drm/i915: Simplify scanline_offset handling for gen2

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Currently intel_crtc_scanline_offset() is careful to always
return a positive offset. That is not actually necessary
as long as we take care of negative values when applying the
offset in __intel_get_crtc_scanline().

This simplifies intel_crtc_scanline_offset(), and makes
the scanline_offfset arithmetic more symmetric between
the forward (__intel_get_crtc_scanline()) and reverse
(intel_crtc_scanline_to_hw()) directions.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240528185647.7765-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

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Ville Syrjälä 2024-05-28 21:56:44 +03:00

parent 9677dd01ca

commit 5316dd0d61

1 changed files with 3 additions and 5 deletions

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

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