Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (64 commits)
  Input: tsc2005 - remove 'disable' sysfs attribute
  Input: tsc2005 - add open/close
  Input: tsc2005 - handle read errors from SPI layer
  Input: tsc2005 - do not rearm timer in hardirq handler
  Input: tsc2005 - don't use work for 'pen up' handling
  Input: tsc2005 - do not use 0 in place of NULL
  Input: tsc2005 - use true/false for boolean variables
  Input: tsc2005 - hide selftest attribute if we can't reset
  Input: tsc2005 - rework driver initialization code
  Input: tsc2005 - set up bus type in input device
  Input: tsc2005 - set up parent device
  Input: tsc2005 - clear driver data after unbinding
  Input: tsc2005 - add module description
  Input: tsc2005 - remove driver banner message
  Input: tsc2005 - remove incorrect module alias
  Input: tsc2005 - convert to using dev_pm_ops
  Input: tsc2005 - use spi_get/set_drvdata()
  Input: introduce tsc2005 driver
  Input: xen-kbdfront - move to drivers/input/misc
  Input: xen-kbdfront - add grant reference for shared page
  ...

9 files changed, 2399 insertions, 1443 deletions

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 61834ae282e1..112ec55f2939 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -86,6 +86,18 @@ config TOUCHSCREEN_AD7879_SPI
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7879-spi.
 
+config TOUCHSCREEN_ATMEL_MXT
+	tristate "Atmel mXT I2C Touchscreen"
+	depends on I2C
+	help
+	  Say Y here if you have Atmel mXT series I2C touchscreen,
+	  such as AT42QT602240/ATMXT224, connected to your system.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called atmel_mxt_ts.
+
 config TOUCHSCREEN_BITSY
 	tristate "Compaq iPAQ H3600 (Bitsy) touchscreen"
 	depends on SA1100_BITSY
@@ -339,18 +351,6 @@ 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
@@ -423,6 +423,16 @@ config TOUCHSCREEN_UCB1400
 	  To compile this driver as a module, choose M here: the
 	  module will be called ucb1400_ts.
 
+config TOUCHSCREEN_WM831X
+	tristate "Support for WM831x touchscreen controllers"
+	depends on MFD_WM831X
+	help
+	  This enables support for the touchscreen controller on the WM831x
+	  series of PMICs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called wm831x-ts.
+
 config TOUCHSCREEN_WM97XX
 	tristate "Support for WM97xx AC97 touchscreen controllers"
 	depends on AC97_BUS
@@ -629,6 +639,17 @@ config TOUCHSCREEN_TOUCHIT213
 	  To compile this driver as a module, choose M here: the
 	  module will be called touchit213.
 
+config TOUCHSCREEN_TSC2005
+        tristate "TSC2005 based touchscreens"
+        depends on SPI_MASTER
+        help
+          Say Y here if you have a TSC2005 based touchscreen.
+
+	  If unsure, say N.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tsc2005.
+
 config TOUCHSCREEN_TSC2007
 	tristate "TSC2007 based touchscreens"
 	depends on I2C
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 718bcc814952..ca94098d4c92 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_TOUCHSCREEN_AD7879)	+= ad7879.o
 obj-$(CONFIG_TOUCHSCREEN_AD7879_I2C)	+= ad7879-i2c.o
 obj-$(CONFIG_TOUCHSCREEN_AD7879_SPI)	+= ad7879-spi.o
 obj-$(CONFIG_TOUCHSCREEN_ADS7846)	+= ads7846.o
+obj-$(CONFIG_TOUCHSCREEN_ATMEL_MXT)	+= atmel_mxt_ts.o
 obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC)	+= atmel_tsadcc.o
 obj-$(CONFIG_TOUCHSCREEN_BITSY)		+= h3600_ts_input.o
 obj-$(CONFIG_TOUCHSCREEN_BU21013)       += bu21013_ts.o
@@ -37,7 +38,6 @@ 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-$(CONFIG_TOUCHSCREEN_ST1232)	+= st1232.o
 obj-$(CONFIG_TOUCHSCREEN_STMPE)		+= stmpe-ts.o
@@ -45,9 +45,11 @@ obj-$(CONFIG_TOUCHSCREEN_TNETV107X)	+= tnetv107x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213)	+= touchit213.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT)	+= touchright.o
 obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN)	+= touchwin.o
+obj-$(CONFIG_TOUCHSCREEN_TSC2005)	+= tsc2005.o
 obj-$(CONFIG_TOUCHSCREEN_TSC2007)	+= tsc2007.o
 obj-$(CONFIG_TOUCHSCREEN_UCB1400)	+= ucb1400_ts.o
 obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001)	+= wacom_w8001.o
+obj-$(CONFIG_TOUCHSCREEN_WM831X)	+= wm831x-ts.o
 obj-$(CONFIG_TOUCHSCREEN_WM97XX)	+= wm97xx-ts.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705)	+= wm9705.o
 wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712)	+= wm9712.o
diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c
index a1952fcc083e..714d4e0f9f95 100644
--- a/drivers/input/touchscreen/ad7877.c
+++ b/drivers/input/touchscreen/ad7877.c
@@ -41,6 +41,7 @@
 #include <linux/delay.h>
 #include <linux/input.h>
 #include <linux/interrupt.h>
+#include <linux/pm.h>
 #include <linux/slab.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ad7877.h>
@@ -826,39 +827,37 @@ static int __devexit ad7877_remove(struct spi_device *spi)
 	return 0;
 }
 
-#ifdef CONFIG_PM
-static int ad7877_suspend(struct spi_device *spi, pm_message_t message)
+#ifdef CONFIG_PM_SLEEP
+static int ad7877_suspend(struct device *dev)
 {
-	struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	ad7877_disable(ts);
 
 	return 0;
 }
 
-static int ad7877_resume(struct spi_device *spi)
+static int ad7877_resume(struct device *dev)
 {
-	struct ad7877 *ts = dev_get_drvdata(&spi->dev);
+	struct ad7877 *ts = dev_get_drvdata(dev);
 
 	ad7877_enable(ts);
 
 	return 0;
 }
-#else
-#define ad7877_suspend NULL
-#define ad7877_resume  NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(ad7877_pm, ad7877_suspend, ad7877_resume);
+
 static struct spi_driver ad7877_driver = {
 	.driver = {
 		.name	= "ad7877",
 		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
+		.pm	= &ad7877_pm,
 	},
 	.probe		= ad7877_probe,
 	.remove		= __devexit_p(ad7877_remove),
-	.suspend	= ad7877_suspend,
-	.resume		= ad7877_resume,
 };
 
 static int __init ad7877_init(void)
diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c
index 59c6e68c4325..ddf732f3cafc 100644
--- a/drivers/input/touchscreen/ad7879-spi.c
+++ b/drivers/input/touchscreen/ad7879-spi.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/input.h>	/* BUS_SPI */
+#include <linux/pm.h>
 #include <linux/spi/spi.h>
 
 #include "ad7879.h"
@@ -20,9 +21,10 @@
 #define AD7879_WRITECMD(reg) (AD7879_CMD(reg))
 #define AD7879_READCMD(reg)  (AD7879_CMD(reg) | AD7879_CMD_READ)
 
-#ifdef CONFIG_PM
-static int ad7879_spi_suspend(struct spi_device *spi, pm_message_t message)
+#ifdef CONFIG_PM_SLEEP
+static int ad7879_spi_suspend(struct device *dev)
 {
+	struct spi_device *spi = to_spi_device(dev);
 	struct ad7879 *ts = spi_get_drvdata(spi);
 
 	ad7879_suspend(ts);
@@ -30,19 +32,19 @@ static int ad7879_spi_suspend(struct spi_device *spi, pm_message_t message)
 	return 0;
 }
 
-static int ad7879_spi_resume(struct spi_device *spi)
+static int ad7879_spi_resume(struct device *dev)
 {
+	struct spi_device *spi = to_spi_device(dev);
 	struct ad7879 *ts = spi_get_drvdata(spi);
 
 	ad7879_resume(ts);
 
 	return 0;
 }
-#else
-# define ad7879_spi_suspend NULL
-# define ad7879_spi_resume  NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(ad7879_spi_pm, ad7879_spi_suspend, ad7879_spi_resume);
+
 /*
  * ad7879_read/write are only used for initial setup and for sysfs controls.
  * The main traffic is done in ad7879_collect().
@@ -173,11 +175,10 @@ static struct spi_driver ad7879_spi_driver = {
 		.name	= "ad7879",
 		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
+		.pm	= &ad7879_spi_pm,
 	},
 	.probe		= ad7879_spi_probe,
 	.remove		= __devexit_p(ad7879_spi_remove),
-	.suspend	= ad7879_spi_suspend,
-	.resume		= ad7879_spi_resume,
 };
 
 static int __init ad7879_spi_init(void)
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 4bf2316e3284..c24946f51256 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -26,6 +26,7 @@
 #include <linux/input.h>
 #include <linux/interrupt.h>
 #include <linux/slab.h>
+#include <linux/pm.h>
 #include <linux/gpio.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
@@ -892,9 +893,10 @@ static irqreturn_t ads7846_irq(int irq, void *handle)
 	return IRQ_HANDLED;
 }
 
-static int ads7846_suspend(struct spi_device *spi, pm_message_t message)
+#ifdef CONFIG_PM_SLEEP
+static int ads7846_suspend(struct device *dev)
 {
-	struct ads7846 *ts = dev_get_drvdata(&spi->dev);
+	struct ads7846 *ts = dev_get_drvdata(dev);
 
 	mutex_lock(&ts->lock);
 
@@ -914,9 +916,9 @@ static int ads7846_suspend(struct spi_device *spi, pm_message_t message)
 	return 0;
 }
 
-static int ads7846_resume(struct spi_device *spi)
+static int ads7846_resume(struct device *dev)
 {
-	struct ads7846 *ts = dev_get_drvdata(&spi->dev);
+	struct ads7846 *ts = dev_get_drvdata(dev);
 
 	mutex_lock(&ts->lock);
 
@@ -935,6 +937,9 @@ static int ads7846_resume(struct spi_device *spi)
 
 	return 0;
 }
+#endif
+
+static SIMPLE_DEV_PM_OPS(ads7846_pm, ads7846_suspend, ads7846_resume);
 
 static int __devinit ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts)
 {
@@ -1408,11 +1413,10 @@ static struct spi_driver ads7846_driver = {
 		.name	= "ads7846",
 		.bus	= &spi_bus_type,
 		.owner	= THIS_MODULE,
+		.pm	= &ads7846_pm,
 	},
 	.probe		= ads7846_probe,
 	.remove		= __devexit_p(ads7846_remove),
-	.suspend	= ads7846_suspend,
-	.resume		= ads7846_resume,
 };
 
