From 5608c597c3b0b5652356c3a9cddda53b315070cb Mon Sep 17 00:00:00 2001
From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 8 Dec 2009 10:29:27 +0000
Subject: ar71xx: add support for external mii_bus
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18692 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../linux/ar71xx/files/arch/mips/ar71xx/devices.c | 3 ++
.../arch/mips/include/asm/mach-ar71xx/platform.h | 1 +
.../linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h | 1 -
.../ar71xx/files/drivers/net/ag71xx/ag71xx_main.c | 7 +++-
.../ar71xx/files/drivers/net/ag71xx/ag71xx_mdio.c | 7 ----
.../ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c | 42 ++++++++++++++++++++++
6 files changed, 52 insertions(+), 9 deletions(-)
(limited to 'target/linux/ar71xx')
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c b/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c
index bed23938e..43212ed3b 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c
@@ -628,6 +628,9 @@ void __init ar71xx_add_device_eth(unsigned int id)
ar71xx_eth_instance);
}
+ if (pdata->mii_bus_dev == NULL)
+ pdata->mii_bus_dev = &ar71xx_mdio_device.dev;
+
/* Reset the device */
ar71xx_device_stop(pdata->reset_bit);
mdelay(100);
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
index baded8b8b..145e79fce 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/platform.h
@@ -25,6 +25,7 @@ struct ag71xx_platform_data {
u32 reset_bit;
u32 mii_if;
u8 mac_addr[ETH_ALEN];
+ struct device *mii_bus_dev;
u8 has_gbit:1;
u8 is_ar91xx:1;
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index 77962fec8..ac52896ab 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -135,7 +135,6 @@ struct ag71xx {
extern struct ethtool_ops ag71xx_ethtool_ops;
-extern struct ag71xx_mdio *ag71xx_mdio_bus;
int ag71xx_mdio_driver_init(void) __init;
void ag71xx_mdio_driver_exit(void);
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 28708f421..88edb2fd4 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -824,6 +824,12 @@ static int __init ag71xx_probe(struct platform_device *pdev)
goto err_out;
}
+ if (pdata->mii_bus_dev == NULL) {
+ dev_err(&pdev->dev, "no MII bus device specified\n");
+ err = -EINVAL;
+ goto err_out;
+ }
+
dev = alloc_etherdev(sizeof(*ag));
if (!dev) {
dev_err(&pdev->dev, "alloc_etherdev failed\n");
@@ -836,7 +842,6 @@ static int __init ag71xx_probe(struct platform_device *pdev)
ag = netdev_priv(dev);
ag->pdev = pdev;
ag->dev = dev;
- ag->mii_bus = ag71xx_mdio_bus->mii_bus;
ag->msg_enable = netif_msg_init(ag71xx_msg_level,
AG71XX_DEFAULT_MSG_ENABLE);
spin_lock_init(&ag->lock);
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mdio.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mdio.c
index d3ff13ec4..6bc858cf8 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mdio.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_mdio.c
@@ -16,8 +16,6 @@
#define AG71XX_MDIO_RETRY 1000
#define AG71XX_MDIO_DELAY 5
-struct ag71xx_mdio *ag71xx_mdio_bus;
-
static inline void ag71xx_mdio_wr(struct ag71xx_mdio *am, unsigned reg,
u32 value)
{
@@ -143,9 +141,6 @@ static int __init ag71xx_mdio_probe(struct platform_device *pdev)
int i;
int err;
- if (ag71xx_mdio_bus)
- return -EBUSY;
-
pdata = pdev->dev.platform_data;
if (!pdata) {
dev_err(&pdev->dev, "no platform data specified\n");
@@ -202,7 +197,6 @@ static int __init ag71xx_mdio_probe(struct platform_device *pdev)
ag71xx_mdio_dump_regs(am);
platform_set_drvdata(pdev, am);
- ag71xx_mdio_bus = am;
return 0;
err_free_bus:
@@ -220,7 +214,6 @@ static int __exit ag71xx_mdio_remove(struct platform_device *pdev)
struct ag71xx_mdio *am = platform_get_drvdata(pdev);
if (am) {
- ag71xx_mdio_bus = NULL;
mdiobus_unregister(am->mii_bus);
mdiobus_free(am->mii_bus);
iounmap(am->mdio_base);
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
index 176eddaaf..0db0a4bf7 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c
@@ -262,10 +262,52 @@ static int ag71xx_phy_connect_multi(struct ag71xx *ag)
return ret;
}
+static int dev_is_class(struct device *dev, void *class)
+{
+ if (dev->class != NULL && !strcmp(dev->class->name, class))
+ return 1;
+
+ return 0;
+}
+
+static struct device *dev_find_class(struct device *parent, char *class)
+{
+ if (dev_is_class(parent, class)) {
+ get_device(parent);
+ return parent;
+ }
+
+ return device_find_child(parent, class, dev_is_class);
+}
+
+static struct mii_bus *dev_to_mii_bus(struct device *dev)
+{
+ struct device *d;
+
+ d = dev_find_class(dev, "mdio_bus");
+ if (d != NULL) {
+ struct mii_bus *bus;
+
+ bus = to_mii_bus(d);
+ put_device(d);
+
+ return bus;
+ }
+
+ return NULL;
+}
+
int ag71xx_phy_connect(struct ag71xx *ag)
{
struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
+ if (ag->mii_bus == NULL) {
+ printk(KERN_ERR "%s: unable to find MII bus on device '%s'\n",
+ ag->dev->name, dev_name(pdata->mii_bus_dev));
+ return -ENODEV;
+ }
+
if (pdata->phy_mask)
return ag71xx_phy_connect_multi(ag);
--
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