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+From 636a1e697555e73c28cdd6952a409edbfdd16475 Mon Sep 17 00:00:00 2001
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+From: Chris Blake <[email protected]>
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+Date: Mon, 9 Aug 2021 19:40:21 -0500
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+Subject: platform/x86: add meraki-mx100 platform driver
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+
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+This adds platform support for the Cisco Meraki MX100 (Tinkerbell)
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+network appliance. This sets up the network LEDs and Reset
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+button.
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+
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+Depends-on: ef0eea5b151ae ("mfd: lpc_ich: Enable GPIO driver for DH89xxCC")
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+Co-developed-by: Christian Lamparter <[email protected]>
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+Signed-off-by: Christian Lamparter <[email protected]>
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+Signed-off-by: Chris Blake <[email protected]>
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+Reviewed-by: Andy Shevchenko <[email protected]>
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+Link: https://lore.kernel.org/r/[email protected]
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+Reviewed-by: Hans de Goede <[email protected]>
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+Signed-off-by: Hans de Goede <[email protected]>
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+---
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+ drivers/platform/x86/Kconfig | 13 ++
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+ drivers/platform/x86/Makefile | 3 +
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+ drivers/platform/x86/meraki-mx100.c | 230 ++++++++++++++++++++++++++++++++++++
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+ 3 files changed, 246 insertions(+)
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+ create mode 100644 drivers/platform/x86/meraki-mx100.c
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+
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+diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
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+index 6ad35158ae4ef..432d72170b003 100644
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+--- a/drivers/platform/x86/Kconfig
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++++ b/drivers/platform/x86/Kconfig
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+@@ -302,6 +302,19 @@ config ASUS_NB_WMI
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+ If you have an ACPI-WMI compatible Asus Notebook, say Y or M
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+ here.
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+
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++config MERAKI_MX100
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++ tristate "Cisco Meraki MX100 Platform Driver"
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++ depends on GPIOLIB
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++ depends on GPIO_ICH
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++ depends on LEDS_CLASS
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++ select LEDS_GPIO
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++ help
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++ This driver provides support for the front button and LEDs on
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++ the Cisco Meraki MX100 (Tinkerbell) 1U appliance.
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++
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++ To compile this driver as a module, choose M here: the module
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++ will be called meraki-mx100.
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++
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+ config EEEPC_LAPTOP
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+ tristate "Eee PC Hotkey Driver"
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+ depends on ACPI
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+diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
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+index 5edfdc2ea7f29..9bb3c3f773864 100644
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+--- a/drivers/platform/x86/Makefile
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++++ b/drivers/platform/x86/Makefile
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+@@ -39,6 +39,9 @@ obj-$(CONFIG_ASUS_NB_WMI) += asus-nb-wmi.o
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+ obj-$(CONFIG_EEEPC_LAPTOP) += eeepc-laptop.o
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+ obj-$(CONFIG_EEEPC_WMI) += eeepc-wmi.o
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+
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++# Cisco/Meraki
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++obj-$(CONFIG_MERAKI_MX100) += meraki-mx100.o
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++
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+ # Dell
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+ obj-$(CONFIG_X86_PLATFORM_DRIVERS_DELL) += dell/
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+
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+diff --git a/drivers/platform/x86/meraki-mx100.c b/drivers/platform/x86/meraki-mx100.c
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+new file mode 100644
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+index 0000000000000..3751ed36a980a
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+--- /dev/null
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++++ b/drivers/platform/x86/meraki-mx100.c
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+@@ -0,0 +1,230 @@
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++// SPDX-License-Identifier: GPL-2.0+
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++
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++/*
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++ * Cisco Meraki MX100 (Tinkerbell) board platform driver
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++ *
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++ * Based off of arch/x86/platform/meraki/tink.c from the
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++ * Meraki GPL release meraki-firmware-sources-r23-20150601
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++ *
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++ * Format inspired by platform/x86/pcengines-apuv2.c
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++ *
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++ * Copyright (C) 2021 Chris Blake <[email protected]>
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++ */
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++
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++#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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++
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++#include <linux/dmi.h>
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++#include <linux/err.h>
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++#include <linux/gpio_keys.h>
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++#include <linux/gpio/machine.h>
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++#include <linux/input.h>
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++#include <linux/io.h>
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++#include <linux/kernel.h>
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++#include <linux/leds.h>
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++#include <linux/module.h>
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++#include <linux/platform_device.h>
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++
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++#define TINK_GPIO_DRIVER_NAME "gpio_ich"
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++
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++/* LEDs */
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++static const struct gpio_led tink_leds[] = {
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++ {
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++ .name = "mx100:green:internet",
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++ .default_trigger = "default-on",
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++ },
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++ {
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++ .name = "mx100:green:lan2",
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++ },
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++ {
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++ .name = "mx100:green:lan3",
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++ },
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++ {
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++ .name = "mx100:green:lan4",
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++ },
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++ {
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++ .name = "mx100:green:lan5",
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++ },
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++ {
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++ .name = "mx100:green:lan6",
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++ },
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++ {
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++ .name = "mx100:green:lan7",
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++ },
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++ {
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++ .name = "mx100:green:lan8",
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++ },
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++ {
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++ .name = "mx100:green:lan9",
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++ },
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++ {
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++ .name = "mx100:green:lan10",
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++ },
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++ {
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++ .name = "mx100:green:lan11",
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++ },
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++ {
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++ .name = "mx100:green:ha",
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++ },
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++ {
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++ .name = "mx100:orange:ha",
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++ },
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++ {
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++ .name = "mx100:green:usb",
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++ },
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++ {
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++ .name = "mx100:orange:usb",
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++ },
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++};
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++
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++static const struct gpio_led_platform_data tink_leds_pdata = {
