diff options
| author | Nicolas Boichat <drinkcat@google.com> | 2017-02-22 16:43:41 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-03-01 09:31:27 -0800 |
| commit | bc819424626206be0cdafcb591c0c2fbdfb95642 (patch) | |
| tree | f62b8955a1894216702f53d6e1e5a426f688c39b /include | |
| parent | b8c255484c59161217becdc29e353424d1f7a364 (diff) | |
| download | chrome-ec-bc819424626206be0cdafcb591c0c2fbdfb95642.tar.gz | |
stm32/usb: Add support for remote wake-up
USB uses a special mode the trigger remote wake-up during host
suspend, by setting the K-state on the data differential pair,
and setting a bit in the USB config descriptor attributes field.
Let's enable that so that hammer can wake up host from S3.
BRANCH=none
BUG=chrome-os-partner:62325
TEST=Connect hammer to chell, put chell in S3. Press a key (or use
("kb 3 3 1; kb 3 3 0" in console), or touch trackpad =>
host wakes.
Change-Id: Ib7b1e9047e01869f07ddd771c9c9bc640eef10d6
Reviewed-on: https://chromium-review.googlesource.com/446240
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/config.h | 6 | ||||
| -rw-r--r-- | include/usb_api.h | 8 |
2 files changed, 14 insertions, 0 deletions
diff --git a/include/config.h b/include/config.h index 5811e0f2b5..8577194e8a 100644 --- a/include/config.h +++ b/include/config.h @@ -2433,6 +2433,12 @@ */ #undef CONFIG_USB_PORT_POWER_SMART_INVERTED +/* + * Support waking up host by setting the K-state on the data lines (requires + * CONFIG_USB_SUSPEND to be set as well). + */ +#undef CONFIG_USB_REMOTE_WAKEUP + /* Support programmable USB device iSerial field. */ #undef CONFIG_USB_SERIALNO diff --git a/include/usb_api.h b/include/usb_api.h index c2e365cf28..a251b3f857 100644 --- a/include/usb_api.h +++ b/include/usb_api.h @@ -42,6 +42,14 @@ void usb_disconnect(void); */ void usb_release(void); +/* + * Tell the host to wake up. Requires CONFIG_USB_REMOTE_WAKEUP to be defined, + * and a chip that implements the function. + * + * This function sleeps, so it must not be used in interrupt context. + */ +void usb_wake(void); + #ifdef CONFIG_USB_SELECT_PHY /* Select which PHY to use. */ void usb_select_phy(uint32_t phy); |