1 /* 2 * Copyright (c) 1996-2001 Vojtech Pavlik 3 */ 4 5 /* 6 * Analog joystick and gamepad driver for Linux 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 * Should you need to contact me, the author, you can do so either by 25 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 26 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 27 */ 28 29 #include <linux/delay.h> 30 #include <linux/kernel.h> 31 #include <linux/module.h> 32 #include <linux/slab.h> 33 #include <linux/bitops.h> 34 #include <linux/init.h> 35 #include <linux/input.h> 36 #include <linux/gameport.h> 37 #include <linux/jiffies.h> 38 #include <linux/timex.h> 39 #include <linux/timekeeping.h> 40 41 #define DRIVER_DESC "Analog joystick and gamepad driver" 42 43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 44 MODULE_DESCRIPTION(DRIVER_DESC); 45 MODULE_LICENSE("GPL"); 46 47 static bool use_ktime = true; 48 module_param(use_ktime, bool, 0400); 49 MODULE_PARM_DESC(use_ktime, "Use ktime for measuring I/O speed"); 50 51 /* 52 * Option parsing. 53 */ 54 55 #define ANALOG_PORTS 16 56 57 static char *js[ANALOG_PORTS]; 58 static unsigned int js_nargs; 59 static int analog_options[ANALOG_PORTS]; 60 module_param_array_named(map, js, charp, &js_nargs, 0); 61 MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); 62 63 /* 64 * Times, feature definitions. 65 */ 66 67 #define ANALOG_RUDDER 0x00004 68 #define ANALOG_THROTTLE 0x00008 69 #define ANALOG_AXES_STD 0x0000f 70 #define ANALOG_BTNS_STD 0x000f0 71 72 #define ANALOG_BTNS_CHF 0x00100 73 #define ANALOG_HAT1_CHF 0x00200 74 #define ANALOG_HAT2_CHF 0x00400 75 #define ANALOG_HAT_FCS 0x00800 76 #define ANALOG_HATS_ALL 0x00e00 77 #define ANALOG_BTN_TL 0x01000 78 #define ANALOG_BTN_TR 0x02000 79 #define ANALOG_BTN_TL2 0x04000 80 #define ANALOG_BTN_TR2 0x08000 81 #define ANALOG_BTNS_TLR 0x03000 82 #define ANALOG_BTNS_TLR2 0x0c000 83 #define ANALOG_BTNS_GAMEPAD 0x0f000 84 85 #define ANALOG_HBTN_CHF 0x10000 86 #define ANALOG_ANY_CHF 0x10700 87 #define ANALOG_SAITEK 0x20000 88 #define ANALOG_EXTENSIONS 0x7ff00 89 #define ANALOG_GAMEPAD 0x80000 90 91 #define ANALOG_MAX_TIME 3 /* 3 ms */ 92 #define ANALOG_LOOP_TIME 2000 /* 2 * loop */ 93 #define ANALOG_SAITEK_DELAY 200 /* 200 us */ 94 #define ANALOG_SAITEK_TIME 2000 /* 2000 us */ 95 #define ANALOG_AXIS_TIME 2 /* 2 * refresh */ 96 #define ANALOG_INIT_RETRIES 8 /* 8 times */ 97 #define ANALOG_FUZZ_BITS 2 /* 2 bit more */ 98 #define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */ 99 100 #define ANALOG_MAX_NAME_LENGTH 128 101 #define ANALOG_MAX_PHYS_LENGTH 32 102 103 static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; 104 static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; 105 static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; 106 static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; 107 static short analog_pad_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_TL2, BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_BASE }; 108 static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, 109 BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 }; 110 111 static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; 112 113 struct analog { 114 struct input_dev *dev; 115 int mask; 116 short *buttons; 117 char name[ANALOG_MAX_NAME_LENGTH]; 118 char phys[ANALOG_MAX_PHYS_LENGTH]; 119 }; 120 121 struct analog_port { 122 struct gameport *gameport; 123 struct analog analog[2]; 124 unsigned char mask; 125 char saitek; 126 char cooked; 127 int bads; 128 int reads; 129 int speed; 130 int loop; 131 int fuzz; 132 int axes[4]; 133 int buttons; 134 int initial[4]; 135 int axtime; 136 }; 137 138 /* 139 * Time macros. 