// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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
*/
/*
*/
#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");
