drm/i915: Reject modes with linetime > 64 usec

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Reject modes whose linetime exceeds 64 usec.

First reason being that WM_LINETIME is limited to (nearly) 64 usec.

Additionally knowing the linetime is bounded will help with
determining whether overflows may be a concern during various
calculations.

I decided to round up, and accept the linetime==64 case. We use
various rounding directions for this in other parts of the code,
so I feel this provides the most consistent result all around.

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/20251014191808.12326-3-ville.syrjala@linux.intel.com

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Ville Syrjälä 2025-10-14 22:18:01 +03:00

parent 755e430b1e

commit 5021ccb44d

1 changed files with 8 additions and 0 deletions

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

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