	spin_unlock_irqrestore(&chan->vchan.lock, flags);
++}
++
++static struct dma_async_tx_descriptor *gdma_dma_prep_slave_sg(
++	struct dma_chan *c, struct scatterlist *sgl,
++	unsigned int sg_len, enum dma_transfer_direction direction,
++	unsigned long flags, void *context)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	struct gdma_dma_desc *desc;
++	struct scatterlist *sg;
++	unsigned int i;
++
++	desc = gdma_dma_alloc_desc(sg_len);
++	if (!desc)
++		return NULL;
++
++	for_each_sg(sgl, sg, sg_len, i) {
++		desc->sg[i].addr = sg_dma_address(sg);
++		desc->sg[i].len = sg_dma_len(sg);
++	}
++
++	desc->num_sgs = sg_len;
++	desc->direction = direction;
++	desc->cyclic = false;
++
++	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
++}
++
++static struct dma_async_tx_descriptor *gdma_dma_prep_dma_cyclic(
++	struct dma_chan *c, dma_addr_t buf_addr, size_t buf_len,
++	size_t period_len, enum dma_transfer_direction direction,
++	unsigned long flags, void *context)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	struct gdma_dma_desc *desc;
++	unsigned int num_periods, i;
++
++	if (buf_len % period_len)
++		return NULL;
++
++	num_periods = buf_len / period_len;
++
++	desc = gdma_dma_alloc_desc(num_periods);
++	if (!desc)
++		return NULL;
++
++	for (i = 0; i < num_periods; i++) {
++		desc->sg[i].addr = buf_addr;
++		desc->sg[i].len = period_len;
++		buf_addr += period_len;
++	}
++
++	desc->num_sgs = num_periods;
++	desc->direction = direction;
++	desc->cyclic = true;
++
++	return vchan_tx_prep(&chan->vchan, &desc->vdesc, flags);
++}
++
++static size_t gdma_dma_desc_residue(struct gdma_dmaengine_chan *chan,
++	struct gdma_dma_desc *desc, unsigned int next_sg)
++{
++	struct gdma_dma_dev *dma_dev = gdma_dma_chan_get_dev(chan);
++	unsigned int residue, count;
++	unsigned int i;
++
++	residue = 0;
++
++	for (i = next_sg; i < desc->num_sgs; i++)
++		residue += desc->sg[i].len;
++
++	if (next_sg != 0) {
++		count = gdma_dma_read(dma_dev, GDMA_REG_CTRL0(chan->id));
++		count >>= GDMA_REG_CTRL0_CURR_SHIFT;
++		count &= GDMA_REG_CTRL0_CURR_MASK;
++		residue += count << chan->transfer_shift;
++	}
++
++	return residue;
++}
++
++static enum dma_status gdma_dma_tx_status(struct dma_chan *c,
++	dma_cookie_t cookie, struct dma_tx_state *state)
++{
++	struct gdma_dmaengine_chan *chan = to_gdma_dma_chan(c);
++	struct virt_dma_desc *vdesc;
++	enum dma_status status;
++	unsigned long flags;
++
++	status = dma_cookie_status(c, cookie, state);
++	if (status == DMA_SUCCESS || !state)
++		return status;
++
++	spin_lock_irqsave(&chan->vchan.lock, flags);
++	vdesc = vchan_find_desc(&chan->vchan, cookie);
++	if (cookie == chan->desc->vdesc.tx.cookie) {
++		state->residue = gdma_dma_desc_residue(chan, chan->desc,
++				chan->next_sg);
++	} else if (vdesc) {
++		state->residue = gdma_dma_desc_residue(chan,
++				to_gdma_dma_desc(vdesc), 0);
++	} else {
++		state->residue = 0;
++	}
++	spin_unlock_irqrestore(&chan->vchan.lock, flags);
++
++	return status;
++}
++
++static int gdma_dma_alloc_chan_resources(struct dma_chan *c)
++{
++	return 0;
++}
++
++static void gdma_dma_free_chan_resources(struct dma_chan *c)
++{
++	vchan_free_chan_resources(to_virt_chan(c));
++}
++
++static void gdma_dma_desc_free(struct virt_dma_desc *vdesc)
++{
++	kfree(container_of(vdesc, struct gdma_dma_desc, vdesc));
++}
++
++static struct dma_chan *
++of_dma_xlate_by_chan_id(struct of_phandle_args *dma_spec,
++			struct of_dma *ofdma)
++{
++	struct gdma_dma_dev *dma_dev = ofdma->of_dma_data;
++	unsigned int request = dma_spec->args[0];
++
++	if (request >= GDMA_NR_CHANS)
++		return NULL;
++
++	return dma_get_slave_channel(&(dma_dev->chan[request].vchan.chan));
++}
++
++static int gdma_dma_probe(struct platform_device *pdev)
++{
++	struct gdma_dmaengine_chan *chan;
++	struct gdma_dma_dev *dma_dev;
++	struct dma_device *dd;
++	unsigned int i;
++	struct resource *res;
++	uint32_t gct;
++	int ret;
++	int irq;
++
++
++	dma_dev = devm_kzalloc(&pdev->dev, sizeof(*dma_dev), GFP_KERNEL);
++	if (!dma_dev)
++		return -EINVAL;
++
++	dd = &dma_dev->ddev;
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	dma_dev->base = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(dma_dev->base))
++		return PTR_ERR(dma_dev->base);
++
++	dma_cap_set(DMA_SLAVE, dd->cap_mask);
++	dma_cap_set(DMA_CYCLIC, dd->cap_mask);
++	dd->device_alloc_chan_resources = gdma_dma_alloc_chan_resources;
++	dd->device_free_chan_resources = gdma_dma_free_chan_resources;
++	dd->device_tx_status = gdma_dma_tx_status;
++	dd->device_issue_pending = gdma_dma_issue_pending;
++	dd->device_prep_slave_sg = gdma_dma_prep_slave_sg;
++	dd->device_prep_dma_cyclic = gdma_dma_prep_dma_cyclic;
++	dd->device_control = gdma_dma_control;
++	dd->dev = &pdev->dev;
++	dd->chancnt = GDMA_NR_CHANS;
++	INIT_LIST_HEAD(&dd->channels);
++
++	for (i = 0; i < dd->chancnt; i++) {
++		chan = &dma_dev->chan[i];
++		chan->id = i;
++		chan->vchan.desc_free = gdma_dma_desc_free;
++		vchan_init(&chan->vchan, dd);
++	}
++
++	ret = dma_async_device_register(dd);
++	if (ret)
++		return ret;
++
++	ret = of_dma_controller_register(pdev->dev.of_node,
++		of_dma_xlate_by_chan_id, dma_dev);
++	if (ret)
++		goto err_unregister;
++
++	irq = platform_get_irq(pdev, 0);
++	ret = request_irq(irq, gdma_dma_irq, 0, dev_name(&pdev->dev), dma_dev);
++	if (ret)
++		goto err_unregister;
++
++	gdma_dma_write(dma_dev, GDMA_REG_UNMASK_INT, 0);
++	gdma_dma_write(dma_dev, GDMA_REG_DONE_INT, BIT(dd->chancnt) - 1);
++
++	gct = gdma_dma_read(dma_dev, GDMA_REG_GCT);
++	dev_info(&pdev->dev, "revision: %d, channels: %d\n",
++		(gct >> GDMA_REG_GCT_VER_SHIFT) & GDMA_REG_GCT_VER_MASK,
++		8 << ((gct >> GDMA_REG_GCT_CHAN_SHIFT) & GDMA_REG_GCT_CHAN_MASK));
++	platform_set_drvdata(pdev, dma_dev);
++
++	gdma_dma_write(dma_dev, GDMA_REG_GCT, GDMA_REG_GCT_ARBIT_RR);
++
++	return 0;
++
++err_unregister:
++	dma_async_device_unregister(dd);
++	return ret;
++}
++
++static int gdma_dma_remove(struct platform_device *pdev)
++{
++	struct gdma_dma_dev *dma_dev = platform_get_drvdata(pdev);
++	int irq = platform_get_irq(pdev, 0);
++
++	free_irq(irq, dma_dev);
++        of_dma_controller_free(pdev->dev.of_node);
++	dma_async_device_unregister(&dma_dev->ddev);
++
++	return 0;
++}
++
++static const struct of_device_id gdma_of_match_table[] = {
++	{ .compatible = "ralink,rt2880-gdma" },
++	{ },
++};
++
++static struct platform_driver gdma_dma_driver = {
++	.probe = gdma_dma_probe,
++	.remove = gdma_dma_remove,
++	.driver = {
++		.name = "gdma-rt2880",
++		.owner = THIS_MODULE,
++		.of_match_table = gdma_of_match_table,
++	},
++};
++module_platform_driver(gdma_dma_driver);
++
++MODULE_AUTHOR("Lars-Peter Clausen <[email protected]>");
++MODULE_DESCRIPTION("GDMA4740 DMA driver");
++MODULE_LICENSE("GPLv2");
+--- a/include/linux/dmaengine.h
++++ b/include/linux/dmaengine.h
+@@ -496,6 +496,7 @@ static inline void dma_set_unmap(struct
+ struct dmaengine_unmap_data *
+ dmaengine_get_unmap_data(struct device *dev, int nr, gfp_t flags);
+ void dmaengine_unmap_put(struct dmaengine_unmap_data *unmap);
++struct dma_chan *dma_get_slave_channel(struct dma_chan *chan);
+ #else
+ static inline void dma_set_unmap(struct dma_async_tx_descriptor *tx,
+ 				 struct dmaengine_unmap_data *unmap)

target/linux/ramips/patches-4.4/0048-asoc-add-mt7620-support.patch

@@ -0,0 +1,765 @@
+From 7f29222b1731e8182ba94a331531dec18865a1e4 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 27 Jul 2014 09:31:47 +0100
+Subject: [PATCH 48/53] asoc: add mt7620 support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/ralink/of.c            |    2 +
+ sound/soc/Kconfig                |    1 +
+ sound/soc/Makefile               |    1 +
+ sound/soc/ralink/Kconfig         |   15 ++
+ sound/soc/ralink/Makefile        |   11 +
+ sound/soc/ralink/mt7620-i2s.c    |  436 ++++++++++++++++++++++++++++++++++++++
+ sound/soc/ralink/mt7620-wm8960.c |  233 ++++++++++++++++++++
+ 7 files changed, 699 insertions(+)
+ create mode 100644 sound/soc/ralink/Kconfig
+ create mode 100644 sound/soc/ralink/Makefile
+ create mode 100644 sound/soc/ralink/mt7620-i2s.c
+ create mode 100644 sound/soc/ralink/mt7620-wm8960.c
+
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -15,6 +15,7 @@
+ #include <linux/of_fdt.h>
+ #include <linux/kernel.h>
+ #include <linux/bootmem.h>
++#include <linux/module.h>
+ #include <linux/of_platform.h>
+ #include <linux/of_address.h>
+ 
+@@ -26,6 +27,7 @@
+ #include "common.h"
+ 
+ __iomem void *rt_sysc_membase;
++EXPORT_SYMBOL(rt_sysc_membase);
+ __iomem void *rt_memc_membase;
+ 
+ __iomem void *plat_of_remap_node(const char *node)
+--- a/sound/soc/Kconfig
++++ b/sound/soc/Kconfig
+@@ -56,6 +56,7 @@ source "sound/soc/mxs/Kconfig"
+ source "sound/soc/pxa/Kconfig"
+ source "sound/soc/qcom/Kconfig"
+ source "sound/soc/rockchip/Kconfig"
++source "sound/soc/ralink/Kconfig"
+ source "sound/soc/samsung/Kconfig"
+ source "sound/soc/sh/Kconfig"
+ source "sound/soc/sirf/Kconfig"
+--- a/sound/soc/Makefile
++++ b/sound/soc/Makefile
+@@ -36,6 +36,7 @@ obj-$(CONFIG_SND_SOC)	+= kirkwood/
+ obj-$(CONFIG_SND_SOC)	+= pxa/
+ obj-$(CONFIG_SND_SOC)	+= qcom/
+ obj-$(CONFIG_SND_SOC)	+= rockchip/
++obj-$(CONFIG_SND_SOC)	+= ralink/
+ obj-$(CONFIG_SND_SOC)	+= samsung/
+ obj-$(CONFIG_SND_SOC)	+= sh/
+ obj-$(CONFIG_SND_SOC)	+= sirf/
+--- /dev/null
++++ b/sound/soc/ralink/Kconfig
+@@ -0,0 +1,15 @@
++config SND_MT7620_SOC_I2S
++	depends on SOC_MT7620 && SND_SOC
++	select SND_SOC_GENERIC_DMAENGINE_PCM
++	tristate "SoC Audio (I2S protocol) for Ralink MT7620 SoC"
++	help
++	  Say Y if you want to use I2S protocol and I2S codec on Ingenic MT7620
++	  based boards.
++
++config SND_MT7620_SOC_WM8960
++	tristate "SoC Audio support for Ralink WM8960"
++	select SND_MT7620_SOC_I2S
++	select SND_SOC_WM8960
++	help
++	  Say Y if you want to add support for ASoC audio on the Qi LB60 board
++	  a.k.a Qi Ben NanoNote.
+--- /dev/null
++++ b/sound/soc/ralink/Makefile
+@@ -0,0 +1,11 @@
++#
++# Jz4740 Platform Support
++#
++snd-soc-mt7620-i2s-objs := mt7620-i2s.o
++
++obj-$(CONFIG_SND_MT7620_SOC_I2S) += snd-soc-mt7620-i2s.o
++
++# Jz4740 Machine Support
++snd-soc-mt7620-wm8960-objs := mt7620-wm8960.o
++
++obj-$(CONFIG_SND_MT7620_SOC_WM8960) += snd-soc-mt7620-wm8960.o
+--- /dev/null
++++ b/sound/soc/ralink/mt7620-i2s.c
+@@ -0,0 +1,436 @@
++/*
++ *  Copyright (C) 2010, Lars-Peter Clausen <[email protected]>
++ *
++ *  This program is free software; you can redistribute it and/or modify it
++ *  under  the terms of the GNU General  Public License as published by the
++ *  Free Software Foundation;  either version 2 of the License, or (at your
++ *  option) any later version.
++ *
++ *  You should have received a copy of the GNU General Public License along
++ *  with this program; if not, write to the Free Software Foundation, Inc.,
++ *  675 Mass Ave, Cambridge, MA 02139, USA.
++ *
++ */
++
++#include <linux/init.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/slab.h>
++
++#include <linux/delay.h>
++
++#include <linux/dma-mapping.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/initval.h>
++#include <sound/dmaengine_pcm.h>
++
++#include <ralink_regs.h>
++
++#define I2S_REG_CFG0		0x00
++#define I2S_REG_CFG0_EN		BIT(31)
++#define I2S_REG_CFG0_DMA_EN	BIT(30)
++#define I2S_REG_CFG0_BYTE_SWAP	BIT(28)
++#define I2S_REG_CFG0_TX_EN	BIT(24)
++#define I2S_REG_CFG0_RX_EN	BIT(20)
++#define I2S_REG_CFG0_SLAVE	BIT(16)
++#define I2S_REG_CFG0_RX_THRES	12
++#define I2S_REG_CFG0_TX_THRES	4
++#define I2S_REG_CFG0_DFT_THRES	(4 << I2S_REG_CFG0_RX_THRES) | \
++					(4 << I2S_REG_CFG0_TX_THRES)
++
++#define I2S_REG_INT_STATUS	0x04
++#define I2S_REG_INT_EN		0x08
++#define I2S_REG_FF_STATUS	0x0c
++#define I2S_REG_WREG		0x10
++#define I2S_REG_RREG		0x14
++#define I2S_REG_CFG1		0x18
++
++#define I2S_REG_DIVCMP		0x20
++#define I2S_REG_DIVINT		0x24
++#define I2S_REG_CLK_EN		BIT(31)
++
++struct mt7620_i2s {
++	struct resource *mem;
++	void __iomem *base;
++	dma_addr_t phys_base;
++
++	struct snd_dmaengine_dai_dma_data playback_dma_data;
++	struct snd_dmaengine_dai_dma_data capture_dma_data;
++};
++
++static inline uint32_t mt7620_i2s_read(const struct mt7620_i2s *i2s,
++	unsigned int reg)
++{
++	return readl(i2s->base + reg);
++}
++
++static inline void mt7620_i2s_write(const struct mt7620_i2s *i2s,
++	unsigned int reg, uint32_t value)
++{
++	//printk("i2s --> %p = 0x%08X\n", i2s->base + reg, value);
++	writel(value, i2s->base + reg);
++}
++
++static int mt7620_i2s_startup(struct snd_pcm_substream *substream,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	if (dai->active)
++		return 0;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++	cfg |= I2S_REG_CFG0_EN;
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static void mt7620_i2s_shutdown(struct snd_pcm_substream *substream,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	if (dai->active)
++		return;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++	cfg &= ~I2S_REG_CFG0_EN;
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++}
++
++static int mt7620_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
++	struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++
++	uint32_t cfg;
++	uint32_t mask;
++
++	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
++		mask = I2S_REG_CFG0_TX_EN;
++	else
++		mask = I2S_REG_CFG0_RX_EN;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++
++	switch (cmd) {
++	case SNDRV_PCM_TRIGGER_START:
++	case SNDRV_PCM_TRIGGER_RESUME:
++	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++		cfg |= mask;
++		break;
++	case SNDRV_PCM_TRIGGER_STOP:
++	case SNDRV_PCM_TRIGGER_SUSPEND:
++	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++		cfg &= ~mask;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	if (cfg & (I2S_REG_CFG0_TX_EN | I2S_REG_CFG0_RX_EN))
++		cfg |= I2S_REG_CFG0_DMA_EN;
++	else
++		cfg &= ~I2S_REG_CFG0_DMA_EN;
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static int mt7620_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t cfg;
++
++	cfg = mt7620_i2s_read(i2s, I2S_REG_CFG0);
++
++	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
++	case SND_SOC_DAIFMT_CBS_CFS:
++		cfg |= I2S_REG_CFG0_SLAVE;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFM:
++		cfg &= ~I2S_REG_CFG0_SLAVE;
++		break;
++	case SND_SOC_DAIFMT_CBM_CFS:
++	default:
++		return -EINVAL;
++	}
++
++	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
++	case SND_SOC_DAIFMT_I2S:
++	case SND_SOC_DAIFMT_MSB:
++		cfg &= ~I2S_REG_CFG0_BYTE_SWAP;
++		break;
++	case SND_SOC_DAIFMT_LSB:
++		cfg |= I2S_REG_CFG0_BYTE_SWAP;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
++	case SND_SOC_DAIFMT_NB_NF:
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, cfg);
++
++	return 0;
++}
++
++static int mt7620_i2s_hw_params(struct snd_pcm_substream *substream,
++	struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
++{
++
++	return 0;
++}
++
++unsigned long i2sMaster_inclk_int[11] = {
++	78,     56,     52,     39,     28,     26,     19,     14,     13,     9,      6};
++unsigned long i2sMaster_inclk_comp[11] = {
++	64,     352,    42,     32,     176,    21,     272,    88,     10,     455,    261};
++
++
++static int mt7620_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
++	unsigned int freq, int dir)
++{
++        struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++
++	printk("Internal REFCLK with fractional division\n");
++
++	mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
++	mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
++		i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
++
++/*	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	struct clk *parent;
++	int ret = 0;
++
++	switch (clk_id) {
++	case JZ4740_I2S_CLKSRC_EXT:
++		parent = clk_get(NULL, "ext");
++		clk_set_parent(i2s->clk_i2s, parent);
++		break;
++	case JZ4740_I2S_CLKSRC_PLL:
++		parent = clk_get(NULL, "pll half");
++		clk_set_parent(i2s->clk_i2s, parent);
++		ret = clk_set_rate(i2s->clk_i2s, freq);
++		break;
++	default:
++		return -EINVAL;
++	}
++	clk_put(parent);
++
++	return ret;*/
++	return 0;
++}
++
++static void mt7620_i2c_init_pcm_config(struct mt7620_i2s *i2s)
++{
++	struct snd_dmaengine_dai_dma_data *dma_data;
++
++	/* Playback */
++	dma_data = &i2s->playback_dma_data;
++	dma_data->maxburst = 16;
++	dma_data->slave_id = 2; //JZ4740_DMA_TYPE_AIC_TRANSMIT;
++	dma_data->addr = i2s->phys_base + I2S_REG_WREG;
++
++	/* Capture */
++	dma_data = &i2s->capture_dma_data;
++	dma_data->maxburst = 16;
++	dma_data->slave_id = 3; //JZ4740_DMA_TYPE_AIC_RECEIVE;
++	dma_data->addr = i2s->phys_base + I2S_REG_RREG;
++}
++
++static int mt7620_i2s_dai_probe(struct snd_soc_dai *dai)
++{
++	struct mt7620_i2s *i2s = snd_soc_dai_get_drvdata(dai);
++	uint32_t data;
++
++	mt7620_i2c_init_pcm_config(i2s);
++	dai->playback_dma_data = &i2s->playback_dma_data;
++	dai->capture_dma_data = &i2s->capture_dma_data;
++
++	/* set share pins to i2s/gpio mode and i2c mode */
++	data = rt_sysc_r32(0x60);
++	data &= 0xFFFFFFE2;
++	data |= 0x00000018;
++	rt_sysc_w32(data, 0x60);
++
++	printk("Internal REFCLK with fractional division\n");
++
++	mt7620_i2s_write(i2s, I2S_REG_CFG0, I2S_REG_CFG0_DFT_THRES);
++	mt7620_i2s_write(i2s, I2S_REG_CFG1, 0);
++	mt7620_i2s_write(i2s, I2S_REG_INT_EN, 0);
++
++	mt7620_i2s_write(i2s, I2S_REG_DIVINT, i2sMaster_inclk_int[7]);
++	mt7620_i2s_write(i2s, I2S_REG_DIVCMP,
++		i2sMaster_inclk_comp[7] | I2S_REG_CLK_EN);
++
++	return 0;
++}
++
++static int mt7620_i2s_dai_remove(struct snd_soc_dai *dai)
++{
++	return 0;
++}
++
++static const struct snd_soc_dai_ops mt7620_i2s_dai_ops = {
++	.startup = mt7620_i2s_startup,
++	.shutdown = mt7620_i2s_shutdown,
++	.trigger = mt7620_i2s_trigger,
++	.hw_params = mt7620_i2s_hw_params,
++	.set_fmt = mt7620_i2s_set_fmt,
++	.set_sysclk = mt7620_i2s_set_sysclk,
++};
++
++#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
++			 SNDRV_PCM_FMTBIT_S24_LE)
++
++static struct snd_soc_dai_driver mt7620_i2s_dai = {
++	.probe = mt7620_i2s_dai_probe,
++	.remove = mt7620_i2s_dai_remove,
++	.playback = {
++		.channels_min = 1,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_8000_48000,
++		.formats = JZ4740_I2S_FMTS,
++	},
++	.capture = {
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_8000_48000,
++		.formats = JZ4740_I2S_FMTS,
++	},
++	.symmetric_rates = 1,
++	.ops = &mt7620_i2s_dai_ops,
++};
++
++static const struct snd_pcm_hardware mt7620_pcm_hardware = {
++	.info = SNDRV_PCM_INFO_MMAP |
++		SNDRV_PCM_INFO_MMAP_VALID |
++		SNDRV_PCM_INFO_INTERLEAVED |
++		SNDRV_PCM_INFO_BLOCK_TRANSFER,
++	.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
++	.period_bytes_min	= PAGE_SIZE,
++	.period_bytes_max	= 64 * 1024,
++	.periods_min		= 2,
++	.periods_max		= 128,
++	.buffer_bytes_max	= 128 * 1024,
++	.fifo_size		= 32,
++};
++
++static const struct snd_dmaengine_pcm_config mt7620_dmaengine_pcm_config = {
++	.prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config,
++	.pcm_hardware = &mt7620_pcm_hardware,
++	.prealloc_buffer_size = 256 * PAGE_SIZE,
++};
++
++static const struct snd_soc_component_driver mt7620_i2s_component = {
++	.name = "mt7620-i2s",
++};
++
++static int mt7620_i2s_dev_probe(struct platform_device *pdev)
++{
++	struct mt7620_i2s *i2s;
++	int ret;
++
++	snd_dmaengine_pcm_register(&pdev->dev,
++		&mt7620_dmaengine_pcm_config,
++		SND_DMAENGINE_PCM_FLAG_COMPAT);
++
++	i2s = kzalloc(sizeof(*i2s), GFP_KERNEL);
++	if (!i2s)
++		return -ENOMEM;
++
++	i2s->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	if (!i2s->mem) {
++		ret = -ENOENT;
++		goto err_free;
++	}
++
++	i2s->mem = request_mem_region(i2s->mem->start, resource_size(i2s->mem),
++				pdev->name);
++	if (!i2s->mem) {
++		ret = -EBUSY;
++		goto err_free;
++	}
++
++	i2s->base = ioremap_nocache(i2s->mem->start, resource_size(i2s->mem));
++	if (!i2s->base) {
++		ret = -EBUSY;
++		goto err_release_mem_region;
++	}
++
++	i2s->phys_base = i2s->mem->start;
++
++	platform_set_drvdata(pdev, i2s);
++	ret = snd_soc_register_component(&pdev->dev, &mt7620_i2s_component,
++					 &mt7620_i2s_dai, 1);
++
++	if (!ret) {
++		dev_err(&pdev->dev, "loaded\n");
++		return ret;
++	}
++
++	dev_err(&pdev->dev, "Failed to register DAI\n");
++	iounmap(i2s->base);
++
++err_release_mem_region:
++	release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++err_free:
++	kfree(i2s);
++
++	return ret;
++}
++
++static int mt7620_i2s_dev_remove(struct platform_device *pdev)
++{
++	struct mt7620_i2s *i2s = platform_get_drvdata(pdev);
++
++	snd_soc_unregister_component(&pdev->dev);
++
++	iounmap(i2s->base);
++	release_mem_region(i2s->mem->start, resource_size(i2s->mem));
++
++	kfree(i2s);
++
++	snd_dmaengine_pcm_unregister(&pdev->dev);
++
++	return 0;
++}
++
++static const struct of_device_id mt7620_i2s_match[] = {
++	{ .compatible = "ralink,mt7620a-i2s" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt7620_i2s_match);
++
++static struct platform_driver mt7620_i2s_driver = {
++	.probe = mt7620_i2s_dev_probe,
++	.remove = mt7620_i2s_dev_remove,
++	.driver = {
++		.name = "mt7620-i2s",
++		.owner = THIS_MODULE,
++		.of_match_table = mt7620_i2s_match,
++	},
++};
++
++module_platform_driver(mt7620_i2s_driver);
++
++MODULE_AUTHOR("Lars-Peter Clausen, <[email protected]>");
++MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("platform:mt7620-i2s");
+--- /dev/null
++++ b/sound/soc/ralink/mt7620-wm8960.c
+@@ -0,0 +1,233 @@
++/*
++ * Copyright 2013 Freescale Semiconductor, Inc.
++ *
++ * Based on mt7620-sgtl5000.c
++ * Copyright 2012 Freescale Semiconductor, Inc.
++ * Copyright 2012 Linaro Ltd.
++ *
++ * The code contained herein is licensed under the GNU General Public
++ * License. You may obtain a copy of the GNU General Public License
++ * Version 2 or later at the following locations:
++ *
++ * http://www.opensource.org/licenses/gpl-license.html
++ * http://www.gnu.org/copyleft/gpl.html
++ */
++
++#include <linux/module.h>
++#include <linux/of_platform.h>
++#include <linux/i2c.h>
++#include <linux/slab.h>
++#include <sound/soc.h>
++#include <sound/pcm_params.h>
++#include <sound/soc-dapm.h>
++#include <linux/pinctrl/consumer.h>
++
++#include "../codecs/wm8960.h"
++
++#define DAI_NAME_SIZE	32
++
++struct mt7620_wm8960_data {
++	struct snd_soc_dai_link dai;
++	struct snd_soc_card card;
++	char codec_dai_name[DAI_NAME_SIZE];
++	char platform_name[DAI_NAME_SIZE];
++	unsigned int clk_frequency;
++};
++
++struct mt7620_priv {
++	struct platform_device *pdev;
++};
++static struct mt7620_priv card_priv;
++
++static const struct snd_soc_dapm_widget mt7620_wm8960_dapm_widgets[] = {
++	SND_SOC_DAPM_HP("Headphone Jack", NULL),
++	SND_SOC_DAPM_SPK("Ext Spk", NULL),
++	SND_SOC_DAPM_MIC("AMIC", NULL),
++	SND_SOC_DAPM_MIC("DMIC", NULL),
++};
++
++static int sample_rate = 44100;
++static snd_pcm_format_t sample_format = SNDRV_PCM_FORMAT_S16_LE;
++
++static int mt7620_hifi_hw_params(struct snd_pcm_substream *substream,
++		struct snd_pcm_hw_params *params)
++{
++	sample_rate = params_rate(params);
++	sample_format = params_format(params);
++
++	return 0;
++}
++
++static struct snd_soc_ops mt7620_hifi_ops = {
++	.hw_params = mt7620_hifi_hw_params,
++};
++
++static int mt7620_wm8960_set_bias_level(struct snd_soc_card *card,
++					struct snd_soc_dapm_context *dapm,
++					enum snd_soc_bias_level level)
++{
++	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
++	struct mt7620_priv *priv = &card_priv;
++	struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
++	struct device *dev = &priv->pdev->dev;
++	int ret;
++
++	if (dapm->dev != codec_dai->dev)
++		return 0;
++
++	switch (level) {
++	case SND_SOC_BIAS_PREPARE:
++		if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
++		}
++		break;
++
++	case SND_SOC_BIAS_STANDBY:
++		if (dapm->bias_level == SND_SOC_BIAS_PREPARE) {
++			ret = snd_soc_dai_set_sysclk(codec_dai,
++					WM8960_SYSCLK_MCLK, data->clk_frequency,
++					SND_SOC_CLOCK_IN);
++			if (ret < 0) {
++				dev_err(dev,
++					"failed to switch away from FLL: %d\n",
++					ret);
++				return ret;
++			}
++		}
++		break;
++
++	default:
++		break;
++	}
++
++	return 0;
++}
++
++static int mt7620_wm8960_late_probe(struct snd_soc_card *card)
++{
++	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
++	struct mt7620_priv *priv = &card_priv;
++	struct mt7620_wm8960_data *data = snd_soc_card_get_drvdata(card);
++	struct device *dev = &priv->pdev->dev;
++	int ret;
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8960_SYSCLK_MCLK,
++			data->clk_frequency, SND_SOC_CLOCK_IN);
++	if (ret < 0)
++		dev_err(dev, "failed to set sysclk in %s\n", __func__);
++
++	return ret;
++}
++
++static int mt7620_wm8960_probe(struct platform_device *pdev)
++{
++	struct device_node *i2s_np, *codec_np;
++	struct platform_device *i2s_pdev;
++	struct mt7620_priv *priv = &card_priv;
++	struct i2c_client *codec_dev;
++	struct mt7620_wm8960_data *data;
++	int ret;
++
++	priv->pdev = pdev;
++
++	i2s_np = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
++	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
++	if (!i2s_np || !codec_np) {
++		dev_err(&pdev->dev, "phandle missing or invalid\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++
++	i2s_pdev = of_find_device_by_node(i2s_np);
++	if (!i2s_pdev) {
++		dev_err(&pdev->dev, "failed to find SSI platform device\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++	codec_dev = of_find_i2c_device_by_node(codec_np);
++	if (!codec_dev || !codec_dev->dev.driver) {
++		dev_err(&pdev->dev, "failed to find codec platform device\n");
++		ret = -EINVAL;
++		goto fail;
++	}
++
++	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
++	if (!data) {
++		ret = -ENOMEM;
++		goto fail;
++	}
++
++	data->clk_frequency = 12000000;
++	data->dai.name = "HiFi";
++	data->dai.stream_name = "HiFi";
++	data->dai.codec_dai_name = "wm8960-hifi";
++	data->dai.codec_of_node = codec_np;
++	data->dai.cpu_dai_name = dev_name(&i2s_pdev->dev);
++	data->dai.platform_of_node = i2s_np;
++	data->dai.ops = &mt7620_hifi_ops;
++	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++			    SND_SOC_DAIFMT_CBM_CFM;
++
++	data->card.dev = &pdev->dev;
++	ret = snd_soc_of_parse_card_name(&data->card, "model");
++	if (ret)
++		goto fail;
++	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
++	if (ret)
++		goto fail;
++	data->card.num_links = 1;
++	data->card.dai_link = &data->dai;
++	data->card.dapm_widgets = mt7620_wm8960_dapm_widgets;
++	data->card.num_dapm_widgets = ARRAY_SIZE(mt7620_wm8960_dapm_widgets);
++
++	data->card.late_probe = mt7620_wm8960_late_probe;
++	data->card.set_bias_level = mt7620_wm8960_set_bias_level;
++
++	platform_set_drvdata(pdev, &data->card);
++	snd_soc_card_set_drvdata(&data->card, data);
++
++	ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
++	if (ret) {
++		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
++		goto fail;
++	}
++
++	of_node_put(i2s_np);
++	of_node_put(codec_np);
++
++	return 0;
++fail:
++	if (i2s_np)
++		of_node_put(i2s_np);
++	if (codec_np)
++		of_node_put(codec_np);
++
++	return ret;
++}
++
++static int mt7620_wm8960_remove(struct platform_device *pdev)
++{
++	return 0;
++}
++
++static const struct of_device_id mt7620_wm8960_dt_ids[] = {
++	{ .compatible = "mediatek,mt7620-audio-wm8960", },
++	{ /* sentinel */ }
++};
++MODULE_DEVICE_TABLE(of, mt7620_wm8960_dt_ids);
++
++static struct platform_driver mt7620_wm8960_driver = {
++	.driver = {
++		.name = "mt7620-wm8960",
++		.owner = THIS_MODULE,
++		.pm = &snd_soc_pm_ops,
++		.of_match_table = mt7620_wm8960_dt_ids,
++	},
++	.probe = mt7620_wm8960_probe,
++	.remove = mt7620_wm8960_remove,
++};
++module_platform_driver(mt7620_wm8960_driver);
++
++MODULE_AUTHOR("Freescale Semiconductor, Inc.");
++MODULE_DESCRIPTION("Freescale i.MX WM8962 ASoC machine driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:mt7620-wm8962");

target/linux/ramips/patches-4.4/0049-watchdog-add-MT7621-support.patch

@@ -0,0 +1,227 @@
+From 77fe64de72317c0e090d82056e7a6a073f2972b4 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 16 Mar 2014 05:24:42 +0000
+Subject: [PATCH 49/53] watchdog: add MT7621 support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/watchdog/Kconfig      |    7 ++
+ drivers/watchdog/Makefile     |    1 +
+ drivers/watchdog/mt7621_wdt.c |  185 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 193 insertions(+)
+ create mode 100644 drivers/watchdog/mt7621_wdt.c
+
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -1354,6 +1354,13 @@ config RALINK_WDT
+ 	help
+ 	  Hardware driver for the Ralink SoC Watchdog Timer.
+ 
++config MT7621_WDT
++	tristate "Mediatek SoC watchdog"
++	select WATCHDOG_CORE
++	depends on SOC_MT7620 || SOC_MT7621
++	help
++	  Hardware driver for the Ralink SoC Watchdog Timer.
++
+ # PARISC Architecture
+ 
+ # POWERPC Architecture
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -69,6 +69,7 @@ obj-$(CONFIG_MEDIATEK_WATCHDOG) += mtk_w
+ obj-$(CONFIG_DIGICOLOR_WATCHDOG) += digicolor_wdt.o
+ obj-$(CONFIG_LPC18XX_WATCHDOG) += lpc18xx_wdt.o
+ obj-$(CONFIG_BCM7038_WDT) += bcm7038_wdt.o
++obj-$(CONFIG_MT7621_WDT) += mt7621_wdt.o
+ 
+ # AVR32 Architecture
+ obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
+--- /dev/null
++++ b/drivers/watchdog/mt7621_wdt.c
+@@ -0,0 +1,185 @@
++/*
++ * Ralink RT288x/RT3xxx/MT76xx built-in hardware watchdog timer
++ *
++ * Copyright (C) 2011 Gabor Juhos <[email protected]>
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ *
++ * This driver was based on: drivers/watchdog/softdog.c
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++
++#include <linux/clk.h>
++#include <linux/reset.h>
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/watchdog.h>
++#include <linux/miscdevice.h>
++#include <linux/moduleparam.h>
++#include <linux/platform_device.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define SYSC_RSTSTAT			0x38
++#define WDT_RST_CAUSE			BIT(1)
++
++#define RALINK_WDT_TIMEOUT		30
++
++#define TIMER_REG_TMRSTAT		0x00
++#define TIMER_REG_TMR1LOAD		0x24
++#define TIMER_REG_TMR1CTL		0x20
++
++#define TMR1CTL_ENABLE			BIT(7)
++#define TMR1CTL_RESTART			BIT(9)
++
++static void __iomem *mt762x_wdt_base;
++
++static bool nowayout = WATCHDOG_NOWAYOUT;
++module_param(nowayout, bool, 0);
++MODULE_PARM_DESC(nowayout,
++		"Watchdog cannot be stopped once started (default="
++		__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
++
++static inline void rt_wdt_w32(unsigned reg, u32 val)
++{
++	iowrite32(val, mt762x_wdt_base + reg);
++}
++
++static inline u32 rt_wdt_r32(unsigned reg)
++{
++	return ioread32(mt762x_wdt_base + reg);
++}
++
++static int mt762x_wdt_ping(struct watchdog_device *w)
++{
++	rt_wdt_w32(TIMER_REG_TMRSTAT, TMR1CTL_RESTART);
++
++	return 0;
++}
++
++static int mt762x_wdt_set_timeout(struct watchdog_device *w, unsigned int t)
++{
++	w->timeout = t;
++	rt_wdt_w32(TIMER_REG_TMR1LOAD, t * 1000);
++	mt762x_wdt_ping(w);
++
++	return 0;
++}
++
++static int mt762x_wdt_start(struct watchdog_device *w)
++{
++	u32 t;
++
++	rt_wdt_w32(TIMER_REG_TMR1CTL, 1000 << 16);
++	mt762x_wdt_set_timeout(w, w->timeout);
++
++	t = rt_wdt_r32(TIMER_REG_TMR1CTL);
++	t |= TMR1CTL_ENABLE;
++	rt_wdt_w32(TIMER_REG_TMR1CTL, t);
++
++	return 0;
++}
++
++static int mt762x_wdt_stop(struct watchdog_device *w)
++{
++	u32 t;
++
++	mt762x_wdt_ping(w);
++
++	t = rt_wdt_r32(TIMER_REG_TMR1CTL);
++	t &= ~TMR1CTL_ENABLE;
++	rt_wdt_w32(TIMER_REG_TMR1CTL, t);
++
++	return 0;
++}
++
++static int mt762x_wdt_bootcause(void)
++{
++	if (rt_sysc_r32(SYSC_RSTSTAT) & WDT_RST_CAUSE)
++		return WDIOF_CARDRESET;
++
++	return 0;
++}
++
++static struct watchdog_info mt762x_wdt_info = {
++	.identity = "Mediatek Watchdog",
++	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
++};
++
++static struct watchdog_ops mt762x_wdt_ops = {
++	.owner = THIS_MODULE,
++	.start = mt762x_wdt_start,
++	.stop = mt762x_wdt_stop,
++	.ping = mt762x_wdt_ping,
++	.set_timeout = mt762x_wdt_set_timeout,
++};
++
++static struct watchdog_device mt762x_wdt_dev = {
++	.info = &mt762x_wdt_info,
++	.ops = &mt762x_wdt_ops,
++	.min_timeout = 1,
++};
++
++static int mt762x_wdt_probe(struct platform_device *pdev)
++{
++	struct resource *res;
++	int ret;
++
++	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	mt762x_wdt_base = devm_ioremap_resource(&pdev->dev, res);
++	if (IS_ERR(mt762x_wdt_base))
++		return PTR_ERR(mt762x_wdt_base);
++
++	device_reset(&pdev->dev);
++
++	mt762x_wdt_dev.dev = &pdev->dev;
++	mt762x_wdt_dev.bootstatus = mt762x_wdt_bootcause();
++	mt762x_wdt_dev.max_timeout = (0xfffful / 1000);
++	mt762x_wdt_dev.timeout = mt762x_wdt_dev.max_timeout;
++
++	watchdog_set_nowayout(&mt762x_wdt_dev, nowayout);
++
++	ret = watchdog_register_device(&mt762x_wdt_dev);
++	if (!ret)
++		dev_info(&pdev->dev, "Initialized\n");
++
++	return 0;
++}
++
++static int mt762x_wdt_remove(struct platform_device *pdev)
++{
++	watchdog_unregister_device(&mt762x_wdt_dev);
++
++	return 0;
++}
++
++static void mt762x_wdt_shutdown(struct platform_device *pdev)
++{
++	mt762x_wdt_stop(&mt762x_wdt_dev);
++}
++
++static const struct of_device_id mt762x_wdt_match[] = {
++	{ .compatible = "mtk,mt7621-wdt" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mt762x_wdt_match);
++
++static struct platform_driver mt762x_wdt_driver = {
++	.probe		= mt762x_wdt_probe,
++	.remove		= mt762x_wdt_remove,
++	.shutdown	= mt762x_wdt_shutdown,
++	.driver		= {
++		.name		= KBUILD_MODNAME,
++		.owner		= THIS_MODULE,
++		.of_match_table	= mt762x_wdt_match,
++	},
++};
++
++module_platform_driver(mt762x_wdt_driver);
++
++MODULE_DESCRIPTION("MediaTek MT762x hardware watchdog driver");
++MODULE_AUTHOR("John Crispin <[email protected]");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

target/linux/ramips/patches-4.4/0051-serial-add-ugly-custom-baud-rate-hack.patch

@@ -0,0 +1,22 @@
+From a7eb46e0ea4a11e4dfb56ab129bf816d1059a6c5 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:31:08 +0100
+Subject: [PATCH 51/53] serial: add ugly custom baud rate hack
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/tty/serial/serial_core.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/tty/serial/serial_core.c
++++ b/drivers/tty/serial/serial_core.c
+@@ -359,6 +359,9 @@ uart_get_baud_rate(struct uart_port *por
+ 		break;
+ 	}
+ 
++	if (tty_termios_baud_rate(termios) == 2500000)
++		return 250000;
++
+ 	for (try = 0; try < 2; try++) {
+ 		baud = tty_termios_baud_rate(termios);
+ 

