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Date: Thu, 27 Sep 2007 14:26:48 -0400
From: ljd015@...escale.com
To: netdev@...r.kernel.org
Cc: "Joe D'Abbraccio" <ljd015@...escale.com>,
Johnson Leung <r58129@...escale.com>,
Kevin Lam <r43770@...escale.com>
Subject: [PATCH] Added Ethernet PHY support for the Realtek 821x
From: Joe D'Abbraccio <ljd015@...escale.com>
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 <r58129@...escale.com>
Signed-off-by: Kevin Lam <r43770@...escale.com>
Signed-off-by: Joe D'Abbraccio <ljd015@...escale.com>
---
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@...escale.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
-
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