![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
187 lines
4.1 KiB
C
187 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Force feedback support for ACRUX game controllers
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*
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* From what I have gathered, these devices are mass produced in China
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* by several vendors. They often share the same design as the original
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* Xbox 360 controller.
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*
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* 1a34:0802 "ACRUX USB GAMEPAD 8116"
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* - tested with an EXEQ EQ-PCU-02090 game controller.
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*
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* Copyright (c) 2010 Sergei Kolzun <x0r@dv-life.ru>
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*/
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/*
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*/
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#include <linux/input.h>
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#include <linux/slab.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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#ifdef CONFIG_HID_ACRUX_FF
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struct axff_device {
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struct hid_report *report;
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};
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static int axff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct axff_device *axff = data;
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struct hid_report *report = axff->report;
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int field_count = 0;
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int left, right;
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int i, j;
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left = effect->u.rumble.strong_magnitude;
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right = effect->u.rumble.weak_magnitude;
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dbg_hid("called with 0x%04x 0x%04x", left, right);
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left = left * 0xff / 0xffff;
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right = right * 0xff / 0xffff;
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for (i = 0; i < report->maxfield; i++) {
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for (j = 0; j < report->field[i]->report_count; j++) {
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report->field[i]->value[j] =
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field_count % 2 ? right : left;
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field_count++;
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}
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}
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dbg_hid("running with 0x%02x 0x%02x", left, right);
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hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
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return 0;
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}
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static int axff_init(struct hid_device *hid)
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{
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struct axff_device *axff;
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struct hid_report *report;
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struct hid_input *hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
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struct list_head *report_list =&hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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int field_count = 0;
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int i, j;
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int error;
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if (list_empty(report_list)) {
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hid_err(hid, "no output reports found\n");
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return -ENODEV;
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}
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report = list_first_entry(report_list, struct hid_report, list);
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for (i = 0; i < report->maxfield; i++) {
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for (j = 0; j < report->field[i]->report_count; j++) {
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report->field[i]->value[j] = 0x00;
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field_count++;
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}
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}
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if (field_count < 4 && hid->product != 0xf705) {
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hid_err(hid, "not enough fields in the report: %d\n",
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field_count);
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return -ENODEV;
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}
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axff = kzalloc(sizeof(struct axff_device), GFP_KERNEL);
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if (!axff)
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return -ENOMEM;
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set_bit(FF_RUMBLE, dev->ffbit);
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error = input_ff_create_memless(dev, axff, axff_play);
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if (error)
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goto err_free_mem;
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axff->report = report;
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hid_hw_request(hid, axff->report, HID_REQ_SET_REPORT);
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hid_info(hid, "Force Feedback for ACRUX game controllers by Sergei Kolzun <x0r@dv-life.ru>\n");
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return 0;
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err_free_mem:
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kfree(axff);
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return error;
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}
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#else
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static inline int axff_init(struct hid_device *hid)
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{
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return 0;
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}
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#endif
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static int ax_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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int error;
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dev_dbg(&hdev->dev, "ACRUX HID hardware probe...\n");
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error = hid_parse(hdev);
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if (error) {
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hid_err(hdev, "parse failed\n");
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return error;
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}
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error = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
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if (error) {
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hid_err(hdev, "hw start failed\n");
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return error;
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}
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error = axff_init(hdev);
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if (error) {
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/*
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* Do not fail device initialization completely as device
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* may still be partially operable, just warn.
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*/
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hid_warn(hdev,
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"Failed to enable force feedback support, error: %d\n",
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error);
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}
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/*
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* We need to start polling device right away, otherwise
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* it will go into a coma.
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*/
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error = hid_hw_open(hdev);
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if (error) {
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dev_err(&hdev->dev, "hw open failed\n");
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hid_hw_stop(hdev);
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return error;
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}
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return 0;
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}
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static void ax_remove(struct hid_device *hdev)
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{
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hid_hw_close(hdev);
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hid_hw_stop(hdev);
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}
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static const struct hid_device_id ax_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802), },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705), },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, ax_devices);
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static struct hid_driver ax_driver = {
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.name = "acrux",
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.id_table = ax_devices,
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.probe = ax_probe,
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.remove = ax_remove,
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};
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module_hid_driver(ax_driver);
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MODULE_AUTHOR("Sergei Kolzun");
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MODULE_DESCRIPTION("Force feedback support for ACRUX game controllers");
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MODULE_LICENSE("GPL");
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