 static int __init ads7846_init(void)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
new file mode 100644
index 000000000000..4012436633b1
--- /dev/null
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -0,0 +1,1211 @@
+/*
+ * Atmel maXTouch 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <linux/i2c/atmel_mxt_ts.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+/* Version */
+#define MXT_VER_20		20
+#define MXT_VER_21		21
+#define MXT_VER_22		22
+
+/* Slave addresses */
+#define MXT_APP_LOW		0x4a
+#define MXT_APP_HIGH		0x4b
+#define MXT_BOOT_LOW		0x24
+#define MXT_BOOT_HIGH		0x25
+
+/* Firmware */
+#define MXT_FW_NAME		"maxtouch.fw"
+
+/* Registers */
+#define MXT_FAMILY_ID		0x00
+#define MXT_VARIANT_ID		0x01
+#define MXT_VERSION		0x02
+#define MXT_BUILD		0x03
+#define MXT_MATRIX_X_SIZE	0x04
+#define MXT_MATRIX_Y_SIZE	0x05
+#define MXT_OBJECT_NUM		0x06
+#define MXT_OBJECT_START	0x07
+
+#define MXT_OBJECT_SIZE		6
+
+/* Object types */
+#define MXT_DEBUG_DIAGNOSTIC	37
+#define MXT_GEN_MESSAGE		5
+#define MXT_GEN_COMMAND		6
+#define MXT_GEN_POWER		7
+#define MXT_GEN_ACQUIRE		8
+#define MXT_TOUCH_MULTI		9
+#define MXT_TOUCH_KEYARRAY	15
+#define MXT_TOUCH_PROXIMITY	23
+#define MXT_PROCI_GRIPFACE	20
+#define MXT_PROCG_NOISE		22
+#define MXT_PROCI_ONETOUCH	24
+#define MXT_PROCI_TWOTOUCH	27
+#define MXT_PROCI_GRIP		40
+#define MXT_PROCI_PALM		41
+#define MXT_SPT_COMMSCONFIG	18
+#define MXT_SPT_GPIOPWM		19
+#define MXT_SPT_SELFTEST	25
+#define MXT_SPT_CTECONFIG	28
+#define MXT_SPT_USERDATA	38
+#define MXT_SPT_DIGITIZER	43
+#define MXT_SPT_MESSAGECOUNT	44
+
+/* MXT_GEN_COMMAND field */
+#define MXT_COMMAND_RESET	0
+#define MXT_COMMAND_BACKUPNV	1
+#define MXT_COMMAND_CALIBRATE	2
+#define MXT_COMMAND_REPORTALL	3
+#define MXT_COMMAND_DIAGNOSTIC	5
+
+/* MXT_GEN_POWER field */
+#define MXT_POWER_IDLEACQINT	0
+#define MXT_POWER_ACTVACQINT	1
+#define MXT_POWER_ACTV2IDLETO	2
+
+/* MXT_GEN_ACQUIRE field */
+#define MXT_ACQUIRE_CHRGTIME	0
+#define MXT_ACQUIRE_TCHDRIFT	2
+#define MXT_ACQUIRE_DRIFTST	3
+#define MXT_ACQUIRE_TCHAUTOCAL	4
+#define MXT_ACQUIRE_SYNC	5
+#define MXT_ACQUIRE_ATCHCALST	6
+#define MXT_ACQUIRE_ATCHCALSTHR	7
+
+/* MXT_TOUCH_MULTI field */
+#define MXT_TOUCH_CTRL		0
+#define MXT_TOUCH_XORIGIN	1
+#define MXT_TOUCH_YORIGIN	2
+#define MXT_TOUCH_XSIZE		3
+#define MXT_TOUCH_YSIZE		4
+#define MXT_TOUCH_BLEN		6
+#define MXT_TOUCH_TCHTHR	7
+#define MXT_TOUCH_TCHDI		8
+#define MXT_TOUCH_ORIENT	9
+#define MXT_TOUCH_MOVHYSTI	11
+#define MXT_TOUCH_MOVHYSTN	12
+#define MXT_TOUCH_NUMTOUCH	14
+#define MXT_TOUCH_MRGHYST	15
+#define MXT_TOUCH_MRGTHR	16
+#define MXT_TOUCH_AMPHYST	17
+#define MXT_TOUCH_XRANGE_LSB	18
+#define MXT_TOUCH_XRANGE_MSB	19
+#define MXT_TOUCH_YRANGE_LSB	20
+#define MXT_TOUCH_YRANGE_MSB	21
+#define MXT_TOUCH_XLOCLIP	22
+#define MXT_TOUCH_XHICLIP	23
+#define MXT_TOUCH_YLOCLIP	24
+#define MXT_TOUCH_YHICLIP	25
+#define MXT_TOUCH_XEDGECTRL	26
+#define MXT_TOUCH_XEDGEDIST	27
+#define MXT_TOUCH_YEDGECTRL	28
+#define MXT_TOUCH_YEDGEDIST	29
+#define MXT_TOUCH_JUMPLIMIT	30
+
+/* MXT_PROCI_GRIPFACE field */
+#define MXT_GRIPFACE_CTRL	0
+#define MXT_GRIPFACE_XLOGRIP	1
+#define MXT_GRIPFACE_XHIGRIP	2
+#define MXT_GRIPFACE_YLOGRIP	3
+#define MXT_GRIPFACE_YHIGRIP	4
+#define MXT_GRIPFACE_MAXTCHS	5
+#define MXT_GRIPFACE_SZTHR1	7
+#define MXT_GRIPFACE_SZTHR2	8
+#define MXT_GRIPFACE_SHPTHR1	9
+#define MXT_GRIPFACE_SHPTHR2	10
+#define MXT_GRIPFACE_SUPEXTTO	11
+
+/* MXT_PROCI_NOISE field */
+#define MXT_NOISE_CTRL		0
+#define MXT_NOISE_OUTFLEN	1
