media: rcar-vin: Move pm_runtime_{get,put} out of helpers

The helpers rvin_power_{on,off} deal with both VIN and the parallel
subdevice power. This makes it hard to merge the Gen2 and Gen3
open/release functions. Move the VIN power handling directly to the
open/release functions to prepare for the merge.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Ulrich Hecht <uli+renesas@fpond.eu>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/rcar-vin/rcar-v4l2.c

@@ -754,8 +754,6 @@ static int rvin_power_on(struct rvin_dev *vin)
 	int ret;
 	struct v4l2_subdev *sd = vin_to_source(vin);
 
-	pm_runtime_get_sync(vin->v4l2_dev.dev);
-
 	ret = v4l2_subdev_call(sd, core, s_power, 1);
 	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
 		return ret;
@@ -768,9 +766,6 @@ static int rvin_power_off(struct rvin_dev *vin)
 	struct v4l2_subdev *sd = vin_to_source(vin);
 
 	ret = v4l2_subdev_call(sd, core, s_power, 0);
-
-	pm_runtime_put(vin->v4l2_dev.dev);
-
 	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
 		return ret;
 
@@ -796,26 +791,36 @@ static int rvin_open(struct file *file)
 	struct rvin_dev *vin = video_drvdata(file);
 	int ret;
 
+	ret = pm_runtime_get_sync(vin->dev);
+	if (ret < 0)
+		return ret;
+
 	ret = mutex_lock_interruptible(&vin->lock);
 	if (ret)
-		return ret;
+		goto err_pm;
 
 	file->private_data = vin;
 
 	ret = v4l2_fh_open(file);
 	if (ret)
-		goto unlock;
-
-	if (!v4l2_fh_is_singular_file(file))
-		goto unlock;
+		goto err_unlock;
 
-	if (rvin_initialize_device(file)) {
-		v4l2_fh_release(file);
-		ret = -ENODEV;
+	if (v4l2_fh_is_singular_file(file)) {
+		ret = rvin_initialize_device(file);
+		if (ret)
+			goto err_open;
 	}
 
-unlock:
 	mutex_unlock(&vin->lock);
+
+	return 0;
+err_open:
+	v4l2_fh_release(file);
+err_unlock:
+	mutex_unlock(&vin->lock);
+err_pm:
+	pm_runtime_put(vin->dev);
+
 	return ret;
 }
 
@@ -842,6 +847,8 @@ static int rvin_release(struct file *file)
 
 	mutex_unlock(&vin->lock);
 
+	pm_runtime_put(vin->dev);
+
 	return ret;
 }