summaryrefslogtreecommitdiffstats
path: root/Documentation/userspace-api
diff options
context:
space:
mode:
authorNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>2020-04-21 15:57:38 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2020-05-06 12:08:25 +0200
commitf645e6256bd1b12523b759fcc610861fb21c24c7 (patch)
treedf1fc55bdf247837d7f13dddf9e30dacb7fcc486 /Documentation/userspace-api
parent92f0fa8b5df43a88e0a0a7d9f4cbebc079bdcf79 (diff)
downloadlinux-f645e6256bd1b12523b759fcc610861fb21c24c7.tar.bz2
media: v4l2-dev/ioctl: Add V4L2_CAP_IO_MC
Add a video device capability flag to indicate that its inputs and/or outputs are controlled by the Media Controller instead of the V4L2 API. When this flag is set, ioctl for enum inputs and outputs are automatically enabled and programmed to call a helper function. Suggested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'Documentation/userspace-api')
-rw-r--r--Documentation/userspace-api/media/v4l/vidioc-querycap.rst6
-rw-r--r--Documentation/userspace-api/media/videodev2.h.rst.exceptions1
2 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
index 28e1f766128c..666ac4d42051 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst
@@ -264,6 +264,12 @@ specification the ioctl returns an ``EINVAL`` error code.
* - ``V4L2_CAP_TOUCH``
- 0x10000000
- This is a touch device.
+ * - ``V4L2_CAP_IO_MC``
+ - 0x20000000
+ - There is only one input and/or output seen from userspace. The whole
+ video topology configuration, including which I/O entity is routed to
+ the input/output, is configured by userspace via the Media Controller.
+ See :ref:`media_controller`.
* - ``V4L2_CAP_DEVICE_CAPS``
- 0x80000000
- The driver fills the ``device_caps`` field. This capability can
diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
index cb6ccf91776e..a625fb90e3a9 100644
--- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
+++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
@@ -176,6 +176,7 @@ replace define V4L2_CAP_STREAMING device-capabilities
replace define V4L2_CAP_META_OUTPUT device-capabilities
replace define V4L2_CAP_DEVICE_CAPS device-capabilities
replace define V4L2_CAP_TOUCH device-capabilities
+replace define V4L2_CAP_IO_MC device-capabilities
# V4L2 pix flags
replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format`