admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/display: Prepare for vblank_delay for LRR

Browse Source 
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
This commit is contained in:
Ankit Nautiyal
2025-10-16 11:24:14 +05:30
parent 5cb2cf6aa8
commit 755e430b1e
1 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/gpu/drm/i915/display/intel_display.c
View File

@@ -4958,9 +4958,15 @@ static bool allow_vblank_delay_fastset(const struct intel_crtc_state *old_crtc_s
* Allow fastboot to fix up vblank delay (handled via LRR
* codepaths), a bit dodgy as the registers aren't
* double buffered but seems to be working more or less...
*
* Also allow this when the VRR timing generator is always on,
* and optimized guardband is used. In such cases,
* vblank delay may vary even without inherited state, but it's
* still safe as VRR guardband is still same.
*/
return HAS_LRR(display) && old_crtc_state->inherited &&
!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI);
return HAS_LRR(display) &&
(old_crtc_state->inherited || intel_vrr_always_use_vrr_tg(display)) &&
!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI);
}
bool