1 files changed, 38 insertions, 16 deletions

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 3c0c35ecea10..b5b443883da9 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2256,6 +2256,30 @@ static void igb_enable_mas(struct igb_adapter *adapter)
 	}
 }
 
+#ifdef CONFIG_IGB_HWMON
+/**
+ *  igb_set_i2c_bb - Init I2C interface
+ *  @hw: pointer to hardware structure
+ **/
+static void igb_set_i2c_bb(struct e1000_hw *hw)
+{
+	u32 ctrl_ext;
+	s32 i2cctl;
+
+	ctrl_ext = rd32(E1000_CTRL_EXT);
+	ctrl_ext |= E1000_CTRL_I2C_ENA;
+	wr32(E1000_CTRL_EXT, ctrl_ext);
+	wrfl();
+
+	i2cctl = rd32(E1000_I2CPARAMS);
+	i2cctl |= E1000_I2CBB_EN
+		| E1000_I2C_CLK_OE_N
+		| E1000_I2C_DATA_OE_N;
+	wr32(E1000_I2CPARAMS, i2cctl);
+	wrfl();
+}
+#endif
+
 void igb_reset(struct igb_adapter *adapter)
 {
 	struct pci_dev *pdev = adapter->pdev;
@@ -2400,7 +2424,8 @@ void igb_reset(struct igb_adapter *adapter)
 			 * interface.
 			 */
 			if (adapter->ets)
-				mac->ops.init_thermal_sensor_thresh(hw);
+				igb_set_i2c_bb(hw);
+			mac->ops.init_thermal_sensor_thresh(hw);
 		}
 	}
 #endif
@@ -3117,21 +3142,12 @@ static void igb_init_mas(struct igb_adapter *adapter)
  **/
 static s32 igb_init_i2c(struct igb_adapter *adapter)
 {
-	struct e1000_hw *hw = &adapter->hw;
 	s32 status = 0;
-	s32 i2cctl;
 
 	/* I2C interface supported on i350 devices */
 	if (adapter->hw.mac.type != e1000_i350)
 		return 0;
 
-	i2cctl = rd32(E1000_I2CPARAMS);
-	i2cctl |= E1000_I2CBB_EN
-		| E1000_I2C_CLK_OUT | E1000_I2C_CLK_OE_N
-		| E1000_I2C_DATA_OUT | E1000_I2C_DATA_OE_N;
-	wr32(E1000_I2CPARAMS, i2cctl);
-	wrfl();
-
 	/* Initialize the i2c bus which is controlled by the registers.
 	 * This bus will use the i2c_algo_bit structure that implements
 	 * the protocol through toggling of the 4 bits in the register.
@@ -3521,6 +3537,12 @@ static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 			adapter->ets = true;
 		else
 			adapter->ets = false;
+		/* Only enable I2C bit banging if an external thermal
+		 * sensor is supported.
+		 */
+		if (adapter->ets)
+			igb_set_i2c_bb(hw);
+		hw->mac.ops.init_thermal_sensor_thresh(hw);
 		if (igb_sysfs_init(adapter))
 			dev_err(&pdev->dev,
 				"failed to allocate sysfs resources\n");
@@ -6794,7 +6816,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	struct timespec64 ts;
 	u32 tsauxc;
 
-	if (pin < 0 || pin >= IGB_N_PEROUT)
+	if (pin < 0 || pin >= IGB_N_SDP)
 		return;
 
 	spin_lock(&adapter->tmreg_lock);
@@ -6802,7 +6824,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	if (hw->mac.type == e1000_82580 ||
 	    hw->mac.type == e1000_i354 ||
 	    hw->mac.type == e1000_i350) {
-		s64 ns = timespec64_to_ns(&adapter->perout[pin].period);
+		s64 ns = timespec64_to_ns(&adapter->perout[tsintr_tt].period);
 		u32 systiml, systimh, level_mask, level, rem;
 		u64 systim, now;
 
@@ -6850,8 +6872,8 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 		ts.tv_nsec = (u32)systim;
 		ts.tv_sec  = ((u32)(systim >> 32)) & 0xFF;
 	} else {
-		ts = timespec64_add(adapter->perout[pin].start,
-				    adapter->perout[pin].period);
+		ts = timespec64_add(adapter->perout[tsintr_tt].start,
+				    adapter->perout[tsintr_tt].period);
 	}
 
 	/* u32 conversion of tv_sec is safe until y2106 */
@@ -6860,7 +6882,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	tsauxc = rd32(E1000_TSAUXC);
 	tsauxc |= TSAUXC_EN_TT0;
 	wr32(E1000_TSAUXC, tsauxc);
-	adapter->perout[pin].start = ts;
+	adapter->perout[tsintr_tt].start = ts;
 
 	spin_unlock(&adapter->tmreg_lock);
 }
@@ -6874,7 +6896,7 @@ static void igb_extts(struct igb_adapter *adapter, int tsintr_tt)
 	struct ptp_clock_event event;
 	struct timespec64 ts;
 
-	if (pin < 0 || pin >= IGB_N_EXTTS)
+	if (pin < 0 || pin >= IGB_N_SDP)
 		return;
 
 	if (hw->mac.type == e1000_82580 ||