V4L/DVB (10035): m5602: add a start sending hook in the sensor struct

Signed-off-by: Erik Andrén <erik.andren@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/gspca/m5602/m5602_core.c

@@ -242,6 +242,9 @@ static int m5602_start_transfer(struct gspca_dev *gspca_dev)
 	/* Send start command to the camera */
 	const u8 buffer[4] = {0x13, 0xf9, 0x0f, 0x01};
 
+	if (sd->sensor->start)
+		sd->sensor->start(sd);
+
 	memcpy(buf, buffer, sizeof(buffer));
 	err = usb_control_msg(gspca_dev->dev,
 			      usb_sndctrlpipe(gspca_dev->dev, 0),

drivers/media/video/gspca/m5602/m5602_sensor.h

@@ -58,6 +58,9 @@ struct m5602_sensor {
 	/* Performs a initialization sequence */
 	int (*init)(struct sd *sd);
 
+	/* Executed when the camera starts to send data */
+	int (*start)(struct sd *sd);
+
 	/* Performs a power down sequence */
 	int (*power_down)(struct sd *sd);