-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- *
- * Copyright (C) 2009-2013 John Crispin <blogic@openwrt.org>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/platform_device.h>
-#include <linux/phy.h>
-#include <linux/of_device.h>
-#include <linux/clk.h>
-#include <linux/of_net.h>
-#include <linux/of_mdio.h>
-
-#include "ralink_soc_eth.h"
-#include "mdio.h"
-
-static int fe_mdio_reset(struct mii_bus *bus)
-{
- /* TODO */
- return 0;
-}
-
-static void fe_phy_link_adjust(struct net_device *dev)
-{
- struct fe_priv *priv = netdev_priv(dev);
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&priv->phy->lock, flags);
- for (i = 0; i < 8; i++) {
- if (priv->phy->phy_node[i]) {
- struct phy_device *phydev = priv->phy->phy[i];
- int status_change = 0;
-
- if (phydev->link)
- if (priv->phy->duplex[i] != phydev->duplex ||
- priv->phy->speed[i] != phydev->speed)
- status_change = 1;
-
- if (phydev->link != priv->link[i])
- status_change = 1;
-
- switch (phydev->speed) {
- case SPEED_1000:
- case SPEED_100:
- case SPEED_10:
- priv->link[i] = phydev->link;
- priv->phy->duplex[i] = phydev->duplex;
- priv->phy->speed[i] = phydev->speed;
-
- if (status_change && priv->soc->mdio_adjust_link)
- priv->soc->mdio_adjust_link(priv, i);
- break;
- }
- }
- }
-}
-
-int fe_connect_phy_node(struct fe_priv *priv, struct device_node *phy_node)
-{
- const __be32 *_port = NULL;
- struct phy_device *phydev;
- int phy_mode, port;
-
- _port = of_get_property(phy_node, "reg", NULL);
-
- if (!_port || (be32_to_cpu(*_port) >= 0x20)) {
- pr_err("%s: invalid port id\n", phy_node->name);
- return -EINVAL;
- }
- port = be32_to_cpu(*_port);
- phy_mode = of_get_phy_mode(phy_node);
- if (phy_mode < 0) {
- dev_err(priv->device, "incorrect phy-mode %d\n", phy_mode);
- priv->phy->phy_node[port] = NULL;
- return -EINVAL;
- }
-
- phydev = of_phy_connect(priv->netdev, phy_node, fe_phy_link_adjust,
- 0, phy_mode);
- if (IS_ERR(phydev)) {
- dev_err(priv->device, "could not connect to PHY\n");
- priv->phy->phy_node[port] = NULL;
- return PTR_ERR(phydev);
- }
-
- phydev->supported &= PHY_GBIT_FEATURES;
- phydev->advertising = phydev->supported;
- phydev->no_auto_carrier_off = 1;
-
- dev_info(priv->device,
- "connected port %d to PHY at %s [uid=%08x, driver=%s]\n",
- port, dev_name(&phydev->dev), phydev->phy_id,
- phydev->drv->name);
-
- priv->phy->phy[port] = phydev;
- priv->link[port] = 0;
-
- return 0;
-}
-
-static void phy_init(struct fe_priv *priv, struct phy_device *phy)
-{
- phy_attach(priv->netdev, dev_name(&phy->dev), PHY_INTERFACE_MODE_MII);
-
- phy->autoneg = AUTONEG_ENABLE;
- phy->speed = 0;
- phy->duplex = 0;
- phy->supported &= PHY_BASIC_FEATURES;
- phy->advertising = phy->supported | ADVERTISED_Autoneg;
-
- phy_start_aneg(phy);
-}
-
-static int fe_phy_connect(struct fe_priv *priv)
-{
- int i;
-
- for (i = 0; i < 8; i++) {
- if (priv->phy->phy_node[i]) {
- if (!priv->phy_dev) {
- priv->phy_dev = priv->phy->phy[i];
- priv->phy_flags = FE_PHY_FLAG_PORT;
- }
- } else if (priv->mii_bus && priv->mii_bus->phy_map[i]) {
