1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * HID driver for various devices which are apparently based on the same chipset
4*4882a593Smuzhiyun * from certain vendor which produces chips that contain wrong LogicalMaximum
5*4882a593Smuzhiyun * value in their HID report descriptor. Currently supported devices are:
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Ortek PKB-1700
8*4882a593Smuzhiyun * Ortek WKB-2000
9*4882a593Smuzhiyun * iHome IMAC-A210S
10*4882a593Smuzhiyun * Skycable wireless presenter
11*4882a593Smuzhiyun *
12*4882a593Smuzhiyun * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
13*4882a593Smuzhiyun * Copyright (c) 2011 Jiri Kosina
14*4882a593Smuzhiyun */
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun /*
17*4882a593Smuzhiyun */
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include <linux/device.h>
20*4882a593Smuzhiyun #include <linux/hid.h>
21*4882a593Smuzhiyun #include <linux/module.h>
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #include "hid-ids.h"
24*4882a593Smuzhiyun
ortek_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)25*4882a593Smuzhiyun static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
26*4882a593Smuzhiyun unsigned int *rsize)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
29*4882a593Smuzhiyun hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
30*4882a593Smuzhiyun rdesc[55] = 0x92;
31*4882a593Smuzhiyun } else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
32*4882a593Smuzhiyun hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
33*4882a593Smuzhiyun rdesc[53] = 0x65;
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun return rdesc;
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun static const struct hid_device_id ortek_devices[] = {
39*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
40*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
41*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
42*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
43*4882a593Smuzhiyun { }
44*4882a593Smuzhiyun };
45*4882a593Smuzhiyun MODULE_DEVICE_TABLE(hid, ortek_devices);
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun static struct hid_driver ortek_driver = {
48*4882a593Smuzhiyun .name = "ortek",
49*4882a593Smuzhiyun .id_table = ortek_devices,
50*4882a593Smuzhiyun .report_fixup = ortek_report_fixup
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun module_hid_driver(ortek_driver);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun MODULE_LICENSE("GPL");
55