[media] v4l: Add 12 bits bayer pixel formats

Add FCCs for the following pixel formats:

- V4L2_PIX_FMT_SBGGR12
- V4L2_PIX_FMT_SGBRG12
- V4L2_PIX_FMT_SGRBG12
- V4L2_PIX_FMT_SRGGB12

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/Documentation/DocBook/v4l/pixfmt-srggb12.xml b/Documentation/DocBook/v4l/pixfmt-srggb12.xml
new file mode 100644 (file)
index 0000000..9ba4fb6
--- /dev/null
+++ b/Documentation/DocBook/v4l/pixfmt-srggb12.xml
@@ -0,0 +1,90 @@
+    <refentry>
+      <refmeta>
+       <refentrytitle>V4L2_PIX_FMT_SRGGB12 ('RG12'),
+        V4L2_PIX_FMT_SGRBG12 ('BA12'),
+        V4L2_PIX_FMT_SGBRG12 ('GB12'),
+        V4L2_PIX_FMT_SBGGR12 ('BG12'),
+        </refentrytitle>
+       &manvol;
+      </refmeta>
+      <refnamediv>
+       <refname id="V4L2-PIX-FMT-SRGGB12"><constant>V4L2_PIX_FMT_SRGGB12</constant></refname>
+       <refname id="V4L2-PIX-FMT-SGRBG12"><constant>V4L2_PIX_FMT_SGRBG12</constant></refname>
+       <refname id="V4L2-PIX-FMT-SGBRG12"><constant>V4L2_PIX_FMT_SGBRG12</constant></refname>
+       <refname id="V4L2-PIX-FMT-SBGGR12"><constant>V4L2_PIX_FMT_SBGGR12</constant></refname>
+       <refpurpose>12-bit Bayer formats expanded to 16 bits</refpurpose>
+      </refnamediv>
+      <refsect1>
+       <title>Description</title>
+
+       <para>The following four pixel formats are raw sRGB / Bayer formats with
+12 bits per colour. Each colour component is stored in a 16-bit word, with 6
+unused high bits filled with zeros. Each n-pixel row contains n/2 green samples
+and n/2 blue or red samples, with alternating red and blue rows. Bytes are
+stored in memory in little endian order. They are conventionally described
+as GRGR... BGBG..., RGRG... GBGB..., etc. Below is an example of one of these
+formats</para>
+
+    <example>
+      <title><constant>V4L2_PIX_FMT_SBGGR12</constant> 4 &times; 4
+pixel image</title>
+
+      <formalpara>
+       <title>Byte Order.</title>
+       <para>Each cell is one byte, high 6 bits in high bytes are 0.
+         <informaltable frame="none">
+           <tgroup cols="5" align="center">
+             <colspec align="left" colwidth="2*" />
+             <tbody valign="top">
+               <row>
+                 <entry>start&nbsp;+&nbsp;0:</entry>
+                 <entry>B<subscript>00low</subscript></entry>
+                 <entry>B<subscript>00high</subscript></entry>
+                 <entry>G<subscript>01low</subscript></entry>
+                 <entry>G<subscript>01high</subscript></entry>
+                 <entry>B<subscript>02low</subscript></entry>
+                 <entry>B<subscript>02high</subscript></entry>
+                 <entry>G<subscript>03low</subscript></entry>
+                 <entry>G<subscript>03high</subscript></entry>
+               </row>
+               <row>
+                 <entry>start&nbsp;+&nbsp;8:</entry>
+                 <entry>G<subscript>10low</subscript></entry>
+                 <entry>G<subscript>10high</subscript></entry>
+                 <entry>R<subscript>11low</subscript></entry>
+                 <entry>R<subscript>11high</subscript></entry>
+                 <entry>G<subscript>12low</subscript></entry>
+                 <entry>G<subscript>12high</subscript></entry>
+                 <entry>R<subscript>13low</subscript></entry>
+                 <entry>R<subscript>13high</subscript></entry>
+               </row>
+               <row>
+                 <entry>start&nbsp;+&nbsp;16:</entry>
+                 <entry>B<subscript>20low</subscript></entry>
+                 <entry>B<subscript>20high</subscript></entry>
+                 <entry>G<subscript>21low</subscript></entry>
+                 <entry>G<subscript>21high</subscript></entry>
+                 <entry>B<subscript>22low</subscript></entry>
+                 <entry>B<subscript>22high</subscript></entry>
+                 <entry>G<subscript>23low</subscript></entry>
+                 <entry>G<subscript>23high</subscript></entry>
+               </row>
+               <row>
+                 <entry>start&nbsp;+&nbsp;24:</entry>
+                 <entry>G<subscript>30low</subscript></entry>
+                 <entry>G<subscript>30high</subscript></entry>
+                 <entry>R<subscript>31low</subscript></entry>
+                 <entry>R<subscript>31high</subscript></entry>
+                 <entry>G<subscript>32low</subscript></entry>
+                 <entry>G<subscript>32high</subscript></entry>
+                 <entry>R<subscript>33low</subscript></entry>
+                 <entry>R<subscript>33high</subscript></entry>
+               </row>
+             </tbody>
+           </tgroup>
+         </informaltable>
+       </para>
+      </formalpara>
+    </example>
+  </refsect1>
+</refentry>

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index a94c4d5..8c80fd3 100644 (file)
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -355,6 +355,10 @@ struct v4l2_pix_format {
 #define V4L2_PIX_FMT_SGBRG10 v4l2_fourcc('G', 'B', '1', '0') /* 10  GBGB.. RGRG.. */
 #define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0') /* 10  GRGR.. BGBG.. */
 #define V4L2_PIX_FMT_SRGGB10 v4l2_fourcc('R', 'G', '1', '0') /* 10  RGRG.. GBGB.. */
+#define V4L2_PIX_FMT_SBGGR12 v4l2_fourcc('B', 'G', '1', '2') /* 12  BGBG.. GRGR.. */
+#define V4L2_PIX_FMT_SGBRG12 v4l2_fourcc('G', 'B', '1', '2') /* 12  GBGB.. RGRG.. */
+#define V4L2_PIX_FMT_SGRBG12 v4l2_fourcc('B', 'A', '1', '2') /* 12  GRGR.. BGBG.. */
+#define V4L2_PIX_FMT_SRGGB12 v4l2_fourcc('R', 'G', '1', '2') /* 12  RGRG.. GBGB.. */
        /* 10bit raw bayer DPCM compressed to 8 bits */
 #define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
        /*