media: staging: atomisp: Remove ->power_ctrl() callback

There is redundant callback which does nothing in upstreamed version of
the driver.

Remove it along with user call places.

Mostly done with help of coccinelle.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/staging/media/atomisp/i2c/atomisp-gc0310.c

@@ -737,10 +737,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (flag) {
 		/* The upstream module driver (written to Crystal
 		 * Cove) had this logic to pulse the rails low first.

drivers/staging/media/atomisp/i2c/atomisp-gc2235.c

@@ -547,10 +547,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (flag) {
 		ret = dev->platform_data->v1p8_ctrl(sd, 1);
 		usleep_range(60, 90);

drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c

@@ -454,10 +454,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (flag) {
 		ret = dev->platform_data->v2p8_ctrl(sd, 1);
 		if (ret == 0) {

drivers/staging/media/atomisp/i2c/atomisp-ov2680.c

@@ -846,10 +846,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (flag) {
 		ret |= dev->platform_data->v1p8_ctrl(sd, 1);
 		ret |= dev->platform_data->v2p8_ctrl(sd, 1);

drivers/staging/media/atomisp/i2c/atomisp-ov2722.c

@@ -650,10 +650,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (flag) {
 		ret = dev->platform_data->v1p8_ctrl(sd, 1);
 		if (ret == 0) {

drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c

@@ -1297,10 +1297,6 @@ static int power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	/* This driver assumes "internal DVDD, PWDNB tied to DOVDD".
 	 * In this set up only gpio0 (XSHUTDN) should be available
 	 * but in some products (for example ECS) gpio1 (PWDNB) is

drivers/staging/media/atomisp/i2c/ov8858.c

@@ -712,10 +712,6 @@ static int __power_ctrl(struct v4l2_subdev *sd, bool flag)
 	if (!dev || !dev->platform_data)
 		return -ENODEV;
 
-	/* Non-gmin platforms use the legacy callback */
-	if (dev->platform_data->power_ctrl)
-		return dev->platform_data->power_ctrl(sd, flag);
-
 	if (dev->platform_data->v1p2_ctrl) {
 		ret = dev->platform_data->v1p2_ctrl(sd, flag);
 		if (ret) {

drivers/staging/media/atomisp/include/linux/atomisp_platform.h

@@ -206,7 +206,6 @@ struct camera_vcm_control {
 
 struct camera_sensor_platform_data {
 	int (*flisclk_ctrl)(struct v4l2_subdev *subdev, int flag);
-	int (*power_ctrl)(struct v4l2_subdev *subdev, int flag);
 	int (*csi_cfg)(struct v4l2_subdev *subdev, int flag);
 	bool (*low_fps)(void);
 	int (*platform_init)(struct i2c_client *);
@@ -214,9 +213,10 @@ struct camera_sensor_platform_data {
 	char *(*msr_file_name)(void);
 	struct atomisp_camera_caps *(*get_camera_caps)(void);
 
-	/* New G-Min power and GPIO interface, replaces
-	 * power/gpio_ctrl with methods to control individual
-	 * lines as implemented on all known camera modules. */
+	/*
+	 * New G-Min power and GPIO interface to control individual
+	 * lines as implemented on all known camera modules.
+	 */
 	int (*gpio0_ctrl)(struct v4l2_subdev *subdev, int on);
 	int (*gpio1_ctrl)(struct v4l2_subdev *subdev, int on);
 	int (*v1p8_ctrl)(struct v4l2_subdev *subdev, int on);