- phy_init(priv, priv->mii_bus->phy_map[i]);
- if (!priv->phy_dev) {
- priv->phy_dev = priv->mii_bus->phy_map[i];
- priv->phy_flags = FE_PHY_FLAG_ATTACH;
- }
- }
- }
-
- return 0;
-}
-
-static void fe_phy_disconnect(struct fe_priv *priv)
-{
- unsigned long flags;
- int i;
-
- for (i = 0; i < 8; i++)
- if (priv->phy->phy_fixed[i]) {
- spin_lock_irqsave(&priv->phy->lock, flags);
- priv->link[i] = 0;
- if (priv->soc->mdio_adjust_link)
- priv->soc->mdio_adjust_link(priv, i);
- spin_unlock_irqrestore(&priv->phy->lock, flags);
- } else if (priv->phy->phy[i]) {
- phy_disconnect(priv->phy->phy[i]);
- } else if (priv->mii_bus && priv->mii_bus->phy_map[i]) {
- phy_detach(priv->mii_bus->phy_map[i]);
- }
-}
-
-static void fe_phy_start(struct fe_priv *priv)
-{
- unsigned long flags;
- int i;
-
- for (i = 0; i < 8; i++) {
- if (priv->phy->phy_fixed[i]) {
- spin_lock_irqsave(&priv->phy->lock, flags);
- priv->link[i] = 1;
- if (priv->soc->mdio_adjust_link)
- priv->soc->mdio_adjust_link(priv, i);
- spin_unlock_irqrestore(&priv->phy->lock, flags);
- } else if (priv->phy->phy[i]) {
- phy_start(priv->phy->phy[i]);
- }
- }
-}
-
-static void fe_phy_stop(struct fe_priv *priv)
-{
- unsigned long flags;
- int i;
-
- for (i = 0; i < 8; i++)
- if (priv->phy->phy_fixed[i]) {
- spin_lock_irqsave(&priv->phy->lock, flags);
- priv->link[i] = 0;
- if (priv->soc->mdio_adjust_link)
- priv->soc->mdio_adjust_link(priv, i);
- spin_unlock_irqrestore(&priv->phy->lock, flags);
- } else if (priv->phy->phy[i]) {
- phy_stop(priv->phy->phy[i]);
- }
-}
-
-static struct fe_phy phy_ralink = {
- .connect = fe_phy_connect,
- .disconnect = fe_phy_disconnect,
- .start = fe_phy_start,
- .stop = fe_phy_stop,
-};
-
-int fe_mdio_init(struct fe_priv *priv)
-{
- struct device_node *mii_np;
- int err;
-
- if (!priv->soc->mdio_read || !priv->soc->mdio_write)
- return 0;
-
- spin_lock_init(&phy_ralink.lock);
- priv->phy = &phy_ralink;
-
- mii_np = of_get_child_by_name(priv->device->of_node, "mdio-bus");
- if (!mii_np) {
- dev_err(priv->device, "no %s child node found", "mdio-bus");
- return -ENODEV;
- }
-
- if (!of_device_is_available(mii_np)) {
- err = 0;
- goto err_put_node;
- }
-
- priv->mii_bus = mdiobus_alloc();
- if (priv->mii_bus == NULL) {
- err = -ENOMEM;
- goto err_put_node;
- }
-
- priv->mii_bus->name = "mdio";
- priv->mii_bus->read = priv->soc->mdio_read;
- priv->mii_bus->write = priv->soc->mdio_write;
- priv->mii_bus->reset = fe_mdio_reset;
- priv->mii_bus->priv = priv;
- priv->mii_bus->parent = priv->device;
-
- snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s", mii_np->name);
- err = of_mdiobus_register(priv->mii_bus, mii_np);
- if (err)
- goto err_free_bus;
-
- return 0;
-
-err_free_bus:
- kfree(priv->mii_bus);
-err_put_node:
- of_node_put(mii_np);
- priv->mii_bus = NULL;
- return err;
-}
-
-void fe_mdio_cleanup(struct fe_priv *priv)
-{
- if (!priv->mii_bus)
- return;
-
- mdiobus_unregister(priv->mii_bus);
- of_node_put(priv->mii_bus->dev.of_node);
- kfree(priv->mii_bus);
-}
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