| 1 | |
| 2 | * Copyright (c) 1999-2001 Vojtech Pavlik
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| 3 |
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| 4 |
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| 5 | |
| 6 | * Input driver event debug module - dumps all events into syslog
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| 7 |
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| 8 |
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| 9 | |
| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 23 |
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| 24 |
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| 25 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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| 26 |
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| 27 | #include <linux/slab.h>
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| 28 | #include <linux/module.h>
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| 29 | #include <linux/input.h>
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| 30 | #include <linux/init.h>
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| 31 | #include <linux/device.h>
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| 32 |
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| 33 | MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
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| 34 | MODULE_DESCRIPTION("Input driver event debug module");
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| 35 | MODULE_LICENSE("GPL");
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| 36 |
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| 37 | static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
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| 38 | {
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| 39 | printk(KERN_DEBUG pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"),
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| 40 | dev_name(&handle->dev->dev), type, code, value);
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| 41 | }
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| 42 |
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| 43 | static int evbug_connect(struct input_handler *handler, struct input_dev *dev,
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| 44 | const struct input_device_id *id)
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| 45 | {
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| 46 | struct input_handle *handle;
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| 47 | int error;
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| 48 |
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| 49 | handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
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| 50 | if (!handle)
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| 51 | return -ENOMEM;
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| 52 |
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| 53 | handle->dev = dev;
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| 54 | handle->handler = handler;
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| 55 | handle->name = "evbug";
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| 56 |
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| 57 | error = input_register_handle(handle);
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| 58 | if (error)
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| 59 | goto err_free_handle;
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| 60 |
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| 61 | error = input_open_device(handle);
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| 62 | if (error)
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| 63 | goto err_unregister_handle;
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| 64 |
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| 65 | printk(KERN_DEBUG pr_fmt("Connected device: %s (%s at %s)\n"),
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| 66 | dev_name(&dev->dev),
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| 67 | dev->name ?: "unknown",
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| 68 | dev->phys ?: "unknown");
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| 69 |
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| 70 | return 0;
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| 71 |
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| 72 | err_unregister_handle:
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| 73 | input_unregister_handle(handle);
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| 74 | err_free_handle:
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| 75 | kfree(handle);
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| 76 | return error;
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| 77 | }
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| 78 |
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| 79 | static void evbug_disconnect(struct input_handle *handle)
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| 80 | {
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| 81 | printk(KERN_DEBUG pr_fmt("Disconnected device: %s\n"),
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| 82 | dev_name(&handle->dev->dev));
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| 83 |
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| 84 | input_close_device(handle);
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| 85 | input_unregister_handle(handle);
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| 86 | kfree(handle);
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| 87 | }
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| 88 |
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| 89 | static const struct input_device_id evbug_ids[] = {
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| 90 | { .driver_info = 1 },
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| 91 | { },
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| 92 | };
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| 93 |
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| 94 | MODULE_DEVICE_TABLE(input, evbug_ids);
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| 95 |
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| 96 | static struct input_handler evbug_handler = {
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| 97 | .event = evbug_event,
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| 98 | .connect = evbug_connect,
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| 99 | .disconnect = evbug_disconnect,
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| 100 | .name = "evbug",
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| 101 | .id_table = evbug_ids,
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| 102 | };
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| 103 |
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| 104 | static int __init evbug_init(void)
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| 105 | {
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| 106 | return input_register_handler(&evbug_handler);
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| 107 | }
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| 108 |
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| 109 | static void __exit evbug_exit(void)
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| 110 | {
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| 111 | input_unregister_handler(&evbug_handler);
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| 112 | }
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| 113 |
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| 114 | module_init(evbug_init);
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| 115 | module_exit(evbug_exit);
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