1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* joy-amiga.c Version 1.2
*
* Copyright (c) 1998 Vojtech Pavlik
*/
/*
* This is a module for the Linux joystick driver, supporting
* microswitch based joystick connected to Amiga joystick port.
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Should you need to contact me, the author, you can do so either by
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
* Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
*/
#include <asm/system.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/joystick.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/amigahw.h>
static struct js_port* js_am_port __initdata = NULL;
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
MODULE_PARM(js_am, "1-2i");
static int js_am[]={0,0};
/*
* js_am_read() reads and Amiga joystick data.
*/
static int js_am_read(void *info, int **axes, int **buttons)
{
int data = 0;
switch (*(int*)info) {
case 0:
data = ~custom.joy0dat;
buttons[0][0] = (~ciaa.pra >> 6) & 1;
break;
case 1:
data = ~custom.joy1dat;
buttons[0][0] = (~ciaa.pra >> 7) & 1;
break;
default:
return -1;
}
axes[0][0] = ((data >> 1) & 1) - ((data >> 9) & 1);
data = ~(data ^ (data << 1));
axes[0][0] = ((data >> 1) & 1) - ((data >> 9) & 1);
return 0;
}
/*
* js_am_open() is a callback from the file open routine.
*/
static int js_am_open(struct js_dev *jd)
{
MOD_INC_USE_COUNT;
return 0;
}
/*
* js_am_close() is a callback from the file release routine.
*/
static int js_am_close(struct js_dev *jd)
{
MOD_DEC_USE_COUNT;
return 0;
}
/*
* js_am_init_corr() initializes correction values of
* Amiga joysticks.
*/
static void __init js_am_init_corr(struct js_corr **corr)
{
int i;
for (i = 0; i < 2; i++) {
corr[0][i].type = JS_CORR_BROKEN;
corr[0][i].prec = 0;
corr[0][i].coef[0] = 0;
corr[0][i].coef[1] = 0;
corr[0][i].coef[2] = (1 << 29);
corr[0][i].coef[3] = (1 << 29);
}
}
#ifndef MODULE
void __init js_am_setup(char *str, int *ints)
{
int i;
for (i = 0; i <= ints[0] && i < 2; i++) js_am[i] = ints[i+1];
}
#endif
#ifdef MODULE
int init_module(void)
#else
int __init js_am_init(void)
#endif
{
int i;
for (i = 0; i < 2; i++)
if (js_am[i]) {
js_am_port = js_register_port(js_am_port, &i, 1, sizeof(int), js_am_read);
printk(KERN_INFO "js%d: Amiga joystick at joy%ddat\n",
js_register_device(js_am_port, 0, 2, 1, "Amiga joystick", js_am_open, js_am_close), i);
js_am_init_corr(js_am_port->corr);
}
if (js_am_port) return 0;
#ifdef MODULE
printk(KERN_WARNING "joy-amiga: no joysticks specified\n");
#endif
return -ENODEV;
}
#ifdef MODULE
void cleanup_module(void)
{
while (js_am_port != NULL) {
if (js_am_port->devs[0] != NULL)
js_unregister_device(js_am_port->devs[0]);
js_am_port = js_unregister_port(js_am_port);
}
}
#endif
|
