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| author |  Sakari Ailus <sakari.ailus@linux.intel.com>
| 2023-09-06 13:51:04 +0300 |
|---|---|---|
| committer |  Hans Verkuil <hverkuil-cisco@xs4all.nl>
| 2024-04-29 14:56:37 +0200 |
| commit | 91e99e5a0bed1084ab5db2a69923b248039408ae (patch) | |
| tree | 33281a751d98c1ca7e6953aa6f08fa4d3811d283 /Documentation/userspace-api | |
| parent | media: v4l: subdev: Add len_routes field to struct v4l2_subdev_routing (diff) | |
| download | linux-91e99e5a0bed1084ab5db2a69923b248039408ae.tar.gz linux-91e99e5a0bed1084ab5db2a69923b248039408ae.tar.bz2 linux-91e99e5a0bed1084ab5db2a69923b248039408ae.zip | |
media: v4l: subdev: Return routes set using S_ROUTING
Return the routes set using S_ROUTING back to the user. Also reflect this
in documentation.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'Documentation/userspace-api')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst index cbd9370006b6..1cf795480602 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-subdev-g-routing.rst @@ -44,7 +44,8 @@ Drivers report their current routing tables using the ``VIDIOC_SUBDEV_G_ROUTING`` ioctl and application may enable or disable routes with the ``VIDIOC_SUBDEV_S_ROUTING`` ioctl, by adding or removing routes and setting or clearing flags of the ``flags`` field of a struct -:c:type:`v4l2_subdev_route`. +:c:type:`v4l2_subdev_route`. Similarly to ``VIDIOC_SUBDEV_G_ROUTING``, also +``VIDIOC_SUBDEV_S_ROUTING`` returns the routes back to the user. All stream configurations are reset when ``VIDIOC_SUBDEV_S_ROUTING`` is called. This means that the userspace must reconfigure all stream formats and selections @@ -153,10 +154,6 @@ On success 0 is returned, on error -1 and the ``errno`` variable is set appropriately. The generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. -ENOSPC - The application provided ``num_routes`` is not big enough to contain - all the available routes the subdevice exposes. - EINVAL The sink or source pad identifiers reference a non-existing pad or reference pads of different types (ie. the sink_pad identifiers refers to a source |