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

/*
 *  Atari mouse driver for Linux/m68k
 *
 *  Copyright (c) 2005 Michael Schmitz
 *
 *  Based on:
 *  Amiga mouse driver for Linux/m68k
 *
 *  Copyright (c) 2000-2002 Vojtech Pavlik
 *
 */
/*
 * The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
 * (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
 * interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
 * This driver only deals with handing key events off to the input layer.
 *
 * Largely based on the old:
 *
 * Atari Mouse Driver for Linux
 * by Robert de Vries (robert@and.nl) 19Jul93
 *
 * 16 Nov 1994 Andreas Schwab
 * Compatibility with busmouse
 * Support for three button mouse (shamelessly stolen from MiNT)
 * third button wired to one of the joystick directions on joystick 1
 *
 * 1996/02/11 Andreas Schwab
 * Module support
 * Allow multiple open's
 *
 * Converted to use new generic busmouse code.  5 Apr 1998
 *   Russell King <rmk@arm.uk.linux.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/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/atarihw.h>
#include <asm/atarikb.h>
#include <asm/atariints.h>

MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
MODULE_DESCRIPTION("Atari mouse driver");
MODULE_LICENSE("GPL");

static int mouse_threshold[2] = {2, 2};
module_param_array(mouse_threshold, int, NULL, 0);

#ifdef FIXED_ATARI_JOYSTICK
extern int atari_mouse_buttons;
#endif

static struct input_dev *atamouse_dev;

static void atamouse_interrupt(char *buf)
{
	int buttons, dx, dy;

	buttons = (buf[0] & 1) | ((buf[0] & 2) << 1);
#ifdef FIXED_ATARI_JOYSTICK
	buttons |= atari_mouse_buttons & 2;
	atari_mouse_buttons = buttons;
#endif

	/* only relative events get here */
	dx =  buf[1];
	dy = -buf[2];

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

	input_report_key(atamouse_dev, BTN_LEFT,   buttons & 0x1);
	input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
	input_report_key(atamouse_dev, BTN_RIGHT,  buttons & 0x4);

	input_sync(atamouse_dev);

	return;
}

static int atamouse_open(struct input_dev *dev)
{
#ifdef FIXED_ATARI_JOYSTICK
	atari_mouse_buttons = 0;
#endif
	ikbd_mouse_y0_top();
	ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
	ikbd_mouse_rel_pos();
	atari_input_mouse_interrupt_hook = atamouse_interrupt;

	return 0;
}

static void atamouse_close(struct input_dev *dev)
{
	ikbd_mouse_disable();
	atari_mouse_interrupt_hook = NULL;
}

static int __init atamouse_init(void)
{
	int error;

	if (!MACH_IS_ATARI || !ATARIHW_PRESENT(ST_MFP))
		return -ENODEV;

	if (!atari_keyb_init())
		return -ENODEV;

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

	atamouse_dev->name = "Atari mouse";
	atamouse_dev->phys = "atamouse/input0";
	atamouse_dev->id.bustype = BUS_HOST;
	atamouse_dev->id.vendor = 0x0001;
	atamouse_dev->id.product = 0x0002;
	atamouse_dev->id.version = 0x0100;

	atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL);
	atamouse_dev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
	atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);

	atamouse_dev->open = atamouse_open;
	atamouse_dev->close = atamouse_close;

	error = input_register_device(atamouse_dev);
	if (error) {
		input_free_device(atamouse_dev);
		return error;
	}

	return 0;
}

static void __exit atamouse_exit(void)
{
	input_unregister_device(atamouse_dev);
}

