1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 1998-2001 Vojtech Pavlik 4 * 5 * Based on the work of: 6 * Trystan Larey-Williams 7 */ 8 9 /* 10 * ThrustMaster DirectConnect (BSP) joystick family driver for Linux 11 */ 12 13 #include <linux/delay.h> 14 #include <linux/kernel.h> 15 #include <linux/slab.h> 16 #include <linux/module.h> 17 #include <linux/gameport.h> 18 #include <linux/input.h> 19 #include <linux/jiffies.h> 20 21 #define DRIVER_DESC "ThrustMaster DirectConnect joystick driver" 22 23 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 24 MODULE_DESCRIPTION(DRIVER_DESC); 25 MODULE_LICENSE("GPL"); 26 27 #define TMDC_MAX_START 600 /* 600 us */ 28 #define TMDC_MAX_STROBE 60 /* 60 us */ 29 #define TMDC_MAX_LENGTH 13 30 31 #define TMDC_MODE_M3DI 1 32 #define TMDC_MODE_3DRP 3 33 #define TMDC_MODE_AT 4 34 #define TMDC_MODE_FM 8 35 #define TMDC_MODE_FGP 163 36 37 #define TMDC_BYTE_ID 10 38 #define TMDC_BYTE_REV 11 39 #define TMDC_BYTE_DEF 12 40 41 #define TMDC_ABS 7 42 #define TMDC_ABS_HAT 4 43 #define TMDC_BTN 16 44 45 static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 }; 46 static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 }; 47 48 static const signed char tmdc_abs[TMDC_ABS] = 49 { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ }; 50 static const signed char tmdc_abs_hat[TMDC_ABS_HAT] = 51 { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y }; 52 static const signed char tmdc_abs_at[TMDC_ABS] = 53 { ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE }; 54 static const signed char tmdc_abs_fm[TMDC_ABS] = 55 { ABS_RX, ABS_RY, ABS_X, ABS_Y }; 56 57 static const short tmdc_btn_pad[TMDC_BTN] = 58 { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR }; 59 static const short tmdc_btn_joy[TMDC_BTN] = 60 { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE, 61 BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z }; 62 static const short tmdc_btn_fm[TMDC_BTN] = 63 { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 }; 64 static const short tmdc_btn_at[TMDC_BTN] = 65 { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4, 66 BTN_BASE3, BTN_BASE2, BTN_BASE }; 67 68 static const struct { 69 int x; 70 int y; 71 } tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}}; 72 73 static const struct tmdc_model { 74 unsigned char id; 75 const char *name; 76 char abs; 77 char hats; 78 char btnc[4]; 79 char btno[4]; 80 const signed char *axes; 81 const short *buttons; 82 } tmdc_models[] = { 83 { 1, "ThrustMaster Millennium 3D Inceptor", 6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy }, 84 { 3, "ThrustMaster Rage 3D Gamepad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad }, 85 { 4, "ThrustMaster Attack Throttle", 5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at }, 86 { 8, "ThrustMaster FragMaster", 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm }, 87 { 163, "Thrustmaster Fusion GamePad", 2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad }, 88 { 0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy } 89 }; 90 91 92 struct tmdc_port { 93 struct input_dev *dev; 94 char name[64]; 95 char phys[32]; 96 int mode; 97 const signed char *abs; 98 const short *btn; 99 unsigned char absc; 100 unsigned char btnc[4]; 101 unsigned char btno[4]; 102 }; 103 104 struct tmdc { 105 struct gameport *gameport; 106 struct tmdc_port *port[2]; 107 #if 0 108 struct input_dev *dev[2]; 109 char name[2][64]; 110 char phys[2][32]; 111 int mode[2]; 112 signed char *abs[2]; 113 short *btn[2]; 114 unsigned char absc[2]; 115 unsigned char btnc[2][4]; 116 unsigned char btno[2][4]; 117 #endif 118 int reads; 119 int bads; 120 unsigned char exists; 121 }; 122 123 /* 124 * tmdc_read_packet() reads a ThrustMaster packet. 