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__ 143 144 #include <asm/i8253.h> 145 146 #define GET_TIME(x) do { if (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0) 147 #define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? CLOCK_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 spin_lock_irqsave(&i8253_lock, flags); 155 outb_p(0x00, 0x43); 156 count = inb_p(0x40); 157 count |= inb_p(0x40) << 8; 158 spin_unlock_irqrestore(&i8253_lock, flags); 159 160 return count; 161 } 162 #elif defined(__x86_64__) 163 #define GET_TIME(x) rdtscl(x) 164 #define DELTA(x,y) ((y)-(x)) 165 #define TIME_NAME "TSC" 166 #elif defined(__alpha__) 167 #define GET_TIME(x) do { x = get_cycles(); } while (0) 168 #define DELTA(x,y) ((y)-(x)) 169 #define TIME_NAME "PCC" 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 /* 180 * analog_decode() decodes analog joystick data and reports input events. 181 */ 182 183 static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) 184 { 185 struct input_dev *dev = &analog->dev; 186 int i, j; 187 188 if (analog->mask & ANALOG_HAT_FCS) 189 for (i = 0; i < 4; i++) 190 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { 191 buttons |= 1 << (i + 14); 192 break; 193 } 194 195 for (i = j = 0; i < 6; i++) 196 if (analog->mask & (0x10 << i)) 197 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); 198 199 if (analog->mask & ANALOG_HBTN_CHF) 200 for (i = 0; i < 4; i++) 201 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); 202 203 if (analog->mask & ANALOG_BTN_TL) 204 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); 205 if (analog->mask & ANALOG_BTN_TR) 206 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); 207 if (analog->mask & ANALOG_BTN_TL2) 208 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); 209 if (analog->mask & ANALOG_BTN_TR2) 210 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); 211 212 for (i = j = 0; i < 4; i++) 213 if (analog->mask & (1 << i)) 214 input_report_abs(dev, analog_axes[j++], axes[i]); 215 216 for (i = j = 0; i < 3; i++) 217 if (analog->mask & analog_exts[i]) { 218 input_report_abs(dev, analog_hats[j++], 219 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); 220 input_report_abs(dev, analog_hats[j++], 221 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); 222 } 223 224 input_sync(dev); 225 } 226 227 /* 228 * analog_cooked_read() reads analog joystick data. 229 */ 230 231 static int analog_cooked_read(struct analog_port *port) 232 { 233 struct gameport *gameport = port->gameport; 234 unsigned int time[4], start, loop, now, loopout, timeout; 235 unsigned char data[4], this, last; 236 unsigned long flags; 237 int i, j; 238 239 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; 240 timeout = ANALOG_MAX_TIME * port->speed; 241 242 local_irq_save(flags); 243 gameport_trigger(gameport); 244 GET_TIME(now); 245 local_irq_restore(flags); 246 247 start = now; 248 this = port->mask; 249 i = 0; 250 251 do { 252 loop = now; 253 last = this; 254 255 local_irq_disable(); 256 this = gameport_read(gameport) & port->mask; 257 GET_TIME(now); 258 local_irq_restore(flags); 259 260 if ((last ^ this) && (DELTA(loop, now) < loopout)) { 261 data[i] = last ^ this; 262 time[i] = now; 263 i++; 264 } 265 266 } while (this && (i < 4) && (DELTA(start, now) < timeout)); 267 268 this <<= 4; 269 270 for (--i; i >= 0; i--) { 271 this |= data[i]; 272 for (j = 0; j < 4; j++) 273 if (data[i] & (1 << j)) 274 port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; 275 } 276 277 return -(this != port->mask); 278 } 279 280 static int analog_button_read(struct analog_port *port, char saitek, char chf) 281 { 282 unsigned char u; 283 int t = 1, i = 0; 284 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); 285 286 u = gameport_read(port->gameport); 287 288 if (!chf) { 289 port->buttons = (~u >> 4) & 0xf; 290 return 0; 291 } 292 293 port->buttons = 0; 294 295 while ((~u & 0xf0) && (i < 16) && t) { 296 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; 297 if (!saitek) return 0; 298 udelay(ANALOG_SAITEK_DELAY); 299 t = strobe; 300 gameport_trigger(port->gameport); 301 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; 302 i++; 303 } 304 305 return -(!t || (i == 16)); 306 } 307 308 /* 309 * analog_poll() repeatedly polls the Analog joysticks. 