drivers/hid/hid-wiimote-modules.c

   1 /*
   2  * Device Modules for Nintendo Wii / Wii U HID Driver
   3  * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
   4  */
   5
   6 /*
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  */
  12
  13 /*
  14  * Wiimote Modules
  15  * Nintendo devices provide different peripherals and many new devices lack
  16  * initial features like the IR camera. Therefore, each peripheral device is
  17  * implemented as an independent module and we probe on each device only the
  18  * modules for the hardware that really is available.
  19  *
  20  * Module registration is sequential. Unregistration is done in reverse order.
  21  * After device detection, the needed modules are loaded. Users can trigger
  22  * re-detection which causes all modules to be unloaded and then reload the
  23  * modules for the new detected device.
  24  *
  25  * wdata->input is a shared input device. It is always initialized prior to
  26  * module registration. If at least one registered module is marked as
  27  * WIIMOD_FLAG_INPUT, then the input device will get registered after all
  28  * modules were registered.
  29  * Please note that it is unregistered _before_ the "remove" callbacks are
  30  * called. This guarantees that no input interaction is done, anymore. However,
  31  * the wiimote core keeps a reference to the input device so it is freed only
  32  * after all modules were removed. It is safe to send events to unregistered
  33  * input devices.
  34  */
  35
  36 #include <linux/device.h>
  37 #include <linux/hid.h>
  38 #include <linux/input.h>
  39 #include <linux/spinlock.h>
  40 #include "hid-wiimote.h"
  41
  42 /*
  43  * Keys
  44  * The initial Wii Remote provided a bunch of buttons that are reported as
  45  * part of the core protocol. Many later devices dropped these and report
  46  * invalid data in the core button reports. Load this only on devices which
  47  * correctly send button reports.
  48  * It uses the shared input device.
  49  */
  50
  51 static const __u16 wiimod_keys_map[] = {
  52         KEY_LEFT,       /* WIIPROTO_KEY_LEFT */
  53         KEY_RIGHT,      /* WIIPROTO_KEY_RIGHT */
  54         KEY_UP,         /* WIIPROTO_KEY_UP */
  55         KEY_DOWN,       /* WIIPROTO_KEY_DOWN */
  56         KEY_NEXT,       /* WIIPROTO_KEY_PLUS */
  57         KEY_PREVIOUS,   /* WIIPROTO_KEY_MINUS */
  58         BTN_1,          /* WIIPROTO_KEY_ONE */
  59         BTN_2,          /* WIIPROTO_KEY_TWO */
  60         BTN_A,          /* WIIPROTO_KEY_A */
  61         BTN_B,          /* WIIPROTO_KEY_B */
  62         BTN_MODE,       /* WIIPROTO_KEY_HOME */
  63 };
  64
  65 static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
  66 {
  67         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
  68                                                         !!(keys[0] & 0x01));
  69         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
  70                                                         !!(keys[0] & 0x02));
  71         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
  72                                                         !!(keys[0] & 0x04));
  73         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
  74                                                         !!(keys[0] & 0x08));
  75         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
  76                                                         !!(keys[0] & 0x10));
  77         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
  78                                                         !!(keys[1] & 0x01));
  79         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
  80                                                         !!(keys[1] & 0x02));
  81         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
  82                                                         !!(keys[1] & 0x04));
  83         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
  84                                                         !!(keys[1] & 0x08));
  85         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
  86                                                         !!(keys[1] & 0x10));
  87         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
  88                                                         !!(keys[1] & 0x80));
  89         input_sync(wdata->input);
  90 }
  91
  92 static int wiimod_keys_probe(const struct wiimod_ops *ops,
  93                              struct wiimote_data *wdata)
  94 {
  95         unsigned int i;
  96
  97         set_bit(EV_KEY, wdata->input->evbit);
  98         for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
  99                 set_bit(wiimod_keys_map[i], wdata->input->keybit);
 100
 101         return 0;
 102 }
 103
 104 static const struct wiimod_ops wiimod_keys = {
 105         .flags = WIIMOD_FLAG_INPUT,
 106         .arg = 0,
 107         .probe = wiimod_keys_probe,
 108         .remove = NULL,
 109         .in_keys = wiimod_keys_in_keys,
 110 };
 111
 112 /*
 113  * Rumble
 114  * Nearly all devices provide a rumble feature. A small motor for
 115  * force-feedback effects. We provide an FF_RUMBLE memless ff device on the
 116  * shared input device if this module is loaded.