125 */ 126 tmdc_read_packet(struct gameport * gameport,unsigned char data[2][TMDC_MAX_LENGTH])127 static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH]) 128 { 129 unsigned char u, v, w, x; 130 unsigned long flags; 131 int i[2], j[2], t[2], p, k; 132 133 p = gameport_time(gameport, TMDC_MAX_STROBE); 134 135 for (k = 0; k < 2; k++) { 136 t[k] = gameport_time(gameport, TMDC_MAX_START); 137 i[k] = j[k] = 0; 138 } 139 140 local_irq_save(flags); 141 gameport_trigger(gameport); 142 143 w = gameport_read(gameport) >> 4; 144 145 do { 146 x = w; 147 w = gameport_read(gameport) >> 4; 148 149 for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) { 150 if (~v & u & 2) { 151 if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue; 152 t[k] = p; 153 if (j[k] == 0) { /* Start bit */ 154 if (~v & 1) t[k] = 0; 155 data[k][i[k]] = 0; j[k]++; continue; 156 } 157 if (j[k] == 9) { /* Stop bit */ 158 if (v & 1) t[k] = 0; 159 j[k] = 0; i[k]++; continue; 160 } 161 data[k][i[k]] |= (~v & 1) << (j[k]++ - 1); /* Data bit */ 162 } 163 t[k]--; 164 } 165 } while (t[0] > 0 || t[1] > 0); 166 167 local_irq_restore(flags); 168 169 return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1); 170 } 171 tmdc_parse_packet(struct tmdc_port * port,unsigned char * data)172 static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data) 173 { 174 int i, k, l; 175 176 if (data[TMDC_BYTE_ID] != port->mode) 177 return -1; 178 179 for (i = 0; i < port->absc; i++) { 180 if (port->abs[i] < 0) 181 return 0; 182 183 input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]); 184 } 185 186 switch (port->mode) { 187 188 case TMDC_MODE_M3DI: 189 190 i = tmdc_byte_d[0]; 191 input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1)); 192 input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i] & 1)); 193 break; 194 195 case TMDC_MODE_AT: 196 197 i = tmdc_byte_a[3]; 198 input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x); 199 input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y); 200 break; 201 202 } 203 204 for (k = l = 0; k < 4; k++) { 205 for (i = 0; i < port->btnc[k]; i++) 206 input_report_key(port->dev, port->btn[i + l], 207 ((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1)); 208 l += port->btnc[k]; 209 } 210 211 input_sync(port->dev); 212 213 return 0; 214 } 215 216 /* 217 * tmdc_poll() reads and analyzes ThrustMaster joystick data. 218 */ 219 tmdc_poll(struct gameport * gameport)220 static void tmdc_poll(struct gameport *gameport) 221 { 222 unsigned char data[2][TMDC_MAX_LENGTH]; 223 struct tmdc *tmdc = gameport_get_drvdata(gameport); 224 unsigned char r, bad = 0; 225 int i; 226 227 tmdc->reads++; 228 229 if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists) 230 bad = 1; 231 else { 232 for (i = 0; i < 2; i++) { 233 if (r & (1 << i) & tmdc->exists) { 234 235 if (tmdc_parse_packet(tmdc->port[i], data[i])) 236 bad = 1; 237 } 238 } 239 } 240 241 tmdc->bads += bad; 242 } 243 tmdc_open(struct input_dev * dev)244 static int tmdc_open(struct input_dev *dev) 245 { 246 struct tmdc *tmdc = input_get_drvdata(dev); 247 248 gameport_start_polling(tmdc->gameport); 249 return 0; 250 } 251 tmdc_close(struct input_dev * dev)252 static void tmdc_close(struct input_dev *dev) 253 { 254 struct tmdc *tmdc = input_get_drvdata(dev); 255 256 gameport_stop_polling(tmdc->gameport); 257 } 258 tmdc_setup_port(struct tmdc * tmdc,int idx,unsigned char * data)259 static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data) 260 { 261 const struct tmdc_model *model; 262 struct tmdc_port *port; 263 struct input_dev *input_dev; 264 int i, j, b = 0; 265 int err; 266 267 tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL); 268 input_dev = input_allocate_device(); 269 if (!port || !input_dev) { 270 err = -ENOMEM; 271 goto fail; 272 } 273 274 port->mode = data[TMDC_BYTE_ID]; 