tree e1b4a93f5831616dcda0c04dd4201a53e8e8e78e
parent 3fb0ee8b3b79ee9c8fb7769bdf802bffeae7e085
author Jacopo Mondi <jacopo@jmondi.org> 1588864370 +0200
committer Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 1589295847 +0200

media: v4l2-dev: Add v4l2_device_register_ro_subdev_node()

Add to the V4L2 core a function to register device nodes for video
subdevices in read-only mode.

Registering a device node in read-only mode is useful to expose to
userspace the current sub-device configuration, without allowing
application to change it by using the V4L2 subdevice ioctls.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>