1 /* 2 * $Id: analog.c,v 1.68 2002/01/22 20:18:32 vojtech Exp $ 3 * 4 * Copyright (c) 1996-2001 Vojtech Pavlik 5 */ 6 7 /* 8 * Analog joystick and gamepad driver for Linux 9 */ 10 11 /* 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 * Should you need to contact me, the author, you can do so either by 27 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: 28 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 29 */ 30 31 #include <linux/config.h> 32 #include <linux/delay.h> 33 #include <linux/kernel.h> 34 #include <linux/module.h> 35 #include <linux/moduleparam.h> 36 #include <linux/slab.h> 37 #include <linux/bitops.h> 38 #include <linux/init.h> 39 #include <linux/input.h> 40 #include <linux/gameport.h> 41 #include <asm/timex.h> 42 43 #define DRIVER_DESC "Analog joystick and gamepad driver" 44 45 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 46 MODULE_DESCRIPTION(DRIVER_DESC); 47 MODULE_LICENSE("GPL"); 48 49 /* 50 * Option parsing. 51 */ 52 53 #define ANALOG_PORTS 16 54 55 static char *js[ANALOG_PORTS]; 56 static int js_nargs; 57 static int analog_options[ANALOG_PORTS]; 58 module_param_array_named(map, js, charp, &js_nargs, 0); 59 MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); 60 61 __obsolete_setup("js="); 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 #define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0) 144 #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? CLOCK_TICK_RATE / HZ : 0))) 145 #define TIME_NAME (cpu_has_tsc?"TSC":"PIT") 146 static unsigned int get_time_pit(void) 147 { 148 extern spinlock_t i8253_lock; 149 unsigned long flags; 150 unsigned int count; 151 152 spin_lock_irqsave(&i8253_lock, flags); 153 outb_p(0x00, 0x43); 154 count = inb_p(0x40); 155 count |= inb_p(0x40) << 8; 156 spin_unlock_irqrestore(&i8253_lock, flags); 157 158 return count; 159 } 160 #elif defined(__x86_64__) 161 #define GET_TIME(x) rdtscl(x) 162 #define DELTA(x,y) ((y)-(x)) 163 #define TIME_NAME "TSC" 164 #elif defined(__alpha__) 165 #define GET_TIME(x) do { x = get_cycles(); } while (0) 166 #define DELTA(x,y) ((y)-(x)) 167 #define TIME_NAME "PCC" 168 #else 169 #define FAKE_TIME 170 static unsigned long analog_faketime = 0; 171 #define GET_TIME(x) do { x = analog_faketime++; } while(0) 172 #define DELTA(x,y) ((y)-(x)) 173 #define TIME_NAME "Unreliable" 174 #warning Precise timer not defined for this architecture. 175 #endif 176 177 /* 178 * analog_decode() decodes analog joystick data and reports input events. 179 */ 180 181 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) 182 { 183 struct input_dev *dev = &analog->dev; 184 int i, j; 185 186 if (analog->mask & ANALOG_HAT_FCS) 187 for (i = 0; i < 4; i++) 188 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { 189 buttons |= 1 << (i + 14); 190 break; 191 } 192 193 for (i = j = 0; i < 6; i++) 194 if (analog->mask & (0x10 << i)) 195 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); 196 197 if (analog->mask & ANALOG_HBTN_CHF) 198 for (i = 0; i < 4; i++) 199 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); 200 201 if (analog->mask & ANALOG_BTN_TL) 202 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); 203 if (analog->mask & ANALOG_BTN_TR) 204 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); 205 if (analog->mask & ANALOG_BTN_TL2) 206 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); 207 if (analog->mask & ANALOG_BTN_TR2) 208 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); 209 210 for (i = j = 0; i < 4; i++) 211 if (analog->mask & (1 << i)) 212 input_report_abs(dev, analog_axes[j++], axes[i]); 213 214 for (i = j = 0; i < 3; i++) 215 if (analog->mask & analog_exts[i]) { 216 