 117  * The rumble motor is controlled via a flag on almost every output report so
 118  * the wiimote core handles the rumble flag. But if a device doesn't provide
 119  * the rumble motor, this flag shouldn't be set.
 120  */
 121
 122 static int wiimod_rumble_play(struct input_dev *dev, void *data,
 123                               struct ff_effect *eff)
 124 {
 125         struct wiimote_data *wdata = input_get_drvdata(dev);
 126         __u8 value;
 127         unsigned long flags;
 128
 129         /*
 130          * The wiimote supports only a single rumble motor so if any magnitude
 131          * is set to non-zero then we start the rumble motor. If both are set to
 132          * zero, we stop the rumble motor.
 133          */
 134
 135         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 136                 value = 1;
 137         else
 138                 value = 0;
 139
 140         spin_lock_irqsave(&wdata->state.lock, flags);
 141         wiiproto_req_rumble(wdata, value);
 142         spin_unlock_irqrestore(&wdata->state.lock, flags);
 143
 144         return 0;
 145 }
 146
 147 static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 148                                struct wiimote_data *wdata)
 149 {
 150         set_bit(FF_RUMBLE, wdata->input->ffbit);
 151         if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 152                 return -ENOMEM;
 153
 154         return 0;
 155 }
 156
 157 static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 158                                  struct wiimote_data *wdata)
 159 {
 160         unsigned long flags;
 161
 162         spin_lock_irqsave(&wdata->state.lock, flags);
 163         wiiproto_req_rumble(wdata, 0);
 164         spin_unlock_irqrestore(&wdata->state.lock, flags);
 165 }
 166
 167 static const struct wiimod_ops wiimod_rumble = {
 168         .flags = WIIMOD_FLAG_INPUT,
 169         .arg = 0,
 170         .probe = wiimod_rumble_probe,
 171         .remove = wiimod_rumble_remove,
 172 };
 173
 174 /*
 175  * Battery
 176  * 1 byte of battery capacity information is sent along every protocol status
 177  * report. The wiimote core caches it but we try to update it on every
 178  * user-space request.
 179  * This is supported by nearly every device so it's almost always enabled.
 180  */
 181
 182 static enum power_supply_property wiimod_battery_props[] = {
 183         POWER_SUPPLY_PROP_CAPACITY,
 184         POWER_SUPPLY_PROP_SCOPE,
 185 };
 186
 187 static int wiimod_battery_get_property(struct power_supply *psy,
 188                                        enum power_supply_property psp,
 189                                        union power_supply_propval *val)
 190 {
 191         struct wiimote_data *wdata = container_of(psy, struct wiimote_data,
 192                                                   battery);
 193         int ret = 0, state;
 194         unsigned long flags;
 195
 196         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 197                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 198                 return 0;
 199         } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 200                 return -EINVAL;
 201         }
 202
 203         ret = wiimote_cmd_acquire(wdata);
 204         if (ret)
 205                 return ret;
 206
 207         spin_lock_irqsave(&wdata->state.lock, flags);
 208         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 209         wiiproto_req_status(wdata);
 210         spin_unlock_irqrestore(&wdata->state.lock, flags);
 211
 212         wiimote_cmd_wait(wdata);
 213         wiimote_cmd_release(wdata);
 214
 215         spin_lock_irqsave(&wdata->state.lock, flags);
 216         state = wdata->state.cmd_battery;
 217         spin_unlock_irqrestore(&wdata->state.lock, flags);
 218
 219         val->intval = state * 100 / 255;
 220         return ret;
 221 }
 222
 223 static int wiimod_battery_probe(const struct wiimod_ops *ops,
 224                                 struct wiimote_data *wdata)
 225 {
 226         int ret;
 227
 228         wdata->battery.properties = wiimod_battery_props;
 229         wdata->battery.num_properties = ARRAY_SIZE(wiimod_battery_props);
 230         wdata->battery.get_property = wiimod_battery_get_property;
 231         wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
 232         wdata->battery.use_for_apm = 0;
