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drm/nouveau/kms: handle mDP connectors 

In some cases we have the handle those explicitly as the fallback
connector type detection fails and marks those as eDP connectors.

Attempting to use such a connector with mutter leads to a crash of mutter
as it ends up with two eDP displays.

Information is taken from the official DCB documentation.

Cc: stable@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: Ben Skeggs <bskeggs@redhat.com>
Reported-by: Mark Pearson <markpearson@lenovo.com>
Tested-by: Mark Pearson <markpearson@lenovo.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Karol Herbst 2020-11-27 19:39:09 +01:00 committed by Ben Skeggs
parent eaba3b2840
commit d1f5a3fc85
2 changed files with 2 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h
View File

@ -14,6 +14,7 @@ enum dcb_connector_type {
DCB_CONNECTOR_LVDS_SPWG = 0x41,
DCB_CONNECTOR_DP = 0x46,
DCB_CONNECTOR_eDP = 0x47,
DCB_CONNECTOR_mDP = 0x48,
DCB_CONNECTOR_HDMI_0 = 0x60,
DCB_CONNECTOR_HDMI_1 = 0x61,
DCB_CONNECTOR_HDMI_C = 0x63,

1
drivers/gpu/drm/nouveau/nouveau_connector.c
View File

@ -1212,6 +1212,7 @@ drm_conntype_from_dcb(enum dcb_connector_type dcb)
case DCB_CONNECTOR_DMS59_DP0:
case DCB_CONNECTOR_DMS59_DP1:
case DCB_CONNECTOR_DP :
case DCB_CONNECTOR_mDP :
case DCB_CONNECTOR_USB_C : return DRM_MODE_CONNECTOR_DisplayPort;
case DCB_CONNECTOR_eDP : return DRM_MODE_CONNECTOR_eDP;
case DCB_CONNECTOR_HDMI_0 :