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Diffstat (limited to 'Documentation/DocBook/media/dvb/fe-get-property.xml')
-rw-r--r-- | Documentation/DocBook/media/dvb/fe-get-property.xml | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/DocBook/media/dvb/fe-get-property.xml b/Documentation/DocBook/media/dvb/fe-get-property.xml new file mode 100644 index 000000000000..53a170ed3bd1 --- /dev/null +++ b/Documentation/DocBook/media/dvb/fe-get-property.xml @@ -0,0 +1,81 @@ +<refentry id="FE_GET_PROPERTY"> + <refmeta> + <refentrytitle>ioctl FE_SET_PROPERTY, FE_GET_PROPERTY</refentrytitle> + &manvol; + </refmeta> + + <refnamediv> + <refname>FE_SET_PROPERTY</refname> + <refname>FE_GET_PROPERTY</refname> + <refpurpose>FE_SET_PROPERTY sets one or more frontend properties. + FE_GET_PROPERTY returns one or more frontend properties.</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 dtv_properties *<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_SET_PROPERTY, FE_GET_PROPERTY</para> + </listitem> + </varlistentry> + <varlistentry> + <term><parameter>argp</parameter></term> + <listitem> + <para>pointer to &dtv-properties;</para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Description</title> + + <para>All DVB frontend devices support the +<constant>FE_SET_PROPERTY</constant> and <constant>FE_GET_PROPERTY</constant> +ioctls. The supported properties and statistics depends on the delivery system +and on the device:</para> +<itemizedlist> +<listitem> + <para><constant>FE_SET_PROPERTY:</constant></para> +<itemizedlist> +<listitem><para>This ioctl is used to set one or more + frontend properties.</para></listitem> +<listitem><para>This is the basic command to request the frontend to tune into some + frequency and to start decoding the digital TV signal.</para></listitem> +<listitem><para>This call requires read/write access to the device.</para></listitem> +<listitem><para>At return, the values are updated to reflect the + actual parameters used.</para></listitem> +</itemizedlist> +</listitem> +<listitem> + <para><constant>FE_GET_PROPERTY:</constant></para> +<itemizedlist> +<listitem><para>This ioctl is used to get properties and +statistics from the frontend.</para></listitem> +<listitem><para>No properties are changed, and statistics aren't reset.</para></listitem> +<listitem><para>This call only requires read-only access to the device.</para></listitem> +</itemizedlist> +</listitem> +</itemizedlist> +&return-value-dvb; +</refsect1> +</refentry> |