tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * HID driver for Elecom BM084 (bluetooth mouse).
3 * Removes a non-existing horizontal wheel from
4 * the HID descriptor.
5 * (This module is based on "hid-ortek".)
6 *
7 * Copyright (c) 2010 Richard Nauber <Richard.Nauber@gmail.com>
8 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 */
16
17#include <linux/device.h>
18#include <linux/hid.h>
19#include <linux/module.h>
20
21#include "hid-ids.h"
22
23static __u8 *elecom_report_fixup(struct hid_device *hdev, __u8 *rdesc,
24 unsigned int *rsize)
25{
26 if (*rsize >= 48 && rdesc[46] == 0x05 && rdesc[47] == 0x0c) {
27 dev_info(&hdev->dev, "Fixing up Elecom BM084 "
28 "report descriptor.\n");
29 rdesc[47] = 0x00;
30 }
31 return rdesc;
32}
33
34static const struct hid_device_id elecom_devices[] = {
35 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084)},
36 { }
37};
38MODULE_DEVICE_TABLE(hid, elecom_devices);
39
40static struct hid_driver elecom_driver = {
41 .name = "elecom",
42 .id_table = elecom_devices,
43 .report_fixup = elecom_report_fixup
44};
45
46static int __init elecom_init(void)
47{
48 return hid_register_driver(&elecom_driver);
49}
50
51static void __exit elecom_exit(void)
52{
53 hid_unregister_driver(&elecom_driver);
54}
55
56module_init(elecom_init);
57module_exit(elecom_exit);
58MODULE_LICENSE("GPL");