drivers/hid/hid-kye.c

   1 /*
   2  *  HID driver for Kye/Genius devices not fully compliant with HID standard
   3  *
   4  *  Copyright (c) 2009 Jiri Kosina
   5  *  Copyright (c) 2009 Tomas Hanak
   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 /* the fixups that need to be done:
  22  *   - change led usage page to button for extra buttons
  23  *   - report size 8 count 1 must be size 1 count 8 for button bitfield
  24  *   - change the button usage range to 4-7 for the extra buttons
  25  */
  26 static void kye_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  27                 unsigned int rsize)
  28 {
  29         if (rsize >= 74 &&
  30                 rdesc[61] == 0x05 && rdesc[62] == 0x08 &&
  31                 rdesc[63] == 0x19 && rdesc[64] == 0x08 &&
  32                 rdesc[65] == 0x29 && rdesc[66] == 0x0f &&
  33                 rdesc[71] == 0x75 && rdesc[72] == 0x08 &&
  34                 rdesc[73] == 0x95 && rdesc[74] == 0x01) {
  35                 dev_info(&hdev->dev, "fixing up Kye/Genius Ergo Mouse report "
  36                                 "descriptor\n");
  37                 rdesc[62] = 0x09;
  38                 rdesc[64] = 0x04;
  39                 rdesc[66] = 0x07;
  40                 rdesc[72] = 0x01;
  41                 rdesc[74] = 0x08;
  42         }
  43 }
  44
  45 static const struct hid_device_id kye_devices[] = {
  46         { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
  47         { }
  48 };
  49 MODULE_DEVICE_TABLE(hid, kye_devices);
  50
  51 static struct hid_driver kye_driver = {
  52         .name = "kye",
  53         .id_table = kye_devices,
  54         .report_fixup = kye_report_fixup,
  55 };
  56
  57 static int kye_init(void)
  58 {
  59         return hid_register_driver(&kye_driver);
  60 }
  61
  62 static void kye_exit(void)
  63 {
  64         hid_unregister_driver(&kye_driver);
  65 }
  66
  67 module_init(kye_init);
  68 module_exit(kye_exit);
  69 MODULE_LICENSE("GPL");