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

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Since 2017, there is an space reserved for userspace API,
created by changeset 1d596dee38 ("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>
This commit is contained in:
Mauro Carvalho Chehab
2020-03-04 10:21:39 +01:00
parent 5dfb8db56b
commit 54f38fcae5
464 changed files with 464 additions and 462 deletions
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Documentation/userspace-api/media/rc/lirc-get-timeout.rst Normal file
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.. 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/userspace-api/media/fdl-appendix.rst.
..
.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections
.. _lirc_get_min_timeout:
.. _lirc_get_max_timeout:
****************************************************
ioctls LIRC_GET_MIN_TIMEOUT and LIRC_GET_MAX_TIMEOUT
****************************************************
Name
====
LIRC_GET_MIN_TIMEOUT / LIRC_GET_MAX_TIMEOUT - Obtain the possible timeout
range for IR receive.
Synopsis
========
.. c:function:: int ioctl( int fd, LIRC_GET_MIN_TIMEOUT, __u32 *timeout)
:name: LIRC_GET_MIN_TIMEOUT
.. c:function:: int ioctl( int fd, LIRC_GET_MAX_TIMEOUT, __u32 *timeout)
:name: LIRC_GET_MAX_TIMEOUT
Arguments
=========
``fd``
File descriptor returned by open().
``timeout``
Timeout, in microseconds.
Description
===========
Some devices have internal timers that can be used to detect when
there's no IR activity for a long time. This can help lircd in
detecting that a IR signal is finished and can speed up the decoding
process. Returns an integer value with the minimum/maximum timeout
that can be set.
.. note::
Some devices have a fixed timeout, in that case
both ioctls will return the same value even though the timeout
cannot be changed via :ref:`LIRC_SET_REC_TIMEOUT`.
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.