target/linux/ramips/patches-4.4/0052-pwm-add-mediatek-support.patch

@@ -0,0 +1,217 @@
+From fc8f96309c21c1bc3276427309cd7d361347d66e Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 7 Dec 2015 17:16:50 +0100
+Subject: [PATCH 52/53] pwm: add mediatek support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/pwm/Kconfig        |    9 +++
+ drivers/pwm/Makefile       |    1 +
+ drivers/pwm/pwm-mediatek.c |  173 ++++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 183 insertions(+)
+ create mode 100644 drivers/pwm/pwm-mediatek.c
+
+--- a/drivers/pwm/Kconfig
++++ b/drivers/pwm/Kconfig
+@@ -260,6 +260,15 @@ config PWM_MTK_DISP
+ 	  To compile this driver as a module, choose M here: the module
+ 	  will be called pwm-mtk-disp.
+ 
++config PWM_MEDIATEK
++	tristate "Mediatek PWM support"
++	depends on RALINK && OF
++	help
++	  Generic PWM framework driver for Mediatek ARM SoC.
++
++	  To compile this driver as a module, choose M here: the module
++	  will be called pwm-mxs.
++
+ config PWM_MXS
+ 	tristate "Freescale MXS PWM support"
+ 	depends on ARCH_MXS && OF
+--- a/drivers/pwm/Makefile
++++ b/drivers/pwm/Makefile
+@@ -22,6 +22,7 @@ obj-$(CONFIG_PWM_LPC32XX)	+= pwm-lpc32xx
+ obj-$(CONFIG_PWM_LPSS)		+= pwm-lpss.o
+ obj-$(CONFIG_PWM_LPSS_PCI)	+= pwm-lpss-pci.o
+ obj-$(CONFIG_PWM_LPSS_PLATFORM)	+= pwm-lpss-platform.o
++obj-$(CONFIG_PWM_MEDIATEK)	+= pwm-mediatek.o
+ obj-$(CONFIG_PWM_MTK_DISP)	+= pwm-mtk-disp.o
+ obj-$(CONFIG_PWM_MXS)		+= pwm-mxs.o
+ obj-$(CONFIG_PWM_PCA9685)	+= pwm-pca9685.o
+--- /dev/null
++++ b/drivers/pwm/pwm-mediatek.c
+@@ -0,0 +1,173 @@
++/*
++ * Mediatek Pulse Width Modulator driver
++ *
++ * Copyright (C) 2015 John Crispin <[email protected]>
++ *
++ * This file is licensed under the terms of the GNU General Public
++ * License version 2. This program is licensed "as is" without any
++ * warranty of any kind, whether express or implied.
++ */
++
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/ioport.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <linux/pwm.h>
++#include <linux/slab.h>
++#include <linux/types.h>
++
++#define NUM_PWM		4
++
++/* PWM registers and bits definitions */
++#define PWMCON			0x00
++#define PWMHDUR			0x04
++#define PWMLDUR			0x08
++#define PWMGDUR			0x0c
++#define PWMWAVENUM		0x28
++#define PWMDWIDTH		0x2c
++#define PWMTHRES		0x30
++
++/**
++ * struct mtk_pwm_chip - struct representing pwm chip
++ *
++ * @mmio_base: base address of pwm chip
++ * @chip: linux pwm chip representation
++ */
++struct mtk_pwm_chip {
++	void __iomem *mmio_base;
++	struct pwm_chip chip;
++};
++
++static inline struct mtk_pwm_chip *to_mtk_pwm_chip(struct pwm_chip *chip)
++{
++	return container_of(chip, struct mtk_pwm_chip, chip);
++}
++
++static inline u32 mtk_pwm_readl(struct mtk_pwm_chip *chip, unsigned int num,
++				  unsigned long offset)
++{
++	return ioread32(chip->mmio_base + 0x10 + (num * 0x40) + offset);
++}
++
++static inline void mtk_pwm_writel(struct mtk_pwm_chip *chip,
++				    unsigned int num, unsigned long offset,
++				    unsigned long val)
++{
++	iowrite32(val, chip->mmio_base + 0x10 + (num * 0x40) + offset);
++}
++
++static int mtk_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
++			    int duty_ns, int period_ns)
++{
++	struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
++	u32 resolution = 100 / 4;
++	u32 clkdiv = 0;
++
++	while (period_ns / resolution  > 8191) {
++		clkdiv++;
++		resolution *= 2;
++	}
++
++	if (clkdiv > 7)
++		return -1;
++
++	mtk_pwm_writel(pc, pwm->hwpwm, PWMCON, BIT(15) | BIT(3) | clkdiv);
++	mtk_pwm_writel(pc, pwm->hwpwm, PWMDWIDTH, period_ns / resolution);
++	mtk_pwm_writel(pc, pwm->hwpwm, PWMTHRES, duty_ns / resolution);
++	return 0;
++}
++
++static int mtk_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
++{
++	struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
++	u32 val;
++
++	val = ioread32(pc->mmio_base);
++	val |= BIT(pwm->hwpwm);
++	iowrite32(val, pc->mmio_base);
++
++	return 0;
++}
++
++static void mtk_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
++{
++	struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip);
++	u32 val;
++
++	val = ioread32(pc->mmio_base);
++	val &= ~BIT(pwm->hwpwm);
++	iowrite32(val, pc->mmio_base);
++}
++
++static const struct pwm_ops mtk_pwm_ops = {
++	.config = mtk_pwm_config,
++	.enable = mtk_pwm_enable,
++	.disable = mtk_pwm_disable,
++	.owner = THIS_MODULE,
++};
++
++static int mtk_pwm_probe(struct platform_device *pdev)
++{
++	struct mtk_pwm_chip *pc;
++	struct resource *r;
++	int ret;
++
++	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
++	if (!pc)
++		return -ENOMEM;
++
++	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	pc->mmio_base = devm_ioremap_resource(&pdev->dev, r);
++	if (IS_ERR(pc->mmio_base))
++		return PTR_ERR(pc->mmio_base);
++
++	platform_set_drvdata(pdev, pc);
++
++	pc->chip.dev = &pdev->dev;
++	pc->chip.ops = &mtk_pwm_ops;
++	pc->chip.base = -1;
++	pc->chip.npwm = NUM_PWM;
++
++	ret = pwmchip_add(&pc->chip);
++	if (ret < 0)
++		dev_err(&pdev->dev, "pwmchip_add() failed: %d\n", ret);
++
++	return ret;
++}
++
++static int mtk_pwm_remove(struct platform_device *pdev)
++{
++	struct mtk_pwm_chip *pc = platform_get_drvdata(pdev);
++	int i;
++
++	for (i = 0; i < NUM_PWM; i++)
++		pwm_disable(&pc->chip.pwms[i]);
++
++	return pwmchip_remove(&pc->chip);
++}
++
++static const struct of_device_id mtk_pwm_of_match[] = {
++	{ .compatible = "mediatek,mt7628-pwm" },
++	{ }
++};
++
++MODULE_DEVICE_TABLE(of, mtk_pwm_of_match);
++
++static struct platform_driver mtk_pwm_driver = {
++	.driver = {
++		.name = "mtk-pwm",
++		.owner = THIS_MODULE,
++		.of_match_table = mtk_pwm_of_match,
++	},
++	.probe = mtk_pwm_probe,
++	.remove = mtk_pwm_remove,
++};
++
++module_platform_driver(mtk_pwm_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_ALIAS("platform:mtk-pwm");

target/linux/ramips/patches-4.4/0054-mtd-add-chunked-read-io-to-m25p80.patch

@@ -0,0 +1,123 @@
+--- a/drivers/mtd/spi-nor/spi-nor.c
++++ b/drivers/mtd/spi-nor/spi-nor.c
+@@ -1011,6 +1011,66 @@ write_err:
+ 	return ret;
+ }
+ 
++static int spi_nor_chunked_write(struct mtd_info *mtd, loff_t _to, size_t _len,
++				 size_t *_retlen, const u_char *_buf)
++{
++	struct spi_nor *nor = mtd_to_spi_nor(mtd);
++	int chunk_size;
++	int retlen = 0;
++	int ret;
++
++	chunk_size = nor->chunk_size;
++	if (!chunk_size)
++		chunk_size = _len;
++
++	if (nor->addr_width > 3)
++		chunk_size -= nor->addr_width - 3;
++
++	while (retlen < _len) {
++		size_t len = min_t(int, chunk_size, _len - retlen);
++		const u_char *buf = _buf + retlen;
++		loff_t to = _to + retlen;
++
++		if (nor->flags & SNOR_F_SST)
++			ret = sst_write(mtd, to, len, &retlen, buf);
++		else
++			ret = spi_nor_write(mtd, to, len, &retlen, buf);
++		if (ret)
++			return ret;
++	}
++
++	*_retlen += retlen;
++	return 0;
++}
++
++static int spi_nor_chunked_read(struct mtd_info *mtd, loff_t _from, size_t _len,
++				size_t *_retlen, u_char *_buf)
++{
++	struct spi_nor *nor = mtd_to_spi_nor(mtd);
++	int chunk_size;
++	int ret;
++
++	chunk_size = nor->chunk_size;
++	if (!chunk_size)
++		chunk_size = _len;
++
++	*_retlen = 0;
++	while (*_retlen < _len) {
++		size_t len = min_t(int, chunk_size, _len - *_retlen);
++		u_char *buf = _buf + *_retlen;
++		loff_t from = _from + *_retlen;
++		int retlen = 0;
++
++		ret = spi_nor_read(mtd, from, len, &retlen, buf);
++		if (ret)
++			return ret;
++
++		*_retlen += retlen;
++	}
++
++	return 0;
++}
++
+ static int macronix_quad_enable(struct spi_nor *nor)
+ {
+ 	int ret, val;
+@@ -1232,10 +1292,12 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	}
+ 
+ 	/* sst nor chips use AAI word program */
+-	if (info->flags & SST_WRITE)
++	if (info->flags & SST_WRITE) {
+ 		mtd->_write = sst_write;
+-	else
++		nor->flags |= SNOR_F_SST;
++	} else {
+ 		mtd->_write = spi_nor_write;
++	}
+ 
+ 	if (info->flags & USE_FSR)
+ 		nor->flags |= SNOR_F_USE_FSR;
+@@ -1263,11 +1325,20 @@ int spi_nor_scan(struct spi_nor *nor, co
+ 	mtd->writebufsize = nor->page_size;
+ 
+ 	if (np) {
++		u32 val;
++
+ 		/* If we were instantiated by DT, use it */
+ 		if (of_property_read_bool(np, "m25p,fast-read"))
+ 			nor->flash_read = SPI_NOR_FAST;
+ 		else
+ 			nor->flash_read = SPI_NOR_NORMAL;
++
++		if (!of_property_read_u32(np, "m25p,chunked-io", &val)) {
++			dev_info(dev, "using chunked io (size=%d)\n", val);
++			mtd->_read = spi_nor_chunked_read;
++			mtd->_write = spi_nor_chunked_write;
++			nor->chunk_size = val;
++		}
+ 	} else {
+ 		/* If we weren't instantiated by DT, default to fast-read */
+ 		nor->flash_read = SPI_NOR_FAST;
+--- a/include/linux/mtd/spi-nor.h
++++ b/include/linux/mtd/spi-nor.h
+@@ -116,6 +116,7 @@ enum spi_nor_ops {
+ 
+ enum spi_nor_option_flags {
+ 	SNOR_F_USE_FSR		= BIT(0),
++	SNOR_F_SST		= BIT(1),
+ };
+ 
+ /**
+@@ -156,6 +157,7 @@ struct spi_nor {
+ 	struct device		*dev;
+ 	struct device_node	*flash_node;
+ 	u32			page_size;
++	u16			chunk_size;
+ 	u8			addr_width;
+ 	u8			erase_opcode;
+ 	u8			read_opcode;

target/linux/ramips/patches-4.4/0059-correct-CPC_BASE_MASK.patch

@@ -0,0 +1,13 @@
+--- a/arch/mips/include/asm/mips-cm.h
++++ b/arch/mips/include/asm/mips-cm.h
+@@ -286,8 +286,8 @@ BUILD_CM_Cx_R_(tcid_8_priority,	0x80)
+ #define CM_GCR_GIC_BASE_GICEN_MSK		(_ULCAST_(0x1) << 0)
+ 
+ /* GCR_CPC_BASE register fields */
+-#define CM_GCR_CPC_BASE_CPCBASE_SHF		17
+-#define CM_GCR_CPC_BASE_CPCBASE_MSK		(_ULCAST_(0x7fff) << 17)
++#define CM_GCR_CPC_BASE_CPCBASE_SHF		15
++#define CM_GCR_CPC_BASE_CPCBASE_MSK		(_ULCAST_(0x1ffff) << 15)
+ #define CM_GCR_CPC_BASE_CPCEN_SHF		0
+ #define CM_GCR_CPC_BASE_CPCEN_MSK		(_ULCAST_(0x1) << 0)
+ 

target/linux/ramips/patches-4.4/0063-set-CM_GCR_BASE_CMDEFTGT_MEM-according-to-datasheet.patch

@@ -0,0 +1,12 @@
+--- a/arch/mips/include/asm/mips-cm.h
++++ b/arch/mips/include/asm/mips-cm.h
+@@ -238,8 +238,7 @@ BUILD_CM_Cx_R_(tcid_8_priority,	0x80)
+ #define CM_GCR_BASE_GCRBASE_MSK			(_ULCAST_(0x1ffff) << 15)
+ #define CM_GCR_BASE_CMDEFTGT_SHF		0
+ #define CM_GCR_BASE_CMDEFTGT_MSK		(_ULCAST_(0x3) << 0)
+-#define  CM_GCR_BASE_CMDEFTGT_DISABLED		0
+-#define  CM_GCR_BASE_CMDEFTGT_MEM		1
++#define  CM_GCR_BASE_CMDEFTGT_MEM		0
+ #define  CM_GCR_BASE_CMDEFTGT_IOCU0		2
+ #define  CM_GCR_BASE_CMDEFTGT_IOCU1		3
+ 

target/linux/ramips/patches-4.4/0064-add_clk_round_rate.patch

@@ -0,0 +1,15 @@
+--- a/arch/mips/ralink/clk.c
++++ b/arch/mips/ralink/clk.c
+@@ -62,6 +62,12 @@ int clk_set_rate(struct clk *clk, unsign
+ }
+ EXPORT_SYMBOL_GPL(clk_set_rate);
+ 
++long clk_round_rate(struct clk *clk, unsigned long rate)
++{
++	return -1;
++}
++EXPORT_SYMBOL_GPL(clk_round_rate);
++
+ void __init plat_time_init(void)
+ {
+ 	struct clk *clk;

target/linux/ramips/patches-4.4/0066-mt7621-enable-highmem.patch

@@ -0,0 +1,10 @@
+--- a/arch/mips/ralink/Kconfig
++++ b/arch/mips/ralink/Kconfig
+@@ -51,6 +51,7 @@ choice
+ 		select SYS_SUPPORTS_MULTITHREADING
+ 		select SYS_SUPPORTS_SMP
+ 		select SYS_SUPPORTS_MIPS_CPS
++		select SYS_SUPPORTS_HIGHMEM
+ 		select MIPS_GIC
+ 		select COMMON_CLK
+ 		select CLKSRC_MIPS_GIC

target/linux/ramips/patches-4.4/0067-enable-mt7621-xhci.patch

@@ -0,0 +1,14 @@
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -42,9 +42,9 @@ config USB_XHCI_PLATFORM
+ 	  If unsure, say N.
+ 
+ config USB_XHCI_MTK
+-	tristate "xHCI support for Mediatek MT65xx"
++	tristate "xHCI support for Mediatek MT65xx/MT7621"
+ 	select MFD_SYSCON
+-	depends on ARCH_MEDIATEK || COMPILE_TEST
++	depends on SOC_MT7621 || ARCH_MEDIATEK || COMPILE_TEST
+ 	---help---
+ 	  Say 'Y' to enable the support for the xHCI host controller
+ 	  found in Mediatek MT65xx SoCs.

target/linux/ramips/patches-4.4/0068-fix-ralink-prom.c

@@ -0,0 +1,30 @@
+--- a/arch/mips/ralink/prom.c
++++ b/arch/mips/ralink/prom.c
+@@ -30,8 +30,10 @@ const char *get_system_type(void)
+ 	return soc_info.sys_type;
+ }
+ 
+-static __init void prom_init_cmdline(int argc, char **argv)
++static __init void prom_init_cmdline(void)
+ {
++	int argc;
++	char **argv;
+ 	int i;
+ 
+ 	pr_debug("prom: fw_arg0=%08x fw_arg1=%08x fw_arg2=%08x fw_arg3=%08x\n",
+@@ -60,14 +62,11 @@ static __init void prom_init_cmdline(int
+ 
+ void __init prom_init(void)
+ {
+-	int argc;
+-	char **argv;
+-
+ 	prom_soc_init(&soc_info);
+ 
+ 	pr_info("SoC Type: %s\n", get_system_type());
+ 
+-	prom_init_cmdline(argc, argv);
++	prom_init_cmdline();
+ }
+ 
+ void __init prom_free_prom_memory(void)

target/linux/ramips/patches-4.4/0103-MIPS-OWRTDTB.patch

@@ -0,0 +1,44 @@
+From c174d2250e402399ad7dbdd57d51883d8804bba0 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 15 Jul 2013 00:40:37 +0200
+Subject: [PATCH 31/33] owrt: MIPS: add OWRTDTB secion
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ arch/mips/kernel/head.S   |    3 +++
+ arch/mips/ralink/Makefile |    2 +-
+ arch/mips/ralink/of.c     |    4 +++-
+ 3 files changed, 7 insertions(+), 2 deletions(-)
+
+--- a/arch/mips/kernel/head.S
++++ b/arch/mips/kernel/head.S
+@@ -86,6 +86,9 @@ EXPORT(__image_cmdline)
+ 	.fill	0x400
+ #endif /* CONFIG_IMAGE_CMDLINE_HACK */
+ 
++	.ascii  "OWRTDTB:"
++	EXPORT(__image_dtb)
++	.fill   0x4000
+ 	__REF
+ 
+ NESTED(kernel_entry, 16, sp)			# kernel entry point
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -66,6 +66,8 @@ static int __init early_init_dt_find_mem
+ 	return 0;
+ }
+ 
++extern struct boot_param_header __image_dtb;
++
+ void __init plat_mem_setup(void)
+ {
+ 	set_io_port_base(KSEG1);
+@@ -74,7 +76,7 @@ void __init plat_mem_setup(void)
+ 	 * Load the builtin devicetree. This causes the chosen node to be
+ 	 * parsed resulting in our memory appearing
+ 	 */
+-	__dt_setup_arch(__dtb_start);
++	__dt_setup_arch(&__image_dtb);
+ 
+ 	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+ 

target/linux/ramips/patches-4.4/0104-fix_bootargs_handling.patch

@@ -0,0 +1,40 @@
+--- a/arch/mips/ralink/of.c
++++ b/arch/mips/ralink/of.c
+@@ -3,7 +3,7 @@
+  * under the terms of the GNU General Public License version 2 as published
+  * by the Free Software Foundation.
+  *
+- * Copyright (C) 2008 Imre Kaloz <[email protected]>
++ * Copyright (C) 2008-2014 Imre Kaloz <[email protected]>
+  * Copyright (C) 2008-2009 Gabor Juhos <[email protected]>
+  * Copyright (C) 2013 John Crispin <[email protected]>
+  */
+@@ -66,6 +66,17 @@ static int __init early_init_dt_find_mem
+ 	return 0;
+ }
+ 
++static int chosen_dtb;
++
++static int __init early_init_dt_find_chosen(unsigned long node, const char *uname,
++				     int depth, void *data)
++{
++	if (depth == 1 && !strcmp(uname, "chosen"))
++		chosen_dtb = 1;
++
++	return 0;
++}
++
+ extern struct boot_param_header __image_dtb;
+ 
+ void __init plat_mem_setup(void)
+@@ -78,7 +89,9 @@ void __init plat_mem_setup(void)
+ 	 */
+ 	__dt_setup_arch(&__image_dtb);
+ 
+-	strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
++	of_scan_flat_dt(early_init_dt_find_chosen, NULL);
++	if (chosen_dtb)
++		strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
+ 
+ 	of_scan_flat_dt(early_init_dt_find_memory, NULL);
+ 	if (memory_dtb)

target/linux/ramips/patches-4.4/0200-linkit_bootstrap.patch

@@ -0,0 +1,94 @@
+--- a/drivers/misc/Makefile
++++ b/drivers/misc/Makefile
+@@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE)		+= genwqe/
+ obj-$(CONFIG_ECHO)		+= echo/
+ obj-$(CONFIG_VEXPRESS_SYSCFG)	+= vexpress-syscfg.o
+ obj-$(CONFIG_CXL_BASE)		+= cxl/
++obj-$(CONFIG_SOC_MT7620)	+= linkit.o
+--- /dev/null
++++ b/drivers/misc/linkit.c
+@@ -0,0 +1,84 @@
++/*
++ *  This program is free software; you can redistribute it and/or modify
++ *  it under the terms of the GNU General Public License version 2 as
++ *  publishhed by the Free Software Foundation.
++ *
++ *  Copyright (C) 2015 John Crispin <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/of.h>
++#include <linux/mtd/mtd.h>
++#include <linux/gpio.h>
++
++#define LINKIT_LATCH_GPIO	11
++
++struct linkit_hw_data {
++	char board[16];
++	char rev[16];
++};
++
++static void sanify_string(char *s)
++{
++	int i;
++
++	for (i = 0; i < 15; i++)
++		if (s[i] <= 0x20)
++			s[i] = '\0';
++	s[15] = '\0';
++}
++
++static int linkit_probe(struct platform_device *pdev)
++{
++	struct linkit_hw_data hw;
++	struct mtd_info *mtd;
++	size_t retlen;
++	int ret;
++
++	mtd = get_mtd_device_nm("factory");
++	if (IS_ERR(mtd))
++		return PTR_ERR(mtd);
++
++	ret = mtd_read(mtd, 0x400, sizeof(hw), &retlen, (u_char *) &hw);
++	put_mtd_device(mtd);
++
++	sanify_string(hw.board);
++	sanify_string(hw.rev);
++
++	dev_info(&pdev->dev, "Version  : %s\n", hw.board);
++	dev_info(&pdev->dev, "Revision : %s\n", hw.rev);
++
++	if (!strcmp(hw.board, "LINKITS7688")) {
++		dev_info(&pdev->dev, "setting up bootstrap latch\n");
++
++		if (devm_gpio_request(&pdev->dev, LINKIT_LATCH_GPIO, "bootstrap")) {
++			dev_err(&pdev->dev, "failed to setup bootstrap gpio\n");
++			return -1;
++		}
++		gpio_direction_output(LINKIT_LATCH_GPIO, 0);
++	}
++
++	return 0;
++}
++
++static const struct of_device_id linkit_match[] = {
++	{ .compatible = "mediatek,linkit" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, linkit_match);
++
++static struct platform_driver linkit_driver = {
++	.probe = linkit_probe,
++	.driver = {
++		.name = "mtk-linkit",
++		.owner = THIS_MODULE,
++		.of_match_table = linkit_match,
++	},
++};
++
++int __init linkit_init(void)
++{
++	return platform_driver_register(&linkit_driver);
++}
++late_initcall_sync(linkit_init);

target/linux/ramips/patches-4.4/0500-Documentation-DT-net-add-docs-for-ralink-mediatek-So.patch

@@ -0,0 +1,150 @@
+From 9c2487f148ee38807d86beaf12dc2b818a764a99 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Tue, 17 Nov 2015 00:20:07 +0100
+Subject: [PATCH 500/513] Documentation: DT: net: add docs for ralink/mediatek
+ SoC ethernet binding
+
+Add three files. ralink,rt2880-net.txt  descibes the actual frame engine
+and the other two describe the switch forntend bindings.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+Cc: [email protected]
+---
+ .../bindings/net/mediatek,mt7620-gsw.txt           |   26 +++++++++
+ .../devicetree/bindings/net/ralink,rt2880-net.txt  |   61 ++++++++++++++++++++
+ .../devicetree/bindings/net/ralink,rt3050-esw.txt  |   32 ++++++++++
+ 3 files changed, 119 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/net/mediatek,mt7620-gsw.txt
+ create mode 100644 Documentation/devicetree/bindings/net/ralink,rt2880-net.txt
+ create mode 100644 Documentation/devicetree/bindings/net/ralink,rt3050-esw.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/mediatek,mt7620-gsw.txt
+@@ -0,0 +1,26 @@
++Mediatek Gigabit Switch
++=======================
++
++The mediatek gigabit switch can be found on Mediatek SoCs (mt7620, mt7621).
++
++Required properties:
++- compatible: Should be "mediatek,mt7620-gsw"
++- reg: Address and length of the register set for the device
++- interrupt-parent: Should be the phandle for the interrupt controller
++  that services interrupts for this device
++- interrupts: Should contain the gigabit switches interrupt
++- resets: Should contain the gigabit switches resets
++- reset-names: Should contain the reset names "gsw"
++
++Example:
++
++gsw@10110000 {
++	compatible = "ralink,mt7620-gsw";
++	reg = <0x10110000 8000>;
++
++	resets = <&rstctrl 23>;
++	reset-names = "gsw";
++
++	interrupt-parent = <&intc>;
++	interrupts = <17>;
++};
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/ralink,rt2880-net.txt
+@@ -0,0 +1,61 @@
++Ralink Frame Engine Ethernet controller
++=======================================
++
++The Ralink frame engine ethernet controller can be found on Ralink and
++Mediatek SoCs (RT288x, RT3x5x, RT366x, RT388x, rt5350, mt7620, mt7621, mt76x8).
++
++Depending on the SoC, there is a number of ports connected to the CPU port
++directly and/or via a (gigabit-)switch.
++
++* Ethernet controller node
++
++Required properties:
++- compatible: Should be one of "ralink,rt2880-eth", "ralink,rt3050-eth",
++  "ralink,rt3050-eth", "ralink,rt3883-eth", "ralink,rt5350-eth",
++  "mediatek,mt7620-eth", "mediatek,mt7621-eth"
++- reg: Address and length of the register set for the device
++- interrupt-parent: Should be the phandle for the interrupt controller
++  that services interrupts for this device
++- interrupts: Should contain the frame engines interrupt
++- resets: Should contain the frame engines resets
++- reset-names: Should contain the reset names "fe". If a switch is present
++  "esw" is also required.
++
++
++* Ethernet port node
++
++Required properties:
++- compatible: Should be "ralink,eth-port"
++- reg: The number of the physical port
++- phy-handle: reference to the node describing the phy
++
++Example:
++
++mdio-bus {
++	...
++	phy0: ethernet-phy@0 {
++		phy-mode = "mii";
++		reg = <0>;
++	};
++};
++
++ethernet@400000 {
++	compatible = "ralink,rt2880-eth";
++	reg = <0x00400000 10000>;
++
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	resets = <&rstctrl 18>;
++	reset-names = "fe";
++
++	interrupt-parent = <&cpuintc>;
++	interrupts = <5>;
++
++	port@0 {
++		compatible = "ralink,eth-port";
++		reg = <0>;
++		phy-handle = <&phy0>;
++	};
++
++};
+--- /dev/null
++++ b/Documentation/devicetree/bindings/net/ralink,rt3050-esw.txt
+@@ -0,0 +1,32 @@
++Ralink Fast Ethernet Embedded Switch
++====================================
++
++The ralink fast ethernet embedded switch can be found on Ralink and Mediatek
++SoCs (RT3x5x, rt5350, mt76x8).
++
++Required properties:
++- compatible: Should be "ralink,rt3050-esw"
++- reg: Address and length of the register set for the device
++- interrupt-parent: Should be the phandle for the interrupt controller
++  that services interrupts for this device
++- interrupts: Should contain the embedded switches interrupt
++- resets: Should contain the embedded switches resets
++- reset-names: Should contain the reset names "esw"
++
++Optional properties:
++- ralink,portmap: can be used to choose if the default switch setup is
++  llllw or wllll
++- ralink,led_polarity: override the active high/low settings of the leds
++
++Example:
++
++esw@10110000 {
++	compatible = "ralink,rt3050-esw";
++	reg = <0x10110000 8000>;
++
++	resets = <&rstctrl 23>;
++	reset-names = "esw";
++
++	interrupt-parent = <&intc>;
++	interrupts = <17>;
++};

target/linux/ramips/patches-4.4/0501-net-next-mediatek-add-the-drivers-core-files.patch

