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authorJohnson Leung <r58129@freescale.com>2008-02-03 03:50:54 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-03 04:28:42 -0800
commit097c2aa89f22f55db19fd0f72aede460bcb61f29 (patch)
treea2746aacc233c2cd79f111cecf11f4c8a5a5ae16 /drivers
parent6344f0521aac9f93c312826216762f2185268390 (diff)
phylib: Add Realtek 821x eth PHY support
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/phy/Kconfig5
-rw-r--r--drivers/net/phy/Makefile1
-rw-r--r--drivers/net/phy/realtek.c80
3 files changed, 86 insertions, 0 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 7fe03ce774b..f4ca0591231 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
bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 3d6cc7b67a8..5997d6ef702 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -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
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
new file mode 100644
index 00000000000..a052a6744a5
--- /dev/null
+++ b/drivers/net/phy/realtek.c
@@ -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);