+#define MXT_NOISE_GCAFUL_LSB	3
+#define MXT_NOISE_GCAFUL_MSB	4
+#define MXT_NOISE_GCAFLL_LSB	5
+#define MXT_NOISE_GCAFLL_MSB	6
+#define MXT_NOISE_ACTVGCAFVALID	7
+#define MXT_NOISE_NOISETHR	8
+#define MXT_NOISE_FREQHOPSCALE	10
+#define MXT_NOISE_FREQ0		11
+#define MXT_NOISE_FREQ1		12
+#define MXT_NOISE_FREQ2		13
+#define MXT_NOISE_FREQ3		14
+#define MXT_NOISE_FREQ4		15
+#define MXT_NOISE_IDLEGCAFVALID	16
+
+/* MXT_SPT_COMMSCONFIG */
+#define MXT_COMMS_CTRL		0
+#define MXT_COMMS_CMD		1
+
+/* MXT_SPT_CTECONFIG field */
+#define MXT_CTE_CTRL		0
+#define MXT_CTE_CMD		1
+#define MXT_CTE_MODE		2
+#define MXT_CTE_IDLEGCAFDEPTH	3
+#define MXT_CTE_ACTVGCAFDEPTH	4
+#define MXT_CTE_VOLTAGE		5
+
+#define MXT_VOLTAGE_DEFAULT	2700000
+#define MXT_VOLTAGE_STEP	10000
+
+/* Define for MXT_GEN_COMMAND */
+#define MXT_BOOT_VALUE		0xa5
+#define MXT_BACKUP_VALUE	0x55
+#define MXT_BACKUP_TIME		25	/* msec */
+#define MXT_RESET_TIME		65	/* msec */
+
+#define MXT_FWRESET_TIME	175	/* msec */
+
+/* Command to unlock bootloader */
+#define MXT_UNLOCK_CMD_MSB	0xaa
+#define MXT_UNLOCK_CMD_LSB	0xdc
+
+/* Bootloader mode status */
+#define MXT_WAITING_BOOTLOAD_CMD	0xc0	/* valid 7 6 bit only */
+#define MXT_WAITING_FRAME_DATA	0x80	/* valid 7 6 bit only */
+#define MXT_FRAME_CRC_CHECK	0x02
+#define MXT_FRAME_CRC_FAIL	0x03
+#define MXT_FRAME_CRC_PASS	0x04
+#define MXT_APP_CRC_FAIL	0x40	/* valid 7 8 bit only */
+#define MXT_BOOT_STATUS_MASK	0x3f
+
+/* Touch status */
+#define MXT_SUPPRESS		(1 << 1)
+#define MXT_AMP			(1 << 2)
+#define MXT_VECTOR		(1 << 3)
+#define MXT_MOVE		(1 << 4)
+#define MXT_RELEASE		(1 << 5)
+#define MXT_PRESS		(1 << 6)
+#define MXT_DETECT		(1 << 7)
+
+/* Touchscreen absolute values */
+#define MXT_MAX_XC		0x3ff
+#define MXT_MAX_YC		0x3ff
+#define MXT_MAX_AREA		0xff
+
+#define MXT_MAX_FINGER		10
+
+struct mxt_info {
+	u8 family_id;
+	u8 variant_id;
+	u8 version;
+	u8 build;
+	u8 matrix_xsize;
+	u8 matrix_ysize;
+	u8 object_num;
+};
+
+struct mxt_object {
+	u8 type;
+	u16 start_address;
+	u8 size;
+	u8 instances;
+	u8 num_report_ids;
+
+	/* to map object and message */
+	u8 max_reportid;
+};
+
+struct mxt_message {
+	u8 reportid;
+	u8 message[7];
+	u8 checksum;
+};
+
+struct mxt_finger {
+	int status;
+	int x;
+	int y;
+	int area;
+};
+
+/* Each client has this additional data */
+struct mxt_data {
+	struct i2c_client *client;
+	struct input_dev *input_dev;
+	const struct mxt_platform_data *pdata;
+	struct mxt_object *object_table;
+	struct mxt_info info;
+	struct mxt_finger finger[MXT_MAX_FINGER];
+	unsigned int irq;
+};
+
+static bool mxt_object_readable(unsigned int type)
+{
+	switch (type) {
+	case MXT_GEN_MESSAGE:
+	case MXT_GEN_COMMAND:
+	case MXT_GEN_POWER:
+	case MXT_GEN_ACQUIRE:
+	case MXT_TOUCH_MULTI:
+	case MXT_TOUCH_KEYARRAY:
+	case MXT_TOUCH_PROXIMITY:
+	case MXT_PROCI_GRIPFACE:
+	case MXT_PROCG_NOISE:
+	case MXT_PROCI_ONETOUCH:
+	case MXT_PROCI_TWOTOUCH:
+	case MXT_PROCI_GRIP:
+	case MXT_PROCI_PALM:
+	case MXT_SPT_COMMSCONFIG:
+	case MXT_SPT_GPIOPWM:
+	case MXT_SPT_SELFTEST:
+	case MXT_SPT_CTECONFIG:
+	case MXT_SPT_USERDATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool mxt_object_writable(unsigned int type)
+{
+	switch (type) {
+	case MXT_GEN_COMMAND:
+	case MXT_GEN_POWER:
+	case MXT_GEN_ACQUIRE:
+	case MXT_TOUCH_MULTI:
+	case MXT_TOUCH_KEYARRAY:
+	case MXT_TOUCH_PROXIMITY:
+	case MXT_PROCI_GRIPFACE:
+	case MXT_PROCG_NOISE:
+	case MXT_PROCI_ONETOUCH:
+	case MXT_PROCI_TWOTOUCH:
+	case MXT_PROCI_GRIP:
+	case MXT_PROCI_PALM:
+	case MXT_SPT_GPIOPWM:
+	case MXT_SPT_SELFTEST:
+	case MXT_SPT_CTECONFIG:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static void mxt_dump_message(struct device *dev,
+				  struct mxt_message *message)
+{
+	dev_dbg(dev, "reportid:\t0x%x\n", message->reportid);
+	dev_dbg(dev, "message1:\t0x%x\n", message->message[0]);
+	dev_dbg(dev, "message2:\t0x%x\n", message->message[1]);
+	dev_dbg(dev, "message3:\t0x%x\n", message->message[2]);
+	dev_dbg(dev, "message4:\t0x%x\n", message->message[3]);
+	dev_dbg(dev, "message5:\t0x%x\n", message->message[4]);
+	dev_dbg(dev, "message6:\t0x%x\n", message->message[5]);
+	dev_dbg(dev, "message7:\t0x%x\n", message->message[6]);
+	dev_dbg(dev, "checksum:\t0x%x\n", message->checksum);
+}
+
+static int mxt_check_bootloader(struct i2c_client *client,
+				     unsigned int state)
+{
+	u8 val;
+
+recheck:
+	if (i2c_master_recv(client, &val, 1) != 1) {
+		dev_err(&client->dev, "%s: i2c recv failed\n", __func__);
+		return -EIO;
+	}
+
+	switch (state) {
+	case MXT_WAITING_BOOTLOAD_CMD:
+	case MXT_WAITING_FRAME_DATA:
+		val &= ~MXT_BOOT_STATUS_MASK;
+		break;
+	case MXT_FRAME_CRC_PASS:
+		if (val == MXT_FRAME_CRC_CHECK)
+			goto recheck;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (val != state) {
+		dev_err(&client->dev, "Unvalid bootloader mode state\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int mxt_unlock_bootloader(struct i2c_client *client)
+{
+	u8 buf[2];
+
+	buf[0] = MXT_UNLOCK_CMD_LSB;
+	buf[1] = MXT_UNLOCK_CMD_MSB;
+
+	if (i2c_master_send(client, buf, 2) != 2) {
+		dev_err(&client->dev, "%s: i2c send failed\n", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int mxt_fw_write(struct i2c_client *client,
+			     const u8 *data, unsigned int frame_size)
+{
+	if (i2c_master_send(client, data, frame_size) != frame_size) {
+		dev_err(&client->dev, "%s: i2c send failed\n", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int __mxt_read_reg(struct i2c_client *client,
+			       u16 reg, u16 len, void *val)
+{
+	struct i2c_msg xfer[2];
+	u8 buf[2];
+
+	buf[0] = reg & 0xff;
+	buf[1] = (reg >> 8) & 0xff;
+
+	/* Write register */
+	xfer[0].addr = client->addr;
+	xfer[0].flags = 0;
+	xfer[0].len = 2;
+	xfer[0].buf = buf;
+
+	/* Read data */
+	xfer[1].addr = client->addr;
+	xfer[1].flags = I2C_M_RD;
+	xfer[1].len = len;
+	xfer[1].buf = val;
+
+	if (i2c_transfer(client->adapter, xfer, 2) != 2) {
+		dev_err(&client->dev, "%s: i2c transfer failed\n", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int mxt_read_reg(struct i2c_client *client, u16 reg, u8 *val)
+{
+	return __mxt_read_reg(client, reg, 1, val);
+}
+
+static int mxt_write_reg(struct i2c_client *client, u16 reg, u8 val)
+{
+	u8 buf[3];
+
+	buf[0] = reg & 0xff;
+	buf[1] = (reg >> 8) & 0xff;
+	buf[2] = val;
+
+	if (i2c_master_send(client, buf, 3) != 3) {
+		dev_err(&client->dev, "%s: i2c send failed\n", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int mxt_read_object_table(struct i2c_client *client,
+				      u16 reg, u8 *object_buf)
+{
+	return __mxt_read_reg(client, reg, MXT_OBJECT_SIZE,
+				   object_buf);
+}
+
+static struct mxt_object *
+mxt_get_object(struct mxt_data *data, u8 type)
+{
+	struct mxt_object *object;
+	int i;
+
+	for (i = 0; i < data->info.object_num; i++) {
+		object = data->object_table + i;
+		if (object->type == type)
+			return object;
+	}
+
+	dev_err(&data->client->dev, "Invalid object type\n");
+	return NULL;
+}
+
+static int mxt_read_message(struct mxt_data *data,
+				 struct mxt_message *message)
