linux-toradex.git/include/media/soc_camera.h, branch v3.4.91

[media] V4L: soc-camera: protect hosts during probing from overzealous user-space

2012-04-26T14:30:12+00:00

If multiple clients are registered on a single camera host interface,
the user-space hot-plug software can try to access the one, that probed
first, before probing of the second one has completed. This can be
handled by individual host drivers, but it is even better to hold back
the user-space until all the probing on this host has completed. This
fixes a race on ecovec with two clients registered on the CEU1 host, which
otherwise triggers a BUG() in sh_mobile_ceu_remove_device().

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: remove redundant parameter from .set_bus_param()

2012-01-06T13:00:23+00:00

The "pixfmt" parameter of the struct soc_camera_host_ops::set_bus_param()
method is redundant, because at the time, when this method is called,
pixfmt is guaranteed to be equal to icd->current_fmt->host_fmt->fourcc.
Remove this parameter and update all drivers accordingly.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: fix compiler warnings on 64-bit platforms

2011-12-11T11:34:00+00:00

On 64-bit platforms assigning a pointer to a 32-bit variable causes a
compiler warning and cannot actually work. Soc-camera currently doesn't
support any 64-bit systems, but such platforms can be added in the
and in any case compiler warnings should be avoided.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Janusz Krzysztofik 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: make (almost) all client drivers re-usable outside of the framework

2011-11-03T20:29:03+00:00

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 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: mt9m001, mt9v022: use internally cached pixel code

2011-11-03T20:28:59+00:00

Using the internally cached pixel code, instead of the one, provided by
the soc-camera, removes one more use of struct soc_camera_device in these
drivers. Also remove the no longer needed soc_camera_from_i2c() inline
function.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: start removing struct soc_camera_device from client drivers

2011-11-03T20:28:58+00:00

Remove most trivial uses of struct soc_camera_device from most client
drivers, abstracting some of them inside inline functions. Next steps
will eliminate remaining uses and modify inline functions to not use
struct soc_camera_device.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc_camera: remove the now obsolete struct soc_camera_ops

2011-11-03T20:28:55+00:00

Signed-off-by: Hans Verkuil 
[g.liakhovetski@gmx.de: mt9m001 hunk moved to an earlier patch]
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] sh_mobile_ceu_camera: implement the control handler

2011-11-03T20:28:35+00:00

And since this is the last and only host driver that uses controls, also
remove the now obsolete control fields from soc_camera.h.

Signed-off-by: Hans Verkuil 
[g.liakhovetski@gmx.de: moved code around, fixed problems]
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc_camera: add control handler support

2011-11-03T20:28:34+00:00

The soc_camera framework is switched over to use the control framework.
After this patch none of the controls in subdevs or host drivers are available,
until those drivers are also converted to the control framework.

Signed-off-by: Hans Verkuil 
[g.liakhovetski@gmx.de: moved code around, fixed problems]
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: remove soc-camera client bus-param operations and supporting code

2011-11-03T20:28:18+00:00

soc-camera has been completely ported over to V4L2 subdevice mbus-config
operations, soc-camera client bus-param operations and supporting code
can now be removed.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab