drivers/input/joystick/gamecon.c

   1 /*
   2  * NES, SNES, N64, MultiSystem, PSX gamepad driver for Linux
   3  *
   4  *  Copyright (c) 1999-2004     Vojtech Pavlik <vojtech@suse.cz>
   5  *  Copyright (c) 2004          Peter Nelson <rufus-kernel@hackish.org>
   6  *
   7  *  Based on the work of:
   8  *      Andree Borrmann         John Dahlstrom
   9  *      David Kuder             Nathan Hand
  10  */
  11
  12 /*
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  26  *
  27  * Should you need to contact me, the author, you can do so either by
  28  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  29  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/delay.h>
  34 #include <linux/module.h>
  35 #include <linux/moduleparam.h>
  36 #include <linux/init.h>
  37 #include <linux/parport.h>
  38 #include <linux/input.h>
  39
  40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  41 MODULE_DESCRIPTION("NES, SNES, N64, MultiSystem, PSX gamepad driver");
  42 MODULE_LICENSE("GPL");
  43
  44 static int gc[] __initdata = { -1, 0, 0, 0, 0, 0 };
  45 static int gc_nargs __initdata = 0;
  46 module_param_array_named(map, gc, int, gc_nargs, 0);
  47 MODULE_PARM_DESC(map, "Describers first set of devices (<parport#>,<pad1>,<pad2>,..<pad5>)");
  48
  49 static int gc_2[] __initdata = { -1, 0, 0, 0, 0, 0 };
  50 static int gc_nargs_2 __initdata = 0;
  51 module_param_array_named(map2, gc_2, int, gc_nargs_2, 0);
  52 MODULE_PARM_DESC(map2, "Describers second set of devices");
  53
  54 static int gc_3[] __initdata = { -1, 0, 0, 0, 0, 0 };
  55 static int gc_nargs_3 __initdata = 0;
  56 module_param_array_named(map3, gc_3, int, gc_nargs_3, 0);
  57 MODULE_PARM_DESC(map3, "Describers third set of devices");
  58
  59 __obsolete_setup("gc=");
  60 __obsolete_setup("gc_2=");
  61 __obsolete_setup("gc_3=");
  62
  63 /* see also gs_psx_delay parameter in PSX support section */
  64
  65 #define GC_SNES         1
  66 #define GC_NES          2
  67 #define GC_NES4         3
  68 #define GC_MULTI        4
  69 #define GC_MULTI2       5
  70 #define GC_N64          6
  71 #define GC_PSX          7
  72 #define GC_DDR          8
  73
  74 #define GC_MAX          8
  75
  76 #define GC_REFRESH_TIME HZ/100
  77
  78 struct gc {
  79         struct pardevice *pd;
  80         struct input_dev dev[5];
  81         struct timer_list timer;
  82         unsigned char pads[GC_MAX + 1];
  83         int used;
  84         char phys[5][32];
  85 };
  86
  87 static struct gc *gc_base[3];
  88
  89 static int gc_status_bit[] = { 0x40, 0x80, 0x20, 0x10, 0x08 };
  90
  91 static char *gc_names[] = { NULL, "SNES pad", "NES pad", "NES FourPort", "Multisystem joystick",
  92                                 "Multisystem 2-button joystick", "N64 controller", "PSX controller"
  93                                 "PSX DDR controller" };
  94 /*
  95  * N64 support.
  96  */
  97
  98 static unsigned char gc_n64_bytes[] = { 0, 1, 13, 15, 14, 12, 10, 11, 2, 3 };
  99 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 };
 100
 101 #define GC_N64_LENGTH           32              /* N64 bit length, not including stop bit */
 102 #define GC_N64_REQUEST_LENGTH   37              /* transmit request sequence is 9 bits long */
 103 #define GC_N64_DELAY            133             /* delay between transmit request, and response ready (us) */
 104 #define GC_N64_REQUEST          0x1dd1111111ULL /* the request data command (encoded for 000000011) */
 105 #define GC_N64_DWS              3               /* delay between write segments (required for sound playback because of ISA DMA) */
 106                                                 /* GC_N64_DWS > 24 is known to fail */
 107 #define GC_N64_POWER_W          0xe2            /* power during write (transmit request) */
 108 #define GC_N64_POWER_R          0xfd            /* power during read */
 109 #define GC_N64_OUT              0x1d            /* output bits to the 4 pads */
 110                                                 /* Reading the main axes of any N64 pad is known to fail if the corresponding bit */
 111                                                 /* in GC_N64_OUT is pulled low on the output port (by any routine) for more */
 112                                                 /* than 123 us */
 113 #define GC_N64_CLOCK            0x02            /* clock bits for read */
 114
 115 /*
 116  * gc_n64_read_packet() reads an N64 packet.
