[media] DVB: Docbook update for DTV_ENUM_DELSYS
Signed-off-by: Manu Abraham <abraham.manu@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/DocBook/media/dvb/dvbproperty.xml b/Documentation/DocBook/media/dvb/dvbproperty.xml
index 6ac8039..b812e31 100644
--- a/Documentation/DocBook/media/dvb/dvbproperty.xml
+++ b/Documentation/DocBook/media/dvb/dvbproperty.xml
@@ -649,6 +649,18 @@
many data types via a single multiplex. The API will soon support this
at which point this section will be expanded.</para>
</section>
+ <section id="DTV_ENUM_DELSYS">
+ <title><constant>DTV_ENUM_DELSYS</constant></title>
+ <para>A Multi standard frontend needs to advertise the delivery systems provided.
+ Applications need to enumerate the provided delivery systems, before using
+ any other operation with the frontend. Prior to it's introduction,
+ FE_GET_INFO was used to determine a frontend type. A frontend which
+ provides more than a single delivery system, FE_GET_INFO doesn't help much.
+ Applications which intends to use a multistandard frontend must enumerate
+ the delivery systems associated with it, rather than trying to use
+ FE_GET_INFO. In the case of a legacy frontend, the result is just the same
+ as with FE_GET_INFO, but in a more structured format </para>
+ </section>
</section>
<section id="frontend-property-terrestrial-systems">
<title>Properties used on terrestrial delivery systems</title>