Input: Add ATMEL QT602240 touchscreen driver
authorJoonyoung Shim <jy0922.shim@samsung.com>
Thu, 15 Jul 2010 04:55:30 +0000 (21:55 -0700)
committerDmitry Torokhov <dmitry.torokhov@gmail.com>
Thu, 15 Jul 2010 04:58:52 +0000 (21:58 -0700)
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
drivers/input/touchscreen/Makefile
drivers/input/touchscreen/qt602240_ts.c [new file with mode: 0644]
include/linux/i2c/qt602240_ts.h [new file with mode: 0644]

index ff18d896ea6d6bcb2421d98a749805e21e7bb5c9..7bfcfdff6cf835dbea089d20b6194c4e788fb17f 100644 (file)
@@ -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
index 9efdd44247572e6f5c49a460147013452b72d52a..779de0d9d4134baa7c9c373be804969bd8229e7d 100644 (file)
@@ -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
diff --git a/drivers/input/touchscreen/qt602240_ts.c b/drivers/input/touchscreen/qt602240_ts.c
new file mode 100644 (file)
index 0000000..66b26ad
--- /dev/null
@@ -0,0 +1,1401 @@
+/*
+ * 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <linux/i2c/qt602240_ts.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+
+/* Version */
+#define QT602240_VER_20                        20
+#define QT602240_VER_21                        21
+#define QT602240_VER_22                        22
+
+/* Slave addresses */
+#define QT602240_APP_LOW               0x4a
+#define QT602240_APP_HIGH              0x4b
+#define QT602240_BOOT_LOW              0x24
+#define QT602240_BOOT_HIGH             0x25
+
+/* Firmware */
+#define QT602240_FW_NAME               "qt602240.fw"
+
+/* Registers */
+#define QT602240_FAMILY_ID             0x00
+#define QT602240_VARIANT_ID            0x01
+#define QT602240_VERSION               0x02
+#define QT602240_BUILD                 0x03
+#define QT602240_MATRIX_X_SIZE         0x04
+#define QT602240_MATRIX_Y_SIZE         0x05
+#define QT602240_OBJECT_NUM            0x06
+#define QT602240_OBJECT_START          0x07
+
+#define QT602240_OBJECT_SIZE           6
+
+/* Object types */
+#define QT602240_DEBUG_DIAGNOSTIC      37
+#define QT602240_GEN_MESSAGE           5
+#define QT602240_GEN_COMMAND           6
+#define QT602240_GEN_POWER             7
+#define QT602240_GEN_ACQUIRE           8
+#define QT602240_TOUCH_MULTI           9
+#define QT602240_TOUCH_KEYARRAY                15
+#define QT602240_TOUCH_PROXIMITY       23
+#define QT602240_PROCI_GRIPFACE                20
+#define QT602240_PROCG_NOISE           22
+#define QT602240_PROCI_ONETOUCH                24
+#define QT602240_PROCI_TWOTOUCH                27
+#define QT602240_SPT_COMMSCONFIG       18      /* firmware ver 21 over */
+#define QT602240_SPT_GPIOPWM           19
+#define QT602240_SPT_SELFTEST          25
+#define QT602240_SPT_CTECONFIG         28
+#define QT602240_SPT_USERDATA          38      /* firmware ver 21 over */
+
+/* QT602240_GEN_COMMAND field */
+#define QT602240_COMMAND_RESET         0
+#define QT602240_COMMAND_BACKUPNV      1
+#define QT602240_COMMAND_CALIBRATE     2
+#define QT602240_COMMAND_REPORTALL     3
+#define QT602240_COMMAND_DIAGNOSTIC    5
+
+/* QT602240_GEN_POWER field */
+#define QT602240_POWER_IDLEACQINT      0
+#define QT602240_POWER_ACTVACQINT      1
+#define QT602240_POWER_ACTV2IDLETO     2
+
+/* QT602240_GEN_ACQUIRE field */
+#define QT602240_ACQUIRE_CHRGTIME      0
+#define QT602240_ACQUIRE_TCHDRIFT      2
+#define QT602240_ACQUIRE_DRIFTST       3
+#define QT602240_ACQUIRE_TCHAUTOCAL    4
+#define QT602240_ACQUIRE_SYNC          5
+#define QT602240_ACQUIRE_ATCHCALST     6
+#define QT602240_ACQUIRE_ATCHCALSTHR   7
+
+/* QT602240_TOUCH_MULTI field */
+#define QT602240_TOUCH_CTRL            0
+#define QT602240_TOUCH_XORIGIN         1
+#define QT602240_TOUCH_YORIGIN         2
+#define QT602240_TOUCH_XSIZE           3
+#define QT602240_TOUCH_YSIZE           4
+#define QT602240_TOUCH_BLEN            6
+#define QT602240_TOUCH_TCHTHR          7
+#define QT602240_TOUCH_TCHDI           8
+#define QT602240_TOUCH_ORIENT          9
+#define QT602240_TOUCH_MOVHYSTI                11
+#define QT602240_TOUCH_MOVHYSTN                12
+#define QT602240_TOUCH_NUMTOUCH                14
+#define QT602240_TOUCH_MRGHYST         15
+#define QT602240_TOUCH_MRGTHR          16
+#define QT602240_TOUCH_AMPHYST         17
+#define QT602240_TOUCH_XRANGE_LSB      18
+#define QT602240_TOUCH_XRANGE_MSB      19
+#define QT602240_TOUCH_YRANGE_LSB      20
+#define QT602240_TOUCH_YRANGE_MSB      21
+#define QT602240_TOUCH_XLOCLIP         22
+#define QT602240_TOUCH_XHICLIP         23
+#define QT602240_TOUCH_YLOCLIP         24
+#define QT602240_TOUCH_YHICLIP         25
+#define QT602240_TOUCH_XEDGECTRL       26
+#define QT602240_TOUCH_XEDGEDIST       27
+#define QT602240_TOUCH_YEDGECTRL       28
+#define QT602240_TOUCH_YEDGEDIST       29
+#define QT602240_TOUCH_JUMPLIMIT       30      /* firmware ver 22 over */
+
+/* QT602240_PROCI_GRIPFACE field */
+#define QT602240_GRIPFACE_CTRL         0
+#define QT602240_GRIPFACE_XLOGRIP      1
+#define QT602240_GRIPFACE_XHIGRIP      2
+#define QT602240_GRIPFACE_YLOGRIP      3
+#define QT602240_GRIPFACE_YHIGRIP      4
+#define QT602240_GRIPFACE_MAXTCHS      5
+#define QT602240_GRIPFACE_SZTHR1       7
+#define QT602240_GRIPFACE_SZTHR2       8
+#define QT602240_GRIPFACE_SHPTHR1      9
+#define QT602240_GRIPFACE_SHPTHR2      10
+#define QT602240_GRIPFACE_SUPEXTTO     11
+
+/* QT602240_PROCI_NOISE field */
+#define QT602240_NOISE_CTRL            0
+#define QT602240_NOISE_OUTFLEN         1
+#define QT602240_NOISE_GCAFUL_LSB      3
+#define QT602240_NOISE_GCAFUL_MSB      4
+#define QT602240_NOISE_GCAFLL_LSB      5
+#define QT602240_NOISE_GCAFLL_MSB      6
+#define QT602240_NOISE_ACTVGCAFVALID   7
+#define QT602240_NOISE_NOISETHR                8
+#define QT602240_NOISE_FREQHOPSCALE    10
+#define QT602240_NOISE_FREQ0           11
+#define QT602240_NOISE_FREQ1           12
+#define QT602240_NOISE_FREQ2           13
+#define QT602240_NOISE_FREQ3           14
+#define QT602240_NOISE_FREQ4           15
+#define QT602240_NOISE_IDLEGCAFVALID   16
+
+/* QT602240_SPT_COMMSCONFIG */
+#define QT602240_COMMS_CTRL            0
+#define QT602240_COMMS_CMD             1
+
+/* QT602240_SPT_CTECONFIG field */
+#define QT602240_CTE_CTRL              0
+#define QT602240_CTE_CMD               1
+#define QT602240_CTE_MODE              2
+#define QT602240_CTE_IDLEGCAFDEPTH     3
+#define QT602240_CTE_ACTVGCAFDEPTH     4
+#define QT602240_CTE_VOLTAGE           5       /* firmware ver 21 over */
+
+#define QT602240_VOLTAGE_DEFAULT       2700000
+#define QT602240_VOLTAGE_STEP          10000
+
+/* Define for QT602240_GEN_COMMAND */
+#define QT602240_BOOT_VALUE            0xa5
+#define QT602240_BACKUP_VALUE          0x55
+#define QT602240_BACKUP_TIME           25      /* msec */
+#define QT602240_RESET_TIME            65      /* msec */
+
+#define QT602240_FWRESET_TIME          175     /* msec */
+
+/* Command to unlock bootloader */
+#define QT602240_UNLOCK_CMD_MSB                0xaa
+#define QT602240_UNLOCK_CMD_LSB                0xdc
+
+/* Bootloader mode status */
+#define QT602240_WAITING_BOOTLOAD_CMD  0xc0    /* valid 7 6 bit only */
+#define QT602240_WAITING_FRAME_DATA    0x80    /* valid 7 6 bit only */
+#define QT602240_FRAME_CRC_CHECK       0x02
+#define QT602240_FRAME_CRC_FAIL                0x03
+#define QT602240_FRAME_CRC_PASS                0x04
+#define QT602240_APP_CRC_FAIL          0x40    /* valid 7 8 bit only */
+#define QT602240_BOOT_STATUS_MASK      0x3f
+
+/* Touch status */
+#define QT602240_SUPPRESS              (1 << 1)
+#define QT602240_AMP                   (1 << 2)
+#define QT602240_VECTOR                        (1 << 3)
+#define QT602240_MOVE                  (1 << 4)
+#define QT602240_RELEASE               (1 << 5)
+#define QT602240_PRESS                 (1 << 6)
+#define QT602240_DETECT                        (1 << 7)
+
+/* Touchscreen absolute values */
+#define QT602240_MAX_XC                        0x3ff
+#define QT602240_MAX_YC                        0x3ff
+#define QT602240_MAX_AREA              0xff
+
+#define QT602240_MAX_FINGER            10
+
+/* Initial register values recommended from chip vendor */
+static const u8 init_vals_ver_20[] = {
+       /* QT602240_GEN_COMMAND(6) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_GEN_POWER(7) */
+       0x20, 0xff, 0x32,
+       /* QT602240_GEN_ACQUIRE(8) */
+       0x08, 0x05, 0x05, 0x00, 0x00, 0x00, 0x05, 0x14,
+       /* QT602240_TOUCH_MULTI(9) */
+       0x00, 0x00, 0x00, 0x11, 0x0a, 0x00, 0x00, 0x00, 0x02, 0x00,
+       0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x88, 0x64,
+       /* QT602240_TOUCH_KEYARRAY(15) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00,
+       /* QT602240_SPT_GPIOPWM(19) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00,
+       /* QT602240_PROCI_GRIPFACE(20) */
+       0x00, 0x64, 0x64, 0x64, 0x64, 0x00, 0x00, 0x1e, 0x14, 0x04,
+       0x1e, 0x00,
+       /* QT602240_PROCG_NOISE(22) */
+       0x05, 0x00, 0x00, 0x19, 0x00, 0xe7, 0xff, 0x04, 0x32, 0x00,
+       0x01, 0x0a, 0x0f, 0x14, 0x00, 0x00, 0xe8,
+       /* QT602240_TOUCH_PROXIMITY(23) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00,
+       /* QT602240_PROCI_ONETOUCH(24) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_SELFTEST(25) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_TWOTOUCH(27) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_CTECONFIG(28) */
+       0x00, 0x00, 0x00, 0x04, 0x08,
+};
+
+static const u8 init_vals_ver_21[] = {
+       /* QT602240_GEN_COMMAND(6) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_GEN_POWER(7) */
+       0x20, 0xff, 0x32,
+       /* QT602240_GEN_ACQUIRE(8) */
+       0x0a, 0x00, 0x05, 0x00, 0x00, 0x00, 0x09, 0x23,
+       /* QT602240_TOUCH_MULTI(9) */
+       0x00, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x00, 0x02, 0x00,
+       0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_TOUCH_KEYARRAY(15) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00,
+       /* QT602240_SPT_GPIOPWM(19) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_GRIPFACE(20) */
+       0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x28, 0x04,
+       0x0f, 0x0a,
+       /* QT602240_PROCG_NOISE(22) */
+       0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x23, 0x00,
+       0x00, 0x05, 0x0f, 0x19, 0x23, 0x2d, 0x03,
+       /* QT602240_TOUCH_PROXIMITY(23) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00,
+       /* QT602240_PROCI_ONETOUCH(24) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_SELFTEST(25) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_TWOTOUCH(27) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_CTECONFIG(28) */
+       0x00, 0x00, 0x00, 0x08, 0x10, 0x00,
+};
+
+static const u8 init_vals_ver_22[] = {
+       /* QT602240_GEN_COMMAND(6) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_GEN_POWER(7) */
+       0x20, 0xff, 0x32,
+       /* QT602240_GEN_ACQUIRE(8) */
+       0x0a, 0x00, 0x05, 0x00, 0x00, 0x00, 0x09, 0x23,
+       /* QT602240_TOUCH_MULTI(9) */
+       0x00, 0x00, 0x00, 0x13, 0x0b, 0x00, 0x00, 0x00, 0x02, 0x00,
+       0x00, 0x01, 0x01, 0x0e, 0x0a, 0x0a, 0x0a, 0x0a, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00,
+       /* QT602240_TOUCH_KEYARRAY(15) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00,
+       /* QT602240_SPT_GPIOPWM(19) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_GRIPFACE(20) */
+       0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0x28, 0x04,
+       0x0f, 0x0a,
+       /* QT602240_PROCG_NOISE(22) */
+       0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x23, 0x00,
+       0x00, 0x05, 0x0f, 0x19, 0x23, 0x2d, 0x03,
+       /* QT602240_TOUCH_PROXIMITY(23) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_ONETOUCH(24) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_SELFTEST(25) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       0x00, 0x00, 0x00, 0x00,
+       /* QT602240_PROCI_TWOTOUCH(27) */
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+       /* QT602240_SPT_CTECONFIG(28) */
+       0x00, 0x00, 0x00, 0x08, 0x10, 0x00,
+};
+
+struct qt602240_info {
+       u8 family_id;
+       u8 variant_id;
+       u8 version;
+       u8 build;
+       u8 matrix_xsize;
+       u8 matrix_ysize;
+       u8 object_num;
+};
+
+struct qt602240_object {
+       u8 type;
+       u16 start_address;
+       u8 size;
+       u8 instances;
+       u8 num_report_ids;
+
+       /* to map object and message */
+       u8 max_reportid;
+};
+
+struct qt602240_message {
+       u8 reportid;
+       u8 message[7];
+       u8 checksum;
+};
+
+struct qt602240_finger {
+       int status;
+       int x;
+       int y;
+       int area;
+};
+
+/* Each client has this additional data */
+struct qt602240_data {
+       struct i2c_client *client;
+       struct input_dev *input_dev;
+       const struct qt602240_platform_data *pdata;
+       struct qt602240_object *object_table;
+       struct qt602240_info info;
+       struct qt602240_finger finger[QT602240_MAX_FINGER];
+       unsigned int irq;
+};
+
+static bool qt602240_object_readable(unsigned int type)
+{
+       switch (type) {
+       case QT602240_GEN_MESSAGE:
+       case QT602240_GEN_COMMAND:
+       case QT602240_GEN_POWER:
+       case QT602240_GEN_ACQUIRE:
+       case QT602240_TOUCH_MULTI:
+       case QT602240_TOUCH_KEYARRAY:
+       case QT602240_TOUCH_PROXIMITY:
+       case QT602240_PROCI_GRIPFACE:
+       case QT602240_PROCG_NOISE:
+       case QT602240_PROCI_ONETOUCH:
+       case QT602240_PROCI_TWOTOUCH:
+       case QT602240_SPT_COMMSCONFIG:
+       case QT602240_SPT_GPIOPWM:
+       case QT602240_SPT_SELFTEST:
+       case QT602240_SPT_CTECONFIG:
+       case QT602240_SPT_USERDATA:
+               return true;
+       default:
+               return false;
+       }
+}
+
+static bool qt602240_object_writable(unsigned int type)
+{
+       switch (type) {
+       case QT602240_GEN_COMMAND:
+       case QT602240_GEN_POWER:
+       case QT602240_GEN_ACQUIRE:
+       case QT602240_TOUCH_MULTI:
+       case QT602240_TOUCH_KEYARRAY:
+       case QT602240_TOUCH_PROXIMITY:
+       case QT602240_PROCI_GRIPFACE:
+       case QT602240_PROCG_NOISE:
+       case QT602240_PROCI_ONETOUCH:
+       case QT602240_PROCI_TWOTOUCH:
+       case QT602240_SPT_GPIOPWM:
+       case QT602240_SPT_SELFTEST:
+       case QT602240_SPT_CTECONFIG:
+               return true;
+       default:
+               return false;
+       }
+}
+
+static void qt602240_dump_message(struct device *dev,
+                                 struct qt602240_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 qt602240_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 QT602240_WAITING_BOOTLOAD_CMD:
+       case QT602240_WAITING_FRAME_DATA:
+               val &= ~QT602240_BOOT_STATUS_MASK;
+               break;
+       case QT602240_FRAME_CRC_PASS:
+               if (val == QT602240_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 qt602240_unlock_bootloader(struct i2c_client *client)
+{
+       u8 buf[2];
+
+       buf[0] = QT602240_UNLOCK_CMD_LSB;
+       buf[1] = QT602240_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 qt602240_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 __qt602240_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 qt602240_read_reg(struct i2c_client *client, u16 reg, u8 *val)
+{
+       return __qt602240_read_reg(client, reg, 1, val);
+}
+
+static int qt602240_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 qt602240_read_object_table(struct i2c_client *client,
+                                     u16 reg, u8 *object_buf)
+{
+       return __qt602240_read_reg(client, reg, QT602240_OBJECT_SIZE,
+                                  object_buf);
+}
+
+static struct qt602240_object *
+qt602240_get_object(struct qt602240_data *data, u8 type)
+{
+       struct qt602240_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 qt602240_read_message(struct qt602240_data *data,
+                                struct qt602240_message *message)
+{
+       struct qt602240_object *object;
+       u16 reg;
+
+       object = qt602240_get_object(data, QT602240_GEN_MESSAGE);
+       if (!object)
+               return -EINVAL;
+
+       reg = object->start_address;
+       return __qt602240_read_reg(data->client, reg,
+                       sizeof(struct qt602240_message), message);
+}
+
+static int qt602240_read_object(struct qt602240_data *data,
+                               u8 type, u8 offset, u8 *val)
+{
+       struct qt602240_object *object;
+       u16 reg;
+
+       object = qt602240_get_object(data, type);
+       if (!object)
+               return -EINVAL;
+
+       reg = object->start_address;
+       return __qt602240_read_reg(data->client, reg + offset, 1, val);
+}
+
+static int qt602240_write_object(struct qt602240_data *data,
+                                u8 type, u8 offset, u8 val)
+{
+       struct qt602240_object *object;
+       u16 reg;
+
+       object = qt602240_get_object(data, type);
+       if (!object)
+               return -EINVAL;
+
+       reg = object->start_address;
+       return qt602240_write_reg(data->client, reg + offset, val);
+}
+
+static void qt602240_input_report(struct qt602240_data *data, int single_id)
+{
+       struct qt602240_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 < QT602240_MAX_FINGER; id++) {
+               if (!finger[id].status)
+                       continue;
+
+               input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR,
+                               finger[id].status != QT602240_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 == QT602240_RELEASE)
+                       finger[id].status = 0;
+               else
+                       finger_num++;
+       }
+
+       input_report_key(input_dev, BTN_TOUCH, finger_num > 0);
+
+       if (status != QT602240_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 qt602240_input_touchevent(struct qt602240_data *data,
+                                     struct qt602240_message *message, int id)
+{
+       struct qt602240_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 & QT602240_DETECT)) {
+               if (status & QT602240_RELEASE) {
+                       dev_dbg(dev, "[%d] released\n", id);
+
+                       finger[id].status = QT602240_RELEASE;
+                       qt602240_input_report(data, id);
+               }
+               return;
+       }
+
+       /* Check only AMP detection */
+       if (!(status & (QT602240_PRESS | QT602240_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 & QT602240_MOVE ? "moved" : "pressed",
+               x, y, area);
+
+       finger[id].status = status & QT602240_MOVE ?
