2 * Force feedback support for Logitech 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/usb.h>
26 #include <linux/hid.h>
30 struct hid_report *report;
33 static int play_effect(struct input_dev *dev, void *data,
34 struct ff_effect *effect)
36 struct hid_device *hid = input_get_drvdata(dev);
37 struct lg2ff_device *lg2ff = data;
40 strong = effect->u.rumble.strong_magnitude;
41 weak = effect->u.rumble.weak_magnitude;
44 weak = weak * 0xff / 0xffff;
45 strong = strong * 0xff / 0xffff;
47 lg2ff->report->field[0]->value[0] = 0x51;
48 lg2ff->report->field[0]->value[2] = weak;
49 lg2ff->report->field[0]->value[4] = strong;
51 lg2ff->report->field[0]->value[0] = 0xf3;
52 lg2ff->report->field[0]->value[2] = 0x00;
53 lg2ff->report->field[0]->value[4] = 0x00;
56 usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT);
60 int hid_lg2ff_init(struct hid_device *hid)
62 struct lg2ff_device *lg2ff;
63 struct hid_report *report;
64 struct hid_input *hidinput = list_entry(hid->inputs.next,
65 struct hid_input, list);
66 struct list_head *report_list =
67 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
68 struct input_dev *dev = hidinput->input;
71 if (list_empty(report_list)) {
72 printk(KERN_ERR "hid-lg2ff: no output report found\n");
76 report = list_entry(report_list->next, struct hid_report, list);
78 if (report->maxfield < 1) {
79 printk(KERN_ERR "hid-lg2ff: output report is empty\n");
82 if (report->field[0]->report_count < 7) {
83 printk(KERN_ERR "hid-lg2ff: not enough values in the field\n");
87 lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
91 set_bit(FF_RUMBLE, dev->ffbit);
93 error = input_ff_create_memless(dev, lg2ff, play_effect);
99 lg2ff->report = report;
100 report->field[0]->value[0] = 0xf3;
101 report->field[0]->value[1] = 0x00;
102 report->field[0]->value[2] = 0x00;
103 report->field[0]->value[3] = 0x00;
104 report->field[0]->value[4] = 0x00;
105 report->field[0]->value[5] = 0x00;
106 report->field[0]->value[6] = 0x00;
108 usbhid_submit_report(hid, report, USB_DIR_OUT);
110 printk(KERN_INFO "Force feedback for Logitech Rumblepad 2 by "
111 "Anssi Hannula <anssi.hannula@gmail.com>\n");