Input: Add ATMEL QT602240 touchscreen driver

The chip's full name is AT42QT602240 or ATMXT224. This is a capacitive
touchscreen supporting 10-contact multitouch and using I2C interface.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Acked-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/touchscreen/Kconfig

@@ -291,6 +291,18 @@ config TOUCHSCREEN_PENMOUNT
 	  To compile this driver as a module, choose M here: the
 	  module will be called penmount.
 
+config TOUCHSCREEN_QT602240
+	tristate "QT602240 I2C Touchscreen"
+	depends on I2C
+	help
+	  Say Y here if you have the AT42QT602240/ATMXT224 I2C touchscreen
+	  connected to your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called qt602240_ts.
+
 config TOUCHSCREEN_MIGOR
 	tristate "Renesas MIGO-R touchscreen"
 	depends on SH_MIGOR && I2C

drivers/input/touchscreen/Makefile

@@ -32,6 +32,7 @@ obj-$(CONFIG_TOUCHSCREEN_HTCPEN)	+= htcpen.o
 obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE)	+= usbtouchscreen.o
 obj-$(CONFIG_TOUCHSCREEN_PCAP)		+= pcap_ts.o
 obj-$(CONFIG_TOUCHSCREEN_PENMOUNT)	+= penmount.o
+obj-$(CONFIG_TOUCHSCREEN_QT602240)	+= qt602240_ts.o
 obj-$(CONFIG_TOUCHSCREEN_S3C2410)	+= s3c2410_ts.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213)	+= touchit213.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT)	+= touchright.o

include/linux/i2c/qt602240_ts.h

+/*
+ * AT42QT602240/ATMXT224 Touchscreen driver
+ *
+ * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __LINUX_QT602240_TS_H
+#define __LINUX_QT602240_TS_H
+
+/* Orient */
+#define QT602240_NORMAL			0x0
+#define QT602240_DIAGONAL		0x1
+#define QT602240_HORIZONTAL_FLIP	0x2
+#define QT602240_ROTATED_90_COUNTER	0x3
+#define QT602240_VERTICAL_FLIP		0x4
+#define QT602240_ROTATED_90		0x5
+#define QT602240_ROTATED_180		0x6
+#define QT602240_DIAGONAL_COUNTER	0x7
+
+/* The platform data for the AT42QT602240/ATMXT224 touchscreen driver */
+struct qt602240_platform_data {
+	unsigned int x_line;
+	unsigned int y_line;
+	unsigned int x_size;
+	unsigned int y_size;
+	unsigned int blen;
+	unsigned int threshold;
+	unsigned int voltage;
+	unsigned char orient;
+};
+
+#endif /* __LINUX_QT602240_TS_H */