linux-imx

/*

 *  Force feedback support for GreenAsia (Product ID 0x12) based devices

 *

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

 *  can be used in many game controllers.

 *

 *

 *  0e8f:0012 "GreenAsia Inc.    USB Joystick     "

 *   - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635.

 *

 *  Copyright (c) 2008 Lukasz Lubojanski <lukasz@lubojanski.info>

 */

​

/*

 * 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.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

 */

​

#include <linux/input.h>

#include <linux/slab.h>

#include <linux/hid.h>

#include <linux/module.h>

#include "hid-ids.h"

​

#ifdef CONFIG_GREENASIA_FF

​

struct gaff_device {

    struct hid_report *report;

};

​

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

             struct ff_effect *effect)

{

    struct hid_device *hid = input_get_drvdata(dev);

    struct gaff_device *gaff = data;

    int left, right;

​

    left = effect->u.rumble.strong_magnitude;

    right = effect->u.rumble.weak_magnitude;

​

    dbg_hid("called with 0x%04x 0x%04x", left, right);

​

    left = left * 0xfe / 0xffff;

    right = right * 0xfe / 0xffff;

​

    gaff->report->field[0]->value[0] = 0x51;

    gaff->report->field[0]->value[1] = 0x0;

    gaff->report->field[0]->value[2] = right;

    gaff->report->field[0]->value[3] = 0;

    gaff->report->field[0]->value[4] = left;

    gaff->report->field[0]->value[5] = 0;

    dbg_hid("running with 0x%02x 0x%02x", left, right);