2 * $Id: amijoy.c,v 1.13 2002/01/22 20:26:32 vojtech Exp $
4 * Copyright (c) 1998-2001 Vojtech Pavlik
8 * Driver for Amiga joysticks for Linux/m68k
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.
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.
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
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
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>
40 #include <asm/system.h>
41 #include <asm/amigahw.h>
42 #include <asm/amigaints.h>
44 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
45 MODULE_DESCRIPTION("Driver for Amiga joysticks");
46 MODULE_LICENSE("GPL");
48 static int amijoy[2] = { 0, 1 };
49 module_param_array_named(map, amijoy, uint, NULL, 0);
50 MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
52 __obsolete_setup("amijoy=");
54 static int amijoy_used;
55 static DECLARE_MUTEX(amijoy_sem);
56 static struct input_dev *amijoy_dev[2];
57 static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" };
59 static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp)
61 int i, data = 0, button = 0;
63 for (i = 0; i < 2; i++)
67 case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break;
68 case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break;
71 input_regs(amijoy_dev[i], fp);
73 input_report_key(amijoy_dev[i], BTN_TRIGGER, button);
75 input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1));
76 data = ~(data ^ (data << 1));
77 input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1));
79 input_sync(amijoy_dev[i]);
84 static int amijoy_open(struct input_dev *dev)
88 err = down_interruptible(&amijoy_sem);
92 if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) {
93 printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB);
104 static void amijoy_close(struct input_dev *dev)
108 free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt);
112 static int __init amijoy_init(void)
117 for (i = 0; i < 2; i++) {
121 amijoy_dev[i] = input_allocate_device();
122 if (!amijoy_dev[i]) {
127 if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) {
128 input_free_device(amijoy_dev[i]);
133 amijoy_dev[i]->name = "Amiga joystick";
134 amijoy_dev[i]->phys = amijoy_phys[i];
135 amijoy_dev[i]->id.bustype = BUS_AMIGA;
136 amijoy_dev[i]->id.vendor = 0x0001;
137 amijoy_dev[i]->id.product = 0x0003;
138 amijoy_dev[i]->id.version = 0x0100;
140 amijoy_dev[i]->open = amijoy_open;
141 amijoy_dev[i]->close = amijoy_close;
143 amijoy_dev[i]->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
144 amijoy_dev[i]->absbit[0] = BIT(ABS_X) | BIT(ABS_Y);
145 amijoy_dev[i]->keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
146 for (j = 0; j < 2; j++) {
147 amijoy_dev[i]->absmin[ABS_X + j] = -1;
148 amijoy_dev[i]->absmax[ABS_X + j] = 1;
151 input_register_device(amijoy_dev[i]);
155 fail: while (--i >= 0)
157 input_unregister_device(amijoy_dev[i]);
158 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
163 static void __exit amijoy_exit(void)
167 for (i = 0; i < 2; i++)
169 input_unregister_device(amijoy_dev[i]);
170 release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2);
174 module_init(amijoy_init);
175 module_exit(amijoy_exit);