drm/i915/dp: Use connector DSC DPCD in i915_dsc_fec_support_show()

Use the connector's DSC DPCD capabilities in i915_dsc_fec_support_show()
instead of the version stored in the encoder. Atm the two are identical,
but a follow-up patch will store the (MST) connector specific version
in the connector.

Reviewed-by: Stanislav Lisovskiy <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Signed-off-by: Imre Deak <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: ideak

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

@@ -1235,19 +1235,19 @@ static int i915_dsc_fec_support_show(struct seq_file *m, void *data)
 		seq_printf(m, "DSC_Enabled: %s\n",
 			   str_yes_no(crtc_state->dsc.compression_enable));
 		seq_printf(m, "DSC_Sink_Support: %s\n",
-			   str_yes_no(drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd)));
+			   str_yes_no(drm_dp_sink_supports_dsc(connector->dp.dsc_dpcd)));
 		seq_printf(m, "DSC_Output_Format_Sink_Support: RGB: %s YCBCR420: %s YCBCR444: %s\n",
-			   str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd,
+			   str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
 								      DP_DSC_RGB)),
-			   str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd,
+			   str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
 								      DP_DSC_YCbCr420_Native)),
-			   str_yes_no(drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd,
+			   str_yes_no(drm_dp_dsc_sink_supports_format(connector->dp.dsc_dpcd,
 								      DP_DSC_YCbCr444)));
 		seq_printf(m, "Force_DSC_Enable: %s\n",
 			   str_yes_no(intel_dp->force_dsc_en));
 		if (!intel_dp_is_edp(intel_dp))
 			seq_printf(m, "FEC_Sink_Support: %s\n",
-				   str_yes_no(drm_dp_sink_supports_fec(intel_dp->fec_capable)));
+				   str_yes_no(drm_dp_sink_supports_fec(connector->dp.fec_capability)));
 	} while (try_again);
 
 	drm_modeset_drop_locks(&ctx);