[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 <linux/platform_device.h>

#include <asm/irq.h>
#include <asm/setup.h>
#include <linux/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 irqreturn_t amimouse_interrupt(int irq, void *data)
{
	struct input_dev *dev = data;
	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(dev, REL_X, dx);
	input_report_rel(dev, REL_Y, dy);

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

	input_sync(dev);

	return IRQ_HANDLED;
}

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

	joy0dat = amiga_custom.joy0dat;

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

	error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse",
			    dev);
	if (error)
		dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB);

	return error;
}

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

static int __init amimouse_probe(struct platform_device *pdev)
{
	int err;
	struct input_dev *dev;

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

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

	dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
	dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
	dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
	dev->open = amimouse_open;
	dev->close = amimouse_close;
	dev->dev.parent = &pdev->dev;

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

	platform_set_drvdata(pdev, dev);

	return 0;
}

static int __exit amimouse_remove(struct platform_device *pdev)
{
	struct input_dev *dev = platform_get_drvdata(pdev);

	input_unregister_device(dev);
	return 0;
}

static struct platform_driver amimouse_driver = {
	.remove = __exit_p(amimouse_remove),
	.driver   = {
		.name	= "amiga-mouse",
	},
};

module_platform_driver_probe(amimouse_driver, amimouse_probe);

MODULE_ALIAS("platform:amiga-mouse");
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>
314c926f	24	#include <linux/platform_device.h>
1da177e4 LT	25
	26	#include <asm/irq.h>
	27	#include <asm/setup.h>
7c0f6ba6	28	#include <linux/uaccess.h>
1da177e4 LT	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;
1da177e4	37
314c926f	38	static irqreturn_t amimouse_interrupt(int irq, void *data)
1da177e4	39	{
314c926f	40	struct input_dev *dev = data;
1da177e4 LT	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
314c926f GU	62	input_report_rel(dev, REL_X, dx);
314c926f GU	63	input_report_rel(dev, REL_Y, dy);
1da177e4	64
314c926f GU	65	input_report_key(dev, BTN_LEFT, ciaa.pra & 0x40);
	66	input_report_key(dev, BTN_MIDDLE, potgor & 0x0100);
	67	input_report_key(dev, BTN_RIGHT, potgor & 0x0400);
1da177e4	68
314c926f	69	input_sync(dev);
1da177e4 LT	70
	71	return IRQ_HANDLED;
	72	}
	73
	74	static int amimouse_open(struct input_dev *dev)
	75	{
	76	unsigned short joy0dat;
314c926f	77	int error;
1da177e4	78
b4290a23	79	joy0dat = amiga_custom.joy0dat;
1da177e4 LT	80
	81	amimouse_lastx = joy0dat & 0xff;
	82	amimouse_lasty = joy0dat >> 8;
	83
314c926f GU	84	error = request_irq(IRQ_AMIGA_VERTB, amimouse_interrupt, 0, "amimouse",
	85	dev);
	86	if (error)
	87	dev_err(&dev->dev, "Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
1da177e4	88
314c926f	89	return error;
1da177e4 LT	90	}
	91
	92	static void amimouse_close(struct input_dev *dev)
	93	{
314c926f	94	free_irq(IRQ_AMIGA_VERTB, dev);
1da177e4 LT	95	}
1da177e4 LT	96
314c926f	97	static int __init amimouse_probe(struct platform_device *pdev)
1da177e4	98	{
72155615	99	int err;
314c926f	100	struct input_dev *dev;
72155615	101
314c926f GU	102	dev = input_allocate_device();
314c926f GU	103	if (!dev)
2e5b636b DT	104	return -ENOMEM;
2e5b636b DT	105
314c926f GU	106	dev->name = pdev->name;
	107	dev->phys = "amimouse/input0";
	108	dev->id.bustype = BUS_AMIGA;
	109	dev->id.vendor = 0x0001;
	110	dev->id.product = 0x0002;
	111	dev->id.version = 0x0100;
1da177e4	112
314c926f GU	113	dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	114	dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
	115	dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
7b19ada2	116	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
314c926f GU	117	dev->open = amimouse_open;
	118	dev->close = amimouse_close;
	119	dev->dev.parent = &pdev->dev;
1da177e4	120
314c926f	121	err = input_register_device(dev);
72155615	122	if (err) {
314c926f	123	input_free_device(dev);
72155615 DT	124	return err;
72155615 DT	125	}
1da177e4	126
314c926f GU	127	platform_set_drvdata(pdev, dev);
314c926f GU	128
1da177e4 LT	129	return 0;
	130	}
	131
314c926f	132	static int __exit amimouse_remove(struct platform_device *pdev)
1da177e4	133	{
314c926f GU	134	struct input_dev *dev = platform_get_drvdata(pdev);
314c926f GU	135
314c926f GU	136	input_unregister_device(dev);
	137	return 0;
	138	}
	139
	140	static struct platform_driver amimouse_driver = {
	141	.remove = __exit_p(amimouse_remove),
	142	.driver = {
	143	.name = "amiga-mouse",
314c926f GU	144	},
314c926f GU	145	};
d3d25808	146
e492fe27	147	module_platform_driver_probe(amimouse_driver, amimouse_probe);
314c926f GU	148
314c926f GU	149	MODULE_ALIAS("platform:amiga-mouse");