@@ -0,0 +1,2735 @@
+From 2abe91b53ca4d2528ef1fc9c44c6e69f8c805776 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Wed, 18 Nov 2015 03:12:19 +0100
+Subject: [PATCH 501/513] net-next: mediatek: add the drivers core files
+
+This patch adds the main chunk of the driver. The ethernet core is used in all
+of the Mediatek/Ralink Wireless SoCs. Over the years we have seen verious
+changes to
+
+* the register layout
+* the type of ports (single/dual gbit, internal FE/Gbit switch)
+* dma engine
+
+and new offloading features were added, such as
+
+* checksum
+* vlan tx/rx
+* gso
+* lro
+
+However the core functionality has remained the sama allowing us to use the
+same core for all SoCs.
+
+The abstraction for the various SoCs uses the typical ops struct pattern which
+allows us to extend or override the cores functionality depending on which SoC
+we are on. The code to bring up the switches and external ports has also been
+split into separate files.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/ethtool.c     |  235 ++++
+ drivers/net/ethernet/mediatek/ethtool.h     |   22 +
+ drivers/net/ethernet/mediatek/mdio.c        |  258 +++++
+ drivers/net/ethernet/mediatek/mdio.h        |   27 +
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 1607 +++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h |  522 +++++++++
+ 6 files changed, 2671 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/ethtool.c
+ create mode 100644 drivers/net/ethernet/mediatek/ethtool.h
+ create mode 100644 drivers/net/ethernet/mediatek/mdio.c
+ create mode 100644 drivers/net/ethernet/mediatek/mdio.h
+ create mode 100644 drivers/net/ethernet/mediatek/mtk_eth_soc.c
+ create mode 100644 drivers/net/ethernet/mediatek/mtk_eth_soc.h
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/ethtool.c
+@@ -0,0 +1,235 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include "mtk_eth_soc.h"
++
++static const char fe_gdma_str[][ETH_GSTRING_LEN] = {
++#define _FE(x...)	# x,
++FE_STAT_REG_DECLARE
++#undef _FE
++};
++
++static int fe_get_settings(struct net_device *dev,
++			   struct ethtool_cmd *cmd)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	int err;
++
++	if (!priv->phy_dev)
++		goto out_gset;
++
++	if (priv->phy_flags == FE_PHY_FLAG_ATTACH) {
++		err = phy_read_status(priv->phy_dev);
++		if (err)
++			goto out_gset;
++	}
++
++	return phy_ethtool_gset(priv->phy_dev, cmd);
++
++out_gset:
++	return -ENODEV;
++}
++
++static int fe_set_settings(struct net_device *dev,
++			   struct ethtool_cmd *cmd)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	if (!priv->phy_dev)
++		goto out_sset;
++
++	if (cmd->phy_address != priv->phy_dev->addr) {
++		if (priv->phy->phy_node[cmd->phy_address]) {
++			priv->phy_dev = priv->phy->phy[cmd->phy_address];
++			priv->phy_flags = FE_PHY_FLAG_PORT;
++		} else if (priv->mii_bus &&
++			   priv->mii_bus->phy_map[cmd->phy_address]) {
++			priv->phy_dev =
++				priv->mii_bus->phy_map[cmd->phy_address];
++			priv->phy_flags = FE_PHY_FLAG_ATTACH;
++		} else {
++			goto out_sset;
++		}
++	}
++
++	return phy_ethtool_sset(priv->phy_dev, cmd);
++
++out_sset:
++	return -ENODEV;
++}
++
++static void fe_get_drvinfo(struct net_device *dev,
++			   struct ethtool_drvinfo *info)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct fe_soc_data *soc = priv->soc;
++
++	strlcpy(info->driver, priv->device->driver->name, sizeof(info->driver));
++	strlcpy(info->version, MTK_FE_DRV_VERSION, sizeof(info->version));
++	strlcpy(info->bus_info, dev_name(priv->device), sizeof(info->bus_info));
++
++	if (soc->reg_table[FE_REG_FE_COUNTER_BASE])
++		info->n_stats = ARRAY_SIZE(fe_gdma_str);
++}
++
++static u32 fe_get_msglevel(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	return priv->msg_enable;
++}
++
++static void fe_set_msglevel(struct net_device *dev, u32 value)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	priv->msg_enable = value;
++}
++
++static int fe_nway_reset(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	if (!priv->phy_dev)
++		goto out_nway_reset;
++
++	return genphy_restart_aneg(priv->phy_dev);
++
++out_nway_reset:
++	return -EOPNOTSUPP;
++}
++
++static u32 fe_get_link(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	int err;
++
++	if (!priv->phy_dev)
++		goto out_get_link;
++
++	if (priv->phy_flags == FE_PHY_FLAG_ATTACH) {
++		err = genphy_update_link(priv->phy_dev);
++		if (err)
++			goto out_get_link;
++	}
++
++	return priv->phy_dev->link;
++
++out_get_link:
++	return ethtool_op_get_link(dev);
++}
++
++static int fe_set_ringparam(struct net_device *dev,
++			    struct ethtool_ringparam *ring)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	if ((ring->tx_pending < 2) ||
++	    (ring->rx_pending < 2) ||
++	    (ring->rx_pending > MAX_DMA_DESC) ||
++	    (ring->tx_pending > MAX_DMA_DESC))
++		return -EINVAL;
++
++	dev->netdev_ops->ndo_stop(dev);
++
++	priv->tx_ring.tx_ring_size = BIT(fls(ring->tx_pending) - 1);
++	priv->rx_ring.rx_ring_size = BIT(fls(ring->rx_pending) - 1);
++
++	dev->netdev_ops->ndo_open(dev);
++
++	return 0;
++}
++
++static void fe_get_ringparam(struct net_device *dev,
++			     struct ethtool_ringparam *ring)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	ring->rx_max_pending = MAX_DMA_DESC;
++	ring->tx_max_pending = MAX_DMA_DESC;
++	ring->rx_pending = priv->rx_ring.rx_ring_size;
++	ring->tx_pending = priv->tx_ring.tx_ring_size;
++}
++
++static void fe_get_strings(struct net_device *dev, u32 stringset, u8 *data)
++{
++	switch (stringset) {
++	case ETH_SS_STATS:
++		memcpy(data, *fe_gdma_str, sizeof(fe_gdma_str));
++		break;
++	}
++}
++
++static int fe_get_sset_count(struct net_device *dev, int sset)
++{
++	switch (sset) {
++	case ETH_SS_STATS:
++		return ARRAY_SIZE(fe_gdma_str);
++	default:
++		return -EOPNOTSUPP;
++	}
++}
++
++static void fe_get_ethtool_stats(struct net_device *dev,
++				 struct ethtool_stats *stats, u64 *data)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct fe_hw_stats *hwstats = priv->hw_stats;
++	u64 *data_src, *data_dst;
++	unsigned int start;
++	int i;
++
++	if (netif_running(dev) && netif_device_present(dev)) {
++		if (spin_trylock(&hwstats->stats_lock)) {
++			fe_stats_update(priv);
++			spin_unlock(&hwstats->stats_lock);
++		}
++	}
++
++	do {
++		data_src = &hwstats->tx_bytes;
++		data_dst = data;
++		start = u64_stats_fetch_begin_irq(&hwstats->syncp);
++
++		for (i = 0; i < ARRAY_SIZE(fe_gdma_str); i++)
++			*data_dst++ = *data_src++;
++
++	} while (u64_stats_fetch_retry_irq(&hwstats->syncp, start));
++}
++
++static struct ethtool_ops fe_ethtool_ops = {
++	.get_settings		= fe_get_settings,
++	.set_settings		= fe_set_settings,
++	.get_drvinfo		= fe_get_drvinfo,
++	.get_msglevel		= fe_get_msglevel,
++	.set_msglevel		= fe_set_msglevel,
++	.nway_reset		= fe_nway_reset,
++	.get_link		= fe_get_link,
++	.set_ringparam		= fe_set_ringparam,
++	.get_ringparam		= fe_get_ringparam,
++};
++
++void fe_set_ethtool_ops(struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++	struct fe_soc_data *soc = priv->soc;
++
++	if (soc->reg_table[FE_REG_FE_COUNTER_BASE]) {
++		fe_ethtool_ops.get_strings = fe_get_strings;
++		fe_ethtool_ops.get_sset_count = fe_get_sset_count;
++		fe_ethtool_ops.get_ethtool_stats = fe_get_ethtool_stats;
++	}
++
++	netdev->ethtool_ops = &fe_ethtool_ops;
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/ethtool.h
+@@ -0,0 +1,22 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef FE_ETHTOOL_H
++#define FE_ETHTOOL_H
++
++#include <linux/ethtool.h>
++
++void fe_set_ethtool_ops(struct net_device *netdev);
++
++#endif /* FE_ETHTOOL_H */
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio.c
+@@ -0,0 +1,258 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/phy.h>
++#include <linux/of_net.h>
++#include <linux/of_mdio.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio.h"
++
++static int fe_mdio_reset(struct mii_bus *bus)
++{
++	/* TODO */
++	return 0;
++}
++
++static void fe_phy_link_adjust(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	unsigned long flags;
++	int i;
++
++	spin_lock_irqsave(&priv->phy->lock, flags);
++	for (i = 0; i < 8; i++) {
++		if (priv->phy->phy_node[i]) {
++			struct phy_device *phydev = priv->phy->phy[i];
++			int status_change = 0;
++
++			if (phydev->link)
++				if (priv->phy->duplex[i] != phydev->duplex ||
++				    priv->phy->speed[i] != phydev->speed)
++					status_change = 1;
++
++			if (phydev->link != priv->link[i])
++				status_change = 1;
++
++			switch (phydev->speed) {
++			case SPEED_1000:
++			case SPEED_100:
++			case SPEED_10:
++				priv->link[i] = phydev->link;
++				priv->phy->duplex[i] = phydev->duplex;
++				priv->phy->speed[i] = phydev->speed;
++
++				if (status_change &&
++				    priv->soc->mdio_adjust_link)
++					priv->soc->mdio_adjust_link(priv, i);
++				break;
++			}
++		}
++	}
++}
++
++int fe_connect_phy_node(struct fe_priv *priv, struct device_node *phy_node)
++{
++	const __be32 *_port = NULL;
++	struct phy_device *phydev;
++	int phy_mode, port;
++
++	_port = of_get_property(phy_node, "reg", NULL);
++
++	if (!_port || (be32_to_cpu(*_port) >= 0x20)) {
++		pr_err("%s: invalid port id\n", phy_node->name);
++		return -EINVAL;
++	}
++	port = be32_to_cpu(*_port);
++	phy_mode = of_get_phy_mode(phy_node);
++	if (phy_mode < 0) {
++		dev_err(priv->device, "incorrect phy-mode %d\n", phy_mode);
++		priv->phy->phy_node[port] = NULL;
++		return -EINVAL;
++	}
++
++	phydev = of_phy_connect(priv->netdev, phy_node, fe_phy_link_adjust,
++				0, phy_mode);
++	if (IS_ERR(phydev)) {
++		dev_err(priv->device, "could not connect to PHY\n");
++		priv->phy->phy_node[port] = NULL;
++		return PTR_ERR(phydev);
++	}
++
++	phydev->supported &= PHY_GBIT_FEATURES;
++	phydev->advertising = phydev->supported;
++
++	dev_info(priv->device,
++		 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
++		 port, dev_name(&phydev->dev), phydev->phy_id,
++		 phydev->drv->name);
++
++	priv->phy->phy[port] = phydev;
++	priv->link[port] = 0;
++
++	return 0;
++}
++
++static void phy_init(struct fe_priv *priv, struct phy_device *phy)
++{
++	phy_attach(priv->netdev, dev_name(&phy->dev), PHY_INTERFACE_MODE_MII);
++
++	phy->autoneg = AUTONEG_ENABLE;
++	phy->speed = 0;
++	phy->duplex = 0;
++	phy->supported &= PHY_BASIC_FEATURES;
++	phy->advertising = phy->supported | ADVERTISED_Autoneg;
++
++	phy_start_aneg(phy);
++}
++
++static int fe_phy_connect(struct fe_priv *priv)
++{
++	int i;
++
++	for (i = 0; i < 8; i++) {
++		if (priv->phy->phy_node[i]) {
++			if (!priv->phy_dev) {
++				priv->phy_dev = priv->phy->phy[i];
++				priv->phy_flags = FE_PHY_FLAG_PORT;
++			}
++		} else if (priv->mii_bus && priv->mii_bus->phy_map[i]) {
++			phy_init(priv, priv->mii_bus->phy_map[i]);
++			if (!priv->phy_dev) {
++				priv->phy_dev = priv->mii_bus->phy_map[i];
++				priv->phy_flags = FE_PHY_FLAG_ATTACH;
++			}
++		}
++	}
++
++	return 0;
++}
++
++static void fe_phy_disconnect(struct fe_priv *priv)
++{
++	unsigned long flags;
++	int i;
++
++	for (i = 0; i < 8; i++)
++		if (priv->phy->phy_fixed[i]) {
++			spin_lock_irqsave(&priv->phy->lock, flags);
++			priv->link[i] = 0;
++			if (priv->soc->mdio_adjust_link)
++				priv->soc->mdio_adjust_link(priv, i);
++			spin_unlock_irqrestore(&priv->phy->lock, flags);
++		} else if (priv->phy->phy[i]) {
++			phy_disconnect(priv->phy->phy[i]);
++		} else if (priv->mii_bus && priv->mii_bus->phy_map[i]) {
++			phy_detach(priv->mii_bus->phy_map[i]);
++		}
++}
++
++static void fe_phy_start(struct fe_priv *priv)
++{
++	unsigned long flags;
++	int i;
++
++	for (i = 0; i < 8; i++) {
++		if (priv->phy->phy_fixed[i]) {
++			spin_lock_irqsave(&priv->phy->lock, flags);
++			priv->link[i] = 1;
++			if (priv->soc->mdio_adjust_link)
++				priv->soc->mdio_adjust_link(priv, i);
++			spin_unlock_irqrestore(&priv->phy->lock, flags);
++		} else if (priv->phy->phy[i]) {
++			phy_start(priv->phy->phy[i]);
++		}
++	}
++}
++
++static void fe_phy_stop(struct fe_priv *priv)
++{
++	unsigned long flags;
++	int i;
++
++	for (i = 0; i < 8; i++)
++		if (priv->phy->phy_fixed[i]) {
++			spin_lock_irqsave(&priv->phy->lock, flags);
++			priv->link[i] = 0;
++			if (priv->soc->mdio_adjust_link)
++				priv->soc->mdio_adjust_link(priv, i);
++			spin_unlock_irqrestore(&priv->phy->lock, flags);
++		} else if (priv->phy->phy[i]) {
++			phy_stop(priv->phy->phy[i]);
++		}
++}
++
++static struct fe_phy phy_ralink = {
++	.connect = fe_phy_connect,
++	.disconnect = fe_phy_disconnect,
++	.start = fe_phy_start,
++	.stop = fe_phy_stop,
++};
++
++int fe_mdio_init(struct fe_priv *priv)
++{
++	struct device_node *mii_np;
++	int err;
++
++	if (!priv->soc->mdio_read || !priv->soc->mdio_write)
++		return 0;
++
++	spin_lock_init(&phy_ralink.lock);
++	priv->phy = &phy_ralink;
++
++	mii_np = of_get_child_by_name(priv->device->of_node, "mdio-bus");
++	if (!mii_np) {
++		dev_err(priv->device, "no %s child node found", "mdio-bus");
++		return -ENODEV;
++	}
++
++	if (!of_device_is_available(mii_np)) {
++		err = 0;
++		goto err_put_node;
++	}
++
++	priv->mii_bus = mdiobus_alloc();
++	if (!priv->mii_bus) {
++		err = -ENOMEM;
++		goto err_put_node;
++	}
++
++	priv->mii_bus->name = "mdio";
++	priv->mii_bus->read = priv->soc->mdio_read;
++	priv->mii_bus->write = priv->soc->mdio_write;
++	priv->mii_bus->reset = fe_mdio_reset;
++	priv->mii_bus->priv = priv;
++	priv->mii_bus->parent = priv->device;
++
++	snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s", mii_np->name);
++	err = of_mdiobus_register(priv->mii_bus, mii_np);
++	if (err)
++		goto err_free_bus;
++
++	return 0;
++
++err_free_bus:
++	kfree(priv->mii_bus);
++err_put_node:
++	of_node_put(mii_np);
++	priv->mii_bus = NULL;
++	return err;
++}
++
++void fe_mdio_cleanup(struct fe_priv *priv)
++{
++	if (!priv->mii_bus)
++		return;
++
++	mdiobus_unregister(priv->mii_bus);
++	of_node_put(priv->mii_bus->dev.of_node);
++	kfree(priv->mii_bus);
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio.h
+@@ -0,0 +1,27 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef _RALINK_MDIO_H__
++#define _RALINK_MDIO_H__
++
++#ifdef CONFIG_NET_MEDIATEK_MDIO
++int fe_mdio_init(struct fe_priv *priv);
++void fe_mdio_cleanup(struct fe_priv *priv);
++int fe_connect_phy_node(struct fe_priv *priv,
++			struct device_node *phy_node);
++#else
++static inline int fe_mdio_init(struct fe_priv *priv) { return 0; }
++static inline void fe_mdio_cleanup(struct fe_priv *priv) {}
++#endif
++#endif
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -0,0 +1,1607 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/dma-mapping.h>
++#include <linux/init.h>
++#include <linux/skbuff.h>
++#include <linux/etherdevice.h>
++#include <linux/ethtool.h>
++#include <linux/platform_device.h>
++#include <linux/of_device.h>
++#include <linux/clk.h>
++#include <linux/of_net.h>
++#include <linux/of_mdio.h>
++#include <linux/if_vlan.h>
++#include <linux/reset.h>
++#include <linux/tcp.h>
++#include <linux/io.h>
++#include <linux/bug.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio.h"
++#include "ethtool.h"
++
++#define	MAX_RX_LENGTH		1536
++#define FE_RX_ETH_HLEN		(VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
++#define FE_RX_HLEN		(NET_SKB_PAD + FE_RX_ETH_HLEN + NET_IP_ALIGN)
++#define DMA_DUMMY_DESC		0xffffffff
++#define FE_DEFAULT_MSG_ENABLE \
++		(NETIF_MSG_DRV | \
++		NETIF_MSG_PROBE | \
++		NETIF_MSG_LINK | \
++		NETIF_MSG_TIMER | \
++		NETIF_MSG_IFDOWN | \
++		NETIF_MSG_IFUP | \
++		NETIF_MSG_RX_ERR | \
++		NETIF_MSG_TX_ERR)
++
++#define TX_DMA_DESP2_DEF	(TX_DMA_LS0 | TX_DMA_DONE)
++#define TX_DMA_DESP4_DEF	(TX_DMA_QN(3) | TX_DMA_PN(1))
++#define NEXT_TX_DESP_IDX(X)	(((X) + 1) & (ring->tx_ring_size - 1))
++#define NEXT_RX_DESP_IDX(X)	(((X) + 1) & (ring->rx_ring_size - 1))
++
++#define SYSC_REG_RSTCTRL	0x34
++
++static int fe_msg_level = -1;
++module_param_named(msg_level, fe_msg_level, int, 0);
++MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)");
++
++static const u16 fe_reg_table_default[FE_REG_COUNT] = {
++	[FE_REG_PDMA_GLO_CFG] = FE_PDMA_GLO_CFG,
++	[FE_REG_PDMA_RST_CFG] = FE_PDMA_RST_CFG,
++	[FE_REG_DLY_INT_CFG] = FE_DLY_INT_CFG,
++	[FE_REG_TX_BASE_PTR0] = FE_TX_BASE_PTR0,
++	[FE_REG_TX_MAX_CNT0] = FE_TX_MAX_CNT0,
++	[FE_REG_TX_CTX_IDX0] = FE_TX_CTX_IDX0,
++	[FE_REG_TX_DTX_IDX0] = FE_TX_DTX_IDX0,
++	[FE_REG_RX_BASE_PTR0] = FE_RX_BASE_PTR0,
++	[FE_REG_RX_MAX_CNT0] = FE_RX_MAX_CNT0,
++	[FE_REG_RX_CALC_IDX0] = FE_RX_CALC_IDX0,
++	[FE_REG_RX_DRX_IDX0] = FE_RX_DRX_IDX0,
++	[FE_REG_FE_INT_ENABLE] = FE_FE_INT_ENABLE,
++	[FE_REG_FE_INT_STATUS] = FE_FE_INT_STATUS,
++	[FE_REG_FE_DMA_VID_BASE] = FE_DMA_VID0,
++	[FE_REG_FE_COUNTER_BASE] = FE_GDMA1_TX_GBCNT,
++	[FE_REG_FE_RST_GL] = FE_FE_RST_GL,
++};
++
++static const u16 *fe_reg_table = fe_reg_table_default;
++
++struct fe_work_t {
++	int bitnr;
++	void (*action)(struct fe_priv *);
++};
++
++static void __iomem *fe_base;
++
++void fe_w32(u32 val, unsigned reg)
++{
++	__raw_writel(val, fe_base + reg);
++}
++
++u32 fe_r32(unsigned reg)
++{
++	return __raw_readl(fe_base + reg);
++}
++
++void fe_reg_w32(u32 val, enum fe_reg reg)
++{
++	fe_w32(val, fe_reg_table[reg]);
++}
++
++u32 fe_reg_r32(enum fe_reg reg)
++{
++	return fe_r32(fe_reg_table[reg]);
++}
++
++void fe_reset(u32 reset_bits)
++{
++	u32 t;
++
++	t = rt_sysc_r32(SYSC_REG_RSTCTRL);
++	t |= reset_bits;
++	rt_sysc_w32(t, SYSC_REG_RSTCTRL);
++	usleep_range(10, 20);
++
++	t &= ~reset_bits;
++	rt_sysc_w32(t, SYSC_REG_RSTCTRL);
++	usleep_range(10, 20);
++}
++
++static inline void fe_int_disable(u32 mask)
++{
++	fe_reg_w32(fe_reg_r32(FE_REG_FE_INT_ENABLE) & ~mask,
++		   FE_REG_FE_INT_ENABLE);
++	/* flush write */
++	fe_reg_r32(FE_REG_FE_INT_ENABLE);
++}
++
++static inline void fe_int_enable(u32 mask)
++{
++	fe_reg_w32(fe_reg_r32(FE_REG_FE_INT_ENABLE) | mask,
++		   FE_REG_FE_INT_ENABLE);
++	/* flush write */
++	fe_reg_r32(FE_REG_FE_INT_ENABLE);
++}
++
++static inline void fe_hw_set_macaddr(struct fe_priv *priv, unsigned char *mac)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++	fe_w32((mac[0] << 8) | mac[1], FE_GDMA1_MAC_ADRH);
++	fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
++	       FE_GDMA1_MAC_ADRL);
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++}
++
++static int fe_set_mac_address(struct net_device *dev, void *p)
++{
++	int ret = eth_mac_addr(dev, p);
++
++	if (!ret) {
++		struct fe_priv *priv = netdev_priv(dev);
++
++		if (priv->soc->set_mac)
++			priv->soc->set_mac(priv, dev->dev_addr);
++		else
++			fe_hw_set_macaddr(priv, p);
++	}
++
++	return ret;
++}
++
++static inline int fe_max_frag_size(int mtu)
++{
++	/* make sure buf_size will be at least MAX_RX_LENGTH */
++	if (mtu + FE_RX_ETH_HLEN < MAX_RX_LENGTH)
++		mtu = MAX_RX_LENGTH - FE_RX_ETH_HLEN;
++
++	return SKB_DATA_ALIGN(FE_RX_HLEN + mtu) +
++		SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
++}
++
++static inline int fe_max_buf_size(int frag_size)
++{
++	int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN -
++		       SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
++
++	BUG_ON(buf_size < MAX_RX_LENGTH);
++	return buf_size;
++}
++
++static inline void fe_get_rxd(struct fe_rx_dma *rxd, struct fe_rx_dma *dma_rxd)
++{
++	rxd->rxd1 = dma_rxd->rxd1;
++	rxd->rxd2 = dma_rxd->rxd2;
++	rxd->rxd3 = dma_rxd->rxd3;
++	rxd->rxd4 = dma_rxd->rxd4;
++}
++
++static inline void fe_set_txd(struct fe_tx_dma *txd, struct fe_tx_dma *dma_txd)
++{
++	dma_txd->txd1 = txd->txd1;
++	dma_txd->txd3 = txd->txd3;
++	dma_txd->txd4 = txd->txd4;
++	/* clean dma done flag last */
++	dma_txd->txd2 = txd->txd2;
++}
++
++static void fe_clean_rx(struct fe_priv *priv)
++{
++	int i;
++	struct fe_rx_ring *ring = &priv->rx_ring;
++
++	if (ring->rx_data) {
++		for (i = 0; i < ring->rx_ring_size; i++)
++			if (ring->rx_data[i]) {
++				if (ring->rx_dma && ring->rx_dma[i].rxd1)
++					dma_unmap_single(&priv->netdev->dev,
++							 ring->rx_dma[i].rxd1,
++							 ring->rx_buf_size,
++							 DMA_FROM_DEVICE);
++				put_page(virt_to_head_page(ring->rx_data[i]));
++			}
++
++		kfree(ring->rx_data);
++		ring->rx_data = NULL;
++	}
++
++	if (ring->rx_dma) {
++		dma_free_coherent(&priv->netdev->dev,
++				  ring->rx_ring_size * sizeof(*ring->rx_dma),
++				  ring->rx_dma,
++				  ring->rx_phys);
++		ring->rx_dma = NULL;
++	}
++}
++
++static int fe_alloc_rx(struct fe_priv *priv)
++{
++	struct net_device *netdev = priv->netdev;
++	struct fe_rx_ring *ring = &priv->rx_ring;
++	int i, pad;
++
++	ring->rx_data = kcalloc(ring->rx_ring_size, sizeof(*ring->rx_data),
++			GFP_KERNEL);
++	if (!ring->rx_data)
++		goto no_rx_mem;
++
++	for (i = 0; i < ring->rx_ring_size; i++) {
++		ring->rx_data[i] = netdev_alloc_frag(ring->frag_size);
++		if (!ring->rx_data[i])
++			goto no_rx_mem;
++	}
++
++	ring->rx_dma = dma_alloc_coherent(&netdev->dev,
++			ring->rx_ring_size * sizeof(*ring->rx_dma),
++			&ring->rx_phys,
++			GFP_ATOMIC | __GFP_ZERO);
++	if (!ring->rx_dma)
++		goto no_rx_mem;
++
++	if (priv->flags & FE_FLAG_RX_2B_OFFSET)
++		pad = 0;
++	else
++		pad = NET_IP_ALIGN;
++	for (i = 0; i < ring->rx_ring_size; i++) {
++		dma_addr_t dma_addr = dma_map_single(&netdev->dev,
++				ring->rx_data[i] + NET_SKB_PAD + pad,
++				ring->rx_buf_size,
++				DMA_FROM_DEVICE);
++		if (unlikely(dma_mapping_error(&netdev->dev, dma_addr)))
++			goto no_rx_mem;
++		ring->rx_dma[i].rxd1 = (unsigned int)dma_addr;
++
++		if (priv->flags & FE_FLAG_RX_SG_DMA)
++			ring->rx_dma[i].rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
++		else
++			ring->rx_dma[i].rxd2 = RX_DMA_LSO;
++	}
++	ring->rx_calc_idx = ring->rx_ring_size - 1;
++	/* make sure that all changes to the dma ring are flushed before we
++	 * continue
++	 */
++	wmb();
++
++	fe_reg_w32(ring->rx_phys, FE_REG_RX_BASE_PTR0);
++	fe_reg_w32(ring->rx_ring_size, FE_REG_RX_MAX_CNT0);
++	fe_reg_w32(ring->rx_calc_idx, FE_REG_RX_CALC_IDX0);
++	fe_reg_w32(FE_PST_DRX_IDX0, FE_REG_PDMA_RST_CFG);
++
++	return 0;
++
++no_rx_mem:
++	return -ENOMEM;
++}
++
++static void fe_txd_unmap(struct device *dev, struct fe_tx_buf *tx_buf)
++{
++	if (tx_buf->flags & FE_TX_FLAGS_SINGLE0) {
++		dma_unmap_single(dev,
++				 dma_unmap_addr(tx_buf, dma_addr0),
++				 dma_unmap_len(tx_buf, dma_len0),
++				 DMA_TO_DEVICE);
++	} else if (tx_buf->flags & FE_TX_FLAGS_PAGE0) {
++		dma_unmap_page(dev,
++			       dma_unmap_addr(tx_buf, dma_addr0),
++			       dma_unmap_len(tx_buf, dma_len0),
++			       DMA_TO_DEVICE);
++	}
++	if (tx_buf->flags & FE_TX_FLAGS_PAGE1)
++		dma_unmap_page(dev,
++			       dma_unmap_addr(tx_buf, dma_addr1),
++			       dma_unmap_len(tx_buf, dma_len1),
++			       DMA_TO_DEVICE);
++
++	tx_buf->flags = 0;
++	if (tx_buf->skb && (tx_buf->skb != (struct sk_buff *)DMA_DUMMY_DESC))
++		dev_kfree_skb_any(tx_buf->skb);
++	tx_buf->skb = NULL;
++}
++
++static void fe_clean_tx(struct fe_priv *priv)
++{
++	int i;
++	struct device *dev = &priv->netdev->dev;
++	struct fe_tx_ring *ring = &priv->tx_ring;
++
++	if (ring->tx_buf) {
++		for (i = 0; i < ring->tx_ring_size; i++)
++			fe_txd_unmap(dev, &ring->tx_buf[i]);
++		kfree(ring->tx_buf);
++		ring->tx_buf = NULL;
++	}
++
++	if (ring->tx_dma) {
++		dma_free_coherent(dev,
++				  ring->tx_ring_size * sizeof(*ring->tx_dma),
++				  ring->tx_dma,
++				  ring->tx_phys);
++		ring->tx_dma = NULL;
++	}
++
++	netdev_reset_queue(priv->netdev);
++}
++
++static int fe_alloc_tx(struct fe_priv *priv)
++{
++	int i;
++	struct fe_tx_ring *ring = &priv->tx_ring;
++
++	ring->tx_free_idx = 0;
++	ring->tx_next_idx = 0;
++	ring->tx_thresh = max((unsigned long)ring->tx_ring_size >> 2,
++			      MAX_SKB_FRAGS);
++
++	ring->tx_buf = kcalloc(ring->tx_ring_size, sizeof(*ring->tx_buf),
++			GFP_KERNEL);
++	if (!ring->tx_buf)
++		goto no_tx_mem;
++
++	ring->tx_dma = dma_alloc_coherent(&priv->netdev->dev,
++			ring->tx_ring_size * sizeof(*ring->tx_dma),
++			&ring->tx_phys,
++			GFP_ATOMIC | __GFP_ZERO);
++	if (!ring->tx_dma)
++		goto no_tx_mem;
++
++	for (i = 0; i < ring->tx_ring_size; i++) {
++		if (priv->soc->tx_dma)
++			priv->soc->tx_dma(&ring->tx_dma[i]);
++		ring->tx_dma[i].txd2 = TX_DMA_DESP2_DEF;
++	}
++	/* make sure that all changes to the dma ring are flushed before we
++	 * continue
++	 */
++	wmb();
++
++	fe_reg_w32(ring->tx_phys, FE_REG_TX_BASE_PTR0);
++	fe_reg_w32(ring->tx_ring_size, FE_REG_TX_MAX_CNT0);
++	fe_reg_w32(0, FE_REG_TX_CTX_IDX0);
++	fe_reg_w32(FE_PST_DTX_IDX0, FE_REG_PDMA_RST_CFG);
++
++	return 0;
++
++no_tx_mem:
++	return -ENOMEM;
++}
++
++static int fe_init_dma(struct fe_priv *priv)
++{
++	int err;
++
++	err = fe_alloc_tx(priv);
++	if (err)
++		return err;
++
++	err = fe_alloc_rx(priv);
++	if (err)
++		return err;
++
++	return 0;
++}
++
++static void fe_free_dma(struct fe_priv *priv)
++{
++	fe_clean_tx(priv);
++	fe_clean_rx(priv);
++}
++
++void fe_stats_update(struct fe_priv *priv)
++{
++	struct fe_hw_stats *hwstats = priv->hw_stats;
++	unsigned int base = fe_reg_table[FE_REG_FE_COUNTER_BASE];
++	u64 stats;
++
++	u64_stats_update_begin(&hwstats->syncp);
++
++	if (IS_ENABLED(CONFIG_SOC_MT7621)) {
++		hwstats->rx_bytes			+= fe_r32(base);
++		stats					=  fe_r32(base + 0x04);
++		if (stats)
++			hwstats->rx_bytes		+= (stats << 32);
++		hwstats->rx_packets			+= fe_r32(base + 0x08);
++		hwstats->rx_overflow			+= fe_r32(base + 0x10);
++		hwstats->rx_fcs_errors			+= fe_r32(base + 0x14);
++		hwstats->rx_short_errors		+= fe_r32(base + 0x18);
++		hwstats->rx_long_errors			+= fe_r32(base + 0x1c);
++		hwstats->rx_checksum_errors		+= fe_r32(base + 0x20);
++		hwstats->rx_flow_control_packets	+= fe_r32(base + 0x24);
++		hwstats->tx_skip			+= fe_r32(base + 0x28);
++		hwstats->tx_collisions			+= fe_r32(base + 0x2c);
++		hwstats->tx_bytes			+= fe_r32(base + 0x30);
++		stats					=  fe_r32(base + 0x34);
++		if (stats)
++			hwstats->tx_bytes		+= (stats << 32);
++		hwstats->tx_packets			+= fe_r32(base + 0x38);
++	} else {
++		hwstats->tx_bytes			+= fe_r32(base);
++		hwstats->tx_packets			+= fe_r32(base + 0x04);
++		hwstats->tx_skip			+= fe_r32(base + 0x08);
++		hwstats->tx_collisions			+= fe_r32(base + 0x0c);
++		hwstats->rx_bytes			+= fe_r32(base + 0x20);
++		hwstats->rx_packets			+= fe_r32(base + 0x24);
++		hwstats->rx_overflow			+= fe_r32(base + 0x28);
++		hwstats->rx_fcs_errors			+= fe_r32(base + 0x2c);
++		hwstats->rx_short_errors		+= fe_r32(base + 0x30);
++		hwstats->rx_long_errors			+= fe_r32(base + 0x34);
++		hwstats->rx_checksum_errors		+= fe_r32(base + 0x38);
++		hwstats->rx_flow_control_packets	+= fe_r32(base + 0x3c);
++	}
++
++	u64_stats_update_end(&hwstats->syncp);
++}
++
++static struct rtnl_link_stats64 *fe_get_stats64(struct net_device *dev,
++				struct rtnl_link_stats64 *storage)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct fe_hw_stats *hwstats = priv->hw_stats;
++	unsigned int base = fe_reg_table[FE_REG_FE_COUNTER_BASE];
++	unsigned int start;
++
++	if (!base) {
++		netdev_stats_to_stats64(storage, &dev->stats);
++		return storage;
++	}
++
++	if (netif_running(dev) && netif_device_present(dev)) {
++		if (spin_trylock(&hwstats->stats_lock)) {
++			fe_stats_update(priv);
++			spin_unlock(&hwstats->stats_lock);
++		}
++	}
++
++	do {
++		start = u64_stats_fetch_begin_irq(&hwstats->syncp);
++		storage->rx_packets = hwstats->rx_packets;
++		storage->tx_packets = hwstats->tx_packets;
++		storage->rx_bytes = hwstats->rx_bytes;
++		storage->tx_bytes = hwstats->tx_bytes;
++		storage->collisions = hwstats->tx_collisions;
++		storage->rx_length_errors = hwstats->rx_short_errors +
++			hwstats->rx_long_errors;
++		storage->rx_over_errors = hwstats->rx_overflow;
++		storage->rx_crc_errors = hwstats->rx_fcs_errors;
++		storage->rx_errors = hwstats->rx_checksum_errors;
++		storage->tx_aborted_errors = hwstats->tx_skip;
++	} while (u64_stats_fetch_retry_irq(&hwstats->syncp, start));
++
++	storage->tx_errors = priv->netdev->stats.tx_errors;
++	storage->rx_dropped = priv->netdev->stats.rx_dropped;
++	storage->tx_dropped = priv->netdev->stats.tx_dropped;
++
++	return storage;
++}
++
++static int fe_vlan_rx_add_vid(struct net_device *dev,
++			      __be16 proto, u16 vid)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	u32 idx = (vid & 0xf);
++	u32 vlan_cfg;
++
++	if (!((fe_reg_table[FE_REG_FE_DMA_VID_BASE]) &&
++	      (dev->features & NETIF_F_HW_VLAN_CTAG_TX)))
++		return 0;
++
++	if (test_bit(idx, &priv->vlan_map)) {
++		netdev_warn(dev, "disable tx vlan offload\n");
++		dev->wanted_features &= ~NETIF_F_HW_VLAN_CTAG_TX;
++		netdev_update_features(dev);
++	} else {
++		vlan_cfg = fe_r32(fe_reg_table[FE_REG_FE_DMA_VID_BASE] +
++				((idx >> 1) << 2));
++		if (idx & 0x1) {
++			vlan_cfg &= 0xffff;
++			vlan_cfg |= (vid << 16);
++		} else {
++			vlan_cfg &= 0xffff0000;
++			vlan_cfg |= vid;
++		}
++		fe_w32(vlan_cfg, fe_reg_table[FE_REG_FE_DMA_VID_BASE] +
++				((idx >> 1) << 2));
++		set_bit(idx, &priv->vlan_map);
++	}
++
++	return 0;
++}
++
++static int fe_vlan_rx_kill_vid(struct net_device *dev,
++			       __be16 proto, u16 vid)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	u32 idx = (vid & 0xf);
++
++	if (!((fe_reg_table[FE_REG_FE_DMA_VID_BASE]) &&
++	      (dev->features & NETIF_F_HW_VLAN_CTAG_TX)))
++		return 0;
++
++	clear_bit(idx, &priv->vlan_map);
++
++	return 0;
++}
++
++static inline u32 fe_empty_txd(struct fe_tx_ring *ring)
++{
++	barrier();
++	return (u32)(ring->tx_ring_size -
++			((ring->tx_next_idx - ring->tx_free_idx) &
++			 (ring->tx_ring_size - 1)));
++}
++
++static int fe_tx_map_dma(struct sk_buff *skb, struct net_device *dev,
++			 int tx_num, struct fe_tx_ring *ring)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct skb_frag_struct *frag;
++	struct fe_tx_dma txd, *ptxd;
++	struct fe_tx_buf *tx_buf;
++	dma_addr_t mapped_addr;
++	unsigned int nr_frags;
++	u32 def_txd4;
++	int i, j, k, frag_size, frag_map_size, offset;
++
++	tx_buf = &ring->tx_buf[ring->tx_next_idx];
++	memset(tx_buf, 0, sizeof(*tx_buf));
++	memset(&txd, 0, sizeof(txd));
++	nr_frags = skb_shinfo(skb)->nr_frags;
++
++	/* init tx descriptor */
++	if (priv->soc->tx_dma)
++		priv->soc->tx_dma(&txd);
++	else
++		txd.txd4 = TX_DMA_DESP4_DEF;
++	def_txd4 = txd.txd4;
++
++	/* TX Checksum offload */
++	if (skb->ip_summed == CHECKSUM_PARTIAL)
++		txd.txd4 |= TX_DMA_CHKSUM;
++
++	/* VLAN header offload */
++	if (skb_vlan_tag_present(skb)) {
++		u16 tag = skb_vlan_tag_get(skb);
++
++		if (IS_ENABLED(CONFIG_SOC_MT7621))
++			txd.txd4 |= TX_DMA_INS_VLAN_MT7621 | tag;
++		else
++			txd.txd4 |= TX_DMA_INS_VLAN |
++				((tag >> VLAN_PRIO_SHIFT) << 4) |
++				(tag & 0xF);
++	}
++
++	/* TSO: fill MSS info in tcp checksum field */
++	if (skb_is_gso(skb)) {
++		if (skb_cow_head(skb, 0)) {
++			netif_warn(priv, tx_err, dev,
++				   "GSO expand head fail.\n");
++			goto err_out;
++		}
++		if (skb_shinfo(skb)->gso_type &
++				(SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
++			txd.txd4 |= TX_DMA_TSO;
++			tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size);
++		}
++	}
++
++	mapped_addr = dma_map_single(&dev->dev, skb->data,
++				     skb_headlen(skb), DMA_TO_DEVICE);
++	if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
++		goto err_out;
++	txd.txd1 = mapped_addr;
++	txd.txd2 = TX_DMA_PLEN0(skb_headlen(skb));
++
++	tx_buf->flags |= FE_TX_FLAGS_SINGLE0;
++	dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr);
++	dma_unmap_len_set(tx_buf, dma_len0, skb_headlen(skb));
++
++	/* TX SG offload */
++	j = ring->tx_next_idx;
++	k = 0;
++	for (i = 0; i < nr_frags; i++) {
++		offset = 0;
++		frag = &skb_shinfo(skb)->frags[i];
++		frag_size = skb_frag_size(frag);
++
++		while (frag_size > 0) {
++			frag_map_size = min(frag_size, TX_DMA_BUF_LEN);
++			mapped_addr = skb_frag_dma_map(&dev->dev, frag, offset,
++						       frag_map_size,
++						       DMA_TO_DEVICE);
++			if (unlikely(dma_mapping_error(&dev->dev, mapped_addr)))
++				goto err_dma;
++
++			if (k & 0x1) {
++				j = NEXT_TX_DESP_IDX(j);
++				txd.txd1 = mapped_addr;
++				txd.txd2 = TX_DMA_PLEN0(frag_map_size);
++				txd.txd4 = def_txd4;
++
++				tx_buf = &ring->tx_buf[j];
++				memset(tx_buf, 0, sizeof(*tx_buf));
++
++				tx_buf->flags |= FE_TX_FLAGS_PAGE0;
++				dma_unmap_addr_set(tx_buf, dma_addr0,
++						   mapped_addr);
++				dma_unmap_len_set(tx_buf, dma_len0,
++						  frag_map_size);
++			} else {
++				txd.txd3 = mapped_addr;
++				txd.txd2 |= TX_DMA_PLEN1(frag_map_size);
++
++				tx_buf->skb = (struct sk_buff *)DMA_DUMMY_DESC;
++				tx_buf->flags |= FE_TX_FLAGS_PAGE1;
++				dma_unmap_addr_set(tx_buf, dma_addr1,
++						   mapped_addr);
++				dma_unmap_len_set(tx_buf, dma_len1,
++						  frag_map_size);
++
++				if (!((i == (nr_frags - 1)) &&
++				      (frag_map_size == frag_size))) {
++					fe_set_txd(&txd, &ring->tx_dma[j]);
++					memset(&txd, 0, sizeof(txd));
++				}
++			}
++			frag_size -= frag_map_size;
++			offset += frag_map_size;
++			k++;
++		}
++	}
++
++	/* set last segment */
++	if (k & 0x1)
++		txd.txd2 |= TX_DMA_LS1;
++	else
++		txd.txd2 |= TX_DMA_LS0;
++	fe_set_txd(&txd, &ring->tx_dma[j]);
++
++	/* store skb to cleanup */
++	tx_buf->skb = skb;
++
++	netdev_sent_queue(dev, skb->len);
++	skb_tx_timestamp(skb);
++
++	ring->tx_next_idx = NEXT_TX_DESP_IDX(j);
++	/* make sure that all changes to the dma ring are flushed before we
++	 * continue
++	 */
++	wmb();
++	if (unlikely(fe_empty_txd(ring) <= ring->tx_thresh)) {
++		netif_stop_queue(dev);
++		smp_mb();
++		if (unlikely(fe_empty_txd(ring) > ring->tx_thresh))
++			netif_wake_queue(dev);
++	}
++
++	if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !skb->xmit_more)
++		fe_reg_w32(ring->tx_next_idx, FE_REG_TX_CTX_IDX0);
++
++	return 0;
++
++err_dma:
++	j = ring->tx_next_idx;
++	for (i = 0; i < tx_num; i++) {
++		ptxd = &ring->tx_dma[j];
++		tx_buf = &ring->tx_buf[j];
++
++		/* unmap dma */
++		fe_txd_unmap(&dev->dev, tx_buf);
++
++		ptxd->txd2 = TX_DMA_DESP2_DEF;
++		j = NEXT_TX_DESP_IDX(j);
++	}
++	/* make sure that all changes to the dma ring are flushed before we
++	 * continue
++	 */
++	wmb();
++
++err_out:
++	return -1;
++}
++
++static inline int fe_skb_padto(struct sk_buff *skb, struct fe_priv *priv)
++{
++	unsigned int len;
++	int ret;
++
++	ret = 0;
++	if (unlikely(skb->len < VLAN_ETH_ZLEN)) {
++		if ((priv->flags & FE_FLAG_PADDING_64B) &&
++		    !(priv->flags & FE_FLAG_PADDING_BUG))
++			return ret;
++
++		if (skb_vlan_tag_present(skb))
++			len = ETH_ZLEN;
++		else if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
++			len = VLAN_ETH_ZLEN;
++		else if (!(priv->flags & FE_FLAG_PADDING_64B))
++			len = ETH_ZLEN;
++		else
++			return ret;
++
++		if (skb->len < len) {
++			ret = skb_pad(skb, len - skb->len);
++			if (ret < 0)
++				return ret;
++			skb->len = len;
++			skb_set_tail_pointer(skb, len);
++		}
++	}
++
++	return ret;
++}
++
++static inline int fe_cal_txd_req(struct sk_buff *skb)
++{
++	int i, nfrags;
++	struct skb_frag_struct *frag;
++
++	nfrags = 1;
++	if (skb_is_gso(skb)) {
++		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
++			frag = &skb_shinfo(skb)->frags[i];
++			nfrags += DIV_ROUND_UP(frag->size, TX_DMA_BUF_LEN);
++		}
++	} else {
++		nfrags += skb_shinfo(skb)->nr_frags;
++	}
++
++	return DIV_ROUND_UP(nfrags, 2);
++}
++
++static int fe_start_xmit(struct sk_buff *skb, struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct fe_tx_ring *ring = &priv->tx_ring;
++	struct net_device_stats *stats = &dev->stats;
++	int tx_num;
++	int len = skb->len;
++
++	if (fe_skb_padto(skb, priv)) {
++		netif_warn(priv, tx_err, dev, "tx padding failed!\n");
++		return NETDEV_TX_OK;
++	}
++
++	tx_num = fe_cal_txd_req(skb);
++	if (unlikely(fe_empty_txd(ring) <= tx_num)) {
++		netif_stop_queue(dev);
++		netif_err(priv, tx_queued, dev,
++			  "Tx Ring full when queue awake!\n");
++		return NETDEV_TX_BUSY;
++	}
++
++	if (fe_tx_map_dma(skb, dev, tx_num, ring) < 0) {
++		stats->tx_dropped++;
++	} else {
++		stats->tx_packets++;
++		stats->tx_bytes += len;
++	}
++
++	return NETDEV_TX_OK;
++}
++
++static inline void fe_rx_vlan(struct sk_buff *skb)
++{
++	struct ethhdr *ehdr;
++	u16 vlanid;
++
++	if (!__vlan_get_tag(skb, &vlanid)) {
++		/* pop the vlan tag */
++		ehdr = (struct ethhdr *)skb->data;
++		memmove(skb->data + VLAN_HLEN, ehdr, ETH_ALEN * 2);
++		skb_pull(skb, VLAN_HLEN);
++		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid);
++	}
++}
++
++static int fe_poll_rx(struct napi_struct *napi, int budget,
++		      struct fe_priv *priv, u32 rx_intr)
++{
++	struct net_device *netdev = priv->netdev;
++	struct net_device_stats *stats = &netdev->stats;
++	struct fe_soc_data *soc = priv->soc;
++	struct fe_rx_ring *ring = &priv->rx_ring;
++	int idx = ring->rx_calc_idx;
++	u32 checksum_bit;
++	struct sk_buff *skb;
++	u8 *data, *new_data;
++	struct fe_rx_dma *rxd, trxd;
++	int done = 0, pad;
++	bool rx_vlan = netdev->features & NETIF_F_HW_VLAN_CTAG_RX;
++
++	if (netdev->features & NETIF_F_RXCSUM)
