diff --git a/libc/kernel/uapi/linux/v4l2-subdev.h b/libc/kernel/uapi/linux/v4l2-subdev.h
index fd1764b..303d167 100644
--- a/libc/kernel/uapi/linux/v4l2-subdev.h
+++ b/libc/kernel/uapi/linux/v4l2-subdev.h
@@ -91,8 +91,12 @@
 #define VIDIOC_SUBDEV_S_CROP _IOWR('V', 60, struct v4l2_subdev_crop)
 #define VIDIOC_SUBDEV_G_SELECTION _IOWR('V', 61, struct v4l2_subdev_selection)
 #define VIDIOC_SUBDEV_S_SELECTION _IOWR('V', 62, struct v4l2_subdev_selection)
+#define VIDIOC_SUBDEV_G_STD _IOR('V', 23, v4l2_std_id)
+#define VIDIOC_SUBDEV_S_STD _IOW('V', 24, v4l2_std_id)
+#define VIDIOC_SUBDEV_ENUMSTD _IOWR('V', 25, struct v4l2_standard)
 #define VIDIOC_SUBDEV_G_EDID _IOWR('V', 40, struct v4l2_edid)
 #define VIDIOC_SUBDEV_S_EDID _IOWR('V', 41, struct v4l2_edid)
+#define VIDIOC_SUBDEV_QUERYSTD _IOR('V', 63, v4l2_std_id)
 #define VIDIOC_SUBDEV_S_DV_TIMINGS _IOWR('V', 87, struct v4l2_dv_timings)
 #define VIDIOC_SUBDEV_G_DV_TIMINGS _IOWR('V', 88, struct v4l2_dv_timings)
 #define VIDIOC_SUBDEV_ENUM_DV_TIMINGS _IOWR('V', 98, struct v4l2_enum_dv_timings)