diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/touchscreen/touchit213.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/touchscreen/touchit213.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/ANDROID_3.4.5/drivers/input/touchscreen/touchit213.c b/ANDROID_3.4.5/drivers/input/touchscreen/touchit213.c deleted file mode 100644 index d1297ba1..00000000 --- a/ANDROID_3.4.5/drivers/input/touchscreen/touchit213.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Sahara TouchIT-213 serial touchscreen driver - * - * Copyright (c) 2007-2008 Claudio Nieder <private@claudio.ch> - * - * Based on Touchright driver (drivers/input/touchscreen/touchright.c) - * Copyright (c) 2006 Rick Koch <n1gp@hotmail.com> - * Copyright (c) 2004 Vojtech Pavlik - * and Dan Streetman <ddstreet@ieee.org> - */ - -/* - * 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 <linux/errno.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/input.h> -#include <linux/serio.h> -#include <linux/init.h> - -#define DRIVER_DESC "Sahara TouchIT-213 serial touchscreen driver" - -MODULE_AUTHOR("Claudio Nieder <private@claudio.ch>"); -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); |