Commit 160672b8 authored by Ankit Nautiyal's avatar Ankit Nautiyal
Browse files

drm/i915/dp: Use clamp for pipe_bpp limits with DSC 



Currently to get the max pipe_bpp with dsc we take the min of
limits->pipe.max_bpp and dsc max bpp (dsc max bpc * 3). This can result
in problems when limits->pipe.max_bpp is less than the computed dsc min bpp
(dsc min bpc * 3).

Replace the min/max functions with clamp while computing
limits->pipe.max/min_bpp to ensure that the pipe_bpp limits are constrained
within the DSC-defined minimum and maximum values.

Signed-off-by: default avatarAnkit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: default avatarSuraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217093244.3938132-12-ankit.k.nautiyal@intel.com
parent a35dc4ae

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

+2 −2
Original line number Diff line number Diff line
@@ -2510,8 +2510,8 @@ intel_dp_dsc_compute_pipe_bpp_limits(struct intel_dp *intel_dp, 
	int dsc_min_bpc = intel_dp_dsc_min_src_input_bpc();

	int dsc_max_bpc = intel_dp_dsc_max_src_input_bpc(display);



	limits->pipe.max_bpp = min(limits->pipe.max_bpp, dsc_max_bpc * 3);

	limits->pipe.min_bpp = max(limits->pipe.min_bpp, dsc_min_bpc * 3);

	limits->pipe.max_bpp = clamp(limits->pipe.max_bpp, dsc_min_bpc * 3, dsc_max_bpc * 3);

	limits->pipe.min_bpp = clamp(limits->pipe.min_bpp, dsc_min_bpc * 3, dsc_max_bpc * 3);

}



bool