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phylib: Add Realtek 821x eth PHY support

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this PHY present on the MPC8315E and MPC837xE RDB boards.

Signed-off-by: Johnson Leung <r58129@freescale.com>
Signed-off-by: Kevin Lam <r43770@freescale.com>
Signed-off-by: Joe D'Abbraccio <ljd015@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johnson Leung 2008-02-03 03:50:54 -08:00 committed by David S. Miller
parent 6344f0521a
commit 097c2aa89f
3 changed files with 86 additions and 0 deletions
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5
drivers/net/phy/Kconfig
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@ -60,6 +60,11 @@ config ICPLUS_PHY
---help---
Currently supports the IP175C PHY.
config REALTEK_PHY
tristate "Drivers for Realtek PHYs"
---help---
Supports the Realtek 821x PHY.
config FIXED_PHY
bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
---help---

1
drivers/net/phy/Makefile
View File

@ -12,5 +12,6 @@ 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-$(CONFIG_REALTEK_PHY) += realtek.o
obj-$(CONFIG_FIXED_PHY) += fixed.o
obj-$(CONFIG_MDIO_BITBANG) += mdio-bitbang.o

80
drivers/net/phy/realtek.c Normal file
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@ -0,0 +1,80 @@
/*
* drivers/net/phy/realtek.c
*
* Driver for Realtek PHYs
*
* Author: Johnson Leung <r58129@freescale.com>
*
* Copyright (c) 2004 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/phy.h>
#define RTL821x_PHYSR 0x11
#define RTL821x_PHYSR_DUPLEX 0x2000
#define RTL821x_PHYSR_SPEED 0xc000
#define RTL821x_INER 0x12
#define RTL821x_INER_INIT 0x6400
#define RTL821x_INSR 0x13
MODULE_DESCRIPTION("Realtek PHY driver");
MODULE_AUTHOR("Johnson Leung");
MODULE_LICENSE("GPL");
static int rtl821x_ack_interrupt(struct phy_device *phydev)
{
int err;
err = phy_read(phydev, RTL821x_INSR);
return (err < 0) ? err : 0;
}
static int rtl821x_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
err = phy_write(phydev, RTL821x_INER,
RTL821x_INER_INIT);
else
err = phy_write(phydev, RTL821x_INER, 0);
return err;
}
/* RTL8211B */
static struct phy_driver rtl821x_driver = {
.phy_id = 0x001cc912,
.name = "RTL821x Gigabit Ethernet",
.phy_id_mask = 0x001fffff,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = &genphy_config_aneg,
.read_status = &genphy_read_status,
.ack_interrupt = &rtl821x_ack_interrupt,
.config_intr = &rtl821x_config_intr,
.driver = { .owner = THIS_MODULE,},
};
static int __init realtek_init(void)
{
int ret;
ret = phy_driver_register(&rtl821x_driver);
return ret;
}
static void __exit realtek_exit(void)
{
phy_driver_unregister(&rtl821x_driver);
}
module_init(realtek_init);
module_exit(realtek_exit);