140 */ 141 142 #ifdef __i386__ 143 144 #include <linux/i8253.h> 145 146 #define GET_TIME(x) do { if (cpu_has_tsc) x = (unsigned int)rdtsc(); else x = get_time_pit(); } while (0) 147 #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0))) 148 #define TIME_NAME (cpu_has_tsc?"TSC":"PIT") 149 static unsigned int get_time_pit(void) 150 { 151 unsigned long flags; 152 unsigned int count; 153 154 raw_spin_lock_irqsave(&i8253_lock, flags); 155 outb_p(0x00, 0x43); 156 count = inb_p(0x40); 157 count |= inb_p(0x40) << 8; 158 raw_spin_unlock_irqrestore(&i8253_lock, flags); 159 160 return count; 161 } 162 #elif defined(__x86_64__) 163 #define GET_TIME(x) do { x = (unsigned int)rdtsc(); } while (0) 164 #define DELTA(x,y) ((y)-(x)) 165 #define TIME_NAME "TSC" 166 #elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_TILE) 167 #define GET_TIME(x) do { x = get_cycles(); } while (0) 168 #define DELTA(x,y) ((y)-(x)) 169 #define TIME_NAME "get_cycles" 170 #else 171 #define FAKE_TIME 172 static unsigned long analog_faketime = 0; 173 #define GET_TIME(x) do { x = analog_faketime++; } while(0) 174 #define DELTA(x,y) ((y)-(x)) 175 #define TIME_NAME "Unreliable" 176 #warning Precise timer not defined for this architecture. 177 #endif 178 179 static inline u64 get_time(void) 180 { 181 if (use_ktime) { 182 return ktime_get_ns(); 183 } else { 184 unsigned int x; 185 GET_TIME(x); 186 return x; 187 } 188 } 189 190 static inline unsigned int delta(u64 x, u64 y) 191 { 192 if (use_ktime) 193 return y - x; 194 else 195 return DELTA((unsigned int)x, (unsigned int)y); 196 } 197 198 /* 199 * analog_decode() decodes analog joystick data and reports input events. 200 */ 201 202 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) 203 { 204 struct input_dev *dev = analog->dev; 205 int i, j; 206 207 if (analog->mask & ANALOG_HAT_FCS) 208 for (i = 0; i < 4; i++) 209 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { 210 buttons |= 1 << (i + 14); 211 break; 212 } 213 214 for (i = j = 0; i < 6; i++) 215 if (analog->mask & (0x10 << i)) 216 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); 217 218 if (analog->mask & ANALOG_HBTN_CHF) 219 for (i = 0; i < 4; i++) 220 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); 221 222 if (analog->mask & ANALOG_BTN_TL) 223 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); 224 if (analog->mask & ANALOG_BTN_TR) 225 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); 226 if (analog->mask & ANALOG_BTN_TL2) 227 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); 228 if (analog->mask & ANALOG_BTN_TR2) 229 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); 230 231 for (i = j = 0; i < 4; i++) 232 if (analog->mask & (1 << i)) 233 input_report_abs(dev, analog_axes[j++], axes[i]); 234 235 for (i = j = 0; i < 3; i++) 236 if (analog->mask & analog_exts[i]) { 237 input_report_abs(dev, analog_hats[j++], 238 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); 239 input_report_abs(dev, analog_hats[j++], 240 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); 241 } 242 243 input_sync(dev); 244 } 245 246 /* 247 * analog_cooked_read() reads analog joystick data. 248 */ 249 250 static int analog_cooked_read(struct analog_port *port) 251 { 252 struct gameport *gameport = port->gameport; 253 u64 time[4], start, loop, now; 254 unsigned int loopout, timeout; 255 unsigned char data[4], this, last; 256 unsigned long flags; 257 int i, j; 258 259 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; 260 timeout = ANALOG_MAX_TIME * port->speed; 261 262 local_irq_save(flags); 263 gameport_trigger(gameport); 264 now = get_time(); 265 local_irq_restore(flags); 266 267 start = now; 268 this = port->mask; 269 i = 0; 270 271 do { 272 loop = now; 273 last = this; 274 275 local_irq_disable(); 276 this = gameport_read(gameport) & port->mask; 277 now = get_time(); 278 local_irq_restore(flags); 279 280 if ((last ^ this) && (delta(loop, now) < loopout)) { 281 data[i] = last ^ this; 282 time[i] = now; 283 i++; 284 } 285 286 } while (this && (i < 4) && (delta(start, now) < timeout)); 287 288 this <<= 4; 289 290 for (--i; i >= 0; i--) { 291 this |= data[i]; 292 for (j = 0; j < 4; j++) 293 if (data[i] & (1 << j)) 294 port->axes[j] = (delta(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; 295 } 296 297 return -(this != port->mask); 298 } 299 300 static int analog_button_read(struct analog_port *port, char saitek, char chf) 301 { 302 unsigned char u; 303 int t = 1, i = 0; 304 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); 305 306 u = gameport_read(port->gameport); 307 308 if (!chf) { 309 port->buttons = (~u >> 4) & 0xf; 310 return 0; 311 } 312 313 port->buttons = 0; 314 315 while ((~u & 0xf0) && (i < 16) && t) { 316 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; 317 if (!saitek) return 0; 318 udelay(ANALOG_SAITEK_DELAY); 319 t = strobe; 320 gameport_trigger(port->gameport); 321 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; 322 i++; 323 } 324 325 return -(!t || (i == 16)); 326 } 327 328 /* 329 * analog_poll() repeatedly polls the Analog joysticks. 