From 885c316d776b64728b4ed30e3af60d23c9e46825 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 7 May 2008 11:15:02 -0400 Subject: Input: add support for SuperH MigoR touchscreen This is V2 of the MigoR touch screen driver. The chip we interface to is unfortunately a custom designed microcontroller speaking some undocumented protocol over i2c. The board specific code is expected to register this device as an i2c chip using struct i2c_board_info [] and i2c_register_board_info(). [dtor@mail.ru: don't enable touchscreen if there are no users] Signed-off-by: Magnus Damm Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/input/touchscreen/Kconfig') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 565ec711c2ee..2cb4df0e0a7b 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -146,6 +146,17 @@ config TOUCHSCREEN_PENMOUNT To compile this driver as a module, choose M here: the module will be called penmount. +config TOUCHSCREEN_MIGOR + tristate "Renesas MIGO-R touchscreen" + depends on SH_MIGOR && I2C + help + Say Y here to enable MIGO-R touchscreen support. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called migor_ts. + config TOUCHSCREEN_TOUCHRIGHT tristate "Touchright serial touchscreen" select SERIO -- cgit v1.2.3 From 5a18c343a6bee4b38965f14a40ccb95306641f87 Mon Sep 17 00:00:00 2001 From: Pau Oliva Fora Date: Mon, 2 Jun 2008 00:38:35 -0400 Subject: Input: add HTC Shift Touchscreen Driver Signed-off-by: Pau Oliva Fora Signed-off-by: Dmitry Torokhov --- MAINTAINERS | 6 + drivers/input/touchscreen/Kconfig | 12 ++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/htcpen.c | 255 +++++++++++++++++++++++++++++++++++++ 4 files changed, 274 insertions(+) create mode 100644 drivers/input/touchscreen/htcpen.c (limited to 'drivers/input/touchscreen/Kconfig') diff --git a/MAINTAINERS b/MAINTAINERS index bc1c0088dc49..5f12d73142a0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1928,6 +1928,12 @@ M: mikulas@artax.karlin.mff.cuni.cz W: http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi S: Maintained +HTCPEN TOUCHSCREEN DRIVER +P: Pau Oliva Fora +M: pof@eslack.org +L: linux-input@vger.kernel.org +S: Maintained + HUGETLB FILESYSTEM P: William Irwin M: wli@holomorphy.com diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 2cb4df0e0a7b..030a89734855 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -134,6 +134,18 @@ config TOUCHSCREEN_HP7XX To compile this driver as a module, choose M here: the module will be called jornada720_ts. +config TOUCHSCREEN_HTCPEN + tristate "HTC Shift X9500 touchscreen" + depends on ISA + help + Say Y here if you have an HTC Shift UMPC also known as HTC X9500 + Clio / Shangrila and want to support the built-in touchscreen. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called htcpen. + config TOUCHSCREEN_PENMOUNT tristate "Penmount serial touchscreen" select SERIO diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 30e86816cd41..64a11f443dce 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -17,6 +17,7 @@ obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o +obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o diff --git a/drivers/input/touchscreen/htcpen.c b/drivers/input/touchscreen/htcpen.c new file mode 100644 index 000000000000..62811de6f18f --- /dev/null +++ b/drivers/input/touchscreen/htcpen.c @@ -0,0 +1,255 @@ +/* + * HTC Shift touchscreen driver + * + * Copyright (C) 2008 Pau Oliva Fora + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +MODULE_AUTHOR("Pau Oliva Fora "); +MODULE_DESCRIPTION("HTC Shift touchscreen driver"); +MODULE_LICENSE("GPL"); + +#define HTCPEN_PORT_IRQ_CLEAR 0x068 +#define HTCPEN_PORT_INIT 0x06c +#define HTCPEN_PORT_INDEX 0x0250 +#define HTCPEN_PORT_DATA 0x0251 +#define HTCPEN_IRQ 3 + +#define DEVICE_ENABLE 0xa2 +#define DEVICE_DISABLE 0xa3 + +#define X_INDEX 3 +#define Y_INDEX 5 +#define TOUCH_INDEX 0xb +#define LSB_XY_INDEX 0xc +#define X_AXIS_MAX 2040 +#define Y_AXIS_MAX 2040 + +static int invert_x; +module_param(invert_x, bool, 0644); +MODULE_PARM_DESC(invert_x, "If set, X axis is inverted"); +static int invert_y; +module_param(invert_y, bool, 0644); +MODULE_PARM_DESC(invert_y, "If set, Y axis is inverted"); + +static struct pnp_device_id pnp_ids[] = { + { .id = "PNP0cc0" }, + { .id = "" } +}; +MODULE_DEVICE_TABLE(pnp, pnp_ids); + +static irqreturn_t htcpen_interrupt(int irq, void *handle) +{ + struct input_dev *htcpen_dev = handle; + unsigned short x, y, xy; + + /* 0 = press; 1 = release */ + outb_p(TOUCH_INDEX, HTCPEN_PORT_INDEX); + + if (inb_p(HTCPEN_PORT_DATA)) { + input_report_key(htcpen_dev, BTN_TOUCH, 0); + } else { + outb_p(X_INDEX, HTCPEN_PORT_INDEX); + x = inb_p(HTCPEN_PORT_DATA); + + outb_p(Y_INDEX, HTCPEN_PORT_INDEX); + y = inb_p(HTCPEN_PORT_DATA); + + outb_p(LSB_XY_INDEX, HTCPEN_PORT_INDEX); + xy = inb_p(HTCPEN_PORT_DATA); + + /* get high resolution value of X and Y using LSB */ + x = X_AXIS_MAX - ((x * 8) + ((xy >> 4) & 0xf)); + y = (y * 8) + (xy & 0xf); + if (invert_x) + x = X_AXIS_MAX - x; + if (invert_y) + y = Y_AXIS_MAX - y; + + if (x != X_AXIS_MAX && x != 0) { + input_report_key(htcpen_dev, BTN_TOUCH, 1); + input_report_abs(htcpen_dev, ABS_X, x); + input_report_abs(htcpen_dev, ABS_Y, y); + } + } + + input_sync(htcpen_dev); + + inb_p(HTCPEN_PORT_IRQ_CLEAR); + + return IRQ_HANDLED; +} + +static int htcpen_open(struct input_dev *dev) +{ + outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT); + + return 0; +} + +static void htcpen_close(struct input_dev *dev) +{ + outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT); + synchronize_irq(HTCPEN_IRQ); +} + +static int __devinit htcpen_isa_probe(struct device *dev, unsigned int id) +{ + struct input_dev *htcpen_dev; + int err = -EBUSY; + + if (!request_region(HTCPEN_PORT_IRQ_CLEAR, 1, "htcpen")) { + printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n", + HTCPEN_PORT_IRQ_CLEAR); + goto request_region1_failed; + } + + if (!request_region(HTCPEN_PORT_INIT, 1, "htcpen")) { + printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n", + HTCPEN_PORT_INIT); + goto request_region2_failed; + } + + if (!request_region(HTCPEN_PORT_INDEX, 2, "htcpen")) { + printk(KERN_ERR "htcpen: unable to get IO region 0x%x\n", + HTCPEN_PORT_INDEX); + goto request_region3_failed; + } + + htcpen_dev = input_allocate_device(); + if (!htcpen_dev) { + printk(KERN_ERR "htcpen: can't allocate device\n"); + err = -ENOMEM; + goto input_alloc_failed; + } + + htcpen_dev->name = "HTC Shift EC TouchScreen"; + htcpen_dev->id.bustype = BUS_ISA; + + htcpen_dev->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY); + htcpen_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(htcpen_dev, ABS_X, 0, X_AXIS_MAX, 0, 0); + input_set_abs_params(htcpen_dev, ABS_Y, 0, Y_AXIS_MAX, 0, 0); + + htcpen_dev->open = htcpen_open; + htcpen_dev->close = htcpen_close; + + err = request_irq(HTCPEN_IRQ, htcpen_interrupt, 0, "htcpen", + htcpen_dev); + if (err) { + printk(KERN_ERR "htcpen: irq busy\n"); + goto request_irq_failed; + } + + inb_p(HTCPEN_PORT_IRQ_CLEAR); + + err = input_register_device(htcpen_dev); + if (err) + goto input_register_failed; + + dev_set_drvdata(dev, htcpen_dev); + + return 0; + + input_register_failed: + free_irq(HTCPEN_IRQ, htcpen_dev); + request_irq_failed: + input_free_device(htcpen_dev); + input_alloc_failed: + release_region(HTCPEN_PORT_INDEX, 2); + request_region3_failed: + release_region(HTCPEN_PORT_INIT, 1); + request_region2_failed: + release_region(HTCPEN_PORT_IRQ_CLEAR, 1); + request_region1_failed: + return err; +} + +static int __devexit htcpen_isa_remove(struct device *dev, unsigned int id) +{ + struct input_dev *htcpen_dev = dev_get_drvdata(dev); + + input_unregister_device(htcpen_dev); + + free_irq(HTCPEN_IRQ, htcpen_dev); + + release_region(HTCPEN_PORT_INDEX, 2); + release_region(HTCPEN_PORT_INIT, 1); + release_region(HTCPEN_PORT_IRQ_CLEAR, 1); + + dev_set_drvdata(dev, NULL); + + return 0; +} + +#ifdef CONFIG_PM +static int htcpen_isa_suspend(struct device *dev, unsigned int n, + pm_message_t state) +{ + outb_p(DEVICE_DISABLE, HTCPEN_PORT_INIT); + + return 0; +} + +static int htcpen_isa_resume(struct device *dev, unsigned int n) +{ + outb_p(DEVICE_ENABLE, HTCPEN_PORT_INIT); + + return 0; +} +#endif + +static struct isa_driver htcpen_isa_driver = { + .probe = htcpen_isa_probe, + .remove = __devexit_p(htcpen_isa_remove), +#ifdef CONFIG_PM + .suspend = htcpen_isa_suspend, + .resume = htcpen_isa_resume, +#endif + .driver = { + .owner = THIS_MODULE, + .name = "htcpen", + } +}; + +static struct dmi_system_id __initdata htcshift_dmi_table[] = { + { + .ident = "Shift", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "High Tech Computer Corp"), + DMI_MATCH(DMI_PRODUCT_NAME, "Shift"), + }, + }, + { } +}; + +static int __init htcpen_isa_init(void) +{ + if (!dmi_check_system(htcshift_dmi_table)) + return -ENODEV; + + return isa_register_driver(&htcpen_isa_driver, 1); +} + +static void __exit htcpen_isa_exit(void) +{ + isa_unregister_driver(&htcpen_isa_driver); +} + +module_init(htcpen_isa_init); +module_exit(htcpen_isa_exit); -- cgit v1.2.3 From 3cadd2d98972f806165c634553ac4918b2b7920c Mon Sep 17 00:00:00 2001 From: Richard Lemon Date: Thu, 26 Jun 2008 10:10:41 -0400 Subject: Input: Add driver for iNexio serial touchscreen. Signed-off-by: Richard Lemon Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 12 +++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/inexio.c | 207 +++++++++++++++++++++++++++++++++++++ include/linux/serio.h | 1 + 4 files changed, 221 insertions(+) create mode 100644 drivers/input/touchscreen/inexio.c (limited to 'drivers/input/touchscreen/Kconfig') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 030a89734855..4085791e7be2 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -103,6 +103,18 @@ config TOUCHSCREEN_MTOUCH To compile this driver as a module, choose M here: the module will be called mtouch. +config TOUCHSCREEN_INEXIO + tristate "iNexio serial touchscreens" + select SERIO + help + Say Y here if you have an iNexio serial touchscreen connected to + your system. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called inexio. + config TOUCHSCREEN_MK712 tristate "ICS MicroClock MK712 touchscreen" help diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 64a11f443dce..d63bcdcd28ec 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o +obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o diff --git a/drivers/input/touchscreen/inexio.c b/drivers/input/touchscreen/inexio.c new file mode 100644 index 000000000000..192ade0a0fb9 --- /dev/null +++ b/drivers/input/touchscreen/inexio.c @@ -0,0 +1,207 @@ +/* + * iNexio serial touchscreen driver + * + * Copyright (c) 2008 Richard Lemon + * Based on the mtouch driver (c) Vojtech Pavlik and Dan Streetman + * + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/* + * 2008/06/19 Richard Lemon + * Copied mtouch.c and edited for iNexio protocol + */ + +#include +#include +#include +#include +#include +#include +#include + +#define DRIVER_DESC "iNexio serial touchscreen driver" + +MODULE_AUTHOR("Richard Lemon "); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Definitions & global arrays. + */ + +#define INEXIO_FORMAT_TOUCH_BIT 0x01 +#define INEXIO_FORMAT_LENGTH 5 +#define INEXIO_RESPONSE_BEGIN_BYTE 0x80 + +/* todo: check specs for max length of all responses */ +#define INEXIO_MAX_LENGTH 16 + +#define INEXIO_MIN_XC 0 +#define INEXIO_MAX_XC 0x3fff +#define INEXIO_MIN_YC 0 +#define INEXIO_MAX_YC 0x3fff + +#define INEXIO_GET_XC(data) (((data[1])<<7) | data[2]) +#define INEXIO_GET_YC(data) (((data[3])<<7) | data[4]) +#define INEXIO_GET_TOUCHED(data) (INEXIO_FORMAT_TOUCH_BIT & data[0]) + +/* + * Per-touchscreen data. + */ + +struct inexio { + struct input_dev *dev; + struct serio *serio; + int idx; + unsigned char data[INEXIO_MAX_LENGTH]; + char phys[32]; +}; + +static void inexio_process_data(struct inexio *pinexio) +{ + struct input_dev *dev = pinexio->dev; + + if (INEXIO_FORMAT_LENGTH == ++pinexio->idx) { + input_report_abs(dev, ABS_X, INEXIO_GET_XC(pinexio->data)); + input_report_abs(dev, ABS_Y, INEXIO_GET_YC(pinexio->data)); + input_report_key(dev, BTN_TOUCH, INEXIO_GET_TOUCHED(pinexio->data)); + input_sync(dev); + + pinexio->idx = 0; + } +} + +static irqreturn_t inexio_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct inexio* pinexio = serio_get_drvdata(serio); + + pinexio->data[pinexio->idx] = data; + + if (INEXIO_RESPONSE_BEGIN_BYTE&pinexio->data[0]) + inexio_process_data(pinexio); + else + printk(KERN_DEBUG "inexio.c: unknown/unsynchronized data from device, byte %x\n",pinexio->data[0]); + + return IRQ_HANDLED; +} + +/* + * inexio_disconnect() is the opposite of inexio_connect() + */ + +static void inexio_disconnect(struct serio *serio) +{ + struct inexio* pinexio = serio_get_drvdata(serio); + + input_get_device(pinexio->dev); + input_unregister_device(pinexio->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_put_device(pinexio->dev); + kfree(pinexio); +} + +/* + * inexio_connect() is the routine that is called when someone adds a + * new serio