2005-04-17 05:20:36 +07:00
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/*
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* Force feedback support for hid-compliant for some of the devices from
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* Logitech, namely:
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* - WingMan Cordless RumblePad
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* - WingMan Force 3D
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*
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* Copyright (c) 2002-2004 Johann Deneux
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2006-07-19 12:40:55 +07:00
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* Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
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2005-04-17 05:20:36 +07:00
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so by
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* e-mail - mail your message to <johann.deneux@it.uu.se>
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*/
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#include <linux/input.h>
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#include <linux/usb.h>
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2006-12-09 00:40:44 +07:00
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#include <linux/hid.h>
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2006-12-09 00:41:03 +07:00
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#include "usbhid.h"
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2005-04-17 05:20:36 +07:00
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struct device_type {
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u16 idVendor;
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u16 idProduct;
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2006-07-19 12:40:55 +07:00
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const signed short *ff;
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2005-04-17 05:20:36 +07:00
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};
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2006-07-19 12:40:55 +07:00
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static const signed short ff_rumble[] = {
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2005-04-17 05:20:36 +07:00
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FF_RUMBLE,
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-1
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};
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2006-07-19 12:40:55 +07:00
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static const signed short ff_joystick[] = {
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2005-04-17 05:20:36 +07:00
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FF_CONSTANT,
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-1
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};
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2006-07-19 12:40:55 +07:00
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static const struct device_type devices[] = {
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{ 0x046d, 0xc211, ff_rumble },
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{ 0x046d, 0xc219, ff_rumble },
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{ 0x046d, 0xc283, ff_joystick },
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{ 0x0000, 0x0000, ff_joystick }
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2005-04-17 05:20:36 +07:00
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};
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2006-07-19 12:40:55 +07:00
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static int hid_lgff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
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{
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struct hid_device *hid = dev->private;
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct hid_report *report = list_entry(report_list->next, struct hid_report, list);
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int x, y;
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unsigned int left, right;
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#define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff
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switch (effect->type) {
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case FF_CONSTANT:
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x = effect->u.ramp.start_level + 0x7f; /* 0x7f is center */
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y = effect->u.ramp.end_level + 0x7f;
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CLAMP(x);
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CLAMP(y);
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report->field[0]->value[0] = 0x51;
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report->field[0]->value[1] = 0x08;
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report->field[0]->value[2] = x;
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report->field[0]->value[3] = y;
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dbg("(x, y)=(%04x, %04x)", x, y);
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2006-12-09 00:41:03 +07:00
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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2006-07-19 12:40:55 +07:00
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break;
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case FF_RUMBLE:
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right = effect->u.rumble.strong_magnitude;
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left = effect->u.rumble.weak_magnitude;
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right = right * 0xff / 0xffff;
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left = left * 0xff / 0xffff;
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CLAMP(left);
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CLAMP(right);
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report->field[0]->value[0] = 0x42;
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report->field[0]->value[1] = 0x00;
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report->field[0]->value[2] = left;
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report->field[0]->value[3] = right;
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dbg("(left, right)=(%04x, %04x)", left, right);
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2006-12-09 00:41:03 +07:00
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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2006-07-19 12:40:55 +07:00
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break;
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}
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return 0;
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}
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2005-04-17 05:20:36 +07:00
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int hid_lgff_init(struct hid_device* hid)
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{
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2006-07-19 12:40:55 +07:00
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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struct hid_report *report;
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struct hid_field *field;
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int error;
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int i, j;
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2005-04-17 05:20:36 +07:00
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/* Find the report to use */
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2006-07-19 12:40:55 +07:00
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if (list_empty(report_list)) {
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2005-04-17 05:20:36 +07:00
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err("No output report found");
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return -1;
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}
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2006-07-19 12:40:55 +07:00
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2005-04-17 05:20:36 +07:00
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/* Check that the report looks ok */
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2006-07-19 12:40:55 +07:00
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report = list_entry(report_list->next, struct hid_report, list);
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2005-04-17 05:20:36 +07:00
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if (!report) {
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err("NULL output report");
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return -1;
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}
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2006-07-19 12:40:55 +07:00
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2005-04-17 05:20:36 +07:00
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field = report->field[0];
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if (!field) {
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err("NULL field");
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return -1;
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}
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2006-07-19 12:40:55 +07:00
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for (i = 0; i < ARRAY_SIZE(devices); i++) {
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if (dev->id.vendor == devices[i].idVendor &&
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dev->id.product == devices[i].idProduct) {
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for (j = 0; devices[i].ff[j] >= 0; j++)
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set_bit(devices[i].ff[j], dev->ffbit);
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break;
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2005-04-17 05:20:36 +07:00
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}
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}
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2006-07-19 12:40:55 +07:00
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error = input_ff_create_memless(dev, NULL, hid_lgff_play);
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if (error)
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return error;
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2005-04-17 05:20:36 +07:00
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2006-07-19 12:40:55 +07:00
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printk(KERN_INFO "Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
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2005-04-17 05:20:36 +07:00
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return 0;
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}
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