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/*
* HID driver for Xin-Mo devices, currently only the Dual Arcade controller.
* Fixes the negative axis event values (the devices sends -2) to match the
* logical axis minimum of the HID report descriptor (the report announces
* -1). It is needed because hid-input discards out of bounds values.
* (This module is based on "hid-saitek" and "hid-lg".)
*
* Copyright (c) 2013 Olivier Scherler
*/
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*/
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include "hid-ids.h"
/*
* Fix negative events that are out of bounds.
*/
static int xinmo_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
switch (usage->code) {
case ABS_X:
case ABS_Y:
case ABS_Z:
case ABS_RX:
if (value < -1) {
input_event(field->hidinput->input, usage->type,
usage->code, -1);
return 1;
}
break;
}
return 0;
}
static const struct hid_device_id xinmo_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
{ }
};
MODULE_DEVICE_TABLE(hid, xinmo_devices);
static struct hid_driver xinmo_driver = {
.name = "xinmo",
.id_table = xinmo_devices,
.event = xinmo_event
};
static int __init xinmo_init(void)
{
return hid_register_driver(&xinmo_driver);
}
static void __exit xinmo_exit(void)
{
hid_unregister_driver(&xinmo_driver);
}
module_init(xinmo_init);
module_exit(xinmo_exit);
MODULE_LICENSE("GPL");
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