| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 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 | |
| 28 | static __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 | |
| 41 | static 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 | }; |
| 48 | MODULE_DEVICE_TABLE(hid, ortek_devices); |
| 49 | |
| 50 | static struct hid_driver ortek_driver = { |
| 51 | .name = "ortek", |
| 52 | .id_table = ortek_devices, |
| 53 | .report_fixup = ortek_report_fixup |
| 54 | }; |
| 55 | module_hid_driver(ortek_driver); |
| 56 | |
| 57 | MODULE_LICENSE("GPL"); |