1 files changed, 53 insertions, 127 deletions

diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
index 8bbe7f6..7d44340 100644
--- a/drivers/net/fec_mpc52xx.c
+++ b/drivers/net/fec_mpc52xx.c
@@ -25,6 +25,7 @@
 #include <linux/hardirq.h>
 #include <linux/delay.h>
 #include <linux/of_device.h>
+#include <linux/of_mdio.h>
 #include <linux/of_platform.h>
 
 #include <linux/netdevice.h>
@@ -43,11 +44,9 @@
 
 #define DRIVER_NAME "mpc52xx-fec"
 
-#define FEC5200_PHYADDR_NONE	(-1)
-#define FEC5200_PHYADDR_7WIRE	(-2)
-
 /* Private driver data structure */
 struct mpc52xx_fec_priv {
+	struct net_device *ndev;
 	int duplex;
 	int speed;
 	int r_irq;
@@ -59,10 +58,11 @@ struct mpc52xx_fec_priv {
 	int msg_enable;
 
 	/* MDIO link details */
-	int phy_addr;
-	unsigned int phy_speed;
+	unsigned int mdio_speed;
+	struct device_node *phy_node;
 	struct phy_device *phydev;
 	enum phy_state link;
+	int seven_wire_mode;
 };
 
 
@@ -211,85 +211,25 @@ static void mpc52xx_fec_adjust_link(struct net_device *dev)
 		phy_print_status(phydev);
 }
 
-static int mpc52xx_fec_init_phy(struct net_device *dev)
-{
-	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
-	struct phy_device *phydev;
-	char phy_id[BUS_ID_SIZE];
-
-	snprintf(phy_id, sizeof(phy_id), "%x:%02x",
-			(unsigned int)dev->base_addr, priv->phy_addr);
-
-	priv->link = PHY_DOWN;
-	priv->speed = 0;
-	priv->duplex = -1;
-
-	phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII);
-	if (IS_ERR(phydev)) {
-		dev_err(&dev->dev, "phy_connect failed\n");
-		return PTR_ERR(phydev);
-	}
-	dev_info(&dev->dev, "attached phy %i to driver %s\n",
-			phydev->addr, phydev->drv->name);
-
-	priv->phydev = phydev;
-
-	return 0;
-}
-
-static int mpc52xx_fec_phy_start(struct net_device *dev)
-{
-	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
-	int err;
-
-	if (priv->phy_addr < 0)
-		return 0;
-
-	err = mpc52xx_fec_init_phy(dev);
-	if (err) {
-		dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n");
-		return err;
-	}
-
-	/* reset phy - this also wakes it from PDOWN */
-	phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
-	phy_start(priv->phydev);
-
-	return 0;
-}
-
-static void mpc52xx_fec_phy_stop(struct net_device *dev)
-{
-	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
-
-	if (!priv->phydev)
-		return;
-
-	phy_disconnect(priv->phydev);
-	/* power down phy */
-	phy_stop(priv->phydev);
-	phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN);
-}
-
-static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv)
-{
-	struct mpc52xx_fec __iomem *fec = priv->fec;
-
-	if (priv->phydev)
-		return;
-
-	out_be32(&fec->mii_speed, priv->phy_speed);
-}
-
 static int mpc52xx_fec_open(struct net_device *dev)
 {
 	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 	int err = -EBUSY;
 
+	if (priv->phy_node) {
+		priv->phydev = of_phy_connect(priv->ndev, priv->phy_node,
+					      mpc52xx_fec_adjust_link, 0, 0);
+		if (!priv->phydev) {
+			dev_err(&dev->dev, "of_phy_connect failed\n");
+			return -ENODEV;
+		}
+		phy_start(priv->phydev);
+	}
+
 	if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_SHARED,
 	                DRIVER_NAME "_ctrl", dev)) {
 		dev_err(&dev->dev, "ctrl interrupt request failed\n");
-		goto out;
+		goto free_phy;
 	}
 	if (request_irq(priv->r_irq, &mpc52xx_fec_rx_interrupt, 0,
 	                DRIVER_NAME "_rx", dev)) {
@@ -311,10 +251,6 @@ static int mpc52xx_fec_open(struct net_device *dev)
 		goto free_irqs;
 	}
 
