drm/i915/dp: Pass connector DSC DPCD to drm_dp_dsc_sink_supported_input_bpcs()

Use the connector's DSC DPCD capabilities in
drm_dp_dsc_sink_supported_input_bpcs().

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231006133727.1822579-11-imre.deak@intel.com

Author: ideak

drivers/gpu/drm/i915/display/intel_dp.c

@@ -2037,7 +2037,7 @@ static int intel_dp_dsc_compute_pipe_bpp(struct intel_dp *intel_dp,
 	 * Get the maximum DSC bpc that will be supported by any valid
 	 * link configuration and compressed bpp.
 	 */
-	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(intel_dp->dsc_dpcd, dsc_bpc);
+	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(connector->dp.dsc_dpcd, dsc_bpc);
 	for (i = 0; i < num_bpc; i++) {
 		pipe_bpp = dsc_bpc[i] * 3;
 		if (pipe_bpp < dsc_min_bpp)

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -185,8 +185,6 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder,
 						struct drm_connector_state *conn_state,
 						struct link_config_limits *limits)
 {
-	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(encoder);
-	struct intel_dp *intel_dp = &intel_mst->primary->dp;
 	struct intel_connector *connector =
 		to_intel_connector(conn_state->connector);
 	struct drm_i915_private *i915 = to_i915(connector->base.dev);
@@ -209,7 +207,7 @@ static int intel_dp_dsc_mst_compute_link_config(struct intel_encoder *encoder,
 	max_bpp = min_t(u8, dsc_max_bpc * 3, limits->pipe.max_bpp);
 	min_bpp = limits->pipe.min_bpp;
 
-	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(intel_dp->dsc_dpcd,
+	num_bpc = drm_dp_dsc_sink_supported_input_bpcs(connector->dp.dsc_dpcd,
 						       dsc_bpc);
 
 	drm_dbg_kms(&i915->drm, "DSC Source supported min bpp %d max bpp %d\n",