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1// SPDX-License-Identifier: GPL-2.0-or-later2/*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 the5 * logical axis minimum of the HID report descriptor (the report announces6 * -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 Scherler10 */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_event56};57 58module_hid_driver(xinmo_driver);59MODULE_DESCRIPTION("HID driver for Xin-Mo devices");60MODULE_LICENSE("GPL");61