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
Loading
Loading
Loading
Loading
+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 =