i2c: core: Add support for 'i2c-bus' subnode
[cascardo/linux.git] / Documentation / DocBook / media / dvb / fe-diseqc-reset-overload.xml
1 <refentry id="FE_DISEQC_RESET_OVERLOAD">
2   <refmeta>
3     <refentrytitle>ioctl FE_DISEQC_RESET_OVERLOAD</refentrytitle>
4     &manvol;
5   </refmeta>
6
7   <refnamediv>
8     <refname>FE_DISEQC_RESET_OVERLOAD</refname>
9     <refpurpose>Restores the power to the antenna subsystem, if it was powered
10         off due to power overload.</refpurpose>
11   </refnamediv>
12
13   <refsynopsisdiv>
14     <funcsynopsis>
15       <funcprototype>
16         <funcdef>int <function>ioctl</function></funcdef>
17         <paramdef>int <parameter>fd</parameter></paramdef>
18         <paramdef>int <parameter>request</parameter></paramdef>
19         <paramdef>NULL</paramdef>
20       </funcprototype>
21     </funcsynopsis>
22   </refsynopsisdiv>
23
24   <refsect1>
25     <title>Arguments</title>
26         <variablelist>
27       <varlistentry>
28         <term><parameter>fd</parameter></term>
29         <listitem>
30           <para>&fe_fd;</para>
31         </listitem>
32       </varlistentry>
33       <varlistentry>
34         <term><parameter>request</parameter></term>
35         <listitem>
36           <para>FE_DISEQC_RESET_OVERLOAD</para>
37         </listitem>
38       </varlistentry>
39     </variablelist>
40   </refsect1>
41
42   <refsect1>
43     <title>Description</title>
44
45     <para>If the bus has been automatically powered off due to power overload, this ioctl
46  call restores the power to the bus. The call requires read/write access to the
47  device. This call has no effect if the device is manually powered off. Not all
48  DVB adapters support this ioctl.</para>
49 &return-value-dvb;
50 </refsect1>
51 </refentry>