drm/i915/dp: Use connector DSC DPCD in intel_dp_dsc_compute_params()

Use the connector's DSC DPCD capabilities in
intel_dp_dsc_compute_params().
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/20231006133727.1822579-14-imre.deak@intel.com

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

@@ -1636,11 +1636,10 @@ static int intel_dp_get_slice_height(int vactive)
 	return 2;
 }
 
-static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
+static int intel_dp_dsc_compute_params(const struct intel_connector *connector,
 				       struct intel_crtc_state *crtc_state)
 {
-	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
-	struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
+	struct drm_i915_private *i915 = to_i915(connector->base.dev);
 	struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
 	u8 line_buf_depth;
 	int ret;
@@ -1661,17 +1660,17 @@ static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
 		return ret;
 
 	vdsc_cfg->dsc_version_major =
-		(intel_dp->dsc_dpcd[DP_DSC_REV - DP_DSC_SUPPORT] &
+		(connector->dp.dsc_dpcd[DP_DSC_REV - DP_DSC_SUPPORT] &
 		 DP_DSC_MAJOR_MASK) >> DP_DSC_MAJOR_SHIFT;
 	vdsc_cfg->dsc_version_minor =
 		min(intel_dp_source_dsc_version_minor(i915),
-		    intel_dp_sink_dsc_version_minor(intel_dp->dsc_dpcd));
+		    intel_dp_sink_dsc_version_minor(connector->dp.dsc_dpcd));
 	if (vdsc_cfg->convert_rgb)
 		vdsc_cfg->convert_rgb =
-			intel_dp->dsc_dpcd[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT] &
+			connector->dp.dsc_dpcd[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT] &
 			DP_DSC_RGB;
 
-	line_buf_depth = drm_dp_dsc_sink_line_buf_depth(intel_dp->dsc_dpcd);
+	line_buf_depth = drm_dp_dsc_sink_line_buf_depth(connector->dp.dsc_dpcd);
 	if (!line_buf_depth) {
 		drm_dbg_kms(&i915->drm,
 			    "DSC Sink Line Buffer Depth invalid\n");
@@ -1686,7 +1685,7 @@ static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
 			DSC_1_1_MAX_LINEBUF_DEPTH_BITS : line_buf_depth;
 
 	vdsc_cfg->block_pred_enable =
-		intel_dp->dsc_dpcd[DP_DSC_BLK_PREDICTION_SUPPORT - DP_DSC_SUPPORT] &
+		connector->dp.dsc_dpcd[DP_DSC_BLK_PREDICTION_SUPPORT - DP_DSC_SUPPORT] &
 		DP_DSC_BLK_PREDICTION_IS_SUPPORTED;
 
 	return drm_dsc_compute_rc_parameters(vdsc_cfg);
@@ -2182,7 +2181,7 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
 	if (pipe_config->bigjoiner_pipes || pipe_config->dsc.slice_count > 1)
 		pipe_config->dsc.dsc_split = true;
 
-	ret = intel_dp_dsc_compute_params(&dig_port->base, pipe_config);
+	ret = intel_dp_dsc_compute_params(connector, pipe_config);
 	if (ret < 0) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "Cannot compute valid DSC parameters for Input Bpp = %d "