device that supports iNexio protocol and registers it as + * an input device. This is usually accomplished using inputattach. + */ + +static int inexio_connect(struct serio *serio, struct serio_driver *drv) +{ + struct inexio *pinexio; + struct input_dev *input_dev; + int err; + + pinexio = kzalloc(sizeof(struct inexio), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!pinexio || !input_dev) { + err = -ENOMEM; + goto fail1; + } + + pinexio->serio = serio; + pinexio->dev = input_dev; + snprintf(pinexio->phys, sizeof(pinexio->phys), "%s/input0", serio->phys); + + input_dev->name = "iNexio Serial TouchScreen"; + input_dev->phys = pinexio->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_INEXIO; + input_dev->id.product = 0; + input_dev->id.version = 0x0001; + input_dev->dev.parent = &serio->dev; + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(pinexio->dev, ABS_X, INEXIO_MIN_XC, INEXIO_MAX_XC, 0, 0); + input_set_abs_params(pinexio->dev, ABS_Y, INEXIO_MIN_YC, INEXIO_MAX_YC, 0, 0); + + serio_set_drvdata(serio, pinexio); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(pinexio->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(pinexio); + return err; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id inexio_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_INEXIO, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, inexio_serio_ids); + +static struct serio_driver inexio_drv = { + .driver = { + .name = "inexio", + }, + .description = DRIVER_DESC, + .id_table = inexio_serio_ids, + .interrupt = inexio_interrupt, + .connect = inexio_connect, + .disconnect = inexio_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init inexio_init(void) +{ + return serio_register_driver(&inexio_drv); +} + +static void __exit inexio_exit(void) +{ + serio_unregister_driver(&inexio_drv); +} + +module_init(inexio_init); +module_exit(inexio_exit); diff --git a/include/linux/serio.h b/include/linux/serio.h index 95674d97dabd..36c6ab81c7e0 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -212,5 +212,6 @@ static inline void serio_unpin_driver(struct serio *serio) #define SERIO_TAOSEVM 0x34 #define SERIO_FUJITSU 0x35 #define SERIO_ZHENHUA 0x36 +#define SERIO_INEXIO 0x37 #endif -- cgit v1.2.3 From 73422392734bb68c8ff8bc74ce1bbdc32f1b639a Mon Sep 17 00:00:00 2001 From: Claudio Nieder Date: Mon, 7 Jul 2008 11:56:30 -0400 Subject: Input: add driver for Tabletkiosk Sahara TouchIT-213 touchscreen Signed-off-by: Claudio Nieder Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 11 ++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/touchit213.c | 234 +++++++++++++++++++++++++++++++++ include/linux/serio.h | 1 + 4 files changed, 247 insertions(+) create mode 100644 drivers/input/touchscreen/touchit213.c (limited to 'drivers/input/touchscreen/Kconfig') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 4085791e7be2..e57366521572 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -351,4 +351,15 @@ config TOUCHSCREEN_USB_GOTOP bool "GoTop Super_Q2/GogoPen/PenPower tablet device support" if EMBEDDED depends on TOUCHSCREEN_USB_COMPOSITE +config TOUCHSCREEN_TOUCHIT213 + tristate "Sahara TouchIT-213 touchscreen" + select SERIO + help + Say Y here if you have a Sahara TouchIT-213 Tablet PC. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called touchit213. + endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index d63bcdcd28ec..39a804cd80f1 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_TOUCHSCREEN_HP7XX) += jornada720_ts.o obj-$(CONFIG_TOUCHSCREEN_HTCPEN) += htcpen.o obj-$(CONFIG_TOUCHSCREEN_USB_COMPOSITE) += usbtouchscreen.o obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o +obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o diff --git a/drivers/input/touchscreen/touchit213.c b/drivers/input/touchscreen/touchit213.c new file mode 100644 index 000000000000..d1297ba19daf --- /dev/null +++ b/drivers/input/touchscreen/touchit213.c @@ -0,0 +1,234 @@ +/* + * Sahara TouchIT-213 serial touchscreen driver + * + * Copyright (c) 2007-2008 Claudio Nieder + * + * Based on Touchright driver (drivers/input/touchscreen/touchright.c) + * Copyright (c) 2006 Rick Koch + * Copyright (c) 2004 Vojtech Pavlik + * and Dan Streetman + */ + +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define DRIVER_DESC "Sahara TouchIT-213 serial touchscreen