+                               QT602240_MOVE : QT602240_PRESS;
+       finger[id].x = x;
+       finger[id].y = y;
+       finger[id].area = area;
+
+       qt602240_input_report(data, id);
+}
+
+static irqreturn_t qt602240_interrupt(int irq, void *dev_id)
+{
+       struct qt602240_data *data = dev_id;
+       struct qt602240_message message;
+       struct qt602240_object *object;
+       struct device *dev = &data->client->dev;
+       int id;
+       u8 reportid;
+       u8 max_reportid;
+       u8 min_reportid;
+
+       do {
+               if (qt602240_read_message(data, &message)) {
+                       dev_err(dev, "Failed to read message\n");
+                       goto end;
+               }
+
+               reportid = message.reportid;
+
+               /* whether reportid is thing of QT602240_TOUCH_MULTI */
+               object = qt602240_get_object(data, QT602240_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)
+                       qt602240_input_touchevent(data, &message, id);
+               else
+                       qt602240_dump_message(dev, &message);
+       } while (reportid != 0xff);
+
+end:
+       return IRQ_HANDLED;
+}
+
+static int qt602240_check_reg_init(struct qt602240_data *data)
+{
+       struct qt602240_object *object;
+       struct device *dev = &data->client->dev;
+       int index = 0;
+       int i, j;
+       u8 version = data->info.version;
+       u8 *init_vals;
+
+       switch (version) {
+       case QT602240_VER_20:
+               init_vals = (u8 *)init_vals_ver_20;
+               break;
+       case QT602240_VER_21:
+               init_vals = (u8 *)init_vals_ver_21;
+               break;
+       case QT602240_VER_22:
+               init_vals = (u8 *)init_vals_ver_22;
+               break;
+       default:
+               dev_err(dev, "Firmware version %d doesn't support\n", version);
+               return -EINVAL;
+       }
+
+       for (i = 0; i < data->info.object_num; i++) {
+               object = data->object_table + i;
+
+               if (!qt602240_object_writable(object->type))
+                       continue;
+
+               for (j = 0; j < object->size + 1; j++)
+                       qt602240_write_object(data, object->type, j,
+                                       init_vals[index + j]);
+
+               index += object->size + 1;
+       }
+
+       return 0;
+}
+
+static int qt602240_check_matrix_size(struct qt602240_data *data)
+{
+       const struct qt602240_platform_data *pdata = data->pdata;
+       struct device *dev = &data->client->dev;
+       int mode = -1;
+       int error;
+       u8 val;
+
+       dev_dbg(dev, "Number of X lines: %d\n", pdata->x_line);
+       dev_dbg(dev, "Number of Y lines: %d\n", pdata->y_line);
+
+       switch (pdata->x_line) {
+       case 0 ... 15:
+               if (pdata->y_line <= 14)
+                       mode = 0;
+               break;
+       case 16:
+               if (pdata->y_line <= 12)
+                       mode = 1;
+               if (pdata->y_line == 13 || pdata->y_line == 14)
+                       mode = 0;
+               break;
+       case 17:
+               if (pdata->y_line <= 11)
+                       mode = 2;
+               if (pdata->y_line == 12 || pdata->y_line == 13)
+                       mode = 1;
+               break;
+       case 18:
+               if (pdata->y_line <= 10)
+                       mode = 3;
+               if (pdata->y_line == 11 || pdata->y_line == 12)
+                       mode = 2;
+               break;
+       case 19:
+               if (pdata->y_line <= 9)
+                       mode = 4;
+               if (pdata->y_line == 10 || pdata->y_line == 11)
+                       mode = 3;
+               break;
+       case 20:
+               mode = 4;
+       }
+
+       if (mode < 0) {
+               dev_err(dev, "Invalid X/Y lines\n");
+               return -EINVAL;
+       }
+
+       error = qt602240_read_object(data, QT602240_SPT_CTECONFIG,
+                               QT602240_CTE_MODE, &val);
+       if (error)
+               return error;
+
+       if (mode == val)
+               return 0;
+
+       /* Change the CTE configuration */
+       qt602240_write_object(data, QT602240_SPT_CTECONFIG,
+                       QT602240_CTE_CTRL, 1);
+       qt602240_write_object(data, QT602240_SPT_CTECONFIG,
+                       QT602240_CTE_MODE, mode);
+       qt602240_write_object(data, QT602240_SPT_CTECONFIG,
+                       QT602240_CTE_CTRL, 0);
+
+       return 0;
+}
+
+static int qt602240_make_highchg(struct qt602240_data *data)
+{
+       struct device *dev = &data->client->dev;
+       int count = 10;
+       int error;
+       u8 val;
+
+       /* Read dummy message to make high CHG pin */
+       do {
+               error = qt602240_read_object(data, QT602240_GEN_MESSAGE, 0, &val);
+               if (error)
+                       return error;
+       } while ((val != 0xff) && --count);
+
+       if (!count) {
+               dev_err(dev, "CHG pin isn't cleared\n");
+               return -EBUSY;
+       }
+
+       return 0;
+}
+
+static void qt602240_handle_pdata(struct qt602240_data *data)
+{
+       const struct qt602240_platform_data *pdata = data->pdata;
+       u8 voltage;
+
+       /* Set touchscreen lines */
+       qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_XSIZE,
+                       pdata->x_line);
+       qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_YSIZE,
+                       pdata->y_line);
+
+       /* Set touchscreen orient */
+       qt602240_write_object(data, QT602240_TOUCH_MULTI, QT602240_TOUCH_ORIENT,
+                       pdata->orient);