330 */ 331 332 static void analog_poll(struct gameport *gameport) 333 { 334 struct analog_port *port = gameport_get_drvdata(gameport); 335 int i; 336 337 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); 338 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); 339 340 if (port->cooked) { 341 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); 342 if (chf) 343 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; 344 port->reads++; 345 } else { 346 if (!port->axtime--) { 347 port->bads -= analog_cooked_read(port); 348 port->bads -= analog_button_read(port, saitek, chf); 349 port->reads++; 350 port->axtime = ANALOG_AXIS_TIME - 1; 351 } else { 352 if (!saitek) 353 analog_button_read(port, saitek, chf); 354 } 355 } 356 357 for (i = 0; i < 2; i++) 358 if (port->analog[i].mask) 359 analog_decode(port->analog + i, port->axes, port->initial, port->buttons); 360 } 361 362 /* 363 * analog_open() is a callback from the input open routine. 364 */ 365 366 static int analog_open(struct input_dev *dev) 367 { 368 struct analog_port *port = input_get_drvdata(dev); 369 370 gameport_start_polling(port->gameport); 371 return 0; 372 } 373 374 /* 375 * analog_close() is a callback from the input close routine. 376 */ 377 378 static void analog_close(struct input_dev *dev) 379 { 380 struct analog_port *port = input_get_drvdata(dev); 381 382 gameport_stop_polling(port->gameport); 383 } 384 385 /* 386 * analog_calibrate_timer() calibrates the timer and computes loop 387 * and timeout values for a joystick port. 388 */ 389 390 static void analog_calibrate_timer(struct analog_port *port) 391 { 392 struct gameport *gameport = port->gameport; 393 unsigned int i, t, tx; 394 u64 t1, t2, t3; 395 unsigned long flags; 396 397 if (use_ktime) { 398 port->speed = 1000000; 399 } else { 400 local_irq_save(flags); 401 t1 = get_time(); 402 #ifdef FAKE_TIME 403 analog_faketime += 830; 404 #endif 405 mdelay(1); 406 t2 = get_time(); 407 t3 = get_time(); 408 local_irq_restore(flags); 409 410 port->speed = delta(t1, t2) - delta(t2, t3); 411 } 412 413 tx = ~0; 414 415 for (i = 0; i < 50; i++) { 416 local_irq_save(flags); 417 t1 = get_time(); 418 for (t = 0; t < 50; t++) { 419 gameport_read(gameport); 420 t2 = get_time(); 421 } 422 t3 = get_time(); 423 local_irq_restore(flags); 424 udelay(i); 425 t = delta(t1, t2) - delta(t2, t3); 426 if (t < tx) tx = t; 427 } 428 429 port->loop = tx / 50; 430 } 431 432 /* 433 * analog_name() constructs a name for an analog joystick. 434 */ 435 436 static void analog_name(struct analog *analog) 437 { 438 snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", 439 hweight8(analog->mask & ANALOG_AXES_STD), 440 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + 441 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); 442 443 if (analog->mask & ANALOG_HATS_ALL) 444 snprintf(analog->name, sizeof(analog->name), "%s %d-hat", 445 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); 446 447 if (analog->mask & ANALOG_HAT_FCS) 448 strlcat(analog->name, " FCS", sizeof(analog->name)); 449 if (analog->mask & ANALOG_ANY_CHF) 450 strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", 451 sizeof(analog->name)); 452 453 strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", 454 sizeof(analog->name)); 455 } 456 457 /* 458 * analog_init_device() 459 */ 460 461 static int analog_init_device(struct analog_port *port, struct analog *analog, int index) 462 { 463 struct input_dev *input_dev; 464 int i, j, t, v, w, x, y, z; 465 int error; 466 467 analog_name(analog); 468 snprintf(analog->phys, sizeof(analog->phys), 469 "%s/input%d", port->gameport->phys, index); 470 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; 471 472 analog->dev = input_dev = input_allocate_device(); 473 if (!input_dev) 474 return -ENOMEM; 475 476 input_dev->name = analog->name; 477 input_dev->phys = analog->phys; 478 input_dev->id.bustype = BUS_GAMEPORT; 479 input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; 480 input_dev->id.product = analog->mask >> 4; 481 input_dev->id.version = 