diff options
| author | Nicolas Boichat <drinkcat@chromium.org> | 2018-02-01 11:33:25 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-02-02 10:17:30 -0800 |
| commit | 76927bdc5a17ddbdc9fc601b761c2a4984ecc1e9 (patch) | |
| tree | 0ef346ffe19b05b9fddeb0320c244705c5686baf /include/usb_api.h | |
| parent | c721ad9162b9fe20ce872c1d28cd8b1ad60e2c25 (diff) | |
| download | chrome-ec-76927bdc5a17ddbdc9fc601b761c2a4984ecc1e9.tar.gz | |
stm32/usb: Add HOOK_USB_PM_CHANGE, called when USB is resumed/suspended
In particular, this will allow touchpad driver and keyboard matrix
scanning to be powered off/disabled when the USB interface is
disabled without setting the remote wake feature
(USB_REQ_FEATURE_DEVICE_REMOTE_WAKEUP), as events would be
ignored anyway.
BRANCH=none
BUG=b:72683995
TEST=With next CLs, touchpad and keyboard matrix scanning are disabled
when lid is closed.
Change-Id: I3750bfaf8c31cde075adf9da4fef39753b8981c5
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/897067
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include/usb_api.h')
| -rw-r--r-- | include/usb_api.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/usb_api.h b/include/usb_api.h index 8778dcc54e..7ebf25b135 100644 --- a/include/usb_api.h +++ b/include/usb_api.h @@ -49,6 +49,13 @@ void usb_release(void); int usb_is_suspended(void); /* + * Returns true if USB remote wakeup is currently enabled by host. + * Requires CONFIG_USB_SUSPEND to be defined, always return 0 if + * CONFIG_USB_REMOTE_WAKEUP is not defined. + */ +int usb_is_remote_wakeup_enabled(void); + +/* * Preserve in non-volatile memory the state of the USB hardware registers * which cannot be simply re-initialized when powered up again. */ |