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- From: Michael Barkowski <[email protected]>
- Date: Fri, 11 May 2007 23:24:51 +0000 (-0500)
- Subject: phylib: add the ICPlus IP175C PHY driver
- X-Git-Tag: v2.6.23-rc1~1201^2~58
- X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=0cefeebaf3da39d768bffcf62460fe2088e824ef
- phylib: add the ICPlus IP175C PHY driver
- The ICPlus IP175C sports a 100Mbit/s 4-port switch in addition
- to a dedicated 100Mbit/s WAN port.
- Signed-off-by: Michael Barkowski <[email protected]>
- Signed-off-by: Kim Phillips <[email protected]>
- Signed-off-by: Jeff Garzik <[email protected]>
- ---
- --- a/drivers/net/phy/Kconfig
- +++ b/drivers/net/phy/Kconfig
- @@ -55,6 +55,11 @@
- ---help---
- Currently supports the BCM5411, BCM5421 and BCM5461 PHYs.
-
- +config ICPLUS_PHY
- + tristate "Drivers for ICPlus PHYs"
- + ---help---
- + Currently supports the IP175C PHY.
- +
- config FIXED_PHY
- tristate "Drivers for PHY emulation on fixed speed/link"
- ---help---
- --- a/drivers/net/phy/Makefile
- +++ b/drivers/net/phy/Makefile
- @@ -11,4 +11,5 @@
- obj-$(CONFIG_SMSC_PHY) += smsc.o
- obj-$(CONFIG_VITESSE_PHY) += vitesse.o
- obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
- +obj-$(CONFIG_ICPLUS_PHY) += icplus.o
- obj-$(CONFIG_FIXED_PHY) += fixed.o
- --- /dev/null
- +++ b/drivers/net/phy/icplus.c
- @@ -0,0 +1,134 @@
- +/*
- + * Driver for ICPlus PHYs
- + *
- + * Copyright (c) 2007 Freescale Semiconductor, Inc.
- + *
- + * 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.
- + *
- + */
- +#include <linux/kernel.h>
- +#include <linux/string.h>
- +#include <linux/errno.h>
- +#include <linux/unistd.h>
- +#include <linux/slab.h>
- +#include <linux/interrupt.h>
- +#include <linux/init.h>
- +#include <linux/delay.h>
- +#include <linux/netdevice.h>
- +#include <linux/etherdevice.h>
- +#include <linux/skbuff.h>
- +#include <linux/spinlock.h>
- +#include <linux/mm.h>
- +#include <linux/module.h>
- +#include <linux/mii.h>
- +#include <linux/ethtool.h>
- +#include <linux/phy.h>
- +
- +#include <asm/io.h>
- +#include <asm/irq.h>
- +#include <asm/uaccess.h>
- +
- +MODULE_DESCRIPTION("ICPlus IP175C PHY driver");
- +MODULE_AUTHOR("Michael Barkowski");
- +MODULE_LICENSE("GPL");
- +
- +static int ip175c_config_init(struct phy_device *phydev)
- +{
- + int err, i;
- + static int full_reset_performed = 0;
- +
- + if (full_reset_performed == 0) {
- +
- + /* master reset */
- + err = phydev->bus->write(phydev->bus, 30, 0, 0x175c);
- + if (err < 0)
- + return err;
- +
- + /* ensure no bus delays overlap reset period */
- + err = phydev->bus->read(phydev->bus, 30, 0);
- +
- + /* data sheet specifies reset period is 2 msec */
- + mdelay(2);
- +
- + /* enable IP175C mode */
- + err = phydev->bus->write(phydev->bus, 29, 31, 0x175c);
- + if (err < 0)
- + return err;
- +
- + /* Set MII0 speed and duplex (in PHY mode) */
- + err = phydev->bus->write(phydev->bus, 29, 22, 0x420);
- + if (err < 0)
- + return err;
- +
- + /* reset switch ports */
- + for (i = 0; i < 5; i++) {
- + err = phydev->bus->write(phydev->bus, i,
- + MII_BMCR, BMCR_RESET);
- + if (err < 0)
- + return err;
- + }
- +
- + for (i = 0; i < 5; i++)
- + err = phydev->bus->read(phydev->bus, i, MII_BMCR);
- +
- + mdelay(2);
- +
- + full_reset_performed = 1;
- + }
- +
- + if (phydev->addr != 4) {
- + phydev->state = PHY_RUNNING;
- + phydev->speed = SPEED_100;
- + phydev->duplex = DUPLEX_FULL;
- + phydev->link = 1;
- + netif_carrier_on(phydev->attached_dev);
- + }
- +
- + return 0;
- +}
- +
- +static int ip175c_read_status(struct phy_device *phydev)
- +{
- + if (phydev->addr == 4) /* WAN port */
- + genphy_read_status(phydev);
- + else
- + /* Don't need to read status for switch ports */
- + phydev->irq = PHY_IGNORE_INTERRUPT;
- +
- + return 0;
- +}
- +
- +static int ip175c_config_aneg(struct phy_device *phydev)
- +{
- + if (phydev->addr == 4) /* WAN port */
- + genphy_config_aneg(phydev);
- +
- + return 0;
- +}
- +
- +static struct phy_driver ip175c_driver = {
- + .phy_id = 0x02430d80,
- + .name = "ICPlus IP175C",
- + .phy_id_mask = 0x0ffffff0,
- + .features = PHY_BASIC_FEATURES,
- + .config_init = &ip175c_config_init,
- + .config_aneg = &ip175c_config_aneg,
- + .read_status = &ip175c_read_status,
- + .driver = { .owner = THIS_MODULE,},
- +};
- +
- +static int __init ip175c_init(void)
- +{
- + return phy_driver_register(&ip175c_driver);
- +}
- +
- +static void __exit ip175c_exit(void)
- +{
- + phy_driver_unregister(&ip175c_driver);
- +}
- +
- +module_init(ip175c_init);
- +module_exit(ip175c_exit);
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