e1000e: provide family-specific PHY power up/down operations

The different families (80003es2lan, 8257x, ICHx/PCH) supported by the
driver each have their own conditions when the PHY can be powered down.
This patch rewrites the PHY power up/down code to fit with the family-
specific style used in the driver.  All pre-existing calls to power up or
down the PHY remain untouched.  A new call to power down the PHY when
removing the driver when the interface is down replaces the current call
to reset the PHY in order to reduce power consumption.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index 8ea3ed7e5364..26ea5d57a354 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -69,6 +69,7 @@ static void e1000_clear_vfta_82571(struct e1000_hw *hw);
 static bool e1000_check_mng_mode_82574(struct e1000_hw *hw);
 static s32 e1000_led_on_82574(struct e1000_hw *hw);
 static void e1000_put_hw_semaphore_82571(struct e1000_hw *hw);
+static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw);
 
 /**
  *  e1000_init_phy_params_82571 - Init PHY func ptrs.
@@ -88,6 +89,9 @@ static s32 e1000_init_phy_params_82571(struct e1000_hw *hw)
         phy->autoneg_mask                = AUTONEG_ADVERTISE_SPEED_DEFAULT;
         phy->reset_delay_us              = 100;
 
+        phy->ops.power_up                = e1000_power_up_phy_copper;
+        phy->ops.power_down              = e1000_power_down_phy_copper_82571;
+
         switch (hw->mac.type) {
         case e1000_82571:
         case e1000_82572:
@@ -1601,6 +1605,28 @@ static s32 e1000_fix_nvm_checksum_82571(struct e1000_hw *hw)
 }
 
 /**
+ * e1000_power_down_phy_copper_82571 - Remove link during PHY power down
+ * @hw: pointer to the HW structure
+ *
+ * In the case of a PHY power down to save power, or to turn off link during a
+ * driver unload, or wake on lan is not enabled, remove the link.
+ **/
+static void e1000_power_down_phy_copper_82571(struct e1000_hw *hw)
+{
+        struct e1000_phy_info *phy = &hw->phy;
+        struct e1000_mac_info *mac = &hw->mac;
+
+        if (!(phy->ops.check_reset_block))
+                return;
+
+        /* If the management interface is not enabled, then power down */
+        if (!(mac->ops.check_mng_mode(hw) || phy->ops.check_reset_block(hw)))
+                e1000_power_down_phy_copper(hw);
+
+        return;
+}
+
+/**
  *  e1000_clear_hw_cntrs_82571 - Clear device specific hardware counters
  *  @hw: pointer to the HW structure
  *