input_report_abs(dev, analog_hats[j++], 217 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); 218 input_report_abs(dev, analog_hats[j++], 219 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); 220 } 221 222 input_sync(dev); 223 } 224 225 /* 226 * analog_cooked_read() reads analog joystick data. 227 */ 228 229 static int analog_cooked_read(struct analog_port *port) 230 { 231 struct gameport *gameport = port->gameport; 232 unsigned int time[4], start, loop, now, loopout, timeout; 233 unsigned char data[4], this, last; 234 unsigned long flags; 235 int i, j; 236 237 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; 238 timeout = ANALOG_MAX_TIME * port->speed; 239 240 local_irq_save(flags); 241 gameport_trigger(gameport); 242 GET_TIME(now); 243 local_irq_restore(flags); 244 245 start = now; 246 this = port->mask; 247 i = 0; 248 249 do { 250 loop = now; 251 last = this; 252 253 local_irq_disable(); 254 this = gameport_read(gameport) & port->mask; 255 GET_TIME(now); 256 local_irq_restore(flags); 257 258 if ((last ^ this) && (DELTA(loop, now) < loopout)) { 259 data[i] = last ^ this; 260 time[i] = now; 261 i++; 262 } 263 264 } while (this && (i < 4) && (DELTA(start, now) < timeout)); 265 266 this <<= 4; 267 268 for (--i; i >= 0; i--) { 269 this |= data[i]; 270 for (j = 0; j < 4; j++) 271 if (data[i] & (1 << j)) 272 port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; 273 } 274 275 return -(this != port->mask); 276 } 277 278 static int analog_button_read(struct analog_port *port, char saitek, char chf) 279 { 280 unsigned char u; 281 int t = 1, i = 0; 282 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); 283 284 u = gameport_read(port->gameport); 285 286 if (!chf) { 287 port->buttons = (~u >> 4) & 0xf; 288 return 0; 289 } 290 291 port->buttons = 0; 292 293 while ((~u & 0xf0) && (i < 16) && t) { 294 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; 295 if (!saitek) return 0; 296 udelay(ANALOG_SAITEK_DELAY); 297 t = strobe; 298 gameport_trigger(port->gameport); 299 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; 300 i++; 301 } 302 303 return -(!t || (i == 16)); 304 } 305 306 /* 307 * analog_poll() repeatedly polls the Analog joysticks. 308 */ 309 310 static void analog_poll(struct gameport *gameport) 311 { 312 struct analog_port *port = gameport_get_drvdata(gameport); 313 int i; 314 315 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); 316 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); 317 318 if (port->cooked) { 319 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); 320 if (chf) 321 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; 322 port->reads++; 323 } else { 324 if (!port->axtime--) { 325 port->bads -= analog_cooked_read(port); 326 port->bads -= analog_button_read(port, saitek, chf); 327 port->reads++; 328 port->axtime = ANALOG_AXIS_TIME - 1; 329 } else { 330 if (!saitek) 331 analog_button_read(port, saitek, chf); 332 } 333 } 334 335 for (i = 0; i < 2; i++) 336 if (port->analog[i].mask) 337 analog_decode(port->analog + i, port->axes, port->initial, port->buttons); 338 } 339 340 /* 341 * analog_open() is a callback from the input open routine. 342 */ 343 344 static int analog_open(struct input_dev *dev) 345 { 346 struct analog_port *port = dev->private; 347 348 gameport_start_polling(port->gameport); 349 return 0; 350 } 351 352 /* 353 * analog_close() is a callback from the input close routine. 