1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * HID driver for Kensington 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_DESCRIPTION("HID driver for Kensington Slimblade Trackball");
50MODULE_LICENSE("GPL");
51