+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;
+ }
+
+ /* Reset the mdio bus explicitly */
+ if (ag->mii_bus->reset) {
+ mutex_lock(&ag->mii_bus->mdio_lock);
+ ag->mii_bus->reset(ag->mii_bus);
+ mutex_unlock(&ag->mii_bus->mdio_lock);
+ }
+
+ if (pdata->phy_mask)
+ return ag71xx_phy_connect_multi(ag);
+
+ return ag71xx_phy_connect_fixed(ag);
+}
+