[linux-2.6-block.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)
{
	unsigned short joy0dat, potgor;
	int nx, ny, dx, dy;

	joy0dat = amiga_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 = amiga_custom.potgor;

	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 = amiga_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)
{
	int err;

	if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(AMI_MOUSE))
		return -ENODEV;

	amimouse_dev = input_allocate_device();
	if (!amimouse_dev)
		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_MASK(EV_KEY) | BIT_MASK(EV_REL);
	amimouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
	amimouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
	amimouse_dev->open = amimouse_open;
	amimouse_dev->close = amimouse_close;

	err = input_register_device(amimouse_dev);
	if (err) {
		input_free_device(amimouse_dev);
		return err;
	}

	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	38
7d12e780	39	static irqreturn_t amimouse_interrupt(int irq, void *dummy)
1da177e4 LT	40	{
	41	unsigned short joy0dat, potgor;
	42	int nx, ny, dx, dy;
	43
b4290a23	44	joy0dat = amiga_custom.joy0dat;
1da177e4 LT	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
b4290a23	60	potgor = amiga_custom.potgor;
1da177e4	61
2e5b636b DT	62	input_report_rel(amimouse_dev, REL_X, dx);
2e5b636b DT	63	input_report_rel(amimouse_dev, REL_Y, dy);
1da177e4	64
2e5b636b DT	65	input_report_key(amimouse_dev, BTN_LEFT, ciaa.pra & 0x40);
	66	input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
	67	input_report_key(amimouse_dev, BTN_RIGHT, potgor & 0x0400);
1da177e4	68
2e5b636b	69	input_sync(amimouse_dev);
1da177e4 LT	70
	71	return IRQ_HANDLED;
	72	}
	73
	74	static int amimouse_open(struct input_dev *dev)
	75	{
	76	unsigned short joy0dat;
	77
b4290a23	78	joy0dat = amiga_custom.joy0dat;
1da177e4 LT	79
	80	amimouse_lastx = joy0dat & 0xff;
	81	amimouse_lasty = joy0dat >> 8;
	82
	83	if (request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse", amimouse_interrupt)) {
1da177e4 LT	84	printk(KERN_ERR "amimouse.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
	85	return -EBUSY;
	86	}
	87
	88	return 0;
	89	}
	90
	91	static void amimouse_close(struct input_dev *dev)
	92	{
3108d42d	93	free_irq(IRQ_AMIGA_VERTB, amimouse_interrupt);
1da177e4 LT	94	}
	95
	96	static int __init amimouse_init(void)
	97	{
72155615 DT	98	int err;
72155615 DT	99
1da177e4 LT	100	if (!MACH_IS_AMIGA \|\| !AMIGAHW_PRESENT(AMI_MOUSE))
	101	return -ENODEV;
	102
72155615 DT	103	amimouse_dev = input_allocate_device();
72155615 DT	104	if (!amimouse_dev)
2e5b636b DT	105	return -ENOMEM;
	106
	107	amimouse_dev->name = "Amiga mouse";
	108	amimouse_dev->phys = "amimouse/input0";
	109	amimouse_dev->id.bustype = BUS_AMIGA;
	110	amimouse_dev->id.vendor = 0x0001;
	111	amimouse_dev->id.product = 0x0002;
	112	amimouse_dev->id.version = 0x0100;
1da177e4	113
7b19ada2 JS	114	amimouse_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	115	amimouse_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
	116	amimouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	117	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
2e5b636b DT	118	amimouse_dev->open = amimouse_open;
2e5b636b DT	119	amimouse_dev->close = amimouse_close;
1da177e4	120
72155615 DT	121	err = input_register_device(amimouse_dev);
	122	if (err) {
	123	input_free_device(amimouse_dev);
	124	return err;
	125	}
1da177e4	126
1da177e4 LT	127	return 0;
	128	}
	129
	130	static void __exit amimouse_exit(void)
	131	{
2e5b636b	132	input_unregister_device(amimouse_dev);
1da177e4 LT	133	}
	134
	135	module_init(amimouse_init);
	136	module_exit(amimouse_exit);