drivers/input/joystick/gamecon.c

   1 /*
   2  * $Id: gamecon.c,v 1.22 2002/07/01 15:42:25 vojtech Exp $
   3  *
   4  *  Copyright (c) 1999-2001 Vojtech Pavlik
   5  *
   6  *  Based on the work of:
   7  *      Andree Borrmann         John Dahlstrom
   8  *      David Kuder             Nathan Hand
   9  */
  10
  11 /*
  12  * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux
  13  */
  14
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program; if not, write to the Free Software
  28  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  *
  30  * Should you need to contact me, the author, you can do so either by
  31  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  32  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  33  */
  34
  35 #include <linux/kernel.h>
  36 #include <linux/delay.h>
  37 #include <linux/module.h>
  38 #include <linux/moduleparam.h>
  39 #include <linux/init.h>
  40 #include <linux/parport.h>
  41 #include <linux/input.h>
  42
  43 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  44 MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
  45 MODULE_LICENSE("GPL");
  46
  47 static int gc[] __initdata = { -1, 0, 0, 0, 0, 0 };
  48 static int gc_nargs __initdata = 0;
  49 module_param_array_named(map, gc, int, gc_nargs, 0);
  50 MODULE_PARM_DESC(map, "Describers first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
  51
  52 static int gc_2[] __initdata = { -1, 0, 0, 0, 0, 0 };
  53 static int gc_nargs_2 __initdata = 0;
  54 module_param_array_named(map2, gc_2, int, gc_nargs_2, 0);
  55 MODULE_PARM_DESC(map2, "Describers second set of devices");
  56
  57 static int gc_3[] __initdata = { -1, 0, 0, 0, 0, 0 };
  58 static int gc_nargs_3 __initdata = 0;
  59 module_param_array_named(map3, gc_3, int, gc_nargs_3, 0);
  60 MODULE_PARM_DESC(map3, "Describers third set of devices");
  61
  62 __obsolete_setup("gc=");
  63 __obsolete_setup("gc_2=");
  64 __obsolete_setup("gc_3=");
  65
  66 /* see also gs_psx_delay parameter in PSX support section */
  67
  68 #define GC_SNES         1
  69 #define GC_NES          2
  70 #define GC_NES4         3
  71 #define GC_MULTI        4
  72 #define GC_MULTI2       5
  73 #define GC_N64          6
  74 #define GC_PSX          7
  75
  76 #define GC_MAX          7
  77
  78 #define GC_REFRESH_TIME HZ/100
  79
  80 struct gc {
  81         struct pardevice *pd;
  82         struct input_dev dev[5];
  83         struct timer_list timer;
  84         unsigned char pads[GC_MAX + 1];
  85         int used;
  86         char phys[5][32];
  87 };
  88
  89 static struct gc *gc_base[3];
  90
  91 static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
  92
  93 static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
  94                                 "Multisystem 2-button joystick", "N64 controller", "PSX controller" };
  95 /*
  96  * N64 support.
  97  */
  98
  99 static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
 100 static short gc_n64_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_TRIGGER, BTN_START };
 101
 102 #define GC_N64_LENGTH           32              /* N64 bit length, not including stop bit */
 103 #define GC_N64_REQUEST_LENGTH   37              /* transmit request sequence is 9 bits long */
 104 #define GC_N64_DELAY            133             /* delay between transmit request, and response ready (us) */
 105 #define GC_N64_REQUEST          0x1dd1111111ULL /* the request data command (encoded for 000000011) */
 106 #define GC_N64_DWS              3               /* delay between write segments (required for sound playback because of ISA DMA) */
 107                                                 /* GC_N64_DWS > 24 is known to fail */
 108 #define GC_N64_POWER_W          0xe2            /* power during write (transmit request) */
 109 #define GC_N64_POWER_R          0xfd            /* power during read */
 110 #define GC_N64_OUT              0x1d            /* output bits to the 4 pads */
 111                                                 /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
 112                                                 /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
 113                                                 /* than 123 us */
 114 #define GC_N64_CLOCK            0x02            /* clock bits for read */
 115
 116 /*
 117  * gc_n64_read_packet() reads an N64 packet.