++		checksum_bit = soc->checksum_bit;
++	else
++		checksum_bit = 0;
++
++	if (priv->flags & FE_FLAG_RX_2B_OFFSET)
++		pad = 0;
++	else
++		pad = NET_IP_ALIGN;
++
++	while (done < budget) {
++		unsigned int pktlen;
++		dma_addr_t dma_addr;
++
++		idx = NEXT_RX_DESP_IDX(idx);
++		rxd = &ring->rx_dma[idx];
++		data = ring->rx_data[idx];
++
++		fe_get_rxd(&trxd, rxd);
++		if (!(trxd.rxd2 & RX_DMA_DONE))
++			break;
++
++		/* alloc new buffer */
++		new_data = netdev_alloc_frag(ring->frag_size);
++		if (unlikely(!new_data)) {
++			stats->rx_dropped++;
++			goto release_desc;
++		}
++		dma_addr = dma_map_single(&netdev->dev,
++					  new_data + NET_SKB_PAD + pad,
++					  ring->rx_buf_size,
++					  DMA_FROM_DEVICE);
++		if (unlikely(dma_mapping_error(&netdev->dev, dma_addr))) {
++			put_page(virt_to_head_page(new_data));
++			goto release_desc;
++		}
++
++		/* receive data */
++		skb = build_skb(data, ring->frag_size);
++		if (unlikely(!skb)) {
++			put_page(virt_to_head_page(new_data));
++			goto release_desc;
++		}
++		skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN);
++
++		dma_unmap_single(&netdev->dev, trxd.rxd1,
++				 ring->rx_buf_size, DMA_FROM_DEVICE);
++		pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
++		skb->dev = netdev;
++		skb_put(skb, pktlen);
++		if (trxd.rxd4 & checksum_bit)
++			skb->ip_summed = CHECKSUM_UNNECESSARY;
++		else
++			skb_checksum_none_assert(skb);
++		if (rx_vlan)
++			fe_rx_vlan(skb);
++		skb->protocol = eth_type_trans(skb, netdev);
++
++		stats->rx_packets++;
++		stats->rx_bytes += pktlen;
++
++		napi_gro_receive(napi, skb);
++
++		ring->rx_data[idx] = new_data;
++		rxd->rxd1 = (unsigned int)dma_addr;
++
++release_desc:
++		if (priv->flags & FE_FLAG_RX_SG_DMA)
++			rxd->rxd2 = RX_DMA_PLEN0(ring->rx_buf_size);
++		else
++			rxd->rxd2 = RX_DMA_LSO;
++
++		ring->rx_calc_idx = idx;
++		/* make sure that all changes to the dma ring are flushed before
++		 * we continue
++		 */
++		wmb();
++		fe_reg_w32(ring->rx_calc_idx, FE_REG_RX_CALC_IDX0);
++		done++;
++	}
++
++	if (done < budget)
++		fe_reg_w32(rx_intr, FE_REG_FE_INT_STATUS);
++
++	return done;
++}
++
++static int fe_poll_tx(struct fe_priv *priv, int budget, u32 tx_intr,
++		      int *tx_again)
++{
++	struct net_device *netdev = priv->netdev;
++	struct device *dev = &netdev->dev;
++	unsigned int bytes_compl = 0;
++	struct sk_buff *skb;
++	struct fe_tx_buf *tx_buf;
++	int done = 0;
++	u32 idx, hwidx;
++	struct fe_tx_ring *ring = &priv->tx_ring;
++
++	idx = ring->tx_free_idx;
++	hwidx = fe_reg_r32(FE_REG_TX_DTX_IDX0);
++
++	while ((idx != hwidx) && budget) {
++		tx_buf = &ring->tx_buf[idx];
++		skb = tx_buf->skb;
++
++		if (!skb)
++			break;
++
++		if (skb != (struct sk_buff *)DMA_DUMMY_DESC) {
++			bytes_compl += skb->len;
++			done++;
++			budget--;
++		}
++		fe_txd_unmap(dev, tx_buf);
++		idx = NEXT_TX_DESP_IDX(idx);
++	}
++	ring->tx_free_idx = idx;
++
++	if (idx == hwidx) {
++		/* read hw index again make sure no new tx packet */
++		hwidx = fe_reg_r32(FE_REG_TX_DTX_IDX0);
++		if (idx == hwidx)
++			fe_reg_w32(tx_intr, FE_REG_FE_INT_STATUS);
++		else
++			*tx_again = 1;
++	} else {
++		*tx_again = 1;
++	}
++
++	if (done) {
++		netdev_completed_queue(netdev, done, bytes_compl);
++		smp_mb();
++		if (unlikely(netif_queue_stopped(netdev) &&
++			     (fe_empty_txd(ring) > ring->tx_thresh)))
++			netif_wake_queue(netdev);
++	}
++
++	return done;
++}
++
++static int fe_poll(struct napi_struct *napi, int budget)
++{
++	struct fe_priv *priv = container_of(napi, struct fe_priv, rx_napi);
++	struct fe_hw_stats *hwstat = priv->hw_stats;
++	int tx_done, rx_done, tx_again;
++	u32 status, fe_status, status_reg, mask;
++	u32 tx_intr, rx_intr, status_intr;
++
++	status = fe_reg_r32(FE_REG_FE_INT_STATUS);
++	fe_status = status;
++	tx_intr = priv->soc->tx_int;
++	rx_intr = priv->soc->rx_int;
++	status_intr = priv->soc->status_int;
++	tx_done = 0;
++	rx_done = 0;
++	tx_again = 0;
++
++	if (fe_reg_table[FE_REG_FE_INT_STATUS2]) {
++		fe_status = fe_reg_r32(FE_REG_FE_INT_STATUS2);
++		status_reg = FE_REG_FE_INT_STATUS2;
++	} else {
++		status_reg = FE_REG_FE_INT_STATUS;
++	}
++
++	if (status & tx_intr)
++		tx_done = fe_poll_tx(priv, budget, tx_intr, &tx_again);
++
++	if (status & rx_intr)
++		rx_done = fe_poll_rx(napi, budget, priv, rx_intr);
++
++	if (unlikely(fe_status & status_intr)) {
++		if (hwstat && spin_trylock(&hwstat->stats_lock)) {
++			fe_stats_update(priv);
++			spin_unlock(&hwstat->stats_lock);
++		}
++		fe_reg_w32(status_intr, status_reg);
++	}
++
++	if (unlikely(netif_msg_intr(priv))) {
++		mask = fe_reg_r32(FE_REG_FE_INT_ENABLE);
++		netdev_info(priv->netdev,
++			    "done tx %d, rx %d, intr 0x%08x/0x%x\n",
++			    tx_done, rx_done, status, mask);
++	}
++
++	if (!tx_again && (rx_done < budget)) {
++		status = fe_reg_r32(FE_REG_FE_INT_STATUS);
++		if (status & (tx_intr | rx_intr)) {
++			/* let napi poll again */
++			rx_done = budget;
++			goto poll_again;
++		}
++
++		napi_complete(napi);
++		fe_int_enable(tx_intr | rx_intr);
++	} else {
++		rx_done = budget;
++	}
++
++poll_again:
++	return rx_done;
++}
++
++static void fe_tx_timeout(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct fe_tx_ring *ring = &priv->tx_ring;
++
++	priv->netdev->stats.tx_errors++;
++	netif_err(priv, tx_err, dev,
++		  "transmit timed out\n");
++	netif_info(priv, drv, dev, "dma_cfg:%08x\n",
++		   fe_reg_r32(FE_REG_PDMA_GLO_CFG));
++	netif_info(priv, drv, dev, "tx_ring=%d, "
++		   "base=%08x, max=%u, ctx=%u, dtx=%u, fdx=%hu, next=%hu\n",
++		   0, fe_reg_r32(FE_REG_TX_BASE_PTR0),
++		   fe_reg_r32(FE_REG_TX_MAX_CNT0),
++		   fe_reg_r32(FE_REG_TX_CTX_IDX0),
++		   fe_reg_r32(FE_REG_TX_DTX_IDX0),
++		   ring->tx_free_idx,
++		   ring->tx_next_idx);
++	netif_info(priv, drv, dev,
++		   "rx_ring=%d, base=%08x, max=%u, calc=%u, drx=%u\n",
++		   0, fe_reg_r32(FE_REG_RX_BASE_PTR0),
++		   fe_reg_r32(FE_REG_RX_MAX_CNT0),
++		   fe_reg_r32(FE_REG_RX_CALC_IDX0),
++		   fe_reg_r32(FE_REG_RX_DRX_IDX0));
++
++	if (!test_and_set_bit(FE_FLAG_RESET_PENDING, priv->pending_flags))
++		schedule_work(&priv->pending_work);
++}
++
++static irqreturn_t fe_handle_irq(int irq, void *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	u32 status, int_mask;
++
++	status = fe_reg_r32(FE_REG_FE_INT_STATUS);
++
++	if (unlikely(!status))
++		return IRQ_NONE;
++
++	int_mask = (priv->soc->rx_int | priv->soc->tx_int);
++	if (likely(status & int_mask)) {
++		if (likely(napi_schedule_prep(&priv->rx_napi))) {
++			fe_int_disable(int_mask);
++			__napi_schedule(&priv->rx_napi);
++		}
++	} else {
++		fe_reg_w32(status, FE_REG_FE_INT_STATUS);
++	}
++
++	return IRQ_HANDLED;
++}
++
++#ifdef CONFIG_NET_POLL_CONTROLLER
++static void fe_poll_controller(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	u32 int_mask = priv->soc->tx_int | priv->soc->rx_int;
++
++	fe_int_disable(int_mask);
++	fe_handle_irq(dev->irq, dev);
++	fe_int_enable(int_mask);
++}
++#endif
++
++int fe_set_clock_cycle(struct fe_priv *priv)
++{
++	unsigned long sysclk = priv->sysclk;
++
++	sysclk /= FE_US_CYC_CNT_DIVISOR;
++	sysclk <<= FE_US_CYC_CNT_SHIFT;
++
++	fe_w32((fe_r32(FE_FE_GLO_CFG) &
++			~(FE_US_CYC_CNT_MASK << FE_US_CYC_CNT_SHIFT)) |
++			sysclk,
++			FE_FE_GLO_CFG);
++	return 0;
++}
++
++void fe_fwd_config(struct fe_priv *priv)
++{
++	u32 fwd_cfg;
++
++	fwd_cfg = fe_r32(FE_GDMA1_FWD_CFG);
++
++	/* disable jumbo frame */
++	if (priv->flags & FE_FLAG_JUMBO_FRAME)
++		fwd_cfg &= ~FE_GDM1_JMB_EN;
++
++	/* set unicast/multicast/broadcast frame to cpu */
++	fwd_cfg &= ~0xffff;
++
++	fe_w32(fwd_cfg, FE_GDMA1_FWD_CFG);
++}
++
++static void fe_rxcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(FE_GDMA1_FWD_CFG) | (FE_GDM1_ICS_EN |
++					FE_GDM1_TCS_EN | FE_GDM1_UCS_EN),
++				FE_GDMA1_FWD_CFG);
++	else
++		fe_w32(fe_r32(FE_GDMA1_FWD_CFG) & ~(FE_GDM1_ICS_EN |
++					FE_GDM1_TCS_EN | FE_GDM1_UCS_EN),
++				FE_GDMA1_FWD_CFG);
++}
++
++static void fe_txcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(FE_CDMA_CSG_CFG) | (FE_ICS_GEN_EN |
++					FE_TCS_GEN_EN | FE_UCS_GEN_EN),
++				FE_CDMA_CSG_CFG);
++	else
++		fe_w32(fe_r32(FE_CDMA_CSG_CFG) & ~(FE_ICS_GEN_EN |
++					FE_TCS_GEN_EN | FE_UCS_GEN_EN),
++				FE_CDMA_CSG_CFG);
++}
++
++void fe_csum_config(struct fe_priv *priv)
++{
++	struct net_device *dev = priv_netdev(priv);
++
++	fe_txcsum_config((dev->features & NETIF_F_IP_CSUM));
++	fe_rxcsum_config((dev->features & NETIF_F_RXCSUM));
++}
++
++static int fe_hw_init(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	int i, err;
++
++	err = devm_request_irq(priv->device, dev->irq, fe_handle_irq, 0,
++			       dev_name(priv->device), dev);
++	if (err)
++		return err;
++
++	if (priv->soc->set_mac)
++		priv->soc->set_mac(priv, dev->dev_addr);
++	else
++		fe_hw_set_macaddr(priv, dev->dev_addr);
++
++	/* disable delay interrupt */
++	fe_reg_w32(0, FE_REG_DLY_INT_CFG);
++
++	fe_int_disable(priv->soc->tx_int | priv->soc->rx_int);
++
++	/* frame engine will push VLAN tag regarding to VIDX feild in Tx desc */
++	if (fe_reg_table[FE_REG_FE_DMA_VID_BASE])
++		for (i = 0; i < 16; i += 2)
++			fe_w32(((i + 1) << 16) + i,
++			       fe_reg_table[FE_REG_FE_DMA_VID_BASE] +
++			       (i * 2));
++
++	if (priv->soc->fwd_config(priv))
++		netdev_err(dev, "unable to get clock\n");
++
++	if (fe_reg_table[FE_REG_FE_RST_GL]) {
++		fe_reg_w32(1, FE_REG_FE_RST_GL);
++		fe_reg_w32(0, FE_REG_FE_RST_GL);
++	}
++
++	return 0;
++}
++
++static int fe_open(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	unsigned long flags;
++	u32 val;
++	int err;
++
++	err = fe_init_dma(priv);
++	if (err) {
++		fe_free_dma(priv);
++		return err;
++	}
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++
++	val = FE_TX_WB_DDONE | FE_RX_DMA_EN | FE_TX_DMA_EN;
++	if (priv->flags & FE_FLAG_RX_2B_OFFSET)
++		val |= FE_RX_2B_OFFSET;
++	val |= priv->soc->pdma_glo_cfg;
++	fe_reg_w32(val, FE_REG_PDMA_GLO_CFG);
++
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++
++	if (priv->phy)
++		priv->phy->start(priv);
++
++	if (priv->soc->has_carrier && priv->soc->has_carrier(priv))
++		netif_carrier_on(dev);
++
++	napi_enable(&priv->rx_napi);
++	fe_int_enable(priv->soc->tx_int | priv->soc->rx_int);
++	netif_start_queue(dev);
++
++	return 0;
++}
++
++static int fe_stop(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	unsigned long flags;
++	int i;
++
++	netif_tx_disable(dev);
++	fe_int_disable(priv->soc->tx_int | priv->soc->rx_int);
++	napi_disable(&priv->rx_napi);
++
++	if (priv->phy)
++		priv->phy->stop(priv);
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++
++	fe_reg_w32(fe_reg_r32(FE_REG_PDMA_GLO_CFG) &
++		     ~(FE_TX_WB_DDONE | FE_RX_DMA_EN | FE_TX_DMA_EN),
++		     FE_REG_PDMA_GLO_CFG);
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++
++	/* wait dma stop */
++	for (i = 0; i < 10; i++) {
++		if (fe_reg_r32(FE_REG_PDMA_GLO_CFG) &
++				(FE_TX_DMA_BUSY | FE_RX_DMA_BUSY)) {
++			msleep(20);
++			continue;
++		}
++		break;
++	}
++
++	fe_free_dma(priv);
++
++	return 0;
++}
++
++static int __init fe_init(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	struct device_node *port;
++	const char *mac_addr;
++	int err;
++
++	priv->soc->reset_fe();
++
++	if (priv->soc->switch_init)
++		if (priv->soc->switch_init(priv)) {
++			netdev_err(dev, "failed to initialize switch core\n");
++			return -ENODEV;
++		}
++
++	mac_addr = of_get_mac_address(priv->device->of_node);
++	if (mac_addr)
++		ether_addr_copy(dev->dev_addr, mac_addr);
++
++	/* If the mac address is invalid, use random mac address  */
++	if (!is_valid_ether_addr(dev->dev_addr)) {
++		random_ether_addr(dev->dev_addr);
++		dev_err(priv->device, "generated random MAC address %pM\n",
++			dev->dev_addr);
++	}
++
++	err = fe_mdio_init(priv);
++	if (err)
++		return err;
++
++	if (priv->soc->port_init)
++		for_each_child_of_node(priv->device->of_node, port)
++			if (of_device_is_compatible(port, "mediatek,eth-port") &&
++			    of_device_is_available(port))
++				priv->soc->port_init(priv, port);
++
++	if (priv->phy) {
++		err = priv->phy->connect(priv);
++		if (err)
++			goto err_phy_disconnect;
++	}
++
++	err = fe_hw_init(dev);
++	if (!err)
++		return 0;
++
++err_phy_disconnect:
++	if (priv->phy)
++		priv->phy->disconnect(priv);
++	fe_mdio_cleanup(priv);
++
++	return err;
++}
++
++static void fe_uninit(struct net_device *dev)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	if (priv->phy)
++		priv->phy->disconnect(priv);
++	fe_mdio_cleanup(priv);
++
++	fe_reg_w32(0, FE_REG_FE_INT_ENABLE);
++	free_irq(dev->irq, dev);
++}
++
++static int fe_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++
++	if (!priv->phy_dev)
++		return -ENODEV;
++
++	switch (cmd) {
++	case SIOCGMIIPHY:
++	case SIOCGMIIREG:
++	case SIOCSMIIREG:
++		return phy_mii_ioctl(priv->phy_dev, ifr, cmd);
++	default:
++		break;
++	}
++
++	return -EOPNOTSUPP;
++}
++
++static int fe_change_mtu(struct net_device *dev, int new_mtu)
++{
++	struct fe_priv *priv = netdev_priv(dev);
++	int frag_size, old_mtu;
++	u32 fwd_cfg;
++
++	if (!(priv->flags & FE_FLAG_JUMBO_FRAME))
++		return eth_change_mtu(dev, new_mtu);
++
++	frag_size = fe_max_frag_size(new_mtu);
++	if (new_mtu < 68 || frag_size > PAGE_SIZE)
++		return -EINVAL;
++
++	old_mtu = dev->mtu;
++	dev->mtu = new_mtu;
++
++	/* return early if the buffer sizes will not change */
++	if (old_mtu <= ETH_DATA_LEN && new_mtu <= ETH_DATA_LEN)
++		return 0;
++	if (old_mtu > ETH_DATA_LEN && new_mtu > ETH_DATA_LEN)
++		return 0;
++
++	if (new_mtu <= ETH_DATA_LEN)
++		priv->rx_ring.frag_size = fe_max_frag_size(ETH_DATA_LEN);
++	else
++		priv->rx_ring.frag_size = PAGE_SIZE;
++	priv->rx_ring.rx_buf_size = fe_max_buf_size(priv->rx_ring.frag_size);
++
++	if (!netif_running(dev))
++		return 0;
++
++	fe_stop(dev);
++	fwd_cfg = fe_r32(FE_GDMA1_FWD_CFG);
++	if (new_mtu <= ETH_DATA_LEN) {
++		fwd_cfg &= ~FE_GDM1_JMB_EN;
++	} else {
++		fwd_cfg &= ~(FE_GDM1_JMB_LEN_MASK << FE_GDM1_JMB_LEN_SHIFT);
++		fwd_cfg |= (DIV_ROUND_UP(frag_size, 1024) <<
++				FE_GDM1_JMB_LEN_SHIFT) | FE_GDM1_JMB_EN;
++	}
++	fe_w32(fwd_cfg, FE_GDMA1_FWD_CFG);
++
++	return fe_open(dev);
++}
++
++static const struct net_device_ops fe_netdev_ops = {
++	.ndo_init		= fe_init,
++	.ndo_uninit		= fe_uninit,
++	.ndo_open		= fe_open,
++	.ndo_stop		= fe_stop,
++	.ndo_start_xmit		= fe_start_xmit,
++	.ndo_set_mac_address	= fe_set_mac_address,
++	.ndo_validate_addr	= eth_validate_addr,
++	.ndo_do_ioctl		= fe_do_ioctl,
++	.ndo_change_mtu		= fe_change_mtu,
++	.ndo_tx_timeout		= fe_tx_timeout,
++	.ndo_get_stats64        = fe_get_stats64,
++	.ndo_vlan_rx_add_vid	= fe_vlan_rx_add_vid,
++	.ndo_vlan_rx_kill_vid	= fe_vlan_rx_kill_vid,
++#ifdef CONFIG_NET_POLL_CONTROLLER
++	.ndo_poll_controller	= fe_poll_controller,
++#endif
++};
++
++static void fe_reset_pending(struct fe_priv *priv)
++{
++	struct net_device *dev = priv->netdev;
++	int err;
++
++	rtnl_lock();
++	fe_stop(dev);
++
++	err = fe_open(dev);
++	if (err) {
++		netif_alert(priv, ifup, dev,
++			    "Driver up/down cycle failed, closing device.\n");
++		dev_close(dev);
++	}
++	rtnl_unlock();
++}
++
++static const struct fe_work_t fe_work[] = {
++	{FE_FLAG_RESET_PENDING, fe_reset_pending},
++};
++
++static void fe_pending_work(struct work_struct *work)
++{
++	struct fe_priv *priv = container_of(work, struct fe_priv, pending_work);
++	int i;
++	bool pending;
++
++	for (i = 0; i < ARRAY_SIZE(fe_work); i++) {
++		pending = test_and_clear_bit(fe_work[i].bitnr,
++					     priv->pending_flags);
++		if (pending)
++			fe_work[i].action(priv);
++	}
++}
++
++static int fe_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	const struct of_device_id *match;
++	struct fe_soc_data *soc;
++	struct net_device *netdev;
++	struct fe_priv *priv;
++	struct clk *sysclk;
++	int err, napi_weight;
++
++	device_reset(&pdev->dev);
++
++	match = of_match_device(of_fe_match, &pdev->dev);
++	soc = (struct fe_soc_data *)match->data;
++
++	if (soc->reg_table)
++		fe_reg_table = soc->reg_table;
++	else
++		soc->reg_table = fe_reg_table;
++
++	fe_base = devm_ioremap_resource(&pdev->dev, res);
++	if (!fe_base) {
++		err = -EADDRNOTAVAIL;
++		goto err_out;
++	}
++
++	netdev = alloc_etherdev(sizeof(*priv));
++	if (!netdev) {
++		dev_err(&pdev->dev, "alloc_etherdev failed\n");
++		err = -ENOMEM;
++		goto err_iounmap;
++	}
++
++	SET_NETDEV_DEV(netdev, &pdev->dev);
++	netdev->netdev_ops = &fe_netdev_ops;
++	netdev->base_addr = (unsigned long)fe_base;
++
++	netdev->irq = platform_get_irq(pdev, 0);
++	if (netdev->irq < 0) {
++		dev_err(&pdev->dev, "no IRQ resource found\n");
++		err = -ENXIO;
++		goto err_free_dev;
++	}
++
++	if (soc->init_data)
++		soc->init_data(soc, netdev);
++	/* fake NETIF_F_HW_VLAN_CTAG_RX for good GRO performance */
++	netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
++	netdev->vlan_features = netdev->hw_features &
++		~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
++	netdev->features |= netdev->hw_features;
++
++	/* fake rx vlan filter func. to support tx vlan offload func */
++	if (fe_reg_table[FE_REG_FE_DMA_VID_BASE])
++		netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
++
++	priv = netdev_priv(netdev);
++	spin_lock_init(&priv->page_lock);
++	if (fe_reg_table[FE_REG_FE_COUNTER_BASE]) {
++		priv->hw_stats = kzalloc(sizeof(*priv->hw_stats), GFP_KERNEL);
++		if (!priv->hw_stats) {
++			err = -ENOMEM;
++			goto err_free_dev;
++		}
++		spin_lock_init(&priv->hw_stats->stats_lock);
++	}
++
++	sysclk = devm_clk_get(&pdev->dev, NULL);
++	if (!IS_ERR(sysclk)) {
++		priv->sysclk = clk_get_rate(sysclk);
++	} else if ((priv->flags & FE_FLAG_CALIBRATE_CLK)) {
++		dev_err(&pdev->dev, "this soc needs a clk for calibration\n");
++		err = -ENXIO;
++		goto err_free_dev;
++	}
++
++	priv->switch_np = of_parse_phandle(pdev->dev.of_node, "mediatek,switch", 0);
++	if ((priv->flags & FE_FLAG_HAS_SWITCH) && !priv->switch_np) {
++		dev_err(&pdev->dev, "failed to read switch phandle\n");
++		err = -ENODEV;
++		goto err_free_dev;
++	}
++
++	priv->netdev = netdev;
++	priv->device = &pdev->dev;
++	priv->soc = soc;
++	priv->msg_enable = netif_msg_init(fe_msg_level, FE_DEFAULT_MSG_ENABLE);
++	priv->rx_ring.frag_size = fe_max_frag_size(ETH_DATA_LEN);
++	priv->rx_ring.rx_buf_size = fe_max_buf_size(priv->rx_ring.frag_size);
++	priv->tx_ring.tx_ring_size = NUM_DMA_DESC;
++	priv->rx_ring.rx_ring_size = NUM_DMA_DESC;
++	INIT_WORK(&priv->pending_work, fe_pending_work);
++
++	napi_weight = 32;
++	if (priv->flags & FE_FLAG_NAPI_WEIGHT) {
++		napi_weight *= 4;
++		priv->tx_ring.tx_ring_size *= 4;
++		priv->rx_ring.rx_ring_size *= 4;
++	}
++	netif_napi_add(netdev, &priv->rx_napi, fe_poll, napi_weight);
++	fe_set_ethtool_ops(netdev);
++
++	err = register_netdev(netdev);
++	if (err) {
++		dev_err(&pdev->dev, "error bringing up device\n");
++		goto err_free_dev;
++	}
++
++	platform_set_drvdata(pdev, netdev);
++
++	netif_info(priv, probe, netdev, "mediatek frame engine at 0x%08lx, irq %d\n",
++		   netdev->base_addr, netdev->irq);
++
++	return 0;
++
++err_free_dev:
++	free_netdev(netdev);
++err_iounmap:
++	devm_iounmap(&pdev->dev, fe_base);
++err_out:
++	return err;
++}
++
++static int fe_remove(struct platform_device *pdev)
++{
++	struct net_device *dev = platform_get_drvdata(pdev);
++	struct fe_priv *priv = netdev_priv(dev);
++
++	netif_napi_del(&priv->rx_napi);
++	kfree(priv->hw_stats);
++
++	cancel_work_sync(&priv->pending_work);
++
++	unregister_netdev(dev);
++	free_netdev(dev);
++	platform_set_drvdata(pdev, NULL);
++
++	return 0;
++}
++
++static struct platform_driver fe_driver = {
++	.probe = fe_probe,
++	.remove = fe_remove,
++	.driver = {
++		.name = "mtk_soc_eth",
++		.owner = THIS_MODULE,
++		.of_match_table = of_fe_match,
++	},
++};
++
++module_platform_driver(fe_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_DESCRIPTION("Ethernet driver for Ralink SoC");
++MODULE_VERSION(MTK_FE_DRV_VERSION);
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+@@ -0,0 +1,522 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef FE_ETH_H
++#define FE_ETH_H
++
++#include <linux/mii.h>
++#include <linux/interrupt.h>
++#include <linux/netdevice.h>
++#include <linux/dma-mapping.h>
++#include <linux/phy.h>
++#include <linux/ethtool.h>
++#include <linux/version.h>
++
++enum fe_reg {
++	FE_REG_PDMA_GLO_CFG = 0,
++	FE_REG_PDMA_RST_CFG,
++	FE_REG_DLY_INT_CFG,
++	FE_REG_TX_BASE_PTR0,
++	FE_REG_TX_MAX_CNT0,
++	FE_REG_TX_CTX_IDX0,
++	FE_REG_TX_DTX_IDX0,
++	FE_REG_RX_BASE_PTR0,
++	FE_REG_RX_MAX_CNT0,
++	FE_REG_RX_CALC_IDX0,
++	FE_REG_RX_DRX_IDX0,
++	FE_REG_FE_INT_ENABLE,
++	FE_REG_FE_INT_STATUS,
++	FE_REG_FE_DMA_VID_BASE,
++	FE_REG_FE_COUNTER_BASE,
++	FE_REG_FE_RST_GL,
++	FE_REG_FE_INT_STATUS2,
++	FE_REG_COUNT
++};
++
++enum fe_work_flag {
++	FE_FLAG_RESET_PENDING,
++	FE_FLAG_MAX
++};
++
++#define MTK_FE_DRV_VERSION		"0.1.2"
++
++/* power of 2 to let NEXT_TX_DESP_IDX work */
++#define NUM_DMA_DESC		BIT(7)
++#define MAX_DMA_DESC		0xfff
++
++#define FE_DELAY_EN_INT		0x80
++#define FE_DELAY_MAX_INT	0x04
++#define FE_DELAY_MAX_TOUT	0x04
++#define FE_DELAY_TIME		20
++#define FE_DELAY_CHAN		(((FE_DELAY_EN_INT | FE_DELAY_MAX_INT) << 8) | \
++				 FE_DELAY_MAX_TOUT)
++#define FE_DELAY_INIT		((FE_DELAY_CHAN << 16) | FE_DELAY_CHAN)
++#define FE_PSE_FQFC_CFG_INIT	0x80504000
++#define FE_PSE_FQFC_CFG_256Q	0xff908000
++
++/* interrupt bits */
++#define FE_CNT_PPE_AF		BIT(31)
++#define FE_CNT_GDM_AF		BIT(29)
++#define FE_PSE_P2_FC		BIT(26)
++#define FE_PSE_BUF_DROP		BIT(24)
++#define FE_GDM_OTHER_DROP	BIT(23)
++#define FE_PSE_P1_FC		BIT(22)
++#define FE_PSE_P0_FC		BIT(21)
++#define FE_PSE_FQ_EMPTY		BIT(20)
++#define FE_GE1_STA_CHG		BIT(18)
++#define FE_TX_COHERENT		BIT(17)
++#define FE_RX_COHERENT		BIT(16)
++#define FE_TX_DONE_INT3		BIT(11)
++#define FE_TX_DONE_INT2		BIT(10)
++#define FE_TX_DONE_INT1		BIT(9)
++#define FE_TX_DONE_INT0		BIT(8)
++#define FE_RX_DONE_INT0		BIT(2)
++#define FE_TX_DLY_INT		BIT(1)
++#define FE_RX_DLY_INT		BIT(0)
++
++#define FE_RX_DONE_INT		FE_RX_DONE_INT0
++#define FE_TX_DONE_INT		(FE_TX_DONE_INT0 | FE_TX_DONE_INT1 | \
++				 FE_TX_DONE_INT2 | FE_TX_DONE_INT3)
++
++#define RT5350_RX_DLY_INT	BIT(30)
++#define RT5350_TX_DLY_INT	BIT(28)
++#define RT5350_RX_DONE_INT1	BIT(17)
++#define RT5350_RX_DONE_INT0	BIT(16)
++#define RT5350_TX_DONE_INT3	BIT(3)
++#define RT5350_TX_DONE_INT2	BIT(2)
++#define RT5350_TX_DONE_INT1	BIT(1)
++#define RT5350_TX_DONE_INT0	BIT(0)
++
++#define RT5350_RX_DONE_INT	(RT5350_RX_DONE_INT0 | RT5350_RX_DONE_INT1)
++#define RT5350_TX_DONE_INT	(RT5350_TX_DONE_INT0 | RT5350_TX_DONE_INT1 | \
++				 RT5350_TX_DONE_INT2 | RT5350_TX_DONE_INT3)
++
++/* registers */
++#define FE_FE_OFFSET		0x0000
++#define FE_GDMA_OFFSET		0x0020
++#define FE_PSE_OFFSET		0x0040
++#define FE_GDMA2_OFFSET		0x0060
++#define FE_CDMA_OFFSET		0x0080
++#define FE_DMA_VID0		0x00a8
++#define FE_PDMA_OFFSET		0x0100
++#define FE_PPE_OFFSET		0x0200
++#define FE_CMTABLE_OFFSET	0x0400
++#define FE_POLICYTABLE_OFFSET	0x1000
++
++#define RT5350_PDMA_OFFSET	0x0800
++#define RT5350_SDM_OFFSET	0x0c00
++
++#define FE_MDIO_ACCESS		(FE_FE_OFFSET + 0x00)
++#define FE_MDIO_CFG		(FE_FE_OFFSET + 0x04)
++#define FE_FE_GLO_CFG		(FE_FE_OFFSET + 0x08)
++#define FE_FE_RST_GL		(FE_FE_OFFSET + 0x0C)
++#define FE_FE_INT_STATUS	(FE_FE_OFFSET + 0x10)
++#define FE_FE_INT_ENABLE	(FE_FE_OFFSET + 0x14)
++#define FE_MDIO_CFG2		(FE_FE_OFFSET + 0x18)
++#define FE_FOC_TS_T		(FE_FE_OFFSET + 0x1C)
++
++#define	FE_GDMA1_FWD_CFG	(FE_GDMA_OFFSET + 0x00)
++#define FE_GDMA1_SCH_CFG	(FE_GDMA_OFFSET + 0x04)
++#define FE_GDMA1_SHPR_CFG	(FE_GDMA_OFFSET + 0x08)
++#define FE_GDMA1_MAC_ADRL	(FE_GDMA_OFFSET + 0x0C)
++#define FE_GDMA1_MAC_ADRH	(FE_GDMA_OFFSET + 0x10)
++
++#define	FE_GDMA2_FWD_CFG	(FE_GDMA2_OFFSET + 0x00)
++#define FE_GDMA2_SCH_CFG	(FE_GDMA2_OFFSET + 0x04)
++#define FE_GDMA2_SHPR_CFG	(FE_GDMA2_OFFSET + 0x08)
++#define FE_GDMA2_MAC_ADRL	(FE_GDMA2_OFFSET + 0x0C)
++#define FE_GDMA2_MAC_ADRH	(FE_GDMA2_OFFSET + 0x10)
++
++#define FE_PSE_FQ_CFG		(FE_PSE_OFFSET + 0x00)
++#define FE_CDMA_FC_CFG		(FE_PSE_OFFSET + 0x04)
++#define FE_GDMA1_FC_CFG		(FE_PSE_OFFSET + 0x08)
++#define FE_GDMA2_FC_CFG		(FE_PSE_OFFSET + 0x0C)
++
++#define FE_CDMA_CSG_CFG		(FE_CDMA_OFFSET + 0x00)
++#define FE_CDMA_SCH_CFG		(FE_CDMA_OFFSET + 0x04)
++
++#ifdef CONFIG_SOC_MT7621
++#define MT7620A_GDMA_OFFSET		0x0500
++#else
++#define MT7620A_GDMA_OFFSET		0x0600
++#endif
++#define	MT7620A_GDMA1_FWD_CFG		(MT7620A_GDMA_OFFSET + 0x00)
++#define MT7620A_FE_GDMA1_SCH_CFG	(MT7620A_GDMA_OFFSET + 0x04)
++#define MT7620A_FE_GDMA1_SHPR_CFG	(MT7620A_GDMA_OFFSET + 0x08)
++#define MT7620A_FE_GDMA1_MAC_ADRL	(MT7620A_GDMA_OFFSET + 0x0C)
++#define MT7620A_FE_GDMA1_MAC_ADRH	(MT7620A_GDMA_OFFSET + 0x10)
++
++#define RT5350_TX_BASE_PTR0	(RT5350_PDMA_OFFSET + 0x00)
++#define RT5350_TX_MAX_CNT0	(RT5350_PDMA_OFFSET + 0x04)
++#define RT5350_TX_CTX_IDX0	(RT5350_PDMA_OFFSET + 0x08)
++#define RT5350_TX_DTX_IDX0	(RT5350_PDMA_OFFSET + 0x0C)
++#define RT5350_TX_BASE_PTR1	(RT5350_PDMA_OFFSET + 0x10)
++#define RT5350_TX_MAX_CNT1	(RT5350_PDMA_OFFSET + 0x14)
++#define RT5350_TX_CTX_IDX1	(RT5350_PDMA_OFFSET + 0x18)
++#define RT5350_TX_DTX_IDX1	(RT5350_PDMA_OFFSET + 0x1C)
++#define RT5350_TX_BASE_PTR2	(RT5350_PDMA_OFFSET + 0x20)
++#define RT5350_TX_MAX_CNT2	(RT5350_PDMA_OFFSET + 0x24)
++#define RT5350_TX_CTX_IDX2	(RT5350_PDMA_OFFSET + 0x28)
++#define RT5350_TX_DTX_IDX2	(RT5350_PDMA_OFFSET + 0x2C)
++#define RT5350_TX_BASE_PTR3	(RT5350_PDMA_OFFSET + 0x30)
++#define RT5350_TX_MAX_CNT3	(RT5350_PDMA_OFFSET + 0x34)
++#define RT5350_TX_CTX_IDX3	(RT5350_PDMA_OFFSET + 0x38)
++#define RT5350_TX_DTX_IDX3	(RT5350_PDMA_OFFSET + 0x3C)
++#define RT5350_RX_BASE_PTR0	(RT5350_PDMA_OFFSET + 0x100)
++#define RT5350_RX_MAX_CNT0	(RT5350_PDMA_OFFSET + 0x104)
++#define RT5350_RX_CALC_IDX0	(RT5350_PDMA_OFFSET + 0x108)
++#define RT5350_RX_DRX_IDX0	(RT5350_PDMA_OFFSET + 0x10C)
++#define RT5350_RX_BASE_PTR1	(RT5350_PDMA_OFFSET + 0x110)
++#define RT5350_RX_MAX_CNT1	(RT5350_PDMA_OFFSET + 0x114)
++#define RT5350_RX_CALC_IDX1	(RT5350_PDMA_OFFSET + 0x118)
++#define RT5350_RX_DRX_IDX1	(RT5350_PDMA_OFFSET + 0x11C)
++#define RT5350_PDMA_GLO_CFG	(RT5350_PDMA_OFFSET + 0x204)
++#define RT5350_PDMA_RST_CFG	(RT5350_PDMA_OFFSET + 0x208)
++#define RT5350_DLY_INT_CFG	(RT5350_PDMA_OFFSET + 0x20c)
++#define RT5350_FE_INT_STATUS	(RT5350_PDMA_OFFSET + 0x220)
++#define RT5350_FE_INT_ENABLE	(RT5350_PDMA_OFFSET + 0x228)
++#define RT5350_PDMA_SCH_CFG	(RT5350_PDMA_OFFSET + 0x280)
++
++#define FE_PDMA_GLO_CFG		(FE_PDMA_OFFSET + 0x00)
++#define FE_PDMA_RST_CFG		(FE_PDMA_OFFSET + 0x04)
++#define FE_PDMA_SCH_CFG		(FE_PDMA_OFFSET + 0x08)
++#define FE_DLY_INT_CFG		(FE_PDMA_OFFSET + 0x0C)
++#define FE_TX_BASE_PTR0		(FE_PDMA_OFFSET + 0x10)
++#define FE_TX_MAX_CNT0		(FE_PDMA_OFFSET + 0x14)
++#define FE_TX_CTX_IDX0		(FE_PDMA_OFFSET + 0x18)
++#define FE_TX_DTX_IDX0		(FE_PDMA_OFFSET + 0x1C)
++#define FE_TX_BASE_PTR1		(FE_PDMA_OFFSET + 0x20)
++#define FE_TX_MAX_CNT1		(FE_PDMA_OFFSET + 0x24)
++#define FE_TX_CTX_IDX1		(FE_PDMA_OFFSET + 0x28)
++#define FE_TX_DTX_IDX1		(FE_PDMA_OFFSET + 0x2C)
++#define FE_RX_BASE_PTR0		(FE_PDMA_OFFSET + 0x30)
++#define FE_RX_MAX_CNT0		(FE_PDMA_OFFSET + 0x34)
++#define FE_RX_CALC_IDX0		(FE_PDMA_OFFSET + 0x38)
++#define FE_RX_DRX_IDX0		(FE_PDMA_OFFSET + 0x3C)
++#define FE_TX_BASE_PTR2		(FE_PDMA_OFFSET + 0x40)
++#define FE_TX_MAX_CNT2		(FE_PDMA_OFFSET + 0x44)
++#define FE_TX_CTX_IDX2		(FE_PDMA_OFFSET + 0x48)
++#define FE_TX_DTX_IDX2		(FE_PDMA_OFFSET + 0x4C)
++#define FE_TX_BASE_PTR3		(FE_PDMA_OFFSET + 0x50)
++#define FE_TX_MAX_CNT3		(FE_PDMA_OFFSET + 0x54)
++#define FE_TX_CTX_IDX3		(FE_PDMA_OFFSET + 0x58)
++#define FE_TX_DTX_IDX3		(FE_PDMA_OFFSET + 0x5C)
++#define FE_RX_BASE_PTR1		(FE_PDMA_OFFSET + 0x60)
++#define FE_RX_MAX_CNT1		(FE_PDMA_OFFSET + 0x64)
++#define FE_RX_CALC_IDX1		(FE_PDMA_OFFSET + 0x68)
++#define FE_RX_DRX_IDX1		(FE_PDMA_OFFSET + 0x6C)
++
++/* Switch DMA configuration */
++#define RT5350_SDM_CFG		(RT5350_SDM_OFFSET + 0x00)
++#define RT5350_SDM_RRING	(RT5350_SDM_OFFSET + 0x04)
++#define RT5350_SDM_TRING	(RT5350_SDM_OFFSET + 0x08)
++#define RT5350_SDM_MAC_ADRL	(RT5350_SDM_OFFSET + 0x0C)
++#define RT5350_SDM_MAC_ADRH	(RT5350_SDM_OFFSET + 0x10)
++#define RT5350_SDM_TPCNT	(RT5350_SDM_OFFSET + 0x100)
++#define RT5350_SDM_TBCNT	(RT5350_SDM_OFFSET + 0x104)
++#define RT5350_SDM_RPCNT	(RT5350_SDM_OFFSET + 0x108)
++#define RT5350_SDM_RBCNT	(RT5350_SDM_OFFSET + 0x10C)
++#define RT5350_SDM_CS_ERR	(RT5350_SDM_OFFSET + 0x110)
++
++#define RT5350_SDM_ICS_EN	BIT(16)
++#define RT5350_SDM_TCS_EN	BIT(17)
++#define RT5350_SDM_UCS_EN	BIT(18)
++
++/* MDIO_CFG register bits */
++#define FE_MDIO_CFG_AUTO_POLL_EN	BIT(29)
++#define FE_MDIO_CFG_GP1_BP_EN		BIT(16)
++#define FE_MDIO_CFG_GP1_FRC_EN		BIT(15)
++#define FE_MDIO_CFG_GP1_SPEED_10	(0 << 13)
++#define FE_MDIO_CFG_GP1_SPEED_100	(1 << 13)
++#define FE_MDIO_CFG_GP1_SPEED_1000	(2 << 13)
++#define FE_MDIO_CFG_GP1_DUPLEX		BIT(12)
++#define FE_MDIO_CFG_GP1_FC_TX		BIT(11)
++#define FE_MDIO_CFG_GP1_FC_RX		BIT(10)
++#define FE_MDIO_CFG_GP1_LNK_DWN		BIT(9)
++#define FE_MDIO_CFG_GP1_AN_FAIL		BIT(8)
++#define FE_MDIO_CFG_MDC_CLK_DIV_1	(0 << 6)
++#define FE_MDIO_CFG_MDC_CLK_DIV_2	(1 << 6)
++#define FE_MDIO_CFG_MDC_CLK_DIV_4	(2 << 6)
++#define FE_MDIO_CFG_MDC_CLK_DIV_8	(3 << 6)
++#define FE_MDIO_CFG_TURBO_MII_FREQ	BIT(5)
++#define FE_MDIO_CFG_TURBO_MII_MODE	BIT(4)
++#define FE_MDIO_CFG_RX_CLK_SKEW_0	(0 << 2)
++#define FE_MDIO_CFG_RX_CLK_SKEW_200	(1 << 2)
++#define FE_MDIO_CFG_RX_CLK_SKEW_400	(2 << 2)
++#define FE_MDIO_CFG_RX_CLK_SKEW_INV	(3 << 2)
++#define FE_MDIO_CFG_TX_CLK_SKEW_0	0
++#define FE_MDIO_CFG_TX_CLK_SKEW_200	1
++#define FE_MDIO_CFG_TX_CLK_SKEW_400	2
++#define FE_MDIO_CFG_TX_CLK_SKEW_INV	3
++
++/* uni-cast port */
++#define FE_GDM1_JMB_LEN_MASK	0xf
++#define FE_GDM1_JMB_LEN_SHIFT	28
++#define FE_GDM1_ICS_EN		BIT(22)
++#define FE_GDM1_TCS_EN		BIT(21)
++#define FE_GDM1_UCS_EN		BIT(20)
++#define FE_GDM1_JMB_EN		BIT(19)
++#define FE_GDM1_STRPCRC		BIT(16)
++#define FE_GDM1_UFRC_P_CPU	(0 << 12)
++#define FE_GDM1_UFRC_P_GDMA1	(1 << 12)
++#define FE_GDM1_UFRC_P_PPE	(6 << 12)
++
++/* checksums */
++#define FE_ICS_GEN_EN		BIT(2)
++#define FE_UCS_GEN_EN		BIT(1)
++#define FE_TCS_GEN_EN		BIT(0)
++
++/* dma ring */
++#define FE_PST_DRX_IDX0		BIT(16)
++#define FE_PST_DTX_IDX3		BIT(3)
++#define FE_PST_DTX_IDX2		BIT(2)
++#define FE_PST_DTX_IDX1		BIT(1)
++#define FE_PST_DTX_IDX0		BIT(0)
++
++#define FE_RX_2B_OFFSET		BIT(31)
++#define FE_TX_WB_DDONE		BIT(6)
++#define FE_RX_DMA_BUSY		BIT(3)
++#define FE_TX_DMA_BUSY		BIT(1)
++#define FE_RX_DMA_EN		BIT(2)
++#define FE_TX_DMA_EN		BIT(0)
++
++#define FE_PDMA_SIZE_4DWORDS	(0 << 4)
++#define FE_PDMA_SIZE_8DWORDS	(1 << 4)
++#define FE_PDMA_SIZE_16DWORDS	(2 << 4)
++
++#define FE_US_CYC_CNT_MASK	0xff
++#define FE_US_CYC_CNT_SHIFT	0x8
++#define FE_US_CYC_CNT_DIVISOR	1000000
++
++/* rxd2 */
++#define RX_DMA_DONE		BIT(31)
++#define RX_DMA_LSO		BIT(30)
++#define RX_DMA_PLEN0(_x)	(((_x) & 0x3fff) << 16)
++#define RX_DMA_GET_PLEN0(_x)	(((_x) >> 16) & 0x3fff)
++#define RX_DMA_TAG		BIT(15)
++/* rxd3 */
++#define RX_DMA_TPID(_x)		(((_x) >> 16) & 0xffff)
++#define RX_DMA_VID(_x)		((_x) & 0xffff)
++/* rxd4 */
++#define RX_DMA_L4VALID		BIT(30)
++
++struct fe_rx_dma {
++	unsigned int rxd1;
++	unsigned int rxd2;
++	unsigned int rxd3;
++	unsigned int rxd4;
++} __packed __aligned(4);
++
++#define TX_DMA_BUF_LEN		0x3fff
++#define TX_DMA_PLEN0_MASK	(TX_DMA_BUF_LEN << 16)
++#define TX_DMA_PLEN0(_x)	(((_x) & TX_DMA_BUF_LEN) << 16)
++#define TX_DMA_PLEN1(_x)	((_x) & TX_DMA_BUF_LEN)
++#define TX_DMA_GET_PLEN0(_x)    (((_x) >> 16) & TX_DMA_BUF_LEN)
++#define TX_DMA_GET_PLEN1(_x)    ((_x) & TX_DMA_BUF_LEN)
++#define TX_DMA_LS1		BIT(14)
++#define TX_DMA_LS0		BIT(30)
++#define TX_DMA_DONE		BIT(31)
++
++#define TX_DMA_INS_VLAN_MT7621	BIT(16)
++#define TX_DMA_INS_VLAN		BIT(7)
++#define TX_DMA_INS_PPPOE	BIT(12)
++#define TX_DMA_QN(_x)		((_x) << 16)
++#define TX_DMA_PN(_x)		((_x) << 24)
++#define TX_DMA_QN_MASK		TX_DMA_QN(0x7)
++#define TX_DMA_PN_MASK		TX_DMA_PN(0x7)
++#define TX_DMA_UDF		BIT(20)
++#define TX_DMA_CHKSUM		(0x7 << 29)
++#define TX_DMA_TSO		BIT(28)
++
++/* frame engine counters */
++#define FE_PPE_AC_BCNT0		(FE_CMTABLE_OFFSET + 0x00)
++#define FE_GDMA1_TX_GBCNT	(FE_CMTABLE_OFFSET + 0x300)
++#define FE_GDMA2_TX_GBCNT	(FE_GDMA1_TX_GBCNT + 0x40)
++
++/* phy device flags */
++#define FE_PHY_FLAG_PORT	BIT(0)
++#define FE_PHY_FLAG_ATTACH	BIT(1)
++
++struct fe_tx_dma {
++	unsigned int txd1;
++	unsigned int txd2;
++	unsigned int txd3;
++	unsigned int txd4;
++} __packed __aligned(4);
++
++struct fe_priv;
++
++struct fe_phy {
++	/* make sure that phy operations are atomic */
++	spinlock_t		lock;
++
++	struct phy_device	*phy[8];
++	struct device_node	*phy_node[8];
++	const __be32		*phy_fixed[8];
++	int			duplex[8];
++	int			speed[8];
++	int			tx_fc[8];
++	int			rx_fc[8];
++	int (*connect)(struct fe_priv *priv);
++	void (*disconnect)(struct fe_priv *priv);
++	void (*start)(struct fe_priv *priv);
++	void (*stop)(struct fe_priv *priv);
++};
++
++struct fe_soc_data {
++	const u16 *reg_table;
++
++	void (*init_data)(struct fe_soc_data *data, struct net_device *netdev);
++	void (*reset_fe)(void);
++	void (*set_mac)(struct fe_priv *priv, unsigned char *mac);
++	int (*fwd_config)(struct fe_priv *priv);
++	void (*tx_dma)(struct fe_tx_dma *txd);
++	int (*switch_init)(struct fe_priv *priv);
++	void (*port_init)(struct fe_priv *priv, struct device_node *port);
++	int (*has_carrier)(struct fe_priv *priv);
++	int (*mdio_init)(struct fe_priv *priv);
++	void (*mdio_cleanup)(struct fe_priv *priv);
++	int (*mdio_write)(struct mii_bus *bus, int phy_addr, int phy_reg,
++			  u16 val);
++	int (*mdio_read)(struct mii_bus *bus, int phy_addr, int phy_reg);
++	void (*mdio_adjust_link)(struct fe_priv *priv, int port);
++
++	void *swpriv;
++	u32 pdma_glo_cfg;
++	u32 rx_int;
++	u32 tx_int;
++	u32 status_int;
++	u32 checksum_bit;
++};
++
++#define FE_FLAG_PADDING_64B		BIT(0)
++#define FE_FLAG_PADDING_BUG		BIT(1)
++#define FE_FLAG_JUMBO_FRAME		BIT(2)
++#define FE_FLAG_RX_2B_OFFSET		BIT(3)
++#define FE_FLAG_RX_SG_DMA		BIT(4)
++#define FE_FLAG_RX_VLAN_CTAG		BIT(5)
++#define FE_FLAG_NAPI_WEIGHT		BIT(6)
++#define FE_FLAG_CALIBRATE_CLK		BIT(7)
++#define FE_FLAG_HAS_SWITCH		BIT(8)
++
++#define FE_STAT_REG_DECLARE		\
++	_FE(tx_bytes)			\
++	_FE(tx_packets)			\
++	_FE(tx_skip)			\
++	_FE(tx_collisions)		\
++	_FE(rx_bytes)			\
++	_FE(rx_packets)			\
++	_FE(rx_overflow)		\
++	_FE(rx_fcs_errors)		\
++	_FE(rx_short_errors)		\
++	_FE(rx_long_errors)		\
++	_FE(rx_checksum_errors)		\
++	_FE(rx_flow_control_packets)
++
++struct fe_hw_stats {
++	/* make sure that stats operations are atomic */
++	spinlock_t stats_lock;
++
++	struct u64_stats_sync syncp;
++#define _FE(x) u64 x;
++	FE_STAT_REG_DECLARE
++#undef _FE
++};
++
++enum fe_tx_flags {
++	FE_TX_FLAGS_SINGLE0	= 0x01,
++	FE_TX_FLAGS_PAGE0	= 0x02,
++	FE_TX_FLAGS_PAGE1	= 0x04,
++};
++
++struct fe_tx_buf {
++	struct sk_buff *skb;
++	u32 flags;
++	DEFINE_DMA_UNMAP_ADDR(dma_addr0);
++	DEFINE_DMA_UNMAP_LEN(dma_len0);
++	DEFINE_DMA_UNMAP_ADDR(dma_addr1);
++	DEFINE_DMA_UNMAP_LEN(dma_len1);
++};
++
++struct fe_tx_ring {
++	struct fe_tx_dma *tx_dma;
++	struct fe_tx_buf *tx_buf;
++	dma_addr_t tx_phys;
++	u16 tx_ring_size;
++	u16 tx_free_idx;
++	u16 tx_next_idx;
++	u16 tx_thresh;
++};
++
++struct fe_rx_ring {
++	struct fe_rx_dma *rx_dma;
++	u8 **rx_data;
++	dma_addr_t rx_phys;
++	u16 rx_ring_size;
++	u16 frag_size;
++	u16 rx_buf_size;
++	u16 rx_calc_idx;
++};
++
++struct fe_priv {
++	/* make sure that register operations are atomic */
++	spinlock_t			page_lock;
++
++	struct fe_soc_data		*soc;
++	struct net_device		*netdev;
++	struct device_node		*switch_np;
++	u32				msg_enable;
++	u32				flags;
++
++	struct device			*device;
++	unsigned long			sysclk;
++
++	struct fe_rx_ring		rx_ring;
++	struct napi_struct		rx_napi;
++
++	struct fe_tx_ring               tx_ring;
++
++	struct fe_phy			*phy;
++	struct mii_bus			*mii_bus;
++	struct phy_device		*phy_dev;
++	u32				phy_flags;
++
++	int				link[8];
++
++	struct fe_hw_stats		*hw_stats;
++	unsigned long			vlan_map;
++	struct work_struct		pending_work;
++	DECLARE_BITMAP(pending_flags, FE_FLAG_MAX);
++};
++
++extern const struct of_device_id of_fe_match[];
++
++void fe_w32(u32 val, unsigned reg);
++u32 fe_r32(unsigned reg);
++
++int fe_set_clock_cycle(struct fe_priv *priv);
++void fe_csum_config(struct fe_priv *priv);
++void fe_stats_update(struct fe_priv *priv);
++void fe_fwd_config(struct fe_priv *priv);
++void fe_reg_w32(u32 val, enum fe_reg reg);
++u32 fe_reg_r32(enum fe_reg reg);
++
++void fe_reset(u32 reset_bits);
++
++static inline void *priv_netdev(struct fe_priv *priv)
++{
++	return (char *)priv - ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
++}
++
++#endif /* FE_ETH_H */

