specification is available at
<ulink url="http://www.eutelsat.com/satellites/4_5_5.html">Eutelsat</ulink>.</para>
-<section id="fe-caps-t">
-<title>frontend capabilities</title>
-<para>Capabilities describe what a frontend can do. Some capabilities can only be supported for
-a specific frontend type.</para>
-<programlisting>
- typedef enum fe_caps {
- FE_IS_STUPID = 0,
- FE_CAN_INVERSION_AUTO = 0x1,
- FE_CAN_FEC_1_2 = 0x2,
- FE_CAN_FEC_2_3 = 0x4,
- FE_CAN_FEC_3_4 = 0x8,
- FE_CAN_FEC_4_5 = 0x10,
- FE_CAN_FEC_5_6 = 0x20,
- FE_CAN_FEC_6_7 = 0x40,
- FE_CAN_FEC_7_8 = 0x80,
- FE_CAN_FEC_8_9 = 0x100,
- FE_CAN_FEC_AUTO = 0x200,
- FE_CAN_QPSK = 0x400,
- FE_CAN_QAM_16 = 0x800,
- FE_CAN_QAM_32 = 0x1000,
- FE_CAN_QAM_64 = 0x2000,
- FE_CAN_QAM_128 = 0x4000,
- FE_CAN_QAM_256 = 0x8000,
- FE_CAN_QAM_AUTO = 0x10000,
- FE_CAN_TRANSMISSION_MODE_AUTO = 0x20000,
- FE_CAN_BANDWIDTH_AUTO = 0x40000,
- FE_CAN_GUARD_INTERVAL_AUTO = 0x80000,
- FE_CAN_HIERARCHY_AUTO = 0x100000,
- FE_CAN_8VSB = 0x200000,
- FE_CAN_16VSB = 0x400000,
- FE_HAS_EXTENDED_CAPS = 0x800000,
- FE_CAN_MULTISTREAM = 0x4000000,
- FE_CAN_TURBO_FEC = 0x8000000,
- FE_CAN_2G_MODULATION = 0x10000000,
- FE_NEEDS_BENDING = 0x20000000,
- FE_CAN_RECOVER = 0x40000000,
- FE_CAN_MUTE_TS = 0x80000000
- } fe_caps_t;
-</programlisting>
-</section>
-
-<section id="dvb-frontend-info">
-<title>frontend information</title>
+<section id="query-dvb-frontend-info">
+<title>Querying frontend information</title>
<para>Information about the frontend ca be queried with
<link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para>
+</section>
-<programlisting>
- struct dvb_frontend_info {
- char name[128];
- fe_type_t type;
- uint32_t frequency_min;
- uint32_t frequency_max;
- uint32_t frequency_stepsize;
- uint32_t frequency_tolerance;
- uint32_t symbol_rate_min;
- uint32_t symbol_rate_max;
- uint32_t symbol_rate_tolerance; /⋆ ppm ⋆/
- uint32_t notifier_delay; /⋆ ms ⋆/
- fe_caps_t caps;
- };
-</programlisting>
+<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>&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 &return-value-dvb;.
+</para>
+
+ <table pgwide="1" frame="none" id="dvb-frontend-info">
+ <title>struct <structname>dvb_frontend_info</structname></title>
+ <tgroup cols="3">
+ &cs-str;
+ <tbody valign="top">
+ <row>
+ <entry>char *</entry>
+ <entry>name[128]</entry>
+ <entry>Name of the frontend</entry>
+ </row><row>
+ <entry>fe_type_t</entry>
+ <entry>type</entry>
+ <entry>DVBv3 type. Should not be used on modern programs, as a
+ frontend may have more than one type. So, the DVBv5 API should
+ be used instead to enumerate and select the frontend type.</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>frequency_min</entry>
+ <entry>Minimal frequency supported by the frontend</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>frequency_max</entry>
+ <entry>Maximal frequency supported by the frontend</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>frequency_stepsize</entry>
+ <entry>Frequency step - all frequencies are multiple of this value</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>frequency_tolerance</entry>
+ <entry>Tolerance of the frequency</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>symbol_rate_min</entry>
+ <entry>Minimal symbol rate (for Cable/Satellite systems), in bauds</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>symbol_rate_max</entry>
+ <entry>Maximal symbol rate (for Cable/Satellite systems), in bauds</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>symbol_rate_tolerance</entry>
+ <entry>Maximal symbol rate tolerance, in ppm</entry>
+ </row><row>
+ <entry>uint32_t</entry>
+ <entry>notifier_delay</entry>
+ <entry>Deprecated. Not used by any driver.</entry>
+ </row><row>
+ <entry>&fe-caps;</entry>
+ <entry>caps</entry>
+ <entry>Capabilities supported by the frontend</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </refsect1>
+
+ <para>NOTE: The frequencies are specified in Hz for Terrestrial and Cable
+ systems. They're specified in kHz for Satellite systems</para>
+
+<section id="fe-caps-t">
+<title>frontend capabilities</title>
+
+<para>Capabilities describe what a frontend can do. Some capabilities are
+ supported only on some specific frontend types.</para>
+
+<table pgwide="1" frame="none" id="fe-caps">
+ <title>enum fe_caps</title>
+ <tgroup cols="2">
+ &cs-def;
+ <thead>
+ <row>
+ <entry>ID</entry>
+ <entry>Description</entry>
+ </row>
+ </thead>
+ <tbody valign="top">
+ <row>
+ <entry><constant>FE_IS_STUPID</constant></entry>
+ <entry>There's something wrong at the frontend, and it can't
+ report its capabilities</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_INVERSION_AUTO</constant></entry>
+ <entry>The frontend is capable of auto-detecting inversion</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_1_2</constant></entry>
+ <entry>The frontend supports FEC 1/2</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_2_3</constant></entry>
+ <entry>The frontend supports FEC 2/3</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_3_4</constant></entry>
+ <entry>The frontend supports FEC 3/4</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_4_5</constant></entry>
+ <entry>The frontend supports FEC 4/5</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_5_6</constant></entry>
+ <entry>The frontend supports FEC 5/6</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_6_7</constant></entry>
+ <entry>The frontend supports FEC 6/7</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_7_8</constant></entry>
+ <entry>The frontend supports FEC 7/8</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_8_9</constant></entry>
+ <entry>The frontend supports FEC 8/9</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_FEC_AUTO</constant></entry>
+ <entry>The frontend can autodetect FEC.</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QPSK</constant></entry>
+ <entry>The frontend supports QPSK modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_16</constant></entry>
+ <entry>The frontend supports 16-QAM modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_32</constant></entry>
+ <entry>The frontend supports 32-QAM modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_64</constant></entry>
+ <entry>The frontend supports 64-QAM modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_128</constant></entry>
+ <entry>The frontend supports 128-QAM modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_256</constant></entry>
+ <entry>The frontend supports 256-QAM modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_QAM_AUTO</constant></entry>
+ <entry>The frontend can autodetect modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_TRANSMISSION_MODE_AUTO</constant></entry>
+ <entry>The frontend can autodetect the transmission mode</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_BANDWIDTH_AUTO</constant></entry>
+ <entry>The frontend can autodetect the bandwidth</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_GUARD_INTERVAL_AUTO</constant></entry>
+ <entry>The frontend can autodetect the guard interval</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_HIERARCHY_AUTO</constant></entry>
+ <entry>The frontend can autodetect hierarch</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_8VSB</constant></entry>
+ <entry>The frontend supports 8-VSB modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_16VSB</constant></entry>
+ <entry>The frontend supports 16-VSB modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_HAS_EXTENDED_CAPS</constant></entry>
+ <entry>Currently, unused</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_MULTISTREAM</constant></entry>
+ <entry>The frontend supports multistream filtering</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_TURBO_FEC</constant></entry>
+ <entry>The frontend supports turbo FEC modulation</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_2G_MODULATION</constant></entry>
+ <entry>The frontend supports "2nd generation modulation" (DVB-S2/T2)></entry>
+ </row>
+ <row>
+ <entry><constant>FE_NEEDS_BENDING</constant></entry>
+ <entry>Not supported anymore, don't use it</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_RECOVER</constant></entry>
+ <entry>The frontend can recover from a cable unplug automatically</entry>
+ </row>
+ <row>
+ <entry><constant>FE_CAN_MUTE_TS</constant></entry>
+ <entry>The frontend can stop spurious TS data output</entry>
+ </row>
+ </tbody>
+ </tgroup>
+</table>
</section>
+</refentry>
<section id="dvb-diseqc-master-cmd">
<title>diseqc master command</title>
</row></tbody></tgroup></informaltable>
</section>
-<section id="FE_GET_INFO">
-<title>FE_GET_INFO</title>
-<para>DESCRIPTION
-</para>
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para>This ioctl call returns information about the front-end. This call only requires
- read-only access to the device.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>SYNOPSIS
-</para>
-
-<informaltable><tgroup cols="1"><tbody><row><entry
- align="char">
-<para> int ioctl(int fd, int request = <link linkend="FE_GET_INFO">FE_GET_INFO</link>, struct
- dvb_frontend_info ⋆info);</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-<para>PARAMETERS
-</para>
-
-<informaltable><tgroup cols="2"><tbody><row><entry
- align="char">
-<para>int fd</para>
-</entry><entry
- align="char">
-<para>File descriptor returned by a previous call to open().</para>
-</entry>
- </row><row><entry
- align="char">
-<para>int request</para>
-</entry><entry
- align="char">
-<para>Equals <link linkend="FE_GET_INFO">FE_GET_INFO</link> for this command.</para>
-</entry>
- </row><row><entry
- align="char">
-<para>struct
- dvb_frontend_info
- *info</para>
-</entry><entry
- align="char">
-<para>Points to the location where the front-end information is
- to be stored.</para>
-</entry>
- </row></tbody></tgroup></informaltable>
-&return-value-dvb;
-</section>
<section id="FE_DISEQC_RESET_OVERLOAD">
<title>FE_DISEQC_RESET_OVERLOAD</title>
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff