igb: Add function and pointers for 82580 low power state settings.

82580 and later parts did not have low power setting functions.  This patch
adds the specific functions, pointers and assignments for these low
power settings.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 94 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index 08bdc33..b945992 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -52,6 +52,8 @@ static s32  igb_write_phy_reg_82580(struct e1000_hw *, u32, u16);
 static s32  igb_reset_hw_82575(struct e1000_hw *);
 static s32  igb_reset_hw_82580(struct e1000_hw *);
 static s32  igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
+static s32  igb_set_d0_lplu_state_82580(struct e1000_hw *, bool);
+static s32  igb_set_d3_lplu_state_82580(struct e1000_hw *, bool);
 static s32  igb_setup_copper_link_82575(struct e1000_hw *);
 static s32  igb_setup_serdes_link_82575(struct e1000_hw *);
 static s32  igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
@@ -359,6 +361,8 @@ static s32 igb_get_invariants_82575(struct e1000_hw *hw)
 		phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_82580;
 		phy->ops.get_cable_length   = igb_get_cable_length_82580;
 		phy->ops.get_phy_info       = igb_get_phy_info_82580;
+		phy->ops.set_d0_lplu_state  = igb_set_d0_lplu_state_82580;
+		phy->ops.set_d3_lplu_state  = igb_set_d3_lplu_state_82580;
 		break;
 	default:
 		return -E1000_ERR_PHY;
@@ -674,6 +678,96 @@ out:
 }
 
 /**
+ *  igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state
+ *  @hw: pointer to the HW structure
+ *  @active: true to enable LPLU, false to disable
+ *
+ *  Sets the LPLU D0 state according to the active flag.  When
+ *  activating LPLU this function also disables smart speed
+ *  and vice versa.  LPLU will not be activated unless the
+ *  device autonegotiation advertisement meets standards of
+ *  either 10 or 10/100 or 10/100/1000 at all duplexes.
+ *  This is a function pointer entry point only called by
+ *  PHY setup routines.
+ **/
+static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val = 0;
+	u16 data;
+
+	data = rd32(E1000_82580_PHY_POWER_MGMT);
+
+	if (active) {
+		data |= E1000_82580_PM_D0_LPLU;
+
+		/* When LPLU is enabled, we should disable SmartSpeed */
+		data &= ~E1000_82580_PM_SPD;
+	} else {
+		data &= ~E1000_82580_PM_D0_LPLU;
+
+		/*
+		 * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
+		 * during Dx states where the power conservation is most
+		 * important.  During driver activity we should enable
+		 * SmartSpeed, so performance is maintained.
+		 */
+		if (phy->smart_speed == e1000_smart_speed_on)
+			data |= E1000_82580_PM_SPD;
+		else if (phy->smart_speed == e1000_smart_speed_off)
+			data &= ~E1000_82580_PM_SPD; }
+
+	wr32(E1000_82580_PHY_POWER_MGMT, data);
+	return ret_val;
+}
+
+/**
+ *  igb_set_d3_lplu_state_82580 - Sets low power link up state for D3
+ *  @hw: pointer to the HW structure
+ *  @active: boolean used to enable/disable lplu
+ *
+ *  Success returns 0, Failure returns 1
+ *
+ *  The low power link up (lplu) state is set to the power management level D3
+ *  and SmartSpeed is disabled when active is true, else clear lplu for D3
+ *  and enable Smartspeed.  LPLU and Smartspeed are mutually exclusive.  LPLU
+ *  is used during Dx states where the power conservation is most important.
+ *  During driver activity, SmartSpeed should be enabled so performance is
+ *  maintained.
+ **/
+s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active)
+{
+	struct e1000_phy_info *phy = &hw->phy;
+	s32 ret_val = 0;
+	u16 data;
+
+	data = rd32(E1000_82580_PHY_POWER_MGMT);
+
+	if (!active) {
+		data &= ~E1000_82580_PM_D3_LPLU;
+		/*
+		 * LPLU and SmartSpeed are mutually exclusive.  LPLU is used
+		 * during Dx states where the power conservation is most
+		 * important.  During driver activity we should enable
+		 * SmartSpeed, so performance is maintained.
+		 */
+		if (phy->smart_speed == e1000_smart_speed_on)
+			data |= E1000_82580_PM_SPD;
+		else if (phy->smart_speed == e1000_smart_speed_off)
+			data &= ~E1000_82580_PM_SPD;
+	} else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
+		   (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
+		   (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
+		data |= E1000_82580_PM_D3_LPLU;
+		/* When LPLU is enabled, we should disable SmartSpeed */
+		data &= ~E1000_82580_PM_SPD;
+	}
+
+	wr32(E1000_82580_PHY_POWER_MGMT, data);
+	return ret_val;
+}
+
+/**
  *  igb_acquire_nvm_82575 - Request for access to EEPROM
  *  @hw: pointer to the HW structure
  *