drivers/input/joystick/db9.c

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This source file includes following definitions.
db9_saturn_write_sub
db9_saturn_read_sub
db9_saturn_read_analog
db9_saturn_read_packet
db9_saturn_report
db9_saturn
db9_timer
db9_open
db9_close
db9_attach
db9_detach
db9_init
db9_exit
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (c) 1999-2001 Vojtech Pavlik
   4  *
   5  *  Based on the work of:
   6  *      Andree Borrmann         Mats Sjövall
   7  */
   8 
   9 /*
  10  * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux
  11  */
  12 
  13 /*
  14  */
  15 
  16 #include <linux/kernel.h>
  17 #include <linux/module.h>
  18 #include <linux/delay.h>
  19 #include <linux/init.h>
  20 #include <linux/parport.h>
  21 #include <linux/input.h>
  22 #include <linux/mutex.h>
  23 #include <linux/slab.h>
  24 
  25 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  26 MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver");
  27 MODULE_LICENSE("GPL");
  28 
  29 struct db9_config {
  30         int args[2];
  31         unsigned int nargs;
  32 };
  33 
  34 #define DB9_MAX_PORTS           3
  35 static struct db9_config db9_cfg[DB9_MAX_PORTS];
  36 
  37 module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0);
  38 MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)");
  39 module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0);
  40 MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)");
  41 module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0);
  42 MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)");
  43 
  44 #define DB9_ARG_PARPORT         0
  45 #define DB9_ARG_MODE            1
  46 
  47 #define DB9_MULTI_STICK         0x01
  48 #define DB9_MULTI2_STICK        0x02
  49 #define DB9_GENESIS_PAD         0x03
  50 #define DB9_GENESIS5_PAD        0x05
  51 #define DB9_GENESIS6_PAD        0x06
  52 #define DB9_SATURN_PAD          0x07
  53 #define DB9_MULTI_0802          0x08
  54 #define DB9_MULTI_0802_2        0x09
  55 #define DB9_CD32_PAD            0x0A
  56 #define DB9_SATURN_DPP          0x0B
  57 #define DB9_SATURN_DPP_2        0x0C
  58 #define DB9_MAX_PAD             0x0D
  59 
  60 #define DB9_UP                  0x01
  61 #define DB9_DOWN                0x02
  62 #define DB9_LEFT                0x04
  63 #define DB9_RIGHT               0x08
  64 #define DB9_FIRE1               0x10
  65 #define DB9_FIRE2               0x20
  66 #define DB9_FIRE3               0x40
  67 #define DB9_FIRE4               0x80
  68 
  69 #define DB9_NORMAL              0x0a
  70 #define DB9_NOSELECT            0x08
  71 
  72 #define DB9_GENESIS6_DELAY      14
  73 #define DB9_REFRESH_TIME        HZ/100
  74 
  75 #define DB9_MAX_DEVICES         2
  76 
  77 struct db9_mode_data {
  78         const char *name;
  79         const short *buttons;
  80         int n_buttons;
  81         int n_pads;
  82         int n_axis;
  83         int bidirectional;
  84         int reverse;
  85 };
  86 
  87 struct db9 {
  88         struct input_dev *dev[DB9_MAX_DEVICES];
  89         struct timer_list timer;
  90         struct pardevice *pd;
  91         int mode;
  92         int used;
  93         int parportno;
  94         struct mutex mutex;
  95         char phys[DB9_MAX_DEVICES][32];
  96 };
  97 
  98 static struct db9 *db9_base[3];
  99 
 100 static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB };
 101 static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE };
 102 static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START };
 103 static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
 104 
 105 static const struct db9_mode_data db9_modes[] = {
 106         { NULL,                                  NULL,            0,  0,  0,  0,  0 },
 107         { "Multisystem joystick",                db9_multi_btn,   1,  1,  2,  1,  1 },
 108         { "Multisystem joystick (2 fire)",       db9_multi_btn,   2,  1,  2,  1,  1 },
 109         { "Genesis pad",                         db9_genesis_btn, 4,  1,  2,  1,  1 },
 110         { NULL,                                  NULL,            0,  0,  0,  0,  0 },
 111         { "Genesis 5 pad",                       db9_genesis_btn, 6,  1,  2,  1,  1 },
 112         { "Genesis 6 pad",                       db9_genesis_btn, 8,  1,  2,  1,  1 },
 113         { "Saturn pad",                          db9_cd32_btn,    9,  6,  7,  0,  1 },
 114         { "Multisystem (0.8.0.2) joystick",      db9_multi_btn,   1,  1,  2,  1,  1 },
 115         { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn,   1,  2,  2,  1,  1 },
 116         { "Amiga CD-32 pad",                     db9_cd32_btn,    7,  1,  2,  1,  1 },
 117         { "Saturn dpp",                          db9_cd32_btn,    9,  6,  7,  0,  0 },
 118         { "Saturn dpp dual",                     db9_cd32_btn,    9,  12, 7,  0,  0 },
 119 };
 120 
 121 /*
 122  * Saturn controllers
 123  */
 124 #define DB9_SATURN_DELAY 300
 125 static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 };
 126 static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 };
 127 
 128 /*
 129  * db9_saturn_write_sub() writes 2 bit data.
