xref: /kernel/linux/linux-6.6/drivers/hid/hid-xinmo.c (revision 62306a36) 
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 */
25static 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(field->hidinput->input, usage->type,
35				usage->code, -1);
36			return 1;
37		}
38		break;
39	}
40
41	return 0;
42}
43
44static 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
50MODULE_DEVICE_TABLE(hid, xinmo_devices);
51
52static struct hid_driver xinmo_driver = {
53	.name = "xinmo",
54	.id_table = xinmo_devices,
55	.event = xinmo_event
56};
57
58module_hid_driver(xinmo_driver);
59MODULE_LICENSE("GPL");
60