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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (c) 1999-2001 Vojtech Pavlik
3 */
4
5/*
6 * Input driver event debug module - dumps all events into syslog
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/slab.h>
30#include <linux/module.h>
31#include <linux/input.h>
32#include <linux/init.h>
33#include <linux/device.h>
34
35MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
36MODULE_DESCRIPTION("Input driver event debug module");
37MODULE_LICENSE("GPL");
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
40{
Dmitry Torokhov66e66112006-09-14 01:31:59 -040041 printk(KERN_DEBUG "evbug.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n",
Kay Sieversa6c24902008-10-30 00:07:50 -040042 dev_name(&handle->dev->dev), type, code, value);
Linus Torvalds1da177e2005-04-16 15:20:36 -070043}
44
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040045static int evbug_connect(struct input_handler *handler, struct input_dev *dev,
46 const struct input_device_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -070047{
48 struct input_handle *handle;
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040049 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070050
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040051 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
52 if (!handle)
53 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
55 handle->dev = dev;
56 handle->handler = handler;
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040057 handle->name = "evbug";
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040059 error = input_register_handle(handle);
60 if (error)
61 goto err_free_handle;
62
63 error = input_open_device(handle);
64 if (error)
65 goto err_unregister_handle;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
Dmitry Torokhov81956122008-06-02 01:02:52 -040067 printk(KERN_DEBUG "evbug.c: Connected device: %s (%s at %s)\n",
Kay Sieversa6c24902008-10-30 00:07:50 -040068 dev_name(&dev->dev),
Dmitry Torokhov81956122008-06-02 01:02:52 -040069 dev->name ?: "unknown",
70 dev->phys ?: "unknown");
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040072 return 0;
73
74 err_unregister_handle:
75 input_unregister_handle(handle);
76 err_free_handle:
77 kfree(handle);
78 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079}
80
81static void evbug_disconnect(struct input_handle *handle)
82{
Dmitry Torokhov81956122008-06-02 01:02:52 -040083 printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n",
Kay Sieversa6c24902008-10-30 00:07:50 -040084 dev_name(&handle->dev->dev));
Linus Torvalds1da177e2005-04-16 15:20:36 -070085
86 input_close_device(handle);
Dmitry Torokhov5b2a0822007-04-12 01:29:46 -040087 input_unregister_handle(handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 kfree(handle);
89}
90
Dmitry Torokhov66e66112006-09-14 01:31:59 -040091static const struct input_device_id evbug_ids[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 { .driver_info = 1 }, /* Matches all devices */
93 { }, /* Terminating zero entry */
94};
95
96MODULE_DEVICE_TABLE(input, evbug_ids);
97
98static struct input_handler evbug_handler = {
99 .event = evbug_event,
100 .connect = evbug_connect,
101 .disconnect = evbug_disconnect,
102 .name = "evbug",
103 .id_table = evbug_ids,
104};
105
106static int __init evbug_init(void)
107{
Dmitry Torokhov4263cf02006-09-14 01:32:39 -0400108 return input_register_handler(&evbug_handler);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109}
110
111static void __exit evbug_exit(void)
112{
113 input_unregister_handler(&evbug_handler);
114}
115
116module_init(evbug_init);
117module_exit(evbug_exit);