cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hid-semitek.c (1072B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  HID driver for Semitek keyboards
      4 *
      5 *  Copyright (c) 2021 Benjamin Moody
      6 */
      7
      8#include <linux/device.h>
      9#include <linux/hid.h>
     10#include <linux/module.h>
     11
     12#include "hid-ids.h"
     13
     14static __u8 *semitek_report_fixup(struct hid_device *hdev, __u8 *rdesc,
     15                                  unsigned int *rsize)
     16{
     17	/* In the report descriptor for interface 2, fix the incorrect
     18	   description of report ID 0x04 (the report contains a
     19	   bitmask, not an array of keycodes.) */
     20	if (*rsize == 0xcb && rdesc[0x83] == 0x81 && rdesc[0x84] == 0x00) {
     21		hid_info(hdev, "fixing up Semitek report descriptor\n");
     22		rdesc[0x84] = 0x02;
     23	}
     24	return rdesc;
     25}
     26
     27static const struct hid_device_id semitek_devices[] = {
     28	{ HID_USB_DEVICE(USB_VENDOR_ID_SEMITEK, USB_DEVICE_ID_SEMITEK_KEYBOARD) },
     29	{ }
     30};
     31MODULE_DEVICE_TABLE(hid, semitek_devices);
     32
     33static struct hid_driver semitek_driver = {
     34	.name = "semitek",
     35	.id_table = semitek_devices,
     36	.report_fixup = semitek_report_fixup,
     37};
     38module_hid_driver(semitek_driver);
     39
     40MODULE_LICENSE("GPL");