blob: b3cd1507dda2eab0eb09c0c48e006505eabac153 [file] [log] [blame]
Anssi Hannulac17f9c92008-04-01 01:51:11 +02001/*
Hendrik Iben2c6118e2010-10-04 15:39:49 +02002 * Force feedback support for Logitech RumblePad and Rumblepad 2
Anssi Hannulac17f9c92008-04-01 01:51:11 +02003 *
4 * Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com>
5 */
6
7/*
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.
12 *
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.
17 *
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
21 */
22
23
24#include <linux/input.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090025#include <linux/slab.h>
Anssi Hannulac17f9c92008-04-01 01:51:11 +020026#include <linux/hid.h>
Jiri Slaby606bd0a2008-07-04 23:06:45 +020027
Jiri Slaby606bd0a2008-07-04 23:06:45 +020028#include "hid-lg.h"
Anssi Hannulac17f9c92008-04-01 01:51:11 +020029
30struct lg2ff_device {
31 struct hid_report *report;
32};
33
34static int play_effect(struct input_dev *dev, void *data,
35 struct ff_effect *effect)
36{
37 struct hid_device *hid = input_get_drvdata(dev);
38 struct lg2ff_device *lg2ff = data;
39 int weak, strong;
40
41 strong = effect->u.rumble.strong_magnitude;
42 weak = effect->u.rumble.weak_magnitude;
43
44 if (weak || strong) {
45 weak = weak * 0xff / 0xffff;
46 strong = strong * 0xff / 0xffff;
47
48 lg2ff->report->field[0]->value[0] = 0x51;
49 lg2ff->report->field[0]->value[2] = weak;
50 lg2ff->report->field[0]->value[4] = strong;
51 } else {
52 lg2ff->report->field[0]->value[0] = 0xf3;
53 lg2ff->report->field[0]->value[2] = 0x00;
54 lg2ff->report->field[0]->value[4] = 0x00;
55 }
56
Benjamin Tissoiresd88142722013-02-25 11:31:46 +010057 hid_hw_request(hid, lg2ff->report, HID_REQ_SET_REPORT);
Anssi Hannulac17f9c92008-04-01 01:51:11 +020058 return 0;
59}
60
Jiri Slaby606bd0a2008-07-04 23:06:45 +020061int lg2ff_init(struct hid_device *hid)
Anssi Hannulac17f9c92008-04-01 01:51:11 +020062{
63 struct lg2ff_device *lg2ff;
64 struct hid_report *report;
65 struct hid_input *hidinput = list_entry(hid->inputs.next,
66 struct hid_input, list);
67 struct list_head *report_list =
68 &hid->report_enum[HID_OUTPUT_REPORT].report_list;
69 struct input_dev *dev = hidinput->input;
70 int error;
71
72 if (list_empty(report_list)) {
Joe Perches4291ee32010-12-09 19:29:03 -080073 hid_err(hid, "no output report found\n");
Anssi Hannulac17f9c92008-04-01 01:51:11 +020074 return -ENODEV;
75 }
76
77 report = list_entry(report_list->next, struct hid_report, list);
78
79 if (report->maxfield < 1) {
Joe Perches4291ee32010-12-09 19:29:03 -080080 hid_err(hid, "output report is empty\n");
Anssi Hannulac17f9c92008-04-01 01:51:11 +020081 return -ENODEV;
82 }
83 if (report->field[0]->report_count < 7) {
Joe Perches4291ee32010-12-09 19:29:03 -080084 hid_err(hid, "not enough values in the field\n");
Anssi Hannulac17f9c92008-04-01 01:51:11 +020085 return -ENODEV;
86 }
87
88 lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
89 if (!lg2ff)
90 return -ENOMEM;
91
92 set_bit(FF_RUMBLE, dev->ffbit);
93
94 error = input_ff_create_memless(dev, lg2ff, play_effect);
95 if (error) {
96 kfree(lg2ff);
97 return error;
98 }
99
100 lg2ff->report = report;
101 report->field[0]->value[0] = 0xf3;
102 report->field[0]->value[1] = 0x00;
103 report->field[0]->value[2] = 0x00;
104 report->field[0]->value[3] = 0x00;
105 report->field[0]->value[4] = 0x00;
106 report->field[0]->value[5] = 0x00;
107 report->field[0]->value[6] = 0x00;
108
Benjamin Tissoiresd88142722013-02-25 11:31:46 +0100109 hid_hw_request(hid, report, HID_REQ_SET_REPORT);
Anssi Hannulac17f9c92008-04-01 01:51:11 +0200110
Joe Perches4291ee32010-12-09 19:29:03 -0800111 hid_info(hid, "Force feedback for Logitech RumblePad/Rumblepad 2 by Anssi Hannula <anssi.hannula@gmail.com>\n");
Anssi Hannulac17f9c92008-04-01 01:51:11 +0200112
113 return 0;
114}