module_init(atamouse_init);
module_exit(atamouse_exit);
Commit	Line	Data
c04cb856 MS	1	/*
	2	* Atari mouse driver for Linux/m68k
	3	*
	4	* Copyright (c) 2005 Michael Schmitz
	5	*
	6	* Based on:
	7	* Amiga mouse driver for Linux/m68k
	8	*
	9	* Copyright (c) 2000-2002 Vojtech Pavlik
	10	*
	11	*/
	12	/*
	13	* The low level init and interrupt stuff is handled in arch/mm68k/atari/atakeyb.c
	14	* (the keyboard ACIA also handles the mouse and joystick data, and the keyboard
	15	* interrupt is shared with the MIDI ACIA so MIDI data also get handled there).
	16	* This driver only deals with handing key events off to the input layer.
	17	*
	18	* Largely based on the old:
	19	*
	20	* Atari Mouse Driver for Linux
	21	* by Robert de Vries (robert@and.nl) 19Jul93
	22	*
	23	* 16 Nov 1994 Andreas Schwab
	24	* Compatibility with busmouse
	25	* Support for three button mouse (shamelessly stolen from MiNT)
	26	* third button wired to one of the joystick directions on joystick 1
	27	*
	28	* 1996/02/11 Andreas Schwab
	29	* Module support
	30	* Allow multiple open's
	31	*
	32	* Converted to use new generic busmouse code. 5 Apr 1998
	33	* Russell King <rmk@arm.uk.linux.org>
	34	*/
	35
	36
	37	/*
	38	* This program is free software; you can redistribute it and/or modify it
	39	* under the terms of the GNU General Public License version 2 as published by
	40	* the Free Software Foundation
	41	*/
	42
	43	#include <linux/module.h>
	44	#include <linux/init.h>
	45	#include <linux/input.h>
	46	#include <linux/interrupt.h>
	47
	48	#include <asm/irq.h>
	49	#include <asm/setup.h>
	50	#include <asm/system.h>
	51	#include <asm/uaccess.h>
	52	#include <asm/atarihw.h>
	53	#include <asm/atarikb.h>
	54	#include <asm/atariints.h>
	55
	56	MODULE_AUTHOR("Michael Schmitz <schmitz@biophys.uni-duesseldorf.de>");
	57	MODULE_DESCRIPTION("Atari mouse driver");
	58	MODULE_LICENSE("GPL");
	59
82547e90 DT	60	static int mouse_threshold[2] = {2, 2};
82547e90 DT	61	module_param_array(mouse_threshold, int, NULL, 0);
c04cb856	62
c04cb856 MS	63	#ifdef FIXED_ATARI_JOYSTICK
	64	extern int atari_mouse_buttons;
	65	#endif
c04cb856 MS	66
	67	static struct input_dev *atamouse_dev;
	68
	69	static void atamouse_interrupt(char *buf)
	70	{
	71	int buttons, dx, dy;
	72
c04cb856 MS	73	buttons = (buf[0] & 1) \| ((buf[0] & 2) << 1);
	74	#ifdef FIXED_ATARI_JOYSTICK
	75	buttons \|= atari_mouse_buttons & 2;
	76	atari_mouse_buttons = buttons;
	77	#endif
c04cb856 MS	78
	79	/* only relative events get here */
	80	dx = buf[1];
	81	dy = -buf[2];
	82
	83	input_report_rel(atamouse_dev, REL_X, dx);
	84	input_report_rel(atamouse_dev, REL_Y, dy);
	85
	86	input_report_key(atamouse_dev, BTN_LEFT, buttons & 0x1);
	87	input_report_key(atamouse_dev, BTN_MIDDLE, buttons & 0x2);
	88	input_report_key(atamouse_dev, BTN_RIGHT, buttons & 0x4);
	89
	90	input_sync(atamouse_dev);
	91
	92	return;
	93	}
	94
	95	static int atamouse_open(struct input_dev *dev)
	96	{
c04cb856 MS	97	#ifdef FIXED_ATARI_JOYSTICK
	98	atari_mouse_buttons = 0;
	99	#endif
	100	ikbd_mouse_y0_top();
	101	ikbd_mouse_thresh(mouse_threshold[0], mouse_threshold[1]);
	102	ikbd_mouse_rel_pos();
	103	atari_input_mouse_interrupt_hook = atamouse_interrupt;
82547e90	104
c04cb856 MS	105	return 0;
	106	}
	107
	108	static void atamouse_close(struct input_dev *dev)
	109	{
82547e90 DT	110	ikbd_mouse_disable();
82547e90 DT	111	atari_mouse_interrupt_hook = NULL;
c04cb856 MS	112	}
	113
	114	static int __init atamouse_init(void)
	115	{
82547e90 DT	116	int error;
82547e90 DT	117
c04cb856 MS	118	if (!MACH_IS_ATARI \|\| !ATARIHW_PRESENT(ST_MFP))
	119	return -ENODEV;
	120
82547e90	121	if (!atari_keyb_init())
c04cb856 MS	122	return -ENODEV;
c04cb856 MS	123
6615c5b2 GU	124	atamouse_dev = input_allocate_device();
	125	if (!atamouse_dev)
	126	return -ENOMEM;
	127
c04cb856 MS	128	atamouse_dev->name = "Atari mouse";
c04cb856 MS	129	atamouse_dev->phys = "atamouse/input0";
6615c5b2	130	atamouse_dev->id.bustype = BUS_HOST;
c04cb856 MS	131	atamouse_dev->id.vendor = 0x0001;
	132	atamouse_dev->id.product = 0x0002;
	133	atamouse_dev->id.version = 0x0100;
	134
7b19ada2 JS	135	atamouse_dev->evbit[0] = BIT_MASK(EV_KEY) \| BIT_MASK(EV_REL);
	136	atamouse_dev->relbit[0] = BIT_MASK(REL_X) \| BIT_MASK(REL_Y);
	137	atamouse_dev->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) \|
	138	BIT_MASK(BTN_MIDDLE) \| BIT_MASK(BTN_RIGHT);
82547e90	139
c04cb856 MS	140	atamouse_dev->open = atamouse_open;
	141	atamouse_dev->close = atamouse_close;
	142
82547e90 DT	143	error = input_register_device(atamouse_dev);
82547e90 DT	144	if (error) {
6615c5b2	145	input_free_device(atamouse_dev);
82547e90	146	return error;
6615c5b2	147	}
c04cb856	148
c04cb856 MS	149	return 0;
	150	}
	151
	152	static void __exit atamouse_exit(void)
	153	{
	154	input_unregister_device(atamouse_dev);
	155	}
	156
	157	module_init(atamouse_init);
	158	module_exit(atamouse_exit);