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| author | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2025-10-16 11:24:08 +0530 |
|---|---|---|
| committer | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2025-10-16 19:27:37 +0530 |
| commit | ca4edafa149011010b1943edafc3993a99c8df7c (patch) | |
| tree | fe204a4084555f90dd241d39d035a4b5a4ddb361 /drivers/gpu/drm/i915/display/intel_psr.c | |
| parent | 2cdcab0d3a681f655757dab9d9719ac069b359ff (diff) | |
drm/i915/vblank: Add helper to get correct vblank length
Currently crtc_vblank_start is assumed to be the vblank_start for the fixed
refresh rate case. That value can be different from the variable refresh
rate case whenever always_use_vrr_tg()==false. On icl/tgl it's always
different due to the extra vblank delay, and also on adl+ it could be
different if we were to use an optimized guardband.
So places where crtc_vblank_start is used to compute vblank length needs
change so as to account for cases where vrr is enabled. Specifically
with vrr.enable the effective vblank length is actually guardband.
Add a helper to get the correct vblank length for both vrr and fixed
refresh rate cases. Use this helper where vblank_start is used to
compute the vblank length.
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/20251016055415.2101347-5-ankit.k.nautiyal@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_psr.c')
0 files changed, 0 insertions, 0 deletions