drm/nouveau: dcb table quirk for fdo#50830

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 2f11e16a81a9..a0a3fe3c016b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -6091,6 +6091,18 @@ apply_dcb_encoder_quirks(struct drm_device *dev, int idx, u32 *conn, u32 *conf)
                 }
         }
 
+        /* fdo#50830: connector indices for VGA and DVI-I are backwards */
+        if (nv_match_device(dev, 0x0421, 0x3842, 0xc793)) {
+                if (idx == 0 && *conn == 0x02000300)
+                        *conn = 0x02011300;
+                else
+                if (idx == 1 && *conn == 0x04011310)
+                        *conn = 0x04000310;
+                else
+                if (idx == 2 && *conn == 0x02011312)
+                        *conn = 0x02000312;
+        }
+
         return true;
 }