diff --git a/libc/kernel/uapi/linux/v4l2-subdev.h b/libc/kernel/uapi/linux/v4l2-subdev.h
index da81738..779002b 100644
--- a/libc/kernel/uapi/linux/v4l2-subdev.h
+++ b/libc/kernel/uapi/linux/v4l2-subdev.h
@@ -38,12 +38,18 @@
   struct v4l2_rect rect;
   __u32 reserved[8];
 };
+#define V4L2_SUBDEV_MBUS_CODE_CSC_COLORSPACE 0x00000001
+#define V4L2_SUBDEV_MBUS_CODE_CSC_XFER_FUNC 0x00000002
+#define V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC 0x00000004
+#define V4L2_SUBDEV_MBUS_CODE_CSC_HSV_ENC V4L2_SUBDEV_MBUS_CODE_CSC_YCBCR_ENC
+#define V4L2_SUBDEV_MBUS_CODE_CSC_QUANTIZATION 0x00000008
 struct v4l2_subdev_mbus_code_enum {
   __u32 pad;
   __u32 index;
   __u32 code;
   __u32 which;
-  __u32 reserved[8];
+  __u32 flags;
+  __u32 reserved[7];
 };
 struct v4l2_subdev_frame_size_enum {
   __u32 index;