xref: /openbmc/linux/drivers/input/evbug.c (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
1 /*
2  * $Id: evbug.c,v 1.10 2001/09/25 10:12:07 vojtech Exp $
3  *
4  *  Copyright (c) 1999-2001 Vojtech Pavlik
5  */
6 
7 /*
8  *  Input driver event debug module - dumps all events into syslog
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/slab.h>
32 #include <linux/module.h>
33 #include <linux/input.h>
34 #include <linux/init.h>
35 #include <linux/device.h>
36 
37 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
38 MODULE_DESCRIPTION("Input driver event debug module");
39 MODULE_LICENSE("GPL");
40 
41 static char evbug_name[] = "evbug";
42 
43 static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
44 {
45 	printk(KERN_DEBUG "evbug.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, code, value);
46 }
47 
48 static struct input_handle *evbug_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
49 {
50 	struct input_handle *handle;
51 
52 	if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))
53 		return NULL;
54 	memset(handle, 0, sizeof(struct input_handle));
55 
56 	handle->dev = dev;
57 	handle->handler = handler;
58 	handle->name = evbug_name;
59 
60 	input_open_device(handle);
61 
62 	printk(KERN_DEBUG "evbug.c: Connected device: \"%s\", %s\n", dev->name, dev->phys);
63 
64 	return handle;
65 }
66 
67 static void evbug_disconnect(struct input_handle *handle)
68 {
69 	printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n", handle->dev->phys);
70 
71 	input_close_device(handle);
72 
73 	kfree(handle);
74 }
75 
76 static struct input_device_id evbug_ids[] = {
77 	{ .driver_info = 1 },	/* Matches all devices */
78 	{ },			/* Terminating zero entry */
79 };
80 
81 MODULE_DEVICE_TABLE(input, evbug_ids);
82 
83 static struct input_handler evbug_handler = {
84 	.event =	evbug_event,
85 	.connect =	evbug_connect,
86 	.disconnect =	evbug_disconnect,
87 	.name =		"evbug",
88 	.id_table =	evbug_ids,
89 };
90 
91 static int __init evbug_init(void)
92 {
93 	input_register_handler(&evbug_handler);
94 	return 0;
95 }
96 
97 static void __exit evbug_exit(void)
98 {
99 	input_unregister_handler(&evbug_handler);
100 }
101 
102 module_init(evbug_init);
103 module_exit(evbug_exit);
104