drivers/input/joystick/tmdc.c

   1 /*
   2  *  Copyright (c) 1998-2001 Vojtech Pavlik
   3  *
   4  *   Based on the work of:
   5  *      Trystan Larey-Williams
   6  */
   7
   8 /*
   9  * ThrustMaster DirectConnect (BSP) joystick family driver for Linux
  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/delay.h>
  33 #include <linux/kernel.h>
  34 #include <linux/slab.h>
  35 #include <linux/module.h>
  36 #include <linux/gameport.h>
  37 #include <linux/input.h>
  38 #include <linux/jiffies.h>
  39
  40 #define DRIVER_DESC     "ThrustMaster DirectConnect joystick driver"
  41
  42 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  43 MODULE_DESCRIPTION(DRIVER_DESC);
  44 MODULE_LICENSE("GPL");
  45
  46 #define TMDC_MAX_START          600     /* 600 us */
  47 #define TMDC_MAX_STROBE         60      /* 60 us */
  48 #define TMDC_MAX_LENGTH         13
  49
  50 #define TMDC_MODE_M3DI          1
  51 #define TMDC_MODE_3DRP          3
  52 #define TMDC_MODE_AT            4
  53 #define TMDC_MODE_FM            8
  54 #define TMDC_MODE_FGP           163
  55
  56 #define TMDC_BYTE_ID            10
  57 #define TMDC_BYTE_REV           11
  58 #define TMDC_BYTE_DEF           12
  59
  60 #define TMDC_ABS                7
  61 #define TMDC_ABS_HAT            4
  62 #define TMDC_BTN                16
  63
  64 static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
  65 static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
  66
  67 static const signed char tmdc_abs[TMDC_ABS] =
  68         { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
  69 static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
  70         { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
  71 static const signed char tmdc_abs_at[TMDC_ABS] =
  72         { ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
  73 static const signed char tmdc_abs_fm[TMDC_ABS] =
  74         { ABS_RX, ABS_RY, ABS_X, ABS_Y };
  75
  76 static const short tmdc_btn_pad[TMDC_BTN] =
  77         { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
  78 static const short tmdc_btn_joy[TMDC_BTN] =
  79         { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
  80           BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
  81 static const short tmdc_btn_fm[TMDC_BTN] =
  82         { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
  83 static const short tmdc_btn_at[TMDC_BTN] =
  84         { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
  85           BTN_BASE3, BTN_BASE2, BTN_BASE };
  86
  87 static const struct {
  88         int x;
  89         int y;
  90 } tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
  91
  92 static const struct tmdc_model {
  93         unsigned char id;
  94         const char *name;
  95         char abs;
  96         char hats;
  97         char btnc[4];
  98         char btno[4];
  99         const signed char *axes;
 100         const short *buttons;
 101 } tmdc_models[] = {
 102         {   1, "ThrustMaster Millenium 3D Inceptor",      6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
 103         {   3, "ThrustMaster Rage 3D Gamepad",            2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
 104         {   4, "ThrustMaster Attack Throttle",            5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
 105         {   8, "ThrustMaster FragMaster",                 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
 106         { 163, "Thrustmaster Fusion GamePad",             2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
 107         {   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
 108 };
 109
 110
 111 struct tmdc_port {
 112         struct input_dev *dev;
 113         char name[64];
 114         char phys[32];
 115         int mode;
 116         const signed char *abs;
 117         const short *btn;
 118         unsigned char absc;
 119         unsigned char btnc[4];
 120         unsigned char btno[4];
 121 };
 122
 123 struct tmdc {
 124         struct gameport *gameport;
 125         struct tmdc_port *port[2];
 126 #if 0
 127         struct input_dev *dev[2];
 128         char name[2][64];
 129         char phys[2][32];
 130         int mode[2];
 131         signed char *abs[2];
 132         short *btn[2];
 133         unsigned char absc[2];
 134         unsigned char btnc[2][4];
 135         unsigned char btno[2][4];
 136 #endif
 137         int reads;
 138         int bads;
 139         unsigned char exists;
 140 };
 141
 142 /*
 143  * tmdc_read_packet() reads a ThrustMaster packet.