 118  * Each pad uses one bit per byte. So all pads connected to this port are read in parallel.
 119  */
 120
 121 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
 122 {
 123         int i;
 124         unsigned long flags;
 125
 126 /*
 127  * Request the pad to transmit data
 128  */
 129
 130         local_irq_save(flags);
 131         for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) {
 132                 parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0));
 133                 udelay(GC_N64_DWS);
 134         }
 135         local_irq_restore(flags);
 136
 137 /*
 138  * Wait for the pad response to be loaded into the 33-bit register of the adapter
 139  */
 140
 141         udelay(GC_N64_DELAY);
 142
 143 /*
 144  * Grab data (ignoring the last bit, which is a stop bit)
 145  */
 146
 147         for (i = 0; i < GC_N64_LENGTH; i++) {
 148                 parport_write_data(gc->pd->port, GC_N64_POWER_R);
 149                 data[i] = parport_read_status(gc->pd->port);
 150                 parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
 151          }
 152
 153 /*
 154  * We must wait 200 ms here for the controller to reinitialize before the next read request.
 155  * No worries as long as gc_read is polled less frequently than this.
 156  */
 157
 158 }
 159
 160 /*
 161  * NES/SNES support.
 162  */
 163
 164 #define GC_NES_DELAY    6       /* Delay between bits - 6us */
 165 #define GC_NES_LENGTH   8       /* The NES pads use 8 bits of data */
 166 #define GC_SNES_LENGTH  12      /* The SNES true length is 16, but the last 4 bits are unused */
 167
 168 #define GC_NES_POWER    0xfc
 169 #define GC_NES_CLOCK    0x01
 170 #define GC_NES_LATCH    0x02
 171
 172 static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
 173 static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
 174 static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
 175
 176 /*
 177  * gc_nes_read_packet() reads a NES/SNES packet.
 178  * Each pad uses one bit per byte. So all pads connected to
 179  * this port are read in parallel.
 180  */
 181
 182 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
 183 {
 184         int i;
 185
 186         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
 187         udelay(GC_NES_DELAY * 2);
 188         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
 189
 190         for (i = 0; i < length; i++) {
 191                 udelay(GC_NES_DELAY);
 192                 parport_write_data(gc->pd->port, GC_NES_POWER);
 193                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
 194                 udelay(GC_NES_DELAY);
 195                 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
 196         }
 197 }
 198
 199 /*
 200  * Multisystem joystick support
 201  */
 202
 203 #define GC_MULTI_LENGTH         5       /* Multi system joystick packet length is 5 */
 204 #define GC_MULTI2_LENGTH        6       /* One more bit for one more button */
 205
 206 /*
 207  * gc_multi_read_packet() reads a Multisystem joystick packet.
 208  */
 209
 210 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
 211 {
 212         int i;
 213
 214         for (i = 0; i < length; i++) {
 215                 parport_write_data(gc->pd->port, ~(1 << i));
 216                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
 217         }
 218 }
 219
 220 /*
 221  * PSX support
 222  *
 223  * See documentation at:
 224  *      http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
 225  *      http://www.gamesx.com/controldata/psxcont/psxcont.htm
 226  *      ftp://milano.usal.es/pablo/
 227  *
 228  */
 229
 230 #define GC_PSX_DELAY    25              /* 25 usec */
 231 #define GC_PSX_LENGTH   8               /* talk to the controller in bytes */
 232
 233 #define GC_PSX_MOUSE    1               /* Mouse */
 234 #define GC_PSX_NEGCON   2               /* NegCon */
 235 #define GC_PSX_NORMAL   4               /* Digital / Analog or Rumble in Digital mode  */
 236 #define GC_PSX_ANALOG   5               /* Analog in Analog mode / Rumble in Green mode */
 237 #define GC_PSX_RUMBLE   7               /* Rumble in Red mode */
 238
 239 #define GC_PSX_CLOCK    0x04            /* Pin 4 */
 240 #define GC_PSX_COMMAND  0x01            /* Pin 1 */
 241 #define GC_PSX_POWER    0xf8            /* Pins 5-9 */
 242 #define GC_PSX_SELECT   0x02            /* Pin 3 */
 243
 244 #define GC_PSX_ID(x)    ((x) >> 4)      /* High nibble is device type */
 245 #define GC_PSX_LEN(x)   ((x) & 0xf)     /* Low nibble is length in words */
 246
 247 static int gc_psx_delay = GC_PSX_DELAY;
 248 module_param_named(psx_delay, gc_psx_delay, uint, 0);
 249 MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
 250
 251 __obsolete_setup("gc_psx_delay=");
 252
 253 static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
 254 static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
 255                                 BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
 256
 257 /*
 258  * gc_psx_command() writes 8bit command and reads 8bit data from
 259  * the psx pad.
