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e1000: fix VR powerdown code 

On ich systems during PHY power down to D3, the voltage regulators
were left on.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jeff Kirsher 2006-11-01 08:47:44 -08:00 committed by Jeff Garzik
parent 2ce9047f5d
commit 070f6ffbb8
2 changed files with 6 additions and 4 deletions
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9
drivers/net/e1000/e1000_hw.c
View File

@ -3942,14 +3942,15 @@ e1000_phy_powerdown_workaround(struct e1000_hw *hw)
E1000_WRITE_REG(hw, PHY_CTRL, reg | E1000_PHY_CTRL_GBE_DISABLE |
E1000_PHY_CTRL_NOND0A_GBE_DISABLE);
/* Write VR power-down enable */
/* Write VR power-down enable - bits 9:8 should be 10b */
e1000_read_phy_reg(hw, IGP3_VR_CTRL, &phy_data);
e1000_write_phy_reg(hw, IGP3_VR_CTRL, phy_data |
IGP3_VR_CTRL_MODE_SHUT);
phy_data |= (1 << 9);
phy_data &= ~(1 << 8);
e1000_write_phy_reg(hw, IGP3_VR_CTRL, phy_data);
/* Read it back and test */
e1000_read_phy_reg(hw, IGP3_VR_CTRL, &phy_data);
if ((phy_data & IGP3_VR_CTRL_MODE_SHUT) || retry)
if (((phy_data & IGP3_VR_CTRL_MODE_MASK) == IGP3_VR_CTRL_MODE_SHUT) || retry)
break;
/* Issue PHY reset and repeat at most one more time */

1
drivers/net/e1000/e1000_hw.h
View File

@ -3173,6 +3173,7 @@ struct e1000_host_command_info {
#define IGP3_VR_CTRL \
PHY_REG(776, 18) /* Voltage regulator control register */
#define IGP3_VR_CTRL_MODE_SHUT 0x0200 /* Enter powerdown, shutdown VRs */
#define IGP3_VR_CTRL_MODE_MASK 0x0300 /* Shutdown VR Mask */
#define IGP3_CAPABILITY \
PHY_REG(776, 19) /* IGP3 Capability Register */