V4L/DVB: Documentation: update now that the vtx/videotext API has been removed

Remove all references to /dev/vtx in the documentation, except for
some historical comments in dev-teletext.xml.

Documentation/devices.txt is not updated, this will go through Alan Cox
who maintains this file.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/Documentation/DocBook/v4l/compat.xml b/Documentation/DocBook/v4l/compat.xml
index 54447f0d0784..c9ce61d981f5 100644
--- a/Documentation/DocBook/v4l/compat.xml
+++ b/Documentation/DocBook/v4l/compat.xml
@@ -21,11 +21,15 @@ API.</para>
       <title>Opening and Closing Devices</title>
 
       <para>For compatibility reasons the character device file names
-recommended for V4L2 video capture, overlay, radio, teletext and raw
+recommended for V4L2 video capture, overlay, radio and raw
 vbi capture devices did not change from those used by V4L. They are
 listed in <xref linkend="devices" /> and below in <xref
 	  linkend="v4l-dev" />.</para>
 
+      <para>The teletext devices (minor range 192-223) have been removed in
+V4L2 and no longer exist. There is no hardware available anymore for handling
+pure teletext. Instead raw or sliced VBI is used.</para>
+
       <para>The V4L <filename>videodev</filename> module automatically
 assigns minor numbers to drivers in load order, depending on the
 registered device type. We recommend that V4L2 drivers by default
@@ -66,13 +70,6 @@ not compatible with V4L or V4L2.</para> </footnote>,
 	      <entry>64-127</entry>
 	    </row>
 	    <row>
-	      <entry>Teletext decoder</entry>
-	      <entry><para><filename>/dev/vtx</filename>,
-<filename>/dev/vtx0</filename> to
-<filename>/dev/vtx31</filename></para></entry>
-	      <entry>192-223</entry>
-	    </row>
-	    <row>
 	      <entry>Raw VBI capture</entry>
 	      <entry><para><filename>/dev/vbi</filename>,
 <filename>/dev/vbi0</filename> to
@@ -2345,6 +2342,17 @@ more information.</para>
 	</listitem>
       </orderedlist>
     </section>
+    <section>
+      <title>V4L2 in Linux 2.6.37</title>
+      <orderedlist>
+	<listitem>
+	  <para>Remove the vtx (videotext/teletext) API. This API was no longer
+used and no hardware exists to verify the API. Nor were any userspace applications found
+that used it. It was originally scheduled for removal in 2.6.35.
+	  </para>
+	</listitem>
+      </orderedlist>
+    </section>
 
     <section id="other">
       <title>Relation of V4L2 to other Linux multimedia APIs</title>