diff options
| author | Nicolas Boichat <drinkcat@google.com> | 2017-03-01 15:10:39 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-05-02 22:50:32 -0700 |
| commit | 7fb0338cbd40d40db2a304cd3e8ed10ae4f59450 (patch) | |
| tree | ec27fb44d6c27d537f35e02cd150890b51f851e1 /chip/stm32 | |
| parent | 49c776b5b78462ae2118fca240f7fb5df7dc444c (diff) | |
| download | chrome-ec-7fb0338cbd40d40db2a304cd3e8ed10ae4f59450.tar.gz | |
hammer: Pulse detection pin on USB wake event
When usb_wake is called (key press, trackpad event), pulse
detection pin for 100us. This allows Lid EC to wake the AP
even when it is in deep S3 mode, where normal wake using USB
lines does not work.
BRANCH=none
BUG=b:35775062
TEST=Flash hammer, looks at poppy console: base power is not
disconnected, but events appear in the console.
Change-Id: I7b8ee407046d4caa1ce75190c30d693b71b00d2e
Reviewed-on: https://chromium-review.googlesource.com/448380
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'chip/stm32')
| -rw-r--r-- | chip/stm32/usb.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/chip/stm32/usb.c b/chip/stm32/usb.c index b20f7d271f..018a26ce03 100644 --- a/chip/stm32/usb.c +++ b/chip/stm32/usb.c @@ -372,6 +372,12 @@ static volatile int usb_wake_done = 1; */ static volatile int esof_count; +__attribute__((weak)) +void board_usb_wake(void) +{ + /* Side-band USB wake, do nothing by default. */ +} + void usb_wake(void) { if (!remote_wakeup_enabled || @@ -396,6 +402,9 @@ void usb_wake(void) */ esof_count = 3; STM32_USB_CNTR |= STM32_USB_CNTR_RESUME | STM32_USB_CNTR_ESOFM; + + /* Try side-band wake as well. */ + board_usb_wake(); } #endif |