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-monterey.c (1729B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  HID driver for some monterey "special" devices
      4 *
      5 *  Copyright (c) 1999 Andreas Gal
      6 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
      7 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
      8 *  Copyright (c) 2006-2007 Jiri Kosina
      9 *  Copyright (c) 2008 Jiri Slaby
     10 */
     11
     12/*
     13 */
     14
     15#include <linux/device.h>
     16#include <linux/hid.h>
     17#include <linux/module.h>
     18
     19#include "hid-ids.h"
     20
     21static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,
     22		unsigned int *rsize)
     23{
     24	if (*rsize >= 31 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {
     25		hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");
     26		rdesc[30] = 0x0c;
     27	}
     28	return rdesc;
     29}
     30
     31#define mr_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
     32					EV_KEY, (c))
     33static int mr_input_mapping(struct hid_device *hdev, struct hid_input *hi,
     34		struct hid_field *field, struct hid_usage *usage,
     35		unsigned long **bit, int *max)
     36{
     37	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
     38		return 0;
     39
     40	switch (usage->hid & HID_USAGE) {
     41	case 0x156: mr_map_key_clear(KEY_WORDPROCESSOR);	break;
     42	case 0x157: mr_map_key_clear(KEY_SPREADSHEET);		break;
     43	case 0x158: mr_map_key_clear(KEY_PRESENTATION);		break;
     44	case 0x15c: mr_map_key_clear(KEY_STOP);			break;
     45	default:
     46		return 0;
     47	}
     48	return 1;
     49}
     50
     51static const struct hid_device_id mr_devices[] = {
     52	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
     53	{ }
     54};
     55MODULE_DEVICE_TABLE(hid, mr_devices);
     56
     57static struct hid_driver mr_driver = {
     58	.name = "monterey",
     59	.id_table = mr_devices,
     60	.report_fixup = mr_report_fixup,
     61	.input_mapping = mr_input_mapping,
     62};
     63module_hid_driver(mr_driver);
     64
     65MODULE_LICENSE("GPL");