diff options
| author | Lewis Huang <Lewis.Huang@amd.com> | 2022-10-20 18:46:39 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-10-24 21:36:12 +0300 |
| commit | b473bd5fc333ab02479444dd4a51be5f5e324d97 (patch) | |
| tree | d6ae6a28aefa6e1025773d9966f42456ed92df0c /drivers/gpu/drm/amd/display/dc/inc | |
| parent | f1943a51f0f9ce732e344fffb576b54f3e230a4d (diff) | |
| download | linux-b473bd5fc333ab02479444dd4a51be5f5e324d97.tar.xz | |
drm/amd/display: refine wake up aux in retrieve link caps
[Why]
Read set_power_state dpcd after HPD cause USB4 CTS 4.2.1.1
[How]
Read LTTPR caps first. If aux channel not ready, wake up aux channel.
If wake up aux channel return pass, retrieve lttpr caps again. If wake
up aux channel return false, register a detection retry timer.
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/inc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h index b304d450b038..e8d8c5cb1309 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h +++ b/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h @@ -193,7 +193,7 @@ enum dc_status dpcd_configure_lttpr_mode( struct link_training_settings *lt_settings); enum dp_link_encoding dp_get_link_encoding_format(const struct dc_link_settings *link_settings); -bool dp_retrieve_lttpr_cap(struct dc_link *link); +enum dc_status dp_retrieve_lttpr_cap(struct dc_link *link); bool dp_is_lttpr_present(struct dc_link *link); enum lttpr_mode dp_decide_lttpr_mode(struct dc_link *link, struct dc_link_settings *link_setting); void dp_get_lttpr_mode_override(struct dc_link *link, enum lttpr_mode *override); |