drivers/hid/hid-ortek.c

   1 /*
   2  *  HID driver for Ortek PKB-1700/WKB-2000 (wireless keyboard + mouse trackpad).
   3  *  Fixes LogicalMaximum error in HID report description.
   4  *
   5  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
   6  */
   7
   8 /*
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the Free
  11  * Software Foundation; either version 2 of the License, or (at your option)
  12  * any later version.
  13  */
  14
  15 #include <linux/device.h>
  16 #include <linux/hid.h>
  17 #include <linux/module.h>
  18
  19 #include "hid-ids.h"
  20
  21 static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  22                 unsigned int *rsize)
  23 {
  24         if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
  25                 hid_info(hdev, "Fixing up Ortek WKB-2000 report descriptor\n");
  26                 rdesc[55] = 0x92;
  27         }
  28         return rdesc;
  29 }
  30
  31 static const struct hid_device_id ortek_devices[] = {
  32         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
  33         { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
  34         { }
  35 };
  36 MODULE_DEVICE_TABLE(hid, ortek_devices);
  37
  38 static struct hid_driver ortek_driver = {
  39         .name = "ortek",
  40         .id_table = ortek_devices,
  41         .report_fixup = ortek_report_fixup
  42 };
  43
  44 static int __init ortek_init(void)
  45 {
  46         return hid_register_driver(&ortek_driver);
  47 }
  48
  49 static void __exit ortek_exit(void)
  50 {
  51         hid_unregister_driver(&ortek_driver);
  52 }
  53
  54 module_init(ortek_init);
  55 module_exit(ortek_exit);
  56 MODULE_LICENSE("GPL");