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authorSakari Ailus <sakari.ailus@linux.intel.com>2023-09-06 13:51:04 +0300
committerHans Verkuil <hverkuil-cisco@xs4all.nl>2024-04-29 15:56:37 +0300
commit91e99e5a0bed1084ab5db2a69923b248039408ae (patch)
tree33281a751d98c1ca7e6953aa6f08fa4d3811d283 /Documentation/userspace-api
parent83a22a07cd9d51b7ffd18a8904e1857061eda28f (diff)
downloadlinux-91e99e5a0bed1084ab5db2a69923b248039408ae.tar.xz
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.rst7
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