linux-imx

/*

 *  Force feedback support for Betop based devices

 *

 *  The devices are distributed under various names and the same USB device ID

 *  can be used in both adapters and actual game controllers.

 *

 *  0x11c2:0x2208 "BTP2185 BFM mode Joystick"

 *   - tested with BTP2185 BFM Mode.

 *

 *  0x11C0:0x5506 "BTP2185 PC mode Joystick"

 *   - tested with BTP2185 PC Mode.

 *

 *  0x8380:0x1850 "BTP2185 V2 PC mode USB Gamepad"

 *   - tested with BTP2185 PC Mode with another version.

 *

 *  0x20bc:0x5500 "BTP2185 V2 BFM mode Joystick"

 *   - tested with BTP2171s.

 *  Copyright (c) 2014 Huang Bo <huangbobupt@163.com>

 */

​

/*

 * 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/input.h>

#include <linux/slab.h>

#include <linux/module.h>

#include <linux/hid.h>

​

#include "hid-ids.h"

​

struct betopff_device {

    struct hid_report *report;

};

​

static int hid_betopff_play(struct input_dev *dev, void *data,

             struct ff_effect *effect)

{

    struct hid_device *hid = input_get_drvdata(dev);

    struct betopff_device *betopff = data;

    __u16 left, right;

​

    left = effect->u.rumble.strong_magnitude;

    right = effect->u.rumble.weak_magnitude;

​

    betopff->report->field[2]->value[0] = left / 256;

    betopff->report->field[3]->value[0] = right / 256;

​

    hid_hw_request(hid, betopff->report, HID_REQ_SET_REPORT);

​

    return 0;

}

​

static int betopff_init(struct hid_device *hid)

{

    struct betopff_device *betopff;

    struct hid_report *report;

    struct hid_input *hidinput =

            list_first_entry(&hid->inputs, struct hid_input, list);