0x0100; 482 input_dev->dev.parent = &port->gameport->dev; 483 484 input_set_drvdata(input_dev, port); 485 486 input_dev->open = analog_open; 487 input_dev->close = analog_close; 488 489 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 490 491 for (i = j = 0; i < 4; i++) 492 if (analog->mask & (1 << i)) { 493 494 t = analog_axes[j]; 495 x = port->axes[i]; 496 y = (port->axes[0] + port->axes[1]) >> 1; 497 z = y - port->axes[i]; 498 z = z > 0 ? z : -z; 499 v = (x >> 3); 500 w = (x >> 3); 501 502 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) 503 x = y; 504 505 if (analog->mask & ANALOG_SAITEK) { 506 if (i == 2) x = port->axes[i]; 507 v = x - (x >> 2); 508 w = (x >> 4); 509 } 510 511 input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); 512 j++; 513 } 514 515 for (i = j = 0; i < 3; i++) 516 if (analog->mask & analog_exts[i]) 517 for (x = 0; x < 2; x++) { 518 t = analog_hats[j++]; 519 input_set_abs_params(input_dev, t, -1, 1, 0, 0); 520 } 521 522 for (i = j = 0; i < 4; i++) 523 if (analog->mask & (0x10 << i)) 524 set_bit(analog->buttons[j++], input_dev->keybit); 525 526 if (analog->mask & ANALOG_BTNS_CHF) 527 for (i = 0; i < 2; i++) 528 set_bit(analog->buttons[j++], input_dev->keybit); 529 530 if (analog->mask & ANALOG_HBTN_CHF) 531 for (i = 0; i < 4; i++) 532 set_bit(analog->buttons[j++], input_dev->keybit); 533 534 for (i = 0; i < 4; i++) 535 if (analog->mask & (ANALOG_BTN_TL << i)) 536 set_bit(analog_pads[i], input_dev->keybit); 537 538 analog_decode(analog, port->axes, port->initial, port->buttons); 539 540 error = input_register_device(analog->dev); 541 if (error) { 542 input_free_device(analog->dev); 543 return error; 544 } 545 546 return 0; 547 } 548 549 /* 550 * analog_init_devices() sets up device-specific values and registers the input devices. 551 */ 552 553 static int analog_init_masks(struct analog_port *port) 554 { 555 int i; 556 struct analog *analog = port->analog; 557 int max[4]; 558 559 if (!port->mask) 560 return -1; 561 562 if ((port->mask & 3) != 3 && port->mask != 0xc) { 563 printk(KERN_WARNING "analog.c: Unknown joystick device found " 564 "(data=%#x, %s), probably not analog joystick.\n", 565 port->mask, port->gameport->phys); 566 return -1; 567 } 568 569 570 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ 571 572 analog[0].mask = i & 0xfffff; 573 574 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) 575 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) 576 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); 577 578 analog[0].mask &= ~(ANALOG_HAT2_CHF) 579 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); 580 581 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) 582 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) 583 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) 584 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); 585 586 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) 587 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) 588 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); 589 590 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); 591 592 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD 593 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); 594 595 if (port->cooked) { 596 597 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; 598 599 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; 600 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; 601 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; 602 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; 603 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; 604 605 gameport_calibrate(port->gameport, port->axes, max); 606 } 607 608 for (i = 0; i < 4; i++) 609 port->initial[i] = port->axes[i]; 610 611 return -!