132c88cbcSSimon Wood /* 232c88cbcSSimon Wood * Force feedback support for Logitech Speed Force Wireless 332c88cbcSSimon Wood * 432c88cbcSSimon Wood * http://wiibrew.org/wiki/Logitech_USB_steering_wheel 532c88cbcSSimon Wood * 632c88cbcSSimon Wood * Copyright (c) 2010 Simon Wood <simon@mungewell.org> 732c88cbcSSimon Wood */ 832c88cbcSSimon Wood 932c88cbcSSimon Wood /* 1032c88cbcSSimon Wood * This program is free software; you can redistribute it and/or modify 1132c88cbcSSimon Wood * it under the terms of the GNU General Public License as published by 1232c88cbcSSimon Wood * the Free Software Foundation; either version 2 of the License, or 1332c88cbcSSimon Wood * (at your option) any later version. 1432c88cbcSSimon Wood * 1532c88cbcSSimon Wood * This program is distributed in the hope that it will be useful, 1632c88cbcSSimon Wood * but WITHOUT ANY WARRANTY; without even the implied warranty of 1732c88cbcSSimon Wood * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1832c88cbcSSimon Wood * GNU General Public License for more details. 1932c88cbcSSimon Wood * 2032c88cbcSSimon Wood * You should have received a copy of the GNU General Public License 2132c88cbcSSimon Wood * along with this program; if not, write to the Free Software 2232c88cbcSSimon Wood * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 2332c88cbcSSimon Wood */ 2432c88cbcSSimon Wood 2532c88cbcSSimon Wood 2632c88cbcSSimon Wood #include <linux/input.h> 2732c88cbcSSimon Wood #include <linux/usb.h> 2832c88cbcSSimon Wood #include <linux/hid.h> 2932c88cbcSSimon Wood 3032c88cbcSSimon Wood #include "usbhid/usbhid.h" 3132c88cbcSSimon Wood #include "hid-lg.h" 32*7362cd22SMichal Malý #include "hid-ids.h" 3332c88cbcSSimon Wood 34*7362cd22SMichal Malý static const signed short lg4ff_wheel_effects[] = { 3532c88cbcSSimon Wood FF_CONSTANT, 3632c88cbcSSimon Wood FF_AUTOCENTER, 3732c88cbcSSimon Wood -1 3832c88cbcSSimon Wood }; 3932c88cbcSSimon Wood 40*7362cd22SMichal Malý struct lg4ff_wheel { 41*7362cd22SMichal Malý const __u32 product_id; 42*7362cd22SMichal Malý const signed short *ff_effects; 43*7362cd22SMichal Malý const __u16 min_range; 44*7362cd22SMichal Malý const __u16 max_range; 45*7362cd22SMichal Malý }; 46*7362cd22SMichal Malý 47*7362cd22SMichal Malý static const struct lg4ff_wheel lg4ff_devices[] = { 48*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270}, 49*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270}, 50*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900}, 51*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900}, 52*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900}, 53*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900}, 54*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270}, 55*7362cd22SMichal Malý {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270} 56*7362cd22SMichal Malý }; 57*7362cd22SMichal Malý 5832c88cbcSSimon Wood static int hid_lg4ff_play(struct input_dev *dev, void *data, 5932c88cbcSSimon Wood struct ff_effect *effect) 6032c88cbcSSimon Wood { 6132c88cbcSSimon Wood struct hid_device *hid = input_get_drvdata(dev); 6232c88cbcSSimon Wood struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 6332c88cbcSSimon Wood struct hid_report *report = list_entry(report_list->next, struct hid_report, list); 6432c88cbcSSimon Wood int x; 6532c88cbcSSimon Wood 6632c88cbcSSimon Wood #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff 6732c88cbcSSimon Wood 6832c88cbcSSimon Wood switch (effect->type) { 6932c88cbcSSimon Wood case FF_CONSTANT: 7032c88cbcSSimon Wood x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ 7132c88cbcSSimon Wood CLAMP(x); 7232c88cbcSSimon Wood report->field[0]->value[0] = 0x11; /* Slot 1 */ 73*7362cd22SMichal Malý report->field[0]->value[1] = 0x08; 7432c88cbcSSimon Wood report->field[0]->value[2] = x; 75*7362cd22SMichal Malý report->field[0]->value[3] = 0x80; 7632c88cbcSSimon Wood report->field[0]->value[4] = 0x00; 77*7362cd22SMichal Malý report->field[0]->value[5] = 0x00; 7832c88cbcSSimon Wood report->field[0]->value[6] = 0x00; 7932c88cbcSSimon Wood 8032c88cbcSSimon