drivers/input/joystick/tmdc.c

   1 /*
   2  * $Id: tmdc.c,v 1.31 2002/01/22 20:29:52 vojtech Exp $
   3  *
   4  *  Copyright (c) 1998-2001 Vojtech Pavlik
   5  *
   6  *   Based on the work of:
   7  *      Trystan Larey-Williams
   8  */
   9
  10 /*
  11  * ThrustMaster DirectConnect (BSP) joystick family driver for Linux
  12  */
  13
  14 /*
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  28  *
  29  * Should you need to contact me, the author, you can do so either by
  30  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  31  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  32  */
  33
  34 #include <linux/delay.h>
  35 #include <linux/kernel.h>
  36 #include <linux/slab.h>
  37 #include <linux/module.h>
  38 #include <linux/init.h>
  39 #include <linux/gameport.h>
  40 #include <linux/input.h>
  41 #include <linux/jiffies.h>
  42
  43 #define DRIVER_DESC     "ThrustMaster DirectConnect joystick driver"
  44
  45 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  46 MODULE_DESCRIPTION(DRIVER_DESC);
  47 MODULE_LICENSE("GPL");
  48
  49 #define TMDC_MAX_START          600     /* 600 us */
  50 #define TMDC_MAX_STROBE         60      /* 60 us */
  51 #define TMDC_MAX_LENGTH         13
  52
  53 #define TMDC_MODE_M3DI          1
  54 #define TMDC_MODE_3DRP          3
  55 #define TMDC_MODE_AT            4
  56 #define TMDC_MODE_FM            8
  57 #define TMDC_MODE_FGP           163
  58
  59 #define TMDC_BYTE_ID            10
  60 #define TMDC_BYTE_REV           11
  61 #define TMDC_BYTE_DEF           12
  62
  63 #define TMDC_ABS                7
  64 #define TMDC_ABS_HAT            4
  65 #define TMDC_BTN                16
  66
  67 static const unsigned char tmdc_byte_a[16] = { 0, 1, 3, 4, 6, 7 };
  68 static const unsigned char tmdc_byte_d[16] = { 2, 5, 8, 9 };
  69
  70 static const signed char tmdc_abs[TMDC_ABS] =
  71         { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE, ABS_RX, ABS_RY, ABS_RZ };
  72 static const signed char tmdc_abs_hat[TMDC_ABS_HAT] =
  73         { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y };
  74 static const signed char tmdc_abs_at[TMDC_ABS] =
  75         { ABS_X, ABS_Y, ABS_RUDDER, -1, ABS_THROTTLE };
  76 static const signed char tmdc_abs_fm[TMDC_ABS] =
  77         { ABS_RX, ABS_RY, ABS_X, ABS_Y };
  78
  79 static const short tmdc_btn_pad[TMDC_BTN] =
  80         { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_START, BTN_SELECT, BTN_TL, BTN_TR };
  81 static const short tmdc_btn_joy[TMDC_BTN] =
  82         { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_THUMB2, BTN_PINKIE,
  83           BTN_BASE3, BTN_BASE4, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z };
  84 static const short tmdc_btn_fm[TMDC_BTN] =
  85         { BTN_TRIGGER, BTN_C, BTN_B, BTN_A, BTN_THUMB, BTN_X, BTN_Y, BTN_Z, BTN_TOP, BTN_TOP2 };
  86 static const short tmdc_btn_at[TMDC_BTN] =
  87         { BTN_TRIGGER, BTN_THUMB2, BTN_PINKIE, BTN_THUMB, BTN_BASE6, BTN_BASE5, BTN_BASE4,
  88           BTN_BASE3, BTN_BASE2, BTN_BASE };
  89
  90 static const struct {
  91         int x;
  92         int y;
  93 } tmdc_hat_to_axis[] = {{ 0, 0}, { 1, 0}, { 0,-1}, {-1, 0}, { 0, 1}};
  94
  95 static const struct tmdc_model {
  96         unsigned char id;
  97         const char *name;
  98         char abs;
  99         char hats;
 100         char btnc[4];
 101         char btno[4];
 102         const signed char *axes;
 103         const short *buttons;
 104 } tmdc_models[] = {
 105         {   1, "ThrustMaster Millenium 3D Inceptor",      6, 2, { 4, 2 }, { 4, 6 }, tmdc_abs, tmdc_btn_joy },
 106         {   3, "ThrustMaster Rage 3D Gamepad",            2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
 107         {   4, "ThrustMaster Attack Throttle",            5, 2, { 4, 6 }, { 4, 2 }, tmdc_abs_at, tmdc_btn_at },
 108         {   8, "ThrustMaster FragMaster",                 4, 0, { 8, 2 }, { 0, 0 }, tmdc_abs_fm, tmdc_btn_fm },
 109         { 163, "Thrustmaster Fusion GamePad",             2, 0, { 8, 2 }, { 0, 0 }, tmdc_abs, tmdc_btn_pad },
 110         {   0, "Unknown %d-axis, %d-button TM device %d", 0, 0, { 0, 0 }, { 0, 0 }, tmdc_abs, tmdc_btn_joy }
 111 };
 112
 113
 114 struct tmdc_port {
 115         struct input_dev *dev;
 116         char name[64];
 117         char phys[32];
 118         int mode;
