Although this is not needed when using the combination of CREATE_BUFS and
QUERYBUF V4L2 ioctls (as currently done) to allocate and prepare buffers,
the REQBUF ioctl is useful to liberate the buffers after use.
This introduces a helper for this purpose.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Since the V4L2 ioctl is called QUERYBUF, it makes more sense to
call the associated function with the same name.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
The coding style has been a bit erratic. Enforce the linux kernel coding
style by reusing their .clang-format file, running clang-format on the
source, and ignoring the few shortcomings that clang-format has at the
moment (especially on aligning the define values).
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Paul Kocialkowski