/**
* DRM_VMW_GET_PARAM - get device information.
*
- * Currently we support only one parameter:
- *
* DRM_VMW_PARAM_FIFO_OFFSET:
* Offset to use to map the first page of the FIFO read-only.
* The fifo is mapped using the mmap() system call on the drm device.
+ *
+ * DRM_VMW_PARAM_OVERLAY_IOCTL:
+ * Does the driver support the overlay ioctl.
*/
#define DRM_VMW_PARAM_FIFO_OFFSET 0
+#define DRM_VMW_PARAM_OVERLAY_IOCTL 1
/**
* struct drm_vmw_getparam_arg