275 276 for (model = tmdc_models; model->id && model->id != port->mode; model++) 277 /* empty */; 278 279 port->abs = model->axes; 280 port->btn = model->buttons; 281 282 if (!model->id) { 283 port->absc = data[TMDC_BYTE_DEF] >> 4; 284 for (i = 0; i < 4; i++) 285 port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0; 286 } else { 287 port->absc = model->abs; 288 for (i = 0; i < 4; i++) 289 port->btnc[i] = model->btnc[i]; 290 } 291 292 for (i = 0; i < 4; i++) 293 port->btno[i] = model->btno[i]; 294 295 snprintf(port->name, sizeof(port->name), model->name, 296 port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode); 297 snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i); 298 299 port->dev = input_dev; 300 301 input_dev->name = port->name; 302 input_dev->phys = port->phys; 303 input_dev->id.bustype = BUS_GAMEPORT; 304 input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER; 305 input_dev->id.product = model->id; 306 input_dev->id.version = 0x0100; 307 input_dev->dev.parent = &tmdc->gameport->dev; 308 309 input_set_drvdata(input_dev, tmdc); 310 311 input_dev->open = tmdc_open; 312 input_dev->close = tmdc_close; 313 314 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 315 316 for (i = 0; i < port->absc && i < TMDC_ABS; i++) 317 if (port->abs[i] >= 0) 318 input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4); 319 320 for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++) 321 input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0); 322 323 for (i = 0; i < 4; i++) { 324 for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++) 325 set_bit(port->btn[j + b], input_dev->keybit); 326 b += port->btnc[i]; 327 } 328 329 err = input_register_device(port->dev); 330 if (err) 331 goto fail; 332 333 return 0; 334 335 fail: input_free_device(input_dev); 336 kfree(port); 337 return err; 338 } 339 340 /* 341 * tmdc_probe() probes for ThrustMaster type joysticks. 342 */ 343 tmdc_connect(struct gameport * gameport,struct gameport_driver * drv)344 static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv) 345 { 346 unsigned char data[2][TMDC_MAX_LENGTH]; 347 struct tmdc *tmdc; 348 int i; 349 int err; 350 351 if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL))) 352 return -ENOMEM; 353 354 tmdc->gameport = gameport; 355 356 gameport_set_drvdata(gameport, tmdc); 357 358 err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 359 if (err) 360 goto fail1; 361 362 if (!(tmdc->exists = tmdc_read_packet(gameport, data))) { 363 err = -ENODEV; 364 goto fail2; 365 } 366 367 gameport_set_poll_handler(gameport, tmdc_poll); 368 gameport_set_poll_interval(gameport, 20); 369 370 for (i = 0; i < 2; i++) { 371 if (tmdc->exists & (1 << i)) { 372 373 err = tmdc_setup_port(tmdc, i, data[i]); 374 if (err) 375 goto fail3; 376 } 377 } 378 379 return 0; 380 381 fail3: while (--i >= 0) { 382 if (tmdc->port[i]) { 383 input_unregister_device(tmdc->port[i]->dev); 384 kfree(tmdc->port[i]); 385 } 386 } 387 fail2: gameport_close(gameport); 388 fail1: gameport_set_drvdata(gameport, NULL); 389 kfree(tmdc); 390 return err; 391 } 392 tmdc_disconnect(struct gameport * gameport)393 static void tmdc_disconnect(struct gameport *gameport) 394 { 395 struct tmdc *tmdc = gameport_get_drvdata(gameport); 396 int i; 397 398 for (i = 0; i < 2; i++) { 399 if (tmdc->port[i]) { 400 input_unregister_device(tmdc->port[i]->dev); 401 kfree(tmdc->port[i]); 402 } 403 } 404 gameport_close(gameport); 405 gameport_set_drvdata(gameport, NULL); 406 kfree(tmdc); 407 } 408 409 static struct gameport_driver tmdc_drv = { 410 .driver = { 411 .name = "tmdc", 412 .owner = THIS_MODULE, 413 }, 414 .description = DRIVER_DESC, 415 .connect = tmdc_connect, 416 .disconnect = tmdc_disconnect, 417 }; 418 419 module_gameport_driver(tmdc_drv); 420