58037eb961
There have been many reports recently about broken HID devices, the diagnosis of which required users to recompile their kernels in order to be able to provide debugging output needed for coding a quirk for a particular device. This patch makes CONFIG_HID_DEBUG default y if !EMBEDDED and makes it possible to control debugging output produced by HID code by supplying 'debug=1' module parameter. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*
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* Force feedback support for various HID compliant devices by ThrustMaster:
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* ThrustMaster FireStorm Dual Power 2
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* and possibly others whose device ids haven't been added.
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*
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* Modified to support ThrustMaster devices by Zinx Verituse
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* on 2003-01-25 from the Logitech force feedback driver,
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* which is by Johann Deneux.
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*
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* Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org>
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* Copyright (c) 2002 Johann Deneux
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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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#include <linux/input.h>
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#undef DEBUG
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#include <linux/usb.h>
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#include <linux/hid.h>
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#include "usbhid.h"
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/* Usages for thrustmaster devices I know about */
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#define THRUSTMASTER_USAGE_RUMBLE_LR (HID_UP_GENDESK | 0xbb)
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struct tmff_device {
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struct hid_report *report;
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struct hid_field *rumble;
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};
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/* Changes values from 0 to 0xffff into values from minimum to maximum */
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static inline int hid_tmff_scale(unsigned int in, int minimum, int maximum)
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{
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int ret;
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ret = (in * (maximum - minimum) / 0xffff) + minimum;
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if (ret < minimum)
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return minimum;
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if (ret > maximum)
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return maximum;
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return ret;
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}
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static int hid_tmff_play(struct input_dev *dev, void *data, struct ff_effect *effect)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct tmff_device *tmff = data;
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int left, right; /* Rumbling */
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left = hid_tmff_scale(effect->u.rumble.weak_magnitude,
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tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
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right = hid_tmff_scale(effect->u.rumble.strong_magnitude,
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tmff->rumble->logical_minimum, tmff->rumble->logical_maximum);
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tmff->rumble->value[0] = left;
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tmff->rumble->value[1] = right;
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dbg_hid("(left,right)=(%08x, %08x)\n", left, right);
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usbhid_submit_report(hid, tmff->report, USB_DIR_OUT);
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return 0;
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}
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int hid_tmff_init(struct hid_device *hid)
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{
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struct tmff_device *tmff;
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struct list_head *pos;
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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struct input_dev *input_dev = hidinput->input;
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int error;
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tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL);
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if (!tmff)
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return -ENOMEM;
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/* Find the report to use */
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__list_for_each(pos, &hid->report_enum[HID_OUTPUT_REPORT].report_list) {
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struct hid_report *report = (struct hid_report *)pos;
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int fieldnum;
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for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) {
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struct hid_field *field = report->field[fieldnum];
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if (field->maxusage <= 0)
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continue;
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switch (field->usage[0].hid) {
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case THRUSTMASTER_USAGE_RUMBLE_LR:
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if (field->report_count < 2) {
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warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with report_count < 2");
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continue;
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}
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if (field->logical_maximum == field->logical_minimum) {
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warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR with logical_maximum == logical_minimum");
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continue;
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}
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if (tmff->report && tmff->report != report) {
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warn("ignoring THRUSTMASTER_USAGE_RUMBLE_LR in other report");
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continue;
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}
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if (tmff->rumble && tmff->rumble != field) {
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warn("ignoring duplicate THRUSTMASTER_USAGE_RUMBLE_LR");
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continue;
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}
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tmff->report = report;
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tmff->rumble = field;
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set_bit(FF_RUMBLE, input_dev->ffbit);
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break;
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default:
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warn("ignoring unknown output usage %08x", field->usage[0].hid);
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continue;
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}
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}
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}
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error = input_ff_create_memless(input_dev, tmff, hid_tmff_play);
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if (error) {
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kfree(tmff);
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return error;
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}
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info("Force feedback for ThrustMaster rumble pad devices by Zinx Verituse <zinx@epicsol.org>");
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return 0;
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}
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