diff options
| author | Aseda Aboagye <aaboagye@google.com> | 2019-03-28 10:43:52 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-08-19 17:44:12 +0000 |
| commit | 7c79b06f23308a6843fd20d87b4fdece9d229eb9 (patch) | |
| tree | 38b401c1f3c746b119be30643f3a02989149700b | |
| parent | ef750c75714e8d82760346660bdde78aef042d4b (diff) | |
| download | chrome-ec-7c79b06f23308a6843fd20d87b4fdece9d229eb9.tar.gz | |
common: pd_policy: Add notification for DP AltMode
This commit simply adds a notification that can be called when the
device enters DisplayPort Alternate mode or a DP attention VDM is
received. Calling the notification will send a MODE_CHANGE host event
which may wake the AP.
BUG=chromium:786721
BRANCH=firmware-nocturne-10984.B
TEST=With other patches, flash nocturne; suspend DUT, plug in powered
charge through hub, verify DUT wakes up.
Change-Id: Iaa221e69060a7d1015f7c1e2f6f053e6810a674a
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1666366
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
Auto-Submit: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1719749
Reviewed-by: Duncan Laurie <dlaurie@google.com>
| -rw-r--r-- | common/usb_pd_policy.c | 17 | ||||
| -rw-r--r-- | include/ec_commands.h | 8 | ||||
| -rw-r--r-- | include/usb_pd.h | 6 |
3 files changed, 30 insertions, 1 deletions
diff --git a/common/usb_pd_policy.c b/common/usb_pd_policy.c index 93924815a2..3c1e3c0fc5 100644 --- a/common/usb_pd_policy.c +++ b/common/usb_pd_policy.c @@ -33,6 +33,23 @@ static int rw_flash_changed = 1; +#ifdef CONFIG_HOSTCMD_EVENTS +void pd_notify_dp_alt_mode_entry(void) +{ + /* + * Note: EC_HOST_EVENT_PD_MCU may be a more appropriate host event to + * send, but we do not send that here because there are other cases + * where we send EC_HOST_EVENT_PD_MCU such as charger insertion or + * removal. Currently, those do not wake the system up, but + * EC_HOST_EVENT_MODE_CHANGE does. If we made the system wake up on + * EC_HOST_EVENT_PD_MCU, we would be turning the internal display on on + * every charger insertion/removal, which is not desired. + */ + CPRINTS("Notifying AP of DP Alt Mode Entry..."); + host_set_single_event(EC_HOST_EVENT_MODE_CHANGE); +} +#endif /* CONFIG_HOSTCMD_EVENTS */ + int pd_check_requested_voltage(uint32_t rdo, const int port) { int max_ma = rdo & 0x3FF; diff --git a/include/ec_commands.h b/include/ec_commands.h index 5797eb58f1..5933937270 100644 --- a/include/ec_commands.h +++ b/include/ec_commands.h @@ -552,7 +552,13 @@ enum host_event_code { /* EC desires to change state of host-controlled USB mux */ EC_HOST_EVENT_USB_MUX = 28, - /* TABLET/LAPTOP mode event*/ + /* + * The device has changed "modes". This can be one of the following: + * + * - TABLET/LAPTOP mode + * - detachable base attach/detach event + * - DisplayPort Alternate Mode entry + */ EC_HOST_EVENT_MODE_CHANGE = 29, /* Keyboard recovery combo with hardware reinitialization */ diff --git a/include/usb_pd.h b/include/usb_pd.h index 510b3dc245..1c65a0d251 100644 --- a/include/usb_pd.h +++ b/include/usb_pd.h @@ -1718,6 +1718,12 @@ int pd_ts_dts_plugged(int port); */ int pd_capable(int port); +/* + * Notify the AP that we have entered into DisplayPort Alternate Mode. This + * sets a MODE_CHANGE host event which may wake the AP. + */ +void pd_notify_dp_alt_mode_entry(void); + /* ----- Logging ----- */ #ifdef CONFIG_USB_PD_LOGGING /** |