xref: /openbmc/linux/drivers/hid/hid-macally.c (revision d71c8008)
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