1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * HID driver for Topre REALFORCE Keyboards |
4 | * |
5 | * Copyright (c) 2022 Harry Stern <harry@harrystern.net> |
6 | * |
7 | * Based on the hid-macally driver |
8 | */ |
9 | |
10 | #include <linux/hid.h> |
11 | #include <linux/module.h> |
12 | |
13 | #include "hid-ids.h" |
14 | |
15 | MODULE_AUTHOR("Harry Stern <harry@harrystern.net>" ); |
16 | MODULE_DESCRIPTION("REALFORCE R2 Keyboard driver" ); |
17 | MODULE_LICENSE("GPL" ); |
18 | |
19 | /* |
20 | * Fix the REALFORCE R2's non-boot interface's report descriptor to match the |
21 | * events it's actually sending. It claims to send array events but is instead |
22 | * sending variable events. |
23 | */ |
24 | static __u8 *topre_report_fixup(struct hid_device *hdev, __u8 *rdesc, |
25 | unsigned int *rsize) |
26 | { |
27 | if (*rsize >= 119 && rdesc[69] == 0x29 && rdesc[70] == 0xe7 && |
28 | rdesc[71] == 0x81 && rdesc[72] == 0x00) { |
29 | hid_info(hdev, |
30 | "fixing up Topre REALFORCE keyboard report descriptor\n" ); |
31 | rdesc[72] = 0x02; |
32 | } |
33 | return rdesc; |
34 | } |
35 | |
36 | static const struct hid_device_id topre_id_table[] = { |
37 | { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE, |
38 | USB_DEVICE_ID_TOPRE_REALFORCE_R2_108) }, |
39 | { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE, |
40 | USB_DEVICE_ID_TOPRE_REALFORCE_R2_87) }, |
41 | { } |
42 | }; |
43 | MODULE_DEVICE_TABLE(hid, topre_id_table); |
44 | |
45 | static struct hid_driver topre_driver = { |
46 | .name = "topre" , |
47 | .id_table = topre_id_table, |
48 | .report_fixup = topre_report_fixup, |
49 | }; |
50 | |
51 | module_hid_driver(topre_driver); |
52 | |