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 *    Skycable wireless presenter
 9 *
10 *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
11 *  Copyright (c) 2011 Jiri Kosina
12 */
13
14/*
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the Free
17 * Software Foundation; either version 2 of the License, or (at your option)
18 * any later version.
19 */
20
21#include <linux/device.h>
22#include <linux/hid.h>
23#include <linux/module.h>
24
25#include "hid-ids.h"
26
27static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
28		unsigned int *rsize)
29{
30	if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
31		hid_info(hdev, "Fixing up logical minimum in report descriptor (Ortek)\n");
32		rdesc[55] = 0x92;
33	} else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
34		hid_info(hdev, "Fixing up logical minimum in report descriptor (Skycable)\n");
35		rdesc[53] = 0x65;
36	}
37	return rdesc;
38}
39
40static const struct hid_device_id ortek_devices[] = {
41	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
42	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
 
43	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
44	{ }
45};
46MODULE_DEVICE_TABLE(hid, ortek_devices);
47
48static struct hid_driver ortek_driver = {
49	.name = "ortek",
50	.id_table = ortek_devices,
51	.report_fixup = ortek_report_fixup
52};
 
53
54static int __init ortek_init(void)
55{
56	return hid_register_driver(&ortek_driver);
57}
58
59static void __exit ortek_exit(void)
60{
61	hid_unregister_driver(&ortek_driver);
62}
63
64module_init(ortek_init);
65module_exit(ortek_exit);
66MODULE_LICENSE("GPL");

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 *  HID driver for various devices which are apparently based on the same chipset
 4 *  from certain vendor which produces chips that contain wrong LogicalMaximum
 5 *  value in their HID report descriptor. Currently supported devices are:
 6 *
 7 *    Ortek PKB-1700
 8 *    Ortek WKB-2000
 9 *    iHome IMAC-A210S
10 *    Skycable wireless presenter
11 *
12 *  Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
13 *  Copyright (c) 2011 Jiri Kosina
14 */
15
16/*
 
 
 
 
17 */
18
19#include <linux/device.h>
20#include <linux/hid.h>
21#include <linux/module.h>
22
23#include "hid-ids.h"
24
25static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
26		unsigned int *rsize)
27{
28	if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
29		hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
30		rdesc[55] = 0x92;
31	} else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
32		hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
33		rdesc[53] = 0x65;
34	}
35	return rdesc;
36}
37
38static const struct hid_device_id ortek_devices[] = {
39	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
40	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
41	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
42	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
43	{ }
44};
45MODULE_DEVICE_TABLE(hid, ortek_devices);
46
47static struct hid_driver ortek_driver = {
48	.name = "ortek",
49	.id_table = ortek_devices,
50	.report_fixup = ortek_report_fixup
51};
52module_hid_driver(ortek_driver);
53
 
 
 
 
 
 
 
 
 
 
 
 
54MODULE_LICENSE("GPL");