driver" + +MODULE_AUTHOR("Claudio Nieder "); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +/* + * Definitions & global arrays. + */ + +/* + * Data is received through COM1 at 9600bit/s,8bit,no parity in packets + * of 5 byte each. + * + * +--------+ +--------+ +--------+ +--------+ +--------+ + * |1000000p| |0xxxxxxx| |0xxxxxxx| |0yyyyyyy| |0yyyyyyy| + * +--------+ +--------+ +--------+ +--------+ +--------+ + * MSB LSB MSB LSB + * + * The value of p is 1 as long as the screen is touched and 0 when + * reporting the location where touching stopped, e.g. where the pen was + * lifted from the screen. + * + * When holding the screen in landscape mode as the BIOS text output is + * presented, x is the horizontal axis with values growing from left to + * right and y is the vertical axis with values growing from top to + * bottom. + * + * When holding the screen in portrait mode with the Sahara logo in its + * correct position, x ist the vertical axis with values growing from + * top to bottom and y is the horizontal axis with values growing from + * right to left. + */ + +#define T213_FORMAT_TOUCH_BIT 0x01 +#define T213_FORMAT_STATUS_BYTE 0x80 +#define T213_FORMAT_STATUS_MASK ~T213_FORMAT_TOUCH_BIT + +/* + * On my Sahara Touch-IT 213 I have observed x values from 0 to 0x7f0 + * and y values from 0x1d to 0x7e9, so the actual measurement is + * probably done with an 11 bit precision. + */ +#define T213_MIN_XC 0 +#define T213_MAX_XC 0x07ff +#define T213_MIN_YC 0 +#define T213_MAX_YC 0x07ff + +/* + * Per-touchscreen data. + */ + +struct touchit213 { + struct input_dev *dev; + struct serio *serio; + int idx; + unsigned char csum; + unsigned char data[5]; + char phys[32]; +}; + +static irqreturn_t touchit213_interrupt(struct serio *serio, + unsigned char data, unsigned int flags) +{ + struct touchit213 *touchit213 = serio_get_drvdata(serio); + struct input_dev *dev = touchit213->dev; + + touchit213->data[touchit213->idx] = data; + + switch (touchit213->idx++) { + case 0: + if ((touchit213->data[0] & T213_FORMAT_STATUS_MASK) != + T213_FORMAT_STATUS_BYTE) { + pr_debug("unsynchronized data: 0x%02x\n", data); + touchit213->idx = 0; + } + break; + + case 4: + touchit213->idx = 0; + input_report_abs(dev, ABS_X, + (touchit213->data[1] << 7) | touchit213->data[2]); + input_report_abs(dev, ABS_Y, + (touchit213->data[3] << 7) | touchit213->data[4]); + input_report_key(dev, BTN_TOUCH, + touchit213->data[0] & T213_FORMAT_TOUCH_BIT); + input_sync(dev); + break; + } + + return IRQ_HANDLED; +} + +/* + * touchit213_disconnect() is the opposite of touchit213_connect() + */ + +static void touchit213_disconnect(struct serio *serio) +{ + struct touchit213 *touchit213 = serio_get_drvdata(serio); + + input_get_device(touchit213->dev); + input_unregister_device(touchit213->dev); + serio_close(serio); + serio_set_drvdata(serio, NULL); + input_put_device(touchit213->dev); + kfree(touchit213); +} + +/* + * touchit213_connect() is the routine that is called when someone adds a + * new serio device that supports the Touchright protocol and registers it as + * an input device. + */ + +static int touchit213_connect(struct serio *serio, struct serio_driver *drv) +{ + struct touchit213 *touchit213; + struct input_dev *input_dev; + int err; + + touchit213 = kzalloc(sizeof(struct touchit213), GFP_KERNEL); + input_dev = input_allocate_device(); + if (!touchit213 || !input_dev) { + err = -ENOMEM; + goto fail1; + } + + touchit213->serio = serio; + touchit213->dev = input_dev; + snprintf(touchit213->phys, sizeof(touchit213->phys), + "%s/input0", serio->phys); + + input_dev->name = "Sahara Touch-iT213 Serial TouchScreen"; + input_dev->phys = touchit213->phys; + input_dev->id.bustype = BUS_RS232; + input_dev->id.vendor = SERIO_TOUCHIT213; + input_dev->id.product = 0; + input_dev->id.version = 0x0100; + input_dev->dev.parent = &serio->dev; + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + input_set_abs_params(touchit213->dev, ABS_X, + T213_MIN_XC, T213_MAX_XC, 0, 0); + input_set_abs_params(touchit213->dev, ABS_Y, + T213_MIN_YC, T213_MAX_YC, 0, 0); + + serio_set_drvdata(serio, touchit213); + + err = serio_open(serio, drv); + if (err) + goto fail2; + + err = input_register_device(touchit213->dev); + if (err) + goto fail3; + + return 0; + + fail3: serio_close(serio); + fail2: serio_set_drvdata(serio, NULL); + fail1: input_free_device(input_dev); + kfree(touchit213); + return err; +} + +/* + * The serio driver structure. + */ + +static struct serio_device_id touchit213_serio_ids[] = { + { + .type = SERIO_RS232, + .proto = SERIO_TOUCHIT213, + .id = SERIO_ANY, + .extra = SERIO_ANY, + }, + { 0 } +}; + +MODULE_DEVICE_TABLE(serio, touchit213_serio_ids); + +static struct serio_driver touchit213_drv = { + .driver = { + .name = "touchit213", + }, + .description = DRIVER_DESC, + .id_table = touchit213_serio_ids, + .interrupt = touchit213_interrupt, + .connect = touchit213_connect, + .disconnect = touchit213_disconnect, +}; + +/* + * The functions for inserting/removing us as a module. + */ + +static int __init touchit213_init(void) +{ + return serio_register_driver(&touchit213_drv); +} + +static void __exit touchit213_exit(void) +{ + serio_unregister_driver(&touchit213_drv); +} + +module_init(touchit213_init); +module_exit(touchit213_exit); diff --git a/include/linux/serio.h b/include/linux/serio.h index 36c6ab81c7e0..48defc4d181e 100644 --- a/include/linux/serio.h +++ b/include/linux/serio.h @@ -213,5 +213,6 @@ static inline void serio_unpin_driver(struct serio *serio) #define SERIO_FUJITSU 0x35 #define SERIO_ZHENHUA 0x36 #define SERIO_INEXIO 0x37 +#define SERIO_TOUCHIT213 0x37 #endif -- cgit v1.2.3 From 72d18a7b9e1a3a9511bae78fc7f0932ae01d5d73 Mon Sep 17 00:00:00 2001 From: Dan Liang Date: Wed, 23 Jul 2008 21:27:25 -0400 Subject: Input: add driver for Atmel integrated touchscreen controller The AT91SAM9RL SoC integrates a Touchscreen Controller which can trigger ADC conversion periodically. Signed-off-by: Justin Waters Signed-off-by: Dan Liang Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 12 ++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/atmel_tsadcc.c | 332 +++++++++++++++++++++++++++++++ 3 files changed, 345 insertions(+) create mode 100644 drivers/input/touchscreen/atmel_tsadcc.c (limited to 'drivers/input/touchscreen/Kconfig') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index e57366521572..6e60a97a234c 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -205,6 +205,18 @@ config TOUCHSCREEN_TOUCHWIN To compile this driver as a module, choose M here: the module will be called touchwin. +config TOUCHSCREEN_ATMEL_TSADCC + tristate "Atmel Touchscreen Interface" + depends on ARCH_AT91SAM9RL + help + Say Y here if you have a 4-wire touchscreen connected to the + ADC Controller on your Atmel SoC (such as the AT91SAM9RL). + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called atmel_tsadcc. + config TOUCHSCREEN_UCB1400 tristate "Philips UCB1400 touchscreen" select AC97_BUS diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 39a804cd80f1..15cf29079489 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -7,6 +7,7 @@ wm97xx-ts-y := wm97xx-core.o obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o +obj-$(CONFIG_TOUCHSCREEN_ATMEL_TSADCC) += atmel_tsadcc.o obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c new file mode 100644 index 000000000000..eee126b19e8b --- /dev/null +++ b/drivers/input/touchscreen/atmel_tsadcc.c @@ -0,0 +1,332 @@ +/* + * Atmel Touch Screen Driver + * + * Copyright (c) 2008 ATMEL + * Copyright (c) 2008 Dan Liang + * Copyright (c) 2008 TimeSys Corporation + * Copyright (c) 2008 Justin Waters + * + * Based on touchscreen code from Atmel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register definitions based on AT91SAM9RL64 preliminary draft datasheet */ + +#define ATMEL_TSADCC_CR 0x00 /* Control register */ +#define ATMEL_TSADCC_SWRST (1 << 0) /* Software Reset*/ +#define ATMEL_TSADCC_START (1 << 1) /* Start conversion */ + +#define ATMEL_TSADCC_MR 0x04 /* Mode register */ +#define ATMEL_TSADCC_TSAMOD (3 << 0) /* ADC mode */ +#define ATMEL_TSADCC_TSAMOD_ADC_ONLY_MODE (0x0) /* ADC Mode */ +#define ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE (0x1) /* Touch Screen Only Mode */ +#define ATMEL_TSADCC_LOWRES (1 << 4) /* Resolution selection */ +#define ATMEL_TSADCC_SLEEP (1 << 5) /* Sleep mode */ +#define ATMEL_TSADCC_PENDET (1 << 6) /* Pen Detect selection */ +#define ATMEL_TSADCC_PRESCAL (0x3f << 8) /* Prescalar Rate Selection */ +#define ATMEL_TSADCC_STARTUP (0x7f << 16) /* Start Up time */ +#define ATMEL_TSADCC_SHTIM (0xf << 24) /* Sample & Hold time */ +#define ATMEL_TSADCC_PENDBC (0xf << 28) /* Pen Detect debouncing time */ + +#define ATMEL_TSADCC_TRGR 0x08 /* Trigger register */ +#define ATMEL_TSADCC_TRGMOD (7 << 0) /* Trigger mode */ +#define ATMEL_TSADCC_TRGMOD_NONE (0 << 0) +#define ATMEL_TSADCC_TRGMOD_EXT_RISING (1 << 0) +#define ATMEL_TSADCC_TRGMOD_EXT_FALLING (2 << 0) +#define ATMEL_TSADCC_TRGMOD_EXT_ANY (3 << 0) +#define ATMEL_TSADCC_TRGMOD_PENDET (4 << 0) +#define ATMEL_TSADCC_TRGMOD_PERIOD (5 << 0) +#define ATMEL_TSADCC_TRGMOD_CONTINUOUS (6 << 0) +#define ATMEL_TSADCC_TRGPER (0xffff << 16) /* Trigger period */ + +#define ATMEL_TSADCC_TSR 0x0C /* Touch Screen register */ +#define ATMEL_TSADCC_TSFREQ (0xf << 0) /* TS Frequency in Interleaved mode */ +#define ATMEL_TSADCC_TSSHTIM (0xf << 24) /* Sample & Hold time */ + +#define ATMEL_TSADCC_CHER 0x10 /* Channel Enable register */ +#define ATMEL_TSADCC_CHDR 0x14 /* Channel Disable register */ +#define ATMEL_TSADCC_CHSR 0x18 /* Channel Status register */ +#define ATMEL_TSADCC_CH(n) (1 << (n)) /* Channel number */ + +#define ATMEL_TSADCC_SR 0x1C /* Status register */ +#define ATMEL_TSADCC_EOC(n) (1 << ((n)+0)) /* End of conversion for channel N */ +#define ATMEL_TSADCC_OVRE(n) (1 << ((n)+8)) /* Overrun error for channel N */ +#define ATMEL_TSADCC_DRDY (1 << 16) /* Data Ready */ +#define ATMEL_TSADCC_GOVRE (1 << 17) /* General Overrun Error */ +#define ATMEL_TSADCC_ENDRX (1 << 18) /* End of RX Buffer */ +#define ATMEL_TSADCC_RXBUFF (1 << 19) /* TX Buffer full */ +#define ATMEL_TSADCC_PENCNT (1 << 20) /* Pen contact */ +#define ATMEL_TSADCC_NOCNT (1 << 21) /* No contact */ + +#define ATMEL_TSADCC_LCDR 0x20 /* Last Converted Data register */ +#define ATMEL_TSADCC_DATA (0x3ff << 0) /* Channel data */ + +#define ATMEL_TSADCC_IER 0x24 /* Interrupt Enable register */ +#define ATMEL_TSADCC_IDR 0x28 /* Interrupt Disable register */ +#define ATMEL_TSADCC_IMR 0x2C /* Interrupt Mask register */ +#define ATMEL_TSADCC_CDR0 0x30 /* Channel Data 0 */ +#define ATMEL_TSADCC_CDR1 0x34 /* Channel Data 1 */ +#define ATMEL_TSADCC_CDR2 0x38 /* Channel Data 2 */ +#define ATMEL_TSADCC_CDR3 0x3C /* Channel Data 3 */ +#define ATMEL_TSADCC_CDR4 0x40 /* Channel Data 4 */ +#define ATMEL_TSADCC_CDR5 0x44 /* Channel Data 5 */ + +#define ADC_CLOCK 1000000 + +struct atmel_tsadcc { + struct input_dev *input; + char phys[32]; + struct clk *clk; + int irq; +}; + +static void __iomem *tsc_base; + +#define atmel_tsadcc_read(reg) __raw_readl(tsc_base + (reg)) +#define atmel_tsadcc_write(reg, val) __raw_writel((val), tsc_base + (reg)) + +static irqreturn_t atmel_tsadcc_interrupt(int irq, void *dev) +{ + struct input_dev *input_dev = ((struct atmel_tsadcc *)dev)->input; + + unsigned int absx; + unsigned int absy; + unsigned int status; + unsigned int reg; + + status = atmel_tsadcc_read(ATMEL_TSADCC_SR); + status &= atmel_tsadcc_read(ATMEL_TSADCC_IMR); + + if (status & ATMEL_TSADCC_NOCNT) { + /* Contact lost */ + reg = atmel_tsadcc_read(ATMEL_TSADCC_MR) | ATMEL_TSADCC_PENDBC; + + atmel_tsadcc_write(ATMEL_TSADCC_MR, reg); + atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE); + atmel_tsadcc_write(ATMEL_TSADCC_IDR, + ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT); + atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT); + + input_report_key(input_dev, BTN_TOUCH, 0); + input_sync(input_dev); + + } else if (status & ATMEL_TSADCC_PENCNT) { + /* Pen detected */ + reg = atmel_tsadcc_read(ATMEL_TSADCC_MR); + reg &= ~ATMEL_TSADCC_PENDBC; + + atmel_tsadcc_write(ATMEL_TSADCC_IDR, ATMEL_TSADCC_PENCNT); + atmel_tsadcc_write(ATMEL_TSADCC_MR, reg); + atmel_tsadcc_write(ATMEL_TSADCC_IER, + ATMEL_TSADCC_EOC(3) | ATMEL_TSADCC_NOCNT); + atmel_tsadcc_write(ATMEL_TSADCC_TRGR, + ATMEL_TSADCC_TRGMOD_PERIOD | (0x0FFF << 16)); + + } else if (status & ATMEL_TSADCC_EOC(3)) { + /* Conversion finished */ + + absx = atmel_tsadcc_read(ATMEL_TSADCC_CDR3) << 10; + absx /= atmel_tsadcc_read(ATMEL_TSADCC_CDR2); + + absy = atmel_tsadcc_read(ATMEL_TSADCC_CDR1) << 10; + absy /= atmel_tsadcc_read(ATMEL_TSADCC_CDR0); + + input_report_abs(input_dev, ABS_X, absx); + input_report_abs(input_dev, ABS_Y, absy); + input_report_key(input_dev, BTN_TOUCH, 1); + input_sync(input_dev); + } + + return IRQ_HANDLED; +} + +/* + * The functions for inserting/removing us as a module. + */ + +static int __devinit atmel_tsadcc_probe(struct platform_device *pdev) +{ + struct atmel_tsadcc *ts_dev; + struct input_dev *input_dev; + struct resource *res; + int err = 0; + unsigned int prsc; + unsigned int reg; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "no mmio resource defined.