2 * Force feedback support for hid-compliant for some of the devices from
4 * - WingMan Cordless RumblePad
7 * Copyright (c) 2002-2004 Johann Deneux
8 * Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
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.
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.
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
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>
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/input.h>
33 #include <linux/usb.h>
34 #include <linux/hid.h>
36 #include "usbhid/usbhid.h"
42 const signed short *ff;
45 static const signed short ff_rumble[] = {
50 static const signed short ff_joystick[] = {
55 static const signed short ff_joystick_ac[] = {
61 static const signed short ff_wheel[] = {
67 static const struct dev_type devices[] = {
68 { 0x046d, 0xc211, ff_rumble },
69 { 0x046d, 0xc219, ff_rumble },
70 { 0x046d, 0xc283, ff_joystick },
71 { 0x046d, 0xc286, ff_joystick_ac },
72 { 0x046d, 0xc287, ff_joystick_ac },
73 { 0x046d, 0xc293, ff_joystick },
74 { 0x046d, 0xc294, ff_wheel },
75 { 0x046d, 0xc298, ff_wheel },
76 { 0x046d, 0xc299, ff_wheel },
77 { 0x046d, 0xc29b, ff_wheel },
78 { 0x046d, 0xc295, ff_joystick },
79 { 0x046d, 0xc298, ff_wheel },
80 { 0x046d, 0xc299, ff_wheel },
81 { 0x046d, 0xca03, ff_wheel },
84 static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
86 struct hid_device *hid = input_get_drvdata(dev);
87 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
88 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
90 unsigned int left, right;
92 #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
94 switch (effect->type) {
96 x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
97 y = effect->u.ramp.end_level + 0x7f;
100 report->field[0]->value[0] = 0x51;
101 report->field[0]->value[1] = 0x08;
102 report->field[0]->value[2] = x;
103 report->field[0]->value[3] = y;
104 dbg_hid("(x, y)=(%04x, %04x)\n", x, y);
105 usbhid_submit_report(hid, report, USB_DIR_OUT);
109 right = effect->u.rumble.strong_magnitude;
110 left = effect->u.rumble.weak_magnitude;
111 right = right * 0xff / 0xffff;
112 left = left * 0xff / 0xffff;
115 report->field[0]->value[0] = 0x42;
116 report->field[0]->value[1] = 0x00;
117 report->field[0]->value[2] = left;
118 report->field[0]->value[3] = right;
119 dbg_hid("(left, right)=(%04x, %04x)\n", left, right);
120 usbhid_submit_report(hid, report, USB_DIR_OUT);
126 static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
128 struct hid_device *hid = input_get_drvdata(dev);
129 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
130 struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
131 __s32 *value = report->field[0]->value;
132 magnitude = (magnitude >> 12) & 0xf;
135 *value++ = magnitude; /* clockwise strength */
136 *value++ = magnitude; /* counter-clockwise strength */
140 usbhid_submit_report(hid, report, USB_DIR_OUT);
143 int lgff_init(struct hid_device* hid)
145 struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
146 struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
147 struct input_dev *dev = hidinput->input;
148 struct hid_report *report;
149 struct hid_field *field;
150 const signed short *ff_bits = ff_joystick;
154 /* Find the report to use */
155 if (list_empty(report_list)) {
156 hid_err(hid, "No output report found\n");
160 /* Check that the report looks ok */
161 report = list_entry(report_list->next, struct hid_report, list);
162 field = report->field[0];
164 hid_err(hid, "NULL field\n");
168 for (i = 0; i < ARRAY_SIZE(devices); i++) {
169 if (dev->id.vendor == devices[i].idVendor &&
170 dev->id.product == devices[i].idProduct) {
171 ff_bits = devices[i].ff;
176 for (i = 0; ff_bits[i] >= 0; i++)
177 set_bit(ff_bits[i], dev->ffbit);
179 error = input_ff_create_memless(dev, NULL, hid_lgff_play);
183 if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
184 dev->ff->set_autocenter = hid_lgff_set_autocenter;
186 pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");