drivers/input/joystick/interact.c

   1 /*
   2  * $Id: interact.c,v 1.16 2002/01/22 20:28:25 vojtech Exp $
   3  *
   4  *  Copyright (c) 2001 Vojtech Pavlik
   5  *
   6  *  Based on the work of:
   7  *      Toby Deshane
   8  */
   9
  10 /*
  11  * InterAct digital gamepad/joystick 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/kernel.h>
  35 #include <linux/slab.h>
  36 #include <linux/module.h>
  37 #include <linux/delay.h>
  38 #include <linux/init.h>
  39 #include <linux/gameport.h>
  40 #include <linux/input.h>
  41
  42 #define DRIVER_DESC     "InterAct digital joystick driver"
  43
  44 MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
  45 MODULE_DESCRIPTION(DRIVER_DESC);
  46 MODULE_LICENSE("GPL");
  47
  48 #define INTERACT_MAX_START      600     /* 400 us */
  49 #define INTERACT_MAX_STROBE     60      /* 40 us */
  50 #define INTERACT_MAX_LENGTH     32      /* 32 bits */
  51
  52 #define INTERACT_TYPE_HHFX      0       /* HammerHead/FX */
  53 #define INTERACT_TYPE_PP8D      1       /* ProPad 8 */
  54
  55 struct interact {
  56         struct gameport *gameport;
  57         struct input_dev dev;
  58         int bads;
  59         int reads;
  60         unsigned char type;
  61         unsigned char length;
  62         char phys[32];
  63 };
  64
  65 static short interact_abs_hhfx[] =
  66         { ABS_RX, ABS_RY, ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y, -1 };
  67 static short interact_abs_pp8d[] =
  68         { ABS_X, ABS_Y, -1 };
  69
  70 static short interact_btn_hhfx[] =
  71         { BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL, BTN_TL2, BTN_TR2, BTN_MODE, BTN_SELECT, -1 };
  72 static short interact_btn_pp8d[] =
  73         { BTN_C, BTN_TL, BTN_TR, BTN_A, BTN_B, BTN_Y, BTN_Z, BTN_X, -1 };
  74
  75 struct interact_type {
  76         int id;
  77         short *abs;
  78         short *btn;
  79         char *name;
  80         unsigned char length;
  81         unsigned char b8;
  82 };
  83
  84 static struct interact_type interact_type[] = {
  85         { 0x6202, interact_abs_hhfx, interact_btn_hhfx, "InterAct HammerHead/FX",    32, 4 },
  86         { 0x53f8, interact_abs_pp8d, interact_btn_pp8d, "InterAct ProPad 8 Digital", 16, 0 },
  87         { 0 }};
  88
  89 /*
  90  * interact_read_packet() reads and InterAct joystick data.
  91  */
  92
  93 static int interact_read_packet(struct gameport *gameport, int length, u32 *data)
  94 {
  95         unsigned long flags;
  96         unsigned char u, v;
  97         unsigned int t, s;
  98         int i;
  99
 100         i = 0;
 101         data[0] = data[1] = data[2] = 0;
 102         t = gameport_time(gameport, INTERACT_MAX_START);
 103         s = gameport_time(gameport, INTERACT_MAX_STROBE);
 104
 105         local_irq_save(flags);
 106         gameport_trigger(gameport);
 107         v = gameport_read(gameport);
 108
 109         while (t > 0 && i < length) {
 110                 t--;
 111                 u = v; v = gameport_read(gameport);
 112                 if (v & ~u & 0x40) {
 113                         data[0] = (data[0] << 1) | ((v >> 4) & 1);
 114                         data[1] = (data[1] << 1) | ((v >> 5) & 1);
 115                         data[2] = (data[2] << 1) | ((v >> 7) & 1);
 116                         i++;
 117                         t = s;
 118                 }
 119         }
 120
 121         local_irq_restore(flags);
 122
 123         return i;
 124 }
 125
 126 /*
 127  * interact_poll() reads and analyzes InterAct joystick data.
 128  */
 129
 130 static void interact_poll(struct gameport *gameport)
 131 {
 132         struct interact *interact = gameport_get_drvdata(gameport);
 133         struct input_dev *dev = &interact->dev;
 134         u32 data[3];
 135         int i;
 136
 137         interact->reads++;
 138
 139         if (interact_read_packet(interact->gameport, interact->length, data) < interact->length) {
 140                 interact->bads++;
 141         } else {
 142
 143                 for (i = 0; i < 3; i++)
 144                         data[i] <<= INTERACT_MAX_LENGTH - interact->length;
 145
 146                 switch (interact->type) {
 147
 148                         case INTERACT_TYPE_HHFX:
 149
 150                                 for (i = 0; i < 4; i++)
 151                                         input_report_abs(dev, interact_abs_hhfx[i], (data[i & 1] >> ((i >> 1) << 3)) & 0xff);
 152
 153                                 for (i = 0; i < 2; i++)
 154                                         input_report_abs(dev, ABS_HAT0Y - i,
 155                                                 ((data[1] >> ((i << 1) + 17)) & 1)  - ((data[1] >> ((i << 1) + 16)) & 1));
 156
 157                                 for (i = 0; i < 8; i++)
 158                                         input_report_key(dev, interact_btn_hhfx[i], (data[0] >> (i + 16)) & 1);
 159
 160                                 for (i = 0; i < 4; i++)
 161                                         input_report_key(dev, interact_btn_hhfx[i + 8], (data[1] >> (i + 20)) & 1);
 162
 163                                 break;
 164
 165                         case INTERACT_TYPE_PP8D:
 166
 167                                 for (i = 0; i < 2; i++)
 168                                         input_report_abs(dev, interact_abs_pp8d[i],
 169                                                 ((data[0] >> ((i << 1) + 20)) & 1)  - ((data[0] >> ((i << 1) + 21)) & 1));
 170
 171                                 for (i = 0; i < 8; i++)
 172                                         input_report_key(dev, interact_btn_pp8d[i], (data[1] >> (i + 16)) & 1);
 173
 174                                 break;
 175                 }
 176         }
 177
 178         input_sync(dev);
 179 }
 180
 181 /*
 182  * interact_open() is a callback from the input open routine.