310 */ 311 312 static void analog_poll(struct gameport *gameport) 313 { 314 struct analog_port *port = gameport_get_drvdata(gameport); 315 int i; 316 317 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); 318 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); 319 320 if (port->cooked) { 321 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); 322 if (chf) 323 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; 324 port->reads++; 325 } else { 326 if (!port->axtime--) { 327 port->bads -= analog_cooked_read(port); 328 port->bads -= analog_button_read(port, saitek, chf); 329 port->reads++; 330 port->axtime = ANALOG_AXIS_TIME - 1; 331 } else { 332 if (!saitek) 333 analog_button_read(port, saitek, chf); 334 } 335 } 336 337 for (i = 0; i < 2; i++) 338 if (port->analog[i].mask) 339 analog_decode(port->analog + i, port->axes, port->initial, port->buttons); 340 } 341 342 /* 343 * analog_open() is a callback from the input open routine. 344 */ 345 346 static int analog_open(struct input_dev *dev) 347 { 348 struct analog_port *port = dev->private; 349 350 gameport_start_polling(port->gameport); 351 return 0; 352 } 353 354 /* 355 * analog_close() is a callback from the input close routine. 356 */ 357 358 static void analog_close(struct input_dev *dev) 359 { 360 struct analog_port *port = dev->private; 361 362 gameport_stop_polling(port->gameport); 363 } 364 365 /* 366 * analog_calibrate_timer() calibrates the timer and computes loop 367 * and timeout values for a joystick port. 368 */ 369 370 static void analog_calibrate_timer(struct analog_port *port) 371 { 372 struct gameport *gameport = port->gameport; 373 unsigned int i, t, tx, t1, t2, t3; 374 unsigned long flags; 375 376 local_irq_save(flags); 377 GET_TIME(t1); 378 #ifdef FAKE_TIME 379 analog_faketime += 830; 380 #endif 381 mdelay(1); 382 GET_TIME(t2); 383 GET_TIME(t3); 384 local_irq_restore(flags); 385 386 port->speed = DELTA(t1, t2) - DELTA(t2, t3); 387 388 tx = ~0; 389 390 for (i = 0; i < 50; i++) { 391 local_irq_save(flags); 392 GET_TIME(t1); 393 for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); } 394 GET_TIME(t3); 395 local_irq_restore(flags); 396 udelay(i); 397 t = DELTA(t1, t2) - DELTA(t2, t3); 398 if (t < tx) tx = t; 399 } 400 401 port->loop = tx / 50; 402 } 403 404 /* 405 * analog_name() constructs a name for an analog joystick. 406 */ 407 408 static void analog_name(struct analog *analog) 409 { 410 sprintf(analog->name, "Analog %d-axis %d-button", 411 hweight8(analog->mask & ANALOG_AXES_STD), 412 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + 413 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); 414 415 if (analog->mask & ANALOG_HATS_ALL) 416 sprintf(analog->name, "%s %d-hat", 417 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); 418 419 if (analog->mask & ANALOG_HAT_FCS) 420 strcat(analog->name, " FCS"); 421 if (analog->mask & ANALOG_ANY_CHF) 422 strcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF"); 423 424 strcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick"); 425 } 426 427 /* 428 * analog_init_device() 429 */ 430 431 static void analog_init_device(struct analog_port *port, struct analog *analog, int index) 432 { 433 int i, j, t, v, w, x, y, z; 434 435 analog_name(analog); 436 sprintf(analog->phys, "%s/input%d", port->gameport->phys, index); 437 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; 438 439 init_input_dev(&analog->dev); 440 441 analog->dev.name = analog->name; 442 analog->dev.phys = analog->phys; 443 analog->dev.id.bustype = BUS_GAMEPORT; 444 analog->dev.id.vendor = GAMEPORT_ID_VENDOR_ANALOG; 445 analog->dev.id.product = analog->mask >> 4; 446 analog->dev.id.version = 0x0100; 447 448 analog->dev.open = analog_open; 449 analog->dev.close = analog_close; 450 analog->dev.private = port; 451 analog->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS); 452 453 for (i = j = 0; i < 4; i++) 454 if (analog->mask & (1 << i)) { 455 456 t = analog_axes[j]; 457 x = port->axes[i]; 458 y = (port->axes[0] + port->axes[1]) >> 1; 459 z = y - port->axes[i]; 460 z = z > 0 ? z : -z; 461 v = (x >> 3); 462 w = (x >> 