[media] mt9p031: Aptina (Micron) MT9P031 5MP sensor driver

The MT9P031 is a parallel 12-bit 5MP sensor from Aptina (formerly
Micron) controlled through I2C.

The driver creates a V4L2 subdevice. It currently supports skipping,
cropping, automatic binning, and gain, exposure, h/v flip and test
pattern controls.
Signed-off-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/Kconfig

@@ -467,6 +467,13 @@ config VIDEO_OV7670
 	  OV7670 VGA camera.  It currently only works with the M88ALP01
 	  controller.
 
+config VIDEO_MT9P031
+	tristate "Aptina MT9P031 support"
+	depends on I2C && VIDEO_V4L2
+	---help---
+	  This is a Video4Linux2 sensor-level driver for the Aptina
+	  (Micron) mt9p031 5 Mpixel camera.
+
 config VIDEO_MT9V011
 	tristate "Micron mt9v011 sensor support"
 	depends on I2C && VIDEO_V4L2

drivers/media/video/Makefile

@@ -65,6 +65,7 @@ obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
 obj-$(CONFIG_VIDEO_OV7670) 	+= ov7670.o
 obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
 obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
+obj-$(CONFIG_VIDEO_MT9P031) += mt9p031.o
 obj-$(CONFIG_VIDEO_MT9V011) += mt9v011.o
 obj-$(CONFIG_VIDEO_MT9V032) += mt9v032.o
 obj-$(CONFIG_VIDEO_SR030PC30)	+= sr030pc30.o

include/media/mt9p031.h

+#ifndef MT9P031_H
+#define MT9P031_H
+
+struct v4l2_subdev;
+
+enum {
+	MT9P031_COLOR_VERSION,
+	MT9P031_MONOCHROME_VERSION,
+};
+
+struct mt9p031_platform_data {
+	int (*set_xclk)(struct v4l2_subdev *subdev, int hz);
+	int (*reset)(struct v4l2_subdev *subdev, int active);
+	int ext_freq; /* input frequency to the mt9p031 for PLL dividers */
+	int target_freq; /* frequency target for the PLL */
+	int version; /* MT9P031_COLOR_VERSION or MT9P031_MONOCHROME_VERSION */
+};
+
+#endif