 119         const signed char *abs;
 120         const short *btn;
 121         unsigned char absc;
 122         unsigned char btnc[4];
 123         unsigned char btno[4];
 124 };
 125
 126 struct tmdc {
 127         struct gameport *gameport;
 128         struct tmdc_port *port[2];
 129 #if 0
 130         struct input_dev *dev[2];
 131         char name[2][64];
 132         char phys[2][32];
 133         int mode[2];
 134         signed char *abs[2];
 135         short *btn[2];
 136         unsigned char absc[2];
 137         unsigned char btnc[2][4];
 138         unsigned char btno[2][4];
 139 #endif
 140         int reads;
 141         int bads;
 142         unsigned char exists;
 143 };
 144
 145 /*
 146  * tmdc_read_packet() reads a ThrustMaster packet.
 147  */
 148
 149 static int tmdc_read_packet(struct gameport *gameport, unsigned char data[2][TMDC_MAX_LENGTH])
 150 {
 151         unsigned char u, v, w, x;
 152         unsigned long flags;
 153         int i[2], j[2], t[2], p, k;
 154
 155         p = gameport_time(gameport, TMDC_MAX_STROBE);
 156
 157         for (k = 0; k < 2; k++) {
 158                 t[k] = gameport_time(gameport, TMDC_MAX_START);
 159                 i[k] = j[k] = 0;
 160         }
 161
 162         local_irq_save(flags);
 163         gameport_trigger(gameport);
 164
 165         w = gameport_read(gameport) >> 4;
 166
 167         do {
 168                 x = w;
 169                 w = gameport_read(gameport) >> 4;
 170
 171                 for (k = 0, v = w, u = x; k < 2; k++, v >>= 2, u >>= 2) {
 172                         if (~v & u & 2) {
 173                                 if (t[k] <= 0 || i[k] >= TMDC_MAX_LENGTH) continue;
 174                                 t[k] = p;
 175                                 if (j[k] == 0) {                                 /* Start bit */
 176                                         if (~v & 1) t[k] = 0;
 177                                         data[k][i[k]] = 0; j[k]++; continue;
 178                                 }
 179                                 if (j[k] == 9) {                                /* Stop bit */
 180                                         if (v & 1) t[k] = 0;
 181                                         j[k] = 0; i[k]++; continue;
 182                                 }
 183                                 data[k][i[k]] |= (~v & 1) << (j[k]++ - 1);      /* Data bit */
 184                         }
 185                         t[k]--;
 186                 }
 187         } while (t[0] > 0 || t[1] > 0);
 188
 189         local_irq_restore(flags);
 190
 191         return (i[0] == TMDC_MAX_LENGTH) | ((i[1] == TMDC_MAX_LENGTH) << 1);
 192 }
 193
 194 static int tmdc_parse_packet(struct tmdc_port *port, unsigned char *data)
 195 {
 196         int i, k, l;
 197
 198         if (data[TMDC_BYTE_ID] != port->mode)
 199                 return -1;
 200
 201         for (i = 0; i < port->absc; i++) {
 202                 if (port->abs[i] < 0)
 203                         return 0;
 204
 205                 input_report_abs(port->dev, port->abs[i], data[tmdc_byte_a[i]]);
 206         }
 207
 208         switch (port->mode) {
 209
 210                 case TMDC_MODE_M3DI:
 211
 212                         i = tmdc_byte_d[0];
 213                         input_report_abs(port->dev, ABS_HAT0X, ((data[i] >> 3) & 1) - ((data[i] >> 1) & 1));
 214                         input_report_abs(port->dev, ABS_HAT0Y, ((data[i] >> 2) & 1) - ( data[i]       & 1));
 215                         break;
 216
 217                 case TMDC_MODE_AT:
 218
 219                         i = tmdc_byte_a[3];
 220                         input_report_abs(port->dev, ABS_HAT0X, tmdc_hat_to_axis[(data[i] - 141) / 25].x);
 221                         input_report_abs(port->dev, ABS_HAT0Y, tmdc_hat_to_axis[(data[i] - 141) / 25].y);
 222                         break;
 223
 224         }
 225
 226         for (k = l = 0; k < 4; k++) {
 227                 for (i = 0; i < port->btnc[k]; i++)
 228                         input_report_key(port->dev, port->btn[i + l],
 229                                 ((data[tmdc_byte_d[k]] >> (i + port->btno[k])) & 1));
 230                 l += port->btnc[k];
 231         }
 232
 233         input_sync(port->dev);
 234
 235         return 0;
 236 }
 237
 238 /*
 239  * tmdc_poll() reads and analyzes ThrustMaster joystick data.