 130  */
 131 static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub)
 132 {
 133         unsigned char c;
 134 
 135         switch (type) {
 136         case 1: /* DPP1 */
 137                 c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data;
 138                 parport_write_data(port, c);
 139                 break;
 140         case 2: /* DPP2 */
 141                 c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03;
 142                 parport_write_data(port, c);
 143                 break;
 144         case 0: /* DB9 */
 145                 c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered;
 146                 parport_write_control(port, c);
 147                 break;
 148         }
 149 }
 150 
 151 /*
 152  * gc_saturn_read_sub() reads 4 bit data.
 153  */
 154 static unsigned char db9_saturn_read_sub(struct parport *port, int type)
 155 {
 156         unsigned char data;
 157 
 158         if (type) {
 159                 /* DPP */
 160                 data = parport_read_status(port) ^ 0x80;
 161                 return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0)
 162                      | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0);
 163         } else {
 164                 /* DB9 */
 165                 data = parport_read_data(port) & 0x0f;
 166                 return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0)
 167                      | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0);
 168         }
 169 }
 170 
 171 /*
 172  * db9_saturn_read_analog() sends clock and reads 8 bit data.
 173  */
 174 static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered)
 175 {
 176         unsigned char data;
 177 
 178         db9_saturn_write_sub(port, type, 0, powered, 0);
 179         udelay(DB9_SATURN_DELAY);
 180         data = db9_saturn_read_sub(port, type) << 4;
 181         db9_saturn_write_sub(port, type, 2, powered, 0);
 182         udelay(DB9_SATURN_DELAY);
 183         data |= db9_saturn_read_sub(port, type);
 184         return data;
 185 }
 186 
 187 /*
 188  * db9_saturn_read_packet() reads whole saturn packet at connector
 189  * and returns device identifier code.
 190  */
 191 static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered)
 192 {
 193         int i, j;
 194         unsigned char tmp;
 195 
 196         db9_saturn_write_sub(port, type, 3, powered, 0);
 197         data[0] = db9_saturn_read_sub(port, type);
 198         switch (data[0] & 0x0f) {
 199         case 0xf:
 200                 /* 1111  no pad */
 201                 return data[0] = 0xff;
 202         case 0x4: case 0x4 | 0x8:
 203                 /* ?100 : digital controller */
 204                 db9_saturn_write_sub(port, type, 0, powered, 1);
 205                 data[2] = db9_saturn_read_sub(port, type) << 4;
 206                 db9_saturn_write_sub(port, type, 2, powered, 1);
 207                 data[1] = db9_saturn_read_sub(port, type) << 4;
 208                 db9_saturn_write_sub(port, type, 1, powered, 1);
 209                 data[1] |= db9_saturn_read_sub(port, type);
 210                 db9_saturn_write_sub(port, type, 3, powered, 1);
 211                 /* data[2] |= db9_saturn_read_sub(port, type); */
 212                 data[2] |= data[0];
 213                 return data[0] = 0x02;
 214         case 0x1:
 215                 /* 0001 : analog controller or multitap */
 216                 db9_saturn_write_sub(port, type, 2, powered, 0);
 217                 udelay(DB9_SATURN_DELAY);
 218                 data[0] = db9_saturn_read_analog(port, type, powered);
 219                 if (data[0] != 0x41) {
 220                         /* read analog controller */
 221                         for (i = 0; i < (data[0] & 0x0f); i++)
 222                                 data[i + 1] = db9_saturn_read_analog(port, type, powered);
 223                         db9_saturn_write_sub(port, type, 3, powered, 0);
 224                         return data[0];
 225                 } else {
 226                         /* read multitap */
 227                         if (db9_saturn_read_analog(port, type, powered) != 0x60)
 228                                 return data[0] = 0xff;
 229                         for (i = 0; i < 60; i += 10) {
 230                                 data[i] = db9_saturn_read_analog(port, type, powered);
 231                                 if (data[i] != 0xff)
 232                                         /* read each pad */
 233                                         for (j = 0; j < (data[i] & 0x0f); j++)
 234                                                 data[i + j + 1] = db9_saturn_read_analog(port, type, powered);
 235                         }
 236                         db9_saturn_write_sub(port, type, 3, powered, 0);
 237                         return 0x41;
 238                 }
 239         case 0x0:
 240                 /* 0000 : mouse */
 241                 db9_saturn_write_sub(port, type, 2, powered, 0);
 242                 udelay(DB9_SATURN_DELAY);
