1 /* 2 * 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 35 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 36 MODULE_DESCRIPTION("Input driver event debug module"); 37 MODULE_LICENSE("GPL"); 38 39 static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) 40 { 41 printk(KERN_DEBUG "evbug.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", 42 handle->dev->phys, type, code, value); 43 } 44 45 static int evbug_connect(struct input_handler *handler, struct input_dev *dev, 46 const struct input_device_id *id) 47 { 48 struct input_handle *handle; 49 int error; 50 51 handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); 52 if (!handle) 53 return -ENOMEM; 54 55 handle->dev = dev; 56 handle->handler = handler; 57 handle->name = "evbug"; 58 59 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; 66 67 printk(KERN_DEBUG "evbug.c: Connected device: \"%s\", %s\n", dev->name, dev->phys); 68 69 return 0; 70 71 err_unregister_handle: 72 input_unregister_handle(handle); 73 err_free_handle: 74 kfree(handle); 75 return error; 76 } 77 78 static void evbug_disconnect(struct input_handle *handle) 79 { 80 printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n", handle->dev->phys); 81 82 input_close_device(handle); 83 input_unregister_handle(handle); 84 kfree(handle); 85 } 86 87 static const struct input_device_id evbug_ids[] = { 88 { .driver_info = 1 }, /* Matches all devices */ 89 { }, /* Terminating zero entry */ 90 }; 91 92 MODULE_DEVICE_TABLE(input, evbug_ids); 93 94 static struct input_handler evbug_handler = { 95 .event = evbug_event, 96 .connect = evbug_connect, 97 .disconnect = evbug_disconnect, 98 .name = "evbug", 99 .id_table = evbug_ids, 100 }; 101 102 static int __init evbug_init(void) 103 { 104 return input_register_handler(&evbug_handler); 105 } 106 107 static void __exit evbug_exit(void) 108 { 109 input_unregister_handler(&evbug_handler); 110 } 111 112 module_init(evbug_init); 113 module_exit(evbug_exit); 114