From: Jeff Kirsher Date: Wed, 1 Nov 2006 16:47:44 +0000 (-0800) Subject: e1000: fix VR powerdown code X-Git-Tag: v2.6.20-rc2~6^2~13^2~468^2~84 X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=070f6ffbb8ed5c398e84f1508752b8fd15b05cf2;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c index 29e6f6aba9e..0e2ccf50d4d 100644 --- a/drivers/net/e1000/e1000_hw.c +++ b/drivers/net/e1000/e1000_hw.c @@ -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 */ diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h index b32a0c3cfd1..31bea321584 100644 --- a/drivers/net/e1000/e1000_hw.h +++ b/drivers/net/e1000/e1000_hw.h @@ -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 */