hid-sjoy.c

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/*
 *  Force feedback support for SmartJoy PLUS PS2->USB adapter
 *
 *  Copyright (c) 2009 Jussi Kivilinna <[email protected]>
 *
 *  Based of hid-pl.c and hid-gaff.c
 *   Copyright (c) 2007, 2009 Anssi Hannula <[email protected]>
 *   Copyright (c) 2008 Lukasz Lubojanski <[email protected]>
 */

/*
 * 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
 */

/* #define DEBUG */

#include <linux/input.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"

#ifdef CONFIG_SMARTJOYPLUS_FF
#include "usbhid/usbhid.h"

struct sjoyff_device {
    struct hid_report *report;
};

static int hid_sjoyff_play(struct input_dev *dev, void *data,
             struct ff_effect *effect)
{
    struct hid_device *hid = input_get_drvdata(dev);
    struct sjoyff_device *sjoyff = data;
    u32 left, right;

    left = effect->u.rumble.strong_magnitude;
    right = effect->u.rumble.weak_magnitude;
    dev_dbg(&dev->dev, "called with 0x%08x 0x%08x\n", left, right);

    left = left * 0xff / 0xffff;
    right = (right != 0); /* on/off only */

    sjoyff->report->field[0]->value[1] = right;
    sjoyff->report->field[0]->value[2] = left;
    dev_dbg(&dev->dev, "running with 0x%02x 0x%02x\n", left, right);
    usbhid_submit_report(hid, sjoyff->report, USB_DIR_OUT);

    return 0;
}

static int sjoyff_init(struct hid_device *hid)
{
    struct sjoyff_device *sjoyff;
    struct hid_report *report;
    struct hid_input *hidinput;
    struct list_head *report_list =
            &hid->report_enum[HID_OUTPUT_REPORT].report_list;
    struct list_head *report_ptr = report_list;
    struct input_dev *dev;
    int error;

    if (list_empty(report_list)) {
        hid_err(hid, "no output reports found\n");
        return -ENODEV;
    }

    list_for_each_entry(hidinput, &hid->inputs, list) {
        report_ptr = report_ptr->next;

        if (report_ptr == report_list) {
            hid_err(hid, "required output report is missing\n");
            return -ENODEV;
        }

        report = list_entry(report_ptr, struct hid_report, list);
        if (report->maxfield < 1) {
            hid_err(hid, "no fields in the report\n");
            return -ENODEV;
        }

        if (report->field[0]->report_count < 3) {
            hid_err(hid, "not enough values in the field\n");
            return -ENODEV;
        }

        sjoyff = kzalloc(sizeof(struct sjoyff_device), GFP_KERNEL);
        if (!sjoyff)
            return -ENOMEM;

        dev = hidinput->input;

        set_bit(FF_RUMBLE, dev->ffbit);

        error = input_ff_create_memless(dev, sjoyff, hid_sjoyff_play);
        if (error) {
            kfree(sjoyff);
            return error;
        }

        sjoyff->report = report;
        sjoyff->report->field[0]->value[0] = 0x01;
        sjoyff->report->field[0]->value[1] = 0x00;
        sjoyff->report->field[0]->value[2] = 0x00;
        usbhid_submit_report(hid, sjoyff->report, USB_DIR_OUT);
    }

    hid_info(hid, "Force feedback for SmartJoy PLUS PS2/USB adapter\n");

    return 0;
}
#else
static inline int sjoyff_init(struct hid_device *hid)
{
    return 0;
}
#endif

static int sjoy_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
    int ret;

    hdev->quirks |= id->driver_data;

    ret = hid_parse(hdev);
    if (ret) {
        hid_err(hdev, "parse failed\n");
        goto err;
    }

    ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
    if (ret) {
        hid_err(hdev, "hw start failed\n");
        goto err;
    }

    sjoyff_init(hdev);

    return 0;
err:
    return ret;
}

static const struct hid_device_id sjoy_devices[] = {
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO),
        .driver_data = HID_QUIRK_NOGET },
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO),
        .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
                   HID_QUIRK_SKIP_OUTPUT_REPORTS },
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO),
        .driver_data = HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET |
                   HID_QUIRK_SKIP_OUTPUT_REPORTS },
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
    { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD),
        .driver_data = HID_QUIRK_MULTI_INPUT |
                   HID_QUIRK_SKIP_OUTPUT_REPORTS },
    { }
};
MODULE_DEVICE_TABLE(hid, sjoy_devices);

static struct hid_driver sjoy_driver = {
    .name = "smartjoyplus",
    .id_table = sjoy_devices,
    .probe = sjoy_probe,
};

static int __init sjoy_init(void)
{
    return hid_register_driver(&sjoy_driver);
}

static void __exit sjoy_exit(void)
{
    hid_unregister_driver(&sjoy_driver);
}

module_init(sjoy_init);
module_exit(sjoy_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jussi Kivilinna");