media: docs: move uAPI book to userspace-api/media

Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee3862 ("docs: Create a user-space API guide").

As the media subsystem was one of the first subsystems to use
Sphinx, until this patch, we were keeping things on a separate
place.

Let's just use the new location, as having all uAPI altogether
will likely make things easier for developers.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 0 insertions, 120 deletions

diff --git a/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst b/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst
deleted file mode 100644
index 6b4bf9ef5606..000000000000
--- a/Documentation/media/uapi/v4l/vidioc-subdev-enum-frame-interval.rst
+++ /dev/null
@@ -1,120 +0,0 @@
-.. Permission is granted to copy, distribute and/or modify this
-.. document under the terms of the GNU Free Documentation License,
-.. Version 1.1 or any later version published by the Free Software
-.. Foundation, with no Invariant Sections, no Front-Cover Texts
-.. and no Back-Cover Texts. A copy of the license is included at
-.. Documentation/media/uapi/fdl-appendix.rst.
-..
-.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
-
-.. _VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL:
-
-***************************************
-ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL
-***************************************
-
-Name
-====
-
-VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL - Enumerate frame intervals
-
-
-Synopsis
-========
-
-.. c:function:: int ioctl( int fd, VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, struct v4l2_subdev_frame_interval_enum * argp )
-    :name: VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL
-
-
-Arguments
-=========
-
-``fd``
-    File descriptor returned by :ref:`open() <func-open>`.
-
-``argp``
-    Pointer to struct :c:type:`v4l2_subdev_frame_interval_enum`.
-
-
-Description
-===========
-
-This ioctl lets applications enumerate available frame intervals on a
-given sub-device pad. Frame intervals only makes sense for sub-devices
-that can control the frame period on their own. This includes, for
-instance, image sensors and TV tuners.
-
-For the common use case of image sensors, the frame intervals available
-on the sub-device output pad depend on the frame format and size on the
-same pad. Applications must thus specify the desired format and size
-when enumerating frame intervals.
-
-To enumerate frame intervals applications initialize the ``index``,
-``pad``, ``which``, ``code``, ``width`` and ``height`` fields of struct
-:c:type:`v4l2_subdev_frame_interval_enum`
-and call the :ref:`VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL` ioctl with a pointer
-to this structure. Drivers fill the rest of the structure or return an
-EINVAL error code if one of the input fields is invalid. All frame
-intervals are enumerable by beginning at index zero and incrementing by
-one until ``EINVAL`` is returned.
-
-Available frame intervals may depend on the current 'try' formats at
-other pads of the sub-device, as well as on the current active links.
-See :ref:`VIDIOC_SUBDEV_G_FMT` for more
-information about the try formats.
-
-Sub-devices that support the frame interval enumeration ioctl should
-implemented it on a single pad only. Its behaviour when supported on
-multiple pads of the same sub-device is not defined.
-
-.. c:type:: v4l2_subdev_frame_interval_enum
-
-.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
-
-.. flat-table:: struct v4l2_subdev_frame_interval_enum
-    :header-rows:  0
-    :stub-columns: 0
-    :widths:       1 1 2
-
-    * - __u32
-      - ``index``
-      - Number of the format in the enumeration, set by the application.
-    * - __u32
-      - ``pad``
-      - Pad number as reported by the media controller API.
-    * - __u32
-      - ``code``
-      - The media bus format code, as defined in
-	:ref:`v4l2-mbus-format`.
-    * - __u32
-      - ``width``
-      - Frame width, in pixels.
-    * - __u32
-      - ``height``
-      - Frame height, in pixels.
-    * - struct :c:type:`v4l2_fract`
-      - ``interval``
-      - Period, in seconds, between consecutive video frames.
-    * - __u32
-      - ``which``
-      - Frame intervals to be enumerated, from enum
-	:ref:`v4l2_subdev_format_whence <v4l2-subdev-format-whence>`.
-    * - __u32
-      - ``reserved``\ [8]
-      - Reserved for future extensions. Applications and drivers must set
-	the array to zero.
-
-
-Return Value
-============
-
-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.
-
-EINVAL
-    The struct
-    :c:type:`v4l2_subdev_frame_interval_enum`
-    ``pad`` references a non-existing pad, one of the ``code``,
-    ``width`` or ``height`` fields are invalid for the given pad or the
-    ``index`` field is out of bounds.