drm/i915: Allow fastboot to fix up the vblank delay

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GOP might not agree with our idea of what the vblank delay should be.
Reuse the LRR codepaths to fix that up via a fastset.

The relevant registers aren't actually double buffered so this is a
little bit dodgy. While I've not seen any real issues from frobbing
these live, let's limit this to just the fastboot case (by only
allowing it when old_crtc_state->inherited==true).

Cc: Paz Zcharya <pazz@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250116201637.22486-7-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

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Ville Syrjälä 2025-01-16 22:16:35 +02:00

parent ff118b4f0c

commit 42fdbe94b6

1 changed files with 22 additions and 4 deletions

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

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