drm/amd/display: Introduce deferred Replay coasting vtotal update

Add functions to defer updating of coasting vtotal after source refresh rate update.
Reviewed-by: Robin Chen <robin.chen@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: ChunTao Tso <chuntao.tso@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc_types.h

@@ -1091,6 +1091,8 @@ struct replay_settings {
 	uint32_t coasting_vtotal;
 	/* Coasting vtotal table */
 	uint32_t coasting_vtotal_table[PR_COASTING_TYPE_NUM];
+	/* Defer Update Coasting vtotal table */
+	uint32_t defer_update_coasting_vtotal_table[PR_COASTING_TYPE_NUM];
 	/* Maximum link off frame count */
 	uint32_t link_off_frame_count;
 	/* Replay pseudo vtotal for abm + ips on full screen video which can improve ips residency */

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

@@ -973,6 +973,20 @@ bool psr_su_set_dsc_slice_height(struct dc *dc, struct dc_link *link,
 	return true;
 }
 
+void set_replay_defer_update_coasting_vtotal(struct dc_link *link,
+	enum replay_coasting_vtotal_type type,
+	uint32_t vtotal)
+{
+	link->replay_settings.defer_update_coasting_vtotal_table[type] = vtotal;
+}
+
+void update_replay_coasting_vtotal_from_defer(struct dc_link *link,
+	enum replay_coasting_vtotal_type type)
+{
+	link->replay_settings.coasting_vtotal_table[type] =
+		link->replay_settings.defer_update_coasting_vtotal_table[type];
+}
+
 void set_replay_coasting_vtotal(struct dc_link *link,
 	enum replay_coasting_vtotal_type type,
 	uint32_t vtotal)

drivers/gpu/drm/amd/display/modules/power/power_helpers.h

@@ -57,6 +57,11 @@ void init_replay_config(struct dc_link *link, struct replay_config *pr_config);
 void set_replay_coasting_vtotal(struct dc_link *link,
 	enum replay_coasting_vtotal_type type,
 	uint32_t vtotal);
+void set_replay_defer_update_coasting_vtotal(struct dc_link *link,
+	enum replay_coasting_vtotal_type type,
+	uint32_t vtotal);
+void update_replay_coasting_vtotal_from_defer(struct dc_link *link,
+	enum replay_coasting_vtotal_type type);
 void set_replay_ips_full_screen_video_src_vtotal(struct dc_link *link, uint16_t vtotal);
 void calculate_replay_link_off_frame_count(struct dc_link *link,
 	uint16_t vtotal, uint16_t htotal);