[media] V4L: soc-camera: make (almost) all client drivers re-usable outside of the framework
The most important change in this patch is direct linking to struct
soc_camera_link via the client->dev.platform_data pointer. This makes most
of the soc-camera client drivers also usable outside of the soc-camera
framework. After this change all what is needed for these drivers to
function are inclusions of soc-camera headers for some convenience macros,
suitably configured platform data, which is anyway always required, and
loaded soc-camera core module for library functions. If desired, these
library functions can be made generic in the future and moved to a more
neutral location.
The only two client drivers, that still depend on soc-camera are:
mt9t031: it uses struct video_device for its PM. Since no hardware is
available, alternative methods cannot be tested.
ov6650: it uses struct soc_camera_device to pass its sense data back to
the bridge driver. A generic v4l2-subdevice approach should be developed
to perform this.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index dac5759..b1377b9 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -253,14 +253,14 @@
#include <linux/i2c.h>
static inline struct video_device *soc_camera_i2c_to_vdev(const struct i2c_client *client)
{
- struct soc_camera_device *icd = client->dev.platform_data;
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct soc_camera_device *icd = (struct soc_camera_device *)sd->grp_id;
return icd ? icd->vdev : NULL;
}
static inline struct soc_camera_link *soc_camera_i2c_to_link(const struct i2c_client *client)
{
- struct soc_camera_device *icd = client->dev.platform_data;
- return icd ? to_soc_camera_link(icd) : NULL;
+ return client->dev.platform_data;
}
static inline struct v4l2_subdev *soc_camera_vdev_to_subdev(const struct video_device *vdev)