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atl1c: disable L1/L0s when link detected

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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: Jie Yang <jie.yang@atheros.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jie Yang 2009-04-27 19:42:03 +00:00 committed by David S. Miller
parent 36e7b1b8da
commit 52fbc1007e
1 changed files with 7 additions and 17 deletions
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24
drivers/net/atl1c/atl1c_main.c
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@ -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;