linux-stable.git/include/media/v4l2-dev.h, branch v4.6

[media] media: v4l-core add enable/disable source common interfaces

2016-02-27T11:33:29+00:00

Add a new interfaces to be used by v4l-core to invoke enable
source and disable_source handlers in the media_device. The
enable_source helper function invokes the enable_source handler
to find media source entity connected to the entity and check
is it is available or busy. If source is available, link is
activated and pipeline is started. The disable_source helper
function invokes the disable_source handler to deactivate and
stop the pipeline.

Signed-off-by: Shuah Khan 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2-core: create MC interfaces for devnodes

2016-01-11T14:18:57+00:00

V4L2 device (and subdevice) nodes should create an interface, if the
Media Controller support is enabled.

Please notice that radio devices should not create an entity, as radio
input/output is either via wires or via ALSA.

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

[media] v4l2-core: remove the old .ioctl BKL replacement

2015-03-02T20:06:56+00:00

To keep V4L2 drivers that did not yet convert to unlocked_ioctl happy,
the v4l2 core had a .ioctl file operation that took a V4L2 lock.

The last drivers are now converted to unlocked_ioctl, so all this
old code can now be removed.

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

[media] v4l2 core: improve debug flag handling

2014-12-23T12:31:37+00:00

The old debug field is renamed to dev_debug to ensure that existing drivers
(including out-of-tree drivers) that try to use the old name will no longer
compile. A comment has also been added that makes it explicit that drivers
shouldn't use this field.

Additional bits have been added to the debug flag to be more fine-grained
when debugging, especially when dealing with streaming ioctls and read,
write and poll. You want to enable those explicitly to prevent flooding
the log when streaming unless you actually want to do that.

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

[media] media: v4l2-dev.h: remove V4L2_FL_USE_FH_PRIO flag

2014-07-04T19:15:16+00:00

Since none of the drivers are using it, this flag can be removed.

Signed-off-by: Ramakrishnan Muthukrishnan 
Reviewed-by: Hans Verkuil 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l: add device type for Software Defined Radio

2014-03-05T17:14:59+00:00

Add new V4L device type VFL_TYPE_SDR for Software Defined Radio.
It is registered as /dev/swradio0 (/dev/sdr0 was already reserved).

Signed-off-by: Antti Palosaari 
Acked-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2: always require v4l2_dev, rename parent to dev_parent

2013-06-21T14:07:12+00:00

The last set of drivers still using the parent field of video_device instead
of the v4l2_dev field have been converted, so v4l2_dev is now always set.
A proper pointer to v4l2_dev is necessary these days otherwise the advanced
debugging ioctls will not work when addressing sub-devices. It also ensures
that the core can always go from a video_device struct to the top-level
v4l2_device struct.
There is still one single use case for the parent pointer: if there are
multiple busses, each being the parent of one or more video nodes, and if
they all share the same v4l2_device struct. In that case one still needs a
parent pointer since the v4l2_device struct can only refer to a single
parent device. The cx88 driver is one such case. Unfortunately, the cx88
failed to set the parent pointer since 3.6. The next patch will correct this.
In order to support this use-case the parent pointer is only renamed to
dev_parent, not removed altogether. It has been renamed to ensure that the
compiler will catch any (possibly out-of-tree) drivers that were missed during
the conversion.

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

[media] v4l2: remove deprecated current_norm support completely

2013-06-17T12:39:53+00:00

The use of current_norm to keep track of the current standard has been
deprecated for quite some time. Now that all drivers that were using it
have been converted to use g_std we can drop it from the core.
It was a bad idea to introduce this at the time: since it is a per-device
node field it didn't work for drivers that create multiple nodes, all sharing
the same tuner (e.g. video and vbi nodes, or a raw video node and a compressed
video node). In addition it was very surprising behavior that g_std was
implemented in the core. Often drivers implemented both g_std and current_norm,
because they didn't understand how it should be used.
Since the benefits were very limited (if they were there at all), it is better
to just drop it and require that drivers just implement g_std.

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

[media] v4l2-dev: add new VFL_DIR_ defines

2012-09-26T14:03:53+00:00

These will be used by v4l2-dev.c to improve ioctl checking.
I.e. ioctls for capture should return -ENOTTY when called for
an output device.

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

[media] v4l2-dev: remove V4L2_FL_LOCK_ALL_FOPS

2012-08-09T23:18:16+00:00

All drivers that needed V4L2_FL_LOCK_ALL_FOPS have been converted,
so remove this flag altogether.

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