[media] DocBook: better document FE_SET_VOLTAGE ioctl
Use the proper format for FE_SET_VOLTAGE documentation and fix the documentation. The description for the enum is not 100%, and it is missing the voltage off value. Also, it is better to keep the enum description together with the ioctl, as both are used together. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>hifive-unleashed-5.1
Mauro Carvalho Chehab
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<refentry id="FE_SET_VOLTAGE">
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<refmeta>
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<refentrytitle>ioctl FE_SET_VOLTAGE</refentrytitle>
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&manvol;
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</refmeta>
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<refnamediv>
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<refname>FE_SET_VOLTAGE</refname>
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<refpurpose>Allow setting the DC level sent to the antenna subsystem.</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcprototype>
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<funcdef>int <function>ioctl</function></funcdef>
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<paramdef>int <parameter>fd</parameter></paramdef>
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<paramdef>int <parameter>request</parameter></paramdef>
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<paramdef>&fe-sec-voltage; *<parameter>voltage</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Arguments</title>
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<variablelist>
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<varlistentry>
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<term><parameter>fd</parameter></term>
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<listitem>
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<para>&fe_fd;</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>request</parameter></term>
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<listitem>
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<para>FE_SET_VOLTAGE</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>pointer to &fe-sec-voltage;</parameter></term>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Description</title>
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<para>This ioctl allows to set the DC voltage level sent through the antenna
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cable to 13V, 18V or off.</para>
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<para>Usually, a satellital antenna subsystems require that the digital TV
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device to send a DC voltage to feed power to the LNBf. Depending on the
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LNBf type, the polarization or the intermediate frequency (IF) of the LNBf
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can controlled by the voltage level. Other devices (for example, the ones
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that implement DISEqC and multipoint LNBf's don't need to control the
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voltage level, provided that either 13V or 18V is sent to power up the
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LNBf.</para>
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<para>NOTE: if more than one device is connected to the same antenna,
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setting a voltage level may interfere on other devices, as they may lose
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the capability of setting polarization or IF. So, on those
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cases, setting the voltage to SEC_VOLTAGE_OFF while the device is not is
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used is recommended.</para>
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&return-value-dvb;
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</refsect1>
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<section id="fe-sec-voltage-t">
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<title>enum fe_sec_voltage</title>
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<table pgwide="1" frame="none" id="fe-sec-voltage">
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<title>enum fe_status</title>
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<tgroup cols="2">
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&cs-def;
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<thead>
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<row>
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<entry>ID</entry>
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<entry>Description</entry>
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</row>
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</thead>
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<tbody valign="top">
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<row>
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<entry align="char">SEC_VOLTAGE_13</entry>
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<entry align="char">Set DC voltage level to 13V</entry>
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</row><row>
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<entry align="char">SEC_VOLTAGE_18</entry>
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<entry align="char">Set DC voltage level to 18V</entry>
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</row><row>
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<entry align="char">SEC_VOLTAGE_OFF</entry>
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<entry align="char">Don't send any voltage to the antenna</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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</section>
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</refentry>
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@ -75,19 +75,6 @@ specification is available at
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</programlisting>
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</section>
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<section id="fe-sec-voltage-t">
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<title>diseqc slave reply</title>
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<para>The voltage is usually used with non-DiSEqC capable LNBs to switch the polarzation
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(horizontal/vertical). When using DiSEqC epuipment this voltage has to be switched
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consistently to the DiSEqC commands as described in the DiSEqC spec.</para>
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<programlisting>
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typedef enum fe_sec_voltage {
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SEC_VOLTAGE_13,
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SEC_VOLTAGE_18
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} fe_sec_voltage_t;
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</programlisting>
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</section>
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<section id="fe-sec-tone-mode-t">
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<title>SEC continuous tone</title>
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@ -641,54 +628,7 @@ typedef enum fe_hierarchy {
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&return-value-dvb;
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</section>
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<section id="FE_SET_VOLTAGE">
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<title>FE_SET_VOLTAGE</title>
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<para>DESCRIPTION
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</para>
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<informaltable><tgroup cols="1"><tbody><row><entry
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align="char">
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<para>This call is used to set the bus voltage. This call requires read/write
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permissions.</para>
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</entry>
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</row></tbody></tgroup></informaltable>
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<para>SYNOPSIS
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</para>
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<informaltable><tgroup cols="1"><tbody><row><entry
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align="char">
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<para>int ioctl(int fd, int request = <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link>,
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fe_sec_voltage_t voltage);</para>
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</entry>
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</row></tbody></tgroup></informaltable>
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<para>PARAMETERS
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</para>
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<informaltable><tgroup cols="2"><tbody><row><entry
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align="char">
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<para>int fd</para>
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</entry><entry
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align="char">
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<para>File descriptor returned by a previous call to open().</para>
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</entry>
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</row><row><entry
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align="char">
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<para>int request</para>
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</entry><entry
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align="char">
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<para>Equals <link linkend="FE_SET_VOLTAGE">FE_SET_VOLTAGE</link> for this command.</para>
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</entry>
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</row><row><entry
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align="char">
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<para>fe_sec_voltage_t
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voltage</para>
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</entry><entry
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align="char">
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<para>The requested bus voltage.</para>
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</entry>
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</row></tbody></tgroup></informaltable>
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&return-value-dvb;
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</section>
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&sub-fe-set-voltage;
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&sub-fe-enable-high-lnb-voltage;
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&sub-fe-set-frontend-tune-mode;
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@ -105,11 +105,13 @@ struct dvb_diseqc_slave_reply {
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}; /* errorcode when no message was received */
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typedef enum fe_sec_voltage {
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enum fe_sec_voltage {
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SEC_VOLTAGE_13,
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SEC_VOLTAGE_18,
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SEC_VOLTAGE_OFF
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} fe_sec_voltage_t;
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};
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typedef enum fe_sec_voltage fe_sec_voltage_t;
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typedef enum fe_sec_tone_mode {
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