[v4] input: qt602240 - Add ATMEL QT602240 touchscreen driver

Message ID	1278488423-2727-1-git-send-email-jy0922.shim@samsung.com (mailing list archive)
State	Superseded
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.4/8.14.3) with ESMTP id o677eS0J007464 for <patchwork-linux-input@patchwork.kernel.org>; Wed, 7 Jul 2010 07:40:28 GMT Date: Wed, 07 Jul 2010 16:40:23 +0900 From: Joonyoung Shim <jy0922.shim@samsung.com> Subject: [PATCH v4] input: qt602240 - Add ATMEL QT602240 touchscreen driver To: dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org, kyungmin.park@samsung.com, rydberg@euromail.se, khali@linux-fr.org Message-id: <1278488423-2727-1-git-send-email-jy0922.shim@samsung.com> Content-transfer-encoding: 7BIT Sender: linux-input-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 3b9d5e2..99c8c7e 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -603,4 +603,16 @@ config TOUCHSCREEN_TPS6507X To compile this driver as a module, choose M here: the module will be called tps6507x_ts. +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. + endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 497964a..4f3760b 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -47,3 +47,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o +obj-$(CONFIG_TOUCHSCREEN_QT602240) += qt602240_ts.o diff --git a/drivers/input/touchscreen/qt602240_ts.c b/drivers/input/touchscreen/qt602240_ts.c new file mode 100644 index 0000000..1ef79f8 --- /dev/null +++ b/drivers/input/touchscreen/qt602240_ts.c @@ -0,0 +1,1395 @@ +/* + * qt602240_ts.c - 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; + 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 int 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 1; + default: + return 0; + } +} + +static int 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 1; + default: + return 0; + } +} + +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, + u8 *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 type\n"); + return NULL; +} + +static int qt602240_read_message(struct qt602240_data *data, + struct qt602240_message *message) +{ + struct i2c_client *client = data->client; + 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(client, reg, sizeof(struct qt602240_message), + (u8 *)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 = 0; + int ret; + 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; + break; + default: + dev_err(dev, "Invalid X/Y lines\n"); + return -EINVAL; + } + + ret = qt602240_read_object(data, QT602240_SPT_CTECONFIG, + QT602240_CTE_MODE, &val); + if (ret) + return ret; + + 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 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 ret; + u8 val; + + ret = qt602240_read_reg(client, QT602240_FAMILY_ID, &val); + if (ret) + return ret; + info->family_id = val; + + ret = qt602240_read_reg(client, QT602240_VARIANT_ID, &val); + if (ret) + return ret; + info->variant_id = val; + + ret = qt602240_read_reg(client, QT602240_VERSION, &val); + if (ret) + return ret; + info->version = val; + + ret = qt602240_read_reg(client, QT602240_BUILD, &val); + if (ret) + return ret; + info->build = val; + + ret = qt602240_read_reg(client, QT602240_OBJECT_NUM, &val); + if (ret) + return ret; + info->object_num = val; + + return 0; +} + +static int qt602240_get_object_table(struct qt602240_data *data) +{ + int ret; + 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; + ret = qt602240_read_object_table(data->client, reg, buf); + if (ret) + return ret; + + 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 count = 10; + int ret; + u8 val; + + ret = qt602240_get_info(data); + if (ret) + return ret; + + data->object_table = + kzalloc(sizeof(struct qt602240_data) * info->object_num, + GFP_KERNEL); + if (!data->object_table) { + dev_err(&client->dev, "Failed to allocate memory\n"); + return -ENOMEM; + } + + /* Get object table information */ + ret = qt602240_get_object_table(data); + if (ret) + return ret; + + /* Check register init values */ + ret = qt602240_check_reg_init(data); + if (ret) + return ret; + + /* Check X/Y matrix size */ + ret = qt602240_check_matrix_size(data); + if (ret) + return ret; + + /* Read dummy message to make high CHG pin */ + do { + ret = qt602240_read_object(data, QT602240_GEN_MESSAGE, 0, &val); + if (ret) + return ret; + } while ((val != 0xff) && --count); + + if (!count) { + dev_err(&client->dev, "CHG pin isn't cleared\n"); + return -EBUSY; + } + + 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 */ + ret = qt602240_read_reg(client, QT602240_MATRIX_X_SIZE, &val); + if (ret) + return ret; + info->matrix_xsize = val; + + ret = qt602240_read_reg(client, QT602240_MATRIX_Y_SIZE, &val); + if (ret) + return ret; + 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 ret; + u8 val; + + if (!data) { + dev_err(dev, "The data is NULL\n"); + return -EFAULT; + } + + 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++) { + ret = qt602240_read_object(data, object->type, j, &val); + if (ret) + return count; + + 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; + + if (!data) { + dev_err(dev, "The data is NULL\n"); + return -EFAULT; + } + + 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 err_fw; + + /* Unlock bootloader */ + qt602240_unlock_bootloader(client); + + while (pos < fw->size) { + ret = qt602240_check_bootloader(client, + QT602240_WAITING_FRAME_DATA); + if (ret) + goto err_fw; + + 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 err_fw; + + pos += frame_size; + + dev_dbg(dev, "Updated %zd bytes / %zd bytes\n", pos, fw->size); + } + +err_fw: + 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 ret; + + 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); + + ret = qt602240_load_fw(dev, QT602240_FW_NAME); + if (ret) + dev_err(dev, "The firmware update failed(%d)\n", ret); + else { + dev_dbg(dev, "The firmware update succeeded\n"); + + /* Wait for reset */ + msleep(QT602240_FWRESET_TIME); + + kfree(data->object_table); + + 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 ret; + + 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"); + ret = -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); + + ret = qt602240_initialize(data); + if (ret) + goto err_free_object; + + ret = request_threaded_irq(client->irq, NULL, qt602240_interrupt, + IRQF_TRIGGER_FALLING, client->dev.driver->name, data); + if (ret) { + dev_err(&client->dev, "Failed to register interrupt\n"); + goto err_free_object; + } + + ret = input_register_device(input_dev); + if (ret) + goto err_free_irq; + + ret = sysfs_create_group(&client->dev.kobj, &qt602240_attr_group); + if (ret) + goto err_unregister_device; + + return 0; + +err_unregister_device: + input_unregister_device(input_dev); +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 ret; +} + +static int __devexit qt602240_remove(struct i2c_client *client) +{ + struct qt602240_data *data = i2c_get_clientdata(client); + + free_irq(data->irq, data); + input_unregister_device(data->input_dev); + kfree(data->object_table); + kfree(data); + + sysfs_remove_group(&client->dev.kobj, &qt602240_attr_group); + + 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", + }, + .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 index 0000000..09b55f9 --- /dev/null +++ b/include/linux/i2c/qt602240_ts.h @@ -0,0 +1,39 @@ +/* + * 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 */

[v4] input: qt602240 - Add ATMEL QT602240 touchscreen driver

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Patch