-	err = mpc52xx_fec_phy_start(dev);
-	if (err)
-		goto free_skbs;
-
 	bcom_enable(priv->rx_dmatsk);
 	bcom_enable(priv->tx_dmatsk);
 
@@ -324,16 +260,18 @@ static int mpc52xx_fec_open(struct net_device *dev)
 
 	return 0;
 
- free_skbs:
-	mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
-
  free_irqs:
 	free_irq(priv->t_irq, dev);
  free_2irqs:
 	free_irq(priv->r_irq, dev);
  free_ctrl_irq:
 	free_irq(dev->irq, dev);
- out:
+ free_phy:
+	if (priv->phydev) {
+		phy_stop(priv->phydev);
+		phy_disconnect(priv->phydev);
+		priv->phydev = NULL;
+	}
 
 	return err;
 }
@@ -352,7 +290,12 @@ static int mpc52xx_fec_close(struct net_device *dev)
 	free_irq(priv->r_irq, dev);
 	free_irq(priv->t_irq, dev);
 
-	mpc52xx_fec_phy_stop(dev);
+	if (priv->phydev) {
+		/* power down phy */
+		phy_stop(priv->phydev);
+		phy_disconnect(priv->phydev);
+		priv->phydev = NULL;
+	}
 
 	return 0;
 }
@@ -696,7 +639,7 @@ static void mpc52xx_fec_hw_init(struct net_device *dev)
 	/* set phy speed.
 	 * this can't be done in phy driver, since it needs to be called
 	 * before fec stuff (even on resume) */
-	mpc52xx_fec_phy_hw_init(priv);
+	out_be32(&fec->mii_speed, priv->mdio_speed);
 }
 
 /**
@@ -732,7 +675,7 @@ static void mpc52xx_fec_start(struct net_device *dev)
 	rcntrl = FEC_RX_BUFFER_SIZE << 16;	/* max frame length */
 	rcntrl |= FEC_RCNTRL_FCE;
 
-	if (priv->phy_addr != FEC5200_PHYADDR_7WIRE)
+	if (!priv->seven_wire_mode)
 		rcntrl |= FEC_RCNTRL_MII_MODE;
 
 	if (priv->duplex == DUPLEX_FULL)
@@ -798,8 +741,6 @@ static void mpc52xx_fec_stop(struct net_device *dev)
 
 	/* Stop FEC */
 	out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN);
-
-	return;
 }
 
 /* reset fec and bestcomm tasks */
@@ -817,9 +758,11 @@ static void mpc52xx_fec_reset(struct net_device *dev)
 
 	mpc52xx_fec_hw_init(dev);
 
-	phy_stop(priv->phydev);
-	phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
-	phy_start(priv->phydev);
+	if (priv->phydev) {
+		phy_stop(priv->phydev);
+		phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
+		phy_start(priv->phydev);
+	}
 
 	bcom_fec_rx_reset(priv->rx_dmatsk);
 	bcom_fec_tx_reset(priv->tx_dmatsk);
@@ -919,8 +862,6 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 	struct net_device *ndev;
 	struct mpc52xx_fec_priv *priv = NULL;
 	struct resource mem;
-	struct device_node *phy_node;
-	const phandle *phy_handle;
 	const u32 *prop;
 	int prop_size;
 
@@ -933,6 +874,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 		return -ENOMEM;
 
 	priv = netdev_priv(ndev);
+	priv->ndev = ndev;
 