+
+       /* Set touchscreen burst length */
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_BLEN, pdata->blen);
+
+       /* Set touchscreen threshold */
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_TCHTHR, pdata->threshold);
+
+       /* Set touchscreen resolution */
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_XRANGE_LSB, (pdata->x_size - 1) & 0xff);
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_XRANGE_MSB, (pdata->x_size - 1) >> 8);
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_YRANGE_LSB, (pdata->y_size - 1) & 0xff);
+       qt602240_write_object(data, QT602240_TOUCH_MULTI,
+                       QT602240_TOUCH_YRANGE_MSB, (pdata->y_size - 1) >> 8);
+
+       /* Set touchscreen voltage */
+       if (data->info.version >= QT602240_VER_21 && pdata->voltage) {
+               if (pdata->voltage < QT602240_VOLTAGE_DEFAULT) {
+                       voltage = (QT602240_VOLTAGE_DEFAULT - pdata->voltage) /
+                               QT602240_VOLTAGE_STEP;
+                       voltage = 0xff - voltage + 1;
+               } else
+                       voltage = (pdata->voltage - QT602240_VOLTAGE_DEFAULT) /
+                               QT602240_VOLTAGE_STEP;
+
+               qt602240_write_object(data, QT602240_SPT_CTECONFIG,
+                               QT602240_CTE_VOLTAGE, voltage);
+       }
+}
+
+static int qt602240_get_info(struct qt602240_data *data)
+{
+       struct i2c_client *client = data->client;
+       struct qt602240_info *info = &data->info;
+       int error;
+       u8 val;
+
+       error = qt602240_read_reg(client, QT602240_FAMILY_ID, &val);
+       if (error)
+               return error;
+       info->family_id = val;
+
+       error = qt602240_read_reg(client, QT602240_VARIANT_ID, &val);
+       if (error)
+               return error;
+       info->variant_id = val;
+
+       error = qt602240_read_reg(client, QT602240_VERSION, &val);
+       if (error)
+               return error;
+       info->version = val;
+
+       error = qt602240_read_reg(client, QT602240_BUILD, &val);
+       if (error)
+               return error;
+       info->build = val;
+
+       error = qt602240_read_reg(client, QT602240_OBJECT_NUM, &val);
+       if (error)
+               return error;
+       info->object_num = val;
+
+       return 0;
+}
+
+static int qt602240_get_object_table(struct qt602240_data *data)
+{
+       int error;
+       int i;
+       u16 reg;
+       u8 reportid = 0;
+       u8 buf[QT602240_OBJECT_SIZE];
+
+       for (i = 0; i < data->info.object_num; i++) {
+               struct qt602240_object *object = data->object_table + i;
+
+               reg = QT602240_OBJECT_START + QT602240_OBJECT_SIZE * i;
+               error = qt602240_read_object_table(data->client, reg, buf);
+               if (error)
+                       return error;
+
+               object->type = buf[0];
+               object->start_address = (buf[2] << 8) | buf[1];
+               object->size = buf[3];
+               object->instances = buf[4];
+               object->num_report_ids = buf[5];
+
+               if (object->num_report_ids) {
+                       reportid += object->num_report_ids *
+                                       (object->instances + 1);
+                       object->max_reportid = reportid;
+               }
+       }
+
+       return 0;
+}
+
+static int qt602240_initialize(struct qt602240_data *data)
+{
+       struct i2c_client *client = data->client;
+       struct qt602240_info *info = &data->info;
+       int error;
+       u8 val;
+
+       error = qt602240_get_info(data);
+       if (error)
+               return error;
+
+       data->object_table = kcalloc(info->object_num,
+                                    sizeof(struct qt602240_data),
+                                    GFP_KERNEL);
+       if (!data->object_table) {
+               dev_err(&client->dev, "Failed to allocate memory\n");
+               return -ENOMEM;
+       }
+
+       /* Get object table information */
+       error = qt602240_get_object_table(data);
+       if (error)
+               return error;
+
+       /* Check register init values */
+       error = qt602240_check_reg_init(data);
+       if (error)
+               return error;
+
+       /* Check X/Y matrix size */
+       error = qt602240_check_matrix_size(data);
+       if (error)
+               return error;
+
+       error = qt602240_make_highchg(data);
+       if (error)
+               return error;
+
+       qt602240_handle_pdata(data);
+
+       /* Backup to memory */
+       qt602240_write_object(data, QT602240_GEN_COMMAND,
+                       QT602240_COMMAND_BACKUPNV,
+                       QT602240_BACKUP_VALUE);
+       msleep(QT602240_BACKUP_TIME);
+
+       /* Soft reset */
+       qt602240_write_object(data, QT602240_GEN_COMMAND,
+                       QT602240_COMMAND_RESET, 1);
+       msleep(QT602240_RESET_TIME);
+
+       /* Update matrix size at info struct */
+       error = qt602240_read_reg(client, QT602240_MATRIX_X_SIZE, &val);
+       if (error)
+               return error;
+       info->matrix_xsize = val;
+
+       error = qt602240_read_reg(client, QT602240_MATRIX_Y_SIZE, &val);
+       if (error)
+               return error;
+       info->matrix_ysize = val;
+
+       dev_info(&client->dev,
+                       "Family ID: %d Variant ID: %d Version: %d Build: %d\n",
+                       info->family_id, info->variant_id, info->version,
+                       info->build);
+
+       dev_info(&client->dev,
+                       "Matrix X Size: %d Matrix Y Size: %d Object Num: %d\n",
