[linux-2.6-block.git] / drivers / hid / hid-generic.c

/*
 *  HID support for Linux
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 *  Copyright (c) 2007-2008 Oliver Neukum
 *  Copyright (c) 2006-2012 Jiri Kosina
 *  Copyright (c) 2012 Henrik Rydberg
 */

/*
 * 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.
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <asm/unaligned.h>
#include <asm/byteorder.h>

#include <linux/hid.h>

static struct hid_driver hid_generic;

static int __check_hid_generic(struct device_driver *drv, void *data)
{
	struct hid_driver *hdrv = to_hid_driver(drv);
	struct hid_device *hdev = data;

	if (hdrv == &hid_generic)
		return 0;

	return hid_match_device(hdev, hdrv) != NULL;
}

static bool hid_generic_match(struct hid_device *hdev,
			      bool ignore_special_driver)
{
	if (ignore_special_driver)
		return true;

	if (hdev->quirks & HID_QUIRK_HAVE_SPECIAL_DRIVER)
		return false;

	/*
	 * If any other driver wants the device, leave the device to this other
	 * driver.
	 */
	if (bus_for_each_drv(&hid_bus_type, NULL, hdev, __check_hid_generic))
		return false;

	return true;
}

static int hid_generic_probe(struct hid_device *hdev,
			     const struct hid_device_id *id)
{
	int ret;

	hdev->quirks |= HID_QUIRK_INPUT_PER_APP;

	ret = hid_parse(hdev);
	if (ret)
		return ret;

	return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
}

static const struct hid_device_id hid_table[] = {
	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) },
	{ }
};
MODULE_DEVICE_TABLE(hid, hid_table);

static struct hid_driver hid_generic = {
	.name = "hid-generic",
	.id_table = hid_table,
	.match = hid_generic_match,
	.probe = hid_generic_probe,
};
module_hid_driver(hid_generic);

MODULE_AUTHOR("Henrik Rydberg");
MODULE_DESCRIPTION("HID generic driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
8215d557 HR	1	/*
	2	* HID support for Linux
	3	*
	4	* Copyright (c) 1999 Andreas Gal
	5	* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
	6	* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
	7	* Copyright (c) 2007-2008 Oliver Neukum
	8	* Copyright (c) 2006-2012 Jiri Kosina
	9	* Copyright (c) 2012 Henrik Rydberg
	10	*/
	11
	12	/*
	13	* This program is free software; you can redistribute it and/or modify it
	14	* under the terms of the GNU General Public License as published by the Free
	15	* Software Foundation; either version 2 of the License, or (at your option)
	16	* any later version.
	17	*/
	18
	19	#include <linux/module.h>
	20	#include <linux/slab.h>
	21	#include <linux/kernel.h>
	22	#include <asm/unaligned.h>
	23	#include <asm/byteorder.h>
	24
	25	#include <linux/hid.h>
	26
e04a0442 BT	27	static struct hid_driver hid_generic;
e04a0442 BT	28
e04a0442 BT	29	static int __check_hid_generic(struct device_driver drv, void data)
	30	{
	31	struct hid_driver *hdrv = to_hid_driver(drv);
	32	struct hid_device *hdev = data;
	33
	34	if (hdrv == &hid_generic)
	35	return 0;
	36
	37	return hid_match_device(hdev, hdrv) != NULL;
	38	}
	39
	40	static bool hid_generic_match(struct hid_device *hdev,
	41	bool ignore_special_driver)
	42	{
	43	if (ignore_special_driver)
	44	return true;
	45
	46	if (hdev->quirks & HID_QUIRK_HAVE_SPECIAL_DRIVER)
	47	return false;
	48
	49	/*
	50	* If any other driver wants the device, leave the device to this other
	51	* driver.
	52	*/
	53	if (bus_for_each_drv(&hid_bus_type, NULL, hdev, __check_hid_generic))
	54	return false;
	55
	56	return true;
	57	}
	58
f07b3c1d BT	59	static int hid_generic_probe(struct hid_device *hdev,
	60	const struct hid_device_id *id)
	61	{
	62	int ret;
	63
	64	hdev->quirks \|= HID_QUIRK_INPUT_PER_APP;
	65
	66	ret = hid_parse(hdev);
	67	if (ret)
	68	return ret;
	69
	70	return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	71	}
	72
8215d557	73	static const struct hid_device_id hid_table[] = {
e04a0442	74	{ HID_DEVICE(HID_BUS_ANY, HID_GROUP_ANY, HID_ANY_ID, HID_ANY_ID) },
8215d557 HR	75	{ }
	76	};
	77	MODULE_DEVICE_TABLE(hid, hid_table);
	78
	79	static struct hid_driver hid_generic = {
	80	.name = "hid-generic",
	81	.id_table = hid_table,
e04a0442	82	.match = hid_generic_match,
f07b3c1d	83	.probe = hid_generic_probe,
8215d557	84	};
f425458e	85	module_hid_driver(hid_generic);
8215d557 HR	86
	87	MODULE_AUTHOR("Henrik Rydberg");
	88	MODULE_DESCRIPTION("HID generic driver");
	89	MODULE_LICENSE("GPL");