 243                 tmp = db9_saturn_read_analog(port, type, powered);
 244                 if (tmp == 0xff) {
 245                         for (i = 0; i < 3; i++)
 246                                 data[i + 1] = db9_saturn_read_analog(port, type, powered);
 247                         db9_saturn_write_sub(port, type, 3, powered, 0);
 248                         return data[0] = 0xe3;
 249                 }
 250                 /* fall through */
 251         default:
 252                 return data[0];
 253         }
 254 }
 255 
 256 /*
 257  * db9_saturn_report() analyzes packet and reports.
 258  */
 259 static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
 260 {
 261         struct input_dev *dev;
 262         int tmp, i, j;
 263 
 264         tmp = (id == 0x41) ? 60 : 10;
 265         for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
 266                 dev = devs[n];
 267                 switch (data[j]) {
 268                 case 0x16: /* multi controller (analog 4 axis) */
 269                         input_report_abs(dev, db9_abs[5], data[j + 6]);
 270                         /* fall through */
 271                 case 0x15: /* mission stick (analog 3 axis) */
 272                         input_report_abs(dev, db9_abs[3], data[j + 4]);
 273                         input_report_abs(dev, db9_abs[4], data[j + 5]);
 274                         /* fall through */
 275                 case 0x13: /* racing controller (analog 1 axis) */
 276                         input_report_abs(dev, db9_abs[2], data[j + 3]);
 277                         /* fall through */
 278                 case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
 279                 case 0x02: /* digital pad (digital 2 axis + buttons) */
 280                         input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
 281                         input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
 282                         for (i = 0; i < 9; i++)
 283                                 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
 284                         break;
 285                 case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
 286                         input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
 287                         input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
 288                         for (i = 0; i < 9; i++)
 289                                 input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
 290                         input_report_abs(dev, db9_abs[2], data[j + 3]);
 291                         input_report_abs(dev, db9_abs[3], data[j + 4]);
 292                         input_report_abs(dev, db9_abs[4], data[j + 5]);
 293                         /*
 294                         input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
 295                         input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
 296                         */
 297                         input_report_abs(dev, db9_abs[6], data[j + 7]);
 298                         input_report_abs(dev, db9_abs[7], data[j + 8]);
 299                         input_report_abs(dev, db9_abs[5], data[j + 9]);
 300                         break;
 301                 case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
 302                         input_report_key(dev, BTN_A, data[j + 3] & 0x80);
 303                         input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
 304                         break;
 305                 case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
 306                         input_report_key(dev, BTN_START, data[j + 1] & 0x08);
 307                         input_report_key(dev, BTN_A, data[j + 1] & 0x04);
 308                         input_report_key(dev, BTN_C, data[j + 1] & 0x02);
 309                         input_report_key(dev, BTN_B, data[j + 1] & 0x01);
 310                         input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
 311                         input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
 312                         break;
 313                 case 0xff:
 314                 default: /* no pad */
 315                         input_report_abs(dev, db9_abs[0], 0);
 316                         input_report_abs(dev, db9_abs[1], 0);
 317                         for (i = 0; i < 9; i++)
 318                                 input_report_key(dev, db9_cd32_btn[i], 0);
 319                         break;
 320                 }
 321         }
 322         return n;
 323 }
 324 
 325 static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
 326 {
 327         unsigned char id, data[60];
 328         int type, n, max_pads;
 329         int tmp, i;
 330 
 331         switch (mode) {
 332         case DB9_SATURN_PAD:
 333                 type = 0;
 334                 n = 1;
 335                 break;
 336         case DB9_SATURN_DPP:
 337                 type = 1;
 338                 n = 1;