 117  * Each pad uses one bit per byte. So all pads connected to this port are read in parallel.
 118  */
 119
 120 static void gc_n64_read_packet(struct gc *gc, unsigned char *data)
 121 {
 122         int i;
 123         unsigned long flags;
 124
 125 /*
 126  * Request the pad to transmit data
 127  */
 128
 129         local_irq_save(flags);
 130         for (i = 0; i < GC_N64_REQUEST_LENGTH; i++) {
 131                 parport_write_data(gc->pd->port, GC_N64_POWER_W | ((GC_N64_REQUEST >> i) & 1 ? GC_N64_OUT : 0));
 132                 udelay(GC_N64_DWS);
 133         }
 134         local_irq_restore(flags);
 135
 136 /*
 137  * Wait for the pad response to be loaded into the 33-bit register of the adapter
 138  */
 139
 140         udelay(GC_N64_DELAY);
 141
 142 /*
 143  * Grab data (ignoring the last bit, which is a stop bit)
 144  */
 145
 146         for (i = 0; i < GC_N64_LENGTH; i++) {
 147                 parport_write_data(gc->pd->port, GC_N64_POWER_R);
 148                 data[i] = parport_read_status(gc->pd->port);
 149                 parport_write_data(gc->pd->port, GC_N64_POWER_R | GC_N64_CLOCK);
 150          }
 151
 152 /*
 153  * We must wait 200 ms here for the controller to reinitialize before the next read request.
 154  * No worries as long as gc_read is polled less frequently than this.
 155  */
 156
 157 }
 158
 159 /*
 160  * NES/SNES support.
 161  */
 162
 163 #define GC_NES_DELAY    6       /* Delay between bits - 6us */
 164 #define GC_NES_LENGTH   8       /* The NES pads use 8 bits of data */
 165 #define GC_SNES_LENGTH  12      /* The SNES true length is 16, but the last 4 bits are unused */
 166
 167 #define GC_NES_POWER    0xfc
 168 #define GC_NES_CLOCK    0x01
 169 #define GC_NES_LATCH    0x02
 170
 171 static unsigned char gc_nes_bytes[] = { 0, 1, 2, 3 };
 172 static unsigned char gc_snes_bytes[] = { 8, 0, 2, 3, 9, 1, 10, 11 };
 173 static short gc_snes_btn[] = { BTN_A, BTN_B, BTN_SELECT, BTN_START, BTN_X, BTN_Y, BTN_TL, BTN_TR };
 174
 175 /*
 176  * gc_nes_read_packet() reads a NES/SNES packet.
 177  * Each pad uses one bit per byte. So all pads connected to
 178  * this port are read in parallel.
 179  */
 180
 181 static void gc_nes_read_packet(struct gc *gc, int length, unsigned char *data)
 182 {
 183         int i;
 184
 185         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK | GC_NES_LATCH);
 186         udelay(GC_NES_DELAY * 2);
 187         parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
 188
 189         for (i = 0; i < length; i++) {
 190                 udelay(GC_NES_DELAY);
 191                 parport_write_data(gc->pd->port, GC_NES_POWER);
 192                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
 193                 udelay(GC_NES_DELAY);
 194                 parport_write_data(gc->pd->port, GC_NES_POWER | GC_NES_CLOCK);
 195         }
 196 }
 197
 198 /*
 199  * Multisystem joystick support
 200  */
 201
 202 #define GC_MULTI_LENGTH         5       /* Multi system joystick packet length is 5 */
 203 #define GC_MULTI2_LENGTH        6       /* One more bit for one more button */
 204
 205 /*
 206  * gc_multi_read_packet() reads a Multisystem joystick packet.
