linux-toradex.git/include/media/v4l2-dev.h, branch v3.4.2

[media] v4l: Add custom compat_ioctl32 operation

2012-03-19T17:06:12+00:00

Drivers implementing custom ioctls need to handle 32-bit/64-bit
compatibility themselves. Provide them with a way to do so.

To avoid circular module dependencies, merge the v4l2-compat-ioctl32
module into videodev. There is no point in keeping them separate, as the
v4l2_compat_ioctl32() function is required by videodev if CONFIG_COMPAT
is set anyway.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l: Fix media_entity_to_video_device macro argument name

2011-06-01T12:42:03+00:00

The name 'entity' is used twice in the macro body, once as the macro
argument, and once as a structure field name. This breaks compilation if
the macro is called with its argument not named 'entity'.

Fix this by renaming the macro argument '__e'. This should avoid
namespace clashes.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Mauro Carvalho Chehab

[media] Revert "V4L/DVB: v4l2-dev: remove get_unmapped_area"

2011-05-20T15:14:40+00:00

This reverts commit c29fcff3daafbf46d64a543c1950bbd206ad8c1c.

Signed-off-by: Bob Liu 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2: use new flag to enable core priority handling

2011-03-22T19:38:16+00:00

Rather than guess which driver supports core priority handling, require drivers
that do to explicitly set the V4L2_FL_USE_FH_PRIO flag in video_device.

Updated the core prio handling accordingly and set the flag in the three
drivers that do.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2: add v4l2_prio_state to v4l2_device and video_device

2011-03-22T19:37:55+00:00

Integrate the v4l2_prio_state into the core, ready for use.

One struct v4l2_prio_state is added to v4l2_device and a pointer
to a prio state is added to video_device.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2_prio: move from v4l2-common to v4l2-dev

2011-03-22T19:37:54+00:00

We are going to move priority handling into the v4l2 core. As a consequence
the v4l2_prio helper functions need to be moved into the core videodev
module as well to prevent circular dependencies.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l: Make video_device inherit from media_entity

2011-03-22T07:53:19+00:00

V4L2 devices are media entities. As such they need to inherit from
(include) the media_entity structure.

When registering/unregistering the device, the media entity is
automatically registered/unregistered. The entity is acquired on device
open and released on device close.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Sakari Ailus 
Acked-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l: subdev: Add device node support

2011-03-21T23:32:42+00:00

Create a device node named subdevX for every registered subdev.

As the device node is registered before the subdev core::s_config
function is called, return -EGAIN on open until initialization
completes.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Vimarsh Zutshi 
Acked-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

V4L/DVB: v4l2: add core serialization lock

2010-10-21T03:06:14+00:00

Drivers can optionally set a pointer to a mutex in struct video_device.
The core will use that to lock before calling open, read, write, unlocked_ioctl,
poll, mmap or release.

Updated the documentation as well and ensure that v4l2-event knows about the
lock: it will unlock it before doing a blocking wait on an event and relock it
afterwards.

Ensure that the 'video_is_registered' check is done when the lock is held:
a typical disconnect will take the lock as well before unregistering the
device nodes, so to prevent race conditions the video_is_registered check
should also be done with the lock held.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

V4L/DVB: v4l2-dev: remove get_unmapped_area

2010-10-21T03:06:14+00:00

The get_unmapped_area file operation is unused. Remove.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab