diff options
| author | Scott Collyer <scollyer@google.com> | 2021-07-16 11:36:24 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-07-17 02:27:03 +0000 |
| commit | 15babbb6461de00403b148dbdb40207a8220e78f (patch) | |
| tree | 62f3bc7a5d4db0ffcfa40efbd4b240ed215f8a55 /include/usb_pd.h | |
| parent | 085164688e25f32004ff2787c10a66a74331e52c (diff) | |
| download | chrome-ec-15babbb6461de00403b148dbdb40207a8220e78f.tar.gz | |
ALT-DP: Don't send DP_ATTENTION until after DP_CONFIG
This CL adds a new variable to the hpd state that enables the pd
policy layer to inform the hpd->DP_ATTENTION converter that at least
one DP_CONFIG message has been received. This control is used to make
sure that DP_ATTENTION messages aren't sent prior the DFP_D being
configured for DP port mode. Some port partners may get confused if
DP_ATTENTION is sent prior to either DP_CONFIG or DP_STATUS.
BRANCH=quiche
BUG=b:192051705
TEST=verifed on kasumi (grunt) that the display is extended correctly
following usbc hotplug events. Previously, this case was failing 1 out
of 3-4 times.
Signed-off-by: Scott Collyer <scollyer@google.com>
Change-Id: I80d576de7fc0075be2b1a838d1ed764ae7828e8e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3035785
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Reviewed-by: Abe Levkoy <alevkoy@chromium.org>
Commit-Queue: Scott Collyer <scollyer@chromium.org>
Diffstat (limited to 'include/usb_pd.h')
| -rw-r--r-- | include/usb_pd.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/usb_pd.h b/include/usb_pd.h index a0a4c9e790..aed49c8f07 100644 --- a/include/usb_pd.h +++ b/include/usb_pd.h @@ -2177,6 +2177,13 @@ void pd_ufp_set_dp_opos(int port, int opos); */ int pd_ufp_get_dp_opos(int port); +/** + * Notify hpd->pd converter that display is configured + * + * @param port USB-C port number + */ +void pd_ufp_enable_hpd_send(int port); + /* * Returns True if cable supports USB2 connection * |