 260  */
 261
 262 static int gc_psx_command(struct gc *gc, int b)
 263 {
 264         int i, cmd, data = 0;
 265
 266         for (i = 0; i < 8; i++, b >>= 1) {
 267                 cmd = (b & 1) ? GC_PSX_COMMAND : 0;
 268                 parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
 269                 udelay(gc_psx_delay);
 270                 data |= ((parport_read_status(gc->pd->port) ^ 0x80) & gc->pads[GC_PSX]) ? (1 << i) : 0;
 271                 parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
 272                 udelay(gc_psx_delay);
 273         }
 274         return data;
 275 }
 276
 277 /*
 278  * gc_psx_read_packet() reads a whole psx packet and returns
 279  * device identifier code.
 280  */
 281
 282 static int gc_psx_read_packet(struct gc *gc, unsigned char *data)
 283 {
 284         int i, id;
 285         unsigned long flags;
 286
 287         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  /* Select pad */
 288         udelay(gc_psx_delay * 2);
 289         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);                  /* Deselect, begin command */
 290         udelay(gc_psx_delay * 2);
 291
 292         local_irq_save(flags);
 293
 294         gc_psx_command(gc, 0x01);                                                       /* Access pad */
 295         id = gc_psx_command(gc, 0x42);                                                  /* Get device id */
 296         if (gc_psx_command(gc, 0) == 0x5a) {                                            /* Okay? */
 297                 for (i = 0; i < GC_PSX_LEN(id) * 2; i++)
 298                         data[i] = gc_psx_command(gc, 0);
 299         } else id = 0;
 300
 301         local_irq_restore(flags);
 302
 303         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
 304
 305         return GC_PSX_ID(id);
 306 }
 307
 308 /*
 309  * gc_timer() reads and analyzes console pads data.
 310  */
 311
 312 #define GC_MAX_LENGTH GC_N64_LENGTH
 313
 314 static void gc_timer(unsigned long private)
 315 {
 316         struct gc *gc = (void *) private;
 317         struct input_dev *dev = gc->dev;
 318         unsigned char data[GC_MAX_LENGTH];
 319         int i, j, s;
 320
 321 /*
 322  * N64 pads - must be read first, any read confuses them for 200 us
 323  */
 324
 325         if (gc->pads[GC_N64]) {
 326
 327                 gc_n64_read_packet(gc, data);
 328
 329                 for (i = 0; i < 5; i++) {
 330
 331                         s = gc_status_bit[i];
 332
 333                         if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
 334
 335                                 signed char axes[2];
 336                                 axes[0] = axes[1] = 0;
 337
 338                                 for (j = 0; j < 8; j++) {
 339                                         if (data[23 - j] & s) axes[0] |= 1 << j;
 340                                         if (data[31 - j] & s) axes[1] |= 1 << j;
 341                                 }
 342
 343                                 input_report_abs(dev + i, ABS_X,  axes[0]);
 344                                 input_report_abs(dev + i, ABS_Y, -axes[1]);
 345
 346                                 input_report_abs(dev + i, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
 347                                 input_report_abs(dev + i, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
 348
 349                                 for (j = 0; j < 10; j++)
 350                                         input_report_key(dev + i, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
 351
 352                                 input_sync(dev + i);
 353                         }
 354                 }
 355         }
 356
 357 /*
 358  * NES and SNES pads
 359  */
 360
 361         if (gc->pads[GC_NES] || gc->pads[GC_SNES]) {
 362
 363                 gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
 364
 365                 for (i = 0; i < 5; i++) {
 366
 367                         s = gc_status_bit[i];
 368
 369                         if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
 370                                 input_report_abs(dev + i, ABS_X, !(s & data[6]) - !(s & data[7]));
 371                                 input_report_abs(dev + i, ABS_Y, !(s & data[4]) - !(s & data[5]));
 372                         }
 373
