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 | |
20 | static 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 | |
36 | static const struct hid_device_id ks_devices[] = { |
37 | { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) }, |
38 | { } |
39 | }; |
40 | MODULE_DEVICE_TABLE(hid, ks_devices); |
41 | |
42 | static struct hid_driver ks_driver = { |
43 | .name = "kensington" , |
44 | .id_table = ks_devices, |
45 | .input_mapping = ks_input_mapping, |
46 | }; |
47 | module_hid_driver(ks_driver); |
48 | |
49 | MODULE_LICENSE("GPL" ); |
50 | |