Commit 5413b648 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab

[media] doc-rst: document LIRC_GET_LENGTH ioctl

Put documentation for this ioctl on its own page.
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 76e23479
.. -*- coding: utf-8; mode: rst -*-
.. _lirc_get_length:
*********************
ioctl LIRC_GET_LENGTH
*********************
Name
====
LIRC_GET_LENGTH - Retrieves the code length in bits.
Synopsis
========
.. cpp:function:: int ioctl( int fd, int request, __u32 *length )
Arguments
=========
``fd``
File descriptor returned by open().
``request``
LIRC_GET_LENGTH
``length``
length, in bits
Description
===========
Retrieves the code length in bits (only for ``LIRC-MODE-LIRCCODE``).
Reads on the device must be done in blocks matching the bit count.
The bit could should be rounded up so that it matches full bytes.
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.
...@@ -18,4 +18,5 @@ LIRC Device Interface ...@@ -18,4 +18,5 @@ LIRC Device Interface
lirc-get-rec-resolution lirc-get-rec-resolution
lirc-set-send-duty-cycle lirc-set-send-duty-cycle
lirc-get-timeout lirc-get-timeout
lirc-get-length
lirc_ioctl lirc_ioctl
...@@ -46,17 +46,6 @@ device can rely on working with the default settings initially. ...@@ -46,17 +46,6 @@ device can rely on working with the default settings initially.
.. _lirc-request: .. _lirc-request:
I/O control requests
====================
.. _LIRC_GET_LENGTH:
``LIRC_GET_LENGTH``
Retrieves the code length in bits (only for ``LIRC_MODE_LIRCCODE).``
Reads on the device must be done in blocks matching the bit count.
The bit could should be rounded up so that it matches full bytes.
.. _LIRC_SET_SEND_MODE: .. _LIRC_SET_SEND_MODE:
.. _LIRC_SET_REC_MODE: .. _LIRC_SET_REC_MODE:
......
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