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 dev_name(&handle->dev->dev), 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 at %s)\n", 68 dev_name(&dev->dev), 69 dev->name ?: "unknown", 70 dev->phys ?: "unknown"); 71 72 return 0; 73 74 err_unregister_handle: 75 input_unregister_handle(handle); 76 err_free_handle: 77 kfree(handle); 78 return error; 79 } 80 81 static void evbug_disconnect(struct input_handle *handle) 82 { 83 printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n", 84 dev_name(&handle->dev->dev)); 85 86 input_close_device(handle); 87 input_unregister_handle(handle); 88 kfree(handle); 89 } 90 91 static const struct input_device_id evbug_ids[] = { 92 { .driver_info = 1 }, /* Matches all devices */ 93 { }, /* Terminating zero entry */ 94 }; 95 96 MODULE_DEVICE_TABLE(input, evbug_ids); 97 98 static 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 }; 105 106 static int __init evbug_init(void) 107 { 108 return input_register_handler(&evbug_handler); 109 } 110 111 static void __exit evbug_exit(void) 112 { 113 input_unregister_handler(&evbug_handler); 114 } 115 116 module_init(evbug_init); 117 module_exit(evbug_exit); 118