1/* 2 * Force feedback support for various HID compliant devices by ThrustMaster: 3 * ThrustMaster FireStorm Dual Power 2 4 * and possibly others whose device ids haven't been added. 5 * 6 * Modified to support ThrustMaster devices by Zinx Verituse 7 * on 2003-01-25 from the Logitech force feedback driver, 8 * which is by Johann Deneux. 9 * 10 * Copyright (c) 2003 Zinx Verituse <zinx@epicsol.org> 11 * Copyright (c) 2002 Johann Deneux 12 */ 13 14/* 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License as published by 17 * the Free Software Foundation; either version 2 of the License, or 18 * (at your option) any later version. 19 * 20 * This program is distributed in the hope that it will be useful, 21 * but WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 23 * GNU General Public License for more details. 24 * 25 * You should have received a copy of the GNU General Public License 26 * along with this program; if not, write to the Free Software 27 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 28 */ 29 30#include <linux/hid.h> 31#include <linux/input.h> 32#include <linux/slab.h> 33#include <linux/usb.h> 34 35#include "hid-ids.h" 36 37static const signed short ff_rumble[] = { 38 FF_RUMBLE, 39 -1 40}; 41 42static const signed short ff_joystick[] = { 43 FF_CONSTANT, 44 -1 45}; 46 47#ifdef CONFIG_THRUSTMASTER_FF 48#include "usbhid/usbhid.h" 49 50/* Usages for thrustmaster devices I know about */ 51#define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) 52 53struct tmff_device { 54 struct hid_report *report; 55 struct hid_field *ff_field; 56}; 57 58/* Changes values from 0 to 0xffff into values from minimum to maximum */ 59static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum) 60{ 61 int ret; 62 63 ret = (in * (maximum - minimum) / 0xffff) + minimum; 64 if (ret < minimum) 65 return minimum; 66 if (ret > maximum) 67 return maximum; 68 return ret; 69} 70 71/* Changes values from -0x80 to 0x7f into values from minimum to maximum */ 72static inline int tmff_scale_s8(int in, int minimum, int maximum) 73{ 74 int ret; 75 76 ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; 77 if (ret < minimum) 78 return minimum; 79 if (ret > maximum) 80 return maximum; 81 return ret; 82} 83 84static int tmff_play(struct input_dev *dev, void *data, 85 struct ff_effect *effect) 86{ 87 struct hid_device *hid = input_get_drvdata(dev); 88 struct tmff_device *tmff = data; 89 struct hid_field *ff_field = tmff->ff_field; 90 int x, y; 91 int left, right; /* Rumbling */ 92 93 switch (effect->type) { 94 case FF_CONSTANT: 95 x = tmff_scale_s8(effect->u.ramp.start_level, 96 ff_field->logical_minimum, 97 ff_field->logical_maximum); 98 y = tmff_scale_s8(effect->u.ramp.end_level, 99 ff_field->logical_minimum, 100 ff_field->logical_maximum); 101 102 dbg_hid("(x, y)=(%04x, %04x)\n", x, y); 103 ff_field->value[0] = x; 104 ff_field->value[1] = y; 105 usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); 106 break; 107 108 case FF_RUMBLE: 109 left = tmff_scale_u16(effect->u.rumble.weak_magnitude, 110 ff_field->logical_minimum, 111 ff_field->logical_maximum); 112 right = tmff_scale_u16(effect->u.rumble.strong_magnitude, 113 ff_field->logical_minimum, 114 ff_field->logical_maximum); 115 116 dbg_hid("(left,right)=(%08x, %08x)\n", left, right); 117 ff_field->value[0] = left; 118 ff_field->value[1] = right; 119 usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); 120 break; 121 } 122 return 0; 123} 124 125static int tmff_init(struct hid_device *hid, const signed short *ff_bits) 126{ 127 struct tmff_device *tmff; 128 struct hid_report *report; 129 struct list_head *report_list; 130 struct hid_input *hidinput = list_entry(hid->inputs.next, 131 struct hid_input, list); 132 struct input_dev *input_dev = hidinput->input; 133 int error; 134 int i; 135 