[media] V4L: Add camera exposure bias control
authorSylwester Nawrocki <s.nawrocki@samsung.com>
Tue, 6 Mar 2012 10:06:55 +0000 (07:06 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Mon, 14 May 2012 17:03:47 +0000 (14:03 -0300)
commitd58083c949b3d76aba225be9f303ab5dab585064
tree3181333e4eacbdcc10743aee341ba6bbbd1adf1e
parent515f32879a05bdb69f9b3f86f53db4c04b95e845
[media] V4L: Add camera exposure bias control

The camera may in some conditions incorrectly determine the exposure,
and a manual automatic exposure correction may be needed. This patch
adds V4L2_CID_AUTO_EXPOSURE_BIAS control which allows to add some
offset in the automatic exposure control loop, to compensate for
frame under- or over-exposure.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Documentation/DocBook/media/v4l/controls.xml
drivers/media/video/v4l2-ctrls.c
include/linux/videodev2.h