--- /dev/null
+/*
+ * Atheros AR71xx built-in ethernet mac driver
+ *
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * Based on Atheros' AG7100 driver
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ag71xx.h"
+
+static void ag71xx_phy_link_adjust(struct net_device *dev)
+{
+ struct ag71xx *ag = netdev_priv(dev);
+ struct phy_device *phydev = ag->phy_dev;
+ unsigned long flags;
+ int status_change = 0;
+
+ spin_lock_irqsave(&ag->lock, flags);
+
+ if (phydev->link) {
+ if (ag->duplex != phydev->duplex
+ || ag->speed != phydev->speed) {
+ status_change = 1;
+ }
+ }
+
+ if (phydev->link != ag->link)
+ status_change = 1;
+
+ ag->link = phydev->link;
+ ag->duplex = phydev->duplex;
+ ag->speed = phydev->speed;
+
+ if (status_change)
+ ag71xx_link_adjust(ag);
+
+ spin_unlock_irqrestore(&ag->lock, flags);
+}
+
+void ag71xx_phy_start(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (ag->phy_dev) {
+ phy_start(ag->phy_dev);
+ } else if (pdata->switch_data) {
+ ag71xx_ar7240_start(ag);
+ } else {
+ ag->link = 1;
+ ag71xx_link_adjust(ag);
+ }
+}
+
+void ag71xx_phy_stop(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ unsigned long flags;
+
+ if (ag->phy_dev)
+ phy_stop(ag->phy_dev);
+ else if (pdata->switch_data)
+ ag71xx_ar7240_stop(ag);
+
+ spin_lock_irqsave(&ag->lock, flags);
+ if (ag->link) {
+ ag->link = 0;
+ ag71xx_link_adjust(ag);
+ }
+ spin_unlock_irqrestore(&ag->lock, flags);
+}
+
+static int ag71xx_phy_connect_fixed(struct ag71xx *ag)
+{
+ struct net_device *dev = ag->dev;
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ int ret = 0;
+
+ /* use fixed settings */
+ switch (pdata->speed) {
+ case SPEED_10:
+ case SPEED_100:
+ case SPEED_1000:
+ break;
+ default:
+ netdev_err(dev, "invalid speed specified\n");
+ ret = -EINVAL;
+ break;
+ }
+
+ netdev_dbg(dev, "using fixed link parameters\n");
+
+ ag->duplex = pdata->duplex;
+ ag->speed = pdata->speed;
+
+ return ret;
+}
+
+static int ag71xx_phy_connect_multi(struct ag71xx *ag)
+{
+ struct net_device *dev = ag->dev;
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ struct phy_device *phydev = NULL;
+ int phy_addr;
+ int ret = 0;
+
+ for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
+ if (!(pdata->phy_mask & (1 << phy_addr)))
+ continue;
+
+ if (ag->mii_bus->phy_map[phy_addr] == NULL)
+ continue;
+
+ DBG("%s: PHY found at %s, uid=%08x\n",
+ dev->name,
+ dev_name(&ag->mii_bus->phy_map[phy_addr]->dev),
+ ag->mii_bus->phy_map[phy_addr]->phy_id);
+
+ if (phydev == NULL)
+ phydev = ag->mii_bus->phy_map[phy_addr];
+ }
+
+ if (!phydev) {
+ netdev_err(dev, "no PHY found with phy_mask=%08x\n",
+ pdata->phy_mask);
+ return -ENODEV;
+ }
+
+ ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev),
+ &ag71xx_phy_link_adjust, 0,
+ pdata->phy_if_mode);
+
+ if (IS_ERR(ag->phy_dev)) {
+ netdev_err(dev, "could not connect to PHY at %s\n",
+ dev_name(&phydev->dev));
+ return PTR_ERR(ag->phy_dev);
+ }
+
+ /* mask with MAC supported features */
+ if (pdata->has_gbit)
+ phydev->supported &= PHY_GBIT_FEATURES;
+ else
+ phydev->supported &= PHY_BASIC_FEATURES;
+
+ phydev->advertising = phydev->supported;
+
+ netdev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n",
+ dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name);
+
+ ag->link = 0;
+ ag->speed = 0;
+ ag->duplex = -1;
+
+ 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 __devinit ag71xx_phy_connect(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (pdata->mii_bus_dev == NULL ||
+ pdata->mii_bus_dev->bus == NULL )
+ return ag71xx_phy_connect_fixed(ag);
+
+ ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
+ if (ag->mii_bus == NULL) {
+ netdev_err(ag->dev, "unable to find MII bus on device '%s'\n",
+ 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->switch_data)
+ return ag71xx_ar7240_init(ag);
+
+ if (pdata->phy_mask)
+ return ag71xx_phy_connect_multi(ag);
+
+ return ag71xx_phy_connect_fixed(ag);
+}
+
+void ag71xx_phy_disconnect(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+
+ if (pdata->switch_data)
+ ag71xx_ar7240_cleanup(ag);
+ else if (ag->phy_dev)
+ phy_disconnect(ag->phy_dev);
+}
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