[deliverable/linux.git] / drivers / input / mouse / amimouse.c

/*
 *  Amiga mouse driver for Linux/m68k
 *
 *  Copyright (c) 2000-2002 Vojtech Pavlik
 *
 *  Based on the work of:
 *	Michael Rausch		James Banks
 *	Matther Dillon		David Giller
 *	Nathan Laredo		Linus Torvalds
 *	Johan Myreen		Jes Sorensen
 *	Russell King
 */

/*
 * 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/module.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/interrupt.h>

#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/system.h>
#include <asm/uaccess.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_DESCRIPTION("Amiga mouse driver");
MODULE_LICENSE("GPL");

static int amimouse_lastx, amimouse_lasty;
static struct input_dev *amimouse_dev;

static irqreturn_t amimouse_interrupt(int irq, void *dummy, struct pt_regs *fp)
{
	unsigned short joy0dat, potgor;
	int nx, ny, dx, dy;

	joy0dat = custom.joy0dat;

	nx = joy0dat & 0xff;
	ny = joy0dat >> 8;

	dx = nx - amimouse_lastx;
	dy = ny - amimouse_lasty;

	if (dx < -127) dx = (256 + nx) - amimouse_lastx;
	if (dx >  127) dx = (nx - 256) - amimouse_lastx;
	if (dy < -127) dy = (256 + ny) - amimouse_lasty;
	if (dy >  127) dy = (ny - 256) - amimouse_lasty;

	amimouse_lastx = nx;
	amimouse_lasty = ny;

	potgor = custom.potgor;

	input_regs(amimouse_dev, fp);

	input_report_rel(amimouse_dev, REL_X, dx);
	input_report_rel(amimouse_dev, REL_Y, dy);

	input_report_key(amimouse_dev, BTN_LEFT,   ciaa.pra & 0x40);
	input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
	input_report_key(amimouse_dev, BTN_RIGHT,  potgor & 0x0400);

	input_sync(amimouse_dev);

	return IRQ_HANDLED;
}

static int amimouse_open(struct input_dev *dev)
{
	unsigned short joy0dat;

	joy0dat = custom.joy0dat;

	amimouse_lastx = joy0dat & 0xff;
	amimouse_lasty = joy0dat >> 8;

	if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) {
                printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
                return -EBUSY;
        }

        return 0;
}

static void amimouse_close(struct input_dev *dev)
{
	free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt);
}

static int __init amimouse_init(void)
{
	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE))
		return -ENODEV;

	if (!(amimouse_dev = input_allocate_device()))
		return -ENOMEM;

	amimouse_dev->name = "Amiga mouse";
	amimouse_dev->phys = "amimouse/input0";
	amimouse_dev->id.bustype = BUS_AMIGA;
	amimouse_dev->id.vendor = 0x0001;
	amimouse_dev->id.product = 0x0002;
	amimouse_dev->id.version = 0x0100;

	amimouse_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
	amimouse_dev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
	amimouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
	amimouse_dev->open = amimouse_open;
	amimouse_dev->close = amimouse_close;

	input_register_device(amimouse_dev);

	return 0;
}

static void __exit amimouse_exit(void)
{
        input_unregister_device(amimouse_dev);
}

