2 * Atheros AR71xx built-in ethernet mac driver
4 * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * Based on Atheros' AG7100 driver
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published
11 * by the Free Software Foundation.
16 static void ag71xx_phy_link_adjust(struct net_device *dev)
18 struct ag71xx *ag = netdev_priv(dev);
19 struct phy_device *phydev = ag->phy_dev;
21 int status_change = 0;
23 spin_lock_irqsave(&ag->lock, flags);
26 if (ag->duplex != phydev->duplex
27 || ag->speed != phydev->speed) {
32 if (phydev->link != ag->link)
35 ag->link = phydev->link;
36 ag->duplex = phydev->duplex;
37 ag->speed = phydev->speed;
40 ag71xx_link_adjust(ag);
42 spin_unlock_irqrestore(&ag->lock, flags);
45 void ag71xx_phy_start(struct ag71xx *ag)
47 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
50 phy_start(ag->phy_dev);
51 } else if (pdata->mii_bus_dev && pdata->switch_data) {
52 ag71xx_ar7240_start(ag);
55 ag71xx_link_adjust(ag);
59 void ag71xx_phy_stop(struct ag71xx *ag)
61 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
65 phy_stop(ag->phy_dev);
66 else if (pdata->mii_bus_dev && pdata->switch_data)
67 ag71xx_ar7240_stop(ag);
69 spin_lock_irqsave(&ag->lock, flags);
72 ag71xx_link_adjust(ag);
74 spin_unlock_irqrestore(&ag->lock, flags);
77 static int ag71xx_phy_connect_fixed(struct ag71xx *ag)
79 struct net_device *dev = ag->dev;
80 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
83 /* use fixed settings */
84 switch (pdata->speed) {
90 netdev_err(dev, "invalid speed specified\n");
95 netdev_dbg(dev, "using fixed link parameters\n");
97 ag->duplex = pdata->duplex;
98 ag->speed = pdata->speed;
103 static int ag71xx_phy_connect_multi(struct ag71xx *ag)
105 struct net_device *dev = ag->dev;
106 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
107 struct phy_device *phydev = NULL;
111 for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
112 if (!(pdata->phy_mask & (1 << phy_addr)))
115 if (ag->mii_bus->phy_map[phy_addr] == NULL)
118 DBG("%s: PHY found at %s, uid=%08x\n",
120 dev_name(&ag->mii_bus->phy_map[phy_addr]->dev),
121 ag->mii_bus->phy_map[phy_addr]->phy_id);
124 phydev = ag->mii_bus->phy_map[phy_addr];
128 netdev_err(dev, "no PHY found with phy_mask=%08x\n",
133 ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev),
134 &ag71xx_phy_link_adjust,
137 if (IS_ERR(ag->phy_dev)) {
138 netdev_err(dev, "could not connect to PHY at %s\n",
139 dev_name(&phydev->dev));
140 return PTR_ERR(ag->phy_dev);
143 /* mask with MAC supported features */
145 phydev->supported &= PHY_GBIT_FEATURES;
147 phydev->supported &= PHY_BASIC_FEATURES;
149 phydev->advertising = phydev->supported;
151 netdev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n",
152 dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name);
161 static int dev_is_class(struct device *dev, void *class)
163 if (dev->class != NULL && !strcmp(dev->class->name, class))
169 static struct device *dev_find_class(struct device *parent, char *class)
171 if (dev_is_class(parent, class)) {
176 return device_find_child(parent, class, dev_is_class);
179 static struct mii_bus *dev_to_mii_bus(struct device *dev)
183 d = dev_find_class(dev, "mdio_bus");
196 int ag71xx_phy_connect(struct ag71xx *ag)
198 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
200 if (pdata->mii_bus_dev == NULL ||
201 pdata->mii_bus_dev->bus == NULL )
202 return ag71xx_phy_connect_fixed(ag);
204 ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
205 if (ag->mii_bus == NULL) {
206 netdev_err(ag->dev, "unable to find MII bus on device '%s'\n",
207 dev_name(pdata->mii_bus_dev));
211 /* Reset the mdio bus explicitly */
212 if (ag->mii_bus->reset) {
213 mutex_lock(&ag->mii_bus->mdio_lock);
214 ag->mii_bus->reset(ag->mii_bus);
215 mutex_unlock(&ag->mii_bus->mdio_lock);
218 if (pdata->switch_data)
219 return ag71xx_ar7240_init(ag);
222 return ag71xx_phy_connect_multi(ag);
224 return ag71xx_phy_connect_fixed(ag);
227 void ag71xx_phy_disconnect(struct ag71xx *ag)
229 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
231 if (pdata->switch_data)
232 ag71xx_ar7240_cleanup(ag);
233 else if (ag->phy_dev)
234 phy_disconnect(ag->phy_dev);