target/linux/ramips/patches-4.4/0502-net-next-mediatek-add-switch-driver-for-rt3050.patch

@@ -0,0 +1,691 @@
+From 2c39ddc83452c34fedc86261ed1f96d7537adfd1 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:28:10 +0100
+Subject: [PATCH 502/513] net-next: mediatek: add switch driver for rt3050
+
+This driver is very basic and only provides basic init and irq support.
+Switchdev support for this device will follow.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/esw_rt3050.c |  640 ++++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/esw_rt3050.h |   29 ++
+ 2 files changed, 669 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/esw_rt3050.c
+ create mode 100644 drivers/net/ethernet/mediatek/esw_rt3050.h
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/esw_rt3050.c
+@@ -0,0 +1,640 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/dma-mapping.h>
++#include <linux/init.h>
++#include <linux/skbuff.h>
++#include <linux/etherdevice.h>
++#include <linux/ethtool.h>
++#include <linux/platform_device.h>
++#include <linux/of_device.h>
++#include <linux/clk.h>
++#include <linux/of_net.h>
++#include <linux/of_mdio.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++
++#include <linux/ioport.h>
++#include <linux/mii.h>
++
++#include <ralink_regs.h>
++
++/* HW limitations for this switch:
++ * - No large frame support (PKT_MAX_LEN at most 1536)
++ * - Can't have untagged vlan and tagged vlan on one port at the same time,
++ *   though this might be possible using the undocumented PPE.
++ */
++
++#define RT305X_ESW_REG_ISR		0x00
++#define RT305X_ESW_REG_IMR		0x04
++#define RT305X_ESW_REG_FCT0		0x08
++#define RT305X_ESW_REG_PFC1		0x14
++#define RT305X_ESW_REG_ATS		0x24
++#define RT305X_ESW_REG_ATS0		0x28
++#define RT305X_ESW_REG_ATS1		0x2c
++#define RT305X_ESW_REG_ATS2		0x30
++#define RT305X_ESW_REG_PVIDC(_n)	(0x40 + 4 * (_n))
++#define RT305X_ESW_REG_VLANI(_n)	(0x50 + 4 * (_n))
++#define RT305X_ESW_REG_VMSC(_n)		(0x70 + 4 * (_n))
++#define RT305X_ESW_REG_POA		0x80
++#define RT305X_ESW_REG_FPA		0x84
++#define RT305X_ESW_REG_SOCPC		0x8c
++#define RT305X_ESW_REG_POC0		0x90
++#define RT305X_ESW_REG_POC1		0x94
++#define RT305X_ESW_REG_POC2		0x98
++#define RT305X_ESW_REG_SGC		0x9c
++#define RT305X_ESW_REG_STRT		0xa0
++#define RT305X_ESW_REG_PCR0		0xc0
++#define RT305X_ESW_REG_PCR1		0xc4
++#define RT305X_ESW_REG_FPA2		0xc8
++#define RT305X_ESW_REG_FCT2		0xcc
++#define RT305X_ESW_REG_SGC2		0xe4
++#define RT305X_ESW_REG_P0LED		0xa4
++#define RT305X_ESW_REG_P1LED		0xa8
++#define RT305X_ESW_REG_P2LED		0xac
++#define RT305X_ESW_REG_P3LED		0xb0
++#define RT305X_ESW_REG_P4LED		0xb4
++#define RT305X_ESW_REG_PXPC(_x)		(0xe8 + (4 * _x))
++#define RT305X_ESW_REG_P1PC		0xec
++#define RT305X_ESW_REG_P2PC		0xf0
++#define RT305X_ESW_REG_P3PC		0xf4
++#define RT305X_ESW_REG_P4PC		0xf8
++#define RT305X_ESW_REG_P5PC		0xfc
++
++#define RT305X_ESW_LED_LINK		0
++#define RT305X_ESW_LED_100M		1
++#define RT305X_ESW_LED_DUPLEX		2
++#define RT305X_ESW_LED_ACTIVITY		3
++#define RT305X_ESW_LED_COLLISION	4
++#define RT305X_ESW_LED_LINKACT		5
++#define RT305X_ESW_LED_DUPLCOLL		6
++#define RT305X_ESW_LED_10MACT		7
++#define RT305X_ESW_LED_100MACT		8
++/* Additional led states not in datasheet: */
++#define RT305X_ESW_LED_BLINK		10
++#define RT305X_ESW_LED_ON		12
++
++#define RT305X_ESW_LINK_S		25
++#define RT305X_ESW_DUPLEX_S		9
++#define RT305X_ESW_SPD_S		0
++
++#define RT305X_ESW_PCR0_WT_NWAY_DATA_S	16
++#define RT305X_ESW_PCR0_WT_PHY_CMD	BIT(13)
++#define RT305X_ESW_PCR0_CPU_PHY_REG_S	8
++
++#define RT305X_ESW_PCR1_WT_DONE		BIT(0)
++
++#define RT305X_ESW_ATS_TIMEOUT		(5 * HZ)
++#define RT305X_ESW_PHY_TIMEOUT		(5 * HZ)
++
++#define RT305X_ESW_PVIDC_PVID_M		0xfff
++#define RT305X_ESW_PVIDC_PVID_S		12
++
++#define RT305X_ESW_VLANI_VID_M		0xfff
++#define RT305X_ESW_VLANI_VID_S		12
++
++#define RT305X_ESW_VMSC_MSC_M		0xff
++#define RT305X_ESW_VMSC_MSC_S		8
++
++#define RT305X_ESW_SOCPC_DISUN2CPU_S	0
++#define RT305X_ESW_SOCPC_DISMC2CPU_S	8
++#define RT305X_ESW_SOCPC_DISBC2CPU_S	16
++#define RT305X_ESW_SOCPC_CRC_PADDING	BIT(25)
++
++#define RT305X_ESW_POC0_EN_BP_S		0
++#define RT305X_ESW_POC0_EN_FC_S		8
++#define RT305X_ESW_POC0_DIS_RMC2CPU_S	16
++#define RT305X_ESW_POC0_DIS_PORT_M	0x7f
++#define RT305X_ESW_POC0_DIS_PORT_S	23
++
++#define RT305X_ESW_POC2_UNTAG_EN_M	0xff
++#define RT305X_ESW_POC2_UNTAG_EN_S	0
++#define RT305X_ESW_POC2_ENAGING_S	8
++#define RT305X_ESW_POC2_DIS_UC_PAUSE_S	16
++
++#define RT305X_ESW_SGC2_DOUBLE_TAG_M	0x7f
++#define RT305X_ESW_SGC2_DOUBLE_TAG_S	0
++#define RT305X_ESW_SGC2_LAN_PMAP_M	0x3f
++#define RT305X_ESW_SGC2_LAN_PMAP_S	24
++
++#define RT305X_ESW_PFC1_EN_VLAN_M	0xff
++#define RT305X_ESW_PFC1_EN_VLAN_S	16
++#define RT305X_ESW_PFC1_EN_TOS_S	24
++
++#define RT305X_ESW_VLAN_NONE		0xfff
++
++#define RT305X_ESW_GSC_BC_STROM_MASK	0x3
++#define RT305X_ESW_GSC_BC_STROM_SHIFT	4
++
++#define RT305X_ESW_GSC_LED_FREQ_MASK	0x3
++#define RT305X_ESW_GSC_LED_FREQ_SHIFT	23
++
++#define RT305X_ESW_POA_LINK_MASK	0x1f
++#define RT305X_ESW_POA_LINK_SHIFT	25
++
++#define RT305X_ESW_PORT_ST_CHG		BIT(26)
++#define RT305X_ESW_PORT0		0
++#define RT305X_ESW_PORT1		1
++#define RT305X_ESW_PORT2		2
++#define RT305X_ESW_PORT3		3
++#define RT305X_ESW_PORT4		4
++#define RT305X_ESW_PORT5		5
++#define RT305X_ESW_PORT6		6
++
++#define RT305X_ESW_PMAP_LLLLLL		0x3f
++#define RT305X_ESW_PMAP_LLLLWL		0x2f
++#define RT305X_ESW_PMAP_WLLLLL		0x3e
++
++#define RT305X_ESW_PORTS_INTERNAL					\
++		(BIT(RT305X_ESW_PORT0) | BIT(RT305X_ESW_PORT1) |	\
++		 BIT(RT305X_ESW_PORT2) | BIT(RT305X_ESW_PORT3) |	\
++		 BIT(RT305X_ESW_PORT4))
++
++#define RT305X_ESW_PORTS_NOCPU						\
++		(RT305X_ESW_PORTS_INTERNAL | BIT(RT305X_ESW_PORT5))
++
++#define RT305X_ESW_PORTS_CPU	BIT(RT305X_ESW_PORT6)
++
++#define RT305X_ESW_PORTS_ALL						\
++		(RT305X_ESW_PORTS_NOCPU | RT305X_ESW_PORTS_CPU)
++
++#define RT305X_ESW_NUM_PORTS		7
++#define RT305X_ESW_NUM_LEDS		5
++
++#define RT5350_EWS_REG_LED_POLARITY	0x168
++#define RT5350_RESET_EPHY		BIT(24)
++
++struct esw_port {
++	bool	disable;
++	u8	led;
++};
++
++struct rt305x_esw {
++	struct device		*dev;
++	void __iomem		*base;
++	int			irq;
++
++	/* Protects against concurrent register r/w operations. */
++	spinlock_t		reg_rw_lock;
++
++	unsigned char		port_map;
++	unsigned int		reg_led_polarity;
++
++	struct esw_port ports[RT305X_ESW_NUM_PORTS];
++
++};
++
++static inline void esw_w32(struct rt305x_esw *esw, u32 val, unsigned reg)
++{
++	__raw_writel(val, esw->base + reg);
++}
++
++static inline u32 esw_r32(struct rt305x_esw *esw, unsigned reg)
++{
++	return __raw_readl(esw->base + reg);
++}
++
++static inline void esw_rmw_raw(struct rt305x_esw *esw, unsigned reg,
++			       unsigned long mask, unsigned long val)
++{
++	unsigned long t;
++
++	t = __raw_readl(esw->base + reg) & ~mask;
++	__raw_writel(t | val, esw->base + reg);
++}
++
++static void esw_rmw(struct rt305x_esw *esw, unsigned reg,
++		    unsigned long mask, unsigned long val)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&esw->reg_rw_lock, flags);
++	esw_rmw_raw(esw, reg, mask, val);
++	spin_unlock_irqrestore(&esw->reg_rw_lock, flags);
++}
++
++static u32 rt305x_mii_write(struct rt305x_esw *esw, u32 phy_addr,
++			    u32 phy_register, u32 write_data)
++{
++	unsigned long t_start = jiffies;
++	int ret = 0;
++
++	while (1) {
++		if (!(esw_r32(esw, RT305X_ESW_REG_PCR1) &
++		      RT305X_ESW_PCR1_WT_DONE))
++			break;
++		if (time_after(jiffies, t_start + RT305X_ESW_PHY_TIMEOUT)) {
++			ret = 1;
++			goto out;
++		}
++	}
++
++	write_data &= 0xffff;
++	esw_w32(esw, (write_data << RT305X_ESW_PCR0_WT_NWAY_DATA_S) |
++		      (phy_register << RT305X_ESW_PCR0_CPU_PHY_REG_S) |
++		      (phy_addr) | RT305X_ESW_PCR0_WT_PHY_CMD,
++		RT305X_ESW_REG_PCR0);
++
++	t_start = jiffies;
++	while (1) {
++		if (esw_r32(esw, RT305X_ESW_REG_PCR1) &
++			    RT305X_ESW_PCR1_WT_DONE)
++			break;
++
++		if (time_after(jiffies, t_start + RT305X_ESW_PHY_TIMEOUT)) {
++			ret = 1;
++			break;
++		}
++	}
++out:
++	if (ret)
++		dev_err(esw->dev, "ramips_eth: MDIO timeout\n");
++	return ret;
++}
++
++static unsigned esw_get_port_disable(struct rt305x_esw *esw)
++{
++	unsigned reg;
++
++	reg = esw_r32(esw, RT305X_ESW_REG_POC0);
++	return (reg >> RT305X_ESW_POC0_DIS_PORT_S) &
++	       RT305X_ESW_POC0_DIS_PORT_M;
++}
++
++static void esw_hw_init(struct rt305x_esw *esw)
++{
++	int i;
++	u8 port_disable = 0;
++	u8 port_map = RT305X_ESW_PMAP_LLLLLL;
++
++	/* vodoo from original driver */
++	esw_w32(esw, 0xC8A07850, RT305X_ESW_REG_FCT0);
++	esw_w32(esw, 0x00000000, RT305X_ESW_REG_SGC2);
++	/* Port priority 1 for all ports, vlan enabled. */
++	esw_w32(esw, 0x00005555 |
++		     (RT305X_ESW_PORTS_ALL << RT305X_ESW_PFC1_EN_VLAN_S),
++		RT305X_ESW_REG_PFC1);
++
++	/* Enable Back Pressure, and Flow Control */
++	esw_w32(esw, ((RT305X_ESW_PORTS_ALL << RT305X_ESW_POC0_EN_BP_S) |
++		      (RT305X_ESW_PORTS_ALL << RT305X_ESW_POC0_EN_FC_S)),
++		RT305X_ESW_REG_POC0);
++
++	/* Enable Aging, and VLAN TAG removal */
++	esw_w32(esw, ((RT305X_ESW_PORTS_ALL << RT305X_ESW_POC2_ENAGING_S) |
++		      (RT305X_ESW_PORTS_NOCPU << RT305X_ESW_POC2_UNTAG_EN_S)),
++		RT305X_ESW_REG_POC2);
++
++	esw_w32(esw, 0x00d6500c, RT305X_ESW_REG_FCT2);
++
++	/* 300s aging timer, max packet len 1536, broadcast storm prevention
++	 * disabled, disable collision abort, mac xor48 hash, 10 packet back
++	 * pressure jam, GMII disable was_transmit, back pressure disabled,
++	 * 30ms led flash, unmatched IGMP as broadcast, rmc tb fault to all
++	 * ports.
++	 */
++	esw_w32(esw, 0x0008a301, RT305X_ESW_REG_SGC);
++
++	/* Setup SoC Port control register */
++	esw_w32(esw,
++		(RT305X_ESW_SOCPC_CRC_PADDING |
++		(RT305X_ESW_PORTS_CPU << RT305X_ESW_SOCPC_DISUN2CPU_S) |
++		(RT305X_ESW_PORTS_CPU << RT305X_ESW_SOCPC_DISMC2CPU_S) |
++		(RT305X_ESW_PORTS_CPU << RT305X_ESW_SOCPC_DISBC2CPU_S)),
++		RT305X_ESW_REG_SOCPC);
++
++	/* ext phy base addr 31, enable port 5 polling, rx/tx clock skew 1,
++	 * turbo mii off, rgmi 3.3v off
++	 * port5: disabled
++	 * port6: enabled, gige, full-duplex, rx/tx-flow-control
++	 */
++	esw_w32(esw, 0x3f502b28, RT305X_ESW_REG_FPA2);
++	esw_w32(esw, 0x00000000, RT305X_ESW_REG_FPA);
++
++	/* Force Link/Activity on ports */
++	esw_w32(esw, 0x00000005, RT305X_ESW_REG_P0LED);
++	esw_w32(esw, 0x00000005, RT305X_ESW_REG_P1LED);
++	esw_w32(esw, 0x00000005, RT305X_ESW_REG_P2LED);
++	esw_w32(esw, 0x00000005, RT305X_ESW_REG_P3LED);
++	esw_w32(esw, 0x00000005, RT305X_ESW_REG_P4LED);
++
++	/* Copy disabled port configuration from bootloader setup */
++	port_disable = esw_get_port_disable(esw);
++	for (i = 0; i < 6; i++)
++		esw->ports[i].disable = (port_disable & (1 << i)) != 0;
++
++	if (ralink_soc == RT305X_SOC_RT3352) {
++		/* reset EPHY */
++		fe_reset(RT5350_RESET_EPHY);
++
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++		for (i = 0; i < 5; i++) {
++			if (esw->ports[i].disable) {
++				rt305x_mii_write(esw, i, MII_BMCR, BMCR_PDOWN);
++			} else {
++				rt305x_mii_write(esw, i, MII_BMCR,
++						 BMCR_FULLDPLX |
++						 BMCR_ANENABLE |
++						 BMCR_SPEED100);
++			}
++			/* TX10 waveform coefficient LSB=0 disable PHY */
++			rt305x_mii_write(esw, i, 26, 0x1601);
++			/* TX100/TX10 AD/DA current bias */
++			rt305x_mii_write(esw, i, 29, 0x7016);
++			/* TX100 slew rate control */
++			rt305x_mii_write(esw, i, 30, 0x0038);
++		}
++
++		/* select global register */
++		rt305x_mii_write(esw, 0, 31, 0x0);
++		/* enlarge agcsel threshold 3 and threshold 2 */
++		rt305x_mii_write(esw, 0, 1, 0x4a40);
++		/* enlarge agcsel threshold 5 and threshold 4 */
++		rt305x_mii_write(esw, 0, 2, 0x6254);
++		/* enlarge agcsel threshold  */
++		rt305x_mii_write(esw, 0, 3, 0xa17f);
++		rt305x_mii_write(esw, 0, 12, 0x7eaa);
++		/* longer TP_IDL tail length */
++		rt305x_mii_write(esw, 0, 14, 0x65);
++		/* increased squelch pulse count threshold. */
++		rt305x_mii_write(esw, 0, 16, 0x0684);
++		/* set TX10 signal amplitude threshold to minimum */
++		rt305x_mii_write(esw, 0, 17, 0x0fe0);
++		/* set squelch amplitude to higher threshold */
++		rt305x_mii_write(esw, 0, 18, 0x40ba);
++		/* tune TP_IDL tail and head waveform, enable power
++		 * down slew rate control
++		 */
++		rt305x_mii_write(esw, 0, 22, 0x253f);
++		/* set PLL/Receive bias current are calibrated */
++		rt305x_mii_write(esw, 0, 27, 0x2fda);
++		/* change PLL/Receive bias current to internal(RT3350) */
++		rt305x_mii_write(esw, 0, 28, 0xc410);
++		/* change PLL bias current to internal(RT3052_MP3) */
++		rt305x_mii_write(esw, 0, 29, 0x598b);
++		/* select local register */
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++	} else if (ralink_soc == RT305X_SOC_RT5350) {
++		/* reset EPHY */
++		fe_reset(RT5350_RESET_EPHY);
++
++		/* set the led polarity */
++		esw_w32(esw, esw->reg_led_polarity & 0x1F,
++			RT5350_EWS_REG_LED_POLARITY);
++
++		/* local registers */
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++		for (i = 0; i < 5; i++) {
++			if (esw->ports[i].disable) {
++				rt305x_mii_write(esw, i, MII_BMCR, BMCR_PDOWN);
++			} else {
++				rt305x_mii_write(esw, i, MII_BMCR,
++						 BMCR_FULLDPLX |
++						 BMCR_ANENABLE |
++						 BMCR_SPEED100);
++			}
++			/* TX10 waveform coefficient LSB=0 disable PHY */
++			rt305x_mii_write(esw, i, 26, 0x1601);
++			/* TX100/TX10 AD/DA current bias */
++			rt305x_mii_write(esw, i, 29, 0x7015);
++			/* TX100 slew rate control */
++			rt305x_mii_write(esw, i, 30, 0x0038);
++		}
++
++		/* global registers */
++		rt305x_mii_write(esw, 0, 31, 0x0);
++		/* enlarge agcsel threshold 3 and threshold 2 */
++		rt305x_mii_write(esw, 0, 1, 0x4a40);
++		/* enlarge agcsel threshold 5 and threshold 4 */
++		rt305x_mii_write(esw, 0, 2, 0x6254);
++		/* enlarge agcsel threshold 6 */
++		rt305x_mii_write(esw, 0, 3, 0xa17f);
++		rt305x_mii_write(esw, 0, 12, 0x7eaa);
++		/* longer TP_IDL tail length */
++		rt305x_mii_write(esw, 0, 14, 0x65);
++		/* increased squelch pulse count threshold. */
++		rt305x_mii_write(esw, 0, 16, 0x0684);
++		/* set TX10 signal amplitude threshold to minimum */
++		rt305x_mii_write(esw, 0, 17, 0x0fe0);
++		/* set squelch amplitude to higher threshold */
++		rt305x_mii_write(esw, 0, 18, 0x40ba);
++		/* tune TP_IDL tail and head waveform, enable power
++		 * down slew rate control
++		 */
++		rt305x_mii_write(esw, 0, 22, 0x253f);
++		/* set PLL/Receive bias current are calibrated */
++		rt305x_mii_write(esw, 0, 27, 0x2fda);
++		/* change PLL/Receive bias current to internal(RT3350) */
++		rt305x_mii_write(esw, 0, 28, 0xc410);
++		/* change PLL bias current to internal(RT3052_MP3) */
++		rt305x_mii_write(esw, 0, 29, 0x598b);
++		/* select local register */
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++	} else if (ralink_soc == MT762X_SOC_MT7628AN || ralink_soc == MT762X_SOC_MT7688) {
++		int i;
++
++		/* reset EPHY */
++		fe_reset(RT5350_RESET_EPHY);
++
++		rt305x_mii_write(esw, 0, 31, 0x2000); /* change G2 page */
++		rt305x_mii_write(esw, 0, 26, 0x0020);
++
++		for (i = 0; i < 5; i++) {
++			rt305x_mii_write(esw, i, 31, 0x8000);
++			rt305x_mii_write(esw, i,  0, 0x3100);
++			rt305x_mii_write(esw, i, 30, 0xa000);
++			rt305x_mii_write(esw, i, 31, 0xa000);
++			rt305x_mii_write(esw, i, 16, 0x0606);
++			rt305x_mii_write(esw, i, 23, 0x0f0e);
++			rt305x_mii_write(esw, i, 24, 0x1610);
++			rt305x_mii_write(esw, i, 30, 0x1f15);
++			rt305x_mii_write(esw, i, 28, 0x6111);
++			rt305x_mii_write(esw, i, 31, 0x2000);
++			rt305x_mii_write(esw, i, 26, 0x0000);
++		}
++
++		/* 100Base AOI setting */
++		rt305x_mii_write(esw, 0, 31, 0x5000);
++		rt305x_mii_write(esw, 0, 19, 0x004a);
++		rt305x_mii_write(esw, 0, 20, 0x015a);
++		rt305x_mii_write(esw, 0, 21, 0x00ee);
++		rt305x_mii_write(esw, 0, 22, 0x0033);
++		rt305x_mii_write(esw, 0, 23, 0x020a);
++		rt305x_mii_write(esw, 0, 24, 0x0000);
++		rt305x_mii_write(esw, 0, 25, 0x024a);
++		rt305x_mii_write(esw, 0, 26, 0x035a);
++		rt305x_mii_write(esw, 0, 27, 0x02ee);
++		rt305x_mii_write(esw, 0, 28, 0x0233);
++		rt305x_mii_write(esw, 0, 29, 0x000a);
++		rt305x_mii_write(esw, 0, 30, 0x0000);
++	} else {
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++		for (i = 0; i < 5; i++) {
++			if (esw->ports[i].disable) {
++				rt305x_mii_write(esw, i, MII_BMCR, BMCR_PDOWN);
++			} else {
++				rt305x_mii_write(esw, i, MII_BMCR,
++						 BMCR_FULLDPLX |
++						 BMCR_ANENABLE |
++						 BMCR_SPEED100);
++			}
++			/* TX10 waveform coefficient */
++			rt305x_mii_write(esw, i, 26, 0x1601);
++			/* TX100/TX10 AD/DA current bias */
++			rt305x_mii_write(esw, i, 29, 0x7058);
++			/* TX100 slew rate control */
++			rt305x_mii_write(esw, i, 30, 0x0018);
++		}
++
++		/* PHY IOT */
++		/* select global register */
++		rt305x_mii_write(esw, 0, 31, 0x0);
++		/* tune TP_IDL tail and head waveform */
++		rt305x_mii_write(esw, 0, 22, 0x052f);
++		/* set TX10 signal amplitude threshold to minimum */
++		rt305x_mii_write(esw, 0, 17, 0x0fe0);
++		/* set squelch amplitude to higher threshold */
++		rt305x_mii_write(esw, 0, 18, 0x40ba);
++		/* longer TP_IDL tail length */
++		rt305x_mii_write(esw, 0, 14, 0x65);
++		/* select local register */
++		rt305x_mii_write(esw, 0, 31, 0x8000);
++	}
++
++	if (esw->port_map)
++		port_map = esw->port_map;
++	else
++		port_map = RT305X_ESW_PMAP_LLLLLL;
++
++	/* Unused HW feature, but still nice to be consistent here...
++	 * This is also exported to userspace ('lan' attribute) so it's
++	 * conveniently usable to decide which ports go into the wan vlan by
++	 * default.
++	 */
++	esw_rmw(esw, RT305X_ESW_REG_SGC2,
++		RT305X_ESW_SGC2_LAN_PMAP_M << RT305X_ESW_SGC2_LAN_PMAP_S,
++		port_map << RT305X_ESW_SGC2_LAN_PMAP_S);
++
++	/* make the switch leds blink */
++	for (i = 0; i < RT305X_ESW_NUM_LEDS; i++)
++		esw->ports[i].led = 0x05;
++
++	/* Only unmask the port change interrupt */
++	esw_w32(esw, ~RT305X_ESW_PORT_ST_CHG, RT305X_ESW_REG_IMR);
++}
++
++static irqreturn_t esw_interrupt(int irq, void *_esw)
++{
++	struct rt305x_esw *esw = (struct rt305x_esw *)_esw;
++	u32 status;
++
++	status = esw_r32(esw, RT305X_ESW_REG_ISR);
++	if (status & RT305X_ESW_PORT_ST_CHG) {
++		u32 link = esw_r32(esw, RT305X_ESW_REG_POA);
++
++		link >>= RT305X_ESW_POA_LINK_SHIFT;
++		link &= RT305X_ESW_POA_LINK_MASK;
++		dev_info(esw->dev, "link changed 0x%02X\n", link);
++	}
++	esw_w32(esw, status, RT305X_ESW_REG_ISR);
++
++	return IRQ_HANDLED;
++}
++
++static int esw_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(p, IORESOURCE_MEM, 0);
++	struct device_node *np = pdev->dev.of_node;
++	const __be32 *port_map, *reg_init;
++	struct rt305x_esw *esw;
++	struct resource *irq;
++	int ret;
++
++	esw = devm_kzalloc(&pdev->dev, sizeof(*esw), GFP_KERNEL);
++	if (!esw)
++		return -ENOMEM;
++
++	esw->dev = &pdev->dev;
++	esw->irq = irq->start;
++	esw->base = devm_ioremap_resource(&pdev->dev, res);
++	if (!esw->base)
++		return -EADDRNOTAVAIL;
++
++	port_map = of_get_property(np, "mediatek,portmap", NULL);
++	if (port_map)
++		esw->port_map = be32_to_cpu(*port_map);
++
++	reg_init = of_get_property(np, "mediatek,led_polarity", NULL);
++	if (reg_init)
++		esw->reg_led_polarity = be32_to_cpu(*reg_init);
++
++	platform_set_drvdata(pdev, esw);
++
++	spin_lock_init(&esw->reg_rw_lock);
++
++	esw_hw_init(esw);
++
++	ret = devm_request_irq(&pdev->dev, esw->irq, esw_interrupt, 0, "esw",
++			       esw);
++
++	if (!ret) {
++		esw_w32(esw, RT305X_ESW_PORT_ST_CHG, RT305X_ESW_REG_ISR);
++		esw_w32(esw, ~RT305X_ESW_PORT_ST_CHG, RT305X_ESW_REG_IMR);
++	}
++
++	return ret;
++}
++
++static int esw_remove(struct platform_device *pdev)
++{
++	struct rt305x_esw *esw = platform_get_drvdata(pdev);
++
++	if (esw) {
++		esw_w32(esw, ~0, RT305X_ESW_REG_IMR);
++		platform_set_drvdata(pdev, NULL);
++	}
++
++	return 0;
++}
++
++static const struct of_device_id ralink_esw_match[] = {
++	{ .compatible = "ralink,rt3050-esw" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, ralink_esw_match);
++
++static struct platform_driver esw_driver = {
++	.probe = esw_probe,
++	.remove = esw_remove,
++	.driver = {
++		.name = "rt3050-esw",
++		.owner = THIS_MODULE,
++		.of_match_table = ralink_esw_match,
++	},
++};
++
++int __init mtk_switch_init(void)
++{
++	return platform_driver_register(&esw_driver);
++}
++
++void mtk_switch_exit(void)
++{
++	platform_driver_unregister(&esw_driver);
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/esw_rt3050.h
+@@ -0,0 +1,29 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef _RALINK_ESW_RT3052_H__
++#define _RALINK_ESW_RT3052_H__
++
++#ifdef CONFIG_NET_MEDIATEK_ESW_RT3052
++
++int __init mtk_switch_init(void);
++void mtk_switch_exit(void);
++
++#else
++
++static inline int __init mtk_switch_init(void) { return 0; }
++static inline void mtk_switch_exit(void) { }
++
++#endif
++#endif

target/linux/ramips/patches-4.4/0503-net-next-mediatek-add-switch-driver-for-mt7620.patch

@@ -0,0 +1,394 @@
+From 322a9598692943961791ac6e5a3f385b379dcdc3 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:23:18 +0100
+Subject: [PATCH 503/513] net-next: mediatek: add switch driver for mt7620
+
+This driver is very basic and only provides basic init and irq support.
+Switchdev support for this device will follow.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/gsw_mt7620.c |  255 ++++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/gsw_mt7620.h |  117 +++++++++++++
+ 2 files changed, 372 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/gsw_mt7620.c
+ create mode 100644 drivers/net/ethernet/mediatek/gsw_mt7620.h
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/gsw_mt7620.c
+@@ -0,0 +1,255 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/platform_device.h>
++#include <linux/of_device.h>
++#include <linux/of_irq.h>
++
++#include <ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "gsw_mt7620.h"
++
++void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned reg)
++{
++	iowrite32(val, gsw->base + reg);
++}
++
++u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned reg)
++{
++	return ioread32(gsw->base + reg);
++}
++
++static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv)
++{
++	struct fe_priv *priv = (struct fe_priv *)_priv;
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++	u32 status;
++	int i, max = (gsw->port4 == PORT4_EPHY) ? (4) : (3);
++
++	status = mtk_switch_r32(gsw, GSW_REG_ISR);
++	if (status & PORT_IRQ_ST_CHG)
++		for (i = 0; i <= max; i++) {
++			u32 status = mtk_switch_r32(gsw, GSW_REG_PORT_STATUS(i));
++			int link = status & 0x1;
++
++			if (link != priv->link[i])
++				mt7620_print_link_state(priv, i, link,
++							(status >> 2) & 3,
++							(status & 0x2));
++
++			priv->link[i] = link;
++		}
++	mtk_switch_w32(gsw, status, GSW_REG_ISR);
++
++	return IRQ_HANDLED;
++}
++
++static void mt7620_hw_init(struct mt7620_gsw *gsw, struct device_node *np)
++{
++	u32 is_BGA = (rt_sysc_r32(0x0c) >> 16) & 1;
++
++	rt_sysc_w32(rt_sysc_r32(SYSC_REG_CFG1) | BIT(8), SYSC_REG_CFG1);
++	mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_CKGCR) & ~(0x3 << 4), GSW_REG_CKGCR);
++
++	if (of_property_read_bool(np, "mediatek,mt7530")) {
++		u32 val;
++
++		/* turn off ephy and set phy base addr to 12 */
++		mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) |
++			(0x1f << 24) | (0xc << 16),
++			GSW_REG_GPC1);
++
++		/* set MT7530 central align */
++		val = mt7530_mdio_r32(gsw, 0x7830);
++		val &= ~BIT(0);
++		val |= BIT(1);
++		mt7530_mdio_w32(gsw, 0x7830, val);
++
++		val = mt7530_mdio_r32(gsw, 0x7a40);
++		val &= ~BIT(30);
++		mt7530_mdio_w32(gsw, 0x7a40, val);
++
++		mt7530_mdio_w32(gsw, 0x7a78, 0x855);
++	} else {
++		/* global page 4 */
++		_mt7620_mii_write(gsw, 1, 31, 0x4000);
++
++		_mt7620_mii_write(gsw, 1, 17, 0x7444);
++		if (is_BGA)
++			_mt7620_mii_write(gsw, 1, 19, 0x0114);
++		else
++			_mt7620_mii_write(gsw, 1, 19, 0x0117);
++
++		_mt7620_mii_write(gsw, 1, 22, 0x10cf);
++		_mt7620_mii_write(gsw, 1, 25, 0x6212);
++		_mt7620_mii_write(gsw, 1, 26, 0x0777);
++		_mt7620_mii_write(gsw, 1, 29, 0x4000);
++		_mt7620_mii_write(gsw, 1, 28, 0xc077);
++		_mt7620_mii_write(gsw, 1, 24, 0x0000);
++
++		/* global page 3 */
++		_mt7620_mii_write(gsw, 1, 31, 0x3000);
++		_mt7620_mii_write(gsw, 1, 17, 0x4838);
++
++		/* global page 2 */
++		_mt7620_mii_write(gsw, 1, 31, 0x2000);
++		if (is_BGA) {
++			_mt7620_mii_write(gsw, 1, 21, 0x0515);
++			_mt7620_mii_write(gsw, 1, 22, 0x0053);
++			_mt7620_mii_write(gsw, 1, 23, 0x00bf);
++			_mt7620_mii_write(gsw, 1, 24, 0x0aaf);
++			_mt7620_mii_write(gsw, 1, 25, 0x0fad);
++			_mt7620_mii_write(gsw, 1, 26, 0x0fc1);
++		} else {
++			_mt7620_mii_write(gsw, 1, 21, 0x0517);
++			_mt7620_mii_write(gsw, 1, 22, 0x0fd2);
++			_mt7620_mii_write(gsw, 1, 23, 0x00bf);
++			_mt7620_mii_write(gsw, 1, 24, 0x0aab);
++			_mt7620_mii_write(gsw, 1, 25, 0x00ae);
++			_mt7620_mii_write(gsw, 1, 26, 0x0fff);
++		}
++		/* global page 1 */
++		_mt7620_mii_write(gsw, 1, 31, 0x1000);
++		_mt7620_mii_write(gsw, 1, 17, 0xe7f8);
++	}
++
++	/* global page 0 */
++	_mt7620_mii_write(gsw, 1, 31, 0x8000);
++	_mt7620_mii_write(gsw, 0, 30, 0xa000);
++	_mt7620_mii_write(gsw, 1, 30, 0xa000);
++	_mt7620_mii_write(gsw, 2, 30, 0xa000);
++	_mt7620_mii_write(gsw, 3, 30, 0xa000);
++
++	_mt7620_mii_write(gsw, 0, 4, 0x05e1);
++	_mt7620_mii_write(gsw, 1, 4, 0x05e1);
++	_mt7620_mii_write(gsw, 2, 4, 0x05e1);
++	_mt7620_mii_write(gsw, 3, 4, 0x05e1);
++
++	/* global page 2 */
++	_mt7620_mii_write(gsw, 1, 31, 0xa000);
++	_mt7620_mii_write(gsw, 0, 16, 0x1111);
++	_mt7620_mii_write(gsw, 1, 16, 0x1010);
++	_mt7620_mii_write(gsw, 2, 16, 0x1515);
++	_mt7620_mii_write(gsw, 3, 16, 0x0f0f);
++
++	/* CPU Port6 Force Link 1G, FC ON */
++	mtk_switch_w32(gsw, 0x5e33b, GSW_REG_PORT_PMCR(6));
++
++	/* Set Port 6 as CPU Port */
++	mtk_switch_w32(gsw, 0x7f7f7fe0, 0x0010);
++
++	/* setup port 4 */
++	if (gsw->port4 == PORT4_EPHY) {
++		u32 val = rt_sysc_r32(SYSC_REG_CFG1);
++
++		val |= 3 << 14;
++		rt_sysc_w32(val, SYSC_REG_CFG1);
++		_mt7620_mii_write(gsw, 4, 30, 0xa000);
++		_mt7620_mii_write(gsw, 4, 4, 0x05e1);
++		_mt7620_mii_write(gsw, 4, 16, 0x1313);
++		pr_info("gsw: setting port4 to ephy mode\n");
++	}
++}
++
++static const struct of_device_id mediatek_gsw_match[] = {
++	{ .compatible = "mediatek,mt7620-gsw" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mediatek_gsw_match);
++
++int mtk_gsw_init(struct fe_priv *priv)
++{
++	struct device_node *np = priv->switch_np;
++	struct platform_device *pdev = of_find_device_by_node(np);
++	struct mt7620_gsw *gsw;
++
++	if (!pdev)
++		return -ENODEV;
++
++	if (!of_device_is_compatible(np, mediatek_gsw_match->compatible))
++		return -EINVAL;
++
++	gsw = platform_get_drvdata(pdev);
++	priv->soc->swpriv = gsw;
++
++	mt7620_hw_init(gsw, np);
++
++	if (gsw->irq) {
++		request_irq(gsw->irq, gsw_interrupt_mt7620, 0,
++			    "gsw", priv);
++		mtk_switch_w32(gsw, ~PORT_IRQ_ST_CHG, GSW_REG_IMR);
++	}
++
++	return 0;
++}
++
++static int mt7620_gsw_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	const char *port4 = NULL;
++	struct mt7620_gsw *gsw;
++	struct device_node *np = pdev->dev.of_node;
++
++	gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL);
++	if (!gsw)
++		return -ENOMEM;
++
++	gsw->base = devm_ioremap_resource(&pdev->dev, res);
++	if (!gsw->base)
++		return -EADDRNOTAVAIL;
++
++	gsw->dev = &pdev->dev;
++
++	of_property_read_string(np, "mediatek,port4", &port4);
++	if (port4 && !strcmp(port4, "ephy"))
++		gsw->port4 = PORT4_EPHY;
++	else if (port4 && !strcmp(port4, "gmac"))
++		gsw->port4 = PORT4_EXT;
++	else
++		gsw->port4 = PORT4_EPHY;
++
++	gsw->irq = irq_of_parse_and_map(np, 0);
++
++	platform_set_drvdata(pdev, gsw);
++
++	return 0;
++}
++
++static int mt7620_gsw_remove(struct platform_device *pdev)
++{
++	platform_set_drvdata(pdev, NULL);
++
++	return 0;
++}
++
++static struct platform_driver gsw_driver = {
++	.probe = mt7620_gsw_probe,
++	.remove = mt7620_gsw_remove,
++	.driver = {
++		.name = "mt7620-gsw",
++		.owner = THIS_MODULE,
++		.of_match_table = mediatek_gsw_match,
++	},
++};
++
++module_platform_driver(gsw_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_DESCRIPTION("GBit switch driver for Mediatek MT7620 SoC");
++MODULE_VERSION(MTK_FE_DRV_VERSION);
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/gsw_mt7620.h
+@@ -0,0 +1,117 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef _RALINK_GSW_MT7620_H__
++#define _RALINK_GSW_MT7620_H__
++
++#define GSW_REG_PHY_TIMEOUT	(5 * HZ)
++
++#ifdef CONFIG_SOC_MT7621
++#define MT7620A_GSW_REG_PIAC	0x0004
++#else
++#define MT7620A_GSW_REG_PIAC	0x7004
++#endif
++
++#define GSW_NUM_VLANS		16
++#define GSW_NUM_VIDS		4096
++#define GSW_NUM_PORTS		7
++#define GSW_PORT6		6
++
++#define GSW_MDIO_ACCESS		BIT(31)
++#define GSW_MDIO_READ		BIT(19)
++#define GSW_MDIO_WRITE		BIT(18)
++#define GSW_MDIO_START		BIT(16)
++#define GSW_MDIO_ADDR_SHIFT	20
++#define GSW_MDIO_REG_SHIFT	25
++
++#define GSW_REG_PORT_PMCR(x)	(0x3000 + (x * 0x100))
++#define GSW_REG_PORT_STATUS(x)	(0x3008 + (x * 0x100))
++#define GSW_REG_SMACCR0		0x3fE4
++#define GSW_REG_SMACCR1		0x3fE8
++#define GSW_REG_CKGCR		0x3ff0
++
++#define GSW_REG_IMR		0x7008
++#define GSW_REG_ISR		0x700c
++#define GSW_REG_GPC1		0x7014
++
++#define SYSC_REG_CHIP_REV_ID	0x0c
++#define SYSC_REG_CFG1		0x14
++#define RST_CTRL_MCM		BIT(2)
++#define SYSC_PAD_RGMII2_MDIO	0x58
++#define SYSC_GPIO_MODE		0x60
++
++#define PORT_IRQ_ST_CHG		0x7f
++
++#ifdef CONFIG_SOC_MT7621
++#define ESW_PHY_POLLING		0x0000
++#else
++#define ESW_PHY_POLLING		0x7000
++#endif
++
++#define	PMCR_IPG		BIT(18)
++#define	PMCR_MAC_MODE		BIT(16)
++#define	PMCR_FORCE		BIT(15)
++#define	PMCR_TX_EN		BIT(14)
++#define	PMCR_RX_EN		BIT(13)
++#define	PMCR_BACKOFF		BIT(9)
++#define	PMCR_BACKPRES		BIT(8)
++#define	PMCR_RX_FC		BIT(5)
++#define	PMCR_TX_FC		BIT(4)
++#define	PMCR_SPEED(_x)		(_x << 2)
++#define	PMCR_DUPLEX		BIT(1)
++#define	PMCR_LINK		BIT(0)
++
++#define PHY_AN_EN		BIT(31)
++#define PHY_PRE_EN		BIT(30)
++#define PMY_MDC_CONF(_x)	((_x & 0x3f) << 24)
++
++enum {
++	/* Global attributes. */
++	GSW_ATTR_ENABLE_VLAN,
++	/* Port attributes. */
++	GSW_ATTR_PORT_UNTAG,
++};
++
++enum {
++	PORT4_EPHY = 0,
++	PORT4_EXT,
++};
++
++struct mt7620_gsw {
++	struct device		*dev;
++	void __iomem		*base;
++	int			irq;
++	int			port4;
++	unsigned long int	autopoll;
++};
++
++void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned reg);
++u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned reg);
++int mtk_gsw_init(struct fe_priv *priv);
++
++int mt7620_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val);
++int mt7620_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg);
++void mt7620_mdio_link_adjust(struct fe_priv *priv, int port);
++int mt7620_has_carrier(struct fe_priv *priv);
++void mt7620_print_link_state(struct fe_priv *priv, int port, int link,
++			     int speed, int duplex);
++
++void mt7530_mdio_w32(struct mt7620_gsw *gsw, u32 reg, u32 val);
++u32 mt7530_mdio_r32(struct mt7620_gsw *gsw, u32 reg);
++
++u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
++			     u32 phy_register, u32 write_data);
++u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg);
++
++#endif

target/linux/ramips/patches-4.4/0504-net-next-mediatek-add-switch-driver-for-mt7621.patch

