2
* Force feedback support for Logitech RumblePad and Rumblepad 2
4
* Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>
8
* This program is free software; you can redistribute it and/or modify
9
* it under the terms of the GNU General Public License as published by
10
* the Free Software Foundation; either version 2 of the License, or
11
* (at your option) any later version.
13
* This program is distributed in the hope that it will be useful,
14
* but WITHOUT ANY WARRANTY; without even the implied warranty of
15
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
* GNU General Public License for more details.
18
* You should have received a copy of the GNU General Public License
19
* along with this program; if not, write to the Free Software
20
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24
#include <linux/input.h>
25
#include <linux/slab.h>
26
#include <linux/usb.h>
27
#include <linux/hid.h>
29
#include "usbhid/usbhid.h"
33
struct hid_report *report;
36
static int play_effect(struct input_dev *dev, void *data,
37
struct ff_effect *effect)
39
struct hid_device *hid = input_get_drvdata(dev);
40
struct lg2ff_device *lg2ff = data;
43
strong = effect->u.rumble.strong_magnitude;
44
weak = effect->u.rumble.weak_magnitude;
47
weak = weak * 0xff / 0xffff;
48
strong = strong * 0xff / 0xffff;
50
lg2ff->report->field[0]->value[0] = 0x51;
51
lg2ff->report->field[0]->value[2] = weak;
52
lg2ff->report->field[0]->value[4] = strong;
54
lg2ff->report->field[0]->value[0] = 0xf3;
55
lg2ff->report->field[0]->value[2] = 0x00;
56
lg2ff->report->field[0]->value[4] = 0x00;
59
usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT);
63
int lg2ff_init(struct hid_device *hid)
65
struct lg2ff_device *lg2ff;
66
struct hid_report *report;
67
struct hid_input *hidinput = list_entry(hid->inputs.next,
68
struct hid_input, list);
69
struct list_head *report_list =
70
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
71
struct input_dev *dev = hidinput->input;
74
if (list_empty(report_list)) {
75
hid_err(hid, "no output report found\n");
79
report = list_entry(report_list->next, struct hid_report, list);
81
if (report->maxfield < 1) {
82
hid_err(hid, "output report is empty\n");
85
if (report->field[0]->report_count < 7) {
86
hid_err(hid, "not enough values in the field\n");
90
lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
94
set_bit(FF_RUMBLE, dev->ffbit);
96
error = input_ff_create_memless(dev, lg2ff, play_effect);
102
lg2ff->report = report;
103
report->field[0]->value[0] = 0xf3;
104
report->field[0]->value[1] = 0x00;
105
report->field[0]->value[2] = 0x00;
106
report->field[0]->value[3] = 0x00;
107
report->field[0]->value[4] = 0x00;
108
report->field[0]->value[5] = 0x00;
109
report->field[0]->value[6] = 0x00;
111
usbhid_submit_report(hid, report, USB_DIR_OUT);
113
hid_info(hid, "Force feedback for Logitech RumblePad/Rumblepad 2 by Anssi Hannula <anssi.hannula@gmail.com>\n");