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 */
xinmo_event(struct hid_device * hdev,struct hid_field * field,struct hid_usage * usage,__s32 value)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(field->hidinput->input, usage->type,
35 usage->code, -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