3); 463 464 set_bit(t, analog->dev.absbit); 465 466 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) 467 x = y; 468 469 if (analog->mask & ANALOG_SAITEK) { 470 if (i == 2) x = port->axes[i]; 471 v = x - (x >> 2); 472 w = (x >> 4); 473 } 474 475 analog->dev.absmax[t] = (x << 1) - v; 476 analog->dev.absmin[t] = v; 477 analog->dev.absfuzz[t] = port->fuzz; 478 analog->dev.absflat[t] = w; 479 480 j++; 481 } 482 483 for (i = j = 0; i < 3; i++) 484 if (analog->mask & analog_exts[i]) 485 for (x = 0; x < 2; x++) { 486 t = analog_hats[j++]; 487 set_bit(t, analog->dev.absbit); 488 analog->dev.absmax[t] = 1; 489 analog->dev.absmin[t] = -1; 490 } 491 492 for (i = j = 0; i < 4; i++) 493 if (analog->mask & (0x10 << i)) 494 set_bit(analog->buttons[j++], analog->dev.keybit); 495 496 if (analog->mask & ANALOG_BTNS_CHF) 497 for (i = 0; i < 2; i++) 498 set_bit(analog->buttons[j++], analog->dev.keybit); 499 500 if (analog->mask & ANALOG_HBTN_CHF) 501 for (i = 0; i < 4; i++) 502 set_bit(analog->buttons[j++], analog->dev.keybit); 503 504 for (i = 0; i < 4; i++) 505 if (analog->mask & (ANALOG_BTN_TL << i)) 506 set_bit(analog_pads[i], analog->dev.keybit); 507 508 analog_decode(analog, port->axes, port->initial, port->buttons); 509 510 input_register_device(&analog->dev); 511 512 printk(KERN_INFO "input: %s at %s", analog->name, port->gameport->phys); 513 514 if (port->cooked) 515 printk(" [ADC port]\n"); 516 else 517 printk(" [%s timer, %d %sHz clock, %d ns res]\n", TIME_NAME, 518 port->speed > 10000 ? (port->speed + 800) / 1000 : port->speed, 519 port->speed > 10000 ? "M" : "k", 520 port->speed > 10000 ? (port->loop * 1000) / (port->speed / 1000) 521 : (port->loop * 1000000) / port->speed); 522 } 523 524 /* 525 * analog_init_devices() sets up device-specific values and registers the input devices. 526 */ 527 528 static int analog_init_masks(struct analog_port *port) 529 { 530 int i; 531 struct analog *analog = port->analog; 532 int max[4]; 533 534 if (!port->mask) 535 return -1; 536 537 if ((port->mask & 3) != 3 && port->mask != 0xc) { 538 printk(KERN_WARNING "analog.c: Unknown joystick device found " 539 "(data=%#x, %s), probably not analog joystick.\n", 540 port->mask, port->gameport->phys); 541 return -1; 542 } 543 544 545 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ 546 547 analog[0].mask = i & 0xfffff; 548 549 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) 550 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) 551 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); 552 553 analog[0].mask &= ~(ANALOG_HAT2_CHF) 554 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); 555 556 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) 557 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) 558 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) 559 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); 560 561 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) 562 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) 563 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); 564 565 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); 566 567 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD 568 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); 569 570 if (port->cooked) { 571 572 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; 573 574 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; 575 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; 576 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; 577 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; 578 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; 579 580 gameport_calibrate(port->gameport, port->axes, max); 581 } 582 583 for (i = 0; i < 4; i++) 584 port->initial[i] = port->axes[i]; 585 586 return -!