diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/touchscreen/mtouch.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/touchscreen/mtouch.c | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/ANDROID_3.4.5/drivers/input/touchscreen/mtouch.c b/ANDROID_3.4.5/drivers/input/touchscreen/mtouch.c deleted file mode 100644 index 90772284..00000000 --- a/ANDROID_3.4.5/drivers/input/touchscreen/mtouch.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * MicroTouch (3M) serial touchscreen driver - * - * Copyright (c) 2004 Vojtech Pavlik - */ - -/* - * 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. - */ - -/* - * 2005/02/19 Dan Streetman <ddstreet@ieee.org> - * Copied elo.c and edited for MicroTouch protocol - */ - -#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 "MicroTouch serial touchscreen driver" - -MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); - -/* - * Definitions & global arrays. - */ - -#define MTOUCH_FORMAT_TABLET_STATUS_BIT 0x80 -#define MTOUCH_FORMAT_TABLET_TOUCH_BIT 0x40 -#define MTOUCH_FORMAT_TABLET_LENGTH 5 -#define MTOUCH_RESPONSE_BEGIN_BYTE 0x01 -#define MTOUCH_RESPONSE_END_BYTE 0x0d - -/* todo: check specs for max length of all responses */ -#define MTOUCH_MAX_LENGTH 16 - -#define MTOUCH_MIN_XC 0 -#define MTOUCH_MAX_XC 0x3fff -#define MTOUCH_MIN_YC 0 -#define MTOUCH_MAX_YC 0x3fff - -#define MTOUCH_GET_XC(data) (((data[2])<<7) | data[1]) -#define MTOUCH_GET_YC(data) (((data[4])<<7) | data[3]) -#define MTOUCH_GET_TOUCHED(data) (MTOUCH_FORMAT_TABLET_TOUCH_BIT & data[0]) - -/* - * Per-touchscreen data. - */ - -struct mtouch { - struct input_dev *dev; - struct serio *serio; - int idx; - unsigned char data[MTOUCH_MAX_LENGTH]; - char phys[32]; -}; - -static void mtouch_process_format_tablet(struct mtouch *mtouch) -{ - struct input_dev *dev = mtouch->dev; - - if (MTOUCH_FORMAT_TABLET_LENGTH == ++mtouch->idx) { - input_report_abs(dev, ABS_X, MTOUCH_GET_XC(mtouch->data)); - input_report_abs(dev, ABS_Y, MTOUCH_MAX_YC - MTOUCH_GET_YC(mtouch->data)); - input_report_key(dev, BTN_TOUCH, MTOUCH_GET_TOUCHED(mtouch->data)); - input_sync(dev); - - mtouch->idx = 0; - } -} - -static void mtouch_process_response(struct mtouch *mtouch) -{ - if (MTOUCH_RESPONSE_END_BYTE == mtouch->data[mtouch->idx++]) { - /* FIXME - process response */ - mtouch->idx = 0; - } else if (MTOUCH_MAX_LENGTH == mtouch->idx) { - printk(KERN_ERR "mtouch.c: too many response bytes\n"); - mtouch->idx = 0; - } -} - -static irqreturn_t mtouch_interrupt(struct serio *serio, - unsigned char data, unsigned int flags) -{ - struct mtouch* mtouch = serio_get_drvdata(serio); - - mtouch->data[mtouch->idx] = data; - - if (MTOUCH_FORMAT_TABLET_STATUS_BIT & mtouch->data[0]) - mtouch_process_format_tablet(mtouch); - else if (MTOUCH_RESPONSE_BEGIN_BYTE == mtouch->data[0]) - mtouch_process_response(mtouch); - else - printk(KERN_DEBUG "mtouch.c: unknown/unsynchronized data from device, byte %x\n",mtouch->data[0]); - - return IRQ_HANDLED; -} - -/* - * mtouch_disconnect() is the opposite of mtouch_connect() - */ - -static void mtouch_disconnect(struct serio *serio) -{ - struct mtouch* mtouch = serio_get_drvdata(serio); - - input_get_device(mtouch->dev); - input_unregister_device(mtouch->dev); - serio_close(serio); - serio_set_drvdata(serio, NULL); - input_put_device(mtouch->dev); - kfree(mtouch); -} - -/* - * mtouch_connect() is the routine that is called when someone adds a - * new serio device that supports MicroTouch (Format Tablet) protocol and registers it as - * an input device. - */ - -static int mtouch_connect(struct serio *serio, struct serio_driver *drv) -{ - struct mtouch *mtouch; - struct input_dev *input_dev; - int err; - - mtouch = kzalloc(sizeof(struct mtouch), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!mtouch || !input_dev) { - err = -ENOMEM; - goto fail1; - } - - mtouch->serio = serio; - mtouch->dev = input_dev; - snprintf(mtouch->phys, sizeof(mtouch->phys), "%s/input0", serio->phys); - - input_dev->name = "MicroTouch Serial TouchScreen"; - input_dev->phys = mtouch->phys; - input_dev->id.bustype = BUS_RS232; - input_dev->id.vendor = SERIO_MICROTOUCH; - 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(mtouch->dev, ABS_X, MTOUCH_MIN_XC, MTOUCH_MAX_XC, 0, 0); - input_set_abs_params(mtouch->dev, ABS_Y, MTOUCH_MIN_YC, MTOUCH_MAX_YC, 0, 0); - - serio_set_drvdata(serio, mtouch); - - err = serio_open(serio, drv); - if (err) - goto fail2; - - err = input_register_device(mtouch->dev); - if (err) - goto fail3; - - return 0; - - fail3: serio_close(serio); - fail2: serio_set_drvdata(serio, NULL); - fail1: input_free_device(input_dev); - kfree(mtouch); - return err; -} - -/* - * The serio driver structure. - */ - -static struct serio_device_id mtouch_serio_ids[] = { - { - .type = SERIO_RS232, - .proto = SERIO_MICROTOUCH, - .id = SERIO_ANY, - .extra = SERIO_ANY, - }, - { 0 } -}; - -MODULE_DEVICE_TABLE(serio, mtouch_serio_ids); - -static struct serio_driver mtouch_drv = { - .driver = { - .name = "mtouch", - }, - .description = DRIVER_DESC, - .id_table = mtouch_serio_ids, - .interrupt = mtouch_interrupt, - .connect = mtouch_connect, - .disconnect = mtouch_disconnect, -}; - -/* - * The functions for inserting/removing us as a module. - */ - -static int __init mtouch_init(void) -{ - return serio_register_driver(&mtouch_drv); -} - -static void __exit mtouch_exit(void) -{ - serio_unregister_driver(&mtouch_drv); -} - -module_init(mtouch_init); -module_exit(mtouch_exit); |