From: Rajib Mahapatra Date: Mon, 10 Jan 2022 07:45:19 +0000 (+0530) Subject: drm/amd/display: Not to call dpcd_set_source_specific_data during resume. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=83a3766b147053e542f3c91c121cb9594239e644;p=linux.git 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: Hersen Wu Signed-off-by: Rajib Mahapatra Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 0c64dea4fdd8f..e5d63b0d25945 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -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);