Based on kernel version 4.7.2. Page generated on 2016-08-22 22:44 EST.
1 <refentry id="FE_GET_PROPERTY"> 2 <refmeta> 3 <refentrytitle>ioctl FE_SET_PROPERTY, FE_GET_PROPERTY</refentrytitle> 4 &manvol; 5 </refmeta> 6 7 <refnamediv> 8 <refname>FE_SET_PROPERTY</refname> 9 <refname>FE_GET_PROPERTY</refname> 10 <refpurpose>FE_SET_PROPERTY sets one or more frontend properties. 11 FE_GET_PROPERTY returns one or more frontend properties.</refpurpose> 12 </refnamediv> 13 14 <refsynopsisdiv> 15 <funcsynopsis> 16 <funcprototype> 17 <funcdef>int <function>ioctl</function></funcdef> 18 <paramdef>int <parameter>fd</parameter></paramdef> 19 <paramdef>int <parameter>request</parameter></paramdef> 20 <paramdef>struct dtv_properties *<parameter>argp</parameter></paramdef> 21 </funcprototype> 22 </funcsynopsis> 23 </refsynopsisdiv> 24 25 <refsect1> 26 <title>Arguments</title> 27 <variablelist> 28 <varlistentry> 29 <term><parameter>fd</parameter></term> 30 <listitem> 31 <para>&fe_fd;</para> 32 </listitem> 33 </varlistentry> 34 <varlistentry> 35 <term><parameter>request</parameter></term> 36 <listitem> 37 <para>FE_SET_PROPERTY, FE_GET_PROPERTY</para> 38 </listitem> 39 </varlistentry> 40 <varlistentry> 41 <term><parameter>argp</parameter></term> 42 <listitem> 43 <para>pointer to &dtv-properties;</para> 44 </listitem> 45 </varlistentry> 46 </variablelist> 47 </refsect1> 48 49 <refsect1> 50 <title>Description</title> 51 52 <para>All DVB frontend devices support the 53 <constant>FE_SET_PROPERTY</constant> and <constant>FE_GET_PROPERTY</constant> 54 ioctls. The supported properties and statistics depends on the delivery system 55 and on the device:</para> 56 <itemizedlist> 57 <listitem> 58 <para><constant>FE_SET_PROPERTY:</constant></para> 59 <itemizedlist> 60 <listitem><para>This ioctl is used to set one or more 61 frontend properties.</para></listitem> 62 <listitem><para>This is the basic command to request the frontend to tune into some 63 frequency and to start decoding the digital TV signal.</para></listitem> 64 <listitem><para>This call requires read/write access to the device.</para></listitem> 65 <listitem><para>At return, the values are updated to reflect the 66 actual parameters used.</para></listitem> 67 </itemizedlist> 68 </listitem> 69 <listitem> 70 <para><constant>FE_GET_PROPERTY:</constant></para> 71 <itemizedlist> 72 <listitem><para>This ioctl is used to get properties and 73 statistics from the frontend.</para></listitem> 74 <listitem><para>No properties are changed, and statistics aren't reset.</para></listitem> 75 <listitem><para>This call only requires read-only access to the device.</para></listitem> 76 </itemizedlist> 77 </listitem> 78 </itemizedlist> 79 &return-value-dvb; 80 </refsect1> 81 </refentry>