 339                 break;
 340         case DB9_SATURN_DPP_2:
 341                 type = 1;
 342                 n = 2;
 343                 break;
 344         default:
 345                 return -1;
 346         }
 347         max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
 348         for (tmp = 0, i = 0; i < n; i++) {
 349                 id = db9_saturn_read_packet(port, data, type + i, 1);
 350                 tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
 351         }
 352         return 0;
 353 }
 354 
 355 static void db9_timer(struct timer_list *t)
 356 {
 357         struct db9 *db9 = from_timer(db9, t, timer);
 358         struct parport *port = db9->pd->port;
 359         struct input_dev *dev = db9->dev[0];
 360         struct input_dev *dev2 = db9->dev[1];
 361         int data, i;
 362 
 363         switch (db9->mode) {
 364                 case DB9_MULTI_0802_2:
 365 
 366                         data = parport_read_data(port) >> 3;
 367 
 368                         input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 369                         input_report_abs(dev2, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 370                         input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1);
 371                         /* fall through */
 372 
 373                 case DB9_MULTI_0802:
 374 
 375                         data = parport_read_status(port) >> 3;
 376 
 377                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 378                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 379                         input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1);
 380                         break;
 381 
 382                 case DB9_MULTI_STICK:
 383 
 384                         data = parport_read_data(port);
 385 
 386                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 387                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 388                         input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
 389                         break;
 390 
 391                 case DB9_MULTI2_STICK:
 392 
 393                         data = parport_read_data(port);
 394 
 395                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 396                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 397                         input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1);
 398                         input_report_key(dev, BTN_THUMB,   ~data & DB9_FIRE2);
 399                         break;
 400 
 401                 case DB9_GENESIS_PAD:
 402 
 403                         parport_write_control(port, DB9_NOSELECT);
 404                         data = parport_read_data(port);
 405 
 406                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 407                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 408                         input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
 409                         input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
 410 
 411                         parport_write_control(port, DB9_NORMAL);
 412                         data = parport_read_data(port);
 413 
 414                         input_report_key(dev, BTN_A,     ~data & DB9_FIRE1);
 415                         input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
 416                         break;
 417 
 418                 case DB9_GENESIS5_PAD:
 419 
 420                         parport_write_control(port, DB9_NOSELECT);
 421                         data = parport_read_data(port);
 422 
 423                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 424                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 425                         input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
 426                         input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
 427 
 428                         parport_write_control(port, DB9_NORMAL);
 429                         data = parport_read_data(port);
 430 
 431                         input_report_key(dev, BTN_A,     ~data & DB9_FIRE1);
 432                         input_report_key(dev, BTN_X,     ~data & DB9_FIRE2);
 433                         input_report_key(dev, BTN_Y,     ~data & DB9_LEFT);
 434                         input_report_key(dev, BTN_START, ~data & DB9_RIGHT);
 435                         break;
 436 
 437                 case DB9_GENESIS6_PAD:
 438 
 439                         parport_write_control(port, DB9_NOSELECT); /* 1 */
 440                         udelay(DB9_GENESIS6_DELAY);
 441                         data = parport_read_data(port);
 442 
 443                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 444                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 445                         input_report_key(dev, BTN_B, ~data & DB9_FIRE1);
 446                         input_report_key(dev, BTN_C, ~data & DB9_FIRE2);
 447 