+{
+	struct mxt_object *object;
+	u16 reg;
+
+	object = mxt_get_object(data, MXT_GEN_MESSAGE);
+	if (!object)
+		return -EINVAL;
+
+	reg = object->start_address;
+	return __mxt_read_reg(data->client, reg,
+			sizeof(struct mxt_message), message);
+}
+
+static int mxt_read_object(struct mxt_data *data,
+				u8 type, u8 offset, u8 *val)
+{
+	struct mxt_object *object;
+	u16 reg;
+
+	object = mxt_get_object(data, type);
+	if (!object)
+		return -EINVAL;
+
+	reg = object->start_address;
+	return __mxt_read_reg(data->client, reg + offset, 1, val);
+}
+
+static int mxt_write_object(struct mxt_data *data,
+				 u8 type, u8 offset, u8 val)
+{
+	struct mxt_object *object;
+	u16 reg;
+
+	object = mxt_get_object(data, type);
+	if (!object)
+		return -EINVAL;
+
+	reg = object->start_address;
+	return mxt_write_reg(data->client, reg + offset, val);
+}
+
+static void mxt_input_report(struct mxt_data *data, int single_id)
+{
+	struct mxt_finger *finger = data->finger;
+	struct input_dev *input_dev = data->input_dev;
+	int status = finger[single_id].status;
+	int finger_num = 0;
+	int id;
+
+	for (id = 0; id < MXT_MAX_FINGER; id++) {
+		if (!finger[id].status)
+			continue;
+
+		input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+				finger[id].status != MXT_RELEASE ?
+				finger[id].area : 0);
+		input_report_abs(input_dev, ABS_MT_POSITION_X,
+				finger[id].x);
+		input_report_abs(input_dev, ABS_MT_POSITION_Y,
+				finger[id].y);
+		input_mt_sync(input_dev);
+
+		if (finger[id].status == MXT_RELEASE)
+			finger[id].status = 0;
+		else
+			finger_num++;
+	}
+
+	input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
+
+	if (status != MXT_RELEASE) {
+		input_report_abs(input_dev, ABS_X, finger[single_id].x);
+		input_report_abs(input_dev, ABS_Y, finger[single_id].y);
+	}
+
+	input_sync(input_dev);
+}
+
+static void mxt_input_touchevent(struct mxt_data *data,
+				      struct mxt_message *message, int id)
+{
+	struct mxt_finger *finger = data->finger;
+	struct device *dev = &data->client->dev;
+	u8 status = message->message[0];
+	int x;
+	int y;
+	int area;
+
+	/* Check the touch is present on the screen */
+	if (!(status & MXT_DETECT)) {
+		if (status & MXT_RELEASE) {
+			dev_dbg(dev, "[%d] released\n", id);
+
+			finger[id].status = MXT_RELEASE;
+			mxt_input_report(data, id);
+		}
+		return;
+	}
+
+	/* Check only AMP detection */
+	if (!(status & (MXT_PRESS | MXT_MOVE)))
+		return;
+
+	x = (message->message[1] << 2) | ((message->message[3] & ~0x3f) >> 6);
+	y = (message->message[2] << 2) | ((message->message[3] & ~0xf3) >> 2);
+	area = message->message[4];
+
+	dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id,
+		status & MXT_MOVE ? "moved" : "pressed",
+		x, y, area);
+
+	finger[id].status = status & MXT_MOVE ?
+				MXT_MOVE : MXT_PRESS;
+	finger[id].x = x;
+	finger[id].y = y;
+	finger[id].area = area;
+
+	mxt_input_report(data, id);
+}
+
+static irqreturn_t mxt_interrupt(int irq, void *dev_id)
+{
+	struct mxt_data *data = dev_id;
+	struct mxt_message message;
+	struct mxt_object *object;
+	struct device *dev = &data->client->dev;
+	int id;
+	u8 reportid;
+	u8 max_reportid;
+	u8 min_reportid;
+
+	do {
+		if (mxt_read_message(data, &message)) {
+			dev_err(dev, "Failed to read message\n");
+			goto end;
+		}
+
+		reportid = message.reportid;
+
+		/* whether reportid is thing of MXT_TOUCH_MULTI */
+		object = mxt_get_object(data, MXT_TOUCH_MULTI);
+		if (!object)
+			goto end;
+
+		max_reportid = object->max_reportid;
