#include <linux/videodev2.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
 #include <media/v4l2-fwnode.h>
 #include <media/v4l2-image-sizes.h>
 #include <media/v4l2-mediabus.h>
 
 /* Subdev core operations registration */
 static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = {
+       .subscribe_event        = v4l2_ctrl_subdev_subscribe_event,
+       .unsubscribe_event      = v4l2_event_subdev_unsubscribe,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
        .g_register             = ov5647_sensor_get_register,
        .s_register             = ov5647_sensor_set_register,