drivers/input/joystick/a3d.c

   1 /*
   2  * $Id: a3d.c,v 1.21 2002/01/22 20:11:50 vojtech Exp $
   3  *
   4  *  Copyright (c) 1998-2001 Vojtech Pavlik
   5  */
   6
   7 /*
   8  * FP-Gaming Assasin 3D joystick driver for Linux
   9  */
  10
  11 /*
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  25  *
  26  * Should you need to contact me, the author, you can do so either by
  27  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  28  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  29  */
  30
  31 #include <linux/kernel.h>
  32 #include <linux/module.h>
  33 #include <linux/slab.h>
  34 #include <linux/init.h>
  35 #include <linux/gameport.h>
  36 #include <linux/input.h>
  37
  38 #define DRIVER_DESC     "FP-Gaming Assasin 3D joystick driver"
  39
  40 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  41 MODULE_DESCRIPTION(DRIVER_DESC);
  42 MODULE_LICENSE("GPL");
  43
  44 #define A3D_MAX_START           600     /* 600 us */
  45 #define A3D_MAX_STROBE          80      /* 80 us */
  46 #define A3D_MAX_LENGTH          40      /* 40*3 bits */
  47
  48 #define A3D_MODE_A3D            1       /* Assassin 3D */
  49 #define A3D_MODE_PAN            2       /* Panther */
  50 #define A3D_MODE_OEM            3       /* Panther OEM version */
  51 #define A3D_MODE_PXL            4       /* Panther XL */
  52
  53 static char *a3d_names[] = { NULL, "FP-Gaming Assassin 3D", "MadCatz Panther", "OEM Panther",
  54                         "MadCatz Panther XL", "MadCatz Panther XL w/ rudder" };
  55
  56 struct a3d {
  57         struct gameport *gameport;
  58         struct gameport *adc;
  59         struct input_dev dev;
  60         int axes[4];
  61         int buttons;
  62         int mode;
  63         int length;
  64         int reads;
  65         int bads;
  66         char phys[32];
  67 };
  68
  69 /*
  70  * a3d_read_packet() reads an Assassin 3D packet.
  71  */
  72
  73 static int a3d_read_packet(struct gameport *gameport, int length, char *data)
  74 {
  75         unsigned long flags;
  76         unsigned char u, v;
  77         unsigned int t, s;
  78         int i;
  79
  80         i = 0;
  81         t = gameport_time(gameport, A3D_MAX_START);
  82         s = gameport_time(gameport, A3D_MAX_STROBE);
  83
  84         local_irq_save(flags);
  85         gameport_trigger(gameport);
  86         v = gameport_read(gameport);
  87
  88         while (t > 0 && i < length) {
  89                 t--;
  90                 u = v; v = gameport_read(gameport);
  91                 if (~v & u & 0x10) {
  92                         data[i++] = v >> 5;
  93                         t = s;
  94                 }
  95         }
  96
  97         local_irq_restore(flags);
  98
  99         return i;
 100 }
 101
 102 /*
 103  * a3d_csum() computes checksum of triplet packet
 104  */
 105
 106 static int a3d_csum(char *data, int count)
 107 {
 108         int i, csum = 0;
 109
 110         for (i = 0; i < count - 2; i++)
 111                 csum += data[i];
 112         return (csum & 0x3f) != ((data[count - 2] << 3) | data[count - 1]);
 113 }
 114
 115 static void a3d_read(struct a3d *a3d, unsigned char *data)
 116 {
 117         struct input_dev *dev = &a3d->dev;
 118
 119         switch (a3d->mode) {
 120
 121                 case A3D_MODE_A3D:
 122                 case A3D_MODE_OEM:
 123                 case A3D_MODE_PAN:
 124
 125                         input_report_rel(dev, REL_X, ((data[5] << 6) | (data[6] << 3) | data[ 7]) - ((data[5] & 4) << 7));
 126                         input_report_rel(dev, REL_Y, ((data[8] << 6) | (data[9] << 3) | data[10]) - ((data[8] & 4) << 7));
 127
 128                         input_report_key(dev, BTN_RIGHT,  data[2] & 1);
