drm/amd/display: add monitor patch for delay after DP receive power up

Signed-off-by: Martin Tsai <martin.tsai@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 02e1c3b..9ede0f8 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1260,6 +1260,12 @@ static enum dc_status enable_link_dp(
                pipe_ctx->clock_source->id,
                &link_settings);
 
+       if (stream->sink->edid_caps.panel_patch.dppowerup_delay > 0) {
+               int delay_dp_power_up_in_ms = stream->sink->edid_caps.panel_patch.dppowerup_delay;
+
+               msleep(delay_dp_power_up_in_ms);
+       }
+
        panel_mode = dp_get_panel_mode(link);
        dpcd_configure_panel_mode(link, panel_mode);
 

diff --git a/drivers/gpu/drm/amd/display/dc/dc_types.h b/drivers/gpu/drm/amd/display/dc/dc_types.h
index fbbe92f..aa5b90e 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_types.h
@@ -195,6 +195,7 @@ union display_content_support {
 
 struct dc_panel_patch {
        unsigned int disconnect_delay;
+       unsigned int dppowerup_delay;
 };
 
 struct dc_edid_caps {