From: Wade Farnsworth <wfarnsworth@mvista.com>
Date: Tue, 4 Oct 2005 02:21:33 +0000 (-0400)
Subject: [PATCH] emac: add support for platform-specific unsupported PHY features
X-Git-Tag: v2.6.14-rc4~63
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=49a9db07abd4ac89693dbd4dcd92fcd1f30ece00;p=linux-2.6

[PATCH] emac: add support for platform-specific unsupported PHY features

This patch adds support to the ibm_emac driver for platform-specific
unsupported PHY features.

The patch attempts to determine the highest speed and duplex when
autonegotiation is unsupported.

Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
---

diff --git a/drivers/net/ibm_emac/ibm_emac_core.c b/drivers/net/ibm_emac/ibm_emac_core.c
index 0de3bb9061..14e9b6315f 100644
--- a/drivers/net/ibm_emac/ibm_emac_core.c
+++ b/drivers/net/ibm_emac/ibm_emac_core.c
@@ -1875,6 +1875,9 @@ static int emac_init_device(struct ocp_device *ocpdev, struct ibm_ocp_mal *mal)
 		rc = -ENODEV;
 		goto bail;
 	}
+	
+	/* Disable any PHY features not supported by the platform */
+	ep->phy_mii.def->features &= ~emacdata->phy_feat_exc;
 
 	/* Setup initial PHY config & startup aneg */
 	if (ep->phy_mii.def->ops->init)
@@ -1882,6 +1885,34 @@ static int emac_init_device(struct ocp_device *ocpdev, struct ibm_ocp_mal *mal)
 	netif_carrier_off(ndev);
 	if (ep->phy_mii.def->features & SUPPORTED_Autoneg)
 		ep->want_autoneg = 1;
+	else {
+		ep->want_autoneg = 0;
+		
+		/* Select highest supported speed/duplex */
+		if (ep->phy_mii.def->features & SUPPORTED_1000baseT_Full) {
+			ep->phy_mii.speed = SPEED_1000;
+			ep->phy_mii.duplex = DUPLEX_FULL;
+		} else if (ep->phy_mii.def->features & 
+			   SUPPORTED_1000baseT_Half) {
+			ep->phy_mii.speed = SPEED_1000;
+			ep->phy_mii.duplex = DUPLEX_HALF;
+		} else if (ep->phy_mii.def->features & 
+			   SUPPORTED_100baseT_Full) {
+			ep->phy_mii.speed = SPEED_100;
+			ep->phy_mii.duplex = DUPLEX_FULL;
+		} else if (ep->phy_mii.def->features & 
+			   SUPPORTED_100baseT_Half) {
+			ep->phy_mii.speed = SPEED_100;
+			ep->phy_mii.duplex = DUPLEX_HALF;
+		} else if (ep->phy_mii.def->features & 
+			   SUPPORTED_10baseT_Full) {
+			ep->phy_mii.speed = SPEED_10;
+			ep->phy_mii.duplex = DUPLEX_FULL;
+		} else {
+			ep->phy_mii.speed = SPEED_10;
+			ep->phy_mii.duplex = DUPLEX_HALF;
+		}
+	}
 	emac_start_link(ep, NULL);
 
 	/* read the MAC Address */