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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>
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Force feedback support for Logitech RumblePad and Rumblepad 2
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*
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* Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>
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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 "hid-lg.h"
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struct lg2ff_device {
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struct hid_report *report;
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};
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static int play_effect(struct input_dev *dev, void *data,
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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 lg2ff_device *lg2ff = data;
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int weak, strong;
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strong = effect->u.rumble.strong_magnitude;
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weak = effect->u.rumble.weak_magnitude;
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if (weak || strong) {
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weak = weak * 0xff / 0xffff;
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strong = strong * 0xff / 0xffff;
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lg2ff->report->field[0]->value[0] = 0x51;
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lg2ff->report->field[0]->value[2] = weak;
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lg2ff->report->field[0]->value[4] = strong;
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} else {
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lg2ff->report->field[0]->value[0] = 0xf3;
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lg2ff->report->field[0]->value[2] = 0x00;
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lg2ff->report->field[0]->value[4] = 0x00;
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}
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hid_hw_request(hid, lg2ff->report, HID_REQ_SET_REPORT);
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return 0;
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}
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int lg2ff_init(struct hid_device *hid)
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{
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struct lg2ff_device *lg2ff;
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struct hid_report *report;
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struct hid_input *hidinput = list_entry(hid->inputs.next,
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struct hid_input, list);
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struct input_dev *dev = hidinput->input;
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int error;
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/* Check that the report looks ok */
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report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7);
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if (!report)
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return -ENODEV;
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lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
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if (!lg2ff)
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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, lg2ff, play_effect);
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if (error) {
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kfree(lg2ff);
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return error;
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}
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lg2ff->report = report;
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report->field[0]->value[0] = 0xf3;
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report->field[0]->value[1] = 0x00;
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report->field[0]->value[2] = 0x00;
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report->field[0]->value[3] = 0x00;
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report->field[0]->value[4] = 0x00;
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report->field[0]->value[5] = 0x00;
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report->field[0]->value[6] = 0x00;
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hid_hw_request(hid, report, HID_REQ_SET_REPORT);
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hid_info(hid, "Force feedback for Logitech variant 2 rumble devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
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return 0;
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}
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