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++ .num_leds = ARRAY_SIZE(tink_leds),
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++ .leds = tink_leds,
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++};
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++
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++static struct gpiod_lookup_table tink_leds_table = {
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++ .dev_id = "leds-gpio",
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++ .table = {
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 11,
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++ NULL, 0, GPIO_ACTIVE_LOW),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 18,
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++ NULL, 1, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 20,
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++ NULL, 2, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 22,
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++ NULL, 3, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 23,
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++ NULL, 4, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 32,
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++ NULL, 5, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 34,
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++ NULL, 6, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 35,
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++ NULL, 7, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 36,
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++ NULL, 8, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 37,
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++ NULL, 9, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 48,
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++ NULL, 10, GPIO_ACTIVE_HIGH),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 16,
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++ NULL, 11, GPIO_ACTIVE_LOW),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 7,
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++ NULL, 12, GPIO_ACTIVE_LOW),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 21,
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++ NULL, 13, GPIO_ACTIVE_LOW),
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 19,
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++ NULL, 14, GPIO_ACTIVE_LOW),
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++ {} /* Terminating entry */
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++ }
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++};
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++
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++/* Reset Button */
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++static struct gpio_keys_button tink_buttons[] = {
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++ {
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++ .desc = "Reset",
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++ .type = EV_KEY,
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++ .code = KEY_RESTART,
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++ .active_low = 1,
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++ .debounce_interval = 100,
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++ },
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++};
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++
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++static const struct gpio_keys_platform_data tink_buttons_pdata = {
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++ .buttons = tink_buttons,
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++ .nbuttons = ARRAY_SIZE(tink_buttons),
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++ .poll_interval = 20,
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++ .rep = 0,
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++ .name = "mx100-keys",
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++};
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++
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++static struct gpiod_lookup_table tink_keys_table = {
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++ .dev_id = "gpio-keys-polled",
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++ .table = {
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++ GPIO_LOOKUP_IDX(TINK_GPIO_DRIVER_NAME, 60,
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++ NULL, 0, GPIO_ACTIVE_LOW),
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++ {} /* Terminating entry */
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++ }
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++};
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++
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++/* Board setup */
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++static const struct dmi_system_id tink_systems[] __initconst = {
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++ {
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++ .matches = {
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++ DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Cisco"),
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++ DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MX100-HW"),
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++ },
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++ },
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++ {} /* Terminating entry */
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++};
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++MODULE_DEVICE_TABLE(dmi, tink_systems);
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++
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++static struct platform_device *tink_leds_pdev;
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++static struct platform_device *tink_keys_pdev;
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++
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++static struct platform_device * __init tink_create_dev(
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++ const char *name, const void *pdata, size_t sz)
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++{
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++ struct platform_device *pdev;
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++
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++ pdev = platform_device_register_data(NULL,
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++ name, PLATFORM_DEVID_NONE, pdata, sz);
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++ if (IS_ERR(pdev))
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++ pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev));
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++
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++ return pdev;
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++}
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++
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++static int __init tink_board_init(void)
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++{
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++ int ret;
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++
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++ if (!dmi_first_match(tink_systems))
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++ return -ENODEV;
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++
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++ /*
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++ * We need to make sure that GPIO60 isn't set to native mode as is default since it's our
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++ * Reset Button. To do this, write to GPIO_USE_SEL2 to have GPIO60 set to GPIO mode.
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++ * This is documented on page 1609 of the PCH datasheet, order number 327879-005US
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++ */
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++ outl(inl(0x530) | BIT(28), 0x530);
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++
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++ gpiod_add_lookup_table(&tink_leds_table);
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++ gpiod_add_lookup_table(&tink_keys_table);
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++
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++ tink_leds_pdev = tink_create_dev("leds-gpio",
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++ &tink_leds_pdata, sizeof(tink_leds_pdata));
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++ if (IS_ERR(tink_leds_pdev)) {
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++ ret = PTR_ERR(tink_leds_pdev);
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++ goto err;
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++ }
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++
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++ tink_keys_pdev = tink_create_dev("gpio-keys-polled",
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++ &tink_buttons_pdata, sizeof(tink_buttons_pdata));
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++ if (IS_ERR(tink_keys_pdev)) {
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++ ret = PTR_ERR(tink_keys_pdev);
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++ platform_device_unregister(tink_leds_pdev);
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++ goto err;
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++ }
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++
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++ return 0;
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++
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++err:
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++ gpiod_remove_lookup_table(&tink_keys_table);
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++ gpiod_remove_lookup_table(&tink_leds_table);
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++ return ret;
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++}
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++module_init(tink_board_init);
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++
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++static void __exit tink_board_exit(void)
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++{
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++ platform_device_unregister(tink_keys_pdev);
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++ platform_device_unregister(tink_leds_pdev);
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++ gpiod_remove_lookup_table(&tink_keys_table);
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++ gpiod_remove_lookup_table(&tink_leds_table);
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++}
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++module_exit(tink_board_exit);
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++
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++MODULE_AUTHOR("Chris Blake <[email protected]>");
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++MODULE_DESCRIPTION("Cisco Meraki MX100 Platform Driver");
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++MODULE_LICENSE("GPL");
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++MODULE_ALIAS("platform:meraki-mx100");
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+--
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+cgit 1.2.3-1.el7
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Chris Blake