drm/nouveau/devinit: bump priv ring timeouts before executing scripts

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

drivers/gpu/drm/nouveau/core/include/core/device.h

@@ -16,6 +16,7 @@ enum nv_subdev_type {
 	 * to during POST.
 	 */
 	NVDEV_SUBDEV_DEVINIT,
+	NVDEV_SUBDEV_IBUS,
 	NVDEV_SUBDEV_GPIO,
 	NVDEV_SUBDEV_I2C,
 	NVDEV_SUBDEV_DEVINIT_LAST = NVDEV_SUBDEV_I2C,
@@ -31,7 +32,6 @@ enum nv_subdev_type {
 	NVDEV_SUBDEV_TIMER,
 	NVDEV_SUBDEV_FB,
 	NVDEV_SUBDEV_LTC,
-	NVDEV_SUBDEV_IBUS,
 	NVDEV_SUBDEV_INSTMEM,
 	NVDEV_SUBDEV_VM,
 	NVDEV_SUBDEV_BAR,

drivers/gpu/drm/nouveau/core/subdev/devinit/nv50.c

@@ -26,6 +26,7 @@
 #include <subdev/bios/dcb.h>
 #include <subdev/bios/disp.h>
 #include <subdev/bios/init.h>
+#include <subdev/ibus.h>
 #include <subdev/vga.h>
 
 #include "nv50.h"
@@ -91,6 +92,7 @@ int
 nv50_devinit_init(struct nouveau_object *object)
 {
 	struct nouveau_bios *bios = nouveau_bios(object);
+	struct nouveau_ibus *ibus = nouveau_ibus(object);
 	struct nv50_devinit_priv *priv = (void *)object;
 	struct nvbios_outp info;
 	struct dcb_output outp;
@@ -105,6 +107,13 @@ nv50_devinit_init(struct nouveau_object *object)
 		}
 	}
 
+	/* some boards appear to require certain priv register timeouts
+	 * to be bumped before runing devinit scripts.  not a clue why
+	 * the vbios engineers didn't make the scripts just work...
+	 */
+	if (priv->base.post && ibus)
+		nv_ofuncs(ibus)->init(nv_object(ibus));
+
 	ret = nouveau_devinit_init(&priv->base);
 	if (ret)
 		return ret;