atl1: add PHY power save mode

Using vendor-provided magic, add code to enter power save mode
on the PHY.  We'll need this for suspend and wake-on-lan.

Signed-off-by: Jay Cliburn <jacliburn@bellsouth.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 8 insertions, 11 deletions

diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index 0afe522b8f7b..3beb44e80ba0 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -638,21 +638,18 @@ static s32 atl1_phy_leave_power_saving(struct atl1_hw *hw)
 }
 
 /*
- *TODO: do something or get rid of this
+ * Force the PHY into power saving mode using vendor magic.
  */
 #ifdef CONFIG_PM
-static s32 atl1_phy_enter_power_saving(struct atl1_hw *hw)
+static void atl1_phy_enter_power_saving(struct atl1_hw *hw)
 {
-/*    s32 ret_val;
- *    u16 phy_data;
- */
+        atl1_write_phy_reg(hw, MII_DBG_ADDR, 0);
+        atl1_write_phy_reg(hw, MII_DBG_DATA, 0x124E);
+        atl1_write_phy_reg(hw, MII_DBG_ADDR, 2);
+        atl1_write_phy_reg(hw, MII_DBG_DATA, 0x3000);
+        atl1_write_phy_reg(hw, MII_DBG_ADDR, 3);
+        atl1_write_phy_reg(hw, MII_DBG_DATA, 0);
 
-/*
-    ret_val = atl1_write_phy_reg(hw, ...);
-    ret_val = atl1_write_phy_reg(hw, ...);
-    ....
-*/
-        return 0;
 }
 #endif