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 42MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); 43MODULE_DESCRIPTION(DRIVER_DESC); 44MODULE_LICENSE("GPL"); 45 46/* 47 * Option parsing. 48 */ 49 50#define ANALOG_PORTS 16 51 52static char *js[ANALOG_PORTS]; 53static unsigned int js_nargs; 54static int analog_options[ANALOG_PORTS]; 55module_param_array_named(map, js, charp, &js_nargs, 0); 56MODULE_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 98static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; 99static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; 100static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; 101static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; 102static short analog_pad_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_TL2, BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_BASE }; 103static 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 106static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; 107 108struct 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 116struct 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") 144static 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__) 162#define GET_TIME(x) do { x = get_cycles(); } while (0) 163#define DELTA(x,y) ((y)-(x)) 164#define TIME_NAME "PCC" 165#elif defined(CONFIG_MN10300) 166#define GET_TIME(x) do { x = get_cycles(); } while (0) 167#define DELTA(x, y) ((x) - (y)) 168#define TIME_NAME "TSC" 169#else 170#define FAKE_TIME 171static unsigned long analog_faketime = 0; 172#define GET_TIME(x) do { x = analog_faketime++; } while(0) 173#define DELTA(x,y) ((y)-(x)) 174#define TIME_NAME "Unreliable" 175#warning Precise timer not defined for this architecture. 176#endif 177 178/* 179 * analog_decode() decodes analog joystick data and reports input events. 180 */ 181 182static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) 183{ 184 struct input_dev *dev = analog->dev; 185 int i, j; 186 187 if (analog->mask & ANALOG_HAT_FCS) 188 for (i = 0; i < 4; i++) 189 if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { 190 buttons |= 1 << (i + 14); 191 break; 192 } 193 194 for (i = j = 0; i < 6; i++) 195 if (analog->mask & (0x10 << i)) 196 input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); 197 198 if (analog->mask & ANALOG_HBTN_CHF) 199 for (i = 0; i < 4; i++) 200 input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); 201 202 if (analog->mask & ANALOG_BTN_TL) 203 input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); 204 if (analog->mask & ANALOG_BTN_TR) 205 input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); 206 if (analog->mask & ANALOG_BTN_TL2) 207 input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); 208 if (analog->mask & ANALOG_BTN_TR2) 209 input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); 210 211 for (i = j = 0; i < 4; i++) 212 if (analog->mask & (1 << i)) 213 input_report_abs(dev, analog_axes[j++], axes[i]); 214 215 for (i = j = 0; i < 3; i++) 216 if (analog->mask & analog_exts[i]) { 217 input_report_abs(dev, analog_hats[j++], 218 ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); 219 input_report_abs(dev, analog_hats[j++], 220 ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); 221 } 222 223 input_sync(dev); 224} 225 226/* 227 * analog_cooked_read() reads analog joystick data. 228 */ 229 230static int analog_cooked_read(struct analog_port *port) 231{ 232 struct gameport *gameport = port->gameport; 233 unsigned int time[4], start, loop, now, loopout, timeout; 234 unsigned char data[4], this, last; 235 unsigned long flags; 236 int i, j; 237 238 loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; 239 timeout = ANALOG_MAX_TIME * port->speed; 240 241 local_irq_save(flags); 242 gameport_trigger(gameport); 243 GET_TIME(now); 244 local_irq_restore(flags); 245 246 start = now; 247 this = port->mask; 248 i = 0; 249 250 do { 251 loop = now; 252 last = this; 253 254 local_irq_disable(); 255 this = gameport_read(gameport) & port->mask; 256 GET_TIME(now); 257 local_irq_restore(flags); 258 259 if ((last ^ this) && (DELTA(loop, now) < loopout)) { 260 data[i] = last ^ this; 261 time[i] = now; 262 i++; 263 } 264 265 } while (this && (i < 4) && (DELTA(start, now) < timeout)); 266 267 this <<= 4; 268 269 for (--i; i >= 0; i--) { 270 this |= data[i]; 271 for (j = 0; j < 4; j++) 272 if (data[i] & (1 << j)) 273 