LXR linux/drivers/hid/hid-jabra.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Jabra USB HID Driver
   4 *
   5 *  Copyright (c) 2017 Niels Skou Olsen <nolsen@jabra.com>
   6 */
   7
   8/*
   9 */
  10
  11#include <linux/hid.h>
  12#include <linux/module.h>
  13
  14#include "hid-ids.h"
  15
  16#define HID_UP_VENDOR_DEFINED_MIN       0xff000000
  17#define HID_UP_VENDOR_DEFINED_MAX       0xffff0000
  18
  19static int jabra_input_mapping(struct hid_device *hdev,
  20                               struct hid_input *hi,
  21                               struct hid_field *field,
  22                               struct hid_usage *usage,
  23                               unsigned long **bit, int *max)
  24{
  25        int is_vendor_defined =
  26                ((usage->hid & HID_USAGE_PAGE) >= HID_UP_VENDOR_DEFINED_MIN &&
  27                 (usage->hid & HID_USAGE_PAGE) <= HID_UP_VENDOR_DEFINED_MAX);
  28
  29        dbg_hid("hid=0x%08x appl=0x%08x coll_idx=0x%02x usage_idx=0x%02x: %s\n",
  30                usage->hid,
  31                field->application,
  32                usage->collection_index,
  33                usage->usage_index,
  34                is_vendor_defined ? "ignored" : "defaulted");
  35
  36        /* Ignore vendor defined usages, default map standard usages */
  37        return is_vendor_defined ? -1 : 0;
  38}
  39
  40static const struct hid_device_id jabra_devices[] = {
  41        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, HID_ANY_ID) },
  42        { }
  43};
  44MODULE_DEVICE_TABLE(hid, jabra_devices);
  45
  46static struct hid_driver jabra_driver = {
  47        .name = "jabra",
  48        .id_table = jabra_devices,
  49        .input_mapping = jabra_input_mapping,
  50};
  51module_hid_driver(jabra_driver);
  52
  53MODULE_AUTHOR("Niels Skou Olsen <nolsen@jabra.com>");
  54MODULE_DESCRIPTION("Jabra USB HID Driver");
  55MODULE_LICENSE("GPL");
  56