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 | |
25 | static __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 | |
38 | static 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 | }; |
45 | MODULE_DEVICE_TABLE(hid, ortek_devices); |
46 | |
47 | static struct hid_driver ortek_driver = { |
48 | .name = "ortek" , |
49 | .id_table = ortek_devices, |
50 | .report_fixup = ortek_report_fixup |
51 | }; |
52 | module_hid_driver(ortek_driver); |
53 | |
54 | MODULE_LICENSE("GPL" ); |
55 | |