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drm/nouveau/kms/nv140-: Disable interlacing

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commit 8ba9249396 upstream.

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lyude Paul
2022-08-16 14:04:36 -04:00
committed by Greg Kroah-Hartman
parent d0febad83e
commit 57f1a89a8e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/nouveau/nouveau_connector.c
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@@ -500,7 +500,8 @@ nouveau_connector_set_encoder(struct drm_connector *connector,
connector->interlace_allowed =
nv_encoder->caps.dp_interlace;
else
connector->interlace_allowed = true;
connector->interlace_allowed =
drm->client.device.info.family < NV_DEVICE_INFO_V0_VOLTA;
connector->doublescan_allowed = true;
} else
if (nv_encoder->dcb->type == DCB_OUTPUT_LVDS ||