[media] Add Y10B, a 10 bpp bit-packed greyscale format

Add a 10 bits per pixel greyscale format in a bit-packed array representation,
naming it Y10B. Such pixel format is supplied for instance by the Kinect
sensor device.

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/DocBook/v4l/pixfmt-y10b.xml b/Documentation/DocBook/v4l/pixfmt-y10b.xml
new file mode 100644
index 0000000..adb0ad8
--- /dev/null
+++ b/Documentation/DocBook/v4l/pixfmt-y10b.xml
@@ -0,0 +1,43 @@
+<refentry id="V4L2-PIX-FMT-Y10BPACK">
+  <refmeta>
+    <refentrytitle>V4L2_PIX_FMT_Y10BPACK ('Y10B')</refentrytitle>
+    &manvol;
+  </refmeta>
+  <refnamediv>
+    <refname><constant>V4L2_PIX_FMT_Y10BPACK</constant></refname>
+    <refpurpose>Grey-scale image as a bit-packed array</refpurpose>
+  </refnamediv>
+  <refsect1>
+    <title>Description</title>
+
+    <para>This is a packed grey-scale image format with a depth of 10 bits per
+      pixel. Pixels are stored in a bit-packed array of 10bit bits per pixel,
+      with no padding between them and with the most significant bits coming
+      first from the left.</para>
+
+    <example>
+      <title><constant>V4L2_PIX_FMT_Y10BPACK</constant> 4 pixel data stream taking 5 bytes</title>
+
+      <formalpara>
+	<title>Bit-packed representation</title>
+	<para>pixels cross the byte boundary and have a ratio of 5 bytes for each 4
+          pixels.
+	  <informaltable frame="all">
+	    <tgroup cols="5" align="center">
+	      <colspec align="left" colwidth="2*" />
+	      <tbody valign="top">
+		<row>
+		  <entry>Y'<subscript>00[9:2]</subscript></entry>
+		  <entry>Y'<subscript>00[1:0]</subscript>Y'<subscript>01[9:4]</subscript></entry>
+		  <entry>Y'<subscript>01[3:0]</subscript>Y'<subscript>02[9:6]</subscript></entry>
+		  <entry>Y'<subscript>02[5:0]</subscript>Y'<subscript>03[9:8]</subscript></entry>
+		  <entry>Y'<subscript>03[7:0]</subscript></entry>
+		</row>
+	      </tbody>
+	    </tgroup>
+	  </informaltable>
+	</para>
+      </formalpara>
+    </example>
+  </refsect1>
+</refentry>