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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Force feedback support for hid-compliant for some of the devices from
3 * Logitech, namely:
4 * - WingMan Cordless RumblePad
5 * - WingMan Force 3D
6 *
7 * Copyright (c) 2002-2004 Johann Deneux
Anssi Hannuladc76c912006-07-19 01:40:55 -04008 * Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 */
10
11/*
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 * Should you need to contact me, the author, you can do so by
27 * e-mail - mail your message to <johann.deneux@it.uu.se>
28 */
29
30#include <linux/input.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#include <linux/usb.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010032#include <linux/hid.h>
Jiri Slaby606bd0a2008-07-04 23:06:45 +020033
34#include "usbhid/usbhid.h"
35#include "hid-lg.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
Kay Sieversf9f852d2006-10-07 21:54:55 +020037struct dev_type {
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 u16 idVendor;
39 u16 idProduct;
Anssi Hannuladc76c912006-07-19 01:40:55 -040040 const signed short *ff;
Linus Torvalds1da177e2005-04-16 15:20:36 -070041};
42
Anssi Hannuladc76c912006-07-19 01:40:55 -040043static const signed short ff_rumble[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070044 FF_RUMBLE,
45 -1
46};
47
Anssi Hannuladc76c912006-07-19 01:40:55 -040048static const signed short ff_joystick[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 FF_CONSTANT,
50 -1
51};
52
Sergey Belyashovf0bca452009-05-15 16:05:57 +020053static const signed short ff_joystick_ac[] = {
54 FF_CONSTANT,
55 FF_AUTOCENTER,
56 -1
57};
58
Sergey Belyashov2bea94d2008-09-02 17:31:16 +020059static const signed short ff_wheel[] = {
60 FF_CONSTANT,
61 FF_AUTOCENTER,
62 -1
63};
64
Kay Sieversf9f852d2006-10-07 21:54:55 +020065static const struct dev_type devices[] = {
Anssi Hannuladc76c912006-07-19 01:40:55 -040066 { 0x046d, 0xc211, ff_rumble },
67 { 0x046d, 0xc219, ff_rumble },
68 { 0x046d, 0xc283, ff_joystick },
Sergey Belyashovf0bca452009-05-15 16:05:57 +020069 { 0x046d, 0xc286, ff_joystick_ac },
Jiri Kosinafd30ea82009-06-23 12:11:31 +020070 { 0x046d, 0xc293, ff_joystick },
Sergey Belyashov92e0d892009-05-04 13:01:02 +040071 { 0x046d, 0xc294, ff_wheel },
Valentin Zagura130b1ab2007-02-18 01:41:27 -050072 { 0x046d, 0xc295, ff_joystick },
Sergey Belyashov2bea94d2008-09-02 17:31:16 +020073 { 0x046d, 0xca03, ff_wheel },
Linus Torvalds1da177e2005-04-16 15:20:36 -070074};
75
Anssi Hannuladc76c912006-07-19 01:40:55 -040076static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
77{
Dmitry Torokhove0712982007-05-09 10:17:31 +020078 struct hid_device *hid = input_get_drvdata(dev);
Anssi Hannuladc76c912006-07-19 01:40:55 -040079 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
80 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
81 int x, y;
82 unsigned int left, right;
83
84#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
85
86 switch (effect->type) {
87 case FF_CONSTANT:
88 x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
89 y = effect->u.ramp.end_level + 0x7f;
90 CLAMP(x);
91 CLAMP(y);
92 report->field[0]->value[0] = 0x51;
93 report->field[0]->value[1] = 0x08;
94 report->field[0]->value[2] = x;
95 report->field[0]->value[3] = y;
Jiri Kosina58037eb2007-05-30 15:07:13 +020096 dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
Jiri Kosina4916b3a2006-12-08 18:41:03 +010097 usbhid_submit_report(hid, report, USB_DIR_OUT);
Anssi Hannuladc76c912006-07-19 01:40:55 -040098 break;
99
100 case FF_RUMBLE:
101 right = effect->u.rumble.strong_magnitude;
102 left = effect->u.rumble.weak_magnitude;
103 right = right * 0xff / 0xffff;
104 left = left * 0xff / 0xffff;
105 CLAMP(left);
106 CLAMP(right);
107 report->field[0]->value[0] = 0x42;
108 report->field[0]->value[1] = 0x00;
109 report->field[0]->value[2] = left;
110 report->field[0]->value[3] = right;
Jiri Kosina58037eb2007-05-30 15:07:13 +0200111 dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
Jiri Kosina4916b3a2006-12-08 18:41:03 +0100112 usbhid_submit_report(hid, report, USB_DIR_OUT);
Anssi Hannuladc76c912006-07-19 01:40:55 -0400113 break;
114 }
115 return 0;
116}
117
Sergey Belyashov2bea94d2008-09-02 17:31:16 +0200118static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
119{
120 struct hid_device *hid = input_get_drvdata(dev);
121 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
122 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
123 __s32 *value = report->field[0]->value;
124 magnitude = (magnitude >> 12) & 0xf;
125 *value++ = 0xfe;
126 *value++ = 0x0d;
127 *value++ = magnitude; /* clockwise strength */
128 *value++ = magnitude; /* counter-clockwise strength */
129 *value++ = 0x80;
130 *value++ = 0x00;
131 *value = 0x00;
132 usbhid_submit_report(hid, report, USB_DIR_OUT);
133}
134
Jiri Slaby606bd0a2008-07-04 23:06:45 +0200135int lgff_init(struct hid_device* hid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136{
Anssi Hannuladc76c912006-07-19 01:40:55 -0400137 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
138 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
139 struct input_dev *dev = hidinput->input;
140 struct hid_report *report;
141 struct hid_field *field;
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500142 const signed short *ff_bits = ff_joystick;
Anssi Hannuladc76c912006-07-19 01:40:55 -0400143 int error;
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500144 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
146 /* Find the report to use */
Anssi Hannuladc76c912006-07-19 01:40:55 -0400147 if (list_empty(report_list)) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200148 err_hid("No output report found");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 return -1;
150 }
Anssi Hannuladc76c912006-07-19 01:40:55 -0400151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 /* Check that the report looks ok */
Anssi Hannuladc76c912006-07-19 01:40:55 -0400153 report = list_entry(report_list->next, struct hid_report, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 field = report->field[0];
155 if (!field) {
Jiri Kosina58037eb2007-05-30 15:07:13 +0200156 err_hid("NULL field");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 return -1;
158 }
159
Anssi Hannuladc76c912006-07-19 01:40:55 -0400160 for (i = 0; i < ARRAY_SIZE(devices); i++) {
161 if (dev->id.vendor == devices[i].idVendor &&
162 dev->id.product == devices[i].idProduct) {
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500163 ff_bits = devices[i].ff;
Anssi Hannuladc76c912006-07-19 01:40:55 -0400164 break;
165 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 }
167
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500168 for (i = 0; ff_bits[i] >= 0; i++)
169 set_bit(ff_bits[i], dev->ffbit);
170
Anssi Hannuladc76c912006-07-19 01:40:55 -0400171 error = input_ff_create_memless(dev, NULL, hid_lgff_play);
172 if (error)
173 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Sergey Belyashov2bea94d2008-09-02 17:31:16 +0200175 if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
176 dev->ff->set_autocenter = hid_lgff_set_autocenter;
177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178 printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
179
180 return 0;
181}