Wood usbhid_submit_report(hid, report, USB_DIR_OUT); 8132c88cbcSSimon Wood break; 8232c88cbcSSimon Wood } 8332c88cbcSSimon Wood return 0; 8432c88cbcSSimon Wood } 8532c88cbcSSimon Wood 8632c88cbcSSimon Wood static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude) 8732c88cbcSSimon Wood { 8832c88cbcSSimon Wood struct hid_device *hid = input_get_drvdata(dev); 8932c88cbcSSimon Wood struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 9032c88cbcSSimon Wood struct hid_report *report = list_entry(report_list->next, struct hid_report, list); 9132c88cbcSSimon Wood 92*7362cd22SMichal Malý report->field[0]->value[0] = 0xfe; 93*7362cd22SMichal Malý report->field[0]->value[1] = 0x0d; 94*7362cd22SMichal Malý report->field[0]->value[2] = magnitude >> 13; 95*7362cd22SMichal Malý report->field[0]->value[3] = magnitude >> 13; 96*7362cd22SMichal Malý report->field[0]->value[4] = magnitude >> 8; 97*7362cd22SMichal Malý report->field[0]->value[5] = 0x00; 98*7362cd22SMichal Malý report->field[0]->value[6] = 0x00; 9932c88cbcSSimon Wood 10032c88cbcSSimon Wood usbhid_submit_report(hid, report, USB_DIR_OUT); 10132c88cbcSSimon Wood } 10232c88cbcSSimon Wood 10332c88cbcSSimon Wood 10432c88cbcSSimon Wood int lg4ff_init(struct hid_device *hid) 10532c88cbcSSimon Wood { 10632c88cbcSSimon Wood struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); 10732c88cbcSSimon Wood struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 10832c88cbcSSimon Wood struct input_dev *dev = hidinput->input; 10932c88cbcSSimon Wood struct hid_report *report; 11032c88cbcSSimon Wood struct hid_field *field; 111*7362cd22SMichal Malý int error, i, j; 11232c88cbcSSimon Wood 11332c88cbcSSimon Wood /* Find the report to use */ 11432c88cbcSSimon Wood if (list_empty(report_list)) { 1154291ee30SJoe Perches hid_err(hid, "No output report found\n"); 11632c88cbcSSimon Wood return -1; 11732c88cbcSSimon Wood } 11832c88cbcSSimon Wood 11932c88cbcSSimon Wood /* Check that the report looks ok */ 12032c88cbcSSimon Wood report = list_entry(report_list->next, struct hid_report, list); 12132c88cbcSSimon Wood if (!report) { 1224291ee30SJoe Perches hid_err(hid, "NULL output report\n"); 12332c88cbcSSimon Wood return -1; 12432c88cbcSSimon Wood } 12532c88cbcSSimon Wood 12632c88cbcSSimon Wood field = report->field[0]; 12732c88cbcSSimon Wood if (!field) { 1284291ee30SJoe Perches hid_err(hid, "NULL field\n"); 12932c88cbcSSimon Wood return -1; 13032c88cbcSSimon Wood } 13132c88cbcSSimon Wood 132*7362cd22SMichal Malý /* Check what wheel has been connected */ 133*7362cd22SMichal Malý for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { 134*7362cd22SMichal Malý if (hid->product == lg4ff_devices[i].product_id) { 135*7362cd22SMichal Malý dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); 136*7362cd22SMichal Malý break; 137*7362cd22SMichal Malý } 138*7362cd22SMichal Malý } 139*7362cd22SMichal Malý 140*7362cd22SMichal Malý if (i == ARRAY_SIZE(lg4ff_devices)) { 141*7362cd22SMichal Malý hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" 142*7362cd22SMichal Malý "LKML, Simon Wood <simon@mungewell.org> or Michal Maly <madcatxster@gmail.com>\n"); 143*7362cd22SMichal Malý return -1; 144*7362cd22SMichal Malý } 145*7362cd22SMichal Malý 146*7362cd22SMichal Malý /* Set supported force feedback capabilities */ 147*7362cd22SMichal Malý for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) 148*7362cd22SMichal Malý set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); 14932c88cbcSSimon Wood 15032c88cbcSSimon Wood error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); 15132c88cbcSSimon Wood 15232c88cbcSSimon Wood if (error) 15332c88cbcSSimon Wood return error; 15432c88cbcSSimon Wood 15532c88cbcSSimon Wood if (test_bit(FF_AUTOCENTER, dev->ffbit)) 15632c88cbcSSimon Wood dev->ff->set_autocenter = hid_lg4ff_set_autocenter; 15732c88cbcSSimon Wood 1584291ee30SJoe Perches hid_info(hid, "Force feedback for Logitech Speed Force Wireless by Simon Wood <simon@mungewell.org>\n"); 15932c88cbcSSimon Wood return 0; 16032c88cbcSSimon Wood } 16132c88cbcSSimon Wood 162