[PATCH 05/11] tlan: Restart autonegotiation on link loss

Ondrej Zary
2014-06-21T14:50:49Z

When link is lost on a card which uses internal PHY for 10 Mbit speeds,
restart autonegotiation to allow switching between 10 and 100 Mbps speeds.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
---
drivers/net/ethernet/ti/tlan.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index 31d4a96..47eb30e 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -2721,6 +2721,7 @@ static void tlan_phy_finish_auto_neg(struct net_device *dev)
else if (!(mode & 0x0080) && (mode & 0x0040))
priv->tlan_full_duplex = true;

+ /* switch to internal PHY for 10 Mbps */
if ((!(mode & 0x0180)) &&
(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
(priv->phy_num != 0)) {
@@ -2788,6 +2789,20 @@ static void tlan_phy_monitor(unsigned long data)
dev->name);
tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
netif_carrier_off(dev);
+ if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
+ /* power down internal PHY */
+ u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
+ MII_GC_ISOLATE;
+ tlan_mii_sync(dev->base_addr);
+ tlan_mii_write_reg(dev, priv->phy[0],
+ MII_GEN_CTL, data);
+ /* set to external PHY */
+ priv->phy_num = 1;
+ /* restart autonegotiation */
+ tlan_set_timer(dev, 4 * HZ / 10,
+ TLAN_TIMER_PHY_PDOWN);
+ return;
+ }
}
}

--
Ondrej Zary