tree a86d9d5f2e9817e9faf9d2e06d212d4380924fe9
parent 93596ef7db3e9bcc9306c3e93cf28ce1048858b6
author Hans Verkuil <hans.verkuil@cisco.com> 1326275105 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1327343667 -0200

[media] V4L2: Add per-device-node capabilities

If V4L2_CAP_DEVICE_CAPS is set, then the new device_caps field is filled with
the capabilities of the opened device node.

The capabilities field traditionally contains the capabilities of the physical
device, being a superset of all capabilities available at the several device
nodes. E.g., if you open /dev/video0, then if it contains VBI caps then that means
that there is a corresponding vbi node as well. And the capabilities field of
both the video and vbi nodes should contain identical caps.

However, it would be very useful to also have a capabilities field that contains
just the caps for the currently open device, hence the new CAP bit and field.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>