@@ -0,0 +1,301 @@
+From 9fc19d5f7354709298dcb15b3a4c7cd9a18acebf Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:24:46 +0100
+Subject: [PATCH 504/513] net-next: mediatek: add switch driver for mt7621
+
+This driver is very basic and only provides basic init and irq support.
+Switchdev support for this device will follow.
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/gsw_mt7621.c |  284 ++++++++++++++++++++++++++++
+ 1 file changed, 284 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/gsw_mt7621.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/gsw_mt7621.c
+@@ -0,0 +1,284 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/platform_device.h>
++#include <linux/of_device.h>
++#include <linux/of_irq.h>
++
++#include <ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "gsw_mt7620.h"
++
++void mtk_switch_w32(struct mt7620_gsw *gsw, u32 val, unsigned reg)
++{
++	iowrite32(val, gsw->base + reg);
++}
++
++u32 mtk_switch_r32(struct mt7620_gsw *gsw, unsigned reg)
++{
++	return ioread32(gsw->base + reg);
++}
++
++static irqreturn_t gsw_interrupt_mt7621(int irq, void *_priv)
++{
++	struct fe_priv *priv = (struct fe_priv *)_priv;
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++	u32 reg, i;
++
++	reg = mt7530_mdio_r32(gsw, 0x700c);
++
++	for (i = 0; i < 5; i++)
++		if (reg & BIT(i)) {
++			unsigned int link;
++
++			link = mt7530_mdio_r32(gsw,
++					       0x3008 + (i * 0x100)) & 0x1;
++
++			if (link != priv->link[i]) {
++				priv->link[i] = link;
++				if (link)
++					netdev_info(priv->netdev,
++						    "port %d link up\n", i);
++				else
++					netdev_info(priv->netdev,
++						    "port %d link down\n", i);
++			}
++		}
++
++	mt7530_mdio_w32(gsw, 0x700c, 0x1f);
++
++	return IRQ_HANDLED;
++}
++
++static void mt7621_hw_init(struct mt7620_gsw *gsw, struct device_node *np)
++{
++	u32 i;
++	u32 val;
++
++	/* wardware reset the switch */
++	fe_reset(RST_CTRL_MCM);
++	mdelay(10);
++
++	/* reduce RGMII2 PAD driving strength */
++	rt_sysc_m32(3 << 4, 0, SYSC_PAD_RGMII2_MDIO);
++
++	/* gpio mux - RGMII1=Normal mode */
++	rt_sysc_m32(BIT(14), 0, SYSC_GPIO_MODE);
++
++	/* set GMAC1 RGMII mode */
++	rt_sysc_m32(3 << 12, 0, SYSC_REG_CFG1);
++
++	/* enable MDIO to control MT7530 */
++	rt_sysc_m32(3 << 12, 0, SYSC_GPIO_MODE);
++
++	/* turn off all PHYs */
++	for (i = 0; i <= 4; i++) {
++		val = _mt7620_mii_read(gsw, i, 0x0);
++		val |= BIT(11);
++		_mt7620_mii_write(gsw, i, 0x0, val);
++	}
++
++	/* reset the switch */
++	mt7530_mdio_w32(gsw, 0x7000, 0x3);
++	usleep_range(10, 20);
++
++	if ((rt_sysc_r32(SYSC_REG_CHIP_REV_ID) & 0xFFFF) == 0x0101) {
++		/* (GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536) */
++		mtk_switch_w32(gsw, 0x2105e30b, 0x100);
++		mt7530_mdio_w32(gsw, 0x3600, 0x5e30b);
++	} else {
++		/* (GE1, Force 1000M/FD, FC ON, MAX_RX_LENGTH 1536) */
++		mtk_switch_w32(gsw, 0x2105e33b, 0x100);
++		mt7530_mdio_w32(gsw, 0x3600, 0x5e33b);
++	}
++
++	/* (GE2, Link down) */
++	mtk_switch_w32(gsw, 0x8000, 0x200);
++
++	/* Enable Port 6, P5 as GMAC5, P5 disable */
++	val = mt7530_mdio_r32(gsw, 0x7804);
++	val &= ~BIT(8);
++	val |= BIT(6) | BIT(13) | BIT(16);
++	mt7530_mdio_w32(gsw, 0x7804, val);
++
++	val = rt_sysc_r32(0x10);
++	val = (val >> 6) & 0x7;
++	if (val >= 6) {
++		/* 25Mhz Xtal - do nothing */
++	} else if (val >= 3) {
++		/* 40Mhz */
++
++		/* disable MT7530 core clock */
++		_mt7620_mii_write(gsw, 0, 13, 0x1f);
++		_mt7620_mii_write(gsw, 0, 14, 0x410);
++		_mt7620_mii_write(gsw, 0, 13, 0x401f);
++		_mt7620_mii_write(gsw, 0, 14, 0x0);
++
++		/* disable MT7530 PLL */
++		_mt7620_mii_write(gsw, 0, 13, 0x1f);
++		_mt7620_mii_write(gsw, 0, 14, 0x40d);
++		_mt7620_mii_write(gsw, 0, 13, 0x401f);
++		_mt7620_mii_write(gsw, 0, 14, 0x2020);
++
++		/* for MT7530 core clock = 500Mhz */
++		_mt7620_mii_write(gsw, 0, 13, 0x1f);
++		_mt7620_mii_write(gsw, 0, 14, 0x40e);
++		_mt7620_mii_write(gsw, 0, 13, 0x401f);
++		_mt7620_mii_write(gsw, 0, 14, 0x119);
++
++		/* enable MT7530 PLL */
++		_mt7620_mii_write(gsw, 0, 13, 0x1f);
++		_mt7620_mii_write(gsw, 0, 14, 0x40d);
++		_mt7620_mii_write(gsw, 0, 13, 0x401f);
++		_mt7620_mii_write(gsw, 0, 14, 0x2820);
++
++		usleep_range(20, 40);
++
++		/* enable MT7530 core clock */
++		_mt7620_mii_write(gsw, 0, 13, 0x1f);
++		_mt7620_mii_write(gsw, 0, 14, 0x410);
++		_mt7620_mii_write(gsw, 0, 13, 0x401f);
++	} else {
++		/* 20Mhz Xtal - TODO */
++	}
++
++	/* RGMII */
++	_mt7620_mii_write(gsw, 0, 14, 0x1);
++
++	/* set MT7530 central align */
++	val = mt7530_mdio_r32(gsw, 0x7830);
++	val &= ~BIT(0);
++	val |= BIT(1);
++	mt7530_mdio_w32(gsw, 0x7830, val);
++	val = mt7530_mdio_r32(gsw, 0x7a40);
++	val &= ~BIT(30);
++	mt7530_mdio_w32(gsw, 0x7a40, val);
++	mt7530_mdio_w32(gsw, 0x7a78, 0x855);
++
++	/* delay setting for 10/1000M */
++	mt7530_mdio_w32(gsw, 0x7b00, 0x102);
++	mt7530_mdio_w32(gsw, 0x7b04, 0x14);
++
++	/* lower Tx Driving*/
++	mt7530_mdio_w32(gsw, 0x7a54, 0x44);
++	mt7530_mdio_w32(gsw, 0x7a5c, 0x44);
++	mt7530_mdio_w32(gsw, 0x7a64, 0x44);
++	mt7530_mdio_w32(gsw, 0x7a6c, 0x44);
++	mt7530_mdio_w32(gsw, 0x7a74, 0x44);
++	mt7530_mdio_w32(gsw, 0x7a7c, 0x44);
++
++	/* turn on all PHYs */
++	for (i = 0; i <= 4; i++) {
++		val = _mt7620_mii_read(gsw, i, 0);
++		val &= ~BIT(11);
++		_mt7620_mii_write(gsw, i, 0, val);
++	}
++
++	/* enable irq */
++	val = mt7530_mdio_r32(gsw, 0x7808);
++	val |= 3 << 16;
++	mt7530_mdio_w32(gsw, 0x7808, val);
++}
++
++static const struct of_device_id mediatek_gsw_match[] = {
++	{ .compatible = "mediatek,mt7621-gsw" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, mediatek_gsw_match);
++
++int mtk_gsw_init(struct fe_priv *priv)
++{
++	struct device_node *np = priv->switch_np;
++	struct platform_device *pdev = of_find_device_by_node(np);
++	struct mt7620_gsw *gsw;
++
++	if (!pdev)
++		return -ENODEV;
++
++	if (!of_device_is_compatible(np, mediatek_gsw_match->compatible))
++		return -EINVAL;
++
++	gsw = platform_get_drvdata(pdev);
++	priv->soc->swpriv = gsw;
++
++	mt7621_hw_init(gsw, np);
++
++	if (gsw->irq) {
++		request_irq(gsw->irq, gsw_interrupt_mt7621, 0,
++			    "gsw", priv);
++		mt7530_mdio_w32(gsw, 0x7008, 0x1f);
++	}
++
++	return 0;
++}
++
++static int mt7621_gsw_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	const char *port4 = NULL;
++	struct mt7620_gsw *gsw;
++	struct device_node *np;
++
++	gsw = devm_kzalloc(&pdev->dev, sizeof(struct mt7620_gsw), GFP_KERNEL);
++	if (!gsw)
++		return -ENOMEM;
++
++	gsw->base = devm_ioremap_resource(&pdev->dev, res);
++	if (!gsw->base)
++		return -EADDRNOTAVAIL;
++
++	gsw->dev = &pdev->dev;
++
++	of_property_read_string(np, "mediatek,port4", &port4);
++	if (port4 && !strcmp(port4, "ephy"))
++		gsw->port4 = PORT4_EPHY;
++	else if (port4 && !strcmp(port4, "gmac"))
++		gsw->port4 = PORT4_EXT;
++	else
++		gsw->port4 = PORT4_EPHY;
++
++	gsw->irq = irq_of_parse_and_map(np, 0);
++
++	platform_set_drvdata(pdev, gsw);
++
++	return 0;
++}
++
++static int mt7621_gsw_remove(struct platform_device *pdev)
++{
++	platform_set_drvdata(pdev, NULL);
++
++	return 0;
++}
++
++static struct platform_driver gsw_driver = {
++	.probe = mt7621_gsw_probe,
++	.remove = mt7621_gsw_remove,
++	.driver = {
++		.name = "mt7621-gsw",
++		.owner = THIS_MODULE,
++		.of_match_table = mediatek_gsw_match,
++	},
++};
++
++module_platform_driver(gsw_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_DESCRIPTION("GBit switch driver for Mediatek MT7621 SoC");
++MODULE_VERSION(MTK_FE_DRV_VERSION);

target/linux/ramips/patches-4.4/0505-net-next-mediatek-add-support-for-rt2880.patch

@@ -0,0 +1,351 @@
+From f8c8f4bd2a13e0cc060c93812377373d436f7f02 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Wed, 18 Nov 2015 03:13:05 +0100
+Subject: [PATCH 505/513] net-next: mediatek: add support for rt2880
+
+rt2880 is the oldest SoC with this core. It has a single gBit port that will
+normally be attached to an external phy of switch. The patch also adds the
+code required to drive the mdio bus.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mdio_rt2880.c |  222 +++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/mdio_rt2880.h |   23 +++
+ drivers/net/ethernet/mediatek/soc_rt2880.c  |   76 +++++++++
+ 3 files changed, 321 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/mdio_rt2880.c
+ create mode 100644 drivers/net/ethernet/mediatek/mdio_rt2880.h
+ create mode 100644 drivers/net/ethernet/mediatek/soc_rt2880.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio_rt2880.c
+@@ -0,0 +1,222 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/of_net.h>
++#include <linux/of_mdio.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++#include "mdio.h"
++
++#define FE_MDIO_RETRY	1000
++
++static unsigned char *rt2880_speed_str(struct fe_priv *priv)
++{
++	switch (priv->phy->speed[0]) {
++	case SPEED_1000:
++		return "1000";
++	case SPEED_100:
++		return "100";
++	case SPEED_10:
++		return "10";
++	}
++
++	return "?";
++}
++
++void rt2880_mdio_link_adjust(struct fe_priv *priv, int port)
++{
++	u32 mdio_cfg;
++
++	if (!priv->link[0]) {
++		netif_carrier_off(priv->netdev);
++		netdev_info(priv->netdev, "link down\n");
++		return;
++	}
++
++	mdio_cfg = FE_MDIO_CFG_TX_CLK_SKEW_200 |
++		   FE_MDIO_CFG_RX_CLK_SKEW_200 |
++		   FE_MDIO_CFG_GP1_FRC_EN;
++
++	if (priv->phy->duplex[0] == DUPLEX_FULL)
++		mdio_cfg |= FE_MDIO_CFG_GP1_DUPLEX;
++
++	if (priv->phy->tx_fc[0])
++		mdio_cfg |= FE_MDIO_CFG_GP1_FC_TX;
++
++	if (priv->phy->rx_fc[0])
++		mdio_cfg |= FE_MDIO_CFG_GP1_FC_RX;
++
++	switch (priv->phy->speed[0]) {
++	case SPEED_10:
++		mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_10;
++		break;
++	case SPEED_100:
++		mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_100;
++		break;
++	case SPEED_1000:
++		mdio_cfg |= FE_MDIO_CFG_GP1_SPEED_1000;
++		break;
++	default:
++		BUG();
++	}
++
++	fe_w32(mdio_cfg, FE_MDIO_CFG);
++
++	netif_carrier_on(priv->netdev);
++	netdev_info(priv->netdev, "link up (%sMbps/%s duplex)\n",
++		    rt2880_speed_str(priv),
++		    (priv->phy->duplex[0] == DUPLEX_FULL) ? "Full" : "Half");
++}
++
++static int rt2880_mdio_wait_ready(struct fe_priv *priv)
++{
++	int retries;
++
++	retries = FE_MDIO_RETRY;
++	while (1) {
++		u32 t;
++
++		t = fe_r32(FE_MDIO_ACCESS);
++		if ((t & BIT(31)) == 0)
++			return 0;
++
++		if (retries-- == 0)
++			break;
++
++		udelay(1);
++	}
++
++	dev_err(priv->device, "MDIO operation timed out\n");
++	return -ETIMEDOUT;
++}
++
++int rt2880_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
++{
++	struct fe_priv *priv = bus->priv;
++	int err;
++	u32 t;
++
++	err = rt2880_mdio_wait_ready(priv);
++	if (err)
++		return 0xffff;
++
++	t = (phy_addr << 24) | (phy_reg << 16);
++	fe_w32(t, FE_MDIO_ACCESS);
++	t |= BIT(31);
++	fe_w32(t, FE_MDIO_ACCESS);
++
++	err = rt2880_mdio_wait_ready(priv);
++	if (err)
++		return 0xffff;
++
++	pr_debug("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
++		 phy_addr, phy_reg, fe_r32(FE_MDIO_ACCESS) & 0xffff);
++
++	return fe_r32(FE_MDIO_ACCESS) & 0xffff;
++}
++
++int rt2880_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val)
++{
++	struct fe_priv *priv = bus->priv;
++	int err;
++	u32 t;
++
++	pr_debug("%s: addr=%04x, reg=%04x, value=%04x\n", __func__,
++		 phy_addr, phy_reg, fe_r32(FE_MDIO_ACCESS) & 0xffff);
++
++	err = rt2880_mdio_wait_ready(priv);
++	if (err)
++		return err;
++
++	t = (1 << 30) | (phy_addr << 24) | (phy_reg << 16) | val;
++	fe_w32(t, FE_MDIO_ACCESS);
++	t |= BIT(31);
++	fe_w32(t, FE_MDIO_ACCESS);
++
++	return rt2880_mdio_wait_ready(priv);
++}
++
++void rt2880_port_init(struct fe_priv *priv, struct device_node *np)
++{
++	const __be32 *id = of_get_property(np, "reg", NULL);
++	const __be32 *link;
++	int size;
++	int phy_mode;
++
++	if (!id || (be32_to_cpu(*id) != 0)) {
++		pr_err("%s: invalid port id\n", np->name);
++		return;
++	}
++
++	priv->phy->phy_fixed[0] = of_get_property(np,
++						  "mediatek,fixed-link", &size);
++	if (priv->phy->phy_fixed[0] &&
++	    (size != (4 * sizeof(*priv->phy->phy_fixed[0])))) {
++		pr_err("%s: invalid fixed link property\n", np->name);
++		priv->phy->phy_fixed[0] = NULL;
++		return;
++	}
++
++	phy_mode = of_get_phy_mode(np);
++	switch (phy_mode) {
++	case PHY_INTERFACE_MODE_RGMII:
++		break;
++	case PHY_INTERFACE_MODE_MII:
++		break;
++	case PHY_INTERFACE_MODE_RMII:
++		break;
++	default:
++		if (!priv->phy->phy_fixed[0])
++			dev_err(priv->device, "port %d - invalid phy mode\n",
++				priv->phy->speed[0]);
++		break;
++	}
++
++	priv->phy->phy_node[0] = of_parse_phandle(np, "phy-handle", 0);
++	if (!priv->phy->phy_node[0] && !priv->phy->phy_fixed[0])
++		return;
++
++	if (priv->phy->phy_fixed[0]) {
++		link = priv->phy->phy_fixed[0];
++		priv->phy->speed[0] = be32_to_cpup(link++);
++		priv->phy->duplex[0] = be32_to_cpup(link++);
++		priv->phy->tx_fc[0] = be32_to_cpup(link++);
++		priv->phy->rx_fc[0] = be32_to_cpup(link++);
++
++		priv->link[0] = 1;
++		switch (priv->phy->speed[0]) {
++		case SPEED_10:
++			break;
++		case SPEED_100:
++			break;
++		case SPEED_1000:
++			break;
++		default:
++			dev_err(priv->device, "invalid link speed: %d\n",
++				priv->phy->speed[0]);
++			priv->phy->phy_fixed[0] = 0;
++			return;
++		}
++		dev_info(priv->device, "using fixed link parameters\n");
++		rt2880_mdio_link_adjust(priv, 0);
++		return;
++	}
++
++	if (priv->phy->phy_node[0] && priv->mii_bus->phy_map[0])
++		fe_connect_phy_node(priv, priv->phy->phy_node[0]);
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio_rt2880.h
+@@ -0,0 +1,23 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#ifndef _RALINK_MDIO_RT2880_H__
++#define _RALINK_MDIO_RT2880_H__
++
++void rt2880_mdio_link_adjust(struct fe_priv *priv, int port);
++int rt2880_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg);
++int rt2880_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val);
++void rt2880_port_init(struct fe_priv *priv, struct device_node *np);
++
++#endif
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_rt2880.c
+@@ -0,0 +1,76 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++
++#define RT2880_RESET_FE			BIT(18)
++
++static void rt2880_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
++		FE_FLAG_JUMBO_FRAME | FE_FLAG_CALIBRATE_CLK;
++	netdev->hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_TX;
++	/* this should work according to the datasheet but actually does not*/
++	/* netdev->hw_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM; */
++}
++
++void rt2880_fe_reset(void)
++{
++	fe_reset(RT2880_RESET_FE);
++}
++
++static int rt2880_fwd_config(struct fe_priv *priv)
++{
++	int ret;
++
++	ret = fe_set_clock_cycle(priv);
++	if (ret)
++		return ret;
++
++	fe_fwd_config(priv);
++	fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
++	fe_csum_config(priv);
++
++	return ret;
++}
++
++struct fe_soc_data rt2880_data = {
++	.init_data = rt2880_init_data,
++	.reset_fe = rt2880_fe_reset,
++	.fwd_config = rt2880_fwd_config,
++	.pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
++	.checksum_bit = RX_DMA_L4VALID,
++	.rx_int = FE_RX_DONE_INT,
++	.tx_int = FE_TX_DONE_INT,
++	.status_int = FE_CNT_GDM_AF,
++	.mdio_read = rt2880_mdio_read,
++	.mdio_write = rt2880_mdio_write,
++	.mdio_adjust_link = rt2880_mdio_link_adjust,
++	.port_init = rt2880_port_init,
++};
++
++const struct of_device_id of_fe_match[] = {
++	{ .compatible = "ralink,rt2880-eth", .data = &rt2880_data },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);

target/linux/ramips/patches-4.4/0506-net-next-mediatek-add-support-for-rt3050.patch

@@ -0,0 +1,239 @@
+From a3555658ce5dd97df3dc225289b92800da9d38ba Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:28:51 +0100
+Subject: [PATCH 506/513] net-next: mediatek: add support for rt3050
+
+Add support for SoCs from the rt3050 family. This include rt3050, rt3052,
+rt3352 and rt5350. These all have a builtin 5 port 100mbit switch. This patch
+includes rudimentary code to power up the switch. There are a lot of magic
+values that get written to the switch and the internal phys. These values
+come straight from the SDK driver and we do not know the meaning of most of
+them.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/esw_rt3050.c |   18 +---
+ drivers/net/ethernet/mediatek/soc_rt3050.c |  158 ++++++++++++++++++++++++++++
+ 2 files changed, 159 insertions(+), 17 deletions(-)
+ create mode 100644 drivers/net/ethernet/mediatek/soc_rt3050.c
+
+--- a/drivers/net/ethernet/mediatek/esw_rt3050.c
++++ b/drivers/net/ethernet/mediatek/esw_rt3050.c
+@@ -14,27 +14,11 @@
+ 
+ #include <linux/module.h>
+ #include <linux/kernel.h>
+-#include <linux/types.h>
+-#include <linux/dma-mapping.h>
+-#include <linux/init.h>
+-#include <linux/skbuff.h>
+-#include <linux/etherdevice.h>
+-#include <linux/ethtool.h>
+ #include <linux/platform_device.h>
+-#include <linux/of_device.h>
+-#include <linux/clk.h>
+-#include <linux/of_net.h>
+-#include <linux/of_mdio.h>
+-
+ #include <asm/mach-ralink/ralink_regs.h>
+ 
+ #include "mtk_eth_soc.h"
+ 
+-#include <linux/ioport.h>
+-#include <linux/mii.h>
+-
+-#include <ralink_regs.h>
+-
+ /* HW limitations for this switch:
+  * - No large frame support (PKT_MAX_LEN at most 1536)
+  * - Can't have untagged vlan and tagged vlan on one port at the same time,
+@@ -559,7 +543,7 @@ static irqreturn_t esw_interrupt(int irq
+ 
+ static int esw_probe(struct platform_device *pdev)
+ {
+-	struct resource *res = platform_get_resource(p, IORESOURCE_MEM, 0);
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	struct device_node *np = pdev->dev.of_node;
+ 	const __be32 *port_map, *reg_init;
+ 	struct rt305x_esw *esw;
+@@ -629,12 +613,9 @@ static struct platform_driver esw_driver
+ 	},
+ };
+ 
+-int __init mtk_switch_init(void)
+-{
+-	return platform_driver_register(&esw_driver);
+-}
++module_platform_driver(esw_driver);
+ 
+-void mtk_switch_exit(void)
+-{
+-	platform_driver_unregister(&esw_driver);
+-}
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("John Crispin <[email protected]>");
++MODULE_DESCRIPTION("Switch driver for RT305X SoC");
++MODULE_VERSION(MTK_FE_DRV_VERSION);
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_rt3050.c
+@@ -0,0 +1,158 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++
++#define RT305X_RESET_FE         BIT(21)
++#define RT305X_RESET_ESW        BIT(23)
++
++static const u16 rt5350_reg_table[FE_REG_COUNT] = {
++	[FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
++	[FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
++	[FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
++	[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
++	[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
++	[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
++	[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
++	[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
++	[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
++	[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
++	[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
++	[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
++	[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
++	[FE_REG_FE_RST_GL] = 0,
++	[FE_REG_FE_DMA_VID_BASE] = 0,
++};
++
++static void rt305x_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
++		FE_FLAG_CALIBRATE_CLK | FE_FLAG_HAS_SWITCH;
++	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
++		NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
++}
++
++static int rt3050_fwd_config(struct fe_priv *priv)
++{
++	int ret;
++
++	if (ralink_soc != RT305X_SOC_RT3052) {
++		ret = fe_set_clock_cycle(priv);
++		if (ret)
++			return ret;
++	}
++
++	fe_fwd_config(priv);
++	if (ralink_soc != RT305X_SOC_RT3352)
++		fe_w32(FE_PSE_FQFC_CFG_INIT, FE_PSE_FQ_CFG);
++	fe_csum_config(priv);
++
++	return 0;
++}
++
++static void rt305x_fe_reset(void)
++{
++	fe_reset(RT305X_RESET_FE);
++}
++
++static void rt5350_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_HAS_SWITCH;
++	netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM;
++}
++
++static void rt5350_set_mac(struct fe_priv *priv, unsigned char *mac)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++	fe_w32((mac[0] << 8) | mac[1], RT5350_SDM_MAC_ADRH);
++	fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
++	       RT5350_SDM_MAC_ADRL);
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++}
++
++static void rt5350_rxcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(RT5350_SDM_CFG) | (RT5350_SDM_ICS_EN |
++				RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
++				RT5350_SDM_CFG);
++	else
++		fe_w32(fe_r32(RT5350_SDM_CFG) & ~(RT5350_SDM_ICS_EN |
++				RT5350_SDM_TCS_EN | RT5350_SDM_UCS_EN),
++				RT5350_SDM_CFG);
++}
++
++static int rt5350_fwd_config(struct fe_priv *priv)
++{
++	struct net_device *dev = priv_netdev(priv);
++
++	rt5350_rxcsum_config((dev->features & NETIF_F_RXCSUM));
++
++	return 0;
++}
++
++static void rt5350_tx_dma(struct fe_tx_dma *txd)
++{
++	txd->txd4 = 0;
++}
++
++static void rt5350_fe_reset(void)
++{
++	fe_reset(RT305X_RESET_FE | RT305X_RESET_ESW);
++}
++
++static struct fe_soc_data rt3050_data = {
++	.init_data = rt305x_init_data,
++	.reset_fe = rt305x_fe_reset,
++	.fwd_config = rt3050_fwd_config,
++	.pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
++	.checksum_bit = RX_DMA_L4VALID,
++	.rx_int = FE_RX_DONE_INT,
++	.tx_int = FE_TX_DONE_INT,
++	.status_int = FE_CNT_GDM_AF,
++};
++
++static struct fe_soc_data rt5350_data = {
++	.init_data = rt5350_init_data,
++	.reg_table = rt5350_reg_table,
++	.reset_fe = rt5350_fe_reset,
++	.set_mac = rt5350_set_mac,
++	.fwd_config = rt5350_fwd_config,
++	.tx_dma = rt5350_tx_dma,
++	.pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
++	.checksum_bit = RX_DMA_L4VALID,
++	.rx_int = RT5350_RX_DONE_INT,
++	.tx_int = RT5350_TX_DONE_INT,
++};
++
++const struct of_device_id of_fe_match[] = {
++	{ .compatible = "ralink,rt3050-eth", .data = &rt3050_data },
++	{ .compatible = "ralink,rt5350-eth", .data = &rt5350_data },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);

target/linux/ramips/patches-4.4/0507-net-next-mediatek-add-support-for-rt3883.patch

@@ -0,0 +1,94 @@
+From 5ad283c69029a519681ed453e7f7ddf250c10559 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Wed, 18 Nov 2015 03:51:24 +0100
+Subject: [PATCH 507/513] net-next: mediatek: add support for rt3883
+
+Add support for rt3883 and its smaller version rt3662. They both have a single
+gBit port that will normally be attached to an external phy of switch.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/soc_rt3883.c |   75 ++++++++++++++++++++++++++++
+ 1 file changed, 75 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/soc_rt3883.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_rt3883.c
+@@ -0,0 +1,75 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "mdio_rt2880.h"
++
++#define RT3883_RSTCTRL_FE		BIT(21)
++
++static void rt3883_fe_reset(void)
++{
++	fe_reset(RT3883_RSTCTRL_FE);
++}
++
++static int rt3883_fwd_config(struct fe_priv *priv)
++{
++	int ret;
++
++	ret = fe_set_clock_cycle(priv);
++	if (ret)
++		return ret;
++
++	fe_fwd_config(priv);
++	fe_w32(FE_PSE_FQFC_CFG_256Q, FE_PSE_FQ_CFG);
++	fe_csum_config(priv);
++
++	return ret;
++}
++
++static void rt3883_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_PADDING_BUG |
++		FE_FLAG_JUMBO_FRAME | FE_FLAG_CALIBRATE_CLK;
++	netdev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
++		NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;
++}
++
++static struct fe_soc_data rt3883_data = {
++	.init_data = rt3883_init_data,
++	.reset_fe = rt3883_fe_reset,
++	.fwd_config = rt3883_fwd_config,
++	.pdma_glo_cfg = FE_PDMA_SIZE_8DWORDS,
++	.rx_int = FE_RX_DONE_INT,
++	.tx_int = FE_TX_DONE_INT,
++	.status_int = FE_CNT_GDM_AF,
++	.checksum_bit = RX_DMA_L4VALID,
++	.mdio_read = rt2880_mdio_read,
++	.mdio_write = rt2880_mdio_write,
++	.mdio_adjust_link = rt2880_mdio_link_adjust,
++	.port_init = rt2880_port_init,
++};
++
++const struct of_device_id of_fe_match[] = {
++	{ .compatible = "ralink,rt3883-eth", .data = &rt3883_data },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);

target/linux/ramips/patches-4.4/0508-net-next-mediatek-add-support-for-mt7620.patch

@@ -0,0 +1,519 @@
+From 1efca7b539a91c49ab1d6484ec3a69c48fa6062b Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:25:35 +0100
+Subject: [PATCH 508/513] net-next: mediatek: add support for mt7620
+
+Add support for SoCs from the mt7620 family. This include mt7620 and mt7621.
+These all have one dedicated external gbit port and a builtin 5 port 100mbit
+switch. Additionally one of the 5 switch ports can be changed to become an
+additional gbit port that we can attach a phy to. This patch includes
+rudimentary code to power up the switch. There are a lot of magic values
+that get written to the switch and the internal phys. These values come
+straight from the SDK driver.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mdio_mt7620.c |  156 +++++++++++++
+ drivers/net/ethernet/mediatek/soc_mt7620.c  |  334 +++++++++++++++++++++++++++
+ 2 files changed, 490 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/mdio_mt7620.c
+ create mode 100644 drivers/net/ethernet/mediatek/soc_mt7620.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mdio_mt7620.c
+@@ -0,0 +1,156 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/types.h>
++
++#include "mtk_eth_soc.h"
++#include "gsw_mt7620.h"
++#include "mdio.h"
++
++static int mt7620_mii_busy_wait(struct mt7620_gsw *gsw)
++{
++	unsigned long t_start = jiffies;
++
++	while (1) {
++		if (!(mtk_switch_r32(gsw, MT7620A_GSW_REG_PIAC) & GSW_MDIO_ACCESS))
++			return 0;
++		if (time_after(jiffies, t_start + GSW_REG_PHY_TIMEOUT))
++			break;
++	}
++
++	dev_err(gsw->dev, "mdio: MDIO timeout\n");
++	return -1;
++}
++
++u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
++			     u32 phy_register, u32 write_data)
++{
++	if (mt7620_mii_busy_wait(gsw))
++		return -1;
++
++	write_data &= 0xffff;
++
++	mtk_switch_w32(gsw, GSW_MDIO_ACCESS | GSW_MDIO_START | GSW_MDIO_WRITE |
++		(phy_register << GSW_MDIO_REG_SHIFT) |
++		(phy_addr << GSW_MDIO_ADDR_SHIFT) | write_data,
++		MT7620A_GSW_REG_PIAC);
++
++	if (mt7620_mii_busy_wait(gsw))
++		return -1;
++
++	return 0;
++}
++
++u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg)
++{
++	u32 d;
++
++	if (mt7620_mii_busy_wait(gsw))
++		return 0xffff;
++
++	mtk_switch_w32(gsw, GSW_MDIO_ACCESS | GSW_MDIO_START | GSW_MDIO_READ |
++		(phy_reg << GSW_MDIO_REG_SHIFT) |
++		(phy_addr << GSW_MDIO_ADDR_SHIFT),
++		MT7620A_GSW_REG_PIAC);
++
++	if (mt7620_mii_busy_wait(gsw))
++		return 0xffff;
++
++	d = mtk_switch_r32(gsw, MT7620A_GSW_REG_PIAC) & 0xffff;
++
++	return d;
++}
++
++int mt7620_mdio_write(struct mii_bus *bus, int phy_addr, int phy_reg, u16 val)
++{
++	struct fe_priv *priv = bus->priv;
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++
++	return _mt7620_mii_write(gsw, phy_addr, phy_reg, val);
++}
++
++int mt7620_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg)
++{
++	struct fe_priv *priv = bus->priv;
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++
++	return _mt7620_mii_read(gsw, phy_addr, phy_reg);
++}
++
++void mt7530_mdio_w32(struct mt7620_gsw *gsw, u32 reg, u32 val)
++{
++	_mt7620_mii_write(gsw, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
++	_mt7620_mii_write(gsw, 0x1f, (reg >> 2) & 0xf,  val & 0xffff);
++	_mt7620_mii_write(gsw, 0x1f, 0x10, val >> 16);
++}
++
++u32 mt7530_mdio_r32(struct mt7620_gsw *gsw, u32 reg)
++{
++	u16 high, low;
++
++	_mt7620_mii_write(gsw, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
++	low = _mt7620_mii_read(gsw, 0x1f, (reg >> 2) & 0xf);
++	high = _mt7620_mii_read(gsw, 0x1f, 0x10);
++
++	return (high << 16) | (low & 0xffff);
++}
++
++static unsigned char *fe_speed_str(int speed)
++{
++	switch (speed) {
++	case 2:
++	case SPEED_1000:
++		return "1000";
++	case 1:
++	case SPEED_100:
++		return "100";
++	case 0:
++	case SPEED_10:
++		return "10";
++	}
++
++	return "? ";
++}
++
++int mt7620_has_carrier(struct fe_priv *priv)
++{
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++	int i;
++
++	for (i = 0; i < GSW_PORT6; i++)
++		if (mtk_switch_r32(gsw, GSW_REG_PORT_STATUS(i)) & 0x1)
++			return 1;
++	return 0;
++}
++
++
++void mt7620_print_link_state(struct fe_priv *priv, int port, int link,
++			     int speed, int duplex)
++{
++	if (link)
++		netdev_info(priv->netdev, "port %d link up (%sMbps/%s duplex)\n",
++			    port, fe_speed_str(speed),
++			    (duplex) ? "Full" : "Half");
++	else
++		netdev_info(priv->netdev, "port %d link down\n", port);
++}
++
++void mt7620_mdio_link_adjust(struct fe_priv *priv, int port)
++{
++	mt7620_print_link_state(priv, port, priv->link[port],
++				priv->phy->speed[port],
++				(priv->phy->duplex[port] == DUPLEX_FULL));
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_mt7620.c
+@@ -0,0 +1,334 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/if_vlan.h>
++#include <linux/of_net.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include <mt7620.h>
++#include "mtk_eth_soc.h"
++#include "gsw_mt7620.h"
++#include "mt7530.h"
++#include "mdio.h"
++
++#define MT7620A_CDMA_CSG_CFG	0x400
++#define MT7620_DMA_VID		(MT7620A_CDMA_CSG_CFG | 0x30)
++#define MT7621_CDMP_IG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x00)
++#define MT7621_CDMP_EG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x04)
++#define MT7620A_RESET_FE	BIT(21)
++#define MT7621_RESET_FE		BIT(6)
++#define MT7620A_RESET_ESW	BIT(23)
++#define MT7620_L4_VALID		BIT(23)
++#define MT7621_L4_VALID		BIT(24)
++
++#define MT7620_TX_DMA_UDF	BIT(15)
++#define MT7621_TX_DMA_UDF	BIT(19)
++#define TX_DMA_FP_BMAP		((0xff) << 19)
++
++#define CDMA_ICS_EN		BIT(2)
++#define CDMA_UCS_EN		BIT(1)
++#define CDMA_TCS_EN		BIT(0)
++
++#define GDMA_ICS_EN		BIT(22)
++#define GDMA_TCS_EN		BIT(21)
++#define GDMA_UCS_EN		BIT(20)
++
++/* frame engine counters */
++#define MT7620_REG_MIB_OFFSET	0x1000
++#define MT7620_PPE_AC_BCNT0	(MT7620_REG_MIB_OFFSET + 0x00)
++#define MT7620_GDM1_TX_GBCNT	(MT7620_REG_MIB_OFFSET + 0x300)
++#define MT7620_GDM2_TX_GBCNT	(MT7620_GDM1_TX_GBCNT + 0x40)
++
++#define MT7621_REG_MIB_OFFSET	0x2000
++#define MT7621_PPE_AC_BCNT0	(MT7621_REG_MIB_OFFSET + 0x00)
++#define MT7621_GDM1_TX_GBCNT	(MT7621_REG_MIB_OFFSET + 0x400)
++#define MT7621_GDM2_TX_GBCNT	(MT7621_GDM1_TX_GBCNT + 0x40)
++
++#define GSW_REG_GDMA1_MAC_ADRL	0x508
++#define GSW_REG_GDMA1_MAC_ADRH	0x50C
++
++#define MT7621_FE_RST_GL	(FE_FE_OFFSET + 0x04)
++#define MT7620_FE_INT_STATUS2	(FE_FE_OFFSET + 0x08)
++
++/* FE_INT_STATUS reg on mt7620 define CNT_GDM1_AF at BIT(29)
++ * but after test it should be BIT(13).
++ */
++#define MT7620_FE_GDM1_AF	BIT(13)
++#define MT7621_FE_GDM1_AF	BIT(28)
++#define MT7621_FE_GDM2_AF	BIT(29)
++
++static const u16 mt7620_reg_table[FE_REG_COUNT] = {
++	[FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
++	[FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
++	[FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
++	[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
++	[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
++	[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
++	[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
++	[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
++	[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
++	[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
++	[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
++	[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
++	[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
++	[FE_REG_FE_DMA_VID_BASE] = MT7620_DMA_VID,
++	[FE_REG_FE_COUNTER_BASE] = MT7620_GDM1_TX_GBCNT,
++	[FE_REG_FE_RST_GL] = MT7621_FE_RST_GL,
++	[FE_REG_FE_INT_STATUS2] = MT7620_FE_INT_STATUS2,
++};
++
++static int mt7620_gsw_config(struct fe_priv *priv)
++{
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *) priv->soc->swpriv;
++
++	/* is the mt7530 internal or external */
++	if (priv->mii_bus && priv->mii_bus->phy_map[0x1f]) {
++		mt7530_probe(priv->device, gsw->base, NULL, 0);
++		mt7530_probe(priv->device, NULL, priv->mii_bus, 1);
++	} else {
++		mt7530_probe(priv->device, gsw->base, NULL, 1);
++	}
++
++	return 0;
++}
++
++static void mt7620_set_mac(struct fe_priv *priv, unsigned char *mac)
++{
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++	unsigned long flags;
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++	mtk_switch_w32(gsw, (mac[0] << 8) | mac[1], GSW_REG_SMACCR1);
++	mtk_switch_w32(gsw, (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
++		GSW_REG_SMACCR0);
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++}
++
++static void mt7620_auto_poll(struct mt7620_gsw *gsw)
++{
++	int phy;
++	int lsb = -1, msb = 0;
++
++	for_each_set_bit(phy, &gsw->autopoll, 32) {
++		if (lsb < 0)
++			lsb = phy;
++		msb = phy;
++	}
++
++	if (lsb == msb)
++		lsb--;
++
++	mtk_switch_w32(gsw, PHY_AN_EN | PHY_PRE_EN | PMY_MDC_CONF(5) |
++		(msb << 8) | lsb, ESW_PHY_POLLING);
++}
++
++static void mt7620_port_init(struct fe_priv *priv, struct device_node *np)
++{
++	struct mt7620_gsw *gsw = (struct mt7620_gsw *)priv->soc->swpriv;
++	const __be32 *_id = of_get_property(np, "reg", NULL);
++	int phy_mode, size, id;
++	int shift = 12;
++	u32 val, mask = 0;
++	int min = (gsw->port4 == PORT4_EPHY) ? (5) : (4);
++
++	if (!_id || (be32_to_cpu(*_id) < min) || (be32_to_cpu(*_id) > 5)) {
++		if (_id)
++			pr_err("%s: invalid port id %d\n", np->name,
++			       be32_to_cpu(*_id));
++		else
++			pr_err("%s: invalid port id\n", np->name);
++		return;
++	}
++
++	id = be32_to_cpu(*_id);
++
++	if (id == 4)
++		shift = 14;
++
++	priv->phy->phy_fixed[id] = of_get_property(np, "mediatek,fixed-link",
++						   &size);
++	if (priv->phy->phy_fixed[id] &&
++	    (size != (4 * sizeof(*priv->phy->phy_fixed[id])))) {
++		pr_err("%s: invalid fixed link property\n", np->name);
++		priv->phy->phy_fixed[id] = NULL;
++		return;
++	}
++
++	phy_mode = of_get_phy_mode(np);
++	switch (phy_mode) {
++	case PHY_INTERFACE_MODE_RGMII:
++		mask = 0;
++		break;
++	case PHY_INTERFACE_MODE_MII:
++		mask = 1;
++		break;
++	case PHY_INTERFACE_MODE_RMII:
++		mask = 2;
++		break;
++	default:
++		dev_err(priv->device, "port %d - invalid phy mode\n", id);
++		return;
++	}
++
++	priv->phy->phy_node[id] = of_parse_phandle(np, "phy-handle", 0);
++	if (!priv->phy->phy_node[id] && !priv->phy->phy_fixed[id])
++		return;
++
++	val = rt_sysc_r32(SYSC_REG_CFG1);
++	val &= ~(3 << shift);
++	val |= mask << shift;
++	rt_sysc_w32(val, SYSC_REG_CFG1);
++
++	if (priv->phy->phy_fixed[id]) {
++		const __be32 *link = priv->phy->phy_fixed[id];
++		int tx_fc, rx_fc;
++		u32 val = 0;
++
++		priv->phy->speed[id] = be32_to_cpup(link++);
++		tx_fc = be32_to_cpup(link++);
++		rx_fc = be32_to_cpup(link++);
++		priv->phy->duplex[id] = be32_to_cpup(link++);
++		priv->link[id] = 1;
++
++		switch (priv->phy->speed[id]) {
++		case SPEED_10:
++			val = 0;
++			break;
++		case SPEED_100:
++			val = 1;
++			break;
++		case SPEED_1000:
++			val = 2;
++			break;
++		default:
++			dev_err(priv->device, "invalid link speed: %d\n",
++				priv->phy->speed[id]);
++			priv->phy->phy_fixed[id] = 0;
++			return;
++		}
++		val = PMCR_SPEED(val);
++		val |= PMCR_LINK | PMCR_BACKPRES | PMCR_BACKOFF | PMCR_RX_EN |
++			PMCR_TX_EN | PMCR_FORCE | PMCR_MAC_MODE | PMCR_IPG;
++		if (tx_fc)
++			val |= PMCR_TX_FC;
++		if (rx_fc)
++			val |= PMCR_RX_FC;
++		if (priv->phy->duplex[id])
++			val |= PMCR_DUPLEX;
++		mtk_switch_w32(gsw, val, GSW_REG_PORT_PMCR(id));
++		dev_info(priv->device, "using fixed link parameters\n");
++		return;
++	}
++
++	if (priv->phy->phy_node[id] && priv->mii_bus->phy_map[id]) {
++		u32 val = PMCR_BACKPRES | PMCR_BACKOFF | PMCR_RX_EN |
++			PMCR_TX_EN |  PMCR_MAC_MODE | PMCR_IPG;
++
++		mtk_switch_w32(gsw, val, GSW_REG_PORT_PMCR(id));
++		fe_connect_phy_node(priv, priv->phy->phy_node[id]);
++		gsw->autopoll |= BIT(id);
++		mt7620_auto_poll(gsw);
++		return;
++	}
++}
++
++static void mt7620_fe_reset(void)
++{
++	fe_reset(MT7620A_RESET_FE | MT7620A_RESET_ESW);
++}
++
++static void mt7620_rxcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) | (GDMA_ICS_EN |
++					GDMA_TCS_EN | GDMA_UCS_EN),
++				MT7620A_GDMA1_FWD_CFG);
++	else
++		fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~(GDMA_ICS_EN |
++					GDMA_TCS_EN | GDMA_UCS_EN),
++				MT7620A_GDMA1_FWD_CFG);
++}
++
++static void mt7620_txcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(MT7620A_CDMA_CSG_CFG) | (CDMA_ICS_EN |
++					CDMA_UCS_EN | CDMA_TCS_EN),
++				MT7620A_CDMA_CSG_CFG);
++	else
++		fe_w32(fe_r32(MT7620A_CDMA_CSG_CFG) & ~(CDMA_ICS_EN |
++					CDMA_UCS_EN | CDMA_TCS_EN),
++				MT7620A_CDMA_CSG_CFG);
++}
++
++static int mt7620_fwd_config(struct fe_priv *priv)
++{
++	struct net_device *dev = priv_netdev(priv);
++
++	fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~7, MT7620A_GDMA1_FWD_CFG);
++
++	mt7620_txcsum_config((dev->features & NETIF_F_IP_CSUM));
++	mt7620_rxcsum_config((dev->features & NETIF_F_RXCSUM));
++
++	return 0;
++}
++
++static void mt7620_tx_dma(struct fe_tx_dma *txd)
++{
++}
++
++static void mt7620_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_RX_2B_OFFSET |
++		FE_FLAG_RX_SG_DMA | FE_FLAG_HAS_SWITCH;
++
++	netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
++		NETIF_F_HW_VLAN_CTAG_TX;
++	if (mt7620_get_eco() >= 5)
++		netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
++			NETIF_F_IPV6_CSUM;
++}
++
++static struct fe_soc_data mt7620_data = {
++	.init_data = mt7620_init_data,
++	.reset_fe = mt7620_fe_reset,
++	.set_mac = mt7620_set_mac,
++	.fwd_config = mt7620_fwd_config,
++	.tx_dma = mt7620_tx_dma,
++	.switch_init = mtk_gsw_init,
++	.port_init = mt7620_port_init,
++	.reg_table = mt7620_reg_table,
++	.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS,
++	.rx_int = RT5350_RX_DONE_INT,
++	.tx_int = RT5350_TX_DONE_INT,
++	.status_int = MT7620_FE_GDM1_AF,
++	.checksum_bit = MT7620_L4_VALID,
++	.has_carrier = mt7620_has_carrier,
++	.mdio_read = mt7620_mdio_read,
++	.mdio_write = mt7620_mdio_write,
++	.mdio_adjust_link = mt7620_mdio_link_adjust,
++};
++
++const struct of_device_id of_fe_match[] = {
++	{ .compatible = "mediatek,mt7620-eth", .data = &mt7620_data },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);

target/linux/ramips/patches-4.4/0509-net-next-mediatek-add-support-for-mt7621.patch

