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drm/amd/display: Not to call dpcd_set_source_specific_data during resume.

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[Why]
During resume path, dpcd_set_source_specific_data is taking
extra time when core_link_write_dpcd fails on DP_SOURCE_OUI+0x03
and DP_SOURCE_MINIMUM_HBLANK_SUPPORTED. Here,aux->transfer fails
with multiple retries and consume significant amount time during
S0i3 resume.

[How]
Not to call dpcd_set_source_specific_data during resume path
when there is no oled panel connected and achieve faster resume
during S0i3.

Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Rajib Mahapatra <rajib.mahapatra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rajib Mahapatra 2022-01-10 13:15:19 +05:30 committed by Alex Deucher
parent a746c77e5e
commit 83a3766b14
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc_link.c
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@ -862,7 +862,8 @@ static bool dc_link_detect_helper(struct dc_link *link,
(!link->dc->config.allow_edp_hotplug_detection)) &&
link->local_sink) {
// need to re-write OUI and brightness in resume case
if (link->connector_signal == SIGNAL_TYPE_EDP) {
if (link->connector_signal == SIGNAL_TYPE_EDP &&
(link->dpcd_sink_ext_caps.bits.oled == 1)) {
dpcd_set_source_specific_data(link);
msleep(post_oui_delay);
dc_link_set_default_brightness_aux(link);