[PATCH] Revert "drm/amd/display: move edp sink present detection to hw init"

[Anson Jacob]

This reverts commit de6571ecbb88643fa4bb4172e65c12795a2f3124.

Patch causes regression in resume time.
---
 drivers/gpu/drm/amd/display/dc/core/dc.c | 40 +++++++++++-------------
 drivers/gpu/drm/amd/display/dc/dc_link.h |  2 --
 2 files changed, 18 insertions(+), 24 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index c9aede2f783d..8d5378f53243 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -205,9 +205,27 @@ static bool create_links(
 		link = link_create(&link_init_params);
 
 		if (link) {
+			bool should_destory_link = false;
+
+			if (link->connector_signal == SIGNAL_TYPE_EDP) {
+				if (dc->config.edp_not_connected) {
+					if (!IS_DIAG_DC(dc->ctx->dce_environment))
+						should_destory_link = true;
+				} else {
+					enum dc_connection_type type;
+					dc_link_detect_sink(link, &type);
+					if (type == dc_connection_none)
+						should_destory_link = true;
+				}
+			}
+
+			if (dc->config.force_enum_edp || !should_destory_link) {
 				dc->links[dc->link_count] = link;
 				link->dc = dc;
 				++dc->link_count;
+			} else {
+				link_destroy(&link);
+			}
 		}
 	}
 
@@ -998,30 +1016,8 @@ struct dc *dc_create(const struct dc_init_data *init_params)
 	return NULL;
 }
 
-static void detect_edp_presence(struct dc *dc)
-{
-	struct dc_link *edp_link = get_edp_link(dc);
-	bool edp_sink_present = true;
-
-	if (!edp_link)
-		return;
-
-	if (dc->config.edp_not_connected) {
-			edp_sink_present = false;
-	} else {
-		enum dc_connection_type type;
-		dc_link_detect_sink(edp_link, &type);
-		if (type == dc_connection_none)
-			edp_sink_present = false;
-	}
-
-	edp_link->edp_sink_present = edp_sink_present;
-}
-
 void dc_hardware_init(struct dc *dc)
 {
-
-	detect_edp_presence(dc);
 	if (dc->ctx->dce_environment != DCE_ENV_VIRTUAL_HW)
 		dc->hwss.init_hw(dc);
 }
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h
index e189f16bc026..d5d8f0ad9233 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_link.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_link.h
@@ -103,8 +103,6 @@ struct dc_link {
 	bool lttpr_non_transparent_mode;
 	bool is_internal_display;
 
-	bool edp_sink_present;
-
 	/* caps is the same as reported_link_cap. link_traing use
 	 * reported_link_cap. Will clean up.  TODO
 	 */
-- 
2.25.1