136 tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); 137 if (!tmff) 138 return -ENOMEM; 139 140 /* Find the report to use */ 141 report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 142 list_for_each_entry(report, report_list, list) { 143 int fieldnum; 144 145 for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { 146 struct hid_field *field = report->field[fieldnum]; 147 148 if (field->maxusage <= 0) 149 continue; 150 151 switch (field->usage[0].hid) { 152 case THRUSTMASTER_USAGE_FF: 153 if (field->report_count < 2) { 154 dev_warn(&hid->dev, "ignoring FF field " 155 "with report_count < 2\n"); 156 continue; 157 } 158 159 if (field->logical_maximum == 160 field->logical_minimum) { 161 dev_warn(&hid->dev, "ignoring FF field " 162 "with logical_maximum " 163 "== logical_minimum\n"); 164 continue; 165 } 166 167 if (tmff->report && tmff->report != report) { 168 dev_warn(&hid->dev, "ignoring FF field " 169 "in other report\n"); 170 continue; 171 } 172 173 if (tmff->ff_field && tmff->ff_field != field) { 174 dev_warn(&hid->dev, "ignoring " 175 "duplicate FF field\n"); 176 continue; 177 } 178 179 tmff->report = report; 180 tmff->ff_field = field; 181 182 for (i = 0; ff_bits[i] >= 0; i++) 183 set_bit(ff_bits[i], input_dev->ffbit); 184 185 break; 186 187 default: 188 dev_warn(&hid->dev, "ignoring unknown output " 189 "usage %08x\n", 190 field->usage[0].hid); 191 continue; 192 } 193 } 194 } 195 196 if (!tmff->report) { 197 dev_err(&hid->dev, "can't find FF field in output reports\n"); 198 error = -ENODEV; 199 goto fail; 200 } 201 202 error = input_ff_create_memless(input_dev, tmff, tmff_play); 203 if (error) 204 goto fail; 205 206 dev_info(&hid->dev, "force feedback for ThrustMaster devices by Zinx " 207 "Verituse <zinx@epicsol.org>"); 208 return 0; 209 210fail: 211 kfree(tmff); 212 return error; 213} 214#else 215static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits) 216{ 217 return 0; 218} 219#endif 220 221static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) 222{ 223 int ret; 224 225 ret = hid_parse(hdev); 226 if (ret) { 227 dev_err(&hdev->dev, "parse failed\n"); 228 goto err; 229 } 230 231 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 232 if (ret) { 233 dev_err(&hdev->dev, "hw start failed\n"); 234 goto err; 235 } 236 237 tmff_init(hdev, (void *)id->driver_data); 238 239 return 0; 240err: 241 return ret; 242} 243 244static const struct hid_device_id tm_devices[] = { 245 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), 246 .driver_data = (unsigned long)ff_rumble }, 247 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), /* FireStorm Dual Power 2 (and 3) */ 248 .driver_data = (unsigned long)ff_rumble }, 249 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323), /* Dual Trigger 3-in-1 (PC Mode) */ 250 .driver_data = (unsigned long)ff_rumble }, 251 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324), /* Dual Trigger 3-in-1 (PS3 Mode) */ 252 .driver_data = (unsigned long)ff_rumble }, 253 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ 254 .driver_data = (unsigned long)ff_rumble }, 255 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653), /* RGT Force Feedback CLUTCH Raging Wheel */ 256 .driver_data = (unsigned long)ff_joystick }, 257 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ 258 .driver_data = (unsigned long)ff_joystick }, 259 { } 260}; 261MODULE_DEVICE_TABLE(hid, tm_devices); 262 263static struct hid_driver tm_driver = { 264 .name = "thrustmaster", 265 .id_table = tm_devices, 266 .probe = tm_probe, 267}; 268 269static int __init tm_init(void) 270{ 271 return hid_register_driver(&tm_driver); 272} 273 274static void __exit tm_exit(void) 275{ 276 hid_unregister_driver(&tm_driver); 277} 278 279module_init(tm_init); 280module_exit(tm_exit); 281MODULE_LICENSE("GPL"); 282