 129                         input_report_key(dev, BTN_LEFT,   data[3] & 2);
 130                         input_report_key(dev, BTN_MIDDLE, data[3] & 4);
 131
 132                         input_sync(dev);
 133
 134                         a3d->axes[0] = ((signed char)((data[11] << 6) | (data[12] << 3) | (data[13]))) + 128;
 135                         a3d->axes[1] = ((signed char)((data[14] << 6) | (data[15] << 3) | (data[16]))) + 128;
 136                         a3d->axes[2] = ((signed char)((data[17] << 6) | (data[18] << 3) | (data[19]))) + 128;
 137                         a3d->axes[3] = ((signed char)((data[20] << 6) | (data[21] << 3) | (data[22]))) + 128;
 138
 139                         a3d->buttons = ((data[3] << 3) | data[4]) & 0xf;
 140
 141                         break;
 142
 143                 case A3D_MODE_PXL:
 144
 145                         input_report_rel(dev, REL_X, ((data[ 9] << 6) | (data[10] << 3) | data[11]) - ((data[ 9] & 4) << 7));
 146                         input_report_rel(dev, REL_Y, ((data[12] << 6) | (data[13] << 3) | data[14]) - ((data[12] & 4) << 7));
 147
 148                         input_report_key(dev, BTN_RIGHT,  data[2] & 1);
 149                         input_report_key(dev, BTN_LEFT,   data[3] & 2);
 150                         input_report_key(dev, BTN_MIDDLE, data[3] & 4);
 151                         input_report_key(dev, BTN_SIDE,   data[7] & 2);
 152                         input_report_key(dev, BTN_EXTRA,  data[7] & 4);
 153
 154                         input_report_abs(dev, ABS_X,        ((signed char)((data[15] << 6) | (data[16] << 3) | (data[17]))) + 128);
 155                         input_report_abs(dev, ABS_Y,        ((signed char)((data[18] << 6) | (data[19] << 3) | (data[20]))) + 128);
 156                         input_report_abs(dev, ABS_RUDDER,   ((signed char)((data[21] << 6) | (data[22] << 3) | (data[23]))) + 128);
 157                         input_report_abs(dev, ABS_THROTTLE, ((signed char)((data[24] << 6) | (data[25] << 3) | (data[26]))) + 128);
 158
 159                         input_report_abs(dev, ABS_HAT0X, ( data[5]       & 1) - ((data[5] >> 2) & 1));
 160                         input_report_abs(dev, ABS_HAT0Y, ((data[5] >> 1) & 1) - ((data[6] >> 2) & 1));
 161                         input_report_abs(dev, ABS_HAT1X, ((data[4] >> 1) & 1) - ( data[3]       & 1));
 162                         input_report_abs(dev, ABS_HAT1Y, ((data[4] >> 2) & 1) - ( data[4]       & 1));
 163
 164                         input_report_key(dev, BTN_TRIGGER, data[8] & 1);
 165                         input_report_key(dev, BTN_THUMB,   data[8] & 2);
 166                         input_report_key(dev, BTN_TOP,     data[8] & 4);
 167                         input_report_key(dev, BTN_PINKIE,  data[7] & 1);
 168
 169                         input_sync(dev);
 170
 171                         break;
 172         }
 173 }
 174
 175
 176 /*
 177  * a3d_poll() reads and analyzes A3D joystick data.
 178  */
 179
 180 static void a3d_poll(struct gameport *gameport)
 181 {
 182         struct a3d *a3d = gameport_get_drvdata(gameport);
 183         unsigned char data[A3D_MAX_LENGTH];
 184
 185         a3d->reads++;
 186         if (a3d_read_packet(a3d->gameport, a3d->length, data) != a3d->length ||
 187             data[0] != a3d->mode || a3d_csum(data, a3d->length))
 188                 a3d->bads++;
 189         else
 190                 a3d_read(a3d, data);
 191 }
 192
 193 /*
 194  * a3d_adc_cooked_read() copies the acis and button data to the
 195  * callers arrays. It could do the read itself, but the caller could
 196  * call this more than 50 times a second, which would use too much CPU.
