diff --git a/include/linux/i2c/mcs.h b/include/linux/i2c/mcs.h
index 725ae7c..61bb18a 100644
--- a/include/linux/i2c/mcs.h
+++ b/include/linux/i2c/mcs.h
@@ -18,6 +18,7 @@
 #define MCS_KEY_CODE(v)		((v) & 0xffff)
 
 struct mcs_platform_data {
+	void (*poweron)(bool);
 	void (*cfg_pin)(void);
 
 	/* touchscreen */