mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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8c032f3c80
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23575 3c298f89-4303-0410-b956-a3cf2f4a3e73
229 lines
4.9 KiB
C
229 lines
4.9 KiB
C
/*
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* Atheros AR71xx built-in ethernet mac driver
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*
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* Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
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* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
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*
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* Based on Atheros' AG7100 driver
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include "ag71xx.h"
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static void ag71xx_phy_link_adjust(struct net_device *dev)
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{
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struct ag71xx *ag = netdev_priv(dev);
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struct phy_device *phydev = ag->phy_dev;
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unsigned long flags;
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int status_change = 0;
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spin_lock_irqsave(&ag->lock, flags);
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if (phydev->link) {
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if (ag->duplex != phydev->duplex
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|| ag->speed != phydev->speed) {
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status_change = 1;
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}
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}
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if (phydev->link != ag->link)
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status_change = 1;
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ag->link = phydev->link;
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ag->duplex = phydev->duplex;
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ag->speed = phydev->speed;
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if (status_change)
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ag71xx_link_adjust(ag);
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spin_unlock_irqrestore(&ag->lock, flags);
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}
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void ag71xx_phy_start(struct ag71xx *ag)
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{
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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if (ag->phy_dev) {
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phy_start(ag->phy_dev);
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} else {
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if (pdata->has_ar7240_switch)
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ag71xx_ar7240_start(ag);
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ag->link = 1;
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ag71xx_link_adjust(ag);
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}
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}
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void ag71xx_phy_stop(struct ag71xx *ag)
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{
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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if (ag->phy_dev) {
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phy_stop(ag->phy_dev);
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} else {
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if (pdata->has_ar7240_switch)
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ag71xx_ar7240_stop(ag);
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ag->link = 0;
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ag71xx_link_adjust(ag);
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}
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}
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static int ag71xx_phy_connect_fixed(struct ag71xx *ag)
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{
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struct net_device *dev = ag->dev;
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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int ret = 0;
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/* use fixed settings */
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switch (pdata->speed) {
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case SPEED_10:
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case SPEED_100:
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case SPEED_1000:
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break;
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default:
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printk(KERN_ERR "%s: invalid speed specified\n", dev->name);
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ret = -EINVAL;
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break;
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}
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printk(KERN_DEBUG "%s: using fixed link parameters\n", dev->name);
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ag->duplex = pdata->duplex;
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ag->speed = pdata->speed;
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return ret;
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}
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static int ag71xx_phy_connect_multi(struct ag71xx *ag)
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{
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struct net_device *dev = ag->dev;
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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struct phy_device *phydev = NULL;
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int phy_addr;
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int ret = 0;
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for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
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if (!(pdata->phy_mask & (1 << phy_addr)))
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continue;
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if (ag->mii_bus->phy_map[phy_addr] == NULL)
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continue;
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DBG("%s: PHY found at %s, uid=%08x\n",
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dev->name,
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dev_name(&ag->mii_bus->phy_map[phy_addr]->dev),
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ag->mii_bus->phy_map[phy_addr]->phy_id);
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if (phydev == NULL)
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phydev = ag->mii_bus->phy_map[phy_addr];
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}
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if (!phydev) {
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printk(KERN_ERR "%s: no PHY found with phy_mask=%08x\n",
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dev->name, pdata->phy_mask);
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return -ENODEV;
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}
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ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev),
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&ag71xx_phy_link_adjust, 0,
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pdata->phy_if_mode);
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if (IS_ERR(ag->phy_dev)) {
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printk(KERN_ERR "%s: could not connect to PHY at %s\n",
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dev->name, dev_name(&phydev->dev));
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return PTR_ERR(ag->phy_dev);
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}
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/* mask with MAC supported features */
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if (pdata->has_gbit)
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phydev->supported &= PHY_GBIT_FEATURES;
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else
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phydev->supported &= PHY_BASIC_FEATURES;
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phydev->advertising = phydev->supported;
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printk(KERN_DEBUG "%s: connected to PHY at %s [uid=%08x, driver=%s]\n",
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dev->name, dev_name(&phydev->dev),
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phydev->phy_id, phydev->drv->name);
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ag->link = 0;
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ag->speed = 0;
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ag->duplex = -1;
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return ret;
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}
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static int dev_is_class(struct device *dev, void *class)
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{
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if (dev->class != NULL && !strcmp(dev->class->name, class))
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return 1;
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return 0;
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}
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static struct device *dev_find_class(struct device *parent, char *class)
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{
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if (dev_is_class(parent, class)) {
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get_device(parent);
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return parent;
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}
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return device_find_child(parent, class, dev_is_class);
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}
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static struct mii_bus *dev_to_mii_bus(struct device *dev)
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{
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struct device *d;
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d = dev_find_class(dev, "mdio_bus");
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if (d != NULL) {
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struct mii_bus *bus;
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bus = to_mii_bus(d);
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put_device(d);
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return bus;
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}
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return NULL;
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}
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int __devinit ag71xx_phy_connect(struct ag71xx *ag)
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{
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev);
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if (ag->mii_bus == NULL) {
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printk(KERN_ERR "%s: unable to find MII bus on device '%s'\n",
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ag->dev->name, dev_name(pdata->mii_bus_dev));
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return -ENODEV;
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}
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/* Reset the mdio bus explicitly */
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if (ag->mii_bus->reset) {
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mutex_lock(&ag->mii_bus->mdio_lock);
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ag->mii_bus->reset(ag->mii_bus);
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mutex_unlock(&ag->mii_bus->mdio_lock);
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}
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if (pdata->has_ar7240_switch)
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return ag71xx_ar7240_init(ag);
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if (pdata->phy_mask)
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return ag71xx_phy_connect_multi(ag);
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return ag71xx_phy_connect_fixed(ag);
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}
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void __devexit ag71xx_phy_disconnect(struct ag71xx *ag)
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{
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struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
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if (pdata->has_ar7240_switch)
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ag71xx_ar7240_cleanup(ag);
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else if (ag->phy_dev)
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phy_disconnect(ag->phy_dev);
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}
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