// 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");