2 * Copyright (c) 1998-2001 Vojtech Pavlik
6 * Driver for Amiga joysticks for Linux/m68k
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.
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.
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
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>
34 #include <asm/amigahw.h>
35 #include <asm/amigaints.h>
37 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
38 MODULE_DESCRIPTION("Driver for Amiga joysticks");
39 MODULE_LICENSE("GPL");
41 static int amijoy
[2] = { 0, 1 };
42 module_param_array_named(map
, amijoy
, uint
, NULL
, 0);
43 MODULE_PARM_DESC(map
, "Map of attached joysticks in form of <a>,<b> (default is 0,1)");
45 static int amijoy_used
;
46 static DEFINE_MUTEX(amijoy_mutex
);
47 static struct input_dev
*amijoy_dev
[2];
48 static char *amijoy_phys
[2] = { "amijoy/input0", "amijoy/input1" };
50 static irqreturn_t
amijoy_interrupt(int irq
, void *dummy
)
52 int i
, data
= 0, button
= 0;
54 for (i
= 0; i
< 2; 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;
62 input_report_key(amijoy_dev
[i
], BTN_TRIGGER
, button
);
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));
68 input_sync(amijoy_dev
[i
]);
73 static int amijoy_open(struct input_dev
*dev
)
77 err
= mutex_lock_interruptible(&amijoy_mutex
);
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
);
89 mutex_unlock(&amijoy_mutex
);
93 static void amijoy_close(struct input_dev
*dev
)
95 mutex_lock(&amijoy_mutex
);
97 free_irq(IRQ_AMIGA_VERTB
, amijoy_interrupt
);
98 mutex_unlock(&amijoy_mutex
);
101 static int __init
amijoy_init(void)
109 for (i
= 0; i
< 2; i
++) {
113 amijoy_dev
[i
] = input_allocate_device();
114 if (!amijoy_dev
[i
]) {
119 if (!request_mem_region(CUSTOM_PHYSADDR
+ 10 + i
* 2, 2, "amijoy [Denise]")) {
120 input_free_device(amijoy_dev
[i
]);
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;
132 amijoy_dev
[i
]->open
= amijoy_open
;
133 amijoy_dev
[i
]->close
= amijoy_close
;
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
,
144 err
= input_register_device(amijoy_dev
[i
]);
146 input_free_device(amijoy_dev
[i
]);
152 fail
: while (--i
>= 0)
154 input_unregister_device(amijoy_dev
[i
]);
155 release_mem_region(CUSTOM_PHYSADDR
+ 10 + i
* 2, 2);
160 static void __exit
amijoy_exit(void)
164 for (i
= 0; i
< 2; i
++)
166 input_unregister_device(amijoy_dev
[i
]);
167 release_mem_region(CUSTOM_PHYSADDR
+ 10 + i
* 2, 2);
171 module_init(amijoy_init
);
172 module_exit(amijoy_exit
);