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-rw-r--r--drivers/input/joystick/amijoy.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/drivers/input/joystick/amijoy.c b/drivers/input/joystick/amijoy.c
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+++ b/drivers/input/joystick/amijoy.c
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1/*
2 * $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $
3 *
4 * Copyright (c) 1998-2001 Vojtech Pavlik
5 */
6
7/*
8 * Driver for Amiga joysticks for Linux/m68k
9 */
10
11/*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * Should you need to contact me, the author, you can do so either by
27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
29 */
30
31#include <linux/types.h>
32#include <linux/errno.h>
33#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/moduleparam.h>
36#include <linux/init.h>
37#include <linux/input.h>
38#include <linux/interrupt.h>
39
40#include <asm/system.h>
41#include <asm/amigahw.h>
42#include <asm/amigaints.h>
43
44MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
45MODULE_DESCRIPTION("Driver for Amiga joysticks");
46MODULE_LICENSE("GPL");
47
48static int amijoy[2] = { 0, 1 };
49module_param_array_named(map, amijoy, uint, NULL, 0);
50MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
51
52__obsolete_setup("amijoy=");
53
54static int amijoy_used[2] = { 0, 0 };
55static struct input_dev amijoy_dev[2];
56static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
57
58static char *amijoy_name = "Amiga joystick";
59
60static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
61{
62 int i, data = 0, button = 0;
63
64 for (i = 0; i < 2; i++)
65 if (amijoy[i]) {
66
67 switch (i) {
68 case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
69 case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
70 }
71
72 input_regs(amijoy_dev + i, fp);
73
74 input_report_key(amijoy_dev + i, BTN_TRIGGER, button);
75
76 input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
77 data = ~(data ^ (data << 1));
78 input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
79
80 input_sync(amijoy_dev + i);
81 }
82 return IRQ_HANDLED;
83}
84
85static int amijoy_open(struct input_dev *dev)
86{
87 int *used = dev->private;
88
89 if ((*used)++)
90 return 0;
91
92 if (request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
93 (*used)--;
94 printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
95 return -EBUSY;
96 }
97
98 return 0;
99}
100
101static void amijoy_close(struct input_dev *dev)
102{
103 int *used = dev->private;
104
105 if (!--(*used))
106 free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
107}
108
109static int __init amijoy_init(void)
110{
111 int i, j;
112
113 for (i = 0; i < 2; i++)
114 if (amijoy[i]) {
115 if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2,
116 "amijoy [Denise]")) {
117 if (i == 1 && amijoy[0]) {
118 input_unregister_device(amijoy_dev);
119 release_mem_region(CUSTOM_PHYSADDR+10, 2);
120 }
121 return -EBUSY;
122 }
123
124 amijoy_dev[i].open = amijoy_open;
125 amijoy_dev[i].close = amijoy_close;
126 amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
127 amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
128 amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
129 for (j = 0; j < 2; j++) {
130 amijoy_dev[i].absmin[ABS_X + j] = -1;
131 amijoy_dev[i].absmax[ABS_X + j] = 1;
132 }
133
134 amijoy_dev[i].name = amijoy_name;
135 amijoy_dev[i].phys = amijoy_phys[i];
136 amijoy_dev[i].id.bustype = BUS_AMIGA;
137 amijoy_dev[i].id.vendor = 0x0001;
138 amijoy_dev[i].id.product = 0x0003;
139 amijoy_dev[i].id.version = 0x0100;
140
141 amijoy_dev[i].private = amijoy_used + i;
142
143 input_register_device(amijoy_dev + i);
144 printk(KERN_INFO "input: %s at joy%ddat\n", 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);