Documentation/DocBook/media/dvb/fe-get-info.xml



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<refentry id="FE_GET_INFO">
  <refmeta>
    <refentrytitle>ioctl FE_GET_INFO</refentrytitle>
    &manvol;
  </refmeta>

  <refnamediv>
    <refname>FE_GET_INFO</refname>
    <refpurpose>Query DVB frontend capabilities and returns information about
	the front-end. This call only requires read-only access to the device</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <funcsynopsis>
      <funcprototype>
	<funcdef>int <function>ioctl</function></funcdef>
	<paramdef>int <parameter>fd</parameter></paramdef>
	<paramdef>int <parameter>request</parameter></paramdef>
	<paramdef>struct dvb_frontend_info *<parameter>argp</parameter></paramdef>
      </funcprototype>
    </funcsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Arguments</title>
        <variablelist>
      <varlistentry>
	<term><parameter>fd</parameter></term>
	<listitem>
	  <para>&fe_fd;</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><parameter>request</parameter></term>
	<listitem>
	  <para>FE_GET_INFO</para>
	</listitem>
      </varlistentry>
      <varlistentry>
	<term><parameter>argp</parameter></term>
	<listitem>
	    <para>pointer to struct &dvb-frontend-info;</para>
	</listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>Description</title>

    <para>All DVB frontend devices support the
<constant>FE_GET_INFO</constant> ioctl. It is used to identify
kernel devices compatible with this specification and to obtain
information about driver and hardware capabilities. The ioctl takes a
pointer to dvb_frontend_info which is filled by the driver. When the
driver is not compatible with this specification the ioctl returns an error.
</para>
&return-value-dvb;

    <table pgwide="1" frame="none" id="dvb-frontend-info">
      <title>struct <structname>dvb_frontend_info</structname></title>
      <tgroup cols="3">
	&cs-str;