Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/i915/display: Prepare for vblank_delay for LRR
Update allow_vblank_delay_fastset() to permit vblank delay adjustments
during with LRR when VRR TG is always active.
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://lore.kernel.org/r/20251016055415.2101347-11-ankit.k.nautiyal@intel.com
+8
-2
+8
-2
drivers/gpu/drm/i915/display/intel_display.c
+8
-2
drivers/gpu/drm/i915/display/intel_display.c
···
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* Allow fastboot to fix up vblank delay (handled via LRR
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* codepaths), a bit dodgy as the registers aren't
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* double buffered but seems to be working more or less...
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+
*
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* Also allow this when the VRR timing generator is always on,
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* and optimized guardband is used. In such cases,
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* vblank delay may vary even without inherited state, but it's
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* still safe as VRR guardband is still same.
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*/
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-
return HAS_LRR(display) && old_crtc_state->inherited &&
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-
!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI);
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+
return HAS_LRR(display) &&
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+
(old_crtc_state->inherited || intel_vrr_always_use_vrr_tg(display)) &&
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+
!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI);
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}
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bool