 207  */
 208
 209 static void gc_multi_read_packet(struct gc *gc, int length, unsigned char *data)
 210 {
 211         int i;
 212
 213         for (i = 0; i < length; i++) {
 214                 parport_write_data(gc->pd->port, ~(1 << i));
 215                 data[i] = parport_read_status(gc->pd->port) ^ 0x7f;
 216         }
 217 }
 218
 219 /*
 220  * PSX support
 221  *
 222  * See documentation at:
 223  *      http://www.dim.com/~mackys/psxmemcard/ps-eng2.txt
 224  *      http://www.gamesx.com/controldata/psxcont/psxcont.htm
 225  *      ftp://milano.usal.es/pablo/
 226  *
 227  */
 228
 229 #define GC_PSX_DELAY    25              /* 25 usec */
 230 #define GC_PSX_LENGTH   8               /* talk to the controller in bytes */
 231
 232 #define GC_PSX_MOUSE    1               /* Mouse */
 233 #define GC_PSX_NEGCON   2               /* NegCon */
 234 #define GC_PSX_NORMAL   4               /* Digital / Analog or Rumble in Digital mode  */
 235 #define GC_PSX_ANALOG   5               /* Analog in Analog mode / Rumble in Green mode */
 236 #define GC_PSX_RUMBLE   7               /* Rumble in Red mode */
 237
 238 #define GC_PSX_CLOCK    0x04            /* Pin 4 */
 239 #define GC_PSX_COMMAND  0x01            /* Pin 2 */
 240 #define GC_PSX_POWER    0xf8            /* Pins 5-9 */
 241 #define GC_PSX_SELECT   0x02            /* Pin 3 */
 242
 243 #define GC_PSX_ID(x)    ((x) >> 4)      /* High nibble is device type */
 244 #define GC_PSX_LEN(x)   ((x) & 0xf)     /* Low nibble is length in words */
 245
 246 static int gc_psx_delay = GC_PSX_DELAY;
 247 module_param_named(psx_delay, gc_psx_delay, uint, 0);
 248 MODULE_PARM_DESC(psx_delay, "Delay when accessing Sony PSX controller (usecs)");
 249
 250 __obsolete_setup("gc_psx_delay=");
 251
 252 static short gc_psx_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_HAT0X, ABS_HAT0Y };
 253 static short gc_psx_btn[] = { BTN_TL, BTN_TR, BTN_TL2, BTN_TR2, BTN_A, BTN_B, BTN_X, BTN_Y,
 254                                 BTN_START, BTN_SELECT, BTN_THUMBL, BTN_THUMBR };
 255 static short gc_psx_ddr_btn[] = { BTN_0, BTN_1, BTN_2, BTN_3 };
 256
 257 /*
 258  * gc_psx_command() writes 8bit command and reads 8bit data from
 259  * the psx pad.
 260  */
 261
 262 static void gc_psx_command(struct gc *gc, int b, unsigned char data[GC_PSX_LENGTH])
 263 {
 264         int i, j, cmd, read;
 265         for (i = 0; i < 5; i++)
 266                 data[i] = 0;
 267
 268         for (i = 0; i < 8; i++, b >>= 1) {
 269                 cmd = (b & 1) ? GC_PSX_COMMAND : 0;
 270                 parport_write_data(gc->pd->port, cmd | GC_PSX_POWER);
 271                 udelay(gc_psx_delay);
 272                 read = parport_read_status(gc->pd->port) ^ 0x80;
 273                 for (j = 0; j < 5; j++)
 274                         data[j] |= (read & gc_status_bit[j] & gc->pads[GC_PSX]) ? (1 << i) : 0;
 275                 parport_write_data(gc->pd->port, cmd | GC_PSX_CLOCK | GC_PSX_POWER);
 276                 udelay(gc_psx_delay);
 277         }
 278 }
 279
 280 /*
 281  * gc_psx_read_packet() reads a whole psx packet and returns
 282  * device identifier code.