+		min_reportid = max_reportid - object->num_report_ids + 1;
+		id = reportid - min_reportid;
+
+		if (reportid >= min_reportid && reportid <= max_reportid)
+			mxt_input_touchevent(data, &message, id);
+		else
+			mxt_dump_message(dev, &message);
+	} while (reportid != 0xff);
+
+end:
+	return IRQ_HANDLED;
+}
+
+static int mxt_check_reg_init(struct mxt_data *data)
+{
+	const struct mxt_platform_data *pdata = data->pdata;
+	struct mxt_object *object;
+	struct device *dev = &data->client->dev;
+	int index = 0;
+	int i, j, config_offset;
+
+	if (!pdata->config) {
+		dev_dbg(dev, "No cfg data defined, skipping reg init\n");
+		return 0;
+	}
+
+	for (i = 0; i < data->info.object_num; i++) {
+		object = data->object_table + i;
+
+		if (!mxt_object_writable(object->type))
+			continue;
+
+		for (j = 0; j < object->size + 1; j++) {
+			config_offset = index + j;
+			if (config_offset > pdata->config_length) {
+				dev_err(dev, "Not enough config data!\n");
+				return -EINVAL;
+			}
+			mxt_write_object(data, object->type, j,
+					 pdata->config[config_offset]);
+		}
+		index += object->size + 1;
+	}
+
+	return 0;
+}
+
+static int mxt_make_highchg(struct mxt_data *data)
+{
+	struct device *dev = &data->client->dev;
+	struct mxt_message message;
+	int count = 10;
+	int error;
+
+	/* Read dummy message to make high CHG pin */
+	do {
+		error = mxt_read_message(data, &message);
+		if (error)
+			return error;
+	} while (message.reportid != 0xff && --count);
+
+	if (!count) {
+		dev_err(dev, "CHG pin isn't cleared\n");
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
+static void mxt_handle_pdata(struct mxt_data *data)
+{
+	const struct mxt_platform_data *pdata = data->pdata;
+	u8 voltage;
+
+	/* Set touchscreen lines */
+	mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_XSIZE,
+			pdata->x_line);
+	mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_YSIZE,
+			pdata->y_line);
+
+	/* Set touchscreen orient */
+	mxt_write_object(data, MXT_TOUCH_MULTI, MXT_TOUCH_ORIENT,
+			pdata->orient);
+
+	/* Set touchscreen burst length */
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_BLEN, pdata->blen);
+
+	/* Set touchscreen threshold */
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_TCHTHR, pdata->threshold);
+
+	/* Set touchscreen resolution */
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
+	mxt_write_object(data, MXT_TOUCH_MULTI,
+			MXT_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
+
+	/* Set touchscreen voltage */
+	if (pdata->voltage) {
+		if (pdata->voltage < MXT_VOLTAGE_DEFAULT) {
+			voltage = (MXT_VOLTAGE_DEFAULT - pdata->voltage) /
+				MXT_VOLTAGE_STEP;
+			voltage = 0xff - voltage + 1;
+		} else
+			voltage = (pdata->voltage - MXT_VOLTAGE_DEFAULT) /
+				MXT_VOLTAGE_STEP;
+
+		mxt_write_object(data, MXT_SPT_CTECONFIG,
+				MXT_CTE_VOLTAGE, voltage);
+	}
+}
+
+static int mxt_get_info(struct mxt_data *data)
+{
+	struct i2c_client *client = data->client;
+	struct mxt_info *info = &data->info;
+	int error;
+	u8 val;
+
+	error = mxt_read_reg(client, MXT_FAMILY_ID, &val);
+	if (error)
+		return error;
+	info->family_id = val;
+
+	error = mxt_read_reg(client, MXT_VARIANT_ID, &val);
+	if (error)
+		return error;
+	info->variant_id = val;
+
+	error = mxt_read_reg(client, MXT_VERSION, &val);
+	if (error)
+		return error;
+	info->version = val;
+
+	error = mxt_read_reg(client, MXT_BUILD, &val);
+	if (error)
+		return error;
+	info->build = val;
+
+	error = mxt_read_reg(client, MXT_OBJECT_NUM, &val);
+	if (error)
+		return error;
+	info-