module_init(amimouse_init);
module_exit(amimouse_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Amiga mouse driver for Linux/m68k
	3	*
	4	* Copyright (c) 2000-2002 Vojtech Pavlik
	5	*
	6	* Based on the work of:
	7	* Michael Rausch James Banks
	8	* Matther Dillon David Giller
	9	* Nathan Laredo Linus Torvalds
	10	* Johan Myreen Jes Sorensen
	11	* Russell King
	12	*/
	13
	14	/*
	15	* This program is free software; you can redistribute it and/or modify it
	16	* under the terms of the GNU General Public License version 2 as published by
	17	* the Free Software Foundation
	18	*/
	19
	20	#include <linux/module.h>
	21	#include <linux/init.h>
	22	#include <linux/input.h>
	23	#include <linux/interrupt.h>
	24
	25	#include <asm/irq.h>
	26	#include <asm/setup.h>
	27	#include <asm/system.h>
	28	#include <asm/uaccess.h>
	29	#include <asm/amigahw.h>
	30	#include <asm/amigaints.h>
	31
	32	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	33	MODULE_DESCRIPTION("Amiga mouse driver");
	34	MODULE_LICENSE("GPL");
	35
1da177e4	36	static int amimouse_lastx, amimouse_lasty;
2e5b636b	37	static struct input_dev *amimouse_dev;
1da177e4 LT	38
	39	static irqreturn_t amimouse_interrupt(int irq, void dummy, struct pt_regs fp)
	40	{
	41	unsigned short joy0dat, potgor;
	42	int nx, ny, dx, dy;
	43
	44	joy0dat = custom.joy0dat;
	45
	46	nx = joy0dat & 0xff;
	47	ny = joy0dat >> 8;
	48
	49	dx = nx - amimouse_lastx;
	50	dy = ny - amimouse_lasty;
	51
	52	if (dx < -127) dx = (256 + nx) - amimouse_lastx;
	53	if (dx > 127) dx = (nx - 256) - amimouse_lastx;
	54	if (dy < -127) dy = (256 + ny) - amimouse_lasty;
	55	if (dy > 127) dy = (ny - 256) - amimouse_lasty;
	56
	57	amimouse_lastx = nx;
	58	amimouse_lasty = ny;
	59
	60	potgor = custom.potgor;
	61
2e5b636b	62	input_regs(amimouse_dev, fp);
1da177e4	63
2e5b636b DT	64	input_report_rel(amimouse_dev, REL_X, dx);
2e5b636b DT	65	input_report_rel(amimouse_dev, REL_Y, dy);
1da177e4	66
2e5b636b DT	67	input_report_key(amimouse_dev, BTN_LEFT, ciaa.pra & 0x40);
	68	input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
	69	input_report_key(amimouse_dev, BTN_RIGHT, potgor & 0x0400);
1da177e4	70
2e5b636b	71	input_sync(amimouse_dev);
1da177e4 LT	72
	73	return IRQ_HANDLED;
	74	}
	75
	76	static int amimouse_open(struct input_dev *dev)
	77	{
	78	unsigned short joy0dat;
	79
1da177e4 LT	80	joy0dat = custom.joy0dat;
	81
	82	amimouse_lastx = joy0dat & 0xff;
	83	amimouse_lasty = joy0dat >> 8;
	84
	85	if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) {
1da177e4 LT	86	printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
	87	return -EBUSY;
	88	}
	89
	90	return 0;
	91	}
	92
	93	static void amimouse_close(struct input_dev *dev)
	94	{
3108d42d	95	free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt);
1da177e4 LT	96	}
	97
	98	static int __init amimouse_init(void)
	99	{
	100	if (!MACH_IS_AMIGA \|\| !AMIGAHW_PRESENT(AMI_MOUSE))
	101	return -ENODEV;
	102
2e5b636b DT	103	if (!(amimouse_dev = input_allocate_device()))
	104	return -ENOMEM;
	105
	106	amimouse_dev->name = "Amiga mouse";
	107	amimouse_dev->phys = "amimouse/input0";
	108	amimouse_dev->id.bustype = BUS_AMIGA;
	109	amimouse_dev->id.vendor = 0x0001;
	110	amimouse_dev->id.product = 0x0002;
	111	amimouse_dev->id.version = 0x0100;
1da177e4	112
2e5b636b DT	113	amimouse_dev->evbit[0] = BIT(EV_KEY) \| BIT(EV_REL);
	114	amimouse_dev->relbit[0] = BIT(REL_X) \| BIT(REL_Y);
	115	amimouse_dev->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) \| BIT(BTN_MIDDLE) \| BIT(BTN_RIGHT);
	116	amimouse_dev->open = amimouse_open;
	117	amimouse_dev->close = amimouse_close;
1da177e4	118
2e5b636b	119	input_register_device(amimouse_dev);
1da177e4	120
1da177e4 LT	121	return 0;
	122	}
	123
	124	static void __exit amimouse_exit(void)
	125	{
2e5b636b	126	input_unregister_device(amimouse_dev);
1da177e4 LT	127	}
	128
	129	module_init(amimouse_init);
	130	module_exit(amimouse_exit);