drm/i915/vrr: Account for TRANS_PUSH delay

Browse source

When we send a push during vblank the TRANS_PUSH write happens
at some point during a scanline, and the hardware picks it up
on the next scanline. Thus there is up to one extra scanline
of delay between the TRANS_PUSH write and the delayed vblank
triggering. Account for that during intel_dsb_wait_vblank_delay()
so that we are guaranteed to be past the delayed vblank before
we trigger the completion interrupt for the commit.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250207223159.14132-4-ville.syrjala@linux.intel.com
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>

...

This commit is contained in:

Ville Syrjälä 2025-02-08 00:31:54 +02:00

parent b47e345db9

commit 51385d6899

1 changed files with 7 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

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

View file