[media] V4L: Add JPEG compression control class documentation

Add DocBook entries for the JPEG control class.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml
index 01ea24b8438..48748499c09 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-jpegcomp.xml
@@ -57,6 +57,11 @@
   <refsect1>
     <title>Description</title>
 
+    <para>These ioctls are <emphasis role="bold">deprecated</emphasis>.
+    New drivers and applications should use <link linkend="jpeg-controls">
+    JPEG class controls</link> for image quality and JPEG markers control.
+    </para>
+
     <para>[to do]</para>
 
     <para>Ronald Bultje elaborates:</para>
@@ -86,7 +91,10 @@ to add them.</para>
           <row>
             <entry>int</entry>
             <entry><structfield>quality</structfield></entry>
-            <entry></entry>
+            <entry>Deprecated. If <link linkend="jpeg-quality-control"><constant>
+            V4L2_CID_JPEG_IMAGE_QUALITY</constant></link> control is exposed by
+            a driver applications should use it instead and ignore this field.
+            </entry>
           </row>
           <row>
             <entry>int</entry>
@@ -116,7 +124,11 @@ to add them.</para>
           <row>
             <entry>__u32</entry>
             <entry><structfield>jpeg_markers</structfield></entry>
-            <entry>See <xref linkend="jpeg-markers" />.</entry>
+            <entry>See <xref linkend="jpeg-markers"/>. Deprecated.
+            If <link linkend="jpeg-active-marker-control"><constant>
+            V4L2_CID_JPEG_ACTIVE_MARKER</constant></link> control
+            is exposed by a driver applications should use it instead
+            and ignore this field.</entry>
           </row>
         </tbody>
       </tgroup>