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glados: Power-off PP1800_DX_AUDIO during S3

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Save .2mA during S3 by de-powering PP1800_DX_AUDIO.

BUG=chrome-os-partner:45091
TEST=Boot glados, go to S3 and verify PP1800_DX_AUDIO_EN is low. Go to
S0 and verify PP1800_DX_AUDIO_EN is high. Boot with locked descriptor
and try to overwrite descriptor region, verify that flashrom errors out.
BRANCH=None

Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: If05142ad7c39847a8e94e26d047daa2bc71f0ca5
Reviewed-on: https://chromium-review.googlesource.com/299003
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
This commit is contained in:
Shawn Nematbakhsh
2015-09-10 11:44:32 -07:00
committed by chrome-bot
parent 8acda59faa
commit b3cd77eca5
1 changed files with 2 additions and 2 deletions
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4
board/glados/board.c
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@@ -329,7 +329,6 @@ DECLARE_DEFERRED(enable_input_devices);
/* Called on AP S5 -> S3 transition */
static void board_chipset_startup(void)
{
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 1);
hook_call_deferred(enable_input_devices, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
@@ -337,7 +336,6 @@ DECLARE_HOOK(HOOK_CHIPSET_STARTUP, board_chipset_startup, HOOK_PRIO_DEFAULT);
/* Called on AP S3 -> S5 transition */
static void board_chipset_shutdown(void)
{
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 0);
hook_call_deferred(enable_input_devices, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
@@ -345,6 +343,7 @@ DECLARE_HOOK(HOOK_CHIPSET_SHUTDOWN, board_chipset_shutdown, HOOK_PRIO_DEFAULT);
/* Called on AP S3 -> S0 transition */
static void board_chipset_resume(void)
{
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 1);
gpio_set_level(GPIO_PP1800_DX_SENSOR_EN, 1);
}
DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
@@ -352,6 +351,7 @@ DECLARE_HOOK(HOOK_CHIPSET_RESUME, board_chipset_resume, HOOK_PRIO_DEFAULT);
/* Called on AP S0 -> S3 transition */
static void board_chipset_suspend(void)
{
gpio_set_level(GPIO_PP1800_DX_AUDIO_EN, 0);
gpio_set_level(GPIO_PP1800_DX_SENSOR_EN, 0);
}
DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, board_chipset_suspend, HOOK_PRIO_DEFAULT);