1a109d5c4SHarry Stern // SPDX-License-Identifier: GPL-2.0+
2a109d5c4SHarry Stern /*
3a109d5c4SHarry Stern * HID driver for Topre REALFORCE Keyboards
4a109d5c4SHarry Stern *
5a109d5c4SHarry Stern * Copyright (c) 2022 Harry Stern <harry@harrystern.net>
6a109d5c4SHarry Stern *
7a109d5c4SHarry Stern * Based on the hid-macally driver
8a109d5c4SHarry Stern */
9a109d5c4SHarry Stern
10a109d5c4SHarry Stern #include <linux/hid.h>
11a109d5c4SHarry Stern #include <linux/module.h>
12a109d5c4SHarry Stern
13a109d5c4SHarry Stern #include "hid-ids.h"
14a109d5c4SHarry Stern
15a109d5c4SHarry Stern MODULE_AUTHOR("Harry Stern <harry@harrystern.net>");
16a109d5c4SHarry Stern MODULE_DESCRIPTION("REALFORCE R2 Keyboard driver");
17a109d5c4SHarry Stern MODULE_LICENSE("GPL");
18a109d5c4SHarry Stern
19a109d5c4SHarry Stern /*
20a109d5c4SHarry Stern * Fix the REALFORCE R2's non-boot interface's report descriptor to match the
21a109d5c4SHarry Stern * events it's actually sending. It claims to send array events but is instead
22a109d5c4SHarry Stern * sending variable events.
23a109d5c4SHarry Stern */
topre_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int * rsize)24a109d5c4SHarry Stern static __u8 *topre_report_fixup(struct hid_device *hdev, __u8 *rdesc,
25a109d5c4SHarry Stern unsigned int *rsize)
26a109d5c4SHarry Stern {
27a109d5c4SHarry Stern if (*rsize >= 119 && rdesc[69] == 0x29 && rdesc[70] == 0xe7 &&
28a109d5c4SHarry Stern rdesc[71] == 0x81 && rdesc[72] == 0x00) {
29a109d5c4SHarry Stern hid_info(hdev,
30a109d5c4SHarry Stern "fixing up Topre REALFORCE keyboard report descriptor\n");
31a109d5c4SHarry Stern rdesc[72] = 0x02;
32a109d5c4SHarry Stern }
33a109d5c4SHarry Stern return rdesc;
34a109d5c4SHarry Stern }
35a109d5c4SHarry Stern
36a109d5c4SHarry Stern static const struct hid_device_id topre_id_table[] = {
37a109d5c4SHarry Stern { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE,
38a109d5c4SHarry Stern USB_DEVICE_ID_TOPRE_REALFORCE_R2_108) },
39*dbf56d2fSAlessandro Manca { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE,
40*dbf56d2fSAlessandro Manca USB_DEVICE_ID_TOPRE_REALFORCE_R2_87) },
41a109d5c4SHarry Stern { }
42a109d5c4SHarry Stern };
43a109d5c4SHarry Stern MODULE_DEVICE_TABLE(hid, topre_id_table);
44a109d5c4SHarry Stern
45a109d5c4SHarry Stern static struct hid_driver topre_driver = {
46a109d5c4SHarry Stern .name = "topre",
47a109d5c4SHarry Stern .id_table = topre_id_table,
48a109d5c4SHarry Stern .report_fixup = topre_report_fixup,
49a109d5c4SHarry Stern };
50a109d5c4SHarry Stern
51a109d5c4SHarry Stern module_hid_driver(topre_driver);
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