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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* HID driver for various devices which are apparently based on the same chipset
* from certain vendor which produces chips that contain wrong LogicalMaximum
* value in their HID report descriptor. Currently supported devices are:
*
* Ortek PKB-1700
* Ortek WKB-2000
* iHome IMAC-A210S
* Skycable wireless presenter
*
* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
* Copyright (c) 2011 Jiri Kosina
*/
/*
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
static __u8 *ortek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x01) {
hid_info(hdev, "Fixing up logical maximum in report descriptor (Ortek)\n");
rdesc[55] = 0x92;
} else if (*rsize >= 54 && rdesc[52] == 0x25 && rdesc[53] == 0x01) {
hid_info(hdev, "Fixing up logical maximum in report descriptor (Skycable)\n");
rdesc[53] = 0x65;
}
return rdesc;
}
static const struct hid_device_id ortek_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
{ }
};
MODULE_DEVICE_TABLE(hid, ortek_devices);
static struct hid_driver ortek_driver = {
.name = "ortek",
.id_table = ortek_devices,
.report_fixup = ortek_report_fixup
};
module_hid_driver(ortek_driver);
MODULE_LICENSE("GPL");
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