1// SPDX-License-Identifier: GPL-2.0+
2/*
3 *  HID driver for quirky Macally devices
4 *
5 *  Copyright (c) 2019 Alex Henrie <alexhenrie24@gmail.com>
6 */
7
8#include <linux/hid.h>
9#include <linux/module.h>
10
11#include "hid-ids.h"
12
13MODULE_AUTHOR("Alex Henrie <alexhenrie24@gmail.com>");
14MODULE_DESCRIPTION("Macally devices");
15MODULE_LICENSE("GPL");
16
17/*
18 * The Macally ikey keyboard says that its logical and usage maximums are both
19 * 101, but the power key is 102 and the equals key is 103
20 */
21static __u8 *macally_report_fixup(struct hid_device *hdev, __u8 *rdesc,
22				 unsigned int *rsize)
23{
24	if (*rsize >= 60 && rdesc[53] == 0x65 && rdesc[59] == 0x65) {
25		hid_info(hdev,
26			"fixing up Macally ikey keyboard report descriptor\n");
27		rdesc[53] = rdesc[59] = 0x67;
28	}
29	return rdesc;
30}
31
32static const struct hid_device_id macally_id_table[] = {
33	{ HID_USB_DEVICE(USB_VENDOR_ID_SOLID_YEAR,
34			 USB_DEVICE_ID_MACALLY_IKEY_KEYBOARD) },
35	{ }
36};
37MODULE_DEVICE_TABLE(hid, macally_id_table);
38
39static struct hid_driver macally_driver = {
40	.name			= "macally",
41	.id_table		= macally_id_table,
42	.report_fixup		= macally_report_fixup,
43};
44
45module_hid_driver(macally_driver);
46