Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (c) 1996-2001 Vojtech Pavlik |
4 | */ | |
5 | ||
6 | /* | |
7 | * This is just a very simple driver that can dump the data | |
8 | * out of the joystick port into the syslog ... | |
9 | */ | |
10 | ||
11 | /* | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/gameport.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/delay.h> | |
4e57b681 | 18 | #include <linux/slab.h> |
1da177e4 LT |
19 | |
20 | #define DRIVER_DESC "Gameport data dumper module" | |
21 | ||
22 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
23 | MODULE_DESCRIPTION(DRIVER_DESC); | |
24 | MODULE_LICENSE("GPL"); | |
25 | ||
26 | #define BUF_SIZE 256 | |
27 | ||
28 | struct joydump { | |
29 | unsigned int time; | |
30 | unsigned char data; | |
31 | }; | |
32 | ||
33 | static int joydump_connect(struct gameport *gameport, struct gameport_driver *drv) | |
34 | { | |
35 | struct joydump *buf; /* all entries */ | |
36 | struct joydump *dump, *prev; /* one entry each */ | |
37 | int axes[4], buttons; | |
38 | int i, j, t, timeout; | |
39 | unsigned long flags; | |
40 | unsigned char u; | |
41 | ||
42 | printk(KERN_INFO "joydump: ,------------------ START ----------------.\n"); | |
43 | printk(KERN_INFO "joydump: | Dumping: %30s |\n", gameport->phys); | |
44 | printk(KERN_INFO "joydump: | Speed: %28d kHz |\n", gameport->speed); | |
45 | ||
46 | if (gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { | |
47 | ||
48 | printk(KERN_INFO "joydump: | Raw mode not available - trying cooked. |\n"); | |
49 | ||
50 | if (gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { | |
51 | ||
52 | printk(KERN_INFO "joydump: | Cooked not available either. Failing. |\n"); | |
53 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
54 | return -ENODEV; | |
55 | } | |
56 | ||
57 | gameport_cooked_read(gameport, axes, &buttons); | |
58 | ||
59 | for (i = 0; i < 4; i++) | |
60 | printk(KERN_INFO "joydump: | Axis %d: %4d. |\n", i, axes[i]); | |
61 | printk(KERN_INFO "joydump: | Buttons %02x. |\n", buttons); | |
62 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
63 | } | |
64 | ||
65 | timeout = gameport_time(gameport, 10000); /* 10 ms */ | |
66 | ||
6da2ec56 | 67 | buf = kmalloc_array(BUF_SIZE, sizeof(struct joydump), GFP_KERNEL); |
1da177e4 LT |
68 | if (!buf) { |
69 | printk(KERN_INFO "joydump: no memory for testing\n"); | |
70 | goto jd_end; | |
71 | } | |
72 | dump = buf; | |
73 | t = 0; | |
74 | i = 1; | |
75 | ||
76 | local_irq_save(flags); | |
77 | ||
78 | u = gameport_read(gameport); | |
79 | ||
80 | dump->data = u; | |
81 | dump->time = t; | |
82 | dump++; | |
83 | ||
84 | gameport_trigger(gameport); | |
85 | ||
86 | while (i < BUF_SIZE && t < timeout) { | |
87 | ||
88 | dump->data = gameport_read(gameport); | |
89 | ||
90 | if (dump->data ^ u) { | |
91 | u = dump->data; | |
92 | dump->time = t; | |
93 | i++; | |
94 | dump++; | |
95 | } | |
96 | t++; | |
97 | } | |
98 | ||
99 | local_irq_restore(flags); | |
100 | ||
101 | /* | |
102 | * Dump data. | |
103 | */ | |
104 | ||
105 | t = i; | |
106 | dump = buf; | |
107 | prev = dump; | |
108 | ||
109 | printk(KERN_INFO "joydump: >------------------ DATA -----------------<\n"); | |
110 | printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", 0, 0); | |
111 | for (j = 7; j >= 0; j--) | |
112 | printk("%d", (dump->data >> j) & 1); | |
113 | printk(" |\n"); | |
114 | dump++; | |
115 | ||
116 | for (i = 1; i < t; i++, dump++, prev++) { | |
117 | printk(KERN_INFO "joydump: | index: %3d delta: %3d us data: ", | |
118 | i, dump->time - prev->time); | |
119 | for (j = 7; j >= 0; j--) | |
120 | printk("%d", (dump->data >> j) & 1); | |
121 | printk(" |\n"); | |
122 | } | |
123 | kfree(buf); | |
124 | ||
125 | jd_end: | |
126 | printk(KERN_INFO "joydump: `------------------- END -----------------'\n"); | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | static void joydump_disconnect(struct gameport *gameport) | |
132 | { | |
133 | gameport_close(gameport); | |
134 | } | |
135 | ||
136 | static struct gameport_driver joydump_drv = { | |
137 | .driver = { | |
138 | .name = "joydump", | |
139 | }, | |
140 | .description = DRIVER_DESC, | |
141 | .connect = joydump_connect, | |
142 | .disconnect = joydump_disconnect, | |
143 | }; | |
144 | ||
98a84131 | 145 | module_gameport_driver(joydump_drv); |