 233         wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 234                                         wdata->hdev->uniq);
 235         if (!wdata->battery.name)
 236                 return -ENOMEM;
 237
 238         ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
 239         if (ret) {
 240                 hid_err(wdata->hdev, "cannot register battery device\n");
 241                 goto err_free;
 242         }
 243
 244         power_supply_powers(&wdata->battery, &wdata->hdev->dev);
 245         return 0;
 246
 247 err_free:
 248         kfree(wdata->battery.name);
 249         wdata->battery.name = NULL;
 250         return ret;
 251 }
 252
 253 static void wiimod_battery_remove(const struct wiimod_ops *ops,
 254                                   struct wiimote_data *wdata)
 255 {
 256         if (!wdata->battery.name)
 257                 return;
 258
 259         power_supply_unregister(&wdata->battery);
 260         kfree(wdata->battery.name);
 261         wdata->battery.name = NULL;
 262 }
 263
 264 static const struct wiimod_ops wiimod_battery = {
 265         .flags = 0,
 266         .arg = 0,
 267         .probe = wiimod_battery_probe,
 268         .remove = wiimod_battery_remove,
 269 };
 270
 271 /*
 272  * LED
 273  * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 274  * wiimod_ops structure specifies which LED this module controls. This allows
 275  * to register a limited number of LEDs.
 276  * State is managed by wiimote core.
 277  */
 278
 279 static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
 280 {
 281         struct wiimote_data *wdata;
 282         struct device *dev = led_dev->dev->parent;
 283         int i;
 284         unsigned long flags;
 285         bool value = false;
 286
 287         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 288
 289         for (i = 0; i < 4; ++i) {
 290                 if (wdata->leds[i] == led_dev) {
 291                         spin_lock_irqsave(&wdata->state.lock, flags);
 292                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 293                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 294                         break;
 295                 }
 296         }
 297
 298         return value ? LED_FULL : LED_OFF;
 299 }
 300
 301 static void wiimod_led_set(struct led_classdev *led_dev,
 302                            enum led_brightness value)
 303 {
 304         struct wiimote_data *wdata;
 305         struct device *dev = led_dev->dev->parent;
 306         int i;
 307         unsigned long flags;
 308         __u8 state, flag;
 309
 310         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 311
 312         for (i = 0; i < 4; ++i) {
 313                 if (wdata->leds[i] == led_dev) {
 314                         flag = WIIPROTO_FLAG_LED(i + 1);
 315                         spin_lock_irqsave(&wdata->state.lock, flags);
 316                         state = wdata->state.flags;
 317                         if (value == LED_OFF)
 318                                 wiiproto_req_leds(wdata, state & ~flag);
 319                         else
 320                                 wiiproto_req_leds(wdata, state | flag);
 321                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 322                         break;
 323                 }
 324         }
 325 }
 326
 327 static int wiimod_led_probe(const struct wiimod_ops *ops,
 328                             struct wiimote_data *wdata)
 329 {
 330         struct device *dev = &wdata->hdev->dev;
 331         size_t namesz = strlen(dev_name(dev)) + 9;
 332         struct led_classdev *led;
 333         unsigned long flags;
 334         char *name;
 335         int ret;
 336
 337         led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 338         if (!led)
 339                 return -ENOMEM;
 340
 341         name = (void*)&led[1];
 342         snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 343         led->name = name;
 344         led->brightness = 0;
 345         led->max_brightness = 1;
 346         led->brightness_get = wiimod_led_get;
 347         led->brightness_set = wiimod_led_set;
 348
 349         wdata->leds[ops->arg] = led;
 350         ret = led_classdev_register(dev, led);
 351         if (ret)
 352                 goto err_free;
 353
 354         /* enable LED1 to stop initial LED-blinking */