+                       info->matrix_xsize, info->matrix_ysize,
+                       info->object_num);
+
+       return 0;
+}
+
+static ssize_t qt602240_object_show(struct device *dev,
+                                   struct device_attribute *attr, char *buf)
+{
+       struct qt602240_data *data = dev_get_drvdata(dev);
+       struct qt602240_object *object;
+       int count = 0;
+       int i, j;
+       int error;
+       u8 val;
+
+       for (i = 0; i < data->info.object_num; i++) {
+               object = data->object_table + i;
+
+               count += sprintf(buf + count,
+                               "Object Table Element %d(Type %d)\n",
+                               i + 1, object->type);
+
+               if (!qt602240_object_readable(object->type)) {
+                       count += sprintf(buf + count, "\n");
+                       continue;
+               }
+
+               for (j = 0; j < object->size + 1; j++) {
+                       error = qt602240_read_object(data,
+                                               object->type, j, &val);
+                       if (error)
+                               return error;
+
+                       count += sprintf(buf + count,
+                                       "  Byte %d: 0x%x (%d)\n", j, val, val);
+               }
+
+               count += sprintf(buf + count, "\n");
+       }
+
+       return count;
+}
+
+static int qt602240_load_fw(struct device *dev, const char *fn)
+{
+       struct qt602240_data *data = dev_get_drvdata(dev);
+       struct i2c_client *client = data->client;
+       const struct firmware *fw = NULL;
+       unsigned int frame_size;
+       unsigned int pos = 0;
+       int ret;
+
+       ret = request_firmware(&fw, fn, dev);
+       if (ret) {
+               dev_err(dev, "Unable to open firmware %s\n", fn);
+               return ret;
+       }
+
+       /* Change to the bootloader mode */
+       qt602240_write_object(data, QT602240_GEN_COMMAND,
+                       QT602240_COMMAND_RESET, QT602240_BOOT_VALUE);
+       msleep(QT602240_RESET_TIME);
+
+       /* Change to slave address of bootloader */
+       if (client->addr == QT602240_APP_LOW)
+               client->addr = QT602240_BOOT_LOW;
+       else
+               client->addr = QT602240_BOOT_HIGH;
+
+       ret = qt602240_check_bootloader(client, QT602240_WAITING_BOOTLOAD_CMD);
+       if (ret)
+               goto out;
+
+       /* Unlock bootloader */
+       qt602240_unlock_bootloader(client);
+
+       while (pos < fw->size) {
+               ret = qt602240_check_bootloader(client,
+                                               QT602240_WAITING_FRAME_DATA);
+               if (ret)
+                       goto out;
+
+               frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1));
+
+               /* We should add 2 at frame size as the the firmware data is not
+                * included the CRC bytes.
+                */
+               frame_size += 2;
+
+               /* Write one frame to device */
+               qt602240_fw_write(client, fw->data + pos, frame_size);
+
+               ret = qt602240_check_bootloader(client,
+                                               QT602240_FRAME_CRC_PASS);
+               if (ret)
+                       goto out;
+
+               pos += frame_size;
+
+               dev_dbg(dev, "Updated %d bytes / %zd bytes\n", pos, fw->size);
+       }
+
+out:
+       release_firmware(fw);
+
+       /* Change to slave address of application */
+       if (client->addr == QT602240_BOOT_LOW)
+               client->addr = QT602240_APP_LOW;
+       else
+               client->addr = QT602240_APP_HIGH;
+
+       return ret;
+}
+
+static ssize_t qt602240_update_fw_store(struct device *dev,
+                                       struct device_attribute *attr,
+                                       const char *buf, size_t count)
+{
+       struct qt602240_data *data = dev_get_drvdata(dev);
+       unsigned int version;
+       int error;
+
+       if (sscanf(buf, "%u", &version) != 1) {
+               dev_err(dev, "Invalid values\n");
+               return -EINVAL;
+       }
+
+       if (data->info.version < QT602240_VER_21 || version < QT602240_VER_21) {
+               dev_err(dev, "FW update supported starting with version 21\n");
+               return -EINVAL;
+       }
+
+       disable_irq(data->irq);
+
+       error = qt602240_load_fw(dev, QT602240_FW_NAME);
+       if (error) {
+               dev_err(dev, "The firmware update failed(%d)\n", error);
+               count = error;
+       } else {
+               dev_dbg(dev, "The firmware update succeeded\n");
+
+               /* Wait for reset */
+               msleep(QT602240_FWRESET_TIME);
+
+               kfree(data->object_table);
+               data->object_table = NULL;
+
+               qt602240_initialize(data);
+       }
+
+       enable_irq(data->irq);
+
+       return count;
+}
+
+static DEVICE_ATTR(object, 0444, qt602240_object_show, NULL);
+static DEVICE_ATTR(update_fw, 0664, NULL, qt602240_update_fw_store);
+
+static struct attribute *qt602240_attrs[] = {
+       &dev_attr_object.attr,
+       &dev_attr_update_fw.attr,
+       NULL
+};
+
+static const struct attribute_group qt602240_attr_group = {
+       .attrs = qt602240_attrs,
+};
+
+static void qt602240_start(struct qt602240_data *data)
+{
+       /* Touch enable */
+       qt602240_write_object(data,
+                       QT602240_TOUCH_MULTI, QT602240_TOUCH_CTRL, 0x83);
+}
+
+static void qt602240_stop(struct qt602240_data *data)
+{
+       /* Touch disable */
+       qt602240_write_object(data,
+                       QT602240_TOUCH_MULTI, QT602240_TOUCH_CTRL, 0);
+}
