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-kensington.c (1083B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  HID driver for Kensigton Slimblade Trackball
      4 *
      5 *  Copyright (c) 2009 Jiri Kosina
      6 */
      7
      8/*
      9 */
     10
     11#include <linux/device.h>
     12#include <linux/input.h>
     13#include <linux/hid.h>
     14#include <linux/module.h>
     15
     16#include "hid-ids.h"
     17
     18#define ks_map_key(c)	hid_map_usage(hi, usage, bit, max, EV_KEY, (c))
     19
     20static int ks_input_mapping(struct hid_device *hdev, struct hid_input *hi,
     21		struct hid_field *field, struct hid_usage *usage,
     22		unsigned long **bit, int *max)
     23{
     24	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
     25		return 0;
     26
     27	switch (usage->hid & HID_USAGE) {
     28	case 0x01: ks_map_key(BTN_MIDDLE);	break;
     29	case 0x02: ks_map_key(BTN_SIDE);	break;
     30	default:
     31		return 0;
     32	}
     33	return 1;
     34}
     35
     36static const struct hid_device_id ks_devices[] = {
     37	{ HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
     38	{ }
     39};
     40MODULE_DEVICE_TABLE(hid, ks_devices);
     41
     42static struct hid_driver ks_driver = {
     43	.name = "kensington",
     44	.id_table = ks_devices,
     45	.input_mapping = ks_input_mapping,
     46};
     47module_hid_driver(ks_driver);
     48
     49MODULE_LICENSE("GPL");