Quelle  hid-jabra.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Jabra USB HID Driver
 *
 *  Copyright (c) 2017 Niels Skou Olsen <nolsen@jabra.com>
 */

/*
 */

#include <linux/hid.h>
#include <linux/module.h>

#include "hid-ids.h"

#define HID_UP_VENDOR_DEFINED_MIN 0xff000000
#define HID_UP_VENDOR_DEFINED_MAX 0xffff0000

static int jabra_input_mapping(struct hid_device *hdev,
          struct hid_input *hi,
          struct hid_field *field,
          struct hid_usage *usage,
          unsigned long **bit, int *max)
{
 int is_vendor_defined =
  ((usage->hid & HID_USAGE_PAGE) >= HID_UP_VENDOR_DEFINED_MIN &&
   (usage->hid & HID_USAGE_PAGE) <= HID_UP_VENDOR_DEFINED_MAX);

 dbg_hid("hid=0x%08x appl=0x%08x coll_idx=0x%02x usage_idx=0x%02x: %s\n",
  usage->hid,
  field->application,
  usage->collection_index,
  usage->usage_index,
  is_vendor_defined ? "ignored" : "defaulted");

 /* Ignore vendor defined usages, default map standard usages */
 return is_vendor_defined ? -1 : 0;
}

static const struct hid_device_id jabra_devices[] = {
 { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, HID_ANY_ID) },
 { }
};
MODULE_DEVICE_TABLE(hid, jabra_devices);

static struct hid_driver jabra_driver = {
 .name = "jabra",
 .id_table = jabra_devices,
 .input_mapping = jabra_input_mapping,
};
module_hid_driver(jabra_driver);

MODULE_AUTHOR("Niels Skou Olsen ");
MODULE_DESCRIPTION("Jabra USB HID Driver");
MODULE_LICENSE("GPL");