Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
1da177e4 LT |
3 | * Copyright (c) 1999-2001 Vojtech Pavlik |
4 | */ | |
5 | ||
6 | /* | |
7 | * Input driver event debug module - dumps all events into syslog | |
8 | */ | |
9 | ||
da0c4901 JP |
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
11 | ||
1da177e4 LT |
12 | #include <linux/slab.h> |
13 | #include <linux/module.h> | |
14 | #include <linux/input.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/device.h> | |
17 | ||
18 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); | |
19 | MODULE_DESCRIPTION("Input driver event debug module"); | |
20 | MODULE_LICENSE("GPL"); | |
21 | ||
1da177e4 LT |
22 | static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
23 | { | |
da0c4901 JP |
24 | printk(KERN_DEBUG pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"), |
25 | dev_name(&handle->dev->dev), type, code, value); | |
1da177e4 LT |
26 | } |
27 | ||
5b2a0826 DT |
28 | static int evbug_connect(struct input_handler *handler, struct input_dev *dev, |
29 | const struct input_device_id *id) | |
1da177e4 LT |
30 | { |
31 | struct input_handle *handle; | |
5b2a0826 | 32 | int error; |
1da177e4 | 33 | |
5b2a0826 DT |
34 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); |
35 | if (!handle) | |
36 | return -ENOMEM; | |
1da177e4 LT |
37 | |
38 | handle->dev = dev; | |
39 | handle->handler = handler; | |
5b2a0826 DT |
40 | handle->name = "evbug"; |
41 | ||
42 | error = input_register_handle(handle); | |
43 | if (error) | |
44 | goto err_free_handle; | |
1da177e4 | 45 | |
5b2a0826 DT |
46 | error = input_open_device(handle); |
47 | if (error) | |
48 | goto err_unregister_handle; | |
1da177e4 | 49 | |
da0c4901 JP |
50 | printk(KERN_DEBUG pr_fmt("Connected device: %s (%s at %s)\n"), |
51 | dev_name(&dev->dev), | |
52 | dev->name ?: "unknown", | |
53 | dev->phys ?: "unknown"); | |
1da177e4 | 54 | |
5b2a0826 DT |
55 | return 0; |
56 | ||
57 | err_unregister_handle: | |
58 | input_unregister_handle(handle); | |
59 | err_free_handle: | |
60 | kfree(handle); | |
61 | return error; | |
1da177e4 LT |
62 | } |
63 | ||
64 | static void evbug_disconnect(struct input_handle *handle) | |
65 | { | |
da0c4901 JP |
66 | printk(KERN_DEBUG pr_fmt("Disconnected device: %s\n"), |
67 | dev_name(&handle->dev->dev)); | |
1da177e4 LT |
68 | |
69 | input_close_device(handle); | |
5b2a0826 | 70 | input_unregister_handle(handle); |
1da177e4 LT |
71 | kfree(handle); |
72 | } | |
73 | ||
66e66118 | 74 | static const struct input_device_id evbug_ids[] = { |
1da177e4 LT |
75 | { .driver_info = 1 }, /* Matches all devices */ |
76 | { }, /* Terminating zero entry */ | |
77 | }; | |
78 | ||
79 | MODULE_DEVICE_TABLE(input, evbug_ids); | |
80 | ||
81 | static struct input_handler evbug_handler = { | |
82 | .event = evbug_event, | |
83 | .connect = evbug_connect, | |
84 | .disconnect = evbug_disconnect, | |
85 | .name = "evbug", | |
86 | .id_table = evbug_ids, | |
87 | }; | |
88 | ||
89 | static int __init evbug_init(void) | |
90 | { | |
4263cf0f | 91 | return input_register_handler(&evbug_handler); |
1da177e4 LT |
92 | } |
93 | ||
94 | static void __exit evbug_exit(void) | |
95 | { | |
96 | input_unregister_handler(&evbug_handler); | |
97 | } | |
98 | ||
99 | module_init(evbug_init); | |
100 | module_exit(evbug_exit); |