staging: drm/omap: only advertise rotation prop if supported

For hardware that does not have DMM/TILER, there is no rotation,
so no point in getting userspace's hopes up.
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omapdrm/omap_drv.c

@@ -659,10 +659,12 @@ static void dev_lastclose(struct drm_device *dev)
 
 	DBG("lastclose: dev=%p", dev);
 
-	/* need to restore default rotation state.. not sure if there is
-	 * a cleaner way to restore properties to default state?  Maybe
-	 * a flag that properties should automatically be restored to
-	 * default state on lastclose?
+	if (priv->rotation_prop) {
+		/* need to restore default rotation state.. not sure
+		 * if there is a cleaner way to restore properties to
+		 * default state?  Maybe a flag that properties should
+		 * automatically be restored to default state on
+		 * lastclose?
 		 */
 		for (i = 0; i < priv->num_crtcs; i++) {
 			drm_object_property_set_value(&priv->crtcs[i]->base,
@@ -673,6 +675,7 @@ static void dev_lastclose(struct drm_device *dev)
 			drm_object_property_set_value(&priv->planes[i]->base,
 					priv->rotation_prop, 0);
 		}
+	}
 
 	ret = drm_fb_helper_restore_fbdev_mode(priv->fbdev);
 	if (ret)

drivers/staging/omapdrm/omap_plane.c

@@ -416,6 +416,7 @@ void omap_plane_install_properties(struct drm_plane *plane,
 	struct omap_drm_private *priv = dev->dev_private;
 	struct drm_property *prop;
 
+	if (priv->has_dmm) {
 		prop = priv->rotation_prop;
 		if (!prop) {
 			const struct drm_prop_enum_list props[] = {
@@ -433,6 +434,7 @@ void omap_plane_install_properties(struct drm_plane *plane,
 			priv->rotation_prop = prop;
 		}
 		drm_object_attach_property(obj, prop, 0);
+	}
 
         prop = priv->zorder_prop;
         if (!prop) {