1/*
2 * $Id: amijoy.c,v 1.1.1.1 2008/10/15 03:26:32 james26_jang Exp $
3 *
4 *  Copyright (c) 1998-2000 Vojtech Pavlik
5 *
6 *  Sponsored by SuSE
7 */
8
9/*
10 * Driver for Amiga joysticks for Linux/m68k
11 */
12
13/*
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 *
28 * Should you need to contact me, the author, you can do so either by
29 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail:
30 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
31 */
32
33#include <linux/types.h>
34#include <linux/errno.h>
35#include <linux/kernel.h>
36#include <linux/module.h>
37#include <linux/init.h>
38#include <linux/input.h>
39
40#include <asm/system.h>
41#include <asm/amigahw.h>
42
43MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
44MODULE_PARM(amijoy, "1-2i");
45MODULE_LICENSE("GPL");
46
47static int amijoy[2] = { 0, 1 };
48static int amijoy_used[2] = { 0, 0 };
49static struct input_dev amijoy_dev[2];
50
51static char *amijoy_name = "Amiga joystick";
52
53static void amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
54{
55	int i, data = 0, button = 0;
56
57	for (i = 0; i < 2; i++)
58		if (amijoy[i]) {
59
60			switch (i) {
61				case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
62				case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
63			}
64
65			input_report_key(amijoy_dev + i, BTN_TRIGGER, button);
66
67			input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1);
68			data = ~(data ^ (data << 1));
69			input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1);
70		}
71}
72
73static int amijoy_open(struct input_dev *dev)
74{
75	int *used = dev->private;
76
77	if ((*used)++)
78		return 0;
79
80	if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", NULL)) {
81		(*used)--;
82		printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", amijoy_irq);
83		return -EBUSY;
84	}
85
86	return 0;
87}
88
89static void amijoy_close(struct input_dev *dev)
90{
91	int *used = dev->private;
92
93	if (!--(*used))
94		free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
95}
96
97static int __init amijoy_setup(char *str)
98{
99	int i;
100	int ints[4]
101        str = get_options(str, ARRAY_SIZE(ints), ints);
102	for (i = 0; i <= ints[0] && i < 2; i++) amijoy[i] = ints[i+1];
103	return 1;
104}
105__setup("amijoy=", amijoy_setup);
106
107static int __init amijoy_init(void)
108{
109	int i, j;
110
111	init_timer(amijoy_timer);
112	port->timer.function = amijoy_timer;
113
114	for (i = 0; i < 2; i++)
115		if (amijoy[i]) {
116			if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
117						"amijoy [Denise]")) {
118				if (i == 1 && amijoy[0]) {
119					input_unregister_device(amijoy_dev);
120					release_mem_region(CUSTOM_PHYSADDR+10, 2);
121				}
122				return -EBUSY;
123			}
124
125			amijoy_dev[i].open = amijoy_open;
126			amijoy_dev[i].close = amijoy_close;
127			amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
128			amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
129			amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
130			for (j = 0; j < 2; j++) {
131				amijoy_dev[i].absmin[ABS_X + j] = -1;
132				amijoy_dev[i].absmax[ABS_X + j] = 1;
133			}
134
135			amijoy->dev[i].name = amijoy_name;
136			amijoy->dev[i].idbus = BUS_AMIGA;
137			amijoy->dev[i].idvendor = 0x0001;
138			amijoy->dev[i].idproduct = 0x0003;
139			amijoy->dev[i].version = 0x0100;
140
141			amijoy_dev[i].private = amijoy_used + i;
142
143			input_register_device(amijoy_dev + i);
144			printk(KERN_INFO "input%d: %s at joy%ddat\n", amijoy_dev[i].number, amijoy_name, i);
145		}
146	return 0;
147}
148
149static void _exit amijoy_exit(void)
150{
151	int i;
152
153	for (i = 0; i < 2; i++)
154		if (amijoy[i]) {
155			input_unregister_device(amijoy_dev + i);
156			release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2);
157		}
158}
159
160module_init(amijoy_init);
161module_exit(amijoy_exit);
162