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1da177e4 LT |
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 | ||
44 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
45 | MODULE_DESCRIPTION("Driver for Amiga joysticks"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
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)"); | |
51 | ||
52 | __obsolete_setup("amijoy="); | |
53 | ||
8b1a198b DT |
54 | static int amijoy_used; |
55 | static DECLARE_MUTEX(amijoy_sem); | |
1da177e4 LT |
56 | static struct input_dev amijoy_dev[2]; |
57 | static char *amijoy_phys[2] = { "amijoy/input0", "amijoy/input1" }; | |
58 | ||
59 | static char *amijoy_name = "Amiga joystick"; | |
60 | ||
61 | static irqreturn_t amijoy_interrupt(int irq, void *dummy, struct pt_regs *fp) | |
62 | { | |
63 | int i, data = 0, button = 0; | |
64 | ||
65 | for (i = 0; i < 2; i++) | |
66 | if (amijoy[i]) { | |
67 | ||
68 | switch (i) { | |
69 | case 0: data = ~custom.joy0dat; button = (~ciaa.pra >> 6) & 1; break; | |
70 | case 1: data = ~custom.joy1dat; button = (~ciaa.pra >> 7) & 1; break; | |
71 | } | |
72 | ||
73 | input_regs(amijoy_dev + i, fp); | |
74 | ||
75 | input_report_key(amijoy_dev + i, BTN_TRIGGER, button); | |
76 | ||
77 | input_report_abs(amijoy_dev + i, ABS_X, ((data >> 1) & 1) - ((data >> 9) & 1)); | |
78 | data = ~(data ^ (data << 1)); | |
79 | input_report_abs(amijoy_dev + i, ABS_Y, ((data >> 1) & 1) - ((data >> 9) & 1)); | |
80 | ||
81 | input_sync(amijoy_dev + i); | |
82 | } | |
83 | return IRQ_HANDLED; | |
84 | } | |
85 | ||
86 | static int amijoy_open(struct input_dev *dev) | |
87 | { | |
8b1a198b | 88 | int err; |
1da177e4 | 89 | |
8b1a198b DT |
90 | err = down_interruptible(&amijoy_sem); |
91 | if (err) | |
92 | return err; | |
1da177e4 | 93 | |
8b1a198b | 94 | if (!amijoy_used && request_irq(IRQ_AMIGA_VERTB, amijoy_interrupt, 0, "amijoy", amijoy_interrupt)) { |
1da177e4 | 95 | printk(KERN_ERR "amijoy.c: Can't allocate irq %d\n", IRQ_AMIGA_VERTB); |
8b1a198b DT |
96 | err = -EBUSY; |
97 | goto out; | |
1da177e4 LT |
98 | } |
99 | ||
8b1a198b DT |
100 | amijoy_used++; |
101 | out: | |
102 | up(&amijoy_sem); | |
103 | return err; | |
1da177e4 LT |
104 | } |
105 | ||
106 | static void amijoy_close(struct input_dev *dev) | |
107 | { | |
a61caa85 | 108 | down(&amijoy_sem); |
8b1a198b | 109 | if (!--amijoy_used) |
1da177e4 | 110 | free_irq(IRQ_AMIGA_VERTB, amijoy_interrupt); |
8b1a198b | 111 | up(&amijoy_sem); |
1da177e4 LT |
112 | } |
113 | ||
114 | static int __init amijoy_init(void) | |
115 | { | |
116 | int i, j; | |
117 | ||
118 | for (i = 0; i < 2; i++) | |
119 | if (amijoy[i]) { | |
120 | if (!request_mem_region(CUSTOM_PHYSADDR+10+i*2, 2, | |
121 | "amijoy [Denise]")) { | |
122 | if (i == 1 && amijoy[0]) { | |
123 | input_unregister_device(amijoy_dev); | |
124 | release_mem_region(CUSTOM_PHYSADDR+10, 2); | |
125 | } | |
126 | return -EBUSY; | |
127 | } | |
128 | ||
129 | amijoy_dev[i].open = amijoy_open; | |
130 | amijoy_dev[i].close = amijoy_close; | |
131 | amijoy_dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); | |
132 | amijoy_dev[i].absbit[0] = BIT(ABS_X) | BIT(ABS_Y); | |
133 | amijoy_dev[i].keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); | |
134 | for (j = 0; j < 2; j++) { | |
135 | amijoy_dev[i].absmin[ABS_X + j] = -1; | |
136 | amijoy_dev[i].absmax[ABS_X + j] = 1; | |
137 | } | |
138 | ||
139 | amijoy_dev[i].name = amijoy_name; | |
140 | amijoy_dev[i].phys = amijoy_phys[i]; | |
141 | amijoy_dev[i].id.bustype = BUS_AMIGA; | |
142 | amijoy_dev[i].id.vendor = 0x0001; | |
143 | amijoy_dev[i].id.product = 0x0003; | |
144 | amijoy_dev[i].id.version = 0x0100; | |
145 | ||
1da177e4 LT |
146 | input_register_device(amijoy_dev + i); |
147 | printk(KERN_INFO "input: %s at joy%ddat\n", amijoy_name, i); | |
148 | } | |
149 | return 0; | |
150 | } | |
151 | ||
152 | static void __exit amijoy_exit(void) | |
153 | { | |
154 | int i; | |
155 | ||
156 | for (i = 0; i < 2; i++) | |
157 | if (amijoy[i]) { | |
158 | input_unregister_device(amijoy_dev + i); | |
159 | release_mem_region(CUSTOM_PHYSADDR+10+i*2, 2); | |
160 | } | |
161 | } | |
162 | ||
163 | module_init(amijoy_init); | |
164 | module_exit(amijoy_exit); |