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| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2015-07-14 12:39:51 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-07-15 02:05:54 +0000 |
| commit | 88ef0bc44e1b3296a75e17011ae2ffb11883f8f7 (patch) | |
| tree | 0a5946a9cb59c27af293ab0aecf7f813b109b708 /power/skylake.c | |
| parent | ac1cba419ab507163dcb6dc9d6be1401f3f1f518 (diff) | |
| download | chrome-ec-88ef0bc44e1b3296a75e17011ae2ffb11883f8f7.tar.gz | |
skylake: Disable power rails and components when appropriate
- Disable USB, wireless and audio power rail when powering down from S3
- Disable sensor power rail and display backlight when powering down
from S0
BUG=chrome-os-partner:42104
TEST=Manual on Glados. Boot AP, verify that display backlight and USB
are functional.
BRANCH=None
Change-Id: I2879f57db555753b280e785df3d2cc967c152f21
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/285545
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Diffstat (limited to 'power/skylake.c')
| -rw-r--r-- | power/skylake.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/power/skylake.c b/power/skylake.c index 7ae1a3cc43..946d8e169b 100644 --- a/power/skylake.c +++ b/power/skylake.c @@ -191,8 +191,10 @@ enum power_state power_handle_state(enum power_state state) return POWER_S5G3; } - /* Enable TP so that it can wake the system */ + /* Enable TP + USB so that they can wake the system */ gpio_set_level(GPIO_ENABLE_TOUCHPAD, 1); + gpio_set_level(GPIO_USB1_ENABLE, 1); + gpio_set_level(GPIO_USB2_ENABLE, 1); /* Call hooks now that rails are up */ hook_notify(HOOK_CHIPSET_STARTUP); @@ -205,6 +207,8 @@ enum power_state power_handle_state(enum power_state state) return POWER_S3S5; } + gpio_set_level(GPIO_ENABLE_BACKLIGHT, 1); + /* Enable wireless */ wireless_set_state(WIRELESS_ON); @@ -229,6 +233,8 @@ enum power_state power_handle_state(enum power_state state) /* Call hooks before we remove power rails */ hook_notify(HOOK_CHIPSET_SUSPEND); + gpio_set_level(GPIO_ENABLE_BACKLIGHT, 0); + /* Suspend wireless */ wireless_set_state(WIRELESS_SUSPEND); @@ -248,6 +254,8 @@ enum power_state power_handle_state(enum power_state state) wireless_set_state(WIRELESS_OFF); gpio_set_level(GPIO_ENABLE_TOUCHPAD, 0); + gpio_set_level(GPIO_USB1_ENABLE, 0); + gpio_set_level(GPIO_USB2_ENABLE, 0); return POWER_S5G3; |