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