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

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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: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217093244.3938132-12-ankit.k.nautiyal@intel.com
This commit is contained in:
Ankit Nautiyal 2024-12-17 15:02:41 +05:30
parent a35dc4aee3
commit 160672b86b
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_dp.c
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@ -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