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 device *dev = &ag->pdev->dev;
80 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
83 /* use fixed settings */
84 switch (pdata->speed) {
90 dev_err(dev, "invalid speed specified\n");
95 dev_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 device *dev = &ag->pdev->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 LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
116 if (ag->mii_bus->phy_map[phy_addr] == NULL)
119 DBG("%s: PHY found at %s, uid=%08x\n",
121 dev_name(&ag->mii_bus->phy_map[phy_addr]->dev),
122 ag->mii_bus->phy_map[phy_addr]->phy_id);
125 phydev = ag->mii_bus->phy_map[phy_addr];
127 if (ag->mii_bus->mdio_map[phy_addr] == NULL)
130 DBG("%s: PHY found at %s, uid=%08x\n",
132 dev_name(&ag->mii_bus->mdio_map[phy_addr]->dev),
133 (phydev) ? phydev->phy_id : 0);
136 phydev = mdiobus_get_phy(ag->mii_bus, phy_addr);
141 dev_err(dev, "no PHY found with phy_mask=%08x\n",
146 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
147 ag->phy_dev = phy_connect(ag->dev, dev_name(&phydev->dev),
149 ag->phy_dev = phy_connect(ag->dev, phydev_name(phydev),
151 &ag71xx_phy_link_adjust,
154 if (IS_ERR(ag->phy_dev)) {
155 dev_err(dev, "could not connect to PHY at %s\n",
156 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
157 dev_name(&phydev->dev));
159 phydev_name(phydev));
161 return PTR_ERR(ag->phy_dev);
164 /* mask with MAC supported features */
166 phydev->supported &= PHY_GBIT_FEATURES;
168 phydev->supported &= PHY_BASIC_FEATURES;
170 phydev->advertising = phydev->supported;
172 dev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n",
173 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,5,0)
174 dev_name(&phydev->dev),
178 phydev->phy_id, phydev->drv->name);
187 static int dev_is_class(struct device *dev, void *class)
189 if (dev->class != NULL && !strcmp(dev->class->name, class))
195 static struct device *dev_find_class(struct device *parent, char *class)
197 if (dev_is_class(parent, class)) {
202 return device_find_child(parent, class, dev_is_class);
205 static struct mii_bus *dev_to_mii_bus(struct device *dev)
209 d = dev_find_class(dev, "mdio_bus");
222 int ag71xx_phy_connect(struct ag71xx *ag)
224 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
226 if (pdata->mii_bus_dev == NULL ||
227 pdata->mii_bus_dev->bus == NULL )
228 return ag71xx_phy_connect_fixed(ag);
230 ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
231 if (ag->mii_bus == NULL) {
232 dev_err(&ag->pdev->dev, "unable to find MII bus on device '%s'\n",
233 dev_name(pdata->mii_bus_dev));
237 /* Reset the mdio bus explicitly */
238 if (ag->mii_bus->reset) {
239 mutex_lock(&ag->mii_bus->mdio_lock);
240 ag->mii_bus->reset(ag->mii_bus);
241 mutex_unlock(&ag->mii_bus->mdio_lock);
244 if (pdata->switch_data)
245 return ag71xx_ar7240_init(ag);
248 return ag71xx_phy_connect_multi(ag);
250 return ag71xx_phy_connect_fixed(ag);
253 void ag71xx_phy_disconnect(struct ag71xx *ag)
255 struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
257 if (pdata->switch_data)
258 ag71xx_ar7240_cleanup(ag);
259 else if (ag->phy_dev)
260 phy_disconnect(ag->phy_dev);