1 files changed, 275 insertions, 0 deletions
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mdio.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/mdio.c
new file mode 100644
index 0000000..62db11a
--- /dev/null
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mdio.c
@@ -0,0 +1,275 @@
+/*
+ *   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);
+}