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

   1/*
   2 *  Jabra USB HID Driver
   3 *
   4 *  Copyright (c) 2017 Niels Skou Olsen <nolsen@jabra.com>
   5 */
   6
   7/*
   8 * This program is free software; you can redistribute it and/or modify it
   9 * under the terms of the GNU General Public License as published by the Free
  10 * Software Foundation; either version 2 of the License, or (at your option)
  11 * any later version.
  12 */
  13
  14#include <linux/hid.h>
  15#include <linux/module.h>
  16
  17#include "hid-ids.h"
  18
  19#define HID_UP_VENDOR_DEFINED_MIN       0xff000000
  20#define HID_UP_VENDOR_DEFINED_MAX       0xffff0000
  21
  22static int jabra_input_mapping(struct hid_device *hdev,
  23                               struct hid_input *hi,
  24                               struct hid_field *field,
  25                               struct hid_usage *usage,
  26                               unsigned long **bit, int *max)
  27{
  28        int is_vendor_defined =
  29                ((usage->hid & HID_USAGE_PAGE) >= HID_UP_VENDOR_DEFINED_MIN &&
  30                 (usage->hid & HID_USAGE_PAGE) <= HID_UP_VENDOR_DEFINED_MAX);
  31
  32        dbg_hid("hid=0x%08x appl=0x%08x coll_idx=0x%02x usage_idx=0x%02x: %s\n",
  33                usage->hid,
  34                field->application,
  35                usage->collection_index,
  36                usage->usage_index,
  37                is_vendor_defined ? "ignored" : "defaulted");
  38
  39        /* Ignore vendor defined usages, default map standard usages */
  40        return is_vendor_defined ? -1 : 0;
  41}
  42
  43static const struct hid_device_id jabra_devices[] = {
  44        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, HID_ANY_ID) },
  45        { }
  46};
  47MODULE_DEVICE_TABLE(hid, jabra_devices);
  48
  49static struct hid_driver jabra_driver = {
  50        .name = "jabra",
  51        .id_table = jabra_devices,
  52        .input_mapping = jabra_input_mapping,
  53};
  54module_hid_driver(jabra_driver);
  55
  56MODULE_AUTHOR("Niels Skou Olsen <nolsen@jabra.com>");
  57MODULE_DESCRIPTION("Jabra USB HID Driver");
  58MODULE_LICENSE("GPL");
  59