Commit 83a3766b authored by Rajib Mahapatra's avatar Rajib Mahapatra Committed by Alex Deucher
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drm/amd/display: Not to call dpcd_set_source_specific_data during resume. 



[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: default avatarHersen Wu <hersenxs.wu@amd.com>
Signed-off-by: default avatarRajib Mahapatra <rajib.mahapatra@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a746c77e

drivers/gpu/drm/amd/display/dc/core/dc_link.c

+2 −1
Original line number Diff line number Diff line
@@ -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);