blob: 9eb83cf9d22b98021d540b61f08be3a690f45466 [file] [log] [blame]
* Force feedback support for PantherLord/GreenAsia 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.
* 0810:0001 "Twin USB Joystick"
* - tested with PantherLord USB/PS2 2in1 Adapter
* - contains two reports, one for each port (HID_QUIRK_MULTI_INPUT)
* 0e8f:0003 "GreenAsia Inc. USB Joystick "
* - tested with Köng Gaming gamepad
* Copyright (c) 2007 Anssi Hannula <>
* 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
* 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 */
#define debug(format, arg...) pr_debug("hid-plff: " format "\n" , ## arg)
#include <linux/input.h>
#include <linux/usb.h>
#include <linux/hid.h>
#include "usbhid.h"
struct plff_device {
struct hid_report *report;
static int hid_plff_play(struct input_dev *dev, void *data,
struct ff_effect *effect)
struct hid_device *hid = input_get_drvdata(dev);
struct plff_device *plff = data;
int left, right;
left = effect->u.rumble.strong_magnitude;
right = effect->u.rumble.weak_magnitude;
debug("called with 0x%04x 0x%04x", left, right);
left = left * 0x7f / 0xffff;
right = right * 0x7f / 0xffff;
plff->report->field[0]->value[2] = left;
plff->report->field[0]->value[3] = right;
debug("running with 0x%02x 0x%02x", left, right);
usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
return 0;
int hid_plff_init(struct hid_device *hid)
struct plff_device *plff;
struct hid_report *report;
struct hid_input *hidinput;
struct list_head *report_list =
struct list_head *report_ptr = report_list;
struct input_dev *dev;
int error;
/* The device contains one output report per physical device, all
containing 1 field, which contains 4 ff00.0002 usages and 4 16bit
absolute values.
The input reports also contain a field which contains
8 ff00.0001 usages and 8 boolean values. Their meaning is
currently unknown. */
if (list_empty(report_list)) {
printk(KERN_ERR "hid-plff: 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) {
printk(KERN_ERR "hid-plff: required output report is missing\n");
return -ENODEV;
report = list_entry(report_ptr, struct hid_report, list);
if (report->maxfield < 1) {
printk(KERN_ERR "hid-plff: no fields in the report\n");
return -ENODEV;
if (report->field[0]->report_count < 4) {
printk(KERN_ERR "hid-plff: not enough values in the field\n");
return -ENODEV;
plff = kzalloc(sizeof(struct plff_device), GFP_KERNEL);
if (!plff)
return -ENOMEM;
dev = hidinput->input;
set_bit(FF_RUMBLE, dev->ffbit);
error = input_ff_create_memless(dev, plff, hid_plff_play);
if (error) {
return error;
plff->report = report;
plff->report->field[0]->value[0] = 0x00;
plff->report->field[0]->value[1] = 0x00;
plff->report->field[0]->value[2] = 0x00;
plff->report->field[0]->value[3] = 0x00;
usbhid_submit_report(hid, plff->report, USB_DIR_OUT);
printk(KERN_INFO "hid-plff: Force feedback for PantherLord/GreenAsia "
"devices by Anssi Hannula <>\n");
return 0;