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/usb.h> 33 34 #include "hid-ids.h" 35 36 static const signed short ff_rumble[] = { 37 FF_RUMBLE, 38 -1 39 }; 40 41 static const signed short ff_joystick[] = { 42 FF_CONSTANT, 43 -1 44 }; 45 46 #ifdef CONFIG_THRUSTMASTER_FF 47 #include "usbhid/usbhid.h" 48 49 /* Usages for thrustmaster devices I know about */ 50 #define THRUSTMASTER_USAGE_FF (HID_UP_GENDESK | 0xbb) 51 52 struct tmff_device { 53 struct hid_report *report; 54 struct hid_field *ff_field; 55 }; 56 57 /* Changes values from 0 to 0xffff into values from minimum to maximum */ 58 static inline int tmff_scale_u16(unsigned int in, int minimum, int maximum) 59 { 60 int ret; 61 62 ret = (in * (maximum - minimum) / 0xffff) + minimum; 63 if (ret < minimum) 64 return minimum; 65 if (ret > maximum) 66 return maximum; 67 return ret; 68 } 69 70 /* Changes values from -0x80 to 0x7f into values from minimum to maximum */ 71 static inline int tmff_scale_s8(int in, int minimum, int maximum) 72 { 73 int ret; 74 75 ret = (((in + 0x80) * (maximum - minimum)) / 0xff) + minimum; 76 if (ret < minimum) 77 return minimum; 78 if (ret > maximum) 79 return maximum; 80 return ret; 81 } 82 83 static int tmff_play(struct input_dev *dev, void *data, 84 struct ff_effect *effect) 85 { 86 struct hid_device *hid = input_get_drvdata(dev); 87 struct tmff_device *tmff = data; 88 struct hid_field *ff_field = tmff->ff_field; 89 int x, y; 90 int left, right; /* Rumbling */ 91 92 switch (effect->type) { 93 case FF_CONSTANT: 94 x = tmff_scale_s8(effect->u.ramp.start_level, 95 ff_field->logical_minimum, 96 ff_field->logical_maximum); 97 y = tmff_scale_s8(effect->u.ramp.end_level, 98 ff_field->logical_minimum, 99 ff_field->logical_maximum); 100 101 dbg_hid("(x, y)=(%04x, %04x)\n", x, y); 102 ff_field->value[0] = x; 103 ff_field->value[1] = y; 104 usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); 105 break; 106 107 case FF_RUMBLE: 108 left = tmff_scale_u16(effect->u.rumble.weak_magnitude, 109 ff_field->logical_minimum, 110 ff_field->logical_maximum); 111 right = tmff_scale_u16(effect->u.rumble.strong_magnitude, 112 ff_field->logical_minimum, 113 ff_field->logical_maximum); 114 115 dbg_hid("(left,right)=(%08x, %08x)\n", left, right); 116 ff_field->value[0] = left; 117 ff_field->value[1] = right; 118 usbhid_submit_report(hid, tmff->report, USB_DIR_OUT); 119 break; 120 } 121 return 0; 122 } 123 124 static int tmff_init(struct hid_device *hid, const signed short *ff_bits) 125 { 126 struct tmff_device *tmff; 127 struct hid_report *report; 128 struct list_head *report_list; 129 struct hid_input *hidinput = list_entry(hid->inputs.next, 130 struct hid_input, list); 131 struct input_dev *input_dev = hidinput->input; 132 int error; 133 int i; 134 135 tmff = kzalloc(sizeof(struct tmff_device), GFP_KERNEL); 136 if (!tmff) 137 return -ENOMEM; 138 139 /* Find the report to use */ 140 report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list; 141 list_for_each_entry(report, report_list, list) { 142 int fieldnum; 143 144 for (fieldnum = 0; fieldnum < report->maxfield; ++fieldnum) { 145 struct hid_field *field = report->field[fieldnum]; 146 147 if (field->maxusage <= 0) 148 continue; 149 150 switch (field->usage[0].hid) { 151 case THRUSTMASTER_USAGE_FF: 