(analog[0].mask || analog[1].mask); 587 } 588 589 static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) 590 { 591 int i, t, u, v; 592 593 port->gameport = gameport; 594 595 gameport_set_drvdata(gameport, port); 596 597 if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { 598 599 analog_calibrate_timer(port); 600 601 gameport_trigger(gameport); 602 t = gameport_read(gameport); 603 msleep(ANALOG_MAX_TIME); 604 port->mask = (gameport_read(gameport) ^ t) & t & 0xf; 605 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; 606 607 for (i = 0; i < ANALOG_INIT_RETRIES; i++) { 608 if (!analog_cooked_read(port)) 609 break; 610 msleep(ANALOG_MAX_TIME); 611 } 612 613 u = v = 0; 614 615 msleep(ANALOG_MAX_TIME); 616 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); 617 gameport_trigger(gameport); 618 while ((gameport_read(port->gameport) & port->mask) && (u < t)) 619 u++; 620 udelay(ANALOG_SAITEK_DELAY); 621 t = gameport_time(gameport, ANALOG_SAITEK_TIME); 622 gameport_trigger(gameport); 623 while ((gameport_read(port->gameport) & port->mask) && (v < t)) 624 v++; 625 626 if (v < (u >> 1)) { /* FIXME - more than one port */ 627 analog_options[0] |= /* FIXME - more than one port */ 628 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; 629 return 0; 630 } 631 632 gameport_close(gameport); 633 } 634 635 if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { 636 637 for (i = 0; i < ANALOG_INIT_RETRIES; i++) 638 if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) 639 break; 640 for (i = 0; i < 4; i++) 641 if (port->axes[i] != -1) 642 port->mask |= 1 << i; 643 644 port->fuzz = gameport->fuzz; 645 port->cooked = 1; 646 return 0; 647 } 648 649 return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 650 } 651 652 static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) 653 { 654 struct analog_port *port; 655 int i; 656 int err; 657 658 if (!(port = kcalloc(1, sizeof(struct analog_port), GFP_KERNEL))) 659 return - ENOMEM; 660 661 err = analog_init_port(gameport, drv, port); 662 if (err) { 663 kfree(port); 664 return err; 665 } 666 667 err = analog_init_masks(port); 668 if (err) { 669 gameport_close(gameport); 670 gameport_set_drvdata(gameport, NULL); 671 kfree(port); 672 return err; 673 } 674 675 gameport_set_poll_handler(gameport, analog_poll); 676 gameport_set_poll_interval(gameport, 10); 677 678 for (i = 0; i < 2; i++) 679 if (port->analog[i].mask) 680 analog_init_device(port, port->analog + i, i); 681 682 return 0; 683 } 684 685 static void analog_disconnect(struct gameport *gameport) 686 { 687 int i; 688 struct analog_port *port = gameport_get_drvdata(gameport); 689 690 for (i = 0; i < 2; i++) 691 if (port->analog[i].mask) 692 input_unregister_device(&port->analog[i].dev); 693 gameport_close(gameport); 694 gameport_set_drvdata(gameport, NULL); 695 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", 696 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, 697 port->gameport->phys); 698 kfree(port); 699 } 700 701 struct analog_types { 702 char *name; 703 int value; 704 }; 705 706 static struct analog_types analog_types[] = { 707 { "none", 0x00000000 }, 708 { "auto", 0x000000ff }, 709 { "2btn", 0x0000003f }, 710 { "y-joy", 0x0cc00033 }, 711 { "y-pad", 0x8cc80033 }, 712 { "fcs", 0x000008f7 }, 713 { "chf", 0x000002ff }, 714 { "fullchf", 0x000007ff }, 715 { "gamepad", 0x000830f3 }, 716 { "gamepad8", 0x0008f0f3 }, 717 { NULL, 0 } 718 }; 719 720 static void analog_parse_options(void) 721 { 722 int i, j; 723 char *end; 724 725 for (i = 0; i < js_nargs; i++) { 726 727 for (j = 0; analog_types[j].name; j++) 728 if (!strcmp(analog_types[j].name, js[i])) { 729 analog_options[i] = analog_types[j].value; 730 break; 731 } 732 if (analog_types[j].name) continue; 733 734 analog_options[i] = simple_strtoul(js[i], &end, 0); 735 if (end != js[i]) continue; 736 737 analog_options[i] = 0xff; 738 if (!strlen(js[i])) continue; 739 740 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); 741 } 742 743 for (; i < ANALOG_PORTS; i++) 744 analog_options[i] = 0xff; 745 } 746 747 /* 748 * The gameport device structure. 749 */ 750 751 static struct gameport_driver analog_drv = { 752 .driver = { 753 .name = "analog", 754 }, 755 .description = DRIVER_DESC, 756 .connect = analog_connect, 757 .disconnect = analog_disconnect, 758 }; 759 760 static int __init analog_init(void) 761 { 762 analog_parse_options(); 763 gameport_register_driver(&analog_drv); 764 765 return 0; 766 } 767 768 static void __exit analog_exit(void) 769 { 770 gameport_unregister_driver(&analog_drv); 771 } 772 773 module_init(analog_init); 774 module_exit(analog_exit); 775