[media] DocBook: improve documentation for DVB spectral inversion

Format it as a table and provide more details.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index d9861b5..4108553 100644 (file)
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -238,19 +238,45 @@ get/set up to 64 properties. The actual meaning of each property is described on
        </section>
        <section id="DTV-INVERSION">
        <title><constant>DTV_INVERSION</constant></title>
-       <para>The Inversion field can take one of these values:
-       </para>
-       <programlisting>
-       typedef enum fe_spectral_inversion {
-               INVERSION_OFF,
-               INVERSION_ON,
-               INVERSION_AUTO
-       } fe_spectral_inversion_t;
-       </programlisting>
-       <para>It indicates if spectral inversion should be presumed or not. In the automatic setting
-       (<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
-       itself.
-       </para>
+
+       <para>Specifies if the frontend should do spectral inversion or not.</para>
+
+<section id="fe-spectral-inversion-t">
+<title>enum fe_modulation: Frontend spectral inversion</title>
+
+<para>This parameter indicates if spectral inversion should be presumed or not.
+    In the automatic setting (<constant>INVERSION_AUTO</constant>) the hardware
+    will try to figure out the correct setting by itself. If the hardware
+    doesn't support, the DVB core will try to lock at the carrier first with
+    inversion off. If it fails, it will try to enable inversion.
+</para>
+
+<table pgwide="1" frame="none" id="fe-spectral-inversion">
+    <title>enum fe_modulation</title>
+    <tgroup cols="2">
+       &cs-def;
+       <thead>
+       <row>
+           <entry>ID</entry>
+           <entry>Description</entry>
+       </row>
+       </thead>
+       <tbody valign="top">
+       <row>
+           <entry>INVERSION_OFF</entry>
+           <entry>Don't do spectral band inversion.</entry>
+       </row><row>
+           <entry>INVERSION_ON</entry>
+           <entry>Do spectral band inversion.</entry>
+       </row><row>
+           <entry>INVERSION_AUTO</entry>
+           <entry>Autodetect spectral band inversion.</entry>
+       </row>
+        </tbody>
+    </tgroup>
+</table>
+</section>
+
        </section>
        <section id="DTV-DISEQC-MASTER">
        <title><constant>DTV_DISEQC_MASTER</constant></title>

diff --git a/Documentation/DocBook/media/dvb/frontend.xml b/Documentation/DocBook/media/dvb/frontend.xml
index 07c1284..77dd88c 100644 (file)
--- a/Documentation/DocBook/media/dvb/frontend.xml
+++ b/Documentation/DocBook/media/dvb/frontend.xml
@@ -56,23 +56,6 @@ specification is available at
 
 &sub-dvbproperty;
 
-<section id="fe-spectral-inversion-t">
-<title>frontend spectral inversion</title>
-<para>The Inversion field can take one of these values:
-</para>
-<programlisting>
-typedef enum fe_spectral_inversion {
-       INVERSION_OFF,
-       INVERSION_ON,
-       INVERSION_AUTO
-} fe_spectral_inversion_t;
-</programlisting>
-<para>It indicates if spectral inversion should be presumed or not. In the automatic setting
-(<constant>INVERSION_AUTO</constant>) the hardware will try to figure out the correct setting by
-itself.
-</para>
-</section>
-
 <section id="fe-code-rate-t">
 <title>frontend code rate</title>
 <para>The possible values for the <constant>fec_inner</constant> field used on

diff --git a/Documentation/DocBook/media/dvb/frontend_legacy_api.xml b/Documentation/DocBook/media/dvb/frontend_legacy_api.xml
index 7d58238..fe1117e 100644 (file)
--- a/Documentation/DocBook/media/dvb/frontend_legacy_api.xml
+++ b/Documentation/DocBook/media/dvb/frontend_legacy_api.xml
@@ -82,7 +82,7 @@ DVB-C2, ISDB, etc.</para>
 struct dvb_frontend_parameters {
        uint32_t frequency;     /&#x22C6; (absolute) frequency in Hz for QAM/OFDM &#x22C6;/
                                /&#x22C6; intermediate frequency in kHz for QPSK &#x22C6;/
-       fe_spectral_inversion_t inversion;
+       &fe-spectral-inversion-t; inversion;
        union {
                struct dvb_qpsk_parameters qpsk;
                struct dvb_qam_parameters  qam;

diff --git a/include/uapi/linux/dvb/frontend.h b/include/uapi/linux/dvb/frontend.h
index d4b1718..2239055 100644 (file)
--- a/include/uapi/linux/dvb/frontend.h
+++ b/include/uapi/linux/dvb/frontend.h
@@ -154,12 +154,13 @@ enum fe_status {
 
 typedef enum fe_status fe_status_t;
 
-typedef enum fe_spectral_inversion {
+enum fe_spectral_inversion {
        INVERSION_OFF,
        INVERSION_ON,
        INVERSION_AUTO
-} fe_spectral_inversion_t;
+};
 
+typedef enum fe_spectral_inversion fe_spectral_inversion_t;
 
 typedef enum fe_code_rate {
        FEC_NONE = 0,