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, 157 deletions

diff --git a/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst b/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst
deleted file mode 100644
index b827ebc398f8..000000000000
--- a/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst
+++ /dev/null
@@ -1,157 +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
-
-.. _media_ioc_enum_links:
-
-**************************
-ioctl MEDIA_IOC_ENUM_LINKS
-**************************
-
-Name
-====
-
-MEDIA_IOC_ENUM_LINKS - Enumerate all pads and links for a given entity
-
-
-Synopsis
-========
-
-.. c:function:: int ioctl( int fd, MEDIA_IOC_ENUM_LINKS, struct media_links_enum *argp )
-    :name: MEDIA_IOC_ENUM_LINKS
-
-
-Arguments
-=========
-
-``fd``
-    File descriptor returned by :ref:`open() <media-func-open>`.
-
-``argp``
-    Pointer to struct :c:type:`media_links_enum`.
-
-
-Description
-===========
-
-To enumerate pads and/or links for a given entity, applications set the
-entity field of a struct :c:type:`media_links_enum`
-structure and initialize the struct
-:c:type:`media_pad_desc` and struct
-:c:type:`media_link_desc` structure arrays pointed by
-the ``pads`` and ``links`` fields. They then call the
-MEDIA_IOC_ENUM_LINKS ioctl with a pointer to this structure.
-
-If the ``pads`` field is not NULL, the driver fills the ``pads`` array
-with information about the entity's pads. The array must have enough
-room to store all the entity's pads. The number of pads can be retrieved
-with :ref:`MEDIA_IOC_ENUM_ENTITIES`.
-
-If the ``links`` field is not NULL, the driver fills the ``links`` array
-with information about the entity's outbound links. The array must have
-enough room to store all the entity's outbound links. The number of
-outbound links can be retrieved with :ref:`MEDIA_IOC_ENUM_ENTITIES`.
-
-Only forward links that originate at one of the entity's source pads are
-returned during the enumeration process.
-
-
-.. c:type:: media_links_enum
-
-.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
-
-.. flat-table:: struct media_links_enum
-    :header-rows:  0
-    :stub-columns: 0
-    :widths:       1 1 2
-
-    *  -  __u32
-       -  ``entity``
-       -  Entity id, set by the application.
-
-    *  -  struct :c:type:`media_pad_desc`
-       -  \*\ ``pads``
-       -  Pointer to a pads array allocated by the application. Ignored if
-	  NULL.
-
-    *  -  struct :c:type:`media_link_desc`
-       -  \*\ ``links``
-       -  Pointer to a links array allocated by the application. Ignored if
-	  NULL.
-
-    *  -  __u32
-       -  ``reserved[4]``
-       -  Reserved for future extensions. Drivers and applications must set
-          the array to zero.
-
-
-.. c:type:: media_pad_desc
-
-.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
-
-.. flat-table:: struct media_pad_desc
-    :header-rows:  0
-    :stub-columns: 0
-    :widths:       1 1 2
-
-    *  -  __u32
-       -  ``entity``
-       -  ID of the entity this pad belongs to.
-
-    *  -  __u16
-       -  ``index``
-       -  Pad index, starts at 0.
-
-    *  -  __u32
-       -  ``flags``
-       -  Pad flags, see :ref:`media-pad-flag` for more details.
-
-    *  -  __u32
-       -  ``reserved[2]``
-       -  Reserved for future extensions. Drivers and applications must set
-          the array to zero.
-
-
-
-.. c:type:: media_link_desc
-
-.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
-
-.. flat-table:: struct media_link_desc
-    :header-rows:  0
-    :stub-columns: 0
-    :widths:       1 1 2
-
-    *  -  struct :c:type:`media_pad_desc`
-       -  ``source``
-       -  Pad at the origin of this link.
-
-    *  -  struct :c:type:`media_pad_desc`
-       -  ``sink``
-       -  Pad at the target of this link.
-
-    *  -  __u32
-       -  ``flags``
-       -  Link flags, see :ref:`media-link-flag` for more details.
-
-    *  -  __u32
-       -  ``reserved[2]``
-       -  Reserved for future extensions. Drivers and applications 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:`media_links_enum` ``id``
-    references a non-existing entity.