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