354 */ 355 356 static void analog_close(struct input_dev *dev) 357 { 358 struct analog_port *port = dev->private; 359 360 gameport_stop_polling(port->gameport); 361 } 362 363 /* 364 * analog_calibrate_timer() calibrates the timer and computes loop 365 * and timeout values for a joystick port. 366 */ 367 368 static void analog_calibrate_timer(struct analog_port *port) 369 { 370 struct gameport *gameport = port->gameport; 371 unsigned int i, t, tx, t1, t2, t3; 372 unsigned long flags; 373 374 local_irq_save(flags); 375 GET_TIME(t1); 376 #ifdef FAKE_TIME 377 analog_faketime += 830; 378 #endif 379 mdelay(1); 380 GET_TIME(t2); 381 GET_TIME(t3); 382 local_irq_restore(flags); 383 384 port->speed = DELTA(t1, t2) - DELTA(t2, t3); 385 386 tx = ~0; 387 388 for (i = 0; i < 50; i++) { 389 local_irq_save(flags); 390 GET_TIME(t1); 391 for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); } 392 GET_TIME(t3); 393 local_irq_restore(flags); 394 udelay(i); 395 t = DELTA(t1, t2) - DELTA(t2, t3); 396 if (t < tx) tx = t; 397 } 398 399 port->loop = tx / 50; 400 } 401 402 /* 403 * analog_name() constructs a name for an analog joystick. 404 */ 405 406 static void analog_name(struct analog *analog) 407 { 408 sprintf(analog->name, "Analog %d-axis %d-button", 409 hweight8(analog->mask & ANALOG_AXES_STD), 410 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + 411 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); 412 413 if (analog->mask & ANALOG_HATS_ALL) 414 sprintf(analog->name, "%s %d-hat", 415 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); 416 417 if (analog->mask & ANALOG_HAT_FCS) 418 strcat(analog->name, " FCS"); 419 if (analog->mask & ANALOG_ANY_CHF) 420 strcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF"); 421 422 strcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick"); 423 } 424 425 /* 426 * analog_init_device() 427 */ 428 429 static void analog_init_device(struct analog_port *port, struct analog *analog, int index) 430 { 431 int i, j, t, v, w, x, y, z; 432 433 analog_name(analog); 434 sprintf(analog->phys, "%s/input%d", port->gameport->phys, index); 435 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; 436 437 init_input_dev(&analog->dev); 438 439 analog->dev.name = analog->name; 440 analog->dev.phys = analog->phys; 441 analog->dev.id.bustype = BUS_GAMEPORT; 442 analog->dev.id.vendor = GAMEPORT_ID_VENDOR_ANALOG; 443 analog->dev.id.product = analog->mask >> 4; 444 analog->dev.id.version = 0x0100; 445 446 analog->dev.open = analog_open; 447 analog->dev.close = analog_close; 448 analog->dev.private = port; 449 analog->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 450 451 for (i = j = 0; i < 4; i++) 452 if (analog->mask & (1 << i)) { 453 454 t = analog_axes[j]; 455 x = port->axes[i]; 456 y = (port->axes[0] + port->axes[1]) >> 1; 457 z = y - port->axes[i]; 458 z = z > 0 ? z : -z; 459 v = (x >> 3); 460 w = (x >> 3); 461 462 set_bit(t, analog->dev.absbit); 463 464 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) 465 x = y; 466 467 if (analog->mask & ANALOG_SAITEK) { 468 if (i == 2) x = port->axes[i]; 469 v = x - (x >> 2); 470 w = (x >> 4); 471 } 472 473 analog->dev.absmax[t] = (x << 1) - v; 474 analog->dev.absmin[t] = v; 475 analog->dev.absfuzz[t] = port->fuzz; 476 analog->dev.absflat[t] = w; 477 478 j++; 479 } 480 481 for (i = j = 0; i < 3; i++) 482 if (analog->mask & analog_exts[i]) 483 for (x = 0; x < 2; x++) { 484 t = analog_hats[j++]; 485 set_bit(t, analog->dev.absbit); 486 analog->dev.absmax[t] = 1; 487 analog->dev.absmin[t] = -1; 488 } 489 490 for (i = j = 0; i < 4; i++) 491 if (analog->mask & (0x10 << i)) 492 set_bit(analog->buttons[j++], analog->dev.keybit); 493 494 if (analog->mask & ANALOG_BTNS_CHF) 495 for (i = 0; i < 2; i++) 496 set_bit(analog->buttons[j++], analog->dev.keybit); 497 498 if (analog->mask & ANALOG_HBTN_CHF) 499 for (i = 0; i < 4; i++) 500 set_bit(analog->buttons[j++], analog->dev.keybit); 501 502 for (i = 0; i < 