drm_mode_mode_cmd  758 include/uapi/drm/drm.h #define DRM_IOCTL_MODE_ATTACHMODE	DRM_IOWR(0xA8, struct drm_mode_mode_cmd) /* deprecated (never worked) */
drm_mode_mode_cmd  759 include/uapi/drm/drm.h #define DRM_IOCTL_MODE_DETACHMODE	DRM_IOWR(0xA9, struct drm_mode_mode_cmd) /* deprecated (never worked) */