 	/* Reserve FEC control zone */
 	rv = of_address_to_resource(op->node, 0, &mem);
@@ -956,6 +898,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 	ndev->ethtool_ops	= &mpc52xx_fec_ethtool_ops;
 	ndev->watchdog_timeo	= FEC_WATCHDOG_TIMEOUT;
 	ndev->base_addr		= mem.start;
+	SET_NETDEV_DEV(ndev, &op->dev);
 
 	spin_lock_init(&priv->lock);
 
@@ -1003,14 +946,9 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 	 */
 
 	/* Start with safe defaults for link connection */
-	priv->phy_addr = FEC5200_PHYADDR_NONE;
 	priv->speed = 100;
 	priv->duplex = DUPLEX_HALF;
-	priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
-
-	/* the 7-wire property means don't use MII mode */
-	if (of_find_property(op->node, "fsl,7-wire-mode", NULL))
-		priv->phy_addr = FEC5200_PHYADDR_7WIRE;
+	priv->mdio_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
 
 	/* The current speed preconfigures the speed of the MII link */
 	prop = of_get_property(op->node, "current-speed", &prop_size);
@@ -1019,43 +957,23 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 		priv->duplex = prop[1] ? DUPLEX_FULL : DUPLEX_HALF;
 	}
 
-	/* If there is a phy handle, setup link to that phy */
-	phy_handle = of_get_property(op->node, "phy-handle", &prop_size);
-	if (phy_handle && (prop_size >= sizeof(phandle))) {
-		phy_node = of_find_node_by_phandle(*phy_handle);
-		prop = of_get_property(phy_node, "reg", &prop_size);
-		if (prop && (prop_size >= sizeof(u32)))
-			if ((*prop >= 0) && (*prop < PHY_MAX_ADDR))
-				priv->phy_addr = *prop;
-		of_node_put(phy_node);
+	/* If there is a phy handle, then get the PHY node */
+	priv->phy_node = of_parse_phandle(op->node, "phy-handle", 0);
+
+	/* the 7-wire property means don't use MII mode */
+	if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) {
+		priv->seven_wire_mode = 1;
+		dev_info(&ndev->dev, "using 7-wire PHY mode\n");
 	}
 
 	/* Hardware init */
 	mpc52xx_fec_hw_init(ndev);
-
 	mpc52xx_fec_reset_stats(ndev);
 
-	SET_NETDEV_DEV(ndev, &op->dev);
-
-	/* Register the new network device */
 	rv = register_netdev(ndev);
 	if (rv < 0)
 		goto probe_error;
 
-	/* Now report the link setup */
-	switch (priv->phy_addr) {
-	 case FEC5200_PHYADDR_NONE:
-		dev_info(&ndev->dev, "Fixed speed MII link: %i%cD\n",
-			 priv->speed, priv->duplex ? 'F' : 'H');
-		break;
-	 case FEC5200_PHYADDR_7WIRE:
-		dev_info(&ndev->dev, "using 7-wire PHY mode\n");
-		break;
-	 default:
-		dev_info(&ndev->dev, "Using PHY at MDIO address %i\n",
-			 priv->phy_addr);
-	}
-
 	/* We're done ! */
 	dev_set_drvdata(&op->dev, ndev);
 
@@ -1065,6 +983,10 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
 	/* Error handling - free everything that might be allocated */
 probe_error:
 
+	if (priv->phy_node)
+		of_node_put(priv->phy_node);
+	priv->phy_node = NULL;
+
 	irq_dispose_mapping(ndev->irq);
 
 	if (priv->rx_dmatsk)
@@ -1093,6 +1015,10 @@ mpc52xx_fec_remove(struct of_device *op)
 
 	unregister_netdev(ndev);
 
+	if (priv->phy_node)
+		of_node_put(priv->phy_node);
+	priv->phy_node = NULL;
+
 	irq_dispose_mapping(ndev->irq);
 
 	bcom_fec_rx_release(priv->rx_dmatsk);