drm/amd/display: use max_dsc_bpp in amdgpu_dm

Since, the quirk is handled in the DRM core now, we can use that value
instead of the internal value.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -5607,16 +5607,14 @@ static void apply_dsc_policy_for_stream(struct amdgpu_dm_connector *aconnector,
 {
 	struct drm_connector *drm_connector = &aconnector->base;
 	uint32_t link_bandwidth_kbps;
-	uint32_t max_dsc_target_bpp_limit_override = 0;
 	struct dc *dc = sink->ctx->dc;
 	uint32_t max_supported_bw_in_kbps, timing_bw_in_kbps;
 	uint32_t dsc_max_supported_bw_in_kbps;
+	uint32_t max_dsc_target_bpp_limit_override =
+		drm_connector->display_info.max_dsc_bpp;
 
 	link_bandwidth_kbps = dc_link_bandwidth_kbps(aconnector->dc_link,
 							dc_link_get_link_cap(aconnector->dc_link));
-	if (stream->link && stream->link->local_sink)
-		max_dsc_target_bpp_limit_override =
-			stream->link->local_sink->edid_caps.panel_patch.max_dsc_target_bpp_limit;
 
 	/* Set DSC policy according to dsc_clock_en */
 	dc_dsc_policy_set_enable_dsc_when_not_needed(

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c

@@ -642,15 +642,18 @@ static void set_dsc_configs_from_fairness_vars(struct dsc_mst_fairness_params *p
 		int count,
 		int k)
 {
+	struct drm_connector *drm_connector;
 	int i;
 
 	for (i = 0; i < count; i++) {
+		drm_connector = &params[i].aconnector->base;
+
 		memset(&params[i].timing->dsc_cfg, 0, sizeof(params[i].timing->dsc_cfg));
 		if (vars[i + k].dsc_enabled && dc_dsc_compute_config(
 					params[i].sink->ctx->dc->res_pool->dscs[0],
 					&params[i].sink->dsc_caps.dsc_dec_caps,
 					params[i].sink->ctx->dc->debug.dsc_min_slice_height_override,
-					params[i].sink->edid_caps.panel_patch.max_dsc_target_bpp_limit,
+					drm_connector->display_info.max_dsc_bpp,
 					0,
 					params[i].timing,
 					&params[i].timing->dsc_cfg)) {
@@ -692,12 +695,16 @@ static int bpp_x16_from_pbn(struct dsc_mst_fairness_params param, int pbn)
 	struct dc_dsc_config dsc_config;
 	u64 kbps;
 
+	struct drm_connector *drm_connector = &param.aconnector->base;
+	uint32_t max_dsc_target_bpp_limit_override =
+		drm_connector->display_info.max_dsc_bpp;
+
 	kbps = div_u64((u64)pbn * 994 * 8 * 54, 64);
 	dc_dsc_compute_config(
 			param.sink->ctx->dc->res_pool->dscs[0],
 			&param.sink->dsc_caps.dsc_dec_caps,
 			param.sink->ctx->dc->debug.dsc_min_slice_height_override,
-			param.sink->edid_caps.panel_patch.max_dsc_target_bpp_limit,
+			max_dsc_target_bpp_limit_override,
 			(int) kbps, param.timing, &dsc_config);
 
 	return dsc_config.bits_per_pixel;