Commit 54cf7900 authored by Imre Deak's avatar Imre Deak
Browse files

drm/i915/dp: Add intel_dp_dsc_get_slice_config() 



Add intel_dp_dsc_get_slice_config() to compute the detailed slice
configuration and determine the slices-per-line value (returned by
intel_dp_dsc_get_slice_count()) using this function.

v2: Fix incorrectly returning false from intel_dp_dsc_min_slice_count()
    due to rebase fail. (Jouni)

Cc: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: default avatarJouni Högander <jouni.hogander@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260114162232.92731-15-imre.deak@intel.com
parent 088d06bb

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

+25 −6
Original line number Diff line number Diff line
@@ -1019,9 +1019,11 @@ static int intel_dp_dsc_min_slice_count(const struct intel_connector *connector, 
	return min_slice_count;

}



u8 intel_dp_dsc_get_slice_count(const struct intel_connector *connector,

static bool

intel_dp_dsc_get_slice_config(const struct intel_connector *connector,

			      int mode_clock, int mode_hdisplay,

				int num_joined_pipes)

			      int num_joined_pipes,

			      struct intel_dsc_slice_config *config_ret)

{

	struct intel_display *display = to_intel_display(connector);

	int min_slice_count =
@@ -1058,8 +1060,11 @@ u8 intel_dp_dsc_get_slice_count(const struct intel_connector *connector, 
		if (mode_hdisplay % slices_per_line)

			continue;



		if (min_slice_count <= slices_per_line)

			return slices_per_line;

		if (min_slice_count <= slices_per_line) {

			*config_ret = config;



			return true;

		}

	}



	/* Print slice count 1,2,4,..24 if bit#0,1,3,..23 is set in the mask. */
@@ -1070,7 +1075,21 @@ u8 intel_dp_dsc_get_slice_count(const struct intel_connector *connector, 
		    min_slice_count,

		    (int)BITS_PER_TYPE(sink_slice_count_mask), &sink_slice_count_mask);



	return false;

}



u8 intel_dp_dsc_get_slice_count(const struct intel_connector *connector,

				int mode_clock, int mode_hdisplay,

				int num_joined_pipes)

{

	struct intel_dsc_slice_config config;



	if (!intel_dp_dsc_get_slice_config(connector,

					   mode_clock, mode_hdisplay,

					   num_joined_pipes, &config))

		return 0;



	return intel_dsc_line_slice_count(&config);

}



static bool source_can_output(struct intel_dp *intel_dp,