 355         if (ops->arg == 0) {
 356                 spin_lock_irqsave(&wdata->state.lock, flags);
 357                 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 358                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 359         }
 360
 361         return 0;
 362
 363 err_free:
 364         wdata->leds[ops->arg] = NULL;
 365         kfree(led);
 366         return ret;
 367 }
 368
 369 static void wiimod_led_remove(const struct wiimod_ops *ops,
 370                               struct wiimote_data *wdata)
 371 {
 372         if (!wdata->leds[ops->arg])
 373                 return;
 374
 375         led_classdev_unregister(wdata->leds[ops->arg]);
 376         kfree(wdata->leds[ops->arg]);
 377         wdata->leds[ops->arg] = NULL;
 378 }
 379
 380 static const struct wiimod_ops wiimod_leds[4] = {
 381         {
 382                 .flags = 0,
 383                 .arg = 0,
 384                 .probe = wiimod_led_probe,
 385                 .remove = wiimod_led_remove,
 386         },
 387         {
 388                 .flags = 0,
 389                 .arg = 1,
 390                 .probe = wiimod_led_probe,
 391                 .remove = wiimod_led_remove,
 392         },
 393         {
 394                 .flags = 0,
 395                 .arg = 2,
 396                 .probe = wiimod_led_probe,
 397                 .remove = wiimod_led_remove,
 398         },
 399         {
 400                 .flags = 0,
 401                 .arg = 3,
 402                 .probe = wiimod_led_probe,
 403                 .remove = wiimod_led_remove,
 404         },
 405 };
 406
 407 /*
 408  * Accelerometer
 409  * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 410  * device, it's mostly cleared to 0. This module parses this data and provides
 411  * it via a separate input device.
 412  */
 413
 414 static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 415                                   const __u8 *accel)
 416 {
 417         __u16 x, y, z;
 418
 419         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 420                 return;
 421
 422         /*
 423          * payload is: BB BB XX YY ZZ
 424          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 425          * contain the upper 8 bits of each value. The lower 2 bits are
 426          * contained in the buttons data BB BB.
 427          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 428          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 429          * accel value and bit 6 is the second bit of the Z value.
 430          * The first bit of Y and Z values is not available and always set to 0.
 431          * 0x200 is returned on no movement.
 432          */
 433
 434         x = accel[2] << 2;
 435         y = accel[3] << 2;
 436         z = accel[4] << 2;
 437
 438         x |= (accel[0] >> 5) & 0x3;
 439         y |= (accel[1] >> 4) & 0x2;
 440         z |= (accel[1] >> 5) & 0x2;
 441
 442         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 443         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 444         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 445         input_sync(wdata->accel);
 446 }
 447
 448 static int wiimod_accel_open(struct input_dev *dev)
 449 {
 450         struct wiimote_data *wdata = input_get_drvdata(dev);
 451         unsigned long flags;
 452
 453         spin_lock_irqsave(&wdata->state.lock, flags);
 454         wiiproto_req_accel(wdata, true);
 455         spin_unlock_irqrestore(&wdata->state.lock, flags);
 456
 457         return 0;
 458 }
 459
 460 static void wiimod_accel_close(struct input_dev *dev)
 461 {
 462         struct wiimote_data *wdata = input_get_drvdata(dev);
 463         unsigned long flags;
 464
 465         spin_lock_irqsave(&wdata->state.lock, flags);
 466         wiiproto_req_accel(wdata, false);
 467         spin_unlock_irqrestore(&wdata->state.lock, flags);
 468 }
 469
 470 static int wiimod_accel_probe(const struct wiimod_ops *ops,
 471                               struct wiimote_data *wdata)
 472 {
 473         int ret;
 474
 475         wdata->accel = input_allocate_device();
 476         if (!wdata->accel)
 477                 return -ENOMEM;
 478
 479         input_set_drvdata(wdata->accel, wdata);
 480         wdata->accel->open = wiimod_accel_open;
 481         wdata->accel->close = wiimod_accel_close;
