drm/nouveau: add option to allow override of dcb connector table types

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

3 files changed, 12 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 71247da17da5..75388f73cd26 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -5287,10 +5287,16 @@ parse_dcb_connector_table(struct nvbios *bios)
                         break;
                 default:
                         cte->type = divine_connector_type(bios, cte->index);
-                        NV_WARN(dev, "unknown type, using 0x%02x", cte->type);
+                        NV_WARN(dev, "unknown type, using 0x%02x\n", cte->type);
                         break;
                 }
 
+                if (nouveau_override_conntype) {
+                        int type = divine_connector_type(bios, cte->index);
+                        if (type != cte->type)
+                                NV_WARN(dev, " -> type 0x%02x\n", cte->type);
+                }
+
         }
 }
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index 874adf55a43f..f7f28f2f8641 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -83,6 +83,10 @@ MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
 int nouveau_nofbaccel = 0;
 module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
 
+MODULE_PARM_DESC(override_conntype, "Ignore DCB connector type");
+int nouveau_override_conntype = 0;
+module_param_named(override_conntype, nouveau_override_conntype, int, 0400);
+
 MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
                  "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, NTSC-M, NTSC-J,\n"
                  "\t\t\thd480i, hd480p, hd576i, hd576p, hd720p, hd1080i.\n"
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index ad2d75d5dd98..6238e25a0c6b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -689,6 +689,7 @@ extern int nouveau_ctxfw;
 extern int nouveau_ignorelid;
 extern int nouveau_nofbaccel;
 extern int nouveau_noaccel;
+extern int nouveau_override_conntype;
 
 /* nouveau_state.c */
 extern void nouveau_preclose(struct drm_device *dev, struct drm_file *);