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Commit 0cefeeba authored by Michael Barkowski's avatar Michael Barkowski Committed by Jeff Garzik
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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: default avatarMichael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: default avatarKim Phillips <kim.phillips@freescale.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 146bd683

drivers/net/phy/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -55,6 +55,11 @@ config BROADCOM_PHY 
	---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---

drivers/net/phy/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -11,4 +11,5 @@ obj-$(CONFIG_QSEMI_PHY) += qsemi.o 
obj-$(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

drivers/net/phy/icplus.c

0 → 100644
+134 −0
Original line number Diff line number Diff line 
/*

 * 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);