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[POWERPC] mpc5200: Allow for fixed speed MII configurations

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Various improvements for configuring the MPC5200 MII link from the
device tree:
* Look for 'current-speed' property for fixed speed MII links
* Look for 'fsl,7-wire-mode' property for boards using the 7 wire mode
* move definition of private data structure out of the header file

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
This commit is contained in:
Grant Likely
2008-05-01 11:05:58 -06:00
parent eabd90944b
commit 80791be111
3 changed files with 84 additions and 41 deletions
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95
drivers/net/fec_mpc52xx.c
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@@ -43,6 +43,29 @@
#define DRIVER_NAME "mpc52xx-fec"
#define FEC5200_PHYADDR_NONE (-1)
#define FEC5200_PHYADDR_7WIRE (-2)
/* Private driver data structure */
struct mpc52xx_fec_priv {
int duplex;
int speed;
int r_irq;
int t_irq;
struct mpc52xx_fec __iomem *fec;
struct bcom_task *rx_dmatsk;
struct bcom_task *tx_dmatsk;
spinlock_t lock;
int msg_enable;
/* MDIO link details */
int phy_addr;
unsigned int phy_speed;
struct phy_device *phydev;
enum phy_state link;
};
static irqreturn_t mpc52xx_fec_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
@@ -223,7 +246,7 @@ static int mpc52xx_fec_phy_start(struct net_device *dev)
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
int err;
if (!priv->has_phy)
if (priv->phy_addr < 0)
return 0;
err = mpc52xx_fec_init_phy(dev);
@@ -243,7 +266,7 @@ static void mpc52xx_fec_phy_stop(struct net_device *dev)
{
struct mpc52xx_fec_priv *priv = netdev_priv(dev);
if (!priv->has_phy)
if (!priv->phydev)
return;
phy_disconnect(priv->phydev);
@@ -255,7 +278,7 @@ static void mpc52xx_fec_phy_stop(struct net_device *dev)
static int mpc52xx_fec_phy_mii_ioctl(struct mpc52xx_fec_priv *priv,
struct mii_ioctl_data *mii_data, int cmd)
{
if (!priv->has_phy)
if (!priv->phydev)
return -ENOTSUPP;
return phy_mii_ioctl(priv->phydev, mii_data, cmd);
@@ -265,7 +288,7 @@ static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv)
{
struct mpc52xx_fec __iomem *fec = priv->fec;
if (!priv->has_phy)
if (priv->phydev)
return;
out_be32(&fec->mii_speed, priv->phy_speed);
@@ -704,7 +727,7 @@ static void mpc52xx_fec_start(struct net_device *dev)
rcntrl = FEC_RX_BUFFER_SIZE << 16; /* max frame length */
rcntrl |= FEC_RCNTRL_FCE;
if (priv->has_phy)
if (priv->phy_addr != FEC5200_PHYADDR_7WIRE)
rcntrl |= FEC_RCNTRL_MII_MODE;
if (priv->duplex == DUPLEX_FULL)
@@ -864,7 +887,10 @@ 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;
const phandle *ph;
struct device_node *phy_node;
const phandle *phy_handle;
const u32 *prop;
int prop_size;
phys_addr_t rx_fifo;
phys_addr_t tx_fifo;
@@ -948,26 +974,37 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
mpc52xx_fec_get_paddr(ndev, ndev->dev_addr);
priv->msg_enable = netif_msg_init(debug, MPC52xx_MESSAGES_DEFAULT);
priv->duplex = DUPLEX_FULL;
/* is the phy present in device tree? */
ph = of_get_property(op->node, "phy-handle", NULL);
if (ph) {
const unsigned int *prop;
struct device_node *phy_dn;
priv->has_phy = 1;
/*
* Link mode configuration
*/
phy_dn = of_find_node_by_phandle(*ph);
prop = of_get_property(phy_dn, "reg", NULL);
priv->phy_addr = *prop;
/* 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;
of_node_put(phy_dn);
/* 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;
/* Phy speed */
priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
} else {
dev_info(&ndev->dev, "can't find \"phy-handle\" in device"
" tree, using 7-wire mode\n");
/* The current speed preconfigures the speed of the MII link */
prop = of_get_property(op->node, "current-speed", &prop_size);
if (prop && (prop_size >= sizeof(u32) * 2)) {
priv->speed = prop[0];
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);
}
/* Hardware init */
@@ -982,6 +1019,20 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
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);