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-rw-r--r--0001-drm-nouveau-kms-handle-mDP-connectors.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/0001-drm-nouveau-kms-handle-mDP-connectors.patch b/0001-drm-nouveau-kms-handle-mDP-connectors.patch
new file mode 100644
index 000000000..44c150fd3
--- /dev/null
+++ b/0001-drm-nouveau-kms-handle-mDP-connectors.patch
@@ -0,0 +1,54 @@
+From 54a080fdc2e65b38aea4dd59dde357d6c340fa25 Mon Sep 17 00:00:00 2001
+From: Karol Herbst <kherbst@redhat.com>
+Date: Thu, 26 Nov 2020 14:47:50 +0100
+Subject: [PATCH] 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.
+
+Upstream Nouveau commit: 95adf381b74e86a8a34b93c3fab73c15dd2f3f5c
+
+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>
+---
+ drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h | 1 +
+ drivers/gpu/drm/nouveau/nouveau_connector.c | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h
+index f5f59261ea81..d1beaad0c82b 100644
+--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h
++++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/conn.h
+@@ -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,
+diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
+index 8b4b3688c7ae..4c992fd5bd68 100644
+--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
++++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
+@@ -1210,6 +1210,7 @@ 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 :
+--
+2.29.2
+