drm/i915/dsc: Add prefill helper for DSC

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Add intel_vdsc_prefill_lines() which tells us how many extra lines
of latency the DSC adds to the pipe prefill.

We shouldn't need a "worst case" vs, "current case" split here
as the DSC state should only change during full modesets.

The returned numbers are in .16 binary fixed point.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20251014191808.12326-6-ville.syrjala@linux.intel.com

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Ville Syrjälä 2025-10-14 22:18:04 +03:00

parent 4157c75604

commit d7cc4b6bc9

2 changed files with 9 additions and 0 deletions

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8

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

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1

drivers/gpu/drm/i915/display/intel_vdsc.h

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