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
13 MODULE_AUTHOR("Alex Henrie <alexhenrie24@gmail.com>");
14 MODULE_DESCRIPTION("Macally devices");
15 MODULE_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 */
macally_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)21 static __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
32 static 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 };
37 MODULE_DEVICE_TABLE(hid, macally_id_table);
38
39 static struct hid_driver macally_driver = {
40 .name = "macally",
41 .id_table = macally_id_table,
42 .report_fixup = macally_report_fixup,
43 };
44
45 module_hid_driver(macally_driver);
46