[PATCH 07/34] drm/amd/display: add monitor patch for delay after DP receive power up

[Harry Wentland]

From: Martin Tsai <martin.tsai at amd.com>

Change-Id: Ic8ab8775d7a0df9c12ed94ec02da8b257a43a77f
Signed-off-by: Martin Tsai <martin.tsai at amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu at amd.com>
Acked-by: Harry Wentland <harry.wentland at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c | 6 ++++++
 drivers/gpu/drm/amd/display/dc/dc_types.h     | 1 +
 2 files changed, 7 insertions(+)

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 02e1c3b188fd..9ede0f884f15 100644
--- 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 fbbe92f7a33a..aa5b90e6beb7 100644
--- 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 {
-- 
2.14.1