[PATCH] Added Ethernet PHY support for the Realtek 821x
From: <hidden>
Date: 2007-09-27 19:11:44
Subsystem:
ethernet phy library, linux for powerpc (32-bit and 64-bit), networking drivers, the rest · Maintainers:
Andrew Lunn, Heiner Kallweit, Madhavan Srinivasan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Joe D'Abbraccio <redacted> The MPC837xERDB platform uses the RTL8211B Ethernet PHY on the WAN port (on eth0). Also added the kernel configuration options for selecting the PHY. Signed-off-by: Johnson Leung <redacted> Signed-off-by: Kevin Lam <redacted> Signed-off-by: Joe D'Abbraccio <redacted> --- arch/powerpc/configs/mpc837x_rdb_defconfig | 1 + drivers/net/phy/Kconfig | 5 ++ drivers/net/phy/Makefile | 1 + drivers/net/phy/realtek.c | 84 ++++++++++++++++++++++++++++ 4 files changed, 91 insertions(+), 0 deletions(-) create mode 100644 drivers/net/phy/realtek.c
diff --git a/arch/powerpc/configs/mpc837x_rdb_defconfig b/arch/powerpc/configs/mpc837x_rdb_defconfig
index e398e9f..9837493 100644
--- a/arch/powerpc/configs/mpc837x_rdb_defconfig
+++ b/arch/powerpc/configs/mpc837x_rdb_defconfig@@ -411,6 +411,7 @@ CONFIG_MARVELL_PHY=y # CONFIG_SMSC_PHY is not set # CONFIG_BROADCOM_PHY is not set # CONFIG_ICPLUS_PHY is not set +CONFIG_REALTEK_PHY=y # CONFIG_FIXED_PHY is not set CONFIG_NET_ETHERNET=y CONFIG_MII=y
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index dd09011..9ce95c9 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig@@ -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 tristate "Drivers for PHY emulation on fixed speed/link" ---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 8885650..d7bfa4e 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile@@ -12,4 +12,5 @@ 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-$(CONFIG_REALTEK_PHY) += realtek.o obj-$(CONFIG_FIXED_PHY) += fixed.o
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
new file mode 100644
index 0000000..546c25f
--- /dev/null
+++ b/drivers/net/phy/realtek.c@@ -0,0 +1,84 @@ +/* + * 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_config_init(struct phy_device *phydev) +{ + return 0; +} + +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 = 0x0001cc912, + .name = "RTL821x Gigabit Ethernet", + .phy_id_mask = 0x001fffff, + .features = PHY_GBIT_FEATURES, + .flags = PHY_HAS_INTERRUPT, + .config_init = &rtl821x_config_init, + .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);
--
1.5.2.2