mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 16:54:20 +08:00
5b2a08262a
- consolidate code for binding handlers to a device - return error codes from handlers connect() methods back to input core and log failures Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
/*
|
|
* $Id: evbug.c,v 1.10 2001/09/25 10:12:07 vojtech Exp $
|
|
*
|
|
* Copyright (c) 1999-2001 Vojtech Pavlik
|
|
*/
|
|
|
|
/*
|
|
* Input driver event debug module - dumps all events into syslog
|
|
*/
|
|
|
|
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* Should you need to contact me, the author, you can do so either by
|
|
* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
|
|
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <linux/module.h>
|
|
#include <linux/input.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
|
|
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
|
|
MODULE_DESCRIPTION("Input driver event debug module");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
|
|
{
|
|
printk(KERN_DEBUG "evbug.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n",
|
|
handle->dev->phys, type, code, value);
|
|
}
|
|
|
|
static int evbug_connect(struct input_handler *handler, struct input_dev *dev,
|
|
const struct input_device_id *id)
|
|
{
|
|
struct input_handle *handle;
|
|
int error;
|
|
|
|
handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
|
|
if (!handle)
|
|
return -ENOMEM;
|
|
|
|
handle->dev = dev;
|
|
handle->handler = handler;
|
|
handle->name = "evbug";
|
|
|
|
error = input_register_handle(handle);
|
|
if (error)
|
|
goto err_free_handle;
|
|
|
|
error = input_open_device(handle);
|
|
if (error)
|
|
goto err_unregister_handle;
|
|
|
|
printk(KERN_DEBUG "evbug.c: Connected device: \"%s\", %s\n", dev->name, dev->phys);
|
|
|
|
return 0;
|
|
|
|
err_unregister_handle:
|
|
input_unregister_handle(handle);
|
|
err_free_handle:
|
|
kfree(handle);
|
|
return error;
|
|
}
|
|
|
|
static void evbug_disconnect(struct input_handle *handle)
|
|
{
|
|
printk(KERN_DEBUG "evbug.c: Disconnected device: %s\n", handle->dev->phys);
|
|
|
|
input_close_device(handle);
|
|
input_unregister_handle(handle);
|
|
kfree(handle);
|
|
}
|
|
|
|
static const struct input_device_id evbug_ids[] = {
|
|
{ .driver_info = 1 }, /* Matches all devices */
|
|
{ }, /* Terminating zero entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(input, evbug_ids);
|
|
|
|
static struct input_handler evbug_handler = {
|
|
.event = evbug_event,
|
|
.connect = evbug_connect,
|
|
.disconnect = evbug_disconnect,
|
|
.name = "evbug",
|
|
.id_table = evbug_ids,
|
|
};
|
|
|
|
static int __init evbug_init(void)
|
|
{
|
|
return input_register_handler(&evbug_handler);
|
|
}
|
|
|
|
static void __exit evbug_exit(void)
|
|
{
|
|
input_unregister_handler(&evbug_handler);
|
|
}
|
|
|
|
module_init(evbug_init);
|
|
module_exit(evbug_exit);
|