// SPDX-License-Identifier: GPL-2.0-or-later /* * 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 */ /* */ #include <linux/hid.h> #include <linux/input.h> #include <linux/slab.h> #include <linux/module.h> #include "hid-ids.h" #define THRUSTMASTER_DEVICE_ID_2_IN_1_DT 0xb320 static const signed short ff_rumble[] = { FF_RUMBLE, -1 }; static const signed short ff_joystick[] = { FF_CONSTANT, -1 }; #ifdef CONFIG_THRUSTMASTER_FF /* Usages for thrustmaster devices I know about */ #define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) struct tmff_device { struct hid_report *report; struct hid_field *ff_field; }; /* Changes values from 0 to 0xffff into values from minimum to maximum */ static inline int tmff_scale_u16(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; } /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ static inline int tmff_scale_s8(int in, int minimum, int maximum) { int ret; ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; if (ret < minimum) return minimum; if (ret > maximum) return maximum; return ret; } static int 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; struct hid_field *ff_field = tmff->ff_field; int x, y; int left, right; /* Rumbling */ switch (effect->type) { case FF_CONSTANT: x = tmff_scale_s8(effect->u.ramp.start_level, ff_field->logical_minimum, ff_field->logical_maximum); y = tmff_scale_s8(effect->u.ramp.end_level, ff_field->logical_minimum, ff_field->logical_maximum); dbg_hid("(x, y)=(%04x, %04x)\n", x, y); ff_field->value[0] = x; ff_field->value[1] = y; hid_hw_request(hid, tmff->report, HID_REQ_SET_REPORT); break; case FF_RUMBLE: left = tmff_scale_u16(effect->u.rumble.weak_magnitude, ff_field->logical_minimum, ff_field->logical_maximum); right = tmff_scale_u16(effect->u.rumble.strong_magnitude, ff_field->logical_minimum, ff_field->logical_maximum); /* 2-in-1 strong motor is left */ if (hid->product == THRUSTMASTER_DEVICE_ID_2_IN_1_DT) swap(left, right); dbg_hid("(left,right)=(%08x, %08x)\n", left, right); ff_field->value[0] = left; ff_field->value[1] = right; hid_hw_request(hid, tmff->report, HID_REQ_SET_REPORT); break; } return 0; } static int tmff_init(struct hid_device *hid, const signed short *ff_bits) { struct tmff_device *tmff; struct hid_report *report; struct list_head *report_list; struct hid_input *hidinput; struct input_dev *input_dev; int error; int i; if (list_empty(&hid->inputs)) { hid_err(hid, "no inputs found\n"); return -ENODEV; } hidinput = list_entry(hid->inputs.next, struct hid_input, list); input_dev = hidinput->input; tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); if (!tmff) return -ENOMEM; /* Find the report to use */ report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; list_for_each_entry(report, report_list, list) { 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_FF: if (field->report_count < 2) { hid_warn(hid, "ignoring FF field with report_count < 2\n"); continue; } if (field->logical_maximum == field->logical_minimum) { hid_warn(hid, "ignoring FF field with logical_maximum == logical_minimum\n"); continue; } if (tmff->report && tmff->report != report) { hid_warn(hid, "ignoring FF field in other report\n"); continue; } if (tmff->ff_field && tmff->ff_field != field) { hid_warn(hid, "ignoring duplicate FF field\n"); continue; } tmff->report = report; tmff->ff_field = field; for (i = 0; ff_bits[i] >= 0; i++) set_bit(ff_bits[i], input_dev->ffbit); break; default: hid_warn(hid, "ignoring unknown output usage %08x\n", field->usage[0].hid); continue; } } } if (!tmff->report) { hid_err(hid, "can't find FF field in output reports\n"); error = -ENODEV; goto fail; } error = input_ff_create_memless(input_dev, tmff, tmff_play); if (error) goto fail; hid_info(hid, "force feedback for ThrustMaster devices by Zinx Verituse <zinx@epicsol.org>\n"); return 0; fail: kfree(tmff); return error; } #else static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits) { return 0; } #endif static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); goto err; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (ret) { hid_err(hdev, "hw start failed\n"); goto err; } tmff_init(hdev, (void *)id->driver_data); return 0; err: return ret; } static const struct hid_device_id tm_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), /* FireStorm Dual Power 2 (and 3) */ .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, THRUSTMASTER_DEVICE_ID_2_IN_1_DT), /* Dual Trigger 2-in-1 */ .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323), /* Dual Trigger 3-in-1 (PC Mode) */ .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324), /* Dual Trigger 3-in-1 (PS3 Mode) */ .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb605), /* NASCAR PRO FF2 Wheel */ .driver_data = (unsigned long)ff_joystick }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ .driver_data = (unsigned long)ff_rumble }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653), /* RGT Force Feedback CLUTCH Raging Wheel */ .driver_data = (unsigned long)ff_joystick }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ .driver_data = (unsigned long)ff_joystick }, { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a), /* F430 Force Feedback Wheel */ .driver_data = (unsigned long)ff_joystick }, { } }; MODULE_DEVICE_TABLE(hid, tm_devices); static struct hid_driver tm_driver = { .name = "thrustmaster", .id_table = tm_devices, .probe = tm_probe, }; module_hid_driver(tm_driver); MODULE_DESCRIPTION("Force feedback support for various HID compliant devices by ThrustMaster"); MODULE_LICENSE("GPL");