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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 1996-2001 Vojtech Pavlik |
3 | */ | |
4 | ||
5 | /* | |
6 | * This is just a very simple driver that can dump the data | |
7 | * out of the joystick port into the syslog ... | |
8 | */ | |
9 | ||
10 | /* | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | * | |
25 | * Should you need to contact me, the author, you can do so either by | |
26 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: | |
27 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic | |
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
31 | #include <linux/gameport.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/delay.h> | |
4e57b681 | 34 | #include <linux/slab.h> |
1da177e4 LT |
35 | |
36 | #define DRIVER_DESC "Gameport data dumper module" | |
37 | ||
38 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
39 | MODULE_DESCRIPTION(DRIVER_DESC); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
42 | #define BUF_SIZE 256 | |
43 | ||
44 | struct joydump { | |
45 | unsigned int time; | |
46 | unsigned char data; | |
47 | }; | |
48 | ||
49 | static int joydump_connect(struct gameport *gameport, struct gameport_driver *drv) | |
50 | { | |
51 | struct joydump *buf; /* all entries */ | |
52 | struct joydump *dump, *prev; /* one entry each */ | |
53 | int axes[4], buttons; | |
54 | int i, j, t, timeout; | |
55 | unsigned long flags; | |
56 | unsigned char u; | |
57 | ||
58 | printk(KERN_INFO "joydump: ,------------------ START ----------------.\n"); | |
59 | printk(KERN_INFO "joydump: | Dumping: %30s |\n", gameport->phys); | |
60 | printk(KERN_INFO "joydump: | Speed: %28d kHz |\n", gameport->speed); | |
61 | ||
62 | if (gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { | |
63 | ||
64 | printk(KERN_INFO "joydump: | Raw mode not available - trying cooked. |\n"); | |
65 | ||
66 | if (gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { | |
67 | ||
68 | printk(KERN_INFO "joydump: | Cooked not available either. Failing. |\n"); | |
69 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
70 | return -ENODEV; | |
71 | } | |
72 | ||
73 | gameport_cooked_read(gameport, axes, &buttons); | |
74 | ||
75 | for (i = 0; i < 4; i++) | |
76 | printk(KERN_INFO "joydump: | Axis %d: %4d. |\n", i, axes[i]); | |
77 | printk(KERN_INFO "joydump: | Buttons %02x. |\n", buttons); | |
78 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
79 | } | |
80 | ||
81 | timeout = gameport_time(gameport, 10000); /* 10 ms */ | |
82 | ||
83 | buf = kmalloc(BUF_SIZE * sizeof(struct joydump), GFP_KERNEL); | |
84 | if (!buf) { | |
85 | printk(KERN_INFO "joydump: no memory for testing\n"); | |
86 | goto jd_end; | |
87 | } | |
88 | dump = buf; | |
89 | t = 0; | |
90 | i = 1; | |
91 | ||
92 | local_irq_save(flags); | |
93 | ||
94 | u = gameport_read(gameport); | |
95 | ||
96 | dump->data = u; | |
97 | dump->time = t; | |
98 | dump++; | |
99 | ||
100 | gameport_trigger(gameport); | |
101 | ||
102 | while (i < BUF_SIZE && t < timeout) { | |
103 | ||
104 | dump->data = gameport_read(gameport); | |
105 | ||
106 | if (dump->data ^ u) { | |
107 | u = dump->data; | |
108 | dump->time = t; | |
109 | i++; | |
110 | dump++; | |
111 | } | |
112 | t++; | |
113 | } | |
114 | ||
115 | local_irq_restore(flags); | |
116 | ||
117 | /* | |
118 | * Dump data. | |
119 | */ | |
120 | ||
121 | t = i; | |
122 | dump = buf; | |
123 | prev = dump; | |
124 | ||
125 | printk(KERN_INFO "joydump: >------------------ DATA -----------------<\n"); | |
126 | printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", 0, 0); | |
127 | for (j = 7; j >= 0; j--) | |
128 | printk("%d", (dump->data >> j) & 1); | |
129 | printk(" |\n"); | |
130 | dump++; | |
131 | ||
132 | for (i = 1; i < t; i++, dump++, prev++) { | |
133 | printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", | |
134 | i, dump->time - prev->time); | |
135 | for (j = 7; j >= 0; j--) | |
136 | printk("%d", (dump->data >> j) & 1); | |
137 | printk(" |\n"); | |
138 | } | |
139 | kfree(buf); | |
140 | ||
141 | jd_end: | |
142 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static void joydump_disconnect(struct gameport *gameport) | |
148 | { | |
149 | gameport_close(gameport); | |
150 | } | |
151 | ||
152 | static struct gameport_driver joydump_drv = { | |
153 | .driver = { | |
154 | .name = "joydump", | |
155 | }, | |
156 | .description = DRIVER_DESC, | |
157 | .connect = joydump_connect, | |
158 | .disconnect = joydump_disconnect, | |
159 | }; | |
160 | ||
98a84131 | 161 | module_gameport_driver(joydump_drv); |