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![Peter Gundermann](/assets/img/avatar_default.png)
Gere's a small patch to add support for the Logitech G27 wheel, since the prior patch only added FF support for the Driving Force Pro and G25. The patch contains the changes from the G25 and DFP, too. I tested the changes with wine/LFS and got full support for all axes and buttons. Signed-off: Peter Gundermann <slim-one@users.sourceforge.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
187 lines
5.1 KiB
C
187 lines
5.1 KiB
C
/*
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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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* Copyright (c) 2006 Anssi Hannula <anssi.hannula@gmail.com>
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/hid.h>
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#include "usbhid/usbhid.h"
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#include "hid-lg.h"
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struct dev_type {
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u16 idVendor;
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u16 idProduct;
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const signed short *ff;
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};
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static const signed short ff_rumble[] = {
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FF_RUMBLE,
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-1
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};
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static const signed short ff_joystick[] = {
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FF_CONSTANT,
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-1
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};
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static const signed short ff_joystick_ac[] = {
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FF_CONSTANT,
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FF_AUTOCENTER,
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-1
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};
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static const signed short ff_wheel[] = {
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FF_CONSTANT,
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FF_AUTOCENTER,
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-1
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};
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static const struct dev_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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{ 0x046d, 0xc286, ff_joystick_ac },
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{ 0x046d, 0xc287, ff_joystick_ac },
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{ 0x046d, 0xc293, ff_joystick },
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{ 0x046d, 0xc294, ff_wheel },
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{ 0x046d, 0xc298, ff_wheel },
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{ 0x046d, 0xc299, ff_wheel },
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{ 0x046d, 0xc29b, ff_wheel },
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{ 0x046d, 0xc295, ff_joystick },
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{ 0x046d, 0xca03, ff_wheel },
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};
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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 = input_get_drvdata(dev);
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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_hid("(x, y)=(%04x, %04x)\n", x, y);
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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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_hid("(left, right)=(%04x, %04x)\n", left, right);
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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break;
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}
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return 0;
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}
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static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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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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__s32 *value = report->field[0]->value;
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magnitude = (magnitude >> 12) & 0xf;
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*value++ = 0xfe;
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*value++ = 0x0d;
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*value++ = magnitude; /* clockwise strength */
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*value++ = magnitude; /* counter-clockwise strength */
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*value++ = 0x80;
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*value++ = 0x00;
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*value = 0x00;
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usbhid_submit_report(hid, report, USB_DIR_OUT);
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}
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int lgff_init(struct hid_device* hid)
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{
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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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const signed short *ff_bits = ff_joystick;
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int error;
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int i;
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/* Find the report to use */
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if (list_empty(report_list)) {
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hid_err(hid, "No output report found\n");
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return -1;
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}
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/* Check that the report looks ok */
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report = list_entry(report_list->next, struct hid_report, list);
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field = report->field[0];
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if (!field) {
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hid_err(hid, "NULL field\n");
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return -1;
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}
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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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ff_bits = devices[i].ff;
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break;
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}
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}
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for (i = 0; ff_bits[i] >= 0; i++)
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set_bit(ff_bits[i], dev->ffbit);
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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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if ( test_bit(FF_AUTOCENTER, dev->ffbit) )
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dev->ff->set_autocenter = hid_lgff_set_autocenter;
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pr_info("Force feedback for Logitech force feedback devices by Johann Deneux <johann.deneux@it.uu.se>\n");
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return 0;
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}
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