+
+static int qt602240_input_open(struct input_dev *dev)
+{
+       struct qt602240_data *data = input_get_drvdata(dev);
+
+       qt602240_start(data);
+
+       return 0;
+}
+
+static void qt602240_input_close(struct input_dev *dev)
+{
+       struct qt602240_data *data = input_get_drvdata(dev);
+
+       qt602240_stop(data);
+}
+
+static int __devinit qt602240_probe(struct i2c_client *client,
+               const struct i2c_device_id *id)
+{
+       struct qt602240_data *data;
+       struct input_dev *input_dev;
+       int error;
+
+       if (!client->dev.platform_data)
+               return -EINVAL;
+
+       data = kzalloc(sizeof(struct qt602240_data), GFP_KERNEL);
+       input_dev = input_allocate_device();
+       if (!data || !input_dev) {
+               dev_err(&client->dev, "Failed to allocate memory\n");
+               error = -ENOMEM;
+               goto err_free_mem;
+       }
+
+       input_dev->name = "AT42QT602240/ATMXT224 Touchscreen";
+       input_dev->id.bustype = BUS_I2C;
+       input_dev->dev.parent = &client->dev;
+       input_dev->open = qt602240_input_open;
+       input_dev->close = qt602240_input_close;
+
+       __set_bit(EV_ABS, input_dev->evbit);
+       __set_bit(EV_KEY, input_dev->evbit);
+       __set_bit(BTN_TOUCH, input_dev->keybit);
+
+       /* For single touch */
+       input_set_abs_params(input_dev, ABS_X,
+                            0, QT602240_MAX_XC, 0, 0);
+       input_set_abs_params(input_dev, ABS_Y,
+                            0, QT602240_MAX_YC, 0, 0);
+
+       /* For multi touch */
+       input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR,
+                            0, QT602240_MAX_AREA, 0, 0);
+       input_set_abs_params(input_dev, ABS_MT_POSITION_X,
+                            0, QT602240_MAX_XC, 0, 0);
+       input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
+                            0, QT602240_MAX_YC, 0, 0);
+
+       input_set_drvdata(input_dev, data);
+
+       data->client = client;
+       data->input_dev = input_dev;
+       data->pdata = client->dev.platform_data;
+       data->irq = client->irq;
+
+       i2c_set_clientdata(client, data);
+
+       error = qt602240_initialize(data);
+       if (error)
+               goto err_free_object;
+
+       error = request_threaded_irq(client->irq, NULL, qt602240_interrupt,
+                       IRQF_TRIGGER_FALLING, client->dev.driver->name, data);
+       if (error) {
+               dev_err(&client->dev, "Failed to register interrupt\n");
+               goto err_free_object;
+       }
+
+       error = input_register_device(input_dev);
+       if (error)
+               goto err_free_irq;
+
+       error = sysfs_create_group(&client->dev.kobj, &qt602240_attr_group);
+       if (error)
+               goto err_unregister_device;
+
+       return 0;
+
+err_unregister_device:
+       input_unregister_device(input_dev);
+       input_dev = NULL;
+err_free_irq:
+       free_irq(client->irq, data);
+err_free_object:
+       kfree(data->object_table);
+err_free_mem:
+       input_free_device(input_dev);
+       kfree(data);
+       return error;
+}
+
+static int __devexit qt602240_remove(struct i2c_client *client)
+{
+       struct qt602240_data *data = i2c_get_clientdata(client);
+
+       sysfs_remove_group(&client->dev.kobj, &qt602240_attr_group);
+       free_irq(data->irq, data);
+       input_unregister_device(data->input_dev);
+       kfree(data->object_table);
+       kfree(data);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int qt602240_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+       struct qt602240_data *data = i2c_get_clientdata(client);
+       struct input_dev *input_dev = data->input_dev;
+
+       mutex_lock(&input_dev->mutex);
+
+       if (input_dev->users)
+               qt602240_stop(data);
+
+       mutex_unlock(&input_dev->mutex);
+
+       return 0;
+}
+
+static int qt602240_resume(struct i2c_client *client)
+{
+       struct qt602240_data *data = i2c_get_clientdata(client);
+       struct input_dev *input_dev = data->input_dev;
+
+       /* Soft reset */
+       qt602240_write_object(data, QT602240_GEN_COMMAND,
+                       QT602240_COMMAND_RESET, 1);
+
+       msleep(QT602240_RESET_TIME);
+
+       mutex_lock(&input_dev->mutex);
+
+       if (input_dev->users)
+               qt602240_start(data);
+
+       mutex_unlock(&input_dev->mutex);
+
+       return 0;
+}
+#else
+#define qt602240_suspend       NULL
+#define qt602240_resume                NULL
+#endif
+
+static const struct i2c_device_id qt602240_id[] = {
+       { "qt602240_ts", 0 },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, qt602240_id);
+
+static struct i2c_driver qt602240_driver = {
+       .driver = {
+               .name   = "qt602240_ts",
+               .owner  = THIS_MODULE,
+       },
+       .probe          = qt602240_probe,
+       .remove         = __devexit_p(qt602240_remove),
+       .suspend        = qt602240_suspend,
+       .resume         = qt602240_resume,
+       .id_table       = qt602240_id,
+};
+
+static int __init qt602240_init(void)
+{
+       return i2c_add_driver(&qt602240_driver);
+}
+
+static void __exit qt602240_exit(void)
+{
+       i2c_del_driver(&qt602240_driver);
+}
+
+module_init(qt602240_init);
+module_exit(qt602240_exit);
+
+/* Module information */
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_DESCRIPTION("AT42QT602240/ATMXT224 Touchscreen driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/i2c/qt602240_ts.h b/include/linux/i2c/qt602240_ts.h
new file mode 100644 (file)
index 0000000..c5033e1
--- /dev/null
@@ -0,0 +1,38 @@
+/*
+ * 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 */