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Commit dbb7a95d authored by Chaithrika U S's avatar Chaithrika U S Committed by David S. Miller
Browse files

phy: Add LSI ET1011C PHY driver 



Adds LSI ET1011C PHY driver. 
This driver is used by TI DM646x EVM.

Signed-off-by: default avatarChaithrika U S <chaithrika@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e19caae7

drivers/net/phy/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -77,6 +77,11 @@ config STE10XP 
	---help---

	  This is the driver for the STe100p and STe101p PHYs.



config LSI_ET1011C_PHY

	tristate "Driver for LSI ET1011C PHY"

	---help---

	  Supports the LSI ET1011C PHY.



config FIXED_PHY

	bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"

	depends on PHYLIB=y

drivers/net/phy/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ obj-$(CONFIG_VITESSE_PHY) += vitesse.o 
obj-$(CONFIG_BROADCOM_PHY)	+= broadcom.o

obj-$(CONFIG_ICPLUS_PHY)	+= icplus.o

obj-$(CONFIG_REALTEK_PHY)	+= realtek.o

obj-$(CONFIG_LSI_ET1011C_PHY)	+= et1011c.o

obj-$(CONFIG_FIXED_PHY)		+= fixed.o

obj-$(CONFIG_MDIO_BITBANG)	+= mdio-bitbang.o

obj-$(CONFIG_MDIO_GPIO)		+= mdio-gpio.o

drivers/net/phy/et1011c.c

0 → 100644
+113 −0
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/*

 * drivers/net/phy/et1011c.c

 *

 * Driver for LSI ET1011C PHYs

 *

 * Author: Chaithrika U S

 *

 * Copyright (c) 2008 Texas Instruments

 *

 * 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 <linux/io.h>

#include <linux/uaccess.h>

#include <asm/irq.h>



#define ET1011C_STATUS_REG	(0x1A)

#define ET1011C_CONFIG_REG	(0x16)

#define ET1011C_SPEED_MASK		(0x0300)

#define ET1011C_GIGABIT_SPEED		(0x0200)

#define ET1011C_TX_FIFO_MASK		(0x3000)

#define ET1011C_TX_FIFO_DEPTH_8		(0x0000)

#define ET1011C_TX_FIFO_DEPTH_16	(0x1000)

#define ET1011C_INTERFACE_MASK		(0x0007)

#define ET1011C_GMII_INTERFACE		(0x0002)

#define ET1011C_SYS_CLK_EN		(0x01 << 4)





MODULE_DESCRIPTION("LSI ET1011C PHY driver");

MODULE_AUTHOR("Chaithrika U S");

MODULE_LICENSE("GPL");



static int et1011c_config_aneg(struct phy_device *phydev)

{

	int ctl = 0;

	ctl = phy_read(phydev, MII_BMCR);

	if (ctl < 0)

		return ctl;

	ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |

		 BMCR_ANENABLE);

	/* First clear the PHY */

	phy_write(phydev, MII_BMCR, ctl | BMCR_RESET);



	return genphy_config_aneg(phydev);

}



static int et1011c_read_status(struct phy_device *phydev)

{

	int ret;

	u32 val;

	static int speed;

	ret = genphy_read_status(phydev);



	if (speed != phydev->speed) {

		speed = phydev->speed;

		val = phy_read(phydev, ET1011C_STATUS_REG);

		if ((val & ET1011C_SPEED_MASK) ==

					ET1011C_GIGABIT_SPEED) {

			val = phy_read(phydev, ET1011C_CONFIG_REG);

			val &= ~ET1011C_TX_FIFO_MASK;

			phy_write(phydev, ET1011C_CONFIG_REG, val\

					| ET1011C_GMII_INTERFACE\

					| ET1011C_SYS_CLK_EN\

					| ET1011C_TX_FIFO_DEPTH_16);



		}

	}

	return ret;

}



static struct phy_driver et1011c_driver = {

	.phy_id		= 0x0282f014,

	.name		= "ET1011C",

	.phy_id_mask	= 0xfffffff0,

	.features	= (PHY_BASIC_FEATURES | SUPPORTED_1000baseT_Full),

	.flags		= PHY_POLL,

	.config_aneg	= et1011c_config_aneg,

	.read_status	= et1011c_read_status,

	.driver 	= { .owner = THIS_MODULE,},

};



static int __init et1011c_init(void)

{

	return phy_driver_register(&et1011c_driver);

}



static void __exit et1011c_exit(void)

{

	phy_driver_unregister(&et1011c_driver);

}



module_init(et1011c_init);

module_exit(et1011c_exit);