4; i++) 503 if (analog->mask & (ANALOG_BTN_TL << i)) 504 set_bit(analog_pads[i], analog->dev.keybit); 505 506 analog_decode(analog, port->axes, port->initial, port->buttons); 507 508 input_register_device(&analog->dev); 509 510 printk(KERN_INFO "input: %s at %s", analog->name, port->gameport->phys); 511 512 if (port->cooked) 513 printk(" [ADC port]\n"); 514 else 515 printk(" [%s timer, %d %sHz clock, %d ns res]\n", TIME_NAME, 516 port->speed > 10000 ? (port->speed + 800) / 1000 : port->speed, 517 port->speed > 10000 ? "M" : "k", 518 port->speed > 10000 ? (port->loop * 1000) / (port->speed / 1000) 519 : (port->loop * 1000000) / port->speed); 520 } 521 522 /* 523 * analog_init_devices() sets up device-specific values and registers the input devices. 524 */ 525 526 static int analog_init_masks(struct analog_port *port) 527 { 528 int i; 529 struct analog *analog = port->analog; 530 int max[4]; 531 532 if (!port->mask) 533 return -1; 534 535 if ((port->mask & 3) != 3 && port->mask != 0xc) { 536 printk(KERN_WARNING "analog.c: Unknown joystick device found " 537 "(data=%#x, %s), probably not analog joystick.\n", 538 port->mask, port->gameport->phys); 539 return -1; 540 } 541 542 543 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ 544 545 analog[0].mask = i & 0xfffff; 546 547 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) 548 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) 549 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); 550 551 analog[0].mask &= ~(ANALOG_HAT2_CHF) 552 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); 553 554 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) 555 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) 556 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) 557 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); 558 559 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) 560 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) 561 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); 562 563 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); 564 565 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD 566 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); 567 568 if (port->cooked) { 569 570 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; 571 572 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; 573 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; 574 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; 575 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; 576 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; 577 578 gameport_calibrate(port->gameport, port->axes, max); 579 } 580 581 for (i = 0; i < 4; i++) 582 port->initial[i] = port->axes[i]; 583 584 return -!(analog[0].mask || analog[1].mask); 585 } 586 587 static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) 588 { 589 int i, t, u, v; 590 591 port->gameport = gameport; 592 593 gameport_set_drvdata(gameport, port); 594 595 if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { 596 597 analog_calibrate_timer(port); 598 599 gameport_trigger(gameport); 600 t = gameport_read(gameport); 601 msleep(ANALOG_MAX_TIME); 602 port->mask = (gameport_read(gameport) ^ t) & t & 0xf; 603 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; 604 605 for (i = 0; i < ANALOG_INIT_RETRIES; i++) { 606 if (!analog_cooked_read(port)) 607 break; 608 msleep(ANALOG_MAX_TIME); 609 } 610 611 u = v = 0; 612 613 msleep(ANALOG_MAX_TIME); 614 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); 615 gameport_trigger(gameport); 616 while ((gameport_read(port->gameport) & port->mask) && (u < t)) 617 u++; 618 udelay(ANALOG_SAITEK_DELAY); 619 t = gameport_time(gameport, ANALOG_SAITEK_TIME); 620 gameport_trigger(gameport); 621 while ((gameport_read(port->gameport) & port->mask) && (v < t)) 622 v++; 623 624 if (v < (u >> 1)) { /* FIXME - more than one port */ 625 analog_options[0] |= /* FIXME - more than one port */ 626 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; 627 return 0; 628 } 629 630 gameport_close(gameport); 631 } 632 633 if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { 634 635 for (i = 0; i < ANALOG_INIT_RETRIES; i++) 636 if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) 637 break; 638 for (i = 0; i < 4; i++) 639 if (port->axes[i] != -1) 640 port->mask |= 1 << i; 641 642 port->fuzz = gameport->fuzz; 643 port->cooked = 1; 644 return 0; 645 } 646 647 return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 648 } 649 650 static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) 651 { 652 struct analog_port *port; 653 int i; 654 int err; 655 656 if (!(port = kcalloc(1, sizeof(struct analog_port), GFP_KERNEL))) 657 return - ENOMEM; 658 659 err = analog_init_port(gameport, drv, port); 660 if (err) { 661 kfree(port); 662 return err; 663 } 664 665 err = analog_init_masks(port); 666 if (err) { 667 gameport_close(gameport); 668 gameport_set_drvdata(gameport, NULL); 669 kfree(port); 670 return err; 671 } 672 673 gameport_set_poll_handler(gameport, analog_poll); 674 gameport_set_poll_interval(gameport, 10); 675 676 for (i = 0; i < 2; i++) 677 if (port->analog[i].mask) 678 analog_init_device(port, port->analog + i, i); 679 680 return 0; 681 } 682 683 static void analog_disconnect(struct gameport *gameport) 684 { 685 int i; 686 struct analog_port *port = gameport_get_drvdata(gameport); 687 688 for (i = 0; i < 2; i++) 689 if (port->analog[i].mask) 690 input_unregister_device(&port->analog[i].dev); 691 gameport_close(gameport); 692 gameport_set_drvdata(gameport, NULL); 693 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", 694 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, 695 port->gameport->phys); 696 kfree(port); 697 } 698 699 struct analog_types { 700 char *name; 701 int value; 702 }; 703 704 static struct analog_types analog_types[] = { 705 { "none", 0x00000000 }, 706 { "auto", 0x000000ff }, 707 { "2btn", 0x0000003f }, 708 { "y-joy", 0x0cc00033 }, 709 { "y-pad", 0x8cc80033 }, 710 { "fcs", 0x000008f7 }, 711 { "chf", 0x000002ff }, 712 { "fullchf", 0x000007ff }, 713 { "gamepad", 0x000830f3 }, 714 { "gamepad8", 0x0008f0f3 }, 715 { NULL, 0 } 716 }; 717 718 static void analog_parse_options(void) 719 { 720 int i, j; 721 char *end; 722 723 for (i = 0; i < js_nargs; i++) { 724 725 for (j = 0; analog_types[j].name; j++) 726 if (!strcmp(analog_types[j].name, js[i])) { 727 analog_options[i] = analog_types[j].value; 728 break; 729 } 730 if (analog_types[j].name) continue; 731 732 analog_options[i] = simple_strtoul(js[i], &end, 0); 733 if (end != js[i]) continue; 734 735 analog_options[i] = 0xff; 736 if (!strlen(js[i])) continue; 737 738 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); 739 } 740 741 for (; i < ANALOG_PORTS; i++) 742 analog_options[i] = 0xff; 743 } 744 745 /* 746 * The gameport device structure. 747 */ 748 749 static struct gameport_driver analog_drv = { 750 .driver = { 751 .name = "analog", 752 }, 753 .description = DRIVER_DESC, 754 .connect = analog_connect, 755 .disconnect = analog_disconnect, 756 }; 757 758 static int __init analog_init(void) 759 { 760 analog_parse_options(); 761 gameport_register_driver(&analog_drv); 762 763 return 0; 764 } 765 766 static void __exit analog_exit(void) 767 { 768 gameport_unregister_driver(&analog_drv); 769 } 770 771 module_init(analog_init); 772 module_exit(analog_exit); 773