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[media] DocBook: better document FE_SET_TONE ioctl

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Use the proper format for FE_SET_TONE documentation and
improve the documentation.

Keep the enum fe_sec_tone_mode description together with
the ioctl, as both are used together.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2015-05-27 07:15:50 -03:00
parent d6b6d346e5
commit 6dc59e7a19
3 changed files with 93 additions and 62 deletions
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88
Documentation/DocBook/media/dvb/fe-set-tone.xml Normal file
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@ -0,0 +1,88 @@
<refentry id="FE_SET_TONE">
<refmeta>
<refentrytitle>ioctl FE_SET_TONE</refentrytitle>
&manvol;
</refmeta>
<refnamediv>
<refname>FE_SET_TONE</refname>
<refpurpose>Sets/resets the generation of the continuous 22kHz tone.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcprototype>
<funcdef>int <function>ioctl</function></funcdef>
<paramdef>int <parameter>fd</parameter></paramdef>
<paramdef>int <parameter>request</parameter></paramdef>
<paramdef>&fe-sec-tone-mode; *<parameter>tone</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_TONE</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>pointer to &fe-sec-tone-mode;</parameter></term>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Description</title>
<para>This ioctl is used to set the generation of the continuous 22kHz tone.
This call requires read/write permissions.</para>
<para>Usually, satellital antenna subsystems require that the digital TV
device to send a 22kHz tone in order to select between high/low band on
some dual-band LNBf. It is also used to send signals to DiSEqC equipment,
but this is done using the DiSEqC ioctls.</para>
<para>NOTE: if more than one device is connected to the same antenna,
setting a tone may interfere on other devices, as they may lose
the capability of selecting the band. So, it is recommended that
applications would change to SEC_TONE_OFF when the device is not used.</para>
&return-value-dvb;
</refsect1>
<section id="fe-sec-tone-mode-t">
<title>enum fe_sec_voltage</title>
<table pgwide="1" frame="none" id="fe-sec-tone-mode">
<title>enum fe_sec_tone_mode</title>
<tgroup cols="2">
&cs-def;
<thead>
<row>
<entry>ID</entry>
<entry>Description</entry>
</row>
</thead>
<tbody valign="top">
<row>
<entry align="char">SEC_TONE_ON</entry>
<entry align="char">Sends a 22kHz tone burst to the antenna</entry>
</row><row>
<entry align="char">SEC_TONE_OFF</entry>
<entry align="char">Don't send a 22kHz tone to the antenna
(except if the FE_DISEQC_* ioctls are called)</entry>
</row>
</tbody>
</tgroup>
</table>
</section>
</refentry>

61
Documentation/DocBook/media/dvb/frontend.xml
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@ -75,21 +75,6 @@ specification is available at
</programlisting>
</section>
<section id="fe-sec-tone-mode-t">
<title>SEC continuous tone</title>
<para>The continuous 22KHz tone is usually used with non-DiSEqC capable LNBs to switch the
high/low band of a dual-band LNB. When using DiSEqC epuipment this voltage has to
be switched consistently to the DiSEqC commands as described in the DiSEqC
spec.</para>
<programlisting>
typedef enum fe_sec_tone_mode {
SEC_TONE_ON,
SEC_TONE_OFF
} fe_sec_tone_mode_t;
</programlisting>
</section>
<section id="fe-sec-mini-cmd-t">
<title>SEC tone burst</title>
@ -582,52 +567,8 @@ typedef enum fe_hierarchy {
&return-value-dvb;
</section>
<section id="FE_SET_TONE">
<title>FE_SET_TONE</title>
<para>DESCRIPTION
</para>
<informaltable><tgroup cols="1"><tbody><row><entry
align="char">
<para>This call is used to set the generation of the continuous 22kHz tone. This call
requires read/write permissions.</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_SET_TONE">FE_SET_TONE</link>,
fe_sec_tone_mode_t tone);</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_SET_TONE">FE_SET_TONE</link> for this command.</para>
</entry>
</row><row><entry
align="char">
<para>fe_sec_tone_mode_t
tone</para>
</entry><entry
align="char">
<para>The requested tone generation mode (on/off).</para>
</entry>
</row></tbody></tgroup></informaltable>
&return-value-dvb;
</section>
&sub-fe-set-tone;
&sub-fe-set-voltage;
&sub-fe-enable-high-lnb-voltage;
&sub-fe-set-frontend-tune-mode;

6
include/uapi/linux/dvb/frontend.h
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@ -114,10 +114,12 @@ enum fe_sec_voltage {
typedef enum fe_sec_voltage fe_sec_voltage_t;
typedef enum fe_sec_tone_mode {
enum fe_sec_tone_mode {
SEC_TONE_ON,
SEC_TONE_OFF
} fe_sec_tone_mode_t;
};
typedef enum fe_sec_tone_mode fe_sec_tone_mode_t;
typedef enum fe_sec_mini_cmd {