@@ -0,0 +1,210 @@
+From 107ff718dad1c8f6abbf6247d6796a4535b71276 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 23:50:53 +0100
+Subject: [PATCH 509/513] net-next: mediatek: add support for mt7621
+
+Add support for SoCs from the mt7620 family. This include mt7620 and mt7621.
+These all have one dedicated external gbit port and a builtin 5 port 100mbit
+switch. Additionally one of the 5 switch ports can be changed to become an
+additional gbit port that we can attach a phy to. This patch includes
+rudimentary code to power up the switch. There are a lot of magic values
+that get written to the switch and the internal phys. These values come
+straight from the SDK driver.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/mediatek/soc_mt7621.c |  186 ++++++++++++++++++++++++++++
+ 1 file changed, 186 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/soc_mt7621.c
+
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/soc_mt7621.c
+@@ -0,0 +1,186 @@
++/*   This program is free software; you can redistribute it and/or modify
++ *   it under the terms of the GNU General Public License as published by
++ *   the Free Software Foundation; version 2 of the License
++ *
++ *   This program is distributed in the hope that it will be useful,
++ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
++ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ *   GNU General Public License for more details.
++ *
++ *   Copyright (C) 2009-2015 John Crispin <[email protected]>
++ *   Copyright (C) 2009-2015 Felix Fietkau <[email protected]>
++ *   Copyright (C) 2013-2015 Michael Lee <[email protected]>
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/if_vlan.h>
++#include <linux/of_net.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#include "mtk_eth_soc.h"
++#include "gsw_mt7620.h"
++#include "mt7530.h"
++#include "mdio.h"
++
++#define MT7620A_CDMA_CSG_CFG	0x400
++#define MT7621_CDMP_IG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x00)
++#define MT7621_CDMP_EG_CTRL	(MT7620A_CDMA_CSG_CFG + 0x04)
++#define MT7621_RESET_FE		BIT(6)
++#define MT7621_L4_VALID		BIT(24)
++
++#define MT7621_TX_DMA_UDF	BIT(19)
++#define MT7621_TX_DMA_FPORT	BIT(25)
++
++#define CDMA_ICS_EN		BIT(2)
++#define CDMA_UCS_EN		BIT(1)
++#define CDMA_TCS_EN		BIT(0)
++
++#define GDMA_ICS_EN		BIT(22)
++#define GDMA_TCS_EN		BIT(21)
++#define GDMA_UCS_EN		BIT(20)
++
++/* frame engine counters */
++#define MT7621_REG_MIB_OFFSET	0x2000
++#define MT7621_PPE_AC_BCNT0	(MT7621_REG_MIB_OFFSET + 0x00)
++#define MT7621_GDM1_TX_GBCNT	(MT7621_REG_MIB_OFFSET + 0x400)
++#define MT7621_GDM2_TX_GBCNT	(MT7621_GDM1_TX_GBCNT + 0x40)
++
++#define GSW_REG_GDMA1_MAC_ADRL	0x508
++#define GSW_REG_GDMA1_MAC_ADRH	0x50C
++
++#define MT7621_FE_RST_GL	(FE_FE_OFFSET + 0x04)
++#define MT7620_FE_INT_STATUS2	(FE_FE_OFFSET + 0x08)
++
++/* FE_INT_STATUS reg on mt7620 define CNT_GDM1_AF at BIT(29)
++ * but after test it should be BIT(13).
++ */
++#define MT7620_FE_GDM1_AF	BIT(13)
++#define MT7621_FE_GDM1_AF	BIT(28)
++#define MT7621_FE_GDM2_AF	BIT(29)
++
++static const u16 mt7621_reg_table[FE_REG_COUNT] = {
++	[FE_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG,
++	[FE_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG,
++	[FE_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG,
++	[FE_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0,
++	[FE_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0,
++	[FE_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0,
++	[FE_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0,
++	[FE_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0,
++	[FE_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0,
++	[FE_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0,
++	[FE_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0,
++	[FE_REG_FE_INT_ENABLE] = RT5350_FE_INT_ENABLE,
++	[FE_REG_FE_INT_STATUS] = RT5350_FE_INT_STATUS,
++	[FE_REG_FE_DMA_VID_BASE] = 0,
++	[FE_REG_FE_COUNTER_BASE] = MT7621_GDM1_TX_GBCNT,
++	[FE_REG_FE_RST_GL] = MT7621_FE_RST_GL,
++	[FE_REG_FE_INT_STATUS2] = MT7620_FE_INT_STATUS2,
++};
++
++static int mt7621_gsw_config(struct fe_priv *priv)
++{
++	if (priv->mii_bus && priv->mii_bus->phy_map[0x1f])
++		mt7530_probe(priv->device, NULL, priv->mii_bus, 1);
++
++	return 0;
++}
++
++static void mt7621_fe_reset(void)
++{
++	fe_reset(MT7621_RESET_FE);
++}
++
++static void mt7621_rxcsum_config(bool enable)
++{
++	if (enable)
++		fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) | (GDMA_ICS_EN |
++					GDMA_TCS_EN | GDMA_UCS_EN),
++				MT7620A_GDMA1_FWD_CFG);
++	else
++		fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~(GDMA_ICS_EN |
++					GDMA_TCS_EN | GDMA_UCS_EN),
++				MT7620A_GDMA1_FWD_CFG);
++}
++
++static void mt7621_rxvlan_config(bool enable)
++{
++	if (enable)
++		fe_w32(1, MT7621_CDMP_EG_CTRL);
++	else
++		fe_w32(0, MT7621_CDMP_EG_CTRL);
++}
++
++static int mt7621_fwd_config(struct fe_priv *priv)
++{
++	struct net_device *dev = priv_netdev(priv);
++
++	fe_w32(fe_r32(MT7620A_GDMA1_FWD_CFG) & ~0xffff,
++	       MT7620A_GDMA1_FWD_CFG);
++
++	/* mt7621 doesn't have txcsum config */
++	mt7621_rxcsum_config((dev->features & NETIF_F_RXCSUM));
++	mt7621_rxvlan_config((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
++			     (priv->flags & FE_FLAG_RX_VLAN_CTAG));
++
++	return 0;
++}
++
++static void mt7621_tx_dma(struct fe_tx_dma *txd)
++{
++	txd->txd4 = MT7621_TX_DMA_FPORT;
++}
++
++static void mt7621_init_data(struct fe_soc_data *data,
++			     struct net_device *netdev)
++{
++	struct fe_priv *priv = netdev_priv(netdev);
++
++	priv->flags = FE_FLAG_PADDING_64B | FE_FLAG_RX_2B_OFFSET |
++		FE_FLAG_RX_SG_DMA | FE_FLAG_NAPI_WEIGHT |
++		FE_FLAG_HAS_SWITCH;
++
++	netdev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
++		NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG | NETIF_F_TSO |
++		NETIF_F_TSO6 | NETIF_F_IPV6_CSUM;
++}
++
++static void mt7621_set_mac(struct fe_priv *priv, unsigned char *mac)
++{
++	unsigned long flags;
++
++	spin_lock_irqsave(&priv->page_lock, flags);
++	fe_w32((mac[0] << 8) | mac[1], GSW_REG_GDMA1_MAC_ADRH);
++	fe_w32((mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5],
++	       GSW_REG_GDMA1_MAC_ADRL);
++	spin_unlock_irqrestore(&priv->page_lock, flags);
++}
++
++static struct fe_soc_data mt7621_data = {
++	.init_data = mt7621_init_data,
++	.reset_fe = mt7621_fe_reset,
++	.set_mac = mt7621_set_mac,
++	.fwd_config = mt7621_fwd_config,
++	.tx_dma = mt7621_tx_dma,
++	.switch_init = mtk_gsw_init,
++	.switch_config = mt7621_gsw_config,
++	.reg_table = mt7621_reg_table,
++	.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS,
++	.rx_int = RT5350_RX_DONE_INT,
++	.tx_int = RT5350_TX_DONE_INT,
++	.status_int = (MT7621_FE_GDM1_AF | MT7621_FE_GDM2_AF),
++	.checksum_bit = MT7621_L4_VALID,
++	.has_carrier = mt7620_has_carrier,
++	.mdio_read = mt7620_mdio_read,
++	.mdio_write = mt7620_mdio_write,
++	.mdio_adjust_link = mt7620_mdio_link_adjust,
++};
++
++const struct of_device_id of_fe_match[] = {
++	{ .compatible = "mediatek,mt7621-eth", .data = &mt7621_data },
++	{},
++};
++
++MODULE_DEVICE_TABLE(of, of_fe_match);

target/linux/ramips/patches-4.4/0510-net-next-mediatek-add-Kconfig-and-Makefile.patch

@@ -0,0 +1,127 @@
+From b6f779ea9c329451b89404583b45b9eb00155b32 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Wed, 18 Nov 2015 03:58:26 +0100
+Subject: [PATCH 510/513] net-next: mediatek: add Kconfig and Makefile
+
+This patch adds the Makefile and Kconfig required to make the driver build.
+
+Signed-off-by: John Crispin <[email protected]>
+Signed-off-by: Felix Fietkau <[email protected]>
+Signed-off-by: Michael Lee <[email protected]>
+---
+ drivers/net/ethernet/Kconfig           |    1 +
+ drivers/net/ethernet/Makefile          |    1 +
+ drivers/net/ethernet/mediatek/Kconfig  |   62 ++++++++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/Makefile |   20 +++++++++++
+ 4 files changed, 84 insertions(+)
+ create mode 100644 drivers/net/ethernet/mediatek/Kconfig
+ create mode 100644 drivers/net/ethernet/mediatek/Makefile
+
+--- a/drivers/net/ethernet/Kconfig
++++ b/drivers/net/ethernet/Kconfig
+@@ -106,6 +106,7 @@ config LANTIQ_ETOP
+ 	  Support for the MII0 inside the Lantiq SoC
+ 
+ source "drivers/net/ethernet/marvell/Kconfig"
++source "drivers/net/ethernet/mediatek/Kconfig"
+ source "drivers/net/ethernet/mellanox/Kconfig"
+ source "drivers/net/ethernet/micrel/Kconfig"
+ source "drivers/net/ethernet/microchip/Kconfig"
+--- a/drivers/net/ethernet/Makefile
++++ b/drivers/net/ethernet/Makefile
+@@ -46,6 +46,7 @@ obj-$(CONFIG_JME) += jme.o
+ obj-$(CONFIG_KORINA) += korina.o
+ obj-$(CONFIG_LANTIQ_ETOP) += lantiq_etop.o
+ obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/
++obj-$(CONFIG_NET_VENDOR_MEDIATEK) += mediatek/
+ obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
+ obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/
+ obj-$(CONFIG_NET_VENDOR_MICROCHIP) += microchip/
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/Kconfig
+@@ -0,0 +1,62 @@
++config NET_VENDOR_MEDIATEK
++	tristate "Mediatek/Ralink ethernet driver"
++	depends on RALINK
++	help
++	  This driver supports the ethernet mac inside the Mediatek and Ralink WiSoCs
++
++config NET_MEDIATEK_SOC
++	def_tristate NET_VENDOR_MEDIATEK
++
++if NET_MEDIATEK_SOC
++choice
++	prompt "MAC type"
++
++config NET_MEDIATEK_RT2880
++	bool "RT2882"
++	depends on MIPS && SOC_RT288X
++
++config NET_MEDIATEK_RT3050
++	bool "RT3050/MT7628"
++	depends on MIPS && (SOC_RT305X || SOC_MT7620)
++
++config NET_MEDIATEK_RT3883
++	bool "RT3883"
++	depends on MIPS && SOC_RT3883
++
++config NET_MEDIATEK_MT7620
++	bool "MT7620"
++	depends on MIPS && SOC_MT7620
++
++config NET_MEDIATEK_MT7621
++	bool "MT7621"
++	depends on MIPS && SOC_MT7621
++
++endchoice
++
++config NET_MEDIATEK_MDIO
++	def_bool NET_MEDIATEK_SOC
++	depends on (NET_MEDIATEK_RT2880 || NET_MEDIATEK_RT3883 || NET_MEDIATEK_MT7620 || NET_MEDIATEK_MT7621)
++	select PHYLIB
++
++config NET_MEDIATEK_MDIO_RT2880
++	def_bool NET_MEDIATEK_SOC
++	depends on (NET_MEDIATEK_RT2880 || NET_MEDIATEK_RT3883)
++	select NET_MEDIATEK_MDIO
++
++config NET_MEDIATEK_MDIO_MT7620
++	def_bool NET_MEDIATEK_SOC
++	depends on (NET_MEDIATEK_MT7620 || NET_MEDIATEK_MT7621)
++	select NET_MEDIATEK_MDIO
++
++config NET_MEDIATEK_ESW_RT3050
++	def_tristate NET_MEDIATEK_SOC
++	depends on NET_MEDIATEK_RT3050
++
++config NET_MEDIATEK_GSW_MT7620
++	def_tristate NET_MEDIATEK_SOC
++	depends on NET_MEDIATEK_MT7620
++
++config NET_MEDIATEK_GSW_MT7621
++	def_tristate NET_MEDIATEK_SOC
++	depends on NET_MEDIATEK_MT7621
++endif
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/Makefile
+@@ -0,0 +1,20 @@
++#
++# Makefile for the Ralink SoCs built-in ethernet macs
++#
++
++mtk-eth-soc-y					+= mtk_eth_soc.o ethtool.o
++
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MDIO)		+= mdio.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MDIO_RT2880)	+= mdio_rt2880.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MDIO_MT7620)	+= mdio_mt7620.o
++
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_RT2880)	+= soc_rt2880.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_RT3050)	+= soc_rt3050.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_RT3883)	+= soc_rt3883.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MT7620)	+= soc_mt7620.o
++mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MT7621)	+= soc_mt7621.o
++
++obj-$(CONFIG_NET_MEDIATEK_ESW_RT3050)		+= esw_rt3050.o
++obj-$(CONFIG_NET_MEDIATEK_GSW_MT7620)		+= gsw_mt7620.o
++obj-$(CONFIG_NET_MEDIATEK_GSW_MT7621)		+= gsw_mt7621.o
++obj-$(CONFIG_NET_MEDIATEK_SOC)			+= mtk-eth-soc.o

target/linux/ramips/patches-4.4/0511-net-mediatek-add-support-for-the-multiphy-carrier-pa.patch

@@ -0,0 +1,80 @@
+From 6543b4cef96c12903f5ec5c015cd223a6b3c9a33 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 21:16:59 +0100
+Subject: [PATCH 511/513] net: mediatek: add support for the multiphy carrier
+ patch
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/gsw_mt7620.c  |    1 +
+ drivers/net/ethernet/mediatek/gsw_mt7620.h  |    1 +
+ drivers/net/ethernet/mediatek/gsw_mt7621.c  |    1 +
+ drivers/net/ethernet/mediatek/mdio.c        |    1 +
+ drivers/net/ethernet/mediatek/mdio_mt7620.c |   12 ++++++++++++
+ 5 files changed, 16 insertions(+)
+
+--- a/drivers/net/ethernet/mediatek/gsw_mt7620.c
++++ b/drivers/net/ethernet/mediatek/gsw_mt7620.c
+@@ -54,6 +54,7 @@ static irqreturn_t gsw_interrupt_mt7620(
+ 
+ 			priv->link[i] = link;
+ 		}
++	mt7620_handle_carrier(priv);
+ 	mtk_switch_w32(gsw, status, GSW_REG_ISR);
+ 
+ 	return IRQ_HANDLED;
+--- a/drivers/net/ethernet/mediatek/gsw_mt7620.h
++++ b/drivers/net/ethernet/mediatek/gsw_mt7620.h
+@@ -113,5 +113,6 @@ u32 mt7530_mdio_r32(struct mt7620_gsw *g
+ u32 _mt7620_mii_write(struct mt7620_gsw *gsw, u32 phy_addr,
+ 			     u32 phy_register, u32 write_data);
+ u32 _mt7620_mii_read(struct mt7620_gsw *gsw, int phy_addr, int phy_reg);
++void mt7620_handle_carrier(struct fe_priv *priv);
+ 
+ #endif
+--- a/drivers/net/ethernet/mediatek/gsw_mt7621.c
++++ b/drivers/net/ethernet/mediatek/gsw_mt7621.c
+@@ -60,6 +60,7 @@ static irqreturn_t gsw_interrupt_mt7621(
+ 			}
+ 		}
+ 
++	mt7620_handle_carrier(priv);
+ 	mt7530_mdio_w32(gsw, 0x700c, 0x1f);
+ 
+ 	return IRQ_HANDLED;
+--- a/drivers/net/ethernet/mediatek/mdio.c
++++ b/drivers/net/ethernet/mediatek/mdio.c
+@@ -89,6 +89,7 @@ int fe_connect_phy_node(struct fe_priv *
+ 
+ 	phydev->supported &= PHY_GBIT_FEATURES;
+ 	phydev->advertising = phydev->supported;
++	phydev->no_auto_carrier_off = 1;
+ 
+ 	dev_info(priv->device,
+ 		 "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
+--- a/drivers/net/ethernet/mediatek/mdio_mt7620.c
++++ b/drivers/net/ethernet/mediatek/mdio_mt7620.c
+@@ -137,6 +137,17 @@ int mt7620_has_carrier(struct fe_priv *p
+ }
+ 
+ 
++void mt7620_handle_carrier(struct fe_priv *priv)
++{
++	if (!priv->phy)
++		return;
++
++	if (mt7620_has_carrier(priv))
++		netif_carrier_on(priv->netdev);
++	else
++		netif_carrier_off(priv->netdev);
++}
++
+ void mt7620_print_link_state(struct fe_priv *priv, int port, int link,
+ 			     int speed, int duplex)
+ {
+@@ -153,4 +164,5 @@ void mt7620_mdio_link_adjust(struct fe_p
+ 	mt7620_print_link_state(priv, port, priv->link[port],
+ 				priv->phy->speed[port],
+ 				(priv->phy->duplex[port] == DUPLEX_FULL));
++	mt7620_handle_carrier(priv);
+ }

target/linux/ramips/patches-4.4/0512-net-mediatek-add-swconfig-driver-for-esw_rt3050.patch

@@ -0,0 +1,901 @@
+From 4473f30809eed09037e1932a0c1805172cd997f7 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 22:07:31 +0100
+Subject: [PATCH 512/513] net: mediatek: add swconfig driver for esw_rt3050
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/esw_rt3050.c |  805 ++++++++++++++++++++++++++++
+ 1 file changed, 805 insertions(+)
+
+--- a/drivers/net/ethernet/mediatek/esw_rt3050.c
++++ b/drivers/net/ethernet/mediatek/esw_rt3050.c
+@@ -17,6 +17,8 @@
+ #include <linux/platform_device.h>
+ #include <asm/mach-ralink/ralink_regs.h>
+ 
++#include <linux/switch.h>
++
+ #include "mtk_eth_soc.h"
+ 
+ /* HW limitations for this switch:
+@@ -141,6 +143,8 @@
+ #define RT305X_ESW_PORT5		5
+ #define RT305X_ESW_PORT6		6
+ 
++#define RT305X_ESW_PORTS_NONE		0
++
+ #define RT305X_ESW_PMAP_LLLLLL		0x3f
+ #define RT305X_ESW_PMAP_LLLLWL		0x2f
+ #define RT305X_ESW_PMAP_WLLLLL		0x3e
+@@ -158,15 +162,51 @@
+ #define RT305X_ESW_PORTS_ALL						\
+ 		(RT305X_ESW_PORTS_NOCPU | RT305X_ESW_PORTS_CPU)
+ 
++#define RT305X_ESW_NUM_VLANS		16
++#define RT305X_ESW_NUM_VIDS		4096
+ #define RT305X_ESW_NUM_PORTS		7
++#define RT305X_ESW_NUM_LANWAN		6
+ #define RT305X_ESW_NUM_LEDS		5
+ 
++#define RT5350_ESW_REG_PXTPC(_x)	(0x150 + (4 * _x))
+ #define RT5350_EWS_REG_LED_POLARITY	0x168
+ #define RT5350_RESET_EPHY		BIT(24)
+ 
++enum {
++	/* Global attributes. */
++	RT305X_ESW_ATTR_ENABLE_VLAN,
++	RT305X_ESW_ATTR_ALT_VLAN_DISABLE,
++	RT305X_ESW_ATTR_BC_STATUS,
++	RT305X_ESW_ATTR_LED_FREQ,
++	/* Port attributes. */
++	RT305X_ESW_ATTR_PORT_DISABLE,
++	RT305X_ESW_ATTR_PORT_DOUBLETAG,
++	RT305X_ESW_ATTR_PORT_UNTAG,
++	RT305X_ESW_ATTR_PORT_LED,
++	RT305X_ESW_ATTR_PORT_LAN,
++	RT305X_ESW_ATTR_PORT_RECV_BAD,
++	RT305X_ESW_ATTR_PORT_RECV_GOOD,
++	RT5350_ESW_ATTR_PORT_TR_BAD,
++	RT5350_ESW_ATTR_PORT_TR_GOOD,
++};
++
+ struct esw_port {
+ 	bool	disable;
++	bool	doubletag;
++	bool	untag;
+ 	u8	led;
++	u16	pvid;
++};
++
++struct esw_vlan {
++	u8	ports;
++	u16	vid;
++};
++
++enum {
++	RT305X_ESW_VLAN_CONFIG_NONE = 0,
++	RT305X_ESW_VLAN_CONFIG_LLLLW,
++	RT305X_ESW_VLAN_CONFIG_WLLLL,
+ };
+ 
+ struct rt305x_esw {
+@@ -180,6 +220,12 @@ struct rt305x_esw {
+ 	unsigned char		port_map;
+ 	unsigned int		reg_led_polarity;
+ 
++	struct switch_dev	swdev;
++	bool			global_vlan_enable;
++	bool			alt_vlan_disable;
++	int			bc_storm_protect;
++	int			led_frequency;
++	struct esw_vlan vlans[RT305X_ESW_NUM_VLANS];
+ 	struct esw_port ports[RT305X_ESW_NUM_PORTS];
+ 
+ };
+@@ -252,6 +298,71 @@ out:
+ 	return ret;
+ }
+ 
++static unsigned esw_get_vlan_id(struct rt305x_esw *esw, unsigned vlan)
++{
++	unsigned s;
++	unsigned val;
++
++	s = RT305X_ESW_VLANI_VID_S * (vlan % 2);
++	val = esw_r32(esw, RT305X_ESW_REG_VLANI(vlan / 2));
++	val = (val >> s) & RT305X_ESW_VLANI_VID_M;
++
++	return val;
++}
++
++static void esw_set_vlan_id(struct rt305x_esw *esw, unsigned vlan, unsigned vid)
++{
++	unsigned s;
++
++	s = RT305X_ESW_VLANI_VID_S * (vlan % 2);
++	esw_rmw(esw,
++		       RT305X_ESW_REG_VLANI(vlan / 2),
++		       RT305X_ESW_VLANI_VID_M << s,
++		       (vid & RT305X_ESW_VLANI_VID_M) << s);
++}
++
++static unsigned esw_get_pvid(struct rt305x_esw *esw, unsigned port)
++{
++	unsigned s, val;
++
++	s = RT305X_ESW_PVIDC_PVID_S * (port % 2);
++	val = esw_r32(esw, RT305X_ESW_REG_PVIDC(port / 2));
++	return (val >> s) & RT305X_ESW_PVIDC_PVID_M;
++}
++
++static void esw_set_pvid(struct rt305x_esw *esw, unsigned port, unsigned pvid)
++{
++	unsigned s;
++
++	s = RT305X_ESW_PVIDC_PVID_S * (port % 2);
++	esw_rmw(esw,
++		       RT305X_ESW_REG_PVIDC(port / 2),
++		       RT305X_ESW_PVIDC_PVID_M << s,
++		       (pvid & RT305X_ESW_PVIDC_PVID_M) << s);
++}
++
++static unsigned esw_get_vmsc(struct rt305x_esw *esw, unsigned vlan)
++{
++	unsigned s, val;
++
++	s = RT305X_ESW_VMSC_MSC_S * (vlan % 4);
++	val = esw_r32(esw, RT305X_ESW_REG_VMSC(vlan / 4));
++	val = (val >> s) & RT305X_ESW_VMSC_MSC_M;
++
++	return val;
++}
++
++static void esw_set_vmsc(struct rt305x_esw *esw, unsigned vlan, unsigned msc)
++{
++	unsigned s;
++
++	s = RT305X_ESW_VMSC_MSC_S * (vlan % 4);
++	esw_rmw(esw,
++		       RT305X_ESW_REG_VMSC(vlan / 4),
++		       RT305X_ESW_VMSC_MSC_M << s,
++		       (msc & RT305X_ESW_VMSC_MSC_M) << s);
++}
++
+ static unsigned esw_get_port_disable(struct rt305x_esw *esw)
+ {
+ 	unsigned reg;
+@@ -261,6 +372,59 @@ static unsigned esw_get_port_disable(str
+ 	       RT305X_ESW_POC0_DIS_PORT_M;
+ }
+ 
++static void esw_set_port_disable(struct rt305x_esw *esw, unsigned disable_mask)
++{
++	unsigned old_mask;
++	unsigned enable_mask;
++	unsigned changed;
++	int i;
++
++	old_mask = esw_get_port_disable(esw);
++	changed = old_mask ^ disable_mask;
++	enable_mask = old_mask & disable_mask;
++
++	/* enable before writing to MII */
++	esw_rmw(esw, RT305X_ESW_REG_POC0,
++		       (RT305X_ESW_POC0_DIS_PORT_M <<
++			RT305X_ESW_POC0_DIS_PORT_S),
++		       enable_mask << RT305X_ESW_POC0_DIS_PORT_S);
++
++	for (i = 0; i < RT305X_ESW_NUM_LEDS; i++) {
++		if (!(changed & (1 << i)))
++			continue;
++		if (disable_mask & (1 << i)) {
++			/* disable */
++			rt305x_mii_write(esw, i, MII_BMCR,
++					 BMCR_PDOWN);
++		} else {
++			/* enable */
++			rt305x_mii_write(esw, i, MII_BMCR,
++					 BMCR_FULLDPLX |
++					 BMCR_ANENABLE |
++					 BMCR_ANRESTART |
++					 BMCR_SPEED100);
++		}
++	}
++
++	/* disable after writing to MII */
++	esw_rmw(esw, RT305X_ESW_REG_POC0,
++		       (RT305X_ESW_POC0_DIS_PORT_M <<
++			RT305X_ESW_POC0_DIS_PORT_S),
++		       disable_mask << RT305X_ESW_POC0_DIS_PORT_S);
++}
++
++static void esw_set_gsc(struct rt305x_esw *esw)
++{
++	esw_rmw(esw, RT305X_ESW_REG_SGC,
++		RT305X_ESW_GSC_BC_STROM_MASK << RT305X_ESW_GSC_BC_STROM_SHIFT,
++		esw->bc_storm_protect << RT305X_ESW_GSC_BC_STROM_SHIFT);
++	esw_rmw(esw, RT305X_ESW_REG_SGC,
++		RT305X_ESW_GSC_LED_FREQ_MASK << RT305X_ESW_GSC_LED_FREQ_SHIFT,
++		esw->led_frequency << RT305X_ESW_GSC_LED_FREQ_SHIFT);
++}
++
++static int esw_apply_config(struct switch_dev *dev);
++
+ static void esw_hw_init(struct rt305x_esw *esw)
+ {
+ 	int i;
+@@ -519,6 +683,9 @@ static void esw_hw_init(struct rt305x_es
+ 	for (i = 0; i < RT305X_ESW_NUM_LEDS; i++)
+ 		esw->ports[i].led = 0x05;
+ 
++	/* Apply the empty config. */
++	esw_apply_config(&esw->swdev);
++
+ 	/* Only unmask the port change interrupt */
+ 	esw_w32(esw, ~RT305X_ESW_PORT_ST_CHG, RT305X_ESW_REG_IMR);
+ }
+@@ -541,11 +708,629 @@ static irqreturn_t esw_interrupt(int irq
+ 	return IRQ_HANDLED;
+ }
+ 
++static int esw_apply_config(struct switch_dev *dev)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int i;
++	u8 disable = 0;
++	u8 doubletag = 0;
++	u8 en_vlan = 0;
++	u8 untag = 0;
++
++	for (i = 0; i < RT305X_ESW_NUM_VLANS; i++) {
++		u32 vid, vmsc;
++		if (esw->global_vlan_enable) {
++			vid = esw->vlans[i].vid;
++			vmsc = esw->vlans[i].ports;
++		} else {
++			vid = RT305X_ESW_VLAN_NONE;
++			vmsc = RT305X_ESW_PORTS_NONE;
++		}
++		esw_set_vlan_id(esw, i, vid);
++		esw_set_vmsc(esw, i, vmsc);
++	}
++
++	for (i = 0; i < RT305X_ESW_NUM_PORTS; i++) {
++		u32 pvid;
++		disable |= esw->ports[i].disable << i;
++		if (esw->global_vlan_enable) {
++			doubletag |= esw->ports[i].doubletag << i;
++			en_vlan   |= 1                       << i;
++			untag     |= esw->ports[i].untag     << i;
++			pvid       = esw->ports[i].pvid;
++		} else {
++			int x = esw->alt_vlan_disable ? 0 : 1;
++			doubletag |= x << i;
++			en_vlan   |= x << i;
++			untag     |= x << i;
++			pvid       = 0;
++		}
++		esw_set_pvid(esw, i, pvid);
++		if (i < RT305X_ESW_NUM_LEDS)
++			esw_w32(esw, esw->ports[i].led,
++				      RT305X_ESW_REG_P0LED + 4*i);
++	}
++
++	esw_set_gsc(esw);
++	esw_set_port_disable(esw, disable);
++	esw_rmw(esw, RT305X_ESW_REG_SGC2,
++		       (RT305X_ESW_SGC2_DOUBLE_TAG_M <<
++			RT305X_ESW_SGC2_DOUBLE_TAG_S),
++		       doubletag << RT305X_ESW_SGC2_DOUBLE_TAG_S);
++	esw_rmw(esw, RT305X_ESW_REG_PFC1,
++		       RT305X_ESW_PFC1_EN_VLAN_M << RT305X_ESW_PFC1_EN_VLAN_S,
++		       en_vlan << RT305X_ESW_PFC1_EN_VLAN_S);
++	esw_rmw(esw, RT305X_ESW_REG_POC2,
++		       RT305X_ESW_POC2_UNTAG_EN_M << RT305X_ESW_POC2_UNTAG_EN_S,
++		       untag << RT305X_ESW_POC2_UNTAG_EN_S);
++
++	if (!esw->global_vlan_enable) {
++		/*
++		 * Still need to put all ports into vlan 0 or they'll be
++		 * isolated.
++		 * NOTE: vlan 0 is special, no vlan tag is prepended
++		 */
++		esw_set_vlan_id(esw, 0, 0);
++		esw_set_vmsc(esw, 0, RT305X_ESW_PORTS_ALL);
++	}
++
++	return 0;
++}
++
++static int esw_reset_switch(struct switch_dev *dev)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	esw->global_vlan_enable = 0;
++	memset(esw->ports, 0, sizeof(esw->ports));
++	memset(esw->vlans, 0, sizeof(esw->vlans));
++	esw_hw_init(esw);
++
++	return 0;
++}
++
++static int esw_get_vlan_enable(struct switch_dev *dev,
++			   const struct switch_attr *attr,
++			   struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	val->value.i = esw->global_vlan_enable;
++
++	return 0;
++}
++
++static int esw_set_vlan_enable(struct switch_dev *dev,
++			   const struct switch_attr *attr,
++			   struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	esw->global_vlan_enable = val->value.i != 0;
++
++	return 0;
++}
++
++static int esw_get_alt_vlan_disable(struct switch_dev *dev,
++				const struct switch_attr *attr,
++				struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	val->value.i = esw->alt_vlan_disable;
++
++	return 0;
++}
++
++static int esw_set_alt_vlan_disable(struct switch_dev *dev,
++				const struct switch_attr *attr,
++				struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	esw->alt_vlan_disable = val->value.i != 0;
++
++	return 0;
++}
++
++static int
++rt305x_esw_set_bc_status(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	esw->bc_storm_protect = val->value.i & RT305X_ESW_GSC_BC_STROM_MASK;
++
++	return 0;
++}
++
++static int
++rt305x_esw_get_bc_status(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	val->value.i = esw->bc_storm_protect;
++
++	return 0;
++}
++
++static int
++rt305x_esw_set_led_freq(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	esw->led_frequency = val->value.i & RT305X_ESW_GSC_LED_FREQ_MASK;
++
++	return 0;
++}
++
++static int
++rt305x_esw_get_led_freq(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	val->value.i = esw->led_frequency;
++
++	return 0;
++}
++
++static int esw_get_port_link(struct switch_dev *dev,
++			 int port,
++			 struct switch_port_link *link)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	u32 speed, poa;
++
++	if (port < 0 || port >= RT305X_ESW_NUM_PORTS)
++		return -EINVAL;
++
++	poa = esw_r32(esw, RT305X_ESW_REG_POA) >> port;
++
++	link->link = (poa >> RT305X_ESW_LINK_S) & 1;
++	link->duplex = (poa >> RT305X_ESW_DUPLEX_S) & 1;
++	if (port < RT305X_ESW_NUM_LEDS) {
++		speed = (poa >> RT305X_ESW_SPD_S) & 1;
++	} else {
++		if (port == RT305X_ESW_NUM_PORTS - 1)
++			poa >>= 1;
++		speed = (poa >> RT305X_ESW_SPD_S) & 3;
++	}
++	switch (speed) {
++	case 0:
++		link->speed = SWITCH_PORT_SPEED_10;
++		break;
++	case 1:
++		link->speed = SWITCH_PORT_SPEED_100;
++		break;
++	case 2:
++	case 3: /* forced gige speed can be 2 or 3 */
++		link->speed = SWITCH_PORT_SPEED_1000;
++		break;
++	default:
++		link->speed = SWITCH_PORT_SPEED_UNKNOWN;
++		break;
++	}
++
++	return 0;
++}
++
++static int esw_get_port_bool(struct switch_dev *dev,
++			 const struct switch_attr *attr,
++			 struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int idx = val->port_vlan;
++	u32 x, reg, shift;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_PORTS)
++		return -EINVAL;
++
++	switch (attr->id) {
++	case RT305X_ESW_ATTR_PORT_DISABLE:
++		reg = RT305X_ESW_REG_POC0;
++		shift = RT305X_ESW_POC0_DIS_PORT_S;
++		break;
++	case RT305X_ESW_ATTR_PORT_DOUBLETAG:
++		reg = RT305X_ESW_REG_SGC2;
++		shift = RT305X_ESW_SGC2_DOUBLE_TAG_S;
++		break;
++	case RT305X_ESW_ATTR_PORT_UNTAG:
++		reg = RT305X_ESW_REG_POC2;
++		shift = RT305X_ESW_POC2_UNTAG_EN_S;
++		break;
++	case RT305X_ESW_ATTR_PORT_LAN:
++		reg = RT305X_ESW_REG_SGC2;
++		shift = RT305X_ESW_SGC2_LAN_PMAP_S;
++		if (idx >= RT305X_ESW_NUM_LANWAN)
++			return -EINVAL;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	x = esw_r32(esw, reg);
++	val->value.i = (x >> (idx + shift)) & 1;
++
++	return 0;
++}
++
++static int esw_set_port_bool(struct switch_dev *dev,
++			 const struct switch_attr *attr,
++			 struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int idx = val->port_vlan;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_PORTS ||
++	    val->value.i < 0 || val->value.i > 1)
++		return -EINVAL;
++
++	switch (attr->id) {
++	case RT305X_ESW_ATTR_PORT_DISABLE:
++		esw->ports[idx].disable = val->value.i;
++		break;
++	case RT305X_ESW_ATTR_PORT_DOUBLETAG:
++		esw->ports[idx].doubletag = val->value.i;
++		break;
++	case RT305X_ESW_ATTR_PORT_UNTAG:
++		esw->ports[idx].untag = val->value.i;
++		break;
++	default:
++		return -EINVAL;
++	}
++
++	return 0;
++}
++
++static int esw_get_port_recv_badgood(struct switch_dev *dev,
++				 const struct switch_attr *attr,
++				 struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int idx = val->port_vlan;
++	int shift = attr->id == RT305X_ESW_ATTR_PORT_RECV_GOOD ? 0 : 16;
++	u32 reg;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_LANWAN)
++		return -EINVAL;
++	reg = esw_r32(esw, RT305X_ESW_REG_PXPC(idx));
++	val->value.i = (reg >> shift) & 0xffff;
++
++	return 0;
++}
++
++static int
++esw_get_port_tr_badgood(struct switch_dev *dev,
++				 const struct switch_attr *attr,
++				 struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	int idx = val->port_vlan;
++	int shift = attr->id == RT5350_ESW_ATTR_PORT_TR_GOOD ? 0 : 16;
++	u32 reg;
++
++	if ((ralink_soc != RT305X_SOC_RT5350) && (ralink_soc != MT762X_SOC_MT7628AN) && (ralink_soc != MT762X_SOC_MT7688))
++		return -EINVAL;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_LANWAN)
++		return -EINVAL;
++
++	reg = esw_r32(esw, RT5350_ESW_REG_PXTPC(idx));
++	val->value.i = (reg >> shift) & 0xffff;
++
++	return 0;
++}
++
++static int esw_get_port_led(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int idx = val->port_vlan;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_PORTS ||
++	    idx >= RT305X_ESW_NUM_LEDS)
++		return -EINVAL;
++
++	val->value.i = esw_r32(esw, RT305X_ESW_REG_P0LED + 4*idx);
++
++	return 0;
++}
++
++static int esw_set_port_led(struct switch_dev *dev,
++			const struct switch_attr *attr,
++			struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int idx = val->port_vlan;
++
++	if (idx < 0 || idx >= RT305X_ESW_NUM_LEDS)
++		return -EINVAL;
++
++	esw->ports[idx].led = val->value.i;
++
++	return 0;
++}
++
++static int esw_get_port_pvid(struct switch_dev *dev, int port, int *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	if (port >= RT305X_ESW_NUM_PORTS)
++		return -EINVAL;
++
++	*val = esw_get_pvid(esw, port);
++
++	return 0;
++}
++
++static int esw_set_port_pvid(struct switch_dev *dev, int port, int val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++
++	if (port >= RT305X_ESW_NUM_PORTS)
++		return -EINVAL;
++
++	esw->ports[port].pvid = val;
++
++	return 0;
++}
++
++static int esw_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	u32 vmsc, poc2;
++	int vlan_idx = -1;
++	int i;
++
++	val->len = 0;
++
++	if (val->port_vlan < 0 || val->port_vlan >= RT305X_ESW_NUM_VIDS)
++		return -EINVAL;
++
++	/* valid vlan? */
++	for (i = 0; i < RT305X_ESW_NUM_VLANS; i++) {
++		if (esw_get_vlan_id(esw, i) == val->port_vlan &&
++		    esw_get_vmsc(esw, i) != RT305X_ESW_PORTS_NONE) {
++			vlan_idx = i;
++			break;
++		}
++	}
++
++	if (vlan_idx == -1)
++		return -EINVAL;
++
++	vmsc = esw_get_vmsc(esw, vlan_idx);
++	poc2 = esw_r32(esw, RT305X_ESW_REG_POC2);
++
++	for (i = 0; i < RT305X_ESW_NUM_PORTS; i++) {
++		struct switch_port *p;
++		int port_mask = 1 << i;
++
++		if (!(vmsc & port_mask))
++			continue;
++
++		p = &val->value.ports[val->len++];
++		p->id = i;
++		if (poc2 & (port_mask << RT305X_ESW_POC2_UNTAG_EN_S))
++			p->flags = 0;
++		else
++			p->flags = 1 << SWITCH_PORT_FLAG_TAGGED;
++	}
++
++	return 0;
++}
++
++static int esw_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
++{
++	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
++	int ports;
++	int vlan_idx = -1;
++	int i;
++
++	if (val->port_vlan < 0 || val->port_vlan >= RT305X_ESW_NUM_VIDS ||
++	    val->len > RT305X_ESW_NUM_PORTS)
++		return -EINVAL;
++
++	/* one of the already defined vlans? */
++	for (i = 0; i < RT305X_ESW_NUM_VLANS; i++) {
++		if (esw->vlans[i].vid == val->port_vlan &&
++		    esw->vlans[i].ports != RT305X_ESW_PORTS_NONE) {
++			vlan_idx = i;
++			break;
++		}
++	}
++
++	/* select a free slot */
++	for (i = 0; vlan_idx == -1 && i < RT305X_ESW_NUM_VLANS; i++) {
++		if (esw->vlans[i].ports == RT305X_ESW_PORTS_NONE)
++			vlan_idx = i;
++	}
++
++	/* bail if all slots are in use */
++	if (vlan_idx == -1)
++		return -EINVAL;
++
++	ports = RT305X_ESW_PORTS_NONE;
++	for (i = 0; i < val->len; i++) {
++		struct switch_port *p = &val->value.ports[i];
++		int port_mask = 1 << p->id;
++		bool untagged = !(p->flags & (1 << SWITCH_PORT_FLAG_TAGGED));
++
++		if (p->id >= RT305X_ESW_NUM_PORTS)
++			return -EINVAL;
++
++		ports |= port_mask;
++		esw->ports[p->id].untag = untagged;
++	}
++	esw->vlans[vlan_idx].ports = ports;
++	if (ports == RT305X_ESW_PORTS_NONE)
++		esw->vlans[vlan_idx].vid = RT305X_ESW_VLAN_NONE;
++	else
++		esw->vlans[vlan_idx].vid = val->port_vlan;
++
++	return 0;
++}
++
++static const struct switch_attr esw_global[] = {
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "enable_vlan",
++		.description = "VLAN mode (1:enabled)",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_ENABLE_VLAN,
++		.get = esw_get_vlan_enable,
++		.set = esw_set_vlan_enable,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "alternate_vlan_disable",
++		.description = "Use en_vlan instead of doubletag to disable"
++				" VLAN mode",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_ALT_VLAN_DISABLE,
++		.get = esw_get_alt_vlan_disable,
++		.set = esw_set_alt_vlan_disable,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "bc_storm_protect",
++		.description = "Global broadcast storm protection (0:Disable, 1:64 blocks, 2:96 blocks, 3:128 blocks)",
++		.max = 3,
++		.id = RT305X_ESW_ATTR_BC_STATUS,
++		.get = rt305x_esw_get_bc_status,
++		.set = rt305x_esw_set_bc_status,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "led_frequency",
++		.description = "LED Flash frequency (0:30mS, 1:60mS, 2:240mS, 3:480mS)",
++		.max = 3,
++		.id = RT305X_ESW_ATTR_LED_FREQ,
++		.get = rt305x_esw_get_led_freq,
++		.set = rt305x_esw_set_led_freq,
++	}
++};
++
++static const struct switch_attr esw_port[] = {
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "disable",
++		.description = "Port state (1:disabled)",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_PORT_DISABLE,
++		.get = esw_get_port_bool,
++		.set = esw_set_port_bool,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "doubletag",
++		.description = "Double tagging for incoming vlan packets "
++				"(1:enabled)",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_PORT_DOUBLETAG,
++		.get = esw_get_port_bool,
++		.set = esw_set_port_bool,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "untag",
++		.description = "Untag (1:strip outgoing vlan tag)",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_PORT_UNTAG,
++		.get = esw_get_port_bool,
++		.set = esw_set_port_bool,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "led",
++		.description = "LED mode (0:link, 1:100m, 2:duplex, 3:activity,"
++				" 4:collision, 5:linkact, 6:duplcoll, 7:10mact,"
++				" 8:100mact, 10:blink, 11:off, 12:on)",
++		.max = 15,
++		.id = RT305X_ESW_ATTR_PORT_LED,
++		.get = esw_get_port_led,
++		.set = esw_set_port_led,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "lan",
++		.description = "HW port group (0:wan, 1:lan)",
++		.max = 1,
++		.id = RT305X_ESW_ATTR_PORT_LAN,
++		.get = esw_get_port_bool,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "recv_bad",
++		.description = "Receive bad packet counter",
++		.id = RT305X_ESW_ATTR_PORT_RECV_BAD,
++		.get = esw_get_port_recv_badgood,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "recv_good",
++		.description = "Receive good packet counter",
++		.id = RT305X_ESW_ATTR_PORT_RECV_GOOD,
++		.get = esw_get_port_recv_badgood,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "tr_bad",
++
++		.description = "Transmit bad packet counter. rt5350 only",
++		.id = RT5350_ESW_ATTR_PORT_TR_BAD,
++		.get = esw_get_port_tr_badgood,
++	},
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "tr_good",
++
++		.description = "Transmit good packet counter. rt5350 only",
++		.id = RT5350_ESW_ATTR_PORT_TR_GOOD,
++		.get = esw_get_port_tr_badgood,
++	},
++};
++
++static const struct switch_attr esw_vlan[] = {
++};
++
++static const struct switch_dev_ops esw_ops = {
++	.attr_global = {
++		.attr = esw_global,
++		.n_attr = ARRAY_SIZE(esw_global),
++	},
++	.attr_port = {
++		.attr = esw_port,
++		.n_attr = ARRAY_SIZE(esw_port),
++	},
++	.attr_vlan = {
++		.attr = esw_vlan,
++		.n_attr = ARRAY_SIZE(esw_vlan),
++	},
++	.get_vlan_ports = esw_get_vlan_ports,
++	.set_vlan_ports = esw_set_vlan_ports,
++	.get_port_pvid = esw_get_port_pvid,
++	.set_port_pvid = esw_set_port_pvid,
++	.get_port_link = esw_get_port_link,
++	.apply_config = esw_apply_config,
++	.reset_switch = esw_reset_switch,
++};
++
+ static int esw_probe(struct platform_device *pdev)
+ {
+ 	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ 	struct device_node *np = pdev->dev.of_node;
+ 	const __be32 *port_map, *reg_init;
++	struct switch_dev *swdev;
+ 	struct rt305x_esw *esw;
+ 	struct resource *irq;
+ 	int ret;
+@@ -568,6 +1353,21 @@ static int esw_probe(struct platform_dev
+ 	if (reg_init)
+ 		esw->reg_led_polarity = be32_to_cpu(*reg_init);
+ 
++	swdev = &esw->swdev;
++	swdev->of_node = pdev->dev.of_node;
++	swdev->name = "rt305x-esw";
++	swdev->alias = "rt305x";
++	swdev->cpu_port = RT305X_ESW_PORT6;
++	swdev->ports = RT305X_ESW_NUM_PORTS;
++	swdev->vlans = RT305X_ESW_NUM_VIDS;
++	swdev->ops = &esw_ops;
++
++	ret = register_switch(swdev, NULL);
++	if (ret < 0) {
++		dev_err(&pdev->dev, "register_switch failed\n");
++		goto unmap_base;
++	}
++
+ 	platform_set_drvdata(pdev, esw);
+ 
+ 	spin_lock_init(&esw->reg_rw_lock);
+@@ -583,6 +1383,11 @@ static int esw_probe(struct platform_dev
+ 	}
+ 
+ 	return ret;
++
++unmap_base:
++	iounmap(esw->base);
++	kfree(esw);
++	return ret;
+ }
+ 
+ static int esw_remove(struct platform_device *pdev)

target/linux/ramips/patches-4.4/0513-net-mediatek-add-swconfig-driver-for-gsw_mt762x.patch

@@ -0,0 +1,896 @@
+From cf5a08f1f16913da8bb24a96afaa2969b29d0827 Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Mon, 14 Dec 2015 22:25:57 +0100
+Subject: [PATCH 513/513] net: mediatek: add swconfig driver for gsw_mt762x
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/Makefile      |    4 +-
+ drivers/net/ethernet/mediatek/mt7530.c      |  804 +++++++++++++++++++++++++++
+ drivers/net/ethernet/mediatek/mt7530.h      |   20 +
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c |    9 +-
+ drivers/net/ethernet/mediatek/mtk_eth_soc.h |    1 +
+ drivers/net/ethernet/mediatek/soc_mt7620.c  |    1 +
+ 6 files changed, 835 insertions(+), 4 deletions(-)
+ create mode 100644 drivers/net/ethernet/mediatek/mt7530.c
+ create mode 100644 drivers/net/ethernet/mediatek/mt7530.h
+
+--- a/drivers/net/ethernet/mediatek/Makefile
++++ b/drivers/net/ethernet/mediatek/Makefile
+@@ -15,6 +15,6 @@ mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MT7620
+ mtk-eth-soc-$(CONFIG_NET_MEDIATEK_MT7621)	+= soc_mt7621.o
+ 
+ obj-$(CONFIG_NET_MEDIATEK_ESW_RT3050)		+= esw_rt3050.o
+-obj-$(CONFIG_NET_MEDIATEK_GSW_MT7620)		+= gsw_mt7620.o
+-obj-$(CONFIG_NET_MEDIATEK_GSW_MT7621)		+= gsw_mt7621.o
++obj-$(CONFIG_NET_MEDIATEK_GSW_MT7620)		+= gsw_mt7620.o mt7530.o
++obj-$(CONFIG_NET_MEDIATEK_GSW_MT7621)		+= gsw_mt7621.o mt7530.o
+ obj-$(CONFIG_NET_MEDIATEK_SOC)			+= mtk-eth-soc.o
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mt7530.c
+@@ -0,0 +1,804 @@
++/*
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#include <linux/if.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/list.h>
++#include <linux/if_ether.h>
++#include <linux/skbuff.h>
++#include <linux/netdevice.h>
++#include <linux/netlink.h>
++#include <linux/bitops.h>
++#include <net/genetlink.h>
++#include <linux/switch.h>
++#include <linux/delay.h>
++#include <linux/phy.h>
++#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
++#include <linux/lockdep.h>
++#include <linux/workqueue.h>
++#include <linux/of_device.h>
++
++#include "mt7530.h"
++
++#define MT7530_CPU_PORT		6
++#define MT7530_NUM_PORTS	8
++#define MT7530_NUM_VLANS	16
++#define MT7530_MAX_VID		4095
++#define MT7530_MIN_VID		0
++
++/* registers */
++#define REG_ESW_VLAN_VTCR		0x90
++#define REG_ESW_VLAN_VAWD1		0x94
++#define REG_ESW_VLAN_VAWD2		0x98
++#define REG_ESW_VLAN_VTIM(x)	(0x100 + 4 * ((x) / 2))
++
++#define REG_ESW_VLAN_VAWD1_IVL_MAC	BIT(30)
++#define REG_ESW_VLAN_VAWD1_VTAG_EN	BIT(28)
++#define REG_ESW_VLAN_VAWD1_VALID	BIT(0)
++
++/* vlan egress mode */
++enum {
++	ETAG_CTRL_UNTAG	= 0,
++	ETAG_CTRL_TAG	= 2,
++	ETAG_CTRL_SWAP	= 1,
++	ETAG_CTRL_STACK	= 3,
++};
++
++#define REG_ESW_PORT_PCR(x)	(0x2004 | ((x) << 8))
++#define REG_ESW_PORT_PVC(x)	(0x2010 | ((x) << 8))
++#define REG_ESW_PORT_PPBV1(x)	(0x2014 | ((x) << 8))
++
++#define REG_HWTRAP		0x7804
++
++#define MIB_DESC(_s , _o, _n)   \
++	{                       \
++		.size = (_s),   \
++		.offset = (_o), \
++		.name = (_n),   \
++	}
++
++struct mt7xxx_mib_desc {
++	unsigned int size;
++	unsigned int offset;
++	const char *name;
++};
++
++#define MT7621_MIB_COUNTER_BASE	0x4000
++#define MT7621_MIB_COUNTER_PORT_OFFSET	0x100
++#define MT7621_STATS_TDPC	0x00
++#define MT7621_STATS_TCRC	0x04
++#define MT7621_STATS_TUPC	0x08
++#define MT7621_STATS_TMPC	0x0C
++#define MT7621_STATS_TBPC	0x10
++#define MT7621_STATS_TCEC	0x14
++#define MT7621_STATS_TSCEC	0x18
++#define MT7621_STATS_TMCEC	0x1C
++#define MT7621_STATS_TDEC	0x20
++#define MT7621_STATS_TLCEC	0x24
++#define MT7621_STATS_TXCEC	0x28
++#define MT7621_STATS_TPPC	0x2C
++#define MT7621_STATS_TL64PC	0x30
++#define MT7621_STATS_TL65PC	0x34
++#define MT7621_STATS_TL128PC	0x38
++#define MT7621_STATS_TL256PC	0x3C
++#define MT7621_STATS_TL512PC	0x40
++#define MT7621_STATS_TL1024PC	0x44
++#define MT7621_STATS_TOC	0x48
++#define MT7621_STATS_RDPC	0x60
++#define MT7621_STATS_RFPC	0x64
++#define MT7621_STATS_RUPC	0x68
++#define MT7621_STATS_RMPC	0x6C
++#define MT7621_STATS_RBPC	0x70
++#define MT7621_STATS_RAEPC	0x74
++#define MT7621_STATS_RCEPC	0x78
++#define MT7621_STATS_RUSPC	0x7C
++#define MT7621_STATS_RFEPC	0x80
++#define MT7621_STATS_ROSPC	0x84
++#define MT7621_STATS_RJEPC	0x88
++#define MT7621_STATS_RPPC	0x8C
++#define MT7621_STATS_RL64PC	0x90
++#define MT7621_STATS_RL65PC	0x94
++#define MT7621_STATS_RL128PC	0x98
++#define MT7621_STATS_RL256PC	0x9C
++#define MT7621_STATS_RL512PC	0xA0
++#define MT7621_STATS_RL1024PC	0xA4
++#define MT7621_STATS_ROC	0xA8
++#define MT7621_STATS_RDPC_CTRL	0xB0
++#define MT7621_STATS_RDPC_ING	0xB4
++#define MT7621_STATS_RDPC_ARL	0xB8
++
++static const struct mt7xxx_mib_desc mt7621_mibs[] = {
++	MIB_DESC(1, MT7621_STATS_TDPC, "TxDrop"),
++	MIB_DESC(1, MT7621_STATS_TCRC, "TxCRC"),
++	MIB_DESC(1, MT7621_STATS_TUPC, "TxUni"),
++	MIB_DESC(1, MT7621_STATS_TMPC, "TxMulti"),
++	MIB_DESC(1, MT7621_STATS_TBPC, "TxBroad"),
++	MIB_DESC(1, MT7621_STATS_TCEC, "TxCollision"),
++	MIB_DESC(1, MT7621_STATS_TSCEC, "TxSingleCol"),
++	MIB_DESC(1, MT7621_STATS_TMCEC, "TxMultiCol"),
++	MIB_DESC(1, MT7621_STATS_TDEC, "TxDefer"),
++	MIB_DESC(1, MT7621_STATS_TLCEC, "TxLateCol"),
++	MIB_DESC(1, MT7621_STATS_TXCEC, "TxExcCol"),
++	MIB_DESC(1, MT7621_STATS_TPPC, "TxPause"),
++	MIB_DESC(1, MT7621_STATS_TL64PC, "Tx64Byte"),
++	MIB_DESC(1, MT7621_STATS_TL65PC, "Tx65Byte"),
++	MIB_DESC(1, MT7621_STATS_TL128PC, "Tx128Byte"),
++	MIB_DESC(1, MT7621_STATS_TL256PC, "Tx256Byte"),
++	MIB_DESC(1, MT7621_STATS_TL512PC, "Tx512Byte"),
++	MIB_DESC(1, MT7621_STATS_TL1024PC, "Tx1024Byte"),
++	MIB_DESC(2, MT7621_STATS_TOC, "TxByte"),
++	MIB_DESC(1, MT7621_STATS_RDPC, "RxDrop"),
++	MIB_DESC(1, MT7621_STATS_RFPC, "RxFiltered"),
++	MIB_DESC(1, MT7621_STATS_RUPC, "RxUni"),
++	MIB_DESC(1, MT7621_STATS_RMPC, "RxMulti"),
++	MIB_DESC(1, MT7621_STATS_RBPC, "RxBroad"),
++	MIB_DESC(1, MT7621_STATS_RAEPC, "RxAlignErr"),
++	MIB_DESC(1, MT7621_STATS_RCEPC, "RxCRC"),
++	MIB_DESC(1, MT7621_STATS_RUSPC, "RxUnderSize"),
++	MIB_DESC(1, MT7621_STATS_RFEPC, "RxFragment"),
++	MIB_DESC(1, MT7621_STATS_ROSPC, "RxOverSize"),
++	MIB_DESC(1, MT7621_STATS_RJEPC, "RxJabber"),
++	MIB_DESC(1, MT7621_STATS_RPPC, "RxPause"),
++	MIB_DESC(1, MT7621_STATS_RL64PC, "Rx64Byte"),
++	MIB_DESC(1, MT7621_STATS_RL65PC, "Rx65Byte"),
++	MIB_DESC(1, MT7621_STATS_RL128PC, "Rx128Byte"),
++	MIB_DESC(1, MT7621_STATS_RL256PC, "Rx256Byte"),
++	MIB_DESC(1, MT7621_STATS_RL512PC, "Rx512Byte"),
++	MIB_DESC(1, MT7621_STATS_RL1024PC, "Rx1024Byte"),
++	MIB_DESC(2, MT7621_STATS_ROC, "RxByte"),
++	MIB_DESC(1, MT7621_STATS_RDPC_CTRL, "RxCtrlDrop"),
++	MIB_DESC(1, MT7621_STATS_RDPC_ING, "RxIngDrop"),
++	MIB_DESC(1, MT7621_STATS_RDPC_ARL, "RxARLDrop")
++};
++
++enum {
++	/* Global attributes. */
++	MT7530_ATTR_ENABLE_VLAN,
++};
++
++struct mt7530_port_entry {
++	u16	pvid;
++};
++
++struct mt7530_vlan_entry {
++	u16	vid;
++	u8	member;
++	u8	etags;
++};
++
++struct mt7530_priv {
++	void __iomem		*base;
++	struct mii_bus		*bus;
++	struct switch_dev	swdev;
++
++	bool			global_vlan_enable;
++	struct mt7530_vlan_entry	vlan_entries[MT7530_NUM_VLANS];
++	struct mt7530_port_entry	port_entries[MT7530_NUM_PORTS];
++};
++
++struct mt7530_mapping {
++	char	*name;
++	u16	pvids[MT7530_NUM_PORTS];
++	u8	members[MT7530_NUM_VLANS];
++	u8	etags[MT7530_NUM_VLANS];
++	u16	vids[MT7530_NUM_VLANS];
++} mt7530_defaults[] = {
++	{
++		.name = "llllw",
++		.pvids = { 1, 1, 1, 1, 2, 1, 1 },
++		.members = { 0, 0x6f, 0x50 },
++		.etags = { 0, 0x40, 0x40 },
++		.vids = { 0, 1, 2 },
++	}, {
++		.name = "wllll",
++		.pvids = { 2, 1, 1, 1, 1, 1, 1 },
++		.members = { 0, 0x7e, 0x41 },
++		.etags = { 0, 0x40, 0x40 },
++		.vids = { 0, 1, 2 },
++	},
++};
++
++struct mt7530_mapping*
++mt7530_find_mapping(struct device_node *np)
++{
++	const char *map;
++	int i;
++
++	if (of_property_read_string(np, "mediatek,portmap", &map))
++		return NULL;
++
++	for (i = 0; i < ARRAY_SIZE(mt7530_defaults); i++)
++		if (!strcmp(map, mt7530_defaults[i].name))
++			return &mt7530_defaults[i];
++
++	return NULL;
++}
++
++static void
++mt7530_apply_mapping(struct mt7530_priv *mt7530, struct mt7530_mapping *map)
++{
++	int i = 0;
++
++	for (i = 0; i < MT7530_NUM_PORTS; i++)
++		mt7530->port_entries[i].pvid = map->pvids[i];
++
++	for (i = 0; i < MT7530_NUM_VLANS; i++) {
++		mt7530->vlan_entries[i].member = map->members[i];
++		mt7530->vlan_entries[i].etags = map->etags[i];
++		mt7530->vlan_entries[i].vid = map->vids[i];
++	}
++}
++
++static int
++mt7530_reset_switch(struct switch_dev *dev)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	int i;
++
++	memset(priv->port_entries, 0, sizeof(priv->port_entries));
++	memset(priv->vlan_entries, 0, sizeof(priv->vlan_entries));
++
++	/* set default vid of each vlan to the same number of vlan, so the vid
++	 * won't need be set explicitly.
++	 */
++	for (i = 0; i < MT7530_NUM_VLANS; i++) {
++		priv->vlan_entries[i].vid = i;
++	}
++
++	return 0;
++}
++
++static int
++mt7530_get_vlan_enable(struct switch_dev *dev,
++			   const struct switch_attr *attr,
++			   struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++
++	val->value.i = priv->global_vlan_enable;
++
++	return 0;
++}
++
++static int
++mt7530_set_vlan_enable(struct switch_dev *dev,
++			   const struct switch_attr *attr,
++			   struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++
++	priv->global_vlan_enable = val->value.i != 0;
++
++	return 0;
++}
++
++static u32
++mt7530_r32(struct mt7530_priv *priv, u32 reg)
++{
++	u32 val;
++	if (priv->bus) {
++		u16 high, low;
++
++		mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
++		low = mdiobus_read(priv->bus, 0x1f, (reg >> 2) & 0xf);
++		high = mdiobus_read(priv->bus, 0x1f, 0x10);
++
++		return (high << 16) | (low & 0xffff);
++	}
++
++	val = ioread32(priv->base + reg);
++	pr_debug("MT7530 MDIO Read [%04x]=%08x\n", reg, val);
++
++	return val;
++}
++
++static void
++mt7530_w32(struct mt7530_priv *priv, u32 reg, u32 val)
++{
++	if (priv->bus) {
++		mdiobus_write(priv->bus, 0x1f, 0x1f, (reg >> 6) & 0x3ff);
++		mdiobus_write(priv->bus, 0x1f, (reg >> 2) & 0xf,  val & 0xffff);
++		mdiobus_write(priv->bus, 0x1f, 0x10, val >> 16);
++		return;
++	}
++
++	pr_debug("MT7530 MDIO Write[%04x]=%08x\n", reg, val);
++	iowrite32(val, priv->base + reg);
++}
++
++static void
++mt7530_vtcr(struct mt7530_priv *priv, u32 cmd, u32 val)
++{
++	int i;
++
++	mt7530_w32(priv, REG_ESW_VLAN_VTCR, BIT(31) | (cmd << 12) | val);
++
++	for (i = 0; i < 20; i++) {
++		u32 val = mt7530_r32(priv, REG_ESW_VLAN_VTCR);
++
++		if ((val & BIT(31)) == 0)
++			break;
++
++		udelay(1000);
++	}
++	if (i == 20)
++		printk("mt7530: vtcr timeout\n");
++}
++
++static int
++mt7530_get_port_pvid(struct switch_dev *dev, int port, int *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++
++	if (port >= MT7530_NUM_PORTS)
++		return -EINVAL;
++
++	*val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(port));
++	*val &= 0xfff;
++
++	return 0;
++}
++
++static int
++mt7530_set_port_pvid(struct switch_dev *dev, int port, int pvid)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++
++	if (port >= MT7530_NUM_PORTS)
++		return -EINVAL;
++
++	if (pvid < MT7530_MIN_VID || pvid > MT7530_MAX_VID)
++		return -EINVAL;
++
++	priv->port_entries[port].pvid = pvid;
++
++	return 0;
++}
++
++static int
++mt7530_get_vlan_ports(struct switch_dev *dev, struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	u32 member;
++	u32 etags;
++	int i;
++
++	val->len = 0;
++
++	if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS)
++		return -EINVAL;
++
++	mt7530_vtcr(priv, 0, val->port_vlan);
++
++	member = mt7530_r32(priv, REG_ESW_VLAN_VAWD1);
++	member >>= 16;
++	member &= 0xff;
++
++	etags = mt7530_r32(priv, REG_ESW_VLAN_VAWD2);
++
++	for (i = 0; i < MT7530_NUM_PORTS; i++) {
++		struct switch_port *p;
++		int etag;
++
++		if (!(member & BIT(i)))
++			continue;
++
++		p = &val->value.ports[val->len++];
++		p->id = i;
++
++		etag = (etags >> (i * 2)) & 0x3;
++
++		if (etag == ETAG_CTRL_TAG)
++			p->flags |= BIT(SWITCH_PORT_FLAG_TAGGED);
++		else if (etag != ETAG_CTRL_UNTAG)
++			printk("vlan egress tag control neither untag nor tag.\n");
++	}
++
++	return 0;
++}
++
++static int
++mt7530_set_vlan_ports(struct switch_dev *dev, struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	u8 member = 0;
++	u8 etags = 0;
++	int i;
++
++	if (val->port_vlan < 0 || val->port_vlan >= MT7530_NUM_VLANS ||
++			val->len > MT7530_NUM_PORTS)
++		return -EINVAL;
++
++	for (i = 0; i < val->len; i++) {
++		struct switch_port *p = &val->value.ports[i];
++
++		if (p->id >= MT7530_NUM_PORTS)
++			return -EINVAL;
++
++		member |= BIT(p->id);
++
++		if (p->flags & BIT(SWITCH_PORT_FLAG_TAGGED))
++			etags |= BIT(p->id);
++	}
++	priv->vlan_entries[val->port_vlan].member = member;
++	priv->vlan_entries[val->port_vlan].etags = etags;
++
++	return 0;
++}
++
++static int
++mt7530_set_vid(struct switch_dev *dev, const struct switch_attr *attr,
++		struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	int vlan;
++	u16 vid;
++
++	vlan = val->port_vlan;
++	vid = (u16)val->value.i;
++
++	if (vlan < 0 || vlan >= MT7530_NUM_VLANS)
++		return -EINVAL;
++
++	if (vid < MT7530_MIN_VID || vid > MT7530_MAX_VID)
++		return -EINVAL;
++
++	priv->vlan_entries[vlan].vid = vid;
++	return 0;
++}
++
++static int
++mt7530_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
++		struct switch_val *val)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	u32 vid;
++	int vlan;
++
++	vlan = val->port_vlan;
++
++	vid = mt7530_r32(priv, REG_ESW_VLAN_VTIM(vlan));
++	if (vlan & 1)
++		vid = vid >> 12;
++	vid &= 0xfff;
++
++	val->value.i = vid;
++	return 0;
++}
++
++static int
++mt7530_apply_config(struct switch_dev *dev)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	int i, j;
++	u8 tag_ports;
++	u8 untag_ports;
++
++	if (!priv->global_vlan_enable) {
++		for (i = 0; i < MT7530_NUM_PORTS; i++)
++			mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00ff0000);
++
++		for (i = 0; i < MT7530_NUM_PORTS; i++)
++			mt7530_w32(priv, REG_ESW_PORT_PVC(i), 0x810000c0);
++
++		return 0;
++	}
++
++	/* set all ports as security mode */
++	for (i = 0; i < MT7530_NUM_PORTS; i++)
++		mt7530_w32(priv, REG_ESW_PORT_PCR(i), 0x00ff0003);
++
++	/* check if a port is used in tag/untag vlan egress mode */
++	tag_ports = 0;
++	untag_ports = 0;
++
++	for (i = 0; i < MT7530_NUM_VLANS; i++) {
++		u8 member = priv->vlan_entries[i].member;
++		u8 etags = priv->vlan_entries[i].etags;
++
++		if (!member)
++			continue;
++
++		for (j = 0; j < MT7530_NUM_PORTS; j++) {
++			if (!(member & BIT(j)))
++				continue;
++
++			if (etags & BIT(j))
++				tag_ports |= 1u << j;
++			else
++				untag_ports |= 1u << j;
++		}
++	}
++
++	/* set all untag-only ports as transparent and the rest as user port */
++	for (i = 0; i < MT7530_NUM_PORTS; i++) {
++		u32 pvc_mode = 0x81000000;
++
++		if (untag_ports & BIT(i) && !(tag_ports & BIT(i)))
++			pvc_mode = 0x810000c0;
++
++		mt7530_w32(priv, REG_ESW_PORT_PVC(i), pvc_mode);
++	}
++
++	for (i = 0; i < MT7530_NUM_VLANS; i++) {
++		u16 vid = priv->vlan_entries[i].vid;
++		u8 member = priv->vlan_entries[i].member;
++		u8 etags = priv->vlan_entries[i].etags;
++		u32 val;
++
++		/* vid of vlan */
++		val = mt7530_r32(priv, REG_ESW_VLAN_VTIM(i));
++		if (i % 2 == 0) {
++			val &= 0xfff000;
++			val |= vid;
++		} else {
++			val &= 0xfff;
++			val |= (vid << 12);
++		}
++		mt7530_w32(priv, REG_ESW_VLAN_VTIM(i), val);
++
++		/* vlan port membership */
++		if (member)
++			mt7530_w32(priv, REG_ESW_VLAN_VAWD1, REG_ESW_VLAN_VAWD1_IVL_MAC |
++				REG_ESW_VLAN_VAWD1_VTAG_EN | (member << 16) |
++				REG_ESW_VLAN_VAWD1_VALID);
++		else
++			mt7530_w32(priv, REG_ESW_VLAN_VAWD1, 0);
++
++		/* egress mode */
++		val = 0;
++		for (j = 0; j < MT7530_NUM_PORTS; j++) {
++			if (etags & BIT(j))
++				val |= ETAG_CTRL_TAG << (j * 2);
++			else
++				val |= ETAG_CTRL_UNTAG << (j * 2);
++		}
++		mt7530_w32(priv, REG_ESW_VLAN_VAWD2, val);
++
++		/* write to vlan table */
++		mt7530_vtcr(priv, 1, i);
++	}
++
++	/* Port Default PVID */
++	for (i = 0; i < MT7530_NUM_PORTS; i++) {
++		u32 val;
++		val = mt7530_r32(priv, REG_ESW_PORT_PPBV1(i));
++		val &= ~0xfff;
++		val |= priv->port_entries[i].pvid;
++		mt7530_w32(priv, REG_ESW_PORT_PPBV1(i), val);
++	}
++
++	return 0;
++}
++
++static int
++mt7530_get_port_link(struct switch_dev *dev,  int port,
++			struct switch_port_link *link)
++{
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	u32 speed, pmsr;
++
++	if (port < 0 || port >= MT7530_NUM_PORTS)
++		return -EINVAL;
++
++	pmsr = mt7530_r32(priv, 0x3008 + (0x100 * port));
++
++	link->link = pmsr & 1;
++	link->duplex = (pmsr >> 1) & 1;
++	speed = (pmsr >> 2) & 3;
++
++	switch (speed) {
++	case 0:
++		link->speed = SWITCH_PORT_SPEED_10;
++		break;
++	case 1:
++		link->speed = SWITCH_PORT_SPEED_100;
++		break;
++	case 2:
++	case 3: /* forced gige speed can be 2 or 3 */
++		link->speed = SWITCH_PORT_SPEED_1000;
++		break;
++	default:
++		link->speed = SWITCH_PORT_SPEED_UNKNOWN;
++		break;
++	}
++
++	return 0;
++}
++
++static const struct switch_attr mt7530_global[] = {
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "enable_vlan",
++		.description = "VLAN mode (1:enabled)",
++		.max = 1,
++		.id = MT7530_ATTR_ENABLE_VLAN,
++		.get = mt7530_get_vlan_enable,
++		.set = mt7530_set_vlan_enable,
++	},
++};
++
++static u64 get_mib_counter(struct mt7530_priv *priv, int i, int port)
++{
++	unsigned int port_base;
++	u64 t;
++
++	port_base = MT7621_MIB_COUNTER_BASE +
++		    MT7621_MIB_COUNTER_PORT_OFFSET * port;
++
++	t = mt7530_r32(priv, port_base + mt7621_mibs[i].offset);
++	if (mt7621_mibs[i].size == 2) {
++		u64 hi;
++
++		hi = mt7530_r32(priv, port_base + mt7621_mibs[i].offset + 4);
++		t |= hi << 32;
++	}
++
++	return t;
++}
++
++static int mt7621_sw_get_port_mib(struct switch_dev *dev,
++				  const struct switch_attr *attr,
++				  struct switch_val *val)
++{
++	static char buf[4096];
++	struct mt7530_priv *priv = container_of(dev, struct mt7530_priv, swdev);
++	int i, len = 0;
++
++	if (val->port_vlan >= MT7530_NUM_PORTS)
++		return -EINVAL;
++
++	len += snprintf(buf + len, sizeof(buf) - len,
++			"Port %d MIB counters\n", val->port_vlan);
++
++	for (i = 0; i < sizeof(mt7621_mibs) / sizeof(*mt7621_mibs); ++i) {
++		u64 counter;
++		len += snprintf(buf + len, sizeof(buf) - len,
++				"%-11s: ", mt7621_mibs[i].name);
++		counter = get_mib_counter(priv, i, val->port_vlan);
++		len += snprintf(buf + len, sizeof(buf) - len, "%llu\n",
++				counter);
++	}
++
++	val->value.s = buf;
++	val->len = len;
++	return 0;
++}
++
++static const struct switch_attr mt7621_port[] = {
++	{
++		.type = SWITCH_TYPE_STRING,
++		.name = "mib",
++		.description = "Get MIB counters for port",
++		.get = mt7621_sw_get_port_mib,
++		.set = NULL,
++	},
++};
++
++static const struct switch_attr mt7530_port[] = {
++};
++
++static const struct switch_attr mt7530_vlan[] = {
++	{
++		.type = SWITCH_TYPE_INT,
++		.name = "vid",
++		.description = "VLAN ID (0-4094)",
++		.set = mt7530_set_vid,
++		.get = mt7530_get_vid,
++		.max = 4094,
++	},
++};
++
++static const struct switch_dev_ops mt7621_ops = {
++	.attr_global = {
++		.attr = mt7530_global,
++		.n_attr = ARRAY_SIZE(mt7530_global),
++	},
++	.attr_port = {
++		.attr = mt7621_port,
++		.n_attr = ARRAY_SIZE(mt7621_port),
++	},
++	.attr_vlan = {
++		.attr = mt7530_vlan,
++		.n_attr = ARRAY_SIZE(mt7530_vlan),
++	},
++	.get_vlan_ports = mt7530_get_vlan_ports,
++	.set_vlan_ports = mt7530_set_vlan_ports,
++	.get_port_pvid = mt7530_get_port_pvid,
++	.set_port_pvid = mt7530_set_port_pvid,
++	.get_port_link = mt7530_get_port_link,
++	.apply_config = mt7530_apply_config,
++	.reset_switch = mt7530_reset_switch,
++};
++
++static const struct switch_dev_ops mt7530_ops = {
++	.attr_global = {
++		.attr = mt7530_global,
++		.n_attr = ARRAY_SIZE(mt7530_global),
++	},
++	.attr_port = {
++		.attr = mt7530_port,
++		.n_attr = ARRAY_SIZE(mt7530_port),
++	},
++	.attr_vlan = {
++		.attr = mt7530_vlan,
++		.n_attr = ARRAY_SIZE(mt7530_vlan),
++	},
++	.get_vlan_ports = mt7530_get_vlan_ports,
++	.set_vlan_ports = mt7530_set_vlan_ports,
++	.get_port_pvid = mt7530_get_port_pvid,
++	.set_port_pvid = mt7530_set_port_pvid,
++	.get_port_link = mt7530_get_port_link,
++	.apply_config = mt7530_apply_config,
++	.reset_switch = mt7530_reset_switch,
++};
++
++int
++mt7530_probe(struct device *dev, void __iomem *base, struct mii_bus *bus, int vlan)
++{
++	struct switch_dev *swdev;
++	struct mt7530_priv *mt7530;
++	struct mt7530_mapping *map;
++	int ret;
++
++	mt7530 = devm_kzalloc(dev, sizeof(struct mt7530_priv), GFP_KERNEL);
++	if (!mt7530)
++		return -ENOMEM;
++
++	mt7530->base = base;
++	mt7530->bus = bus;
++	mt7530->global_vlan_enable = vlan;
++
++	swdev = &mt7530->swdev;
++	if (bus) {
++		swdev->alias = "mt7530";
++		swdev->name = "mt7530";
++	} else if (IS_ENABLED(CONFIG_SOC_MT7621)) {
++		swdev->alias = "mt7621";
++		swdev->name = "mt7621";
++	} else {
++		swdev->alias = "mt7620";
++		swdev->name = "mt7620";
++	}
++	swdev->cpu_port = MT7530_CPU_PORT;
++	swdev->ports = MT7530_NUM_PORTS;
++	swdev->vlans = MT7530_NUM_VLANS;
++	if (IS_ENABLED(CONFIG_SOC_MT7621))
++		swdev->ops = &mt7621_ops;
++	else
++		swdev->ops = &mt7530_ops;
++
++	ret = register_switch(swdev, NULL);
++	if (ret) {
++		dev_err(dev, "failed to register mt7530\n");
++		return ret;
++	}
++
++
++	map = mt7530_find_mapping(dev->of_node);
++	if (map)
++		mt7530_apply_mapping(mt7530, map);
++	mt7530_apply_config(swdev);
++
++	/* magic vodoo */
++	if (!IS_ENABLED(CONFIG_SOC_MT7621) && bus && mt7530_r32(mt7530, REG_HWTRAP) !=  0x1117edf) {
++	        dev_info(dev, "fixing up MHWTRAP register - bootloader probably played with it\n");
++		mt7530_w32(mt7530, REG_HWTRAP, 0x1117edf);
++	}
++	dev_info(dev, "loaded %s driver\n", swdev->name);
++
++	return 0;
++}
+--- /dev/null
++++ b/drivers/net/ethernet/mediatek/mt7530.h
+@@ -0,0 +1,20 @@
++/*
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2
++ * of the License, or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ *
++ * Copyright (C) 2013 John Crispin <[email protected]>
++ */
++
++#ifndef _MT7530_H__
++#define _MT7530_H__
++
++int mt7530_probe(struct device *dev, void __iomem *base, struct mii_bus *bus, int vlan);
++
++#endif
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1308,8 +1308,13 @@ static int __init fe_init(struct net_dev
+ 	}
+ 
+ 	err = fe_hw_init(dev);
+-	if (!err)
+-		return 0;
++	if (err)
++		goto err_phy_disconnect;
++
++	if ((priv->flags & FE_FLAG_HAS_SWITCH) && priv->soc->switch_config)
++		priv->soc->switch_config(priv);
++
++	return 0;
+ 
+ err_phy_disconnect:
+ 	if (priv->phy)
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+@@ -383,6 +383,7 @@ struct fe_soc_data {
+ 	int (*fwd_config)(struct fe_priv *priv);
+ 	void (*tx_dma)(struct fe_tx_dma *txd);
+ 	int (*switch_init)(struct fe_priv *priv);
++	int (*switch_config)(struct fe_priv *priv);
+ 	void (*port_init)(struct fe_priv *priv, struct device_node *port);
+ 	int (*has_carrier)(struct fe_priv *priv);
+ 	int (*mdio_init)(struct fe_priv *priv);
+--- a/drivers/net/ethernet/mediatek/soc_mt7620.c
++++ b/drivers/net/ethernet/mediatek/soc_mt7620.c
+@@ -313,6 +313,7 @@ static struct fe_soc_data mt7620_data =
+ 	.fwd_config = mt7620_fwd_config,
+ 	.tx_dma = mt7620_tx_dma,
+ 	.switch_init = mtk_gsw_init,
++	.switch_config = mt7620_gsw_config,
+ 	.port_init = mt7620_port_init,
+ 	.reg_table = mt7620_reg_table,
+ 	.pdma_glo_cfg = FE_PDMA_SIZE_16DWORDS,

target/linux/ramips/patches-4.4/0514-net-mediatek-fix_esw.patch

@@ -0,0 +1,48 @@
+--- a/drivers/net/ethernet/mediatek/esw_rt3050.c
++++ b/drivers/net/ethernet/mediatek/esw_rt3050.c
+@@ -16,6 +16,7 @@
+ #include <linux/kernel.h>
+ #include <linux/platform_device.h>
+ #include <asm/mach-ralink/ralink_regs.h>
++#include <linux/of_irq.h>
+ 
+ #include <linux/switch.h>
+ 
+@@ -1332,7 +1333,6 @@ static int esw_probe(struct platform_dev
+ 	const __be32 *port_map, *reg_init;
+ 	struct switch_dev *swdev;
+ 	struct rt305x_esw *esw;
+-	struct resource *irq;
+ 	int ret;
+ 
+ 	esw = devm_kzalloc(&pdev->dev, sizeof(*esw), GFP_KERNEL);
+@@ -1340,7 +1340,7 @@ static int esw_probe(struct platform_dev
+ 		return -ENOMEM;
+ 
+ 	esw->dev = &pdev->dev;
+-	esw->irq = irq->start;
++	esw->irq = irq_of_parse_and_map(np, 0);
+ 	esw->base = devm_ioremap_resource(&pdev->dev, res);
+ 	if (!esw->base)
+ 		return -EADDRNOTAVAIL;
+@@ -1365,7 +1365,7 @@ static int esw_probe(struct platform_dev
+ 	ret = register_switch(swdev, NULL);
+ 	if (ret < 0) {
+ 		dev_err(&pdev->dev, "register_switch failed\n");
+-		goto unmap_base;
++		return ret;
+ 	}
+ 
+ 	platform_set_drvdata(pdev, esw);
+@@ -1383,11 +1383,6 @@ static int esw_probe(struct platform_dev
+ 	}
+ 
+ 	return ret;
+-
+-unmap_base:
+-	iounmap(esw->base);
+-	kfree(esw);
+-	return ret;
+ }
+ 
+ static int esw_remove(struct platform_device *pdev)

target/linux/ramips/patches-4.4/0601-net-mediatke-add-phy_ethtool_ioctl-support.patch

@@ -0,0 +1,22 @@
+From 3c550ae0359be5bc4d5daa86a62f711a91ac8dde Mon Sep 17 00:00:00 2001
+From: John Crispin <[email protected]>
+Date: Sun, 13 Dec 2015 17:46:09 +0100
+Subject: [PATCH 2/2] net:mediatke: add phy_ethtool_ioctl() support
+
+Signed-off-by: John Crispin <[email protected]>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c |    3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1344,6 +1344,9 @@ static int fe_do_ioctl(struct net_device
+ 		return -ENODEV;
+ 
+ 	switch (cmd) {
++	case SIOCETHTOOL:
++		return phy_ethtool_ioctl(priv->phy_dev,
++				(void *) ifr->ifr_data);
+ 	case SIOCGMIIPHY:
+ 	case SIOCGMIIREG:
+ 	case SIOCSMIIREG:

target/linux/ramips/patches-4.4/0901-spansion_nand_id_fix.patch

@@ -0,0 +1,43 @@
+From 8b61a1a33e41456ebeafa0ebe7ec0fccf859861e Mon Sep 17 00:00:00 2001
+From: Nikolay Martynov <[email protected]>
+Date: Wed, 25 Nov 2015 20:43:46 -0500
+Subject: [PATCH] mtd: nand: Fix Spansion sparearea size detection
+
+According to datasheet S34ML02G2 and S34ML04G2 have
+larger sparea area size than was detected.
+
+Signed-off-by: Nikolay Martynov <[email protected]>
+---
+ drivers/mtd/nand/nand_base.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/drivers/mtd/nand/nand_base.c
++++ b/drivers/mtd/nand/nand_base.c
+@@ -3568,6 +3568,7 @@ static void nand_decode_ext_id(struct mt
+ 	/*
+ 	 * Field definitions are in the following datasheets:
+ 	 * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
++	 *                          Spansion S34ML02G2 (p.33)
+ 	 * New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44)
+ 	 * Hynix MLC   (6 byte ID): Hynix H27UBG8T2B (p.22)
+ 	 *
+@@ -3665,6 +3666,19 @@ static void nand_decode_ext_id(struct mt
+ 		*busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
+ 
+ 		/*
++		 * Spansion S34ML0[24]G2 have oobsize twice as large
++		 * as S34ML01G2 encoded in the same bit. We
++		 * differinciate them by their ID length
++		 */
++		if (id_data[0] == NAND_MFR_AMD
++		    		&& (id_data[1] == 0xda
++				 || id_data[1] == 0xdc
++				 || id_data[1] == 0xca
++				 || id_data[1] == 0xcc)) {
++			mtd->oobsize *= 2;
++		}
++
++		/*
+ 		 * Toshiba 24nm raw SLC (i.e., not BENAND) have 32B OOB per
+ 		 * 512B page. For Toshiba SLC, we decode the 5th/6th byte as
+ 		 * follows: