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
  19 static 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
  40 static const struct hid_device_id jabra_devices[] = {
  41         { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, HID_ANY_ID) },
  42         { }
  43 };
  44 MODULE_DEVICE_TABLE(hid, jabra_devices);
  45
  46 static struct hid_driver jabra_driver = {
  47         .name = "jabra",
  48         .id_table = jabra_devices,
  49         .input_mapping = jabra_input_mapping,
  50 };
  51 module_hid_driver(jabra_driver);
  52
  53 MODULE_AUTHOR("Niels Skou Olsen <nolsen@jabra.com>");
  54 MODULE_DESCRIPTION("Jabra USB HID Driver");
  55 MODULE_LICENSE("GPL");