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1da177e4 | 1 | /* |
1da177e4 LT |
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 | * Should you need to contact me, the author, you can do so either by | |
25 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
26 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
27 | */ | |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/module.h> | |
1da177e4 LT |
33 | #include <linux/init.h> |
34 | #include <linux/input.h> | |
35 | #include <linux/interrupt.h> | |
72ba9f0c | 36 | #include <linux/mutex.h> |
1da177e4 | 37 | |
1da177e4 LT |
38 | #include <asm/amigahw.h> |
39 | #include <asm/amigaints.h> | |
40 | ||
41 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
42 | MODULE_DESCRIPTION("Driver for Amiga joysticks"); | |
43 | MODULE_LICENSE("GPL"); | |
44 | ||
45 | static int amijoy[2] = { 0, 1 }; | |
46 | module_param_array_named(map, amijoy, uint, NULL, 0); | |
47 | MODULE_PARM_DESC(map, "Map of attached joysticks in form of <a>,<b> (default is 0,1)"); | |
48 | ||
8b1a198b | 49 | static int amijoy_used; |
72ba9f0c | 50 | static DEFINE_MUTEX(amijoy_mutex); |
17dd3f0f | 51 | static struct input_dev *amijoy_dev[2]; |
1da177e4 LT |
52 | static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; |
53 | ||
7d12e780 | 54 | static irqreturn_t amijoy_interrupt(int irq, void *dummy) |
1da177e4 LT |
55 | { |
56 | int i, data = 0, button = 0; | |
57 | ||
58 | for (i = 0; i < 2; i++) | |
59 | if (amijoy[i]) { | |
60 | ||
61 | switch (i) { | |
b4290a23 AV |
62 | case 0: data = ~amiga_custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; |
63 | case 1: data = ~amiga_custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; | |
1da177e4 LT |
64 | } |
65 | ||
17dd3f0f | 66 | input_report_key(amijoy_dev[i], BTN_TRIGGER, button); |
1da177e4 | 67 | |
17dd3f0f | 68 | input_report_abs(amijoy_dev[i], ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); |
1da177e4 | 69 | data = ~(data ^ (data << 1)); |
17dd3f0f | 70 | input_report_abs(amijoy_dev[i], ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); |
1da177e4 | 71 | |
17dd3f0f | 72 | input_sync(amijoy_dev[i]); |
1da177e4 LT |
73 | } |
74 | return IRQ_HANDLED; | |
75 | } | |
76 | ||
77 | static int amijoy_open(struct input_dev *dev) | |
78 | { | |
8b1a198b | 79 | int err; |
1da177e4 | 80 | |
72ba9f0c | 81 | err = mutex_lock_interruptible(&amijoy_mutex); |
8b1a198b DT |
82 | if (err) |
83 | return err; | |
1da177e4 | 84 | |
8b1a198b | 85 | if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { |
1da177e4 | 86 | printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); |
8b1a198b DT |
87 | err = -EBUSY; |
88 | goto out; | |
1da177e4 LT |
89 | } |
90 | ||
8b1a198b DT |
91 | amijoy_used++; |
92 | out: | |
72ba9f0c | 93 | mutex_unlock(&amijoy_mutex); |
8b1a198b | 94 | return err; |
1da177e4 LT |
95 | } |
96 | ||
97 | static void amijoy_close(struct input_dev *dev) | |
98 | { | |
72ba9f0c | 99 | mutex_lock(&amijoy_mutex); |
8b1a198b | 100 | if (!--amijoy_used) |
1da177e4 | 101 | free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); |
72ba9f0c | 102 | mutex_unlock(&amijoy_mutex); |
1da177e4 LT |
103 | } |
104 | ||
105 | static int __init amijoy_init(void) | |
106 | { | |
107 | int i, j; | |
17dd3f0f | 108 | int err; |
1da177e4 | 109 | |
3183968c GU |
110 | if (!MACH_IS_AMIGA) |
111 | return -ENODEV; | |
112 | ||
17dd3f0f DT |
113 | for (i = 0; i < 2; i++) { |
114 | if (!amijoy[i]) | |
115 | continue; | |
1da177e4 | 116 | |
17dd3f0f DT |
117 | amijoy_dev[i] = input_allocate_device(); |
118 | if (!amijoy_dev[i]) { | |
119 | err = -ENOMEM; | |
120 | goto fail; | |
121 | } | |
1da177e4 | 122 | |
17dd3f0f DT |
123 | if (!request_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2, "amijoy [Denise]")) { |
124 | input_free_device(amijoy_dev[i]); | |
125 | err = -EBUSY; | |
126 | goto fail; | |
127 | } | |
1da177e4 | 128 | |
17dd3f0f DT |
129 | amijoy_dev[i]->name = "Amiga joystick"; |
130 | amijoy_dev[i]->phys = amijoy_phys[i]; | |
131 | amijoy_dev[i]->id.bustype = BUS_AMIGA; | |
132 | amijoy_dev[i]->id.vendor = 0x0001; | |
133 | amijoy_dev[i]->id.product = 0x0003; | |
134 | amijoy_dev[i]->id.version = 0x0100; | |
135 | ||
136 | amijoy_dev[i]->open = amijoy_open; | |
137 | amijoy_dev[i]->close = amijoy_close; | |
138 | ||
7b19ada2 JS |
139 | amijoy_dev[i]->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
140 | amijoy_dev[i]->absbit[0] = BIT_MASK(ABS_X) | BIT_MASK(ABS_Y); | |
141 | amijoy_dev[i]->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | | |
142 | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); | |
17dd3f0f | 143 | for (j = 0; j < 2; j++) { |
b84ae4a1 | 144 | input_set_abs_params(amijoy_dev[i], ABS_X + j, |
987a6c02 | 145 | -1, 1, 0, 0); |
1da177e4 | 146 | } |
17dd3f0f | 147 | |
127278ce DT |
148 | err = input_register_device(amijoy_dev[i]); |
149 | if (err) { | |
150 | input_free_device(amijoy_dev[i]); | |
151 | goto fail; | |
152 | } | |
17dd3f0f | 153 | } |
1da177e4 | 154 | return 0; |
17dd3f0f DT |
155 | |
156 | fail: while (--i >= 0) | |
157 | if (amijoy[i]) { | |
158 | input_unregister_device(amijoy_dev[i]); | |
159 | release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); | |
160 | } | |
161 | return err; | |
1da177e4 LT |
162 | } |
163 | ||
164 | static void __exit amijoy_exit(void) | |
165 | { | |
166 | int i; | |
167 | ||
168 | for (i = 0; i < 2; i++) | |
169 | if (amijoy[i]) { | |
17dd3f0f DT |
170 | input_unregister_device(amijoy_dev[i]); |
171 | release_mem_region(CUSTOM_PHYSADDR + 10 + i * 2, 2); | |
1da177e4 LT |
172 | } |
173 | } | |
174 | ||
175 | module_init(amijoy_init); | |
176 | module_exit(amijoy_exit); |