// 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 const __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) }, { HID_USB_DEVICE(USB_VENDOR_ID_TOPRE, USB_DEVICE_ID_TOPRE_REALFORCE_R2_87) }, { } }; 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);