port->axes[j] = (DELTA(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; 274 } 275 276 return -(this != port->mask); 277} 278 279static int analog_button_read(struct analog_port *port, char saitek, char chf) 280{ 281 unsigned char u; 282 int t = 1, i = 0; 283 int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); 284 285 u = gameport_read(port->gameport); 286 287 if (!chf) { 288 port->buttons = (~u >> 4) & 0xf; 289 return 0; 290 } 291 292 port->buttons = 0; 293 294 while ((~u & 0xf0) && (i < 16) && t) { 295 port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; 296 if (!saitek) return 0; 297 udelay(ANALOG_SAITEK_DELAY); 298 t = strobe; 299 gameport_trigger(port->gameport); 300 while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; 301 i++; 302 } 303 304 return -(!t || (i == 16)); 305} 306 307/* 308 * analog_poll() repeatedly polls the Analog joysticks. 309 */ 310 311static void analog_poll(struct gameport *gameport) 312{ 313 struct analog_port *port = gameport_get_drvdata(gameport); 314 int i; 315 316 char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); 317 char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); 318 319 if (port->cooked) { 320 port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); 321 if (chf) 322 port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; 323 port->reads++; 324 } else { 325 if (!port->axtime--) { 326 port->bads -= analog_cooked_read(port); 327 port->bads -= analog_button_read(port, saitek, chf); 328 port->reads++; 329 port->axtime = ANALOG_AXIS_TIME - 1; 330 } else { 331 if (!saitek) 332 analog_button_read(port, saitek, chf); 333 } 334 } 335 336 for (i = 0; i < 2; i++) 337 if (port->analog[i].mask) 338 analog_decode(port->analog + i, port->axes, port->initial, port->buttons); 339} 340 341/* 342 * analog_open() is a callback from the input open routine. 343 */ 344 345static int analog_open(struct input_dev *dev) 346{ 347 struct analog_port *port = input_get_drvdata(dev); 348 349 gameport_start_polling(port->gameport); 350 return 0; 351} 352 353/* 354 * analog_close() is a callback from the input close routine. 355 */ 356 357static void analog_close(struct input_dev *dev) 358{ 359 struct analog_port *port = input_get_drvdata(dev); 360 361 gameport_stop_polling(port->gameport); 362} 363 364/* 365 * analog_calibrate_timer() calibrates the timer and computes loop 366 * and timeout values for a joystick port. 367 */ 368 369static void analog_calibrate_timer(struct analog_port *port) 370{ 371 struct gameport *gameport = port->gameport; 372 unsigned int i, t, tx, t1, t2, t3; 373 unsigned long flags; 374 375 local_irq_save(flags); 376 GET_TIME(t1); 377#ifdef FAKE_TIME 378 analog_faketime += 830; 379#endif 380 mdelay(1); 381 GET_TIME(t2); 382 GET_TIME(t3); 383 local_irq_restore(flags); 384 385 port->speed = DELTA(t1, t2) - DELTA(t2, t3); 386 387 tx = ~0; 388 389 for (i = 0; i < 50; i++) { 390 local_irq_save(flags); 391 GET_TIME(t1); 392 for (t = 0; t < 50; t++) { gameport_read(gameport); GET_TIME(t2); } 393 GET_TIME(t3); 394 local_irq_restore(flags); 395 udelay(i); 396 t = DELTA(t1, t2) - DELTA(t2, t3); 397 if (t < tx) tx = t; 398 } 399 400 port->loop = tx / 50; 401} 402 403/* 404 * analog_name() constructs a name for an analog joystick. 405 */ 406 407static void analog_name(struct analog *analog) 408{ 409 snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", 410 hweight8(analog->mask & ANALOG_AXES_STD), 411 hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + 412 hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); 413 414 if (analog->mask & ANALOG_HATS_ALL) 415 snprintf(analog->name, sizeof(analog->name), "%s %d-hat", 416 analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); 417 418 if (analog->mask & ANALOG_HAT_FCS) 419 strlcat(analog->name, " FCS", sizeof(analog->name)); 420 if (analog->mask & ANALOG_ANY_CHF) 421 strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", 422 sizeof(analog->name)); 423 424 strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", 425 sizeof(analog->name)); 426} 427 428/* 429 * analog_init_device() 430 */ 431 432static 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 int error; 437 438 analog_name(analog); 439 snprintf(analog->phys, sizeof(analog->phys), 440 "%s/input%d", port->gameport->phys, index); 441 analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; 442 443 analog->dev = input_dev = input_allocate_device(); 444 if (!input_dev) 445 return -ENOMEM; 446 447 input_dev->name = analog->name; 448 input_dev->phys = analog->phys; 449 input_dev->id.bustype = BUS_GAMEPORT; 450 input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; 451 input_dev->id.product = analog->mask >> 4; 452 input_dev->id.version = 0x0100; 453 input_dev->dev.parent = &port->gameport->dev; 454 455 input_set_drvdata(input_dev, port); 456 457 input_dev->open = analog_open; 458 input_dev->close = analog_close; 459 460 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); 461 462 for (i = j = 0; i < 4; i++) 463 if (analog->mask & (1 << i)) { 464 465 t = analog_axes[j]; 466 x = port->axes[i]; 467 y = (port->axes[0] + port->axes[1]) >> 1; 468 z = y - port->axes[i]; 469 z = z > 0 ? z : -z; 470 v = (x >> 3); 471 w = (x >> 3); 472 473 if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) 474 x = y; 475 476 if (analog->mask & ANALOG_SAITEK) { 477 if (i == 2) x = port->axes[i]; 478 v = x - (x >> 2); 479 w = (x >> 4); 480 } 481 482 input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); 483 j++; 484 } 485 486 for (i = j = 0; i < 3; i++) 487 if (analog->mask & analog_exts[i]) 488 for (x = 0; x < 2; x++) { 489 t = analog_hats[j++]; 490 input_set_abs_params(input_dev, t, -1, 1, 0, 0); 491 } 492 493 for (i = j = 0; i < 4; i++) 494 if (analog->mask & (0x10 << i)) 495 set_bit(analog->buttons[j++], input_dev->keybit); 496 497 if (analog->mask & ANALOG_BTNS_CHF) 498 for (i = 0; i < 2; i++) 499 set_bit(analog->buttons[j++], input_dev->keybit); 500 501 if (analog->mask & ANALOG_HBTN_CHF) 502 for (i = 0; i < 4; i++) 503 set_bit(analog->buttons[j++], input_dev->keybit); 504 505 for (i = 0; i < 4; i++) 506 if (analog->mask & (ANALOG_BTN_TL << i)) 507 set_bit(analog_pads[i], input_dev->keybit); 508 509 analog_decode(analog, port->axes, port->initial, port->buttons); 510 511 error = input_register_device(analog->dev); 512 if (error) { 513 input_free_device(analog->dev); 514 return error; 515 } 516 517 return 0; 518} 519 520/* 521 * analog_init_devices() sets up device-specific values and registers the input devices. 522 */ 523 524static int analog_init_masks(struct analog_port *port) 525{ 526 int i; 527 struct analog *analog = port->analog; 528 int max[4]; 529 530 if (!port->mask) 531 return -1; 532 533 if ((port->mask & 3) != 3 && port->mask != 0xc) { 534 printk(KERN_WARNING "analog.c: Unknown joystick device found " 535 "(data=%#x, %s), probably not analog joystick.\n", 536 port->mask, port->gameport->phys); 537 return -1; 538 } 539 540 541 i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ 542 543 analog[0].mask = i & 0xfffff; 544 545 analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) 546 | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) 547 | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); 548 549 analog[0].mask &= ~(ANALOG_HAT2_CHF) 550 | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); 551 552 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) 553 | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) 554 | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) 555 | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); 556 557 analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) 558 | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) 559 & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); 560 561 analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); 562 563 analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD 564 : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); 565 566 if (port->cooked) { 567 568 for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; 569 570 if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; 571 if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; 572 if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; 573 if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; 574 if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; 575 576 gameport_calibrate(port->gameport, port->axes, max); 577 } 578 579 for (i = 0; i < 4; i++) 580 port->initial[i] = port->axes[i]; 581 582 return -!