drm/amd/display: Add helper function to check for non-address fast updates

[Why/How]
Need to identify which fast updates will update more than just the
address.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Ilya Bakoulin <ilya.bakoulin@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -4697,7 +4697,7 @@ static bool commit_minimal_transition_state(struct dc *dc,
 	return true;
 }
 
-static void populate_fast_updates(struct dc_fast_update *fast_update,
+void populate_fast_updates(struct dc_fast_update *fast_update,
 		struct dc_surface_update *srf_updates,
 		int surface_count,
 		struct dc_stream_update *stream_update)
@@ -4707,6 +4707,9 @@ static void populate_fast_updates(struct dc_fast_update *fast_update,
 	if (stream_update) {
 		fast_update[0].out_transfer_func = stream_update->out_transfer_func;
 		fast_update[0].output_csc_transform = stream_update->output_csc_transform;
+	} else {
+		fast_update[0].out_transfer_func = NULL;
+		fast_update[0].output_csc_transform = NULL;
 	}
 
 	for (i = 0; i < surface_count; i++) {
@@ -4740,6 +4743,26 @@ static bool fast_updates_exist(struct dc_fast_update *fast_update, int surface_c
 	return false;
 }
 
+bool fast_nonaddr_updates_exist(struct dc_fast_update *fast_update, int surface_count)
+{
+	int i;
+
+	if (fast_update[0].out_transfer_func ||
+		fast_update[0].output_csc_transform)
+		return true;
+
+	for (i = 0; i < surface_count; i++) {
+		if (fast_update[i].input_csc_color_matrix ||
+				fast_update[i].gamma ||
+				fast_update[i].gamut_remap_matrix ||
+				fast_update[i].coeff_reduction_factor ||
+				fast_update[i].cursor_csc_color_matrix)
+			return true;
+	}
+
+	return false;
+}
+
 static bool full_update_required(struct dc *dc,
 		struct dc_surface_update *srf_updates,
 		int surface_count,

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

@@ -1587,6 +1587,12 @@ bool dc_acquire_release_mpc_3dlut(
 bool dc_resource_is_dsc_encoding_supported(const struct dc *dc);
 void get_audio_check(struct audio_info *aud_modes,
 	struct audio_check *aud_chk);
+
+bool fast_nonaddr_updates_exist(struct dc_fast_update *fast_update, int surface_count);
+void populate_fast_updates(struct dc_fast_update *fast_update,
+		struct dc_surface_update *srf_updates,
+		int surface_count,
+		struct dc_stream_update *stream_update);
 /*
  * Set up streams and links associated to drive sinks
  * The streams parameter is an absolute set of all active streams.