diff options
| author | Randall Spangler <rspangler@chromium.org> | 2014-01-22 15:36:08 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-01-23 19:32:27 +0000 |
| commit | 75857e80d0ef0426fd80fd7cb526ff7b895ba9a0 (patch) | |
| tree | 8a4695ef235c925bcb0b30306f293588a5ec9a00 /common/usb_port_power_smart.c | |
| parent | c8c66cdb77eef484d481cc2793f5f73e43542e55 (diff) | |
| download | chrome-ec-75857e80d0ef0426fd80fd7cb526ff7b895ba9a0.tar.gz | |
rambi: Leave 5V rail on in S3 if USB ports are powered
Previously, the 5V rail was disabled unconditionally in the S0->S3
transition. Now, the rail is left powered if one or both of the USB
ports are powered.
BUG=chrome-os-partner:25178
BRANCH=rambi
TEST=Modify the OS to leave USB ports powered in S3. Then suspend. On
the EC console, 'gpioget pp5000_en' should be 1.
Change-Id: I3c73f3fe228e940317c0da7330f117c7ab0a6d0c
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/183548
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'common/usb_port_power_smart.c')
| -rw-r--r-- | common/usb_port_power_smart.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/common/usb_port_power_smart.c b/common/usb_port_power_smart.c index 9a47d78326..89f72c7339 100644 --- a/common/usb_port_power_smart.c +++ b/common/usb_port_power_smart.c @@ -85,6 +85,19 @@ static void usb_charge_all_ports_off(void) usb_charge_set_mode(1, USB_CHARGE_MODE_DISABLED); } +int usb_charge_ports_enabled(void) +{ + int mask = 0; + + if (gpio_get_level(GPIO_USB1_ENABLE)) + mask |= (1 << 0); + + if (gpio_get_level(GPIO_USB2_ENABLE)) + mask |= (1 << 1); + + return mask; +} + int usb_charge_set_mode(int port_id, enum usb_charge_mode mode) { CPRINTF("[%T USB charge p%d m%d]\n", port_id, mode); |