drm/nouveau/kms/nv140-: Disable interlacing
authorLyude Paul <lyude@redhat.com>
Tue, 16 Aug 2022 18:04:36 +0000 (14:04 -0400)
committerLyude Paul <lyude@redhat.com>
Tue, 16 Aug 2022 19:39:48 +0000 (15:39 -0400)
commit8ba9249396bef37cb68be9e8dee7847f1737db9d
tree88321ef274e9a4c8095156c88781400e358a3f93
parent3b3510f1bd5c3112811b5b79cae3754fc91d31b0
drm/nouveau/kms/nv140-: Disable interlacing

As it turns out: while Nvidia does actually have interlacing knobs on their
GPU still pretty much no current GPUs since Volta actually support it.
Trying interlacing on these GPUs will result in NVDisplay being quite
unhappy like so:

nouveau 0000:1f:00.0: disp: chid 0 stat 00004802 reason 4 [INVALID_ARG] mthd 2008 data 00000001 code 00080000
nouveau 0000:1f:00.0: disp: chid 0 stat 10005080 reason 5 [INVALID_STATE] mthd 0200 data 00000001 code 00000001

So let's fix this by following the same behavior Nvidia's driver does and
disable interlacing entirely.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220816180436.156310-1-lyude@redhat.com
drivers/gpu/drm/nouveau/nouveau_connector.c