 240  */
 241
 242 static void tmdc_poll(struct gameport *gameport)
 243 {
 244         unsigned char data[2][TMDC_MAX_LENGTH];
 245         struct tmdc *tmdc = gameport_get_drvdata(gameport);
 246         unsigned char r, bad = 0;
 247         int i;
 248
 249         tmdc->reads++;
 250
 251         if ((r = tmdc_read_packet(tmdc->gameport, data)) != tmdc->exists)
 252                 bad = 1;
 253         else {
 254                 for (i = 0; i < 2; i++) {
 255                         if (r & (1 << i) & tmdc->exists) {
 256
 257                                 if (tmdc_parse_packet(tmdc->port[i], data[i]))
 258                                         bad = 1;
 259                         }
 260                 }
 261         }
 262
 263         tmdc->bads += bad;
 264 }
 265
 266 static int tmdc_open(struct input_dev *dev)
 267 {
 268         struct tmdc *tmdc = dev->private;
 269
 270         gameport_start_polling(tmdc->gameport);
 271         return 0;
 272 }
 273
 274 static void tmdc_close(struct input_dev *dev)
 275 {
 276         struct tmdc *tmdc = dev->private;
 277
 278         gameport_stop_polling(tmdc->gameport);
 279 }
 280
 281 static int tmdc_setup_port(struct tmdc *tmdc, int idx, unsigned char *data)
 282 {
 283         const struct tmdc_model *model;
 284         struct tmdc_port *port;
 285         struct input_dev *input_dev;
 286         int i, j, b = 0;
 287
 288         tmdc->port[idx] = port = kzalloc(sizeof (struct tmdc_port), GFP_KERNEL);
 289         input_dev = input_allocate_device();
 290         if (!port || !input_dev) {
 291                 kfree(port);
 292                 input_free_device(input_dev);
 293                 return -ENOMEM;
 294         }
 295
 296         port->mode = data[TMDC_BYTE_ID];
 297
 298         for (model = tmdc_models; model->id && model->id != port->mode; model++)
 299                 /* empty */;
 300
 301         port->abs = model->axes;
 302         port->btn = model->buttons;
 303
 304         if (!model->id) {
 305                 port->absc = data[TMDC_BYTE_DEF] >> 4;
 306                 for (i = 0; i < 4; i++)
 307                         port->btnc[i] = i < (data[TMDC_BYTE_DEF] & 0xf) ? 8 : 0;
 308         } else {
 309                 port->absc = model->abs;
 310                 for (i = 0; i < 4; i++)
 311                         port->btnc[i] = model->btnc[i];
 312         }
 313
 314         for (i = 0; i < 4; i++)
 315                 port->btno[i] = model->btno[i];
 316
 317         snprintf(port->name, sizeof(port->name), model->name,
 318                  port->absc, (data[TMDC_BYTE_DEF] & 0xf) << 3, port->mode);
 319         snprintf(port->phys, sizeof(port->phys), "%s/input%d", tmdc->gameport->phys, i);
 320
 321         port->dev = input_dev;
 322
 323         input_dev->name = port->name;
 324         input_dev->phys = port->phys;
 325         input_dev->id.bustype = BUS_GAMEPORT;
 326         input_dev->id.vendor = GAMEPORT_ID_VENDOR_THRUSTMASTER;
 327         input_dev->id.product = model->id;
 328         input_dev->id.version = 0x0100;
 329         input_dev->cdev.dev = &tmdc->gameport->dev;
 330         input_dev->private = tmdc;
 331
 332         input_dev->open = tmdc_open;
 333         input_dev->close = tmdc_close;
 334
 335         input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 336
 337         for (i = 0; i < port->absc && i < TMDC_ABS; i++)
