1/*
2 * HID driver for various devices which are apparently based on the same chipset
3 * from certain vendor which produces chips that contain wrong LogicalMaximum
4 * value in their HID report descriptor. Currently supported devices are:
5 *
6 * Ortek PKB-1700
7 * Ortek WKB-2000
8 * iHome IMAC-A210S
9 * Skycable wireless presenter
10 *
11 * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
12 * Copyright (c) 2011 Jiri Kosina
13 */
14
15/*
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the Free
18 * Software Foundation; either version 2 of the License, or (at your option)
19 * any later version.
20 */
21
22#include <linux/device.h>
23#include <linux/hid.h>
24#include <linux/module.h>
25
26#include "hid-ids.h"
27
28static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
29 unsigned int *rsize)
30{
31 if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
32 hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
33 rdesc[55] = 0x92;
34 } else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
35 hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
36 rdesc[53] = 0x65;
37 }
38 return rdesc;
39}
40
41static const struct hid_device_id ortek_devices[] = {
42 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
43 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
44 { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
45 { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
46 { }
47};
48MODULE_DEVICE_TABLE(hid, ortek_devices);
49
50static struct hid_driver ortek_driver = {
51 .name = "ortek",
52 .id_table = ortek_devices,
53 .report_fixup = ortek_report_fixup
54};
55module_hid_driver(ortek_driver);
56
57MODULE_LICENSE("GPL");
58