 283  */
 284
 285 static void gc_psx_read_packet(struct gc *gc, unsigned char data[5][GC_PSX_LENGTH], unsigned char id[5])
 286 {
 287         int i, j, max_len = 0;
 288         unsigned long flags;
 289         unsigned char data2[5];
 290
 291         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);  /* Select pad */
 292         udelay(gc_psx_delay);
 293         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_POWER);                  /* Deselect, begin command */
 294         udelay(gc_psx_delay);
 295
 296         local_irq_save(flags);
 297
 298         gc_psx_command(gc, 0x01, data2);                                                /* Access pad */
 299         gc_psx_command(gc, 0x42, id);                                                   /* Get device ids */
 300         gc_psx_command(gc, 0, data2);                                                   /* Dump status */
 301
 302         for (i =0; i < 5; i++)                                                          /* Find the longest pad */
 303                 if((gc_status_bit[i] & gc->pads[GC_PSX]) && (GC_PSX_LEN(id[i]) > max_len))
 304                         max_len = GC_PSX_LEN(id[i]);
 305
 306         for (i = 0; i < max_len * 2; i++) {                                             /* Read in all the data */
 307                 gc_psx_command(gc, 0, data2);
 308                 for (j = 0; j < 5; j++)
 309                         data[j][i] = data2[j];
 310         }
 311
 312         local_irq_restore(flags);
 313
 314         parport_write_data(gc->pd->port, GC_PSX_CLOCK | GC_PSX_SELECT | GC_PSX_POWER);
 315
 316         for(i = 0; i < 5; i++)                                                          /* Set id's to the real value */
 317                 id[i] = GC_PSX_ID(id[i]);
 318 }
 319
 320 /*
 321  * gc_timer() reads and analyzes console pads data.
 322  */
 323
 324 #define GC_MAX_LENGTH GC_N64_LENGTH
 325
 326 static void gc_timer(unsigned long private)
 327 {
 328         struct gc *gc = (void *) private;
 329         struct input_dev *dev = gc->dev;
 330         unsigned char data[GC_MAX_LENGTH];
 331         unsigned char data_psx[5][GC_PSX_LENGTH];
 332         int i, j, s;
 333
 334 /*
 335  * N64 pads - must be read first, any read confuses them for 200 us
 336  */
 337
 338         if (gc->pads[GC_N64]) {
 339
 340                 gc_n64_read_packet(gc, data);
 341
 342                 for (i = 0; i < 5; i++) {
 343
 344                         s = gc_status_bit[i];
 345
 346                         if (s & gc->pads[GC_N64] & ~(data[8] | data[9])) {
 347
 348                                 signed char axes[2];
 349                                 axes[0] = axes[1] = 0;
 350
 351                                 for (j = 0; j < 8; j++) {
 352                                         if (data[23 - j] & s) axes[0] |= 1 << j;
 353                                         if (data[31 - j] & s) axes[1] |= 1 << j;
 354                                 }
 355
 356                                 input_report_abs(dev + i, ABS_X,  axes[0]);
 357                                 input_report_abs(dev + i, ABS_Y, -axes[1]);
 358
 359                                 input_report_abs(dev + i, ABS_HAT0X, !(s & data[6]) - !(s & data[7]));
 360                                 input_report_abs(dev + i, ABS_HAT0Y, !(s & data[4]) - !(s & data[5]));
 361
 362                                 for (j = 0; j < 10; j++)
 363                                         input_report_key(dev + i, gc_n64_btn[j], s & data[gc_n64_bytes[j]]);
 364
 365                                 input_sync(dev + i);
 366                         }
 367                 }
 368         }
 369
 370 /*
 371  * NES and SNES pads
 372  */
 373
 374         if (gc->pads[GC_NES] || gc->pads[GC_SNES]) {
 375
 376                 gc_nes_read_packet(gc, gc->pads[GC_SNES] ? GC_SNES_LENGTH : GC_NES_LENGTH, data);
 377
 378                 for (i = 0; i < 5; i++) {
 379
 380                         s = gc_status_bit[i];
 381
 382                         if (s & (gc->pads[GC_NES] | gc->pads[GC_SNES])) {
 383                                 input_report_abs(dev + i, ABS_X, !(s & data[6]) - !(s & data[7]));
 384                                 input_report_abs(dev + i, ABS_Y, !(s & data[4]) - !(s & data[5]));
 385                         }
 386
 387                         if (s & gc->pads[GC_NES])
 388                                 for (j = 0; j < 4; j++)