(analog[0].mask || analog[1].mask); 583} 584 585static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) 586{ 587 int i, t, u, v; 588 589 port->gameport = gameport; 590 591 gameport_set_drvdata(gameport, port); 592 593 if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { 594 595 analog_calibrate_timer(port); 596 597 gameport_trigger(gameport); 598 t = gameport_read(gameport); 599 msleep(ANALOG_MAX_TIME); 600 port->mask = (gameport_read(gameport) ^ t) & t & 0xf; 601 port->fuzz = (port->speed * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; 602 603 for (i = 0; i < ANALOG_INIT_RETRIES; i++) { 604 if (!analog_cooked_read(port)) 605 break; 606 msleep(ANALOG_MAX_TIME); 607 } 608 609 u = v = 0; 610 611 msleep(ANALOG_MAX_TIME); 612 t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); 613 gameport_trigger(gameport); 614 while ((gameport_read(port->gameport) & port->mask) && (u < t)) 615 u++; 616 udelay(ANALOG_SAITEK_DELAY); 617 t = gameport_time(gameport, ANALOG_SAITEK_TIME); 618 gameport_trigger(gameport); 619 while ((gameport_read(port->gameport) & port->mask) && (v < t)) 620 v++; 621 622 if (v < (u >> 1)) { /* FIXME - more than one port */ 623 analog_options[0] |= /* FIXME - more than one port */ 624 ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; 625 return 0; 626 } 627 628 gameport_close(gameport); 629 } 630 631 if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { 632 633 for (i = 0; i < ANALOG_INIT_RETRIES; i++) 634 if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) 635 break; 636 for (i = 0; i < 4; i++) 637 if (port->axes[i] != -1) 638 port->mask |= 1 << i; 639 640 port->fuzz = gameport->fuzz; 641 port->cooked = 1; 642 return 0; 643 } 644 645 return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); 646} 647 648static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) 649{ 650 struct analog_port *port; 651 int i; 652 int err; 653 654 if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) 655 return - ENOMEM; 656 657 err = analog_init_port(gameport, drv, port); 658 if (err) 659 goto fail1; 660 661 err = analog_init_masks(port); 662 if (err) 663 goto fail2; 664 665 gameport_set_poll_handler(gameport, analog_poll); 666 gameport_set_poll_interval(gameport, 10); 667 668 for (i = 0; i < 2; i++) 669 if (port->analog[i].mask) { 670 err = analog_init_device(port, port->analog + i, i); 671 if (err) 672 goto fail3; 673 } 674 675 return 0; 676 677 fail3: while (--i >= 0) 678 if (port->analog[i].mask) 679 input_unregister_device(port->analog[i].dev); 680 fail2: gameport_close(gameport); 681 fail1: gameport_set_drvdata(gameport, NULL); 682 kfree(port); 683 return err; 684} 685 686static void analog_disconnect(struct gameport *gameport) 687{ 688 struct analog_port *port = gameport_get_drvdata(gameport); 689 int i; 690 691 for (i = 0; i < 2; i++) 692 if (port->analog[i].mask) 693 input_unregister_device(port->analog[i].dev); 694 gameport_close(gameport); 695 gameport_set_drvdata(gameport, NULL); 696 printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", 697 port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, 698 port->gameport->phys); 699 kfree(port); 700} 701 702struct analog_types { 703 char *name; 704 int value; 705}; 706 707static struct analog_types analog_types[] = { 708 { "none", 0x00000000 }, 709 { "auto", 0x000000ff }, 710 { "2btn", 0x0000003f }, 711 { "y-joy", 0x0cc00033 }, 712 { "y-pad", 0x8cc80033 }, 713 { "fcs", 0x000008f7 }, 714 { "chf", 0x000002ff }, 715 { "fullchf", 0x000007ff }, 716 { "gamepad", 0x000830f3 }, 717 { "gamepad8", 0x0008f0f3 }, 718 { NULL, 0 } 719}; 720 721static void analog_parse_options(void) 722{ 723 int i, j; 724 char *end; 725 726 for (i = 0; i < js_nargs; i++) { 727 728 for (j = 0; analog_types[j].name; j++) 729 if (!strcmp(analog_types[j].name, js[i])) { 730 analog_options[i] = analog_types[j].value; 731 break; 732 } 733 if (analog_types[j].name) continue; 734 735 analog_options[i] = simple_strtoul(js[i], &end, 0); 736 if (end != js[i]) continue; 737 738 analog_options[i] = 0xff; 739 if (!strlen(js[i])) continue; 740 741 printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); 742 } 743 744 for (; i < ANALOG_PORTS; i++) 745 analog_options[i] = 0xff; 746} 747 748/* 749 * The gameport device structure. 750 */ 751 752static struct gameport_driver analog_drv = { 753 .driver = { 754 .name = "analog", 755 }, 756 .description = DRIVER_DESC, 757 .connect = analog_connect, 758 .disconnect = analog_disconnect, 759}; 760 761static int __init analog_init(void) 762{ 763 analog_parse_options(); 764 return gameport_register_driver(&analog_drv); 765} 766 767static void __exit analog_exit(void) 768{ 769 gameport_unregister_driver(&analog_drv); 770} 771 772module_init(analog_init); 773module_exit(analog_exit); 774