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