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