148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*
|
|
* Force feedback support for various HID compliant devices by ThrustMaster:
|
|
* ThrustMaster FireStorm Dual Power 2
|
|
* and possibly others whose device ids haven't been added.
|
|
*
|
|
* Modified to support ThrustMaster devices by Zinx Verituse
|
|
* on 2003-01-25 from the Logitech force feedback driver,
|
|
* which is by Johann Deneux.
|
|
*
|
|
* Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org>
|
|
* Copyright (c) 2002 Johann Deneux
|
|
*/
|
|
|
|
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/input.h>
|
|
|
|
#undef DEBUG
|
|
#include <linux/usb.h>
|
|
|
|
#include <linux/hid.h>
|
|
#include "usbhid.h"
|
|
|
|
/* Usages for thrustmaster devices I know about */
|
|
#define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK | 0xbb)
|
|
|
|
|
|
struct tmff_device {
|
|
struct hid_report *report;
|
|
struct hid_field *rumble;
|
|
};
|
|
|
|
/* Changes values from 0 to 0xffff into values from minimum to maximum */
|
|
static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
|
|
{
|
|
int ret;
|
|
|
|
ret = (in * (maximum - minimum) / 0xffff) + minimum;
|
|
if (ret < minimum)
|
|
return minimum;
|
|
if (ret > maximum)
|
|
return maximum;
|
|
return ret;
|
|
}
|
|
|
|
static int hid_tmff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
|
|
{
|
|
struct hid_device *hid = input_get_drvdata(dev);
|
|
struct tmff_device *tmff = data;
|
|
int left, right; /* Rumbling */
|
|
|
|
left = hid_tmff_scale(effect->u.rumble.weak_magnitude,
|
|
tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
|
right = hid_tmff_scale(effect->u.rumble.strong_magnitude,
|
|
tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
|
|
|
|
tmff->rumble->value[0] = left;
|
|
tmff->rumble->value[1] = right;
|
|
dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
|
|
usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hid_tmff_init(struct hid_device *hid)
|
|
{
|
|
struct tmff_device *tmff;
|
|
struct list_head *pos;
|
|
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
|
|
struct input_dev *input_dev = hidinput->input;
|
|
int error;
|
|
|
|
tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
|
|
if (!tmff)
|
|
return -ENOMEM;
|
|
|
|
/* Find the report to use */
|
|
__list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) {
|
|
struct hid_report *report = (struct hid_report *)pos;
|
|
int fieldnum;
|
|
|
|
for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) {
|
|
struct hid_field *field = report->field[fieldnum];
|
|
|
|
if (field->maxusage <= 0)
|
|
continue;
|
|
|
|
switch (field->usage[0].hid) {
|
|
case THRUSTMASTER_USAGE_RUMBLE_LR:
|
|
if (field->report_count < 2) {
|
|
warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with report_count < 2");
|
|
continue;
|
|
}
|
|
|
|
if (field->logical_maximum == field->logical_minimum) {
|
|
warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with logical_maximum == logical_minimum");
|
|
continue;
|
|
}
|
|
|
|
if (tmff->report && tmff->report != report) {
|
|
warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR in other report");
|
|
continue;
|
|
}
|
|
|
|
if (tmff->rumble && tmff->rumble != field) {
|
|
warn("ignoring duplicate THRUSTMASTER_USAGE_RUMBLE_LR");
|
|
continue;
|
|
}
|
|
|
|
tmff->report = report;
|
|
tmff->rumble = field;
|
|
|
|
set_bit(FF_RUMBLE, input_dev->ffbit);
|
|
break;
|
|
|
|
default:
|
|
warn("ignoring unknown output usage %08x", field->usage[0].hid);
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
error = input_ff_create_memless(input_dev, tmff, hid_tmff_play);
|
|
if (error) {
|
|
kfree(tmff);
|
|
return error;
|
|
}
|
|
|
|
info("Force feedback for ThrustMaster rumble pad devices by Zinx Verituse <zinx@epicsol.org>");
|
|
|
|
return 0;
|
|
}
|
|
|