[PATCH 0/2][SRU][OEM-5.14] Choppy trackpad/USB mouse on AMD Rembrandt with PSR enabled panel

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/amd/+bug/1964850

[Impact]

Disjoint trackpad/mouse path found on PSR capable panels.

[Fix]

Two fixes from v5.17-rc6 that only turns off vblank IRQs when PSR is not
enabled, originally for commit f94cf1cb1796 ("drm/amdgpu/display: set
vblank_disable_immediate for DC") that was being backported to LTS stable
5.15.y, and therefore oem-5.14.

[Test Case]

Simply move the mouse around.

[Where problems could occur]

This follows for AMD platforms, the power-saving performance may not be
as good as before, but while we don't have such energy-saving
certificate program for AMD yet, this would become something to be fully
addressed in the future.

[Other Info]

These fixes have been applied to v5.15.27, and oem-5.14 currently has
v5.15.25 in -1028, therefore only oem-5.14 is nominated, but probably
they will still be included through stable patch backport in the next
release.

Michel Dänzer (1):
  drm/amd/display: For vblank_disable_immediate, check PSR is really
    used

Nicholas Kazlauskas (1):
  drm/amdgpu/display: Only set vblank_disable_immediate when PSR is not
    enabled

 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

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2.34.1