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/*
* Force feedback support for Mayflash game controller adapters.
*
* These devices are manufactured by Mayflash but identify themselves
* using the vendor ID of DragonRise Inc.
*
* Tested with:
* 0079:1801 "DragonRise Inc. Mayflash PS3 Game Controller Adapter"
*
* The following adapters probably work too, but need to be tested:
* 0079:1800 "DragonRise Inc. Mayflash WIIU Game Controller Adapter"
* 0079:1843 "DragonRise Inc. Mayflash GameCube Game Controller Adapter"
*
* Copyright (c) 2016 Marcel Hasler <mahasler@gmail.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.
*
* 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.
*/
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/hid.h>
#include <linux/module.h>
#include "hid-ids.h"
struct mf_device {
struct hid_report *report;
};
static int mf_play(struct input_dev *dev, void *data, struct ff_effect *effect)
{
struct hid_device *hid = input_get_drvdata(dev);
struct mf_device *mf = data;
int strong, weak;
strong = effect->u.rumble.strong_magnitude;
weak = effect->u.rumble.weak_magnitude;
dbg_hid("Called with 0x%04x 0x%04x.\n", strong, weak);
strong = strong * 0xff / 0xffff;
weak = weak * 0xff / 0xffff;
dbg_hid("Running with 0x%02x 0x%02x.\n", strong, weak);
mf->report->field[0]->value[0] = weak;
mf->report->field[0]->value[1] = strong;
hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
return 0;
}
static int mf_init(struct hid_device *hid)
{
struct mf_device *mf;
struct list_head *report_list =
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
struct list_head *report_ptr;
struct hid_report *report;
struct list_head *input_ptr = &hid->inputs;
struct hid_input *input;
struct input_dev *dev;
int error;
/* Setup each of the four inputs */
list_for_each(report_ptr, report_list) {
report = list_entry(report_ptr, struct hid_report, list);
if (report->maxfield < 1 || report->field[0]->report_count < 2) {
hid_err(hid, "Invalid report, this should never happen!\n");
return -ENODEV;
}
if (list_is_last(input_ptr, &hid->inputs)) {
hid_err(hid, "Missing input, this should never happen!\n");
return -ENODEV;
}
input_ptr = input_ptr->next;
input = list_entry(input_ptr, struct hid_input, list);
mf = kzalloc(sizeof(struct mf_device), GFP_KERNEL);
if (!mf)
return -ENOMEM;
dev = input->input;
set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, mf, mf_play);
if (error) {
kfree(mf);
return error;
}
mf->report = report;
mf->report->field[0]->value[0] = 0x00;
mf->report->field[0]->value[1] = 0x00;
hid_hw_request(hid, mf->report, HID_REQ_SET_REPORT);
}
hid_info(hid, "Force feedback for HJZ Mayflash game controller "
"adapters by Marcel Hasler <mahasler@gmail.com>\n");
return 0;
}
static int mf_probe(struct hid_device *hid, const struct hid_device_id *id)
{
int error;
dev_dbg(&hid->dev, "Mayflash HID hardware probe...\n");
/* Split device into four inputs */
hid->quirks |= HID_QUIRK_MULTI_INPUT;
error = hid_parse(hid);
if (error) {
hid_err(hid, "HID parse failed.\n");
return error;
}
error = hid_hw_start(hid, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
if (error) {
hid_err(hid, "HID hw start failed\n");
return error;
}
error = mf_init(hid);
if (error) {
hid_err(hid, "Force feedback init failed.\n");
hid_hw_stop(hid);
return error;
}
return 0;
}
static const struct hid_device_id mf_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, USB_DEVICE_ID_DRAGONRISE_PS3), },
{ }
};
MODULE_DEVICE_TABLE(hid, mf_devices);
static struct hid_driver mf_driver = {
.name = "hid_mf",
.id_table = mf_devices,
.probe = mf_probe,
};
module_hid_driver(mf_driver);
MODULE_LICENSE("GPL");
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