New field buffersize was added to inform application maximum
buffer size used. Add it to documentation too.
Cc: Hans Verkuil <hverk...@xs4all.nl>
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
Documentation/DocBook/media/v4l/dev-sdr.xml | 18 ++++++++++++++----
1 file changed, 14 insertions(+), 4 deletions(-)
diff --git a/Documentation/DocBook/media/v4l/dev-sdr.xml
b/Documentation/DocBook/media/v4l/dev-sdr.xml
index dc14804..f890356 100644
--- a/Documentation/DocBook/media/v4l/dev-sdr.xml
+++ b/Documentation/DocBook/media/v4l/dev-sdr.xml
@@ -72,9 +72,12 @@ To use the <link linkend="format">format</link> ioctls
applications set the
<constant>V4L2_BUF_TYPE_SDR_CAPTURE</constant> and use the &v4l2-sdr-format;
<structfield>sdr</structfield> member of the <structfield>fmt</structfield>
union as needed per the desired operation.
-Currently only the <structfield>pixelformat</structfield> field of
-&v4l2-sdr-format; is used. The content of that field is the V4L2 fourcc code
-of the data format.
+Currently there is two fields, <structfield>pixelformat</structfield> and
+<structfield>buffersize</structfield>, of struct &v4l2-sdr-format; which are
+used. Content of the <structfield>pixelformat</structfield> is V4L2 FourCC
+code of the data format. The <structfield>buffersize</structfield> field is
+maximum buffer size in bytes required for data transfer, set by the driver in
+order to inform application.
</para>
<table pgwide="1" frame="none" id="v4l2-sdr-format">
@@ -92,8 +95,15 @@ V4L2 defines SDR formats in <xref linkend="sdr-formats" />.
</entry>
</row>
<row>
+ <entry>__u32</entry>
+ <entry><structfield>buffersize</structfield></entry>
+ <entry>
+Maximum size in bytes required for data. Value is set by the driver.
+ </entry>
+ </row>
+ <row>
<entry>__u8</entry>
- <entry><structfield>reserved[28]</structfield></entry>
+ <entry><structfield>reserved[24]</structfield></entry>
<entry>This array is reserved for future extensions.
Drivers and applications must set it to zero.</entry>
</row>
--
1.9.3
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