 389                                         input_report_key(dev + i, gc_snes_btn[j], s & data[gc_nes_bytes[j]]);
 390
 391                         if (s & gc->pads[GC_SNES])
 392                                 for (j = 0; j < 8; j++)
 393                                         input_report_key(dev + i, gc_snes_btn[j], s & data[gc_snes_bytes[j]]);
 394
 395                         input_sync(dev + i);
 396                 }
 397         }
 398
 399 /*
 400  * Multi and Multi2 joysticks
 401  */
 402
 403         if (gc->pads[GC_MULTI] || gc->pads[GC_MULTI2]) {
 404
 405                 gc_multi_read_packet(gc, gc->pads[GC_MULTI2] ? GC_MULTI2_LENGTH : GC_MULTI_LENGTH, data);
 406
 407                 for (i = 0; i < 5; i++) {
 408
 409                         s = gc_status_bit[i];
 410
 411                         if (s & (gc->pads[GC_MULTI] | gc->pads[GC_MULTI2])) {
 412                                 input_report_abs(dev + i, ABS_X,  !(s & data[2]) - !(s & data[3]));
 413                                 input_report_abs(dev + i, ABS_Y,  !(s & data[0]) - !(s & data[1]));
 414                                 input_report_key(dev + i, BTN_TRIGGER, s & data[4]);
 415                         }
 416
 417                         if (s & gc->pads[GC_MULTI2])
 418                                 input_report_key(dev + i, BTN_THUMB, s & data[5]);
 419
 420                         input_sync(dev + i);
 421                 }
 422         }
 423
 424 /*
 425  * PSX controllers
 426  */
 427
 428         if (gc->pads[GC_PSX] || gc->pads[GC_DDR]) {
 429
 430                 gc_psx_read_packet(gc, data_psx, data);
 431
 432                 for (i = 0; i < 5; i++) {
 433                         switch (data[i]) {
 434
 435                                 case GC_PSX_RUMBLE:
 436
 437                                         input_report_key(dev + i, BTN_THUMBL, ~data_psx[i][0] & 0x04);
 438                                         input_report_key(dev + i, BTN_THUMBR, ~data_psx[i][0] & 0x02);
 439
 440                                 case GC_PSX_NEGCON:
 441                                 case GC_PSX_ANALOG:
 442
 443                                         if(gc->pads[GC_DDR] & gc_status_bit[i]) {
 444                                                 for(j = 0; j < 4; j++)
 445                                                         input_report_key(dev + i, gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
 446                                         } else {
 447                                                 for (j = 0; j < 4; j++)
 448                                                         input_report_abs(dev + i, gc_psx_abs[j+2], data_psx[i][j + 2]);
 449
 450                                                 input_report_abs(dev + i, ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
 451                                                 input_report_abs(dev + i, ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
 452                                         }
 453
 454                                         for (j = 0; j < 8; j++)
 455                                                 input_report_key(dev + i, gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
 456
 457                                         input_report_key(dev + i, BTN_START,  ~data_psx[i][0] & 0x08);
 458                                         input_report_key(dev + i, BTN_SELECT, ~data_psx[i][0] & 0x01);
 459
 460                                         input_sync(dev + i);
 461
 462                                         break;
 463
 464                                 case GC_PSX_NORMAL:
 465                                         if(gc->pads[GC_DDR] & gc_status_bit[i]) {
 466                                                 for(j = 0; j < 4; j++)
 467                                                         input_report_key(dev + i, gc_psx_ddr_btn[j], ~data_psx[i][0] & (0x10 << j));
 468                                         } else {
 469                                                 input_report_abs(dev + i, ABS_X, 128 + !(data_psx[i][0] & 0x20) * 127 - !(data_psx[i][0] & 0x80) * 128);
 470                                                 input_report_abs(dev + i, ABS_Y, 128 + !(data_psx[i][0] & 0x40) * 127 - !(data_psx[i][0] & 0x10) * 128);
 471
 472                                                 /* for some reason if the extra axes are left unset they drift */
 473                                                 /* for (j = 0; j < 4; j++)
 474                                                         input_report_abs(dev + i, gc_psx_abs[j+2], 128);
 475                                                  * This needs to be debugged properly,
 476                                                  * maybe fuzz processing needs to be done in input_sync()
 477                                                  *                               --vojtech
 478                                                  */
 479                                         }
 480
 481                                         for (j = 0; j < 8; j++)
 482                                                 input_report_key(dev + i, gc_psx_btn[j], ~data_psx[i][1] & (1 << j));
 483
 484                                         input_report_key(dev + i, BTN_START,  ~data_psx[i][0] & 0x08);
 485                                         input_report_key(dev + i, BTN_SELECT, ~data_psx[i][0] & 0x01);
 486
 487                                         input_sync(dev + i);
 488
 489                                         break;
 490
 491                                 case 0: /* not a pad, ignore */
 492                                         break;
 493                         }
 494                 }
 495         }
 496
 497         mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
 498 }
 499
 500 static int gc_open(struct input_dev *dev)
 501 {
 502         struct gc *gc = dev->private;
 503         if (!gc->used++) {
 504                 parport_claim(gc->pd);
 505                 parport_write_control(gc->pd->port, 0x04);
 506                 mod_timer(&gc->timer, jiffies + GC_REFRESH_TIME);
 507         }
 508         return 0;
 509 }
 510
 511 static void gc_close(struct input_dev *dev)
 512 {
 513         struct gc *gc = dev->private;
 514         if (!--gc->used) {
 515                 del_timer(&gc->timer);
 516                 parport_write_control(gc->pd->port, 0x00);
 517                 parport_release(gc->pd);
 518         }
 519 }
 520
 521 static struct gc __init *gc_probe(int *config, int nargs)
 522 {
 523         struct gc *gc;
 524         struct parport *pp;
 525         int i, j;
 526
 527         if (config[0] < 0)
 528                 return NULL;
 529
 530         if (nargs < 2) {
 531                 printk(KERN_ERR "gamecon.c: at least one device must be specified\n");
 532                 return NULL;
 533         }
 534
 535         pp = parport_find_number(config[0]);
 536
 537         if (!pp) {
 538                 printk(KERN_ERR "gamecon.c: no such parport\n");
 539                 return NULL;
 540         }
 541
 542         if (!(gc = kmalloc(sizeof(struct gc), GFP_KERNEL))) {
 543                 parport_put_port(pp);
 544                 return NULL;
 545         }
 546         memset(gc, 0, sizeof(struct gc));
 547
 548         gc->pd = parport_register_device(pp, "gamecon", NULL, NULL, NULL, PARPORT_DEV_EXCL, NULL);
 549
 550         parport_put_port(pp);
 551
 552         if (!gc->pd) {
 553                 printk(KERN_ERR "gamecon.c: parport busy already - lp.o loaded?\n");
 554                 kfree(gc);
 555                 return NULL;
 556         }
 557
 558         parport_claim(gc->pd);
 559
 560         init_timer(&gc->timer);
 561         gc->timer.data = (long) gc;
 562         gc->timer.function = gc_timer;
 563
 564         for (i = 0; i < nargs - 1; i++) {
 565
 566                 if (!config[i + 1])
 567                         continue;
 568
 569                 if (config[i + 1] < 1 || config[i + 1] > GC_MAX) {
 570                         printk(KERN_WARNING "gamecon.c: Pad type %d unknown\n", config[i + 1]);
 571                         continue;
 572                 }
 573
 574                 gc->dev[i].private = gc;
 575                 gc->dev[i].open = gc_open;
 576                 gc->dev[i].close = gc_close;
 577
 578                 gc->dev[i].evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 579
 580                 for (j = 0; j < 2; j++) {
 581                         set_bit(ABS_X + j, gc->dev[i].absbit);
 582                         gc->dev[i].absmin[ABS_X + j] = -1;
 583                         gc->dev[i].absmax[ABS_X + j] =  1;
 584                 }
 585
 586                 gc->pads[0] |= gc_status_bit[i];
 587                 gc->pads[config[i + 1]] |= gc_status_bit[i];
 588
 589                 switch(config[i + 1]) {
 590
 591                         case GC_N64:
 592                                 for (j = 0; j < 10; j++)
 593                                         set_bit(gc_n64_btn[j], gc->dev[i].keybit);
 594
 595                                 for (j = 0; j < 2; j++) {
 596                                         set_bit(ABS_X + j, gc->dev[i].absbit);
 597                                         gc->dev[i].absmin[ABS_X + j] = -127;
 598                                         gc->dev[i].absmax[ABS_X + j] =  126;
 599                                         gc->dev[i].absflat[ABS_X + j] = 2;
 600                                         set_bit(ABS_HAT0X + j, gc->dev[i].absbit);
 601                                         gc->dev[i].absmin[ABS_HAT0X + j] = -1;
 602                                         gc->dev[i].absmax[ABS_HAT0X + j] =  1;
 603                                 }
 604
 605                                 break;
 606
 607                         case GC_SNES:
 608                                 for (j = 4; j < 8; j++)
 609                                         set_bit(gc_snes_btn[j], gc->dev[i].keybit);
 610                         case GC_NES:
 611                                 for (j = 0; j < 4; j++)
 612                                         set_bit(gc_snes_btn[j], gc->dev[i].keybit);
 613                                 break;
 614
 615                         case GC_MULTI2:
 616                                 set_bit(BTN_THUMB, gc->dev[i].keybit);
 617                         case GC_MULTI:
 618                                 set_bit(BTN_TRIGGER, gc->dev[i].keybit);
 619                                 break;
 620
 621                         case GC_PSX:
 622                         case GC_DDR:
 623                                 if(config[i + 1] == GC_DDR) {
 624                                         for (j = 0; j < 4; j++)
 625                                                 set_bit(gc_psx_ddr_btn[j], gc->dev[i].keybit);
 626                                 } else {
 627                                         for (j = 0; j < 6; j++) {
 628                                                 set_bit(gc_psx_abs[j], gc->dev[i].absbit);
 629                                                 gc->dev[i].absmin[gc_psx_abs[j]] = 4;
 630                                                 gc->dev[i].absmax[gc_psx_abs[j]] = 252;
 631                                                 gc->dev[i].absflat[gc_psx_abs[j]] = 2;
 632                                         }
 633                                 }
 634
 635                                 for (j = 0; j < 12; j++)
 636                                         set_bit(gc_psx_btn[j], gc->dev[i].keybit);
 637
 638                                 break;
 639                 }
 640
 641                 sprintf(gc->phys[i], "%s/input%d", gc->pd->port->name, i);
 642
 643                 gc->dev[i].name = gc_names[config[i + 1]];
 644                 gc->dev[i].phys = gc->phys[i];
 645                 gc->dev[i].id.bustype = BUS_PARPORT;
 646                 gc->dev[i].id.vendor = 0x0001;
 647                 gc->dev[i].id.product = config[i + 1];
 648                 gc->dev[i].id.version = 0x0100;
 649         }
 650
 651         parport_release(gc->pd);
 652
 653         if (!gc->pads[0]) {
 654                 parport_unregister_device(gc->pd);
 655                 kfree(gc);
 656                 return NULL;
 657         }
 658
 659         for (i = 0; i < 5; i++)
 660                 if (gc->pads[0] & gc_status_bit[i]) {
 661                         input_register_device(gc->dev + i);
 662                         printk(KERN_INFO "input: %s on %s\n", gc->dev[i].name, gc->pd->port->name);
 663                 }
 664
 665         return gc;
 666 }
 667
 668 int __init gc_init(void)
 669 {
 670         gc_base[0] = gc_probe(gc, gc_nargs);
 671         gc_base[1] = gc_probe(gc_2, gc_nargs_2);
 672         gc_base[2] = gc_probe(gc_3, gc_nargs_3);
 673
 674         if (gc_base[0] || gc_base[1] || gc_base[2])
 675                 return 0;
 676
 677         return -ENODEV;
 678 }
 679
 680 void __exit gc_exit(void)
 681 {
 682         int i, j;
 683
 684         for (i = 0; i < 3; i++)
 685                 if (gc_base[i]) {
 686                         for (j = 0; j < 5; j++)
 687                                 if (gc_base[i]->pads[0] & gc_status_bit[j])
 688                                         input_unregister_device(gc_base[i]->dev + j);
 689                         parport_unregister_device(gc_base[i]->pd);
 690                 }
 691 }
 692
 693 module_init(gc_init);
 694 module_exit(gc_exit);