 197  */
 198
 199 static int a3d_adc_cooked_read(struct gameport *gameport, int *axes, int *buttons)
 200 {
 201         struct a3d *a3d = gameport->port_data;
 202         int i;
 203
 204         for (i = 0; i < 4; i++)
 205                 axes[i] = (a3d->axes[i] < 254) ? a3d->axes[i] : -1;
 206         *buttons = a3d->buttons;
 207         return 0;
 208 }
 209
 210 /*
 211  * a3d_adc_open() is the gameport open routine. It refuses to serve
 212  * any but cooked data.
 213  */
 214
 215 static int a3d_adc_open(struct gameport *gameport, int mode)
 216 {
 217         struct a3d *a3d = gameport->port_data;
 218
 219         if (mode != GAMEPORT_MODE_COOKED)
 220                 return -1;
 221
 222         gameport_start_polling(a3d->gameport);
 223         return 0;
 224 }
 225
 226 /*
 227  * a3d_adc_close() is a callback from the input close routine.
 228  */
 229
 230 static void a3d_adc_close(struct gameport *gameport)
 231 {
 232         struct a3d *a3d = gameport->port_data;
 233
 234         gameport_stop_polling(a3d->gameport);
 235 }
 236
 237 /*
 238  * a3d_open() is a callback from the input open routine.
 239  */
 240
 241 static int a3d_open(struct input_dev *dev)
 242 {
 243         struct a3d *a3d = dev->private;
 244
 245         gameport_start_polling(a3d->gameport);
 246         return 0;
 247 }
 248
 249 /*
 250  * a3d_close() is a callback from the input close routine.
 251  */
 252
 253 static void a3d_close(struct input_dev *dev)
 254 {
 255         struct a3d *a3d = dev->private;
 256
 257         gameport_stop_polling(a3d->gameport);
 258 }
 259
 260 /*
 261  * a3d_connect() probes for A3D joysticks.
 262  */
 263
 264 static int a3d_connect(struct gameport *gameport, struct gameport_driver *drv)
 265 {
 266         struct a3d *a3d;
 267         struct gameport *adc;
 268         unsigned char data[A3D_MAX_LENGTH];
 269         int i;
 270         int err;
 271
 272         if (!(a3d = kcalloc(1, sizeof(struct a3d), GFP_KERNEL)))
 273                 return -ENOMEM;
 274
 275         a3d->gameport = gameport;
 276
 277         gameport_set_drvdata(gameport, a3d);
 278
 279         err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
 280         if (err)
 281                 goto fail1;
 282
 283         i = a3d_read_packet(gameport, A3D_MAX_LENGTH, data);
 284
 285         if (!i || a3d_csum(data, i)) {
 286                 err = -ENODEV;
 287                 goto fail2;
 288         }
 289
 290         a3d->mode = data[0];
 291
 292         if (!a3d->mode || a3d->mode > 5) {
 293                 printk(KERN_WARNING "a3d.c: Unknown A3D device detected "
 294                         "(%s, id=%d), contact <vojtech@ucw.cz>\n", gameport->phys, a3d->mode);
 295                 err = -ENODEV;
 296                 goto fail2;
 297         }
 298
 299         gameport_set_poll_handler(gameport, a3d_poll);
 300         gameport_set_poll_interval(gameport, 20);
 301
 302         sprintf(a3d->phys, "%s/input0", gameport->phys);
 303
 304         if (a3d->mode == A3D_MODE_PXL) {
 305
 306                 int axes[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RUDDER };
 307
 308                 a3d->length = 33;
 309
 310                 init_input_dev(&a3d->dev);
 311
 312                 a3d->dev.evbit[0] |= BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
 313                 a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
 314                 a3d->dev.absbit[0] |= BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_THROTTLE) | BIT(ABS_RUDDER)
 315                                    | BIT(ABS_HAT0X) | BIT(ABS_HAT0Y) | BIT(ABS_HAT1X) | BIT(ABS_HAT1Y);
 316
 317                 a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE)
