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falco: Drive GPIO59/LTE_DISABLE_L low on S3/S5

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Try to prevent WWAN from causing spurious wakes.

BUG=chrome-os-partner:20832
BRANCH=falco
TEST=emerge-falco chromeos-coreboot-falco

Change-Id: Ifcc44063de0eb1634cab9dd244737071568e3455
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/63987
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Duncan Laurie 2013-07-31 14:08:59 -07:00 • committed by ChromeBot
commit a3d4e65f58
1 changed files with 5 additions and 0 deletions
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5
src/mainboard/google/falco/smihandler.c
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@ -34,6 +34,7 @@
/* GPIO46 controls the WLAN_DISABLE_L signal. */
#define GPIO_WLAN_DISABLE_L 46
#define GPIO_LTE_DISABLE_L 59
int mainboard_io_trap_handler(int smif)
{
@ -104,6 +105,8 @@ void mainboard_smi_sleep(u8 slp_typ)
/* Prevent leak from standby rail to WLAN rail in S3. */
set_gpio(GPIO_WLAN_DISABLE_L, 0);
/* Disable LTE */
set_gpio(GPIO_LTE_DISABLE_L, 0);
break;
case 5:
if (smm_get_gnvs()->s5u0 == 0)
@ -115,6 +118,8 @@ void mainboard_smi_sleep(u8 slp_typ)
/* Prevent leak from standby rail to WLAN rail in S5. */
set_gpio(GPIO_WLAN_DISABLE_L, 0);
/* Disable LTE */
set_gpio(GPIO_LTE_DISABLE_L, 0);
break;
}