[PATCH i-g-t 0/2] kms_cursor_legacy: avoid AMD Panel Replay interference

[Ray Wu <ray.wu@amd.com>]

Hi,
This patch series adds an AMD Panel Replay disable/restore step to
kms_cursor_legacy.

kms_cursor_legacy assumes cursor and concurrent plane/flip updates
commit within the same vblank. On AMD eDP, cursor updates may land in
a later vblank while Panel Replay self-refresh is active, leading to
intermittent subtest failures.

This series disallows Panel Replay entry around kms_cursor_legacy and
restores the previous state on teardown. No effect on non-amdgpu
devices or on AMD systems without Panel Replay.


Ray Wu (2):
  lib/igt_amd: add helper to disable Panel Replay on all eDPs
  tests/kms_cursor_legacy: disable AMD Panel Replay during test

 lib/igt_amd.c             | 53 +++++++++++++++++++++++++++++++++++++--
 lib/igt_amd.h             |  1 +
 tests/kms_cursor_legacy.c | 12 +++++++++
 3 files changed, 64 insertions(+), 2 deletions(-)

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2.43.0