[PATCH] LED control

[Jean-Francois Moine <moinejf@free.fr>]

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Some webcams have one or many lights (LED). This patch makes them
controlable by the applications.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>

-- 
Ken ar c'hentañ	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

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diff -r 1248509d8bed linux/include/linux/videodev2.h
--- a/linux/include/linux/videodev2.h	Sat Mar 14 08:44:42 2009 +0100
+++ b/linux/include/linux/videodev2.h	Sat Mar 14 12:53:00 2009 +0100
@@ -887,9 +887,10 @@
 	V4L2_COLORFX_BW		= 1,
 	V4L2_COLORFX_SEPIA	= 2,
 };
+#define V4L2_CID_LEDS				(V4L2_CID_BASE+32)
 
 /* last CID + 1 */
-#define V4L2_CID_LASTP1                         (V4L2_CID_BASE+32)
+#define V4L2_CID_LASTP1				(V4L2_CID_BASE+33)
 
 /*  MPEG-class control IDs defined by V4L2 */
 #define V4L2_CID_MPEG_BASE 			(V4L2_CTRL_CLASS_MPEG | 0x900)
diff -r 1248509d8bed v4l2-spec/controls.sgml
--- a/v4l2-spec/controls.sgml	Sat Mar 14 08:44:42 2009 +0100
+++ b/v4l2-spec/controls.sgml	Sat Mar 14 12:53:00 2009 +0100
@@ -281,6 +281,13 @@
 <constant>V4L2_COLORFX_SEPIA</constant> (2).</entry>
 	  </row>
 	  <row>
+	    <entry><constant>V4L2_CID_LEDS</constant></entry>
+	    <entry>integer</entry>
+	    <entry>Switch on or off the LEDs or illuminators of the device.
+In the control value, each LED may be coded in one bit (0: off, 1: on) or in
+many bits (light intensity).</entry>
+	  </row>
+	  <row>
 	    <entry><constant>V4L2_CID_LASTP1</constant></entry>
 	    <entry></entry>
 	    <entry>End of the predefined control IDs (currently