/* * Force feedback support for Logitech Speed Force Wireless * * http://wiibrew.org/wiki/Logitech_USB_steering_wheel * * Copyright (c) 2010 Simon Wood */ /* * 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 #include #include #include "usbhid/usbhid.h" #include "hid-lg.h" #include "hid-ids.h" #define DFGT_REV_MAJ 0x13 #define DFGT_REV_MIN 0x22 #define DFP_REV_MAJ 0x11 #define DFP_REV_MIN 0x06 #define FFEX_REV_MAJ 0x21 #define FFEX_REV_MIN 0x00 #define G25_REV_MAJ 0x12 #define G25_REV_MIN 0x22 #define G27_REV_MAJ 0x12 #define G27_REV_MIN 0x38 static const signed short lg4ff_wheel_effects[] = { FF_CONSTANT, FF_AUTOCENTER, -1 }; struct lg4ff_wheel { const __u32 product_id; const signed short *ff_effects; const __u16 min_range; const __u16 max_range; }; static const struct lg4ff_wheel lg4ff_devices[] = { {USB_DEVICE_ID_LOGITECH_WHEEL, lg4ff_wheel_effects, 40, 270}, {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL, lg4ff_wheel_effects, 40, 270}, {USB_DEVICE_ID_LOGITECH_DFP_WHEEL, lg4ff_wheel_effects, 40, 900}, {USB_DEVICE_ID_LOGITECH_G25_WHEEL, lg4ff_wheel_effects, 40, 900}, {USB_DEVICE_ID_LOGITECH_DFGT_WHEEL, lg4ff_wheel_effects, 40, 900}, {USB_DEVICE_ID_LOGITECH_G27_WHEEL, lg4ff_wheel_effects, 40, 900}, {USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2, lg4ff_wheel_effects, 40, 270}, {USB_DEVICE_ID_LOGITECH_WII_WHEEL, lg4ff_wheel_effects, 40, 270} }; struct lg4ff_native_cmd { const __u8 cmd_num; /* Number of commands to send */ const __u8 cmd[]; }; struct lg4ff_usb_revision { const __u16 rev_maj; const __u16 rev_min; const struct lg4ff_native_cmd *command; }; static const struct lg4ff_native_cmd native_dfp = { 1, {0xf8, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00} }; static const struct lg4ff_native_cmd native_dfgt = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ 0xf8, 0x09, 0x03, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ }; static const struct lg4ff_native_cmd native_g25 = { 1, {0xf8, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00} }; static const struct lg4ff_native_cmd native_g27 = { 2, {0xf8, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, /* 1st command */ 0xf8, 0x09, 0x04, 0x01, 0x00, 0x00, 0x00} /* 2nd command */ }; static const struct lg4ff_usb_revision lg4ff_revs[] = { {DFGT_REV_MAJ, DFGT_REV_MIN, &native_dfgt}, /* Driving Force GT */ {DFP_REV_MAJ, DFP_REV_MIN, &native_dfp}, /* Driving Force Pro */ {G25_REV_MAJ, G25_REV_MIN, &native_g25}, /* G25 */ {G27_REV_MAJ, G27_REV_MIN, &native_g27}, /* G27 */ }; static int hid_lg4ff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct hid_report *report = list_entry(report_list->next, struct hid_report, list); int x; #define CLAMP(x) if (x < 0) x = 0; if (x > 0xff) x = 0xff switch (effect->type) { case FF_CONSTANT: x = effect->u.ramp.start_level + 0x80; /* 0x80 is no force */ CLAMP(x); report->field[0]->value[0] = 0x11; /* Slot 1 */ report->field[0]->value[1] = 0x08; report->field[0]->value[2] = x; report->field[0]->value[3] = 0x80; report->field[0]->value[4] = 0x00; report->field[0]->value[5] = 0x00; report->field[0]->value[6] = 0x00; usbhid_submit_report(hid, report, USB_DIR_OUT); break; } return 0; } static void hid_lg4ff_set_autocenter(struct input_dev *dev, u16 magnitude) { struct hid_device *hid = input_get_drvdata(dev); struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct hid_report *report = list_entry(report_list->next, struct hid_report, list); report->field[0]->value[0] = 0xfe; report->field[0]->value[1] = 0x0d; report->field[0]->value[2] = magnitude >> 13; report->field[0]->value[3] = magnitude >> 13; report->field[0]->value[4] = magnitude >> 8; report->field[0]->value[5] = 0x00; report->field[0]->value[6] = 0x00; usbhid_submit_report(hid, report, USB_DIR_OUT); } static void hid_lg4ff_switch_native(struct hid_device *hid, const struct lg4ff_native_cmd *cmd) { struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct hid_report *report = list_entry(report_list->next, struct hid_report, list); __u8 i, j; j = 0; while (j < 7*cmd->cmd_num) { for (i = 0; i < 7; i++) report->field[0]->value[i] = cmd->cmd[j++]; usbhid_submit_report(hid, report, USB_DIR_OUT); } } int lg4ff_init(struct hid_device *hid) { struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list); struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; struct input_dev *dev = hidinput->input; struct hid_report *report; struct hid_field *field; struct usb_device_descriptor *udesc = 0; int error, i, j; __u16 bcdDevice, rev_maj, rev_min; /* Find the report to use */ if (list_empty(report_list)) { hid_err(hid, "No output report found\n"); return -1; } /* Check that the report looks ok */ report = list_entry(report_list->next, struct hid_report, list); if (!report) { hid_err(hid, "NULL output report\n"); return -1; } field = report->field[0]; if (!field) { hid_err(hid, "NULL field\n"); return -1; } /* Check what wheel has been connected */ for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) { if (hid->product == lg4ff_devices[i].product_id) { dbg_hid("Found compatible device, product ID %04X\n", lg4ff_devices[i].product_id); break; } } if (i == ARRAY_SIZE(lg4ff_devices)) { hid_err(hid, "Device is not supported by lg4ff driver. If you think it should be, consider reporting a bug to" "LKML, Simon Wood or Michal Maly \n"); return -1; } /* Attempt to switch wheel to native mode when applicable */ udesc = &(hid_to_usb_dev(hid)->descriptor); if (!udesc) { hid_err(hid, "NULL USB device descriptor\n"); return -1; } bcdDevice = le16_to_cpu(udesc->bcdDevice); rev_maj = bcdDevice >> 8; rev_min = bcdDevice & 0xff; if (lg4ff_devices[i].product_id == USB_DEVICE_ID_LOGITECH_WHEEL) { dbg_hid("Generic wheel detected, can it do native?\n"); dbg_hid("USB revision: %2x.%02x\n", rev_maj, rev_min); for (j = 0; j < ARRAY_SIZE(lg4ff_revs); j++) { if (lg4ff_revs[j].rev_maj == rev_maj && lg4ff_revs[j].rev_min == rev_min) { hid_lg4ff_switch_native(hid, lg4ff_revs[j].command); hid_info(hid, "Switched to native mode\n"); } } } /* Set supported force feedback capabilities */ for (j = 0; lg4ff_devices[i].ff_effects[j] >= 0; j++) set_bit(lg4ff_devices[i].ff_effects[j], dev->ffbit); error = input_ff_create_memless(dev, NULL, hid_lg4ff_play); if (error) return error; if (test_bit(FF_AUTOCENTER, dev->ffbit)) dev->ff->set_autocenter = hid_lg4ff_set_autocenter; hid_info(hid, "Force feedback for Logitech Speed Force Wireless by Simon Wood \n"); return 0; }