[PATCH] Add Broadcom PHY support
This patch adds a driver to support the bcm5421s and bcm5461s PHY
Kernel version: linux-2.6.18-rc6
Index: linux-2.6.18-rc6/drivers/net/phy/broadcom.c
===================================================================
--- /dev/null
+++ linux-2.6.18-rc6/drivers/net/phy/broadcom.c
@@ -0,0 +1,129 @@
+/*
+ * drivers/net/phy/broadcom.c, Driver for Broadcom PHYs
+ *
+ * Copyright (c) 2006 Wind River Systems, Inc.
+ * Written by Amy Fong
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.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 <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+
+/* BCM5421S control register */
+#define MII_BCM5421S_CONTROL 0x00
+#define MII_BCM5421S_CONTROL_RESET 0x00008000
+#define MII_BCM5421S_CONTROL_INIT 0x00001140
+#define MII_BCM5421S_ANEN 0x00001000
+#define MII_BCM5421S_CR 0x00
+#define MII_BCM5421S_CR_RST 0x00008000
+#define MII_BCM5421S_CR_INIT 0x00001000
+#define MII_BCM5421S_STATUS 0x1
+#define MII_BCM5421S_STATUS_AN_DONE 0x00000020
+#define MII_BCM5421S_STATUS_LINK 0x0004
+#define MII_BCM5421S_PHYIR1 0x2
+#define MII_BCM5421S_PHYIR2 0x3
+#define MII_BCM5421S_ANLPBPA 0x5
+#define MII_BCM5421S_ANLPBPA_HALF 0x00000040
+#define MII_BCM5421S_ANLPBPA_FULL 0x00000020
+#define MII_BCM5421S_ANEX 0x6
+#define MII_BCM5421S_ANEX_NP 0x00000004
+#define MII_BCM5421S_ANEX_PRX 0x00000002
+
+MODULE_DESCRIPTION("Broadcom PHY driver");
+MODULE_AUTHOR("Amy Fong");
+MODULE_LICENSE("GPL");
+
+static int bcm5421s_config_aneg(struct phy_device *phydev)
+{
+ int err;
+
+ /* Write the appropriate value to the PHY reg */
+ if (phydev->supported & SUPPORTED_1000baseT_Full)
+ err = phy_write(phydev, MII_BCM5421S_CONTROL, MII_BCM5421S_CONTROL_INIT);
+ else
+ err = phy_write(phydev, MII_BCM5421S_CONTROL, MII_BCM5421S_CR_INIT);
+
+ if (err < 0) return err;
+
+ /* doesn't have phy interrupt */
+ phydev->interrupts = PHY_INTERRUPT_DISABLED;
+
+ return 0;
+}
+
+static struct phy_driver bcm5421s_driver = {
+ .phy_id = 0x002060e1,
+ .phy_id_mask = 0x00ffffff,
+ .name = "Broadcom BCM5421S",
+ .features = PHY_GBIT_FEATURES,
+ .config_aneg = bcm5421s_config_aneg,
+ .read_status = genphy_read_status,
+ .driver = { .owner = THIS_MODULE,},
+};
+
+/* Glossy description on Broadcom's site seems to hint that the 5461
+ should be a drop-in for the 5421.... */
+static struct phy_driver bcm5461s_driver = {
+ .phy_id = 0x002060c1,
+ .phy_id_mask = 0x00ffffff,
+ .name = "Broadcom BCM5461S",
+ .features = PHY_GBIT_FEATURES,
+ .config_aneg = bcm5421s_config_aneg,
+ .read_status = genphy_read_status,
+ .driver = { .owner = THIS_MODULE,},
+};
+
+static int __init broadcom_init(void)
+{
+ int ret;
+
+ ret = phy_driver_register(&bcm5421s_driver);
+ if (!ret) {
+ ret = phy_driver_register(&bcm5461s_driver);
+ if (ret) phy_driver_unregister(&bcm5421s_driver);
+ }
+ return ret;
+}
+
+static void __exit broadcom_exit(void)
+{
+ phy_driver_unregister(&bcm5421s_driver);
+ phy_driver_unregister(&bcm5461s_driver);
+}
+
+module_init(broadcom_init);
+module_exit(broadcom_exit);
Index: linux-2.6.18-rc6/drivers/net/phy/Kconfig
===================================================================
--- linux-2.6.18-rc6.orig/drivers/net/phy/Kconfig
+++ linux-2.6.18-rc6/drivers/net/phy/Kconfig
@@ -56,6 +56,12 @@
---help---
Currently supports the LAN83C185 PHY
+config BROADCOM_PHY
+ tristate "Drivers for Broadcom PHYs"
+ depends on PHYLIB
+ ---help---
+ Currently supports bcm5421s and bcm5461s
+
config FIXED_PHY
tristate "Drivers for PHY emulation on fixed speed/link"
depends on PHYLIB
Index: linux-2.6.18-rc6/drivers/net/phy/Makefile
===================================================================
--- linux-2.6.18-rc6.orig/drivers/net/phy/Makefile
+++ linux-2.6.18-rc6/drivers/net/phy/Makefile
@@ -10,4 +10,5 @@
obj-$(CONFIG_QSEMI_PHY) += qsemi.o
obj-$(CONFIG_SMSC_PHY) += smsc.o
obj-$(CONFIG_VITESSE_PHY) += vitesse.o
+obj-$(CONFIG_BROADCOM_PHY) += broadcom.o
obj-$(CONFIG_FIXED_PHY) += fixed.o
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