Commit 28e59c7e authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp: Factor out compute_min_compressed_bpp_x16() 



Factor out compute_min_compressed_bpp_x16() also used during mode
validation in a follow-up change.

Reviewed-by: default avatarVinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20251222153547.713360-11-imre.deak@intel.com
parent 07b34db2

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

+18 −8
Original line number Diff line number Diff line
@@ -2646,6 +2646,23 @@ dsc_throughput_quirk_max_bpp_x16(const struct intel_connector *connector, 
	return fxp_q4_from_int(12);

}



static int compute_min_compressed_bpp_x16(struct intel_connector *connector,

					  enum intel_output_format output_format)

{

	int dsc_src_min_bpp, dsc_sink_min_bpp, dsc_min_bpp;

	int min_bpp_x16;



	dsc_src_min_bpp = intel_dp_dsc_min_src_compressed_bpp();

	dsc_sink_min_bpp = intel_dp_dsc_sink_min_compressed_bpp(output_format);

	dsc_min_bpp = max(dsc_src_min_bpp, dsc_sink_min_bpp);



	min_bpp_x16 = fxp_q4_from_int(dsc_min_bpp);



	min_bpp_x16 = align_min_compressed_bpp_x16(connector, min_bpp_x16);



	return min_bpp_x16;

}



/*

 * Calculate the output link min, max bpp values in limits based on the pipe bpp

 * range, crtc_state and dsc mode. Return true on success.
@@ -2675,18 +2692,11 @@ intel_dp_compute_config_link_bpp_limits(struct intel_connector *connector, 


		limits->link.min_bpp_x16 = fxp_q4_from_int(limits->pipe.min_bpp);

	} else {

		int dsc_src_min_bpp, dsc_sink_min_bpp, dsc_min_bpp;

		int dsc_src_max_bpp, dsc_sink_max_bpp, dsc_max_bpp;

		int throughput_max_bpp_x16;

		int joiner_max_bpp;



		dsc_src_min_bpp = intel_dp_dsc_min_src_compressed_bpp();

		dsc_sink_min_bpp = intel_dp_dsc_sink_min_compressed_bpp(crtc_state->output_format);

		dsc_min_bpp = max(dsc_src_min_bpp, dsc_sink_min_bpp);

		limits->link.min_bpp_x16 = fxp_q4_from_int(dsc_min_bpp);



		limits->link.min_bpp_x16 =

			align_min_compressed_bpp_x16(connector, limits->link.min_bpp_x16);

			compute_min_compressed_bpp_x16(connector, crtc_state->output_format);



		dsc_src_max_bpp = dsc_src_max_compressed_bpp(intel_dp);

		joiner_max_bpp =