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 /include/usb_charge.h | |
| 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 'include/usb_charge.h')
| -rw-r--r-- | include/usb_charge.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/usb_charge.h b/include/usb_charge.h index 66e6611985..e67aba482e 100644 --- a/include/usb_charge.h +++ b/include/usb_charge.h @@ -34,4 +34,12 @@ enum usb_charge_mode { */ int usb_charge_set_mode(int usb_port_id, enum usb_charge_mode mode); +/** + * Return a bitmask of which USB ports are enabled. + * + * If bit (1 << i) is set, port <i> is enabled. If it is clear, port <i> is + * in USB_CHARGE_MODE_DISABLED. + */ +int usb_charge_ports_enabled(void); + #endif /* __CROS_EC_USB_CHARGE_H */ |