soc-camera: switch to using v4l2_subdev_call()

From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>

Use v4l2_subdev_call() instead of v4l2_device_call_until_err() in all host
drivers and in soc-camera core.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Priority: low
---
 drivers/media/video/mx1_camera.c           |   12 ++++------
 drivers/media/video/mx3_camera.c           |   10 ++++----
 drivers/media/video/pxa_camera.c           |    9 ++++---
 drivers/media/video/sh_mobile_ceu_camera.c |   17 ++++++---------
 drivers/media/video/soc_camera.c           |   30 ++++++++++++++-------------
 include/media/soc_camera.h                 |   14 +++++++++---
 6 files changed, 48 insertions(+), 44 deletions(-)

1 files changed, 10 insertions, 4 deletions

diff --git a/linux/include/media/soc_camera.h b/linux/include/media/soc_camera.h
index 0bad8f1d7..344d89904 100644
--- a/linux/include/media/soc_camera.h
+++ b/linux/include/media/soc_camera.h
@@ -126,28 +126,34 @@ struct soc_camera_link {
 	void (*free_bus)(struct soc_camera_link *);
 };
 
-static inline struct soc_camera_device *to_soc_camera_dev(struct device *dev)
+static inline struct soc_camera_device *to_soc_camera_dev(const struct device *dev)
 {
 	return container_of(dev, struct soc_camera_device, dev);
 }
 
-static inline struct soc_camera_host *to_soc_camera_host(struct device *dev)
+static inline struct soc_camera_host *to_soc_camera_host(const struct device *dev)
 {
 	struct v4l2_device *v4l2_dev = dev_get_drvdata(dev);
 
 	return container_of(v4l2_dev, struct soc_camera_host, v4l2_dev);
 }
 
-static inline struct soc_camera_link *to_soc_camera_link(struct soc_camera_device *icd)
+static inline struct soc_camera_link *to_soc_camera_link(const struct soc_camera_device *icd)
 {
 	return icd->dev.platform_data;
 }
 
-static inline struct device *to_soc_camera_control(struct soc_camera_device *icd)
+static inline struct device *to_soc_camera_control(const struct soc_camera_device *icd)
 {
 	return dev_get_drvdata(&icd->dev);
 }
 
+static inline struct v4l2_subdev *soc_camera_to_subdev(const struct soc_camera_device *icd)
+{
+	struct device *control = to_soc_camera_control(icd);
+	return dev_get_drvdata(control);
+}
+
 int soc_camera_host_register(struct soc_camera_host *ici);
 void soc_camera_host_unregister(struct soc_camera_host *ici);