diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2011-05-23 14:36:55 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-28 00:55:39 +0400 |
| commit | aec67f054205da77f83ba52f83239225d6cbe366 (patch) | |
| tree | a291e77724025a388fbb7acbd041cddbec072b57 /Documentation/DocBook/media/v4l/vidioc-queryctrl.xml | |
| parent | b6d17a56c8431810709794ceb44d2454976e3ce1 (diff) | |
| download | linux-aec67f054205da77f83ba52f83239225d6cbe366.tar.xz | |
[media] DocBook: document V4L2_CTRL_TYPE_BITMASK
[mchehab@redhat.com: Fix a merge conflict and make compat.xml coherent with v4l2.xml]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/DocBook/media/v4l/vidioc-queryctrl.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/vidioc-queryctrl.xml | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml index 0d5e8283cf32..677ea646c29f 100644 --- a/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml +++ b/Documentation/DocBook/media/v4l/vidioc-queryctrl.xml @@ -156,7 +156,8 @@ signed value.</entry> <entry>Maximum value, inclusive. This field gives an upper bound for <constant>V4L2_CTRL_TYPE_INTEGER</constant> controls and the highest valid index for <constant>V4L2_CTRL_TYPE_MENU</constant> -controls. +controls. For <constant>V4L2_CTRL_TYPE_BITMASK</constant> controls it is the +set of usable bits. For <constant>V4L2_CTRL_TYPE_STRING</constant> controls the maximum value gives the maximum length of the string. This length <emphasis>does not include the terminating zero</emphasis>. It may not be valid for any other type of control, including @@ -291,6 +292,15 @@ the menu items can be enumerated with the <constant>VIDIOC_QUERYMENU</constant> ioctl.</entry> </row> <row> + <entry><constant>V4L2_CTRL_TYPE_BITMASK</constant></entry> + <entry>0</entry> + <entry>n/a</entry> + <entry>any</entry> + <entry>A bitmask field. The maximum value is the set of bits that can +be used, all other bits are to be 0. The maximum value is interpreted as a __u32, +allowing the use of bit 31 in the bitmask.</entry> + </row> + <row> <entry><constant>V4L2_CTRL_TYPE_BUTTON</constant></entry> <entry>0</entry> <entry>0</entry> |