[linux-2.6-block.git] / drivers / input / evbug.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (c) 1999-2001 Vojtech Pavlik
 */

/*
 *  Input driver event debug module - dumps all events into syslog
 */

/*
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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 pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"),
	       dev_name(&handle->dev->dev), 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 pr_fmt("Connected device: %s (%s at %s)\n"),
	       dev_name(&dev->dev),
	       dev->name ?: "unknown",
	       dev->phys ?: "unknown");

	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 pr_fmt("Disconnected device: %s\n"),
	       dev_name(&handle->dev->dev));

	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);
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
	10	/*
1da177e4 LT	11	*/
1da177e4 LT	12
da0c4901 JP	13	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
da0c4901 JP	14
1da177e4 LT	15	#include <linux/slab.h>
	16	#include <linux/module.h>
	17	#include <linux/input.h>
	18	#include <linux/init.h>
	19	#include <linux/device.h>
	20
	21	MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
	22	MODULE_DESCRIPTION("Input driver event debug module");
	23	MODULE_LICENSE("GPL");
	24
1da177e4 LT	25	static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
1da177e4 LT	26	{
da0c4901 JP	27	printk(KERN_DEBUG pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"),
da0c4901 JP	28	dev_name(&handle->dev->dev), type, code, value);
1da177e4 LT	29	}
1da177e4 LT	30
5b2a0826 DT	31	static int evbug_connect(struct input_handler handler, struct input_dev dev,
5b2a0826 DT	32	const struct input_device_id *id)
1da177e4 LT	33	{
1da177e4 LT	34	struct input_handle *handle;
5b2a0826	35	int error;
1da177e4	36
5b2a0826 DT	37	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
	38	if (!handle)
	39	return -ENOMEM;
1da177e4 LT	40
	41	handle->dev = dev;
	42	handle->handler = handler;
5b2a0826 DT	43	handle->name = "evbug";
	44
	45	error = input_register_handle(handle);
	46	if (error)
	47	goto err_free_handle;
1da177e4	48
5b2a0826 DT	49	error = input_open_device(handle);
	50	if (error)
	51	goto err_unregister_handle;
1da177e4	52
da0c4901 JP	53	printk(KERN_DEBUG pr_fmt("Connected device: %s (%s at %s)\n"),
	54	dev_name(&dev->dev),
	55	dev->name ?: "unknown",
	56	dev->phys ?: "unknown");
1da177e4	57
5b2a0826 DT	58	return 0;
	59
	60	err_unregister_handle:
	61	input_unregister_handle(handle);
	62	err_free_handle:
	63	kfree(handle);
	64	return error;
1da177e4 LT	65	}
	66
	67	static void evbug_disconnect(struct input_handle *handle)
	68	{
da0c4901 JP	69	printk(KERN_DEBUG pr_fmt("Disconnected device: %s\n"),
da0c4901 JP	70	dev_name(&handle->dev->dev));
1da177e4 LT	71
1da177e4 LT	72	input_close_device(handle);
5b2a0826	73	input_unregister_handle(handle);
1da177e4 LT	74	kfree(handle);
	75	}
	76
66e66118	77	static const struct input_device_id evbug_ids[] = {
1da177e4 LT	78	{ .driver_info = 1 }, /* Matches all devices */
	79	{ }, /* Terminating zero entry */
	80	};
	81
	82	MODULE_DEVICE_TABLE(input, evbug_ids);
	83
	84	static struct input_handler evbug_handler = {
	85	.event = evbug_event,
	86	.connect = evbug_connect,
	87	.disconnect = evbug_disconnect,
	88	.name = "evbug",
	89	.id_table = evbug_ids,
	90	};
	91
	92	static int __init evbug_init(void)
	93	{
4263cf0f	94	return input_register_handler(&evbug_handler);
1da177e4 LT	95	}
	96
	97	static void __exit evbug_exit(void)
	98	{
	99	input_unregister_handler(&evbug_handler);
	100	}
	101
	102	module_init(evbug_init);
	103	module_exit(evbug_exit);