 183  */
 184
 185 static int interact_open(struct input_dev *dev)
 186 {
 187         struct interact *interact = dev->private;
 188
 189         gameport_start_polling(interact->gameport);
 190         return 0;
 191 }
 192
 193 /*
 194  * interact_close() is a callback from the input close routine.
 195  */
 196
 197 static void interact_close(struct input_dev *dev)
 198 {
 199         struct interact *interact = dev->private;
 200
 201         gameport_stop_polling(interact->gameport);
 202 }
 203
 204 /*
 205  * interact_connect() probes for InterAct joysticks.
 206  */
 207
 208 static int interact_connect(struct gameport *gameport, struct gameport_driver *drv)
 209 {
 210         struct interact *interact;
 211         __u32 data[3];
 212         int i, t;
 213         int err;
 214
 215         if (!(interact = kcalloc(1, sizeof(struct interact), GFP_KERNEL)))
 216                 return -ENOMEM;
 217
 218         interact->gameport = gameport;
 219
 220         gameport_set_drvdata(gameport, interact);
 221
 222         err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
 223         if (err)
 224                 goto fail1;
 225
 226         i = interact_read_packet(gameport, INTERACT_MAX_LENGTH * 2, data);
 227
 228         if (i != 32 || (data[0] >> 24) != 0x0c || (data[1] >> 24) != 0x02) {
 229                 err = -ENODEV;
 230                 goto fail2;
 231         }
 232
 233         for (i = 0; interact_type[i].length; i++)
 234                 if (interact_type[i].id == (data[2] >> 16))
 235                         break;
 236
 237         if (!interact_type[i].length) {
 238                 printk(KERN_WARNING "interact.c: Unknown joystick on %s. [len %d d0 %08x d1 %08x i2 %08x]\n",
 239                         gameport->phys, i, data[0], data[1], data[2]);
 240                 err = -ENODEV;
 241                 goto fail2;
 242         }
 243
 244         gameport_set_poll_handler(gameport, interact_poll);
 245         gameport_set_poll_interval(gameport, 20);
 246
 247         sprintf(interact->phys, "%s/input0", gameport->phys);
 248
 249         interact->type = i;
 250         interact->length = interact_type[i].length;
 251
 252         interact->dev.private = interact;
 253         interact->dev.open = interact_open;
 254         interact->dev.close = interact_close;
 255
 256         interact->dev.name = interact_type[i].name;
 257         interact->dev.phys = interact->phys;
 258         interact->dev.id.bustype = BUS_GAMEPORT;
 259         interact->dev.id.vendor = GAMEPORT_ID_VENDOR_INTERACT;
 260         interact->dev.id.product = interact_type[i].id;
 261         interact->dev.id.version = 0x0100;
 262
 263         interact->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
 264
 265         for (i = 0; (t = interact_type[interact->type].abs[i]) >= 0; i++) {
 266                 set_bit(t, interact->dev.absbit);
 267                 if (i < interact_type[interact->type].b8) {
 268                         interact->dev.absmin[t] = 0;
 269                         interact->dev.absmax[t] = 255;
 270                 } else {
 271                         interact->dev.absmin[t] = -1;
 272                         interact->dev.absmax[t] = 1;
 273                 }
 274         }
 275
 276         for (i = 0; (t = interact_type[interact->type].btn[i]) >= 0; i++)
 277                 set_bit(t, interact->dev.keybit);
 278
 279         input_register_device(&interact->dev);
 280         printk(KERN_INFO "input: %s on %s\n",
 281                 interact_type[interact->type].name, gameport->phys);
 282
 283         return 0;
 284
 285 fail2:  gameport_close(gameport);
 286 fail1:  gameport_set_drvdata(gameport, NULL);
 287         kfree(interact);
 288         return err;
 289 }
 290
 291 static void interact_disconnect(struct gameport *gameport)
 292 {
 293         struct interact *interact = gameport_get_drvdata(gameport);
 294
 295         input_unregister_device(&interact->dev);
 296         gameport_close(gameport);
 297         gameport_set_drvdata(gameport, NULL);
 298         kfree(interact);
 299 }
 300
 301 static struct gameport_driver interact_drv = {
 302         .driver         = {
 303                 .name   = "interact",
 304         },
 305         .description    = DRIVER_DESC,
 306         .connect        = interact_connect,
 307         .disconnect     = interact_disconnect,
 308 };
 309
 310 static int __init interact_init(void)
 311 {
 312         gameport_register_driver(&interact_drv);
 313         return 0;
 314 }
 315
 316 static void __exit interact_exit(void)
 317 {
 318         gameport_unregister_driver(&interact_drv);
 319 }
 320
 321 module_init(interact_init);
 322 module_exit(interact_exit);