ar71xx: add support for external mii_bus

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18692 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c b/target/linux/ar71xx/files/arch/mips/ar71xx/devices.c
index bed2393..43212ed 100644 (file)
--- 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 baded8b..145e79f 100644 (file)
--- 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 77962fe..ac52896 100644 (file)
--- 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 28708f4..88edb2f 100644 (file)
--- 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 d3ff13e..6bc858c 100644 (file)
--- 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 176edda..0db0a4b 100644 (file)
--- 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);