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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2009-12-09 12:39:54 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-22 00:32:42 +0100 |
| commit | ea8aa4349e11c62242a8908fc172de27d7a151d7 (patch) | |
| tree | b079fb17ea30defa24b394daac41679074a5a690 /Documentation/video4linux/v4l2-framework.txt | |
| parent | [media] v4l: subdev: Uninline the v4l2_subdev_init function (diff) | |
| download | linux-ea8aa4349e11c62242a8908fc172de27d7a151d7.tar.xz linux-ea8aa4349e11c62242a8908fc172de27d7a151d7.zip | |
[media] v4l: subdev: Control ioctls support
Pass the control-related ioctls to the subdev driver through the control
framework.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation/video4linux/v4l2-framework.txt')
| -rw-r--r-- | Documentation/video4linux/v4l2-framework.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index 8b358710b2f7..1feecfc59c3d 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -334,6 +334,22 @@ for all registered sub-devices marked with V4L2_SUBDEV_FL_HAS_DEVNODE by calling v4l2_device_register_subdev_nodes(). Those device nodes will be automatically removed when sub-devices are unregistered. +The device node handles a subset of the V4L2 API. + +VIDIOC_QUERYCTRL +VIDIOC_QUERYMENU +VIDIOC_G_CTRL +VIDIOC_S_CTRL +VIDIOC_G_EXT_CTRLS +VIDIOC_S_EXT_CTRLS +VIDIOC_TRY_EXT_CTRLS + + The controls ioctls are identical to the ones defined in V4L2. They + behave identically, with the only exception that they deal only with + controls implemented in the sub-device. Depending on the driver, those + controls can be also be accessed through one (or several) V4L2 device + nodes. + I2C sub-device drivers ---------------------- |