 318                                                  | BIT(BTN_SIDE) | BIT(BTN_EXTRA);
 319
 320                 a3d->dev.keybit[LONG(BTN_JOYSTICK)] |= BIT(BTN_TRIGGER) | BIT(BTN_THUMB) | BIT(BTN_TOP) | BIT(BTN_PINKIE);
 321
 322                 a3d_read(a3d, data);
 323
 324                 for (i = 0; i < 4; i++) {
 325                         if (i < 2)
 326                                 input_set_abs_params(&a3d->dev, axes[i], 48, a3d->dev.abs[axes[i]] * 2 - 48, 0, 8);
 327                         else
 328                                 input_set_abs_params(&a3d->dev, axes[i], 2, 253, 0, 0);
 329                         input_set_abs_params(&a3d->dev, ABS_HAT0X + i, -1, 1, 0, 0);
 330                 }
 331
 332         } else {
 333                 a3d->length = 29;
 334
 335                 init_input_dev(&a3d->dev);
 336
 337                 a3d->dev.evbit[0] |= BIT(EV_KEY) | BIT(EV_REL);
 338                 a3d->dev.relbit[0] |= BIT(REL_X) | BIT(REL_Y);
 339                 a3d->dev.keybit[LONG(BTN_MOUSE)] |= BIT(BTN_RIGHT) | BIT(BTN_LEFT) | BIT(BTN_MIDDLE);
 340
 341                 a3d_read(a3d, data);
 342
 343                 if (!(a3d->adc = adc = gameport_allocate_port()))
 344                         printk(KERN_ERR "a3d: Not enough memory for ADC port\n");
 345                 else {
 346                         adc->port_data = a3d;
 347                         adc->open = a3d_adc_open;
 348                         adc->close = a3d_adc_close;
 349                         adc->cooked_read = a3d_adc_cooked_read;
 350                         adc->fuzz = 1;
 351
 352                         gameport_set_name(adc, a3d_names[a3d->mode]);
 353                         gameport_set_phys(adc, "%s/gameport0", gameport->phys);
 354                         adc->dev.parent = &gameport->dev;
 355
 356                         gameport_register_port(adc);
 357                 }
 358         }
 359
 360         a3d->dev.private = a3d;
 361         a3d->dev.open = a3d_open;
 362         a3d->dev.close = a3d_close;
 363
 364         a3d->dev.name = a3d_names[a3d->mode];
 365         a3d->dev.phys = a3d->phys;
 366         a3d->dev.id.bustype = BUS_GAMEPORT;
 367         a3d->dev.id.vendor = GAMEPORT_ID_VENDOR_MADCATZ;
 368         a3d->dev.id.product = a3d->mode;
 369         a3d->dev.id.version = 0x0100;
 370
 371         input_register_device(&a3d->dev);
 372         printk(KERN_INFO "input: %s on %s\n", a3d_names[a3d->mode], a3d->phys);
 373
 374         return 0;
 375
 376 fail2:  gameport_close(gameport);
 377 fail1:  gameport_set_drvdata(gameport, NULL);
 378         kfree(a3d);
 379         return err;
 380 }
 381
 382 static void a3d_disconnect(struct gameport *gameport)
 383 {
 384         struct a3d *a3d = gameport_get_drvdata(gameport);
 385
 386         input_unregister_device(&a3d->dev);
 387         if (a3d->adc) {
 388                 gameport_unregister_port(a3d->adc);
 389                 a3d->adc = NULL;
 390         }
 391         gameport_close(gameport);
 392         gameport_set_drvdata(gameport, NULL);
 393         kfree(a3d);
 394 }
 395
 396 static struct gameport_driver a3d_drv = {
 397         .driver         = {
 398                 .name   = "adc",
 399         },
 400         .description    = DRIVER_DESC,
 401         .connect        = a3d_connect,
 402         .disconnect     = a3d_disconnect,
 403 };
 404
 405 static int __init a3d_init(void)
 406 {
 407         gameport_register_driver(&a3d_drv);
 408         return 0;
 409 }
 410
 411 static void __exit a3d_exit(void)
 412 {
 413         gameport_unregister_driver(&a3d_drv);
 414 }
 415
 416 module_init(a3d_init);
 417 module_exit(a3d_exit);