release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/hid/hid-ortek.c

   1 /*
   2  *  HID driver for Ortek WKB-2000 (wireless keyboard + mouse trackpad).
   3  *  Fixes LogicalMaximum error in USB report description, see
   4  *  http://bugzilla.kernel.org/show_bug.cgi?id=14787
   5  *
   6  *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
   7  */
   8
   9 /*
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  */
  15
  16 #include <linux/device.h>
  17 #include <linux/hid.h>
  18 #include <linux/module.h>
  19
  20 #include "hid-ids.h"
  21
  22 static void ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  23                 unsigned int rsize)
  24 {
  25         if (rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
  26                 dev_info(&hdev->dev, "Fixing up Ortek WKB-2000 "
  27                                 "report descriptor.\n");
  28                 rdesc[55] = 0x92;
  29         }
  30 }
  31
  32 static const struct hid_device_id ortek_devices[] = {
  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");