 482         wdata->accel->dev.parent = &wdata->hdev->dev;
 483         wdata->accel->id.bustype = wdata->hdev->bus;
 484         wdata->accel->id.vendor = wdata->hdev->vendor;
 485         wdata->accel->id.product = wdata->hdev->product;
 486         wdata->accel->id.version = wdata->hdev->version;
 487         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 488
 489         set_bit(EV_ABS, wdata->accel->evbit);
 490         set_bit(ABS_RX, wdata->accel->absbit);
 491         set_bit(ABS_RY, wdata->accel->absbit);
 492         set_bit(ABS_RZ, wdata->accel->absbit);
 493         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 494         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 495         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 496
 497         ret = input_register_device(wdata->accel);
 498         if (ret) {
 499                 hid_err(wdata->hdev, "cannot register input device\n");
 500                 goto err_free;
 501         }
 502
 503         return 0;
 504
 505 err_free:
 506         input_free_device(wdata->accel);
 507         wdata->accel = NULL;
 508         return ret;
 509 }
 510
 511 static void wiimod_accel_remove(const struct wiimod_ops *ops,
 512                                 struct wiimote_data *wdata)
 513 {
 514         if (!wdata->accel)
 515                 return;
 516
 517         input_unregister_device(wdata->accel);
 518         wdata->accel = NULL;
 519 }
 520
 521 static const struct wiimod_ops wiimod_accel = {
 522         .flags = 0,
 523         .arg = 0,
 524         .probe = wiimod_accel_probe,
 525         .remove = wiimod_accel_remove,
 526         .in_accel = wiimod_accel_in_accel,
 527 };
 528
 529 /*
 530  * IR Cam
 531  * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 532  * to be initialized with a fairly complex procedure and consumes a lot of
 533  * power. Therefore, as long as no application uses the IR input device, it is
 534  * kept offline.
 535  * Nearly no other device than the normal Wii Remotes supports the IR cam so
 536  * you can disable this module for these devices.
 537  */
 538
 539 static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 540                             bool packed, unsigned int id)
 541 {
 542         __u16 x, y;
 543         __u8 xid, yid;
 544         bool sync = false;
 545
 546         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 547                 return;
 548
 549         switch (id) {
 550         case 0:
 551                 xid = ABS_HAT0X;
 552                 yid = ABS_HAT0Y;
 553                 break;
 554         case 1:
 555                 xid = ABS_HAT1X;
 556                 yid = ABS_HAT1Y;
 557                 break;
 558         case 2:
 559                 xid = ABS_HAT2X;
 560                 yid = ABS_HAT2Y;
 561                 break;
 562         case 3:
 563                 xid = ABS_HAT3X;
 564                 yid = ABS_HAT3Y;
 565                 sync = true;
 566                 break;
 567         default:
 568                 return;
 569         };
 570
 571         /*
 572          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 573          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 574          * of both.
 575          * If data is packed, then the 3rd byte is put first and slightly
 576          * reordered. This allows to interleave packed and non-packed data to
 577          * have two IR sets in 5 bytes instead of 6.
 578          * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 579          */
 580
 581         if (packed) {
 582                 x = ir[1] | ((ir[0] & 0x03) << 8);
 583                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 584         } else {
 585                 x = ir[0] | ((ir[2] & 0x30) << 4);
 586                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 587         }
 588
 589         input_report_abs(wdata->ir, xid, x);
 590         input_report_abs(wdata->ir, yid, y);
 591
 592         if (sync)
 593                 input_sync(wdata->ir);
 594 }
 595
 596 static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 597 {
 598         int ret;
 599         unsigned long flags;
 600         __u8 format = 0;
 601         static const __u8 data_enable[] = { 0x01 };
 602         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 603                                                 