\n"); + return -ENXIO; + } + + /* Allocate memory for device */ + ts_dev = kzalloc(sizeof(struct atmel_tsadcc), GFP_KERNEL); + if (!ts_dev) { + dev_err(&pdev->dev, "failed to allocate memory.\n"); + return -ENOMEM; + } + platform_set_drvdata(pdev, ts_dev); + + input_dev = input_allocate_device(); + if (!input_dev) { + dev_err(&pdev->dev, "failed to allocate input device.\n"); + err = -EBUSY; + goto err_free_mem; + } + + ts_dev->irq = platform_get_irq(pdev, 0); + if (ts_dev->irq < 0) { + dev_err(&pdev->dev, "no irq ID is designated.\n"); + err = -ENODEV; + goto err_free_dev; + } + + if (!request_mem_region(res->start, res->end - res->start + 1, + "atmel tsadcc regs")) { + dev_err(&pdev->dev, "resources is unavailable.\n"); + err = -EBUSY; + goto err_free_dev; + } + + tsc_base = ioremap(res->start, res->end - res->start + 1); + if (!tsc_base) { + dev_err(&pdev->dev, "failed to map registers.\n"); + err = -ENOMEM; + goto err_release_mem; + } + + err = request_irq(ts_dev->irq, atmel_tsadcc_interrupt, IRQF_DISABLED, + pdev->dev.driver->name, ts_dev); + if (err) { + dev_err(&pdev->dev, "failed to allocate irq.\n"); + goto err_unmap_regs; + } + + ts_dev->clk = clk_get(&pdev->dev, "tsc_clk"); + if (IS_ERR(ts_dev->clk)) { + dev_err(&pdev->dev, "failed to get ts_clk\n"); + err = PTR_ERR(ts_dev->clk); + goto err_free_irq; + } + + ts_dev->input = input_dev; + + snprintf(ts_dev->phys, sizeof(ts_dev->phys), + "%s/input0", pdev->dev.bus_id); + + input_dev->name = "atmel touch screen controller"; + input_dev->phys = ts_dev->phys; + input_dev->dev.parent = &pdev->dev; + + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); + + input_set_abs_params(input_dev, ABS_X, 0, 0x3FF, 0, 0); + input_set_abs_params(input_dev, ABS_Y, 0, 0x3FF, 0, 0); + + /* clk_enable() always returns 0, no need to check it */ + clk_enable(ts_dev->clk); + + prsc = clk_get_rate(ts_dev->clk); + dev_info(&pdev->dev, "Master clock is set at: %d Hz\n", prsc); + + prsc = prsc / ADC_CLOCK / 2 - 1; + + reg = ATMEL_TSADCC_TSAMOD_TS_ONLY_MODE | + ((0x00 << 5) & ATMEL_TSADCC_SLEEP) | /* Normal Mode */ + ((0x01 << 6) & ATMEL_TSADCC_PENDET) | /* Enable Pen Detect */ + ((prsc << 8) & ATMEL_TSADCC_PRESCAL) | /* PRESCAL */ + ((0x13 << 16) & ATMEL_TSADCC_STARTUP) | /* STARTUP */ + ((0x0F << 28) & ATMEL_TSADCC_PENDBC); /* PENDBC */ + + atmel_tsadcc_write(ATMEL_TSADCC_CR, ATMEL_TSADCC_SWRST); + atmel_tsadcc_write(ATMEL_TSADCC_MR, reg); + atmel_tsadcc_write(ATMEL_TSADCC_TRGR, ATMEL_TSADCC_TRGMOD_NONE); + atmel_tsadcc_write(ATMEL_TSADCC_TSR, (0x3 << 24) & ATMEL_TSADCC_TSSHTIM); + + atmel_tsadcc_read(ATMEL_TSADCC_SR); + atmel_tsadcc_write(ATMEL_TSADCC_IER, ATMEL_TSADCC_PENCNT); + + /* All went ok, so register to the input system */ + err = input_register_device(input_dev); + if (err) + goto err_fail; + + return 0; + +err_fail: + clk_disable(ts_dev->clk); + clk_put(ts_dev->clk); +err_free_irq: + free_irq(ts_dev->irq, ts_dev); +err_unmap_regs: + iounmap(tsc_base); +err_release_mem: + release_mem_region(res->start, res->end - res->start + 1); +err_free_dev: + input_free_device(ts_dev->input); +err_free_mem: + kfree(ts_dev); + return err; +} + +static int __devexit atmel_tsadcc_remove(struct platform_device *pdev) +{ + struct atmel_tsadcc *ts_dev = dev_get_drvdata(&pdev->dev); + struct resource *res; + + free_irq(ts_dev->irq, ts_dev); + + input_unregister_device(ts_dev->input); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + iounmap(tsc_base); + release_mem_region(res->start, res->end - res->start + 1); + + clk_disable(ts_dev->clk); + clk_put(ts_dev->clk); + + kfree(ts_dev); + + return 0; +} + +static struct platform_driver atmel_tsadcc_driver = { + .probe = atmel_tsadcc_probe, + .remove = __devexit_p(atmel_tsadcc_remove), + .driver = { + .name = "atmel_tsadcc", + }, +}; + +static int __init atmel_tsadcc_init(void) +{ + return platform_driver_register(&atmel_tsadcc_driver); +} + +static void __exit atmel_tsadcc_exit(void) +{ + platform_driver_unregister(&atmel_tsadcc_driver); +} + +module_init(atmel_tsadcc_init); +module_exit(atmel_tsadcc_exit); + + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Atmel TouchScreen Driver"); +MODULE_AUTHOR("Dan Liang "); + -- cgit v1.2.3