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