(analog[0].mask || analog[1].mask); 612 } 613 614 static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) 615 { 616 int i, t, u, v; 617 618 port->gameport = gameport; 619 620 gameport_set_drvdata(gameport, port); 621 622 if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { 623 624 analog_calibrate_timer(port); 625 626 gameport_trigger(gameport); 627 t = gameport_read(gameport); 628 msleep(ANALOG_MAX_TIME); 629 port->mask = (gameport_read(gameport) ^ t) & t & 0xf; 630 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; 631 632 for (i = 0; i < ANALOG_INIT_RETRIES; i++) { 633 if (!analog_cooked_read(port)) 634 break; 635 msleep(ANALOG_MAX_TIME); 636 } 637 638 u = v = 0; 639 640 msleep(ANALOG_MAX_TIME); 641 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); 642 gameport_trigger(gameport); 643 while ((gameport_read(port->gameport) & port->mask) && (u < t)) 644 u++; 645 udelay(ANALOG_SAITEK_DELAY); 646 t = gameport_time(gameport, ANALOG_SAITEK_TIME); 647 gameport_trigger(gameport); 648 while ((gameport_read(port->gameport) & port->mask) && (v < t)) 649 v++; 650 651 if (v < (u >> 1)) { /* FIXME - more than one port */ 652 analog_options[0] |= /* FIXME - more than one port */ 653 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; 654 return 0; 655 } 656 657 gameport_close(gameport); 658 } 659 660 if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { 661 662 for (i = 0; i < ANALOG_INIT_RETRIES; i++) 663 if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) 664 break; 665 for (i = 0; i < 4; i++) 666 if (port->axes[i] != -1) 667 port->mask |= 1 << i; 668 669 port->fuzz = gameport->fuzz; 670 port->cooked = 1; 671 return 0; 672 } 673 674 return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 675 } 676 677 static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) 678 { 679 struct analog_port *port; 680 int i; 681 int err; 682 683 if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) 684 return - ENOMEM; 685 686 err = analog_init_port(gameport, drv, port); 687 if (err) 688 goto fail1; 689 690 err = analog_init_masks(port); 691 if (err) 692 goto fail2; 693 694 gameport_set_poll_handler(gameport, analog_poll); 695 gameport_set_poll_interval(gameport, 10); 696 697 for (i = 0; i < 2; i++) 698 if (port->analog[i].mask) { 699 err = analog_init_device(port, port->analog + i, i); 700 if (err) 701 goto fail3; 702 } 703 704 return 0; 705 706 fail3: while (--i >= 0) 707 if (port->analog[i].mask) 708 input_unregister_device(port->analog[i].dev); 709 fail2: gameport_close(gameport); 710 fail1: gameport_set_drvdata(gameport, NULL); 711 kfree(port); 712 return err; 713 } 714 715 static void analog_disconnect(struct gameport *gameport) 716 { 717 struct analog_port *port = gameport_get_drvdata(gameport); 718 int i; 719 720 for (i = 0; i < 2; i++) 721 if (port->analog[i].mask) 722 input_unregister_device(port->analog[i].dev); 723 gameport_close(gameport); 724 gameport_set_drvdata(gameport, NULL); 725 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", 726 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, 727 port->gameport->phys); 728 kfree(port); 729 } 730 731 struct analog_types { 732 char *name; 733 int value; 734 }; 735 736 static struct analog_types analog_types[] = { 737 { "none", 0x00000000 }, 738 { "auto", 0x000000ff }, 739 { "2btn", 0x0000003f }, 740 { "y-joy", 0x0cc00033 }, 741 { "y-pad", 0x8cc80033 }, 742 { "fcs", 0x000008f7 }, 743 { "chf", 0x000002ff }, 744 { "fullchf", 0x000007ff }, 745 { "gamepad", 0x000830f3 }, 746 { "gamepad8", 0x0008f0f3 }, 747 { NULL, 0 } 748 }; 749 750 static void analog_parse_options(void) 751 { 752 int i, j; 753 char *end; 754 755 for (i = 0; i < js_nargs; i++) { 756 757 for (j = 0; analog_types[j].name; j++) 758 if (!strcmp(analog_types[j].name, js[i])) { 759 analog_options[i] = analog_types[j].value; 760 break; 761 } 762 if (analog_types[j].name) continue; 763 764 analog_options[i] = simple_strtoul(js[i], &end, 0); 765 if (end != js[i]) continue; 766 767 analog_options[i] = 0xff; 768 if (!strlen(js[i])) continue; 769 770 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); 771 } 772 773 for (; i < ANALOG_PORTS; i++) 774 analog_options[i] = 0xff; 775 } 776 777 /* 778 * The gameport device structure. 779 */ 780 781 static struct gameport_driver analog_drv = { 782 .driver = { 783 .name = "analog", 784 }, 785 .description = DRIVER_DESC, 786 .connect = analog_connect, 787 .disconnect = analog_disconnect, 788 }; 789 790 static int __init analog_init(void) 791 { 792 analog_parse_options(); 793 return gameport_register_driver(&analog_drv); 794 } 795 796 static void __exit analog_exit(void) 797 { 798 gameport_unregister_driver(&analog_drv); 799 } 800 801 module_init(analog_init); 802 module_exit(analog_exit); 803