[RFC/PATCH] v4l: Add V4L2_MBUS_FMT_JPEG_1X8 media bus format

Commit Message

Sylwester Nawrocki/Kernel \(PLT\) /SRPOL/Staff Engineer/Samsung Electronics March 24, 2011, 2:19 p.m. UTC

None

Patch

diff --git a/Documentation/DocBook/v4l/subdev-formats.xml b/Documentation/DocBook/v4l/subdev-formats.xml
index b5376e2..60a6fe2 100644
--- a/Documentation/DocBook/v4l/subdev-formats.xml
+++ b/Documentation/DocBook/v4l/subdev-formats.xml
@@ -2463,5 +2463,50 @@ 
 	</tgroup>
       </table>
     </section>
+
+    <section>
+      <title>JPEG Compressed Formats</title>
+
+      <para>Those data formats are used to transfer arbitrary byte-based image
+	data obtained from JPEG compression process. The format code
+	is made of the following information.
+	<itemizedlist>
+	  <listitem>The bus width in bits.</listitem>
+	</itemizedlist>
+
+	<para>For instance, a format where bus width is 8 bits will be named
+	  <constant>V4L2_MBUS_FMT_JPEG_1X8</constant>.
+	</para>
+
+      </para>
+
+      <para>The following table lists existing JPEG compressed formats.</para>
+
+      <table pgwide="0" frame="none" id="v4l2-mbus-pixelcode-jpeg">
+	<title>JPEG Formats</title>
+	<tgroup cols="23">
+	  <colspec colname="id" align="left" />
+	  <colspec colname="code" align="left"/>
+	  <colspec colname="remarks" align="left"/>
+	  <thead>
+	    <row>
+	      <entry>Identifier</entry>
+	      <entry>Code</entry>
+	      <entry>Remarks</entry>
+	    </row>
+	  </thead>
+	  <tbody valign="top">
+	    <row id="V4L2-MBUS-FMT-JPEG-1X8">
+	      <entry>V4L2_MBUS_FMT_JPEG_1X8</entry>
+	      <entry>0x4001</entry>
+	      <entry> This format shall be used for of transmission of JPEG
+		data over MIPI CSI-2 bus with User Defined 8-bit Data types.
+	      </entry>
+	    </row>
+
+	  </tbody>
+	</tgroup>
+      </table>
+    </section>
   </section>
 </section>
diff --git a/include/linux/v4l2-mediabus.h b/include/linux/v4l2-mediabus.h
index 7054a7a..15d6cda 100644
--- a/include/linux/v4l2-mediabus.h
+++ b/include/linux/v4l2-mediabus.h
@@ -86,6 +86,9 @@  enum v4l2_mbus_pixelcode {
 	V4L2_MBUS_FMT_SGBRG12_1X12 = 0x3010,
 	V4L2_MBUS_FMT_SGRBG12_1X12 = 0x3011,
 	V4L2_MBUS_FMT_SRGGB12_1X12 = 0x3012,
+
+	/* JPEG compressed formats - next is 0x4002 */
+	V4L2_MBUS_FMT_JPEG_1X8 = 0x4001,
 };
 
 /**