152 if (field->report_count < 2) { 153 dev_warn(&hid->dev, "ignoring FF field " 154 "with report_count < 2\n"); 155 continue; 156 } 157 158 if (field->logical_maximum == 159 field->logical_minimum) { 160 dev_warn(&hid->dev, "ignoring FF field " 161 "with logical_maximum " 162 "== logical_minimum\n"); 163 continue; 164 } 165 166 if (tmff->report && tmff->report != report) { 167 dev_warn(&hid->dev, "ignoring FF field " 168 "in other report\n"); 169 continue; 170 } 171 172 if (tmff->ff_field && tmff->ff_field != field) { 173 dev_warn(&hid->dev, "ignoring " 174 "duplicate FF field\n"); 175 continue; 176 } 177 178 tmff->report = report; 179 tmff->ff_field = field; 180 181 for (i = 0; ff_bits[i] >= 0; i++) 182 set_bit(ff_bits[i], input_dev->ffbit); 183 184 break; 185 186 default: 187 dev_warn(&hid->dev, "ignoring unknown output " 188 "usage %08x\n", 189 field->usage[0].hid); 190 continue; 191 } 192 } 193 } 194 195 if (!tmff->report) { 196 dev_err(&hid->dev, "can't find FF field in output reports\n"); 197 error = -ENODEV; 198 goto fail; 199 } 200 201 error = input_ff_create_memless(input_dev, tmff, tmff_play); 202 if (error) 203 goto fail; 204 205 dev_info(&hid->dev, "force feedback for ThrustMaster devices by Zinx " 206 "Verituse <zinx@epicsol.org>"); 207 return 0; 208 209 fail: 210 kfree(tmff); 211 return error; 212 } 213 #else 214 static inline int tmff_init(struct hid_device *hid, const signed short *ff_bits) 215 { 216 return 0; 217 } 218 #endif 219 220 static int tm_probe(struct hid_device *hdev, const struct hid_device_id *id) 221 { 222 int ret; 223 224 ret = hid_parse(hdev); 225 if (ret) { 226 dev_err(&hdev->dev, "parse failed\n"); 227 goto err; 228 } 229 230 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); 231 if (ret) { 232 dev_err(&hdev->dev, "hw start failed\n"); 233 goto err; 234 } 235 236 tmff_init(hdev, (void *)id->driver_data); 237 238 return 0; 239 err: 240 return ret; 241 } 242 243 static const struct hid_device_id tm_devices[] = { 244 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300), 245 .driver_data = (unsigned long)ff_rumble }, 246 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304), /* FireStorm Dual Power 2 (and 3) */ 247 .driver_data = (unsigned long)ff_rumble }, 248 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323), /* Dual Trigger 3-in-1 (PC Mode) */ 249 .driver_data = (unsigned long)ff_rumble }, 250 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324), /* Dual Trigger 3-in-1 (PS3 Mode) */ 251 .driver_data = (unsigned long)ff_rumble }, 252 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651), /* FGT Rumble Force Wheel */ 253 .driver_data = (unsigned long)ff_rumble }, 254 { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654), /* FGT Force Feedback Wheel */ 255 .driver_data = (unsigned long)ff_joystick }, 256 { } 257 }; 258 MODULE_DEVICE_TABLE(hid, tm_devices); 259 260 static struct hid_driver tm_driver = { 261 .name = "thrustmaster", 262 .id_table = tm_devices, 263 .probe = tm_probe, 264 }; 265 266 static int __init tm_init(void) 267 { 268 return hid_register_driver(&tm_driver); 269 } 270 271 static void __exit tm_exit(void) 272 { 273 hid_unregister_driver(&tm_driver); 274 } 275 276 module_init(tm_init); 277 module_exit(tm_exit); 278 MODULE_LICENSE("GPL"); 279