From 12c78e665f96b3f73dc0b6a6190a4871fe526293 Mon Sep 17 00:00:00 2001
From: Hans Verkuil <hans.verkuil@cisco.com>
Date: Fri, 18 Jul 2014 02:58:42 -0300
Subject: [media] DocBook media: document new VBI defines

Add defines for the start line numbers of each field for both
525 and 625 line formats.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---
 Documentation/DocBook/media/v4l/dev-sliced-vbi.xml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'Documentation/DocBook/media/v4l/dev-sliced-vbi.xml')

diff --git a/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
index 548f8ea28dee..7a8bf3011ee9 100644
--- a/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
+++ b/Documentation/DocBook/media/v4l/dev-sliced-vbi.xml
@@ -185,7 +185,14 @@ tables, sigh. --></para></entry>
 	    <entry></entry>
 	    <entry spanname="hspan">Drivers must set
 <structfield>service_lines</structfield>[0][0] and
-<structfield>service_lines</structfield>[1][0] to zero.</entry>
+<structfield>service_lines</structfield>[1][0] to zero.
+The <constant>V4L2_VBI_ITU_525_F1_START</constant>,
+<constant>V4L2_VBI_ITU_525_F2_START</constant>,
+<constant>V4L2_VBI_ITU_625_F1_START</constant> and
+<constant>V4L2_VBI_ITU_625_F2_START</constant> defines give the start
+line numbers for each field for each 525 or 625 line format as a
+convenience.  Don't forget that ITU line numbering starts at 1, not 0.
+</entry>
 	  </row>
 	  <row>
 	    <entry>__u32</entry>
-- 
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