 338                 if (port->abs[i] >= 0)
 339                         input_set_abs_params(input_dev, port->abs[i], 8, 248, 2, 4);
 340
 341         for (i = 0; i < model->hats && i < TMDC_ABS_HAT; i++)
 342                 input_set_abs_params(input_dev, tmdc_abs_hat[i], -1, 1, 0, 0);
 343
 344         for (i = 0; i < 4; i++) {
 345                 for (j = 0; j < port->btnc[i] && j < TMDC_BTN; j++)
 346                         set_bit(port->btn[j + b], input_dev->keybit);
 347                 b += port->btnc[i];
 348         }
 349
 350         input_register_device(port->dev);
 351
 352         return 0;
 353 }
 354
 355 /*
 356  * tmdc_probe() probes for ThrustMaster type joysticks.
 357  */
 358
 359 static int tmdc_connect(struct gameport *gameport, struct gameport_driver *drv)
 360 {
 361         unsigned char data[2][TMDC_MAX_LENGTH];
 362         struct tmdc *tmdc;
 363         int i;
 364         int err;
 365
 366         if (!(tmdc = kzalloc(sizeof(struct tmdc), GFP_KERNEL)))
 367                 return -ENOMEM;
 368
 369         tmdc->gameport = gameport;
 370
 371         gameport_set_drvdata(gameport, tmdc);
 372
 373         err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
 374         if (err)
 375                 goto fail1;
 376
 377         if (!(tmdc->exists = tmdc_read_packet(gameport, data))) {
 378                 err = -ENODEV;
 379                 goto fail2;
 380         }
 381
 382         gameport_set_poll_handler(gameport, tmdc_poll);
 383         gameport_set_poll_interval(gameport, 20);
 384
 385         for (i = 0; i < 2; i++) {
 386                 if (tmdc->exists & (1 << i)) {
 387
 388                         err = tmdc_setup_port(tmdc, i, data[i]);
 389                         if (err)
 390                                 goto fail3;
 391                 }
 392         }
 393
 394         return 0;
 395
 396  fail3: while (--i >= 0) {
 397                 if (tmdc->port[i]) {
 398                         input_unregister_device(tmdc->port[i]->dev);
 399                         kfree(tmdc->port[i]);
 400                 }
 401         }
 402  fail2: gameport_close(gameport);
 403  fail1: gameport_set_drvdata(gameport, NULL);
 404         kfree(tmdc);
 405         return err;
 406 }
 407
 408 static void tmdc_disconnect(struct gameport *gameport)
 409 {
 410         struct tmdc *tmdc = gameport_get_drvdata(gameport);
 411         int i;
 412
 413         for (i = 0; i < 2; i++) {
 414                 if (tmdc->port[i]) {
 415                         input_unregister_device(tmdc->port[i]->dev);
 416                         kfree(tmdc->port[i]);
 417                 }
 418         }
 419         gameport_close(gameport);
 420         gameport_set_drvdata(gameport, NULL);
 421         kfree(tmdc);
 422 }
 423
 424 static struct gameport_driver tmdc_drv = {
 425         .driver         = {
 426                 .name   = "tmdc",
 427         },
 428         .description    = DRIVER_DESC,
 429         .connect        = tmdc_connect,
 430         .disconnect     = tmdc_disconnect,
 431 };
 432
 433 static int __init tmdc_init(void)
 434 {
 435         gameport_register_driver(&tmdc_drv);
 436         return 0;
 437 }
 438
 439 static void __exit tmdc_exit(void)
 440 {
 441         gameport_unregister_driver(&tmdc_drv);
 442 }
 443
 444 module_init(tmdc_init);
 445 module_exit(tmdc_exit);