Commit cc81951d authored Oct 06, 2023 by Imre Deak

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

parent bb414c94

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

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

+1 −3

Original line number	Diff line number	Diff line
		@@ -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",