/* * Force feedback support for ACRUX game controllers * * From what I have gathered, these devices are mass produced in China * by several vendors. They often share the same design as the original * Xbox 360 controller. * * 1a34:0802 "ACRUX USB GAMEPAD 8116" * - tested with a EXEQ EQ-PCU-02090 game controller. * * Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru> */ /* * 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/usb.h> #include <linux/hid.h> #include "hid-ids.h" #include "usbhid/usbhid.h" struct axff_device { struct hid_report *report; }; static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct axff_device *axff = 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 * 0xff / 0xffff; right = right * 0xff / 0xffff; axff->report->field[0]->value[0] = left; axff->report->field[1]->value[0] = right; axff->report->field[2]->value[0] = left; axff->report->field[3]->value[0] = right; dbg_hid("running with 0x%02x 0x%02x", left, right); usbhid_submit_report(hid, axff->report, USB_DIR_OUT); return 0; } static int axff_init(struct hid_device *hid) { struct axff_device *axff; struct hid_report *report; struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list); struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list; struct input_dev *dev = hidinput->input; int error; if (list_empty(report_list)) { dev_err(&hid->dev, "no output reports found\n"); return -ENODEV; } report = list_first_entry(report_list, struct hid_report, list); if (report->maxfield < 4) { dev_err(&hid->dev, "no fields in the report: %d\n", report->maxfield); return -ENODEV; } axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL); if (!axff) return -ENOMEM; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, axff, axff_play); if (error) goto err_free_mem; axff->report = report; axff->report->field[0]->value[0] = 0x00; axff->report->field[1]->value[0] = 0x00; axff->report->field[2]->value[0] = 0x00; axff->report->field[3]->value[0] = 0x00; usbhid_submit_report(hid, axff->report, USB_DIR_OUT); dev_info(&hid->dev, "Force Feedback for ACRUX game controllers by Sergei Kolzun<x0r@dv-life.ru>\n"); return 0; err_free_mem: kfree(axff); return error; } static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id) { int error; dev_dbg(&hdev->dev, "ACRUX HID hardware probe..."); error = hid_parse(hdev); if (error) { dev_err(&hdev->dev, "parse failed\n"); return error; } error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (error) { dev_err(&hdev->dev, "hw start failed\n"); return error; } error = axff_init(hdev); if (error) { /* * Do not fail device initialization completely as device * may still be partially operable, just warn. */ dev_warn(&hdev->dev, "Failed to enable force feedback support, error: %d\n", error); } return 0; } static const struct hid_device_id ax_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), }, { } }; MODULE_DEVICE_TABLE(hid, ax_devices); static struct hid_driver ax_driver = { .name = "acrux", .id_table = ax_devices, .probe = ax_probe, }; static int __init ax_init(void) { return hid_register_driver(&ax_driver); } static void __exit ax_exit(void) { hid_unregister_driver(&ax_driver); } module_init(ax_init); module_exit(ax_exit); MODULE_AUTHOR("Sergei Kolzun"); MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers"); MODULE_LICENSE("GPL");