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1/*
2 * Copyright (c) 1998-2001 Vojtech Pavlik
3 */
4
5/*
6 * Driver for Amiga joysticks for Linux/m68k
7 */
8
9/*
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 */
24
25#include <linux/types.h>
26#include <linux/errno.h>
27#include <linux/kernel.h>
28#include <linux/module.h>
29#include <linux/init.h>
30#include <linux/input.h>
31#include <linux/interrupt.h>
32#include <linux/mutex.h>
33
34#include <asm/amigahw.h>
35#include <asm/amigaints.h>
36
37MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
38MODULE_DESCRIPTION("Driver for Amiga joysticks");
39MODULE_LICENSE("GPL");
40
41static int amijoy[2] = { 0, 1 };
42module_param_array_named(map, amijoy, uint, NULL, 0);
43MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
44
45static int amijoy_used;
46static DEFINE_MUTEX(amijoy_mutex);
47static struct input_dev *amijoy_dev[2];
48static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
49
50static irqreturn_t amijoy_interrupt(int irq, void *dummy)
51{
52 int i, data = 0, button = 0;
53
54 for (i = 0; i < 2; i++)
55 if (amijoy[i]) {
56
57 switch (i) {
58 case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
59 case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
60 }
61
62 input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
63
64 input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
65 data = ~(data ^ (data << 1));
66 input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
67
68 input_sync(amijoy_dev[i]);
69 }
70 return IRQ_HANDLED;
71}
72
73static int amijoy_open(struct input_dev *dev)
74{
75 int err;
76
77 err = mutex_lock_interruptible(&amijoy_mutex);
78 if (err)
79 return err;
80
81 if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
82 printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
83 err = -EBUSY;
84 goto out;
85 }
86
87 amijoy_used++;
88out:
89 mutex_unlock(&amijoy_mutex);
90 return err;
91}
92
93static void amijoy_close(struct input_dev *dev)
94{
95 mutex_lock(&amijoy_mutex);
96 if (!--amijoy_used)
97 free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
98 mutex_unlock(&amijoy_mutex);
99}
100
101static int __init amijoy_init(void)
102{
103 int i, j;
104 int err;
105
106 if (!MACH_IS_AMIGA)
107 return -ENODEV;
108
109 for (i = 0; i < 2; i++) {
110 if (!amijoy[i])
111 continue;
112
113 amijoy_dev[i] = input_allocate_device();
114 if (!amijoy_dev[i]) {
115 err = -ENOMEM;
116 goto fail;
117 }
118
119 if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
120 input_free_device(amijoy_dev[i]);
121 err = -EBUSY;
122 goto fail;
123 }
124
125 amijoy_dev[i]->name = "Amiga joystick";
126 amijoy_dev[i]->phys = amijoy_phys[i];
127 amijoy_dev[i]->id.bustype = BUS_AMIGA;
128 amijoy_dev[i]->id.vendor = 0x0001;
129 amijoy_dev[i]->id.product = 0x0003;
130 amijoy_dev[i]->id.version = 0x0100;
131
132 amijoy_dev[i]->open = amijoy_open;
133 amijoy_dev[i]->close = amijoy_close;
134
135 amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
136 amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y);
137 amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
138 BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT);
139 for (j = 0; j < 2; j++) {
140 input_set_abs_params(amijoy_dev[i], ABS_X + j,
141 -1, 1, 0, 0);
142 }
143
144 err = input_register_device(amijoy_dev[i]);
145 if (err) {
146 input_free_device(amijoy_dev[i]);
147 goto fail;
148 }
149 }
150 return 0;
151
152 fail: while (--i >= 0)
153 if (amijoy[i]) {
154 input_unregister_device(amijoy_dev[i]);
155 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
156 }
157 return err;
158}
159
160static void __exit amijoy_exit(void)
161{
162 int i;
163
164 for (i = 0; i < 2; i++)
165 if (amijoy[i]) {
166 input_unregister_device(amijoy_dev[i]);
167 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
168 }
169}
170
171module_init(amijoy_init);
172module_exit(amijoy_exit);
173

Warning: That file was not part of the compilation database. It may have many parsing errors.