linux.git/include/media/soc_camera.h, branch v3.19

[media] platform: Make use of media_bus_format enum

2014-11-14T19:54:08+00:00

In order to have subsytem agnostic media bus format definitions we've
moved media bus definition to include/uapi/linux/media-bus-format.h and
prefixed values with MEDIA_BUS_FMT instead of V4L2_MBUS_FMT.

Reference new definitions in all platform drivers.

Signed-off-by: Boris Brezillon 
Acked-by: Hans Verkuil 
Acked-by: Sakari Ailus 
Acked-by: Sekhar Nori 
Acked-by: Lad, Prabhakar 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L2: soc-camera: work around unbalanced calls to .s_power()

2013-10-31T06:38:40+00:00

Some non soc-camera drivers, e.g. em28xx, use subdevice drivers, originally
written for soc-camera, which use soc_camera_power_on() and
soc_camera_power_off() helpers to implement their .s_power() methods. Those
helpers in turn can enable and disable a clock, if it is supplied to them
as a parameter. This works well when camera host drivers balance their
calls to subdevices' .s_power() methods. However, some such drivers fail to
do that, which leads to unbalanced calls to v4l2_clk_enable() /
v4l2_clk_disable(), which then in turn produce kernel warnings. Such
behaviour is wrong and should be fixed, however, sometimes it is difficult,
because some of those drivers are rather old and use lots of subdevices,
which all should be tested after such a fix. To support such drivers this
patch adds a work-around, allowing host drivers or platforms to set a flag,
in which case soc-camera helpers will only enable the clock, if it is
disabled, and disable it only once on the first call to .s_power(0).

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

[media] soc-camera: switch to using the new struct v4l2_subdev_platform_data

2013-10-31T06:30:56+00:00

This prepares soc-camera to use struct v4l2_subdev_platform_data for its
subdevice-facing API, which would allow subdevice driver re-use.

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

[media] V4L2: soc-camera: fix uninitialised use compiler warning

2013-06-28T17:57:18+00:00

In scan_async_group() if the size parameter is negative, the sasd pointer
will be used uninitialised:
drivers/media/platform/soc_camera/soc_camera.c: In function "soc_camera_host_register":
drivers/media/platform/soc_camera/soc_camera.c:1514:55: warning: "sasd" may
be used uninitialized in this function [-Wmaybe-uninitialized]
    sasd->asd.match.i2c.adapter_id, sasd->asd.match.i2c.address);
                                                       ^
drivers/media/platform/soc_camera/soc_camera.c:1464:34: note: "sasd" was
declared here
  struct soc_camera_async_subdev *sasd;
Fix this by making "size" and the array, from which it is assigned unsigned.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: add V4L2-async support

2013-06-21T19:34:17+00:00

Add support for asynchronous subdevice probing, using the v4l2-async API.
The legacy synchronous mode is still supported too, which allows to
gradually update drivers and platforms. The selected approach adds a
notifier for each struct soc_camera_device instance, i.e. for each video
device node, even when there are multiple such instances registered with a
single soc-camera host simultaneously.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Hans Verkuil 
Acked-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: switch I2C subdevice drivers to use v4l2-clk

2013-06-21T19:32:36+00:00

Instead of centrally enabling and disabling subdevice master clocks in
soc-camera core, let subdevice drivers do that themselves, using the
V4L2 clock API and soc-camera convenience wrappers.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Hans Verkuil 
Acked-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: add host clock callbacks to start and stop the master clock

2013-06-21T18:35:51+00:00

Currently soc-camera uses a single camera host callback to activate the
interface master clock and to configure the interface for a specific
client. However, during probing we might not have the information about
a client, we just need to activate the clock. Add new camera host driver
callbacks to only start and stop the clock without and client-specific
configuration.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Hans Verkuil 
Acked-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: move common code to soc_camera.c

2013-06-21T18:35:30+00:00

All soc-camera host drivers include a pointer to an soc-camera device in
their host private struct to check, that only one client is connected.
Move this common code to soc_camera.c.

Signed-off-by: Guennadi Liakhovetski 
Acked-by: Hans Verkuil 
Acked-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] soc_camera: replace vdev->parent by vdev->v4l2_dev

2013-06-21T14:02:24+00:00

The parent field will eventually disappear to be replaced by v4l2_dev.
soc_camera does provide a v4l2_device struct but did not point to it in
struct video_device. This is now fixed.
Now the video nodes can be found under the correct platform bus, and
the advanced debug ioctls work correctly as well (the core implementation
of those ioctls requires that v4l2_dev is set correctly).

Signed-off-by: Hans Verkuil 
Acked-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc_camera: Add RGB666 & RGB888 formats

2013-04-04T22:40:08+00:00

Based on work done by Katsuya Matsubara.

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