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a109d5c4 HS |
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) }, | |
dbf56d2f AM |
39 | { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE, |
40 | USB_DEVICE_ID_TOPRE_REALFORCE_R2_87) }, | |
a109d5c4 HS |
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); |