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// SPDX-License-Identifier: GPL-2.0+
/*
* HID driver for Topre REALFORCE Keyboards
*
* Copyright (c) 2022 Harry Stern <harry@harrystern.net>
*
* Based on the hid-macally driver
*/
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
MODULE_AUTHOR("Harry Stern <harry@harrystern.net>");
MODULE_DESCRIPTION("REALFORCE R2 Keyboard driver");
MODULE_LICENSE("GPL");
/*
* Fix the REALFORCE R2's non-boot interface's report descriptor to match the
* events it's actually sending. It claims to send array events but is instead
* sending variable events.
*/
static __u8 *topre_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
if (*rsize >= 119 && rdesc[69] == 0x29 && rdesc[70] == 0xe7 &&
rdesc[71] == 0x81 && rdesc[72] == 0x00) {
hid_info(hdev,
"fixing up Topre REALFORCE keyboard report descriptor\n");
rdesc[72] = 0x02;
}
return rdesc;
}
static const struct hid_device_id topre_id_table[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_TOPRE,
USB_DEVICE_ID_TOPRE_REALFORCE_R2_108) },
{ }
};
MODULE_DEVICE_TABLE(hid, topre_id_table);
static struct hid_driver topre_driver = {
.name = "topre",
.id_table = topre_id_table,
.report_fixup = topre_report_fixup,
};
module_hid_driver(topre_driver);
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