 448                         parport_write_control(port, DB9_NORMAL);
 449                         udelay(DB9_GENESIS6_DELAY);
 450                         data = parport_read_data(port);
 451 
 452                         input_report_key(dev, BTN_A, ~data & DB9_FIRE1);
 453                         input_report_key(dev, BTN_START, ~data & DB9_FIRE2);
 454 
 455                         parport_write_control(port, DB9_NOSELECT); /* 2 */
 456                         udelay(DB9_GENESIS6_DELAY);
 457                         parport_write_control(port, DB9_NORMAL);
 458                         udelay(DB9_GENESIS6_DELAY);
 459                         parport_write_control(port, DB9_NOSELECT); /* 3 */
 460                         udelay(DB9_GENESIS6_DELAY);
 461                         data=parport_read_data(port);
 462 
 463                         input_report_key(dev, BTN_X,    ~data & DB9_LEFT);
 464                         input_report_key(dev, BTN_Y,    ~data & DB9_DOWN);
 465                         input_report_key(dev, BTN_Z,    ~data & DB9_UP);
 466                         input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT);
 467 
 468                         parport_write_control(port, DB9_NORMAL);
 469                         udelay(DB9_GENESIS6_DELAY);
 470                         parport_write_control(port, DB9_NOSELECT); /* 4 */
 471                         udelay(DB9_GENESIS6_DELAY);
 472                         parport_write_control(port, DB9_NORMAL);
 473                         break;
 474 
 475                 case DB9_SATURN_PAD:
 476                 case DB9_SATURN_DPP:
 477                 case DB9_SATURN_DPP_2:
 478 
 479                         db9_saturn(db9->mode, port, db9->dev);
 480                         break;
 481 
 482                 case DB9_CD32_PAD:
 483 
 484                         data = parport_read_data(port);
 485 
 486                         input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1));
 487                         input_report_abs(dev, ABS_Y, (data & DB9_DOWN  ? 0 : 1) - (data & DB9_UP   ? 0 : 1));
 488 
 489                         parport_write_control(port, 0x0a);
 490 
 491                         for (i = 0; i < 7; i++) {
 492                                 data = parport_read_data(port);
 493                                 parport_write_control(port, 0x02);
 494                                 parport_write_control(port, 0x0a);
 495                                 input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2);
 496                         }
 497 
 498                         parport_write_control(port, 0x00);
 499                         break;
 500                 }
 501 
 502         input_sync(dev);
 503 
 504         mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
 505 }
 506 
 507 static int db9_open(struct input_dev *dev)
 508 {
 509         struct db9 *db9 = input_get_drvdata(dev);
 510         struct parport *port = db9->pd->port;
 511         int err;
 512 
 513         err = mutex_lock_interruptible(&db9->mutex);
 514         if (err)
 515                 return err;
 516 
 517         if (!db9->used++) {
 518                 parport_claim(db9->pd);
 519                 parport_write_data(port, 0xff);
 520                 if (db9_modes[db9->mode].reverse) {
 521                         parport_data_reverse(port);
 522                         parport_write_control(port, DB9_NORMAL);
 523                 }
 524                 mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME);
 525         }
 526 
 527         mutex_unlock(&db9->mutex);
 528         return 0;
 529 }
 530 
 531 static void db9_close(struct input_dev *dev)
 532 {
 533         struct db9 *db9 = input_get_drvdata(dev);
 534         struct parport *port = db9->pd->port;
 535 
 536         mutex_lock(&db9->mutex);
 537         if (!--db9->used) {
 538                 del_timer_sync(&db9->timer);
 539                 parport_write_control(port, 0x00);
 540                 parport_data_forward(port);
 541                 parport_release(db9->pd);
 542         }
 543         mutex_unlock(&db9->mutex);
 544 }
 545 
 546 static void db9_attach(struct parport *pp)
 547 {
 548         struct db9 *db9;
 549         const struct db9_mode_data *db9_mode;
 550         struct pardevice *pd;
 551         struct input_dev *input_dev;
 552         int i, j, port_idx;
 553         int mode;
 554         struct pardev_cb db9_parport_cb;
 555 
 556         for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) {
 557                 if (db9_cfg[port_idx].nargs == 0 ||
 558                     db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0)
 559                         continue;
 560 
 561                 if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number)
 562                         break;
 563         }
 564 
 565         if (port_idx == DB9_MAX_PORTS) {
 566                 pr_debug("Not using parport%d.\n", pp->number);
 567                 return;
 568         }
 569 
