OpenWrt – Rev 2

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/*
 *  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 <linux/of_mdio.h>
#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);
}

int ag71xx_phy_connect(struct ag71xx *ag)
{
        struct device_node *np = ag->pdev->dev.of_node;
        struct device_node *phy_node;
        int ret;

        if (of_phy_is_fixed_link(np)) {
                ret = of_phy_register_fixed_link(np);
                if (ret < 0) {
                        dev_err(&ag->pdev->dev,
                                "Failed to register fixed PHY link: %d\n", ret);
                        return ret;
                }

                phy_node = of_node_get(np);
        } else {
                phy_node = of_parse_phandle(np, "phy-handle", 0);
        }

        if (!phy_node) {
                dev_err(&ag->pdev->dev,
                        "Could not find valid phy node\n");
                return -ENODEV;
        }

        ag->phy_dev = of_phy_connect(ag->dev, phy_node, ag71xx_phy_link_adjust,
                                     0, ag->phy_if_mode);

        of_node_put(phy_node);

        if (!ag->phy_dev) {
                dev_err(&ag->pdev->dev,
                        "Could not connect to PHY device\n");
                return -ENODEV;
        }

        dev_info(&ag->pdev->dev, "connected to PHY at %s [uid=%08x, driver=%s]\n",
                    phydev_name(ag->phy_dev),
                    ag->phy_dev->phy_id, ag->phy_dev->drv->name);

        return 0;
}

void ag71xx_phy_disconnect(struct ag71xx *ag)
{
        phy_disconnect(ag->phy_dev);
}