 374                         if (s & gc->pads[GC_NES])
 375                                 for (j = 0; j < 4; j++)
 376                                         input_report_key(dev + i, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
 377
 378                         if (s & gc->pads[GC_SNES])
 379                                 for (j = 0; j < 8; j++)
 380                                         input_report_key(dev + i, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
 381
 382                         input_sync(dev + i);
 383                 }
 384         }
 385
 386 /*
 387  * Multi and Multi2 joysticks
 388  */
 389
 390         if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) {
 391
 392                 gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
 393
 394                 for (i = 0; i < 5; i++) {
 395
 396                         s = gc_status_bit[i];
 397
 398                         if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
 399                                 input_report_abs(dev + i, ABS_X,  !(s & data[2]) - !(s & data[3]));
 400                                 input_report_abs(dev + i, ABS_Y,  !(s & data[0]) - !(s & data[1]));
 401                                 input_report_key(dev + i, BTN_TRIGGER, s & data[4]);
 402                         }
 403
 404                         if (s & gc->pads[GC_MULTI2])
 405                                 input_report_key(dev + i, BTN_THUMB, s & data[5]);
 406
 407                         input_sync(dev + i);
 408                 }
 409         }
 410
 411 /*
 412  * PSX controllers
 413  */
 414
 415         if (gc->pads[GC_PSX]) {
 416
 417                 for (i = 0; i < 5; i++)
 418                         if (gc->pads[GC_PSX] & gc_status_bit[i])
 419                                 break;
 420
 421                 switch (gc_psx_read_packet(gc, data)) {
 422
 423                         case GC_PSX_RUMBLE:
 424
 425                                 input_report_key(dev + i, BTN_THUMBL, ~data[0] & 0x04);
 426                                 input_report_key(dev + i, BTN_THUMBR, ~data[0] & 0x02);
 427                                 input_sync(dev + i);
 428
 429                         case GC_PSX_NEGCON:
 430                         case GC_PSX_ANALOG:
 431
 432                                 for (j = 0; j < 4; j++)
 433                                         input_report_abs(dev + i, gc_psx_abs[j], data[j + 2]);
 434
 435                                 input_report_abs(dev + i, ABS_HAT0X, !(data[0] & 0x20) - !(data[0] & 0x80));
 436                                 input_report_abs(dev + i, ABS_HAT0Y, !(data[0] & 0x40) - !(data[0] & 0x10));
 437
 438                                 for (j = 0; j < 8; j++)
 439                                         input_report_key(dev + i, gc_psx_btn[j], ~data[1] & (1 << j));
 440
 441                                 input_report_key(dev + i, BTN_START,  ~data[0] & 0x08);
 442                                 input_report_key(dev + i, BTN_SELECT, ~data[0] & 0x01);
 443
 444                                 input_sync(dev + i);
 445
 446                                 break;
 447
 448                         case GC_PSX_NORMAL:
 449
 450                                 input_report_abs(dev + i, ABS_X, 128 + !(data[0] & 0x20) * 127 - !(data[0] & 0x80) * 128);
 451                                 input_report_abs(dev + i, ABS_Y, 128 + !(data[0] & 0x40) * 127 - !(data[0] & 0x10) * 128);
 452
 453                                 for (j = 0; j < 8; j++)
 454                                         input_report_key(dev + i, gc_psx_btn[j], ~data[1] & (1 << j));
 455
 456                                 input_report_key(dev + i, BTN_START,  ~data[0] & 0x08);
 457                                 input_report_key(dev + i, BTN_SELECT, ~data[0] & 0x01);
 458
 459                                 input_sync(dev + i);
 460
 461                                 break;
 462                 }
 463         }
 464
 465         mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
 466 }
 467
 468 static int gc_open(struct input_dev *dev)
 469 {
 470         struct gc *gc = dev->private;
 471         if (!gc->used++) {
 472                 parport_claim(gc->pd);
 473                 parport_write_control(gc->pd->port, 0x04);
 474                 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
 475         }
 476         return 0;
 477 }
 478
 479 static void gc_close(struct input_dev *dev)
 480 {
 481         struct gc *gc = dev->private;
 482         if (!--gc->used) {
 483                 del_timer(&gc->timer);
 484                 parport_write_control(gc->pd->port, 0x00);
 485                 parport_release(gc->pd);
 486         }
 487 }
 488
 489 static struct gc __init *gc_probe(int *config, int nargs)
 490 {
 491         struct gc *gc;
 492         struct parport *pp;
 493         int i, j, psx;
 494         unsigned char data[32];
 495
 496         if (config[0] < 0)
 497                 return NULL;
 498
 499         if (nargs < 2) {
 500                 printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
 501                 return NULL;
 502         }
 503
 504         pp = parport_find_number(config[0]);
 505
 506         if (!pp) {
 507                 printk(KERN_ERR "gamecon.c: no such parport\n");
 508                 return NULL;
 509         }
 510
 511         if (!(gc = kmalloc(sizeof(struct gc), GFP_KERNEL))) {
 512                 parport_put_port(pp);
 513                 return NULL;
 514         }
 515         memset(gc, 0, sizeof(struct gc));
 516
 517         gc->pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
 518
 519         parport_put_port(pp);
 520
 521         if (!gc->pd) {
 522                 printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n");
 523                 kfree(gc);
 524                 return NULL;
 525         }
 526
 527         parport_claim(gc->pd);
 528
 529         init_timer(&gc->timer);
 530         gc->timer.data = (long) gc;
 531         gc->timer.function = gc_timer;
 532
 533         for (i = 0; i < nargs - 1; i++) {
 534
 535                 if (!config[i + 1])
 536                         continue;
 537
 538                 if (config[i + 1] < 1 || config[i + 1] > GC_MAX) {
 539                         printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", config[i + 1]);
 540                         continue;
 541                 }
 542
 543                 gc->dev[i].private = gc;
 544                 gc->dev[i].open = gc_open;
 545                 gc->dev[i].close = gc_close;
 546
 547                 gc->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 548
 549                 for (j = 0; j < 2; j++) {
 550                         set_bit(ABS_X + j, gc->dev[i].absbit);
 551                         gc->dev[i].absmin[ABS_X + j] = -1;
 552                         gc->dev[i].absmax[ABS_X + j] =  1;
 553                 }
 554
 555                 gc->pads[0] |= gc_status_bit[i];
 556                 gc->pads[config[i + 1]] |= gc_status_bit[i];
 557
 558                 switch(config[i + 1]) {
 559
 560                         case GC_N64:
 561                                 for (j = 0; j < 10; j++)
 562                                         set_bit(gc_n64_btn[j], gc->dev[i].keybit);
 563
 564                                 for (j = 0; j < 2; j++) {
 565                                         set_bit(ABS_X + j, gc->dev[i].absbit);
 566                                         gc->dev[i].absmin[ABS_X + j] = -127;
 567                                         gc->dev[i].absmax[ABS_X + j] =  126;
 568                                         gc->dev[i].absflat[ABS_X + j] = 2;
 569                                         set_bit(ABS_HAT0X + j, gc->dev[i].absbit);
 570                                         gc->dev[i].absmin[ABS_HAT0X + j] = -1;
 571                                         gc->dev[i].absmax[ABS_HAT0X + j] =  1;
 572                                 }
 573
 574                                 break;
 575
 576                         case GC_SNES:
 577                                 for (j = 4; j < 8; j++)
 578                                         set_bit(gc_snes_btn[j], gc->dev[i].keybit);
 579                         case GC_NES:
 580                                 for (j = 0; j < 4; j++)
 581                                         set_bit(gc_snes_btn[j], gc->dev[i].keybit);
 582                                 break;
 583
 584                         case GC_MULTI2:
 585                                 set_bit(BTN_THUMB, gc->dev[i].keybit);
 586                         case GC_MULTI:
 587                                 set_bit(BTN_TRIGGER, gc->dev[i].keybit);
 588                                 break;
 589
 590                         case GC_PSX:
 591
 592                                 psx = gc_psx_read_packet(gc, data);
 593
 594                                 switch(psx) {
 595                                         case GC_PSX_NEGCON:
 596                                         case GC_PSX_NORMAL:
 597                                         case GC_PSX_ANALOG:
 598                                         case GC_PSX_RUMBLE:
 599
 600                                                 for (j = 0; j < 6; j++) {
 601                                                         psx = gc_psx_abs[j];
 602                                                         set_bit(psx, gc->dev[i].absbit);
 603                                                         if (j < 4) {
 604                                                                 gc->dev[i].absmin[psx] = 4;
 605                                                                 gc->dev[i].absmax[psx] = 252;
 606                                                                 gc->dev[i].absflat[psx] = 2;
 607                                                         } else {
 608                                                                 gc->dev[i].absmin[psx] = -1;
 609                                                                 gc->dev[i].absmax[psx] = 1;
 610                                                         }
 611                                                 }
 612
 613                                                 for (j = 0; j < 12; j++)
 614                                                         set_bit(gc_psx_btn[j], gc->dev[i].keybit);
 615
 616                                                 break;
 617
 618                                         case 0:
 619                                                 gc->pads[GC_PSX] &= ~gc_status_bit[i];
 620                                                 printk(KERN_ERR "gamecon.c: No PSX controller found.\n");
 621                                                 break;
 622
 623                                         default:
 624                                                 gc->pads[GC_PSX] &= ~gc_status_bit[i];
 625                                                 printk(KERN_WARNING "gamecon.c: Unsupported PSX controller %#x,"
 626                                                         " please report to <vojtech@ucw.cz>.\n", psx);
 627                                 }
 628                                 break;
 629                 }
 630
 631                 sprintf(gc->phys[i], "%s/input%d", gc->pd->port->name, i);
 632
 633                 gc->dev[i].name = gc_names[config[i + 1]];
 634                 gc->dev[i].phys = gc->phys[i];
 635                 gc->dev[i].id.bustype = BUS_PARPORT;
 636                 gc->dev[i].id.vendor = 0x0001;
 637                 gc->dev[i].id.product = config[i + 1];
 638                 gc->dev[i].id.version = 0x0100;
 639         }
 640
 641         parport_release(gc->pd);
 642
 643         if (!gc->pads[0]) {
 644                 parport_unregister_device(gc->pd);
 645                 kfree(gc);
 646                 return NULL;
 647         }
 648
 649         for (i = 0; i < 5; i++)
 650                 if (gc->pads[0] & gc_status_bit[i]) {
 651                         input_register_device(gc->dev + i);
 652                         printk(KERN_INFO "input: %s on %s\n", gc->dev[i].name, gc->pd->port->name);
 653                 }
 654
 655         return gc;
 656 }
 657
 658 int __init gc_init(void)
 659 {
 660         gc_base[0] = gc_probe(gc, gc_nargs);
 661         gc_base[1] = gc_probe(gc_2, gc_nargs_2);
 662         gc_base[2] = gc_probe(gc_3, gc_nargs_3);
 663
 664         if (gc_base[0] || gc_base[1] || gc_base[2])
 665                 return 0;
 666
 667         return -ENODEV;
 668 }
 669
 670 void __exit gc_exit(void)
 671 {
 672         int i, j;
 673
 674         for (i = 0; i < 3; i++)
 675                 if (gc_base[i]) {
 676                         for (j = 0; j < 5; j++)
 677                                 if (gc_base[i]->pads[0] & gc_status_bit[j])
 678                                         input_unregister_device(gc_base[i]->dev + j);
 679                         parport_unregister_device(gc_base[i]->pd);
 680                 }
 681 }
 682
 683 module_init(gc_init);
 684 module_exit(gc_exit);