Commit 52fbc100 authored by Jie Yang's avatar Jie Yang Committed by David S. Miller
Browse files

atl1c: disable L1/L0s when link detected 



Disable L1/L0s when link detected. We enable L1/L0s when link connected
before, but there is some hareware error on some platform. So just diable
this feature when link connected. This feature is about power saving.

Signed-off-by: default avatarJie Yang <jie.yang@atheros.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 36e7b1b8

drivers/net/atl1c/atl1c_main.c

+7 −17
Original line number Diff line number Diff line
@@ -220,11 +220,11 @@ static void atl1c_check_link_status(struct atl1c_adapter *adapter) 
		/* link down */

		if (netif_carrier_ok(netdev)) {

			hw->hibernate = true;

			atl1c_set_aspm(hw, false);

			if (atl1c_stop_mac(hw) != 0)

				if (netif_msg_hw(adapter))

					dev_warn(&pdev->dev,

						"stop mac failed\n");

			atl1c_set_aspm(hw, false);

		}

		netif_carrier_off(netdev);

	} else {
@@ -240,10 +240,10 @@ static void atl1c_check_link_status(struct atl1c_adapter *adapter) 
		    adapter->link_duplex != duplex) {

			adapter->link_speed  = speed;

			adapter->link_duplex = duplex;

			atl1c_set_aspm(hw, true);

			atl1c_enable_tx_ctrl(hw);

			atl1c_enable_rx_ctrl(hw);

			atl1c_setup_mac_ctrl(adapter);

			atl1c_set_aspm(hw, true);

			if (netif_msg_link(adapter))

				dev_info(&pdev->dev,

					"%s: %s NIC Link is Up<%d Mbps %s>\n",
@@ -1242,9 +1242,7 @@ static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup) 


	AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data);



	pm_ctrl_data &= PM_CTRL_SERDES_PD_EX_L1;

	pm_ctrl_data |= ~PM_CTRL_SERDES_BUDS_RX_L1_EN;

	pm_ctrl_data |= ~PM_CTRL_SERDES_L1_EN;

	pm_ctrl_data &= ~PM_CTRL_SERDES_PD_EX_L1;

	pm_ctrl_data &=  ~(PM_CTRL_L1_ENTRY_TIMER_MASK <<

			PM_CTRL_L1_ENTRY_TIMER_SHIFT);
@@ -1254,19 +1252,11 @@ static void atl1c_set_aspm(struct atl1c_hw *hw, bool linkup) 
		pm_ctrl_data |= PM_CTRL_SERDES_PLL_L1_EN;

		pm_ctrl_data &= ~PM_CTRL_CLK_SWH_L1;



		if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT) {

			pm_ctrl_data |= AT_ASPM_L1_TIMER <<

				PM_CTRL_L1_ENTRY_TIMER_SHIFT;

			pm_ctrl_data |= PM_CTRL_ASPM_L1_EN;

		} else

			pm_ctrl_data &= ~PM_CTRL_ASPM_L1_EN;



		if (hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT)

			pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN;

		else

			pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;



		pm_ctrl_data |= PM_CTRL_SERDES_BUDS_RX_L1_EN;

		pm_ctrl_data |= PM_CTRL_SERDES_L1_EN;

	} else {

		pm_ctrl_data &= ~PM_CTRL_SERDES_BUDS_RX_L1_EN;

		pm_ctrl_data &= ~PM_CTRL_SERDES_L1_EN;

		pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;

		pm_ctrl_data &= ~PM_CTRL_SERDES_PLL_L1_EN;

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