1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * HID driver for Xin-Mo devices, currently only the Dual Arcade controller. |
4 | * Fixes the negative axis event values (the devices sends -2) to match the |
5 | * logical axis minimum of the HID report descriptor (the report announces |
6 | * -1). It is needed because hid-input discards out of bounds values. |
7 | * (This module is based on "hid-saitek" and "hid-lg".) |
8 | * |
9 | * Copyright (c) 2013 Olivier Scherler |
10 | */ |
11 | |
12 | /* |
13 | */ |
14 | |
15 | #include <linux/device.h> |
16 | #include <linux/hid.h> |
17 | #include <linux/module.h> |
18 | #include <linux/kernel.h> |
19 | |
20 | #include "hid-ids.h" |
21 | |
22 | /* |
23 | * Fix negative events that are out of bounds. |
24 | */ |
25 | static int xinmo_event(struct hid_device *hdev, struct hid_field *field, |
26 | struct hid_usage *usage, __s32 value) |
27 | { |
28 | switch (usage->code) { |
29 | case ABS_X: |
30 | case ABS_Y: |
31 | case ABS_Z: |
32 | case ABS_RX: |
33 | if (value < -1) { |
34 | input_event(dev: field->hidinput->input, type: usage->type, |
35 | code: usage->code, value: -1); |
36 | return 1; |
37 | } |
38 | break; |
39 | } |
40 | |
41 | return 0; |
42 | } |
43 | |
44 | static const struct hid_device_id xinmo_devices[] = { |
45 | { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) }, |
46 | { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_THT_2P_ARCADE) }, |
47 | { } |
48 | }; |
49 | |
50 | MODULE_DEVICE_TABLE(hid, xinmo_devices); |
51 | |
52 | static struct hid_driver xinmo_driver = { |
53 | .name = "xinmo" , |
54 | .id_table = xinmo_devices, |
55 | .event = xinmo_event |
56 | }; |
57 | |
58 | module_hid_driver(xinmo_driver); |
59 | MODULE_LICENSE("GPL" ); |
60 | |