// SPDX-License-Identifier: GPL-2.0-or-later

  /*
   *  HID driver for some belkin "special" devices
   *
   *  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) 2006-2007 Jiri Kosina

   *  Copyright (c) 2008 Jiri Slaby
   */
  
  /*

   */
  
  #include <linux/device.h>
  #include <linux/hid.h>
  #include <linux/module.h>
  
  #include "hid-ids.h"
  
  #define BELKIN_HIDDEV	0x01
  #define BELKIN_WKBD	0x02
  
  #define belkin_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
  					EV_KEY, (c))
  static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  		struct hid_field *field, struct hid_usage *usage,
  		unsigned long **bit, int *max)
  {
  	unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  
  	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
  			!(quirks & BELKIN_WKBD))
  		return 0;
  
  	switch (usage->hid & HID_USAGE) {
  	case 0x03a: belkin_map_key_clear(KEY_SOUND);		break;
  	case 0x03b: belkin_map_key_clear(KEY_CAMERA);		break;
  	case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS);	break;
  	default:
  		return 0;
  	}
  	return 1;
  }
  
  static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
  {
  	unsigned long quirks = id->driver_data;
  	int ret;
  
  	hid_set_drvdata(hdev, (void *)quirks);

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

  		hid_err(hdev, "parse failed
  ");

  		goto err_free;
  	}

  	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
  		((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));

  	if (ret) {

  		hid_err(hdev, "hw start failed
  ");

  		goto err_free;
  	}
  
  	return 0;
  err_free:
  	return ret;
  }
  
  static const struct hid_device_id belkin_devices[] = {
  	{ HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
  		.driver_data = BELKIN_HIDDEV },
  	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
  		.driver_data = BELKIN_WKBD },
  	{ }
  };
  MODULE_DEVICE_TABLE(hid, belkin_devices);
  
  static struct hid_driver belkin_driver = {
  	.name = "belkin",
  	.id_table = belkin_devices,
  	.input_mapping = belkin_input_mapping,
  	.probe = belkin_probe,
  };

  module_hid_driver(belkin_driver);

  MODULE_LICENSE("GPL");