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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * HID driver for various devices which are apparently based on the same chipset4 * from certain vendor which produces chips that contain wrong LogicalMaximum5 * value in their HID report descriptor. Currently supported devices are:6 *7 * Ortek PKB-17008 * Ortek WKB-20009 * iHome IMAC-A210S10 * Skycable wireless presenter11 *12 * Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>13 * Copyright (c) 2011 Jiri Kosina14 */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 const __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_fixup51};52module_hid_driver(ortek_driver);53 54MODULE_DESCRIPTION("HID driver for Ortek PKB-1700/WKB-2000/Skycable wireless keyboard and mouse trackpad");55MODULE_LICENSE("GPL");56