diff --git a/include/uapi/linux/rk-camera-module.h b/include/uapi/linux/rk-camera-module.h
index e53340e825ca..10df5c5611a8 100644
--- a/include/uapi/linux/rk-camera-module.h
+++ b/include/uapi/linux/rk-camera-module.h
@@ -213,6 +213,12 @@
 #define RKMODULE_GET_SPD_RATIO	\
 	_IOR('V', BASE_VIDIOC_PRIVATE + 49, struct rkmodule_dcg_ratio)
 
+#define RKMODULE_GET_EXP_MODE       \
+	_IOR('V', BASE_VIDIOC_PRIVATE + 50, __u32)
+
+#define RKMODULE_SET_EXP_MODE       \
+	_IOW('V', BASE_VIDIOC_PRIVATE + 51, __u32)
+
 struct rkmodule_i2cdev_info {
 	__u8 slave_addr;
 } __attribute__ ((packed));
@@ -511,6 +517,15 @@ struct rkmodule_hdr_esp {
 	} val;
 };
 
+enum exp_mode_e {
+	EXP_NORMAL = 0,
+	EXP_HDR2_STA,
+	EXP_HDR2_DCG,
+	EXP_HDR3_DCG_VS,
+	EXP_HDR3_DCG_SPD,
+	EXP_HDR3_STA,
+};
+
 struct rkmodule_hdr_cfg {
 	__u32 hdr_mode;
 	struct rkmodule_hdr_esp esp;