 144  */
 145
 146 static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
 147 {
 148         unsigned char u, v, w, x;
 149         unsigned long flags;
 150         int i[2], j[2], t[2], p, k;
 151
 152         p = gameport_time(gameport, TMDC_MAX_STROBE);
 153
 154         for (k = 0; k < 2; k++) {
 155                 t[k] = gameport_time(gameport, TMDC_MAX_START);
 156                 i[k] = j[k] = 0;
 157         }
 158
 159         local_irq_save(flags);
 160         gameport_trigger(gameport);
 161
 162         w = gameport_read(gameport) >> 4;
 163
 164         do {
 165                 x = w;
 166                 w = gameport_read(gameport) >> 4;
 167
 168                 for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
 169                         if (~v & u & 2) {
 170                                 if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
 171                                 t[k] = p;
 172                                 if (j[k] == 0) {                                 /* Start bit */
 173                                         if (~v & 1) t[k] = 0;
 174                                         data[k][i[k]] = 0; j[k]++; continue;
 175                                 }
 176                                 if (j[k] == 9) {                                /* Stop bit */
 177                                         if (v & 1) t[k] = 0;
 178                                         j[k] = 0; i[k]++; continue;
 179                                 }
 180                                 data[k][i[k]] |= (~v & 1) << (j[k]++ - 1);      /* Data bit */
 181                         }
 182                         t[k]--;
 183                 }
 184         } while (t[0] > 0 || t[1] > 0);
 185
 186         local_irq_restore(flags);
 187
 188         return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
 189 }
 190
 191 static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
 192 {
 193         int i, k, l;
 194
 195         if (data[TMDC_BYTE_ID] != port->mode)
 196                 return -1;
 197
 198         for (i = 0; i < port->absc; i++) {
 199                 if (port->abs[i] < 0)
 200                         return 0;
 201
 202                 input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
 203         }
 204
 205         switch (port->mode) {
 206
 207                 case TMDC_MODE_M3DI:
 208
 209                         i = tmdc_byte_d[0];
 210                         input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
 211                         input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i]       & 1));
 212                         break;
 213
 214                 case TMDC_MODE_AT:
 215
 216                         i = tmdc_byte_a[3];
 217                         input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
 218                         input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
 219                         break;
 220
 221         }
 222
 223         for (k = l = 0; k < 4; k++) {
 224                 for (i = 0; i < port->btnc[k]; i++)
 225                         input_report_key(port->dev, port->btn[i + l],
 226                                 ((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
 227                 l += port->btnc[k];
 228         }
 229
 230         input_sync(port->dev);
 231
 232         return 0;
 233 }
 234
 235 /*
 236  * tmdc_poll() reads and analyzes ThrustMaster joystick data.
 237  */
 238
 239 static void tmdc_poll(struct gameport *gameport)
 240 {
 241         unsigned char data[2][TMDC_MAX_LENGTH];
 242         struct tmdc *tmdc = gameport_get_drvdata(gameport);
 243         unsigned char r, bad = 0;
 244         int i;
 245
 246         tmdc->reads++;
 247
 248         if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
 249                 bad = 1;
 250         else {
 251                 for (i = 0; i < 2; i++) {
 252                         if (r & (1 << i) & tmdc->exists) {
 253
 254                                 if (tmdc_parse_packet(tmdc->port[i], data[i]))
 255                                         bad = 1;
 256                         }
 257                 }
 258         }
 259
 260         tmdc->bads += bad;
 261 }
 262
 263 static int tmdc_open(struct input_dev *dev)
 264 {
 265         struct tmdc *tmdc = input_get_drvdata(dev);
 266
 267         gameport_start_polling(tmdc->gameport);
 268         return 0;
 269 }
 270
 271 static void tmdc_close(struct input_dev *dev)
 272 {
 273         struct tmdc *tmdc = input_get_drvdata(dev);
 274
 275         gameport_stop_polling(tmdc->gameport);
 276 }
 277
 278 static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
 279 {
 280         const struct tmdc_model *model;
 281         struct tmdc_port *port;
 282         struct input_dev *input_dev;
 283         int i, j, b = 0;
 284         int err;
 285
 286         tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
 287         input_dev = input_allocate_device();
 288         if (!port || !input_dev) {
 289                 err = -ENOMEM;
 290                 goto fail;
 291         }
 292
 293         port->mode = data[TMDC_BYTE_ID];
 294
 295         for (model = tmdc_models; model->id && model->id != port->mode; model++)
 296                 /* empty */;
 297
 298         port->abs = model->axes;
 299         port->btn = model->buttons;
 300
 301         if (!model->id) {
 302                 port->absc = data[TMDC_BYTE_DEF] >> 4;
 303                 for (i = 0; i < 4; i++)
 304                         port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
 305         } else {
 306                 port->absc = model->abs;
 307                 for (i = 0; i < 4; i++)
 308                         port->btnc[i] = model->btnc[i];
 309         }
 310
 311         for (i = 0; i < 4; i++)
 312                 port->btno[i] = model->btno[i];
 313
 314         snprintf(port->name, sizeof(port->name), model->name,
 315                  port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
 316         snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);
 317
 318         port->dev = input_dev;
 319
 320         input_dev->name = port->name;
 321         input_dev->phys = port->phys;
 322         input_dev->id.bustype = BUS_GAMEPORT;
 323         input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
 324         input_dev->id.product = model->id;
 325         input_dev->id.version = 0x0100;
 326         input_dev->dev.parent = &tmdc->gameport->dev;
 327
 328         input_set_drvdata(input_dev, tmdc);
 329
 330         input_dev->open = tmdc_open;
 331         input_dev->close = tmdc_close;
 332
 333         input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 334
 335         for (i = 0; i < port->absc && i < TMDC_ABS; i++)
 336                 if (port->abs[i] >= 0)
 337                         input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);
 338
 339         for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
 340                 input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);
 341
 342         for (i = 0; i < 4; i++) {
 343                 for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
 344                         set_bit(port->btn[j + b], input_dev->keybit);
 345                 b += port->btnc[i];
 346         }
 347
 348         err = input_register_device(port->dev);
 349         if (err)
 350                 goto fail;
 351
 352         return 0;
 353
 354  fail:  input_free_device(input_dev);
 355         kfree(port);
 356         return err;
 357 }
 358
 359 /*
 360  * tmdc_probe() probes for ThrustMaster type joysticks.
 361  */
 362
 363 static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
 364 {
 365         unsigned char data[2][TMDC_MAX_LENGTH];
 366         struct tmdc *tmdc;
 367         int i;
 368         int err;
 369
 370         if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
 371                 return -ENOMEM;
 372
 373         tmdc->gameport = gameport;
 374
 375         gameport_set_drvdata(gameport, tmdc);
 376
 377         err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
 378         if (err)
 379                 goto fail1;
 380
 381         if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
 382                 err = -ENODEV;
 383                 goto fail2;
 384         }
 385
 386         gameport_set_poll_handler(gameport, tmdc_poll);
 387         gameport_set_poll_interval(gameport, 20);
 388
 389         for (i = 0; i < 2; i++) {
 390                 if (tmdc->exists & (1 << i)) {
 391
 392                         err = tmdc_setup_port(tmdc, i, data[i]);
 393                         if (err)
 394                                 goto fail3;
 395                 }
 396         }
 397
 398         return 0;
 399
 400  fail3: while (--i >= 0) {
 401                 if (tmdc->port[i]) {
 402                         input_unregister_device(tmdc->port[i]->dev);
 403                         kfree(tmdc->port[i]);
 404                 }
 405         }
 406  fail2: gameport_close(gameport);
 407  fail1: gameport_set_drvdata(gameport, NULL);
 408         kfree(tmdc);
 409         return err;
 410 }
 411
 412 static void tmdc_disconnect(struct gameport *gameport)
 413 {
 414         struct tmdc *tmdc = gameport_get_drvdata(gameport);
 415         int i;
 416
 417         for (i = 0; i < 2; i++) {
 418                 if (tmdc->port[i]) {
 419                         input_unregister_device(tmdc->port[i]->dev);
 420                         kfree(tmdc->port[i]);
 421                 }
 422         }
 423         gameport_close(gameport);
 424         gameport_set_drvdata(gameport, NULL);
 425         kfree(tmdc);
 426 }
 427
 428 static struct gameport_driver tmdc_drv = {
 429         .driver         = {
 430                 .name   = "tmdc",
 431                 .owner  = THIS_MODULE,
 432         },
 433         .description    = DRIVER_DESC,
 434         .connect        = tmdc_connect,
 435         .disconnect     = tmdc_disconnect,
 436 };
 437
 438 module_gameport_driver(tmdc_drv);