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ar8316: automatically detect whether port4 is used as PHY or as a switch port

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SVN-Revision: 26778
This commit is contained in:
Felix Fietkau 2011-04-28 21:27:37 +00:00
parent 36aecb08b8
commit eb270c4d33
1 changed files with 61 additions and 32 deletions
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93
target/linux/generic/files/drivers/net/phy/ar8216.c
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@ -44,6 +44,8 @@ struct ar8216_priv {
struct net_device_ops ndo;
struct mutex reg_mutex;
int chip;
bool initialized;
bool port4_phy;
/* all fields below are cleared on reset */
bool vlan;
@ -511,32 +513,24 @@ ar8216_hw_apply(struct switch_dev *dev)
static int
ar8316_hw_init(struct ar8216_priv *priv) {
static int initialized;
int i;
u32 val;
u32 val, newval;
struct mii_bus *bus;
if (initialized)
return 0;
val = priv->read(priv, 0x8);
if (priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
/* value taken from Ubiquiti RouterStation Pro */
if (val == 0x81461bea) {
/* switch already intialized by bootloader */
initialized = true;
return 0;
if (priv->port4_phy) {
/* value taken from Ubiquiti RouterStation Pro */
newval = 0x81461bea;
printk(KERN_INFO "ar8316: Using port 4 as PHY\n");
} else {
newval = 0x01261be2;
printk(KERN_INFO "ar8316: Using port 4 as switch port\n");
}
priv->write(priv, 0x8, 0x81461bea);
} else if (priv->phy->interface == PHY_INTERFACE_MODE_GMII) {
/* value taken from AVM Fritz!Box 7390 sources */
if (val == 0x010e5b71) {
/* switch already initialized by bootloader */
initialized = true;
return 0;
}
priv->write(priv, 0x8, 0x010e5b71);
newval = 0x010e5b71;
} else {
/* no known value for phy interface */
printk(KERN_ERR "ar8316: unsupported mii mode: %d.\n",
@ -544,14 +538,19 @@ ar8316_hw_init(struct ar8216_priv *priv) {
return -EINVAL;
}
if (val == newval)
goto out;
priv->write(priv, 0x8, newval);
/* standard atheros magic */
priv->write(priv, 0x38, 0xc000050e);
/* Initialize the ports */
bus = priv->phy->bus;
for (i = 0; i < 5; i++) {
if ((i == 4) &&
priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
if ((i == 4) && priv->port4_phy &&
priv->phy->interface == PHY_INTERFACE_MODE_RGMII) {
/* work around for phy4 rgmii mode */
bus->write(bus, i, MII_ATH_DBG_ADDR, 0x12);
bus->write(bus, i, MII_ATH_DBG_DATA, 0x480c);
@ -571,7 +570,9 @@ ar8316_hw_init(struct ar8216_priv *priv) {
bus->write(bus, i, MII_BMCR, BMCR_RESET | BMCR_ANENABLE);
msleep(1000);
}
initialized = true;
out:
priv->initialized = true;
return 0;
}
@ -656,33 +657,58 @@ static const struct switch_dev_ops ar8216_ops = {
static int
ar8216_config_init(struct phy_device *pdev)
{
struct ar8216_priv *priv;
struct ar8216_priv *priv = pdev->priv;
struct net_device *dev = pdev->attached_dev;
struct switch_dev *swdev;
int ret;
priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
if (!priv) {
priv = kzalloc(sizeof(struct ar8216_priv), GFP_KERNEL);
if (priv == NULL)
return -ENOMEM;
}
priv->phy = pdev;
priv->chip = ar8216_id_chip(priv);
if (pdev->addr == 0)
printk(KERN_INFO "%s: AR%d switch driver attached.\n",
pdev->attached_dev->name, priv->chip);
if (pdev->addr != 0) {
if (priv->chip == AR8316) {
pdev->supported |= SUPPORTED_1000baseT_Full;
pdev->advertising |= ADVERTISED_1000baseT_Full;
/* check if we're attaching to the switch twice */
pdev = pdev->bus->phy_map[0];
if (!pdev) {
kfree(priv);
return 0;
}
/* switch device has not been initialized, reuse priv */
if (!pdev->priv) {
priv->port4_phy = true;
pdev->priv = priv;
return 0;
}
kfree(priv);
/* switch device has been initialized, reinit */
priv = pdev->priv;
priv->dev.ports = (AR8216_NUM_PORTS - 1);
priv->initialized = false;
priv->port4_phy = true;
ar8316_hw_init(priv);
return 0;
}
kfree(priv);
return 0;
}
printk(KERN_INFO "%s: AR%d switch driver attached.\n",
pdev->attached_dev->name, priv->chip);
pdev->supported = priv->chip == AR8316 ?
SUPPORTED_1000baseT_Full : SUPPORTED_100baseT_Full;
pdev->advertising = pdev->supported;
@ -696,16 +722,19 @@ ar8216_config_init(struct phy_device *pdev)
swdev = &priv->dev;
swdev->cpu_port = AR8216_PORT_CPU;
swdev->ops = &ar8216_ops;
swdev->ports = AR8216_NUM_PORTS;
if (priv->chip == AR8316) {
swdev->name = "Atheros AR8316";
swdev->vlans = AR8X16_MAX_VLANS;
/* port 5 connected to the other mac, therefore unusable */
swdev->ports = (AR8216_NUM_PORTS - 1);
if (priv->port4_phy) {
/* port 5 connected to the other mac, therefore unusable */
swdev->ports = (AR8216_NUM_PORTS - 1);
}
} else {
swdev->name = "Atheros AR8216";
swdev->vlans = AR8216_NUM_VLANS;
swdev->ports = AR8216_NUM_PORTS;
}
if ((ret = register_switch(&priv->dev, pdev->attached_dev)) < 0) {