 570         mode = db9_cfg[port_idx].args[DB9_ARG_MODE];
 571 
 572         if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) {
 573                 printk(KERN_ERR "db9.c: Bad device type %d\n", mode);
 574                 return;
 575         }
 576 
 577         db9_mode = &db9_modes[mode];
 578 
 579         if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) {
 580                 printk(KERN_ERR "db9.c: specified parport is not bidirectional\n");
 581                 return;
 582         }
 583 
 584         memset(&db9_parport_cb, 0, sizeof(db9_parport_cb));
 585         db9_parport_cb.flags = PARPORT_FLAG_EXCL;
 586 
 587         pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx);
 588         if (!pd) {
 589                 printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n");
 590                 return;
 591         }
 592 
 593         db9 = kzalloc(sizeof(struct db9), GFP_KERNEL);
 594         if (!db9)
 595                 goto err_unreg_pardev;
 596 
 597         mutex_init(&db9->mutex);
 598         db9->pd = pd;
 599         db9->mode = mode;
 600         db9->parportno = pp->number;
 601         timer_setup(&db9->timer, db9_timer, 0);
 602 
 603         for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) {
 604 
 605                 db9->dev[i] = input_dev = input_allocate_device();
 606                 if (!input_dev) {
 607                         printk(KERN_ERR "db9.c: Not enough memory for input device\n");
 608                         goto err_unreg_devs;
 609                 }
 610 
 611                 snprintf(db9->phys[i], sizeof(db9->phys[i]),
 612                          "%s/input%d", db9->pd->port->name, i);
 613 
 614                 input_dev->name = db9_mode->name;
 615                 input_dev->phys = db9->phys[i];
 616                 input_dev->id.bustype = BUS_PARPORT;
 617                 input_dev->id.vendor = 0x0002;
 618                 input_dev->id.product = mode;
 619                 input_dev->id.version = 0x0100;
 620 
 621                 input_set_drvdata(input_dev, db9);
 622 
 623                 input_dev->open = db9_open;
 624                 input_dev->close = db9_close;
 625 
 626                 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 627                 for (j = 0; j < db9_mode->n_buttons; j++)
 628                         set_bit(db9_mode->buttons[j], input_dev->keybit);
 629                 for (j = 0; j < db9_mode->n_axis; j++) {
 630                         if (j < 2)
 631                                 input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0);
 632                         else
 633                                 input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0);
 634                 }
 635 
 636                 if (input_register_device(input_dev))
 637                         goto err_free_dev;
 638         }
 639 
 640         db9_base[port_idx] = db9;
 641         return;
 642 
 643  err_free_dev:
 644         input_free_device(db9->dev[i]);
 645  err_unreg_devs:
 646         while (--i >= 0)
 647                 input_unregister_device(db9->dev[i]);
 648         kfree(db9);
 649  err_unreg_pardev:
 650         parport_unregister_device(pd);
 651 }
 652 
 653 static void db9_detach(struct parport *port)
 654 {
 655         int i;
 656         struct db9 *db9;
 657 
 658         for (i = 0; i < DB9_MAX_PORTS; i++) {
 659                 if (db9_base[i] && db9_base[i]->parportno == port->number)
 660                         break;
 661         }
 662 
 663         if (i == DB9_MAX_PORTS)
 664                 return;
 665 
 666         db9 = db9_base[i];
 667         db9_base[i] = NULL;
 668 
 669         for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++)
 670                 input_unregister_device(db9->dev[i]);
 671         parport_unregister_device(db9->pd);
 672         kfree(db9);
 673 }
 674 
 675 static struct parport_driver db9_parport_driver = {
 676         .name = "db9",
 677         .match_port = db9_attach,
 678         .detach = db9_detach,
 679         .devmodel = true,
 680 };
 681 
 682 static int __init db9_init(void)
 683 {
 684         int i;
 685         int have_dev = 0;
 686 
 687         for (i = 0; i < DB9_MAX_PORTS; i++) {
 688                 if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0)
 689                         continue;
 690 
 691                 if (db9_cfg[i].nargs < 2) {
 692                         printk(KERN_ERR "db9.c: Device type must be specified.\n");
 693                         return -EINVAL;
 694                 }
 695 
 696                 have_dev = 1;
 697         }
 698 
 699         if (!have_dev)
 700                 return -ENODEV;
 701 
 702         return parport_register_driver(&db9_parport_driver);
 703 }
 704 
 705 static void __exit db9_exit(void)
 706 {
 707         parport_unregister_driver(&db9_parport_driver);
 708 }
 709 
 710 module_init(db9_init);
 711 module_exit(db9_exit);
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/input/joystick/db9.c

DEFINITIONS
