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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
Joe Perches4291ee32010-12-09 19:29:03 -080030#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <linux/input.h>
Jiri Kosinadde58452006-12-08 18:40:44 +010033#include <linux/hid.h>
Jiri Slaby606bd0a2008-07-04 23:06:45 +020034
Jiri Slaby606bd0a2008-07-04 23:06:45 +020035#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
Kay Sieversf9f852d2006-10-07 21:54:55 +020059static const struct dev_type devices[] = {
Anssi Hannuladc76c912006-07-19 01:40:55 -040060 { 0x046d, 0xc211, ff_rumble },
61 { 0x046d, 0xc219, ff_rumble },
62 { 0x046d, 0xc283, ff_joystick },
Sergey Belyashovf0bca452009-05-15 16:05:57 +020063 { 0x046d, 0xc286, ff_joystick_ac },
Gary Stein74f292c2010-01-13 00:25:58 +010064 { 0x046d, 0xc287, ff_joystick_ac },
Jiri Kosinafd30ea82009-06-23 12:11:31 +020065 { 0x046d, 0xc293, ff_joystick },
Valentin Zagura130b1ab2007-02-18 01:41:27 -050066 { 0x046d, 0xc295, ff_joystick },
Linus Torvalds1da177e2005-04-16 15:20:36 -070067};
68
Anssi Hannuladc76c912006-07-19 01:40:55 -040069static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
70{
Dmitry Torokhove0712982007-05-09 10:17:31 +020071 struct hid_device *hid = input_get_drvdata(dev);
Anssi Hannuladc76c912006-07-19 01:40:55 -040072 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
73 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
74 int x, y;
75 unsigned int left, right;
76
77#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
78
79 switch (effect->type) {
80 case FF_CONSTANT:
81 x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
82 y = effect->u.ramp.end_level + 0x7f;
83 CLAMP(x);
84 CLAMP(y);
85 report->field[0]->value[0] = 0x51;
86 report->field[0]->value[1] = 0x08;
87 report->field[0]->value[2] = x;
88 report->field[0]->value[3] = y;
Jiri Kosina58037eb2007-05-30 15:07:13 +020089 dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
Benjamin Tissoiresd88142722013-02-25 11:31:46 +010090 hid_hw_request(hid, report, HID_REQ_SET_REPORT);
Anssi Hannuladc76c912006-07-19 01:40:55 -040091 break;
92
93 case FF_RUMBLE:
94 right = effect->u.rumble.strong_magnitude;
95 left = effect->u.rumble.weak_magnitude;
96 right = right * 0xff / 0xffff;
97 left = left * 0xff / 0xffff;
98 CLAMP(left);
99 CLAMP(right);
100 report->field[0]->value[0] = 0x42;
101 report->field[0]->value[1] = 0x00;
102 report->field[0]->value[2] = left;
103 report->field[0]->value[3] = right;
Jiri Kosina58037eb2007-05-30 15:07:13 +0200104 dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
Benjamin Tissoiresd88142722013-02-25 11:31:46 +0100105 hid_hw_request(hid, report, HID_REQ_SET_REPORT);
Anssi Hannuladc76c912006-07-19 01:40:55 -0400106 break;
107 }
108 return 0;
109}
110
Sergey Belyashov2bea94d2008-09-02 17:31:16 +0200111static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
112{
113 struct hid_device *hid = input_get_drvdata(dev);
114 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
115 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
116 __s32 *value = report->field[0]->value;
117 magnitude = (magnitude >> 12) & 0xf;
118 *value++ = 0xfe;
119 *value++ = 0x0d;
120 *value++ = magnitude; /* clockwise strength */
121 *value++ = magnitude; /* counter-clockwise strength */
122 *value++ = 0x80;
123 *value++ = 0x00;
124 *value = 0x00;
Benjamin Tissoiresd88142722013-02-25 11:31:46 +0100125 hid_hw_request(hid, report, HID_REQ_SET_REPORT);
Sergey Belyashov2bea94d2008-09-02 17:31:16 +0200126}
127
Jiri Slaby606bd0a2008-07-04 23:06:45 +0200128int lgff_init(struct hid_device* hid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129{
Anssi Hannuladc76c912006-07-19 01:40:55 -0400130 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
131 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
132 struct input_dev *dev = hidinput->input;
133 struct hid_report *report;
134 struct hid_field *field;
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500135 const signed short *ff_bits = ff_joystick;
Anssi Hannuladc76c912006-07-19 01:40:55 -0400136 int error;
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500137 int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
139 /* Find the report to use */
Anssi Hannuladc76c912006-07-19 01:40:55 -0400140 if (list_empty(report_list)) {
Joe Perches4291ee32010-12-09 19:29:03 -0800141 hid_err(hid, "No output report found\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 return -1;
143 }
Anssi Hannuladc76c912006-07-19 01:40:55 -0400144
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 /* Check that the report looks ok */
Anssi Hannuladc76c912006-07-19 01:40:55 -0400146 report = list_entry(report_list->next, struct hid_report, list);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 field = report->field[0];
148 if (!field) {
Joe Perches4291ee32010-12-09 19:29:03 -0800149 hid_err(hid, "NULL field\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 return -1;
151 }
152
Anssi Hannuladc76c912006-07-19 01:40:55 -0400153 for (i = 0; i < ARRAY_SIZE(devices); i++) {
154 if (dev->id.vendor == devices[i].idVendor &&
155 dev->id.product == devices[i].idProduct) {
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500156 ff_bits = devices[i].ff;
Anssi Hannuladc76c912006-07-19 01:40:55 -0400157 break;
158 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 }
160
Dmitry Torokhov00a86912007-02-18 01:42:11 -0500161 for (i = 0; ff_bits[i] >= 0; i++)
162 set_bit(ff_bits[i], dev->ffbit);
163
Anssi Hannuladc76c912006-07-19 01:40:55 -0400164 error = input_ff_create_memless(dev, NULL, hid_lgff_play);
165 if (error)
166 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
Sergey Belyashov2bea94d2008-09-02 17:31:16 +0200168 if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
169 dev->ff->set_autocenter = hid_lgff_set_autocenter;
170
Joe Perches4291ee32010-12-09 19:29:03 -0800171 pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172
173 return 0;
174}