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Diffstat (limited to 'Documentation/DocBook/media/v4l/media-func-ioctl.xml')
-rw-r--r-- | Documentation/DocBook/media/v4l/media-func-ioctl.xml | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/Documentation/DocBook/media/v4l/media-func-ioctl.xml b/Documentation/DocBook/media/v4l/media-func-ioctl.xml deleted file mode 100644 index 39478d0fbcaa..000000000000 --- a/Documentation/DocBook/media/v4l/media-func-ioctl.xml +++ /dev/null @@ -1,73 +0,0 @@ -<refentry id="media-func-ioctl"> - <refmeta> - <refentrytitle>media ioctl()</refentrytitle> - &manvol; - </refmeta> - - <refnamediv> - <refname>media-ioctl</refname> - <refpurpose>Control a media device</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <funcsynopsis> - <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo> - <funcprototype> - <funcdef>int <function>ioctl</function></funcdef> - <paramdef>int <parameter>fd</parameter></paramdef> - <paramdef>int <parameter>request</parameter></paramdef> - <paramdef>void *<parameter>argp</parameter></paramdef> - </funcprototype> - </funcsynopsis> - </refsynopsisdiv> - - <refsect1> - <title>Arguments</title> - - <variablelist> - <varlistentry> - <term><parameter>fd</parameter></term> - <listitem> - <para>&fd;</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>request</parameter></term> - <listitem> - <para>Media ioctl request code as defined in the media.h header file, - for example MEDIA_IOC_SETUP_LINK.</para> - </listitem> - </varlistentry> - <varlistentry> - <term><parameter>argp</parameter></term> - <listitem> - <para>Pointer to a request-specific structure.</para> - </listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Description</title> - <para>The <function>ioctl()</function> function manipulates media device - parameters. The argument <parameter>fd</parameter> must be an open file - descriptor.</para> - <para>The ioctl <parameter>request</parameter> code specifies the media - function to be called. It has encoded in it whether the argument is an - input, output or read/write parameter, and the size of the argument - <parameter>argp</parameter> in bytes.</para> - <para>Macros and structures definitions specifying media ioctl requests and - their parameters are located in the media.h header file. All media ioctl - requests, their respective function and parameters are specified in - <xref linkend="media-user-func" />.</para> - </refsect1> - - <refsect1> - &return-value; - - <para>Request-specific error codes are listed in the - individual requests descriptions.</para> - <para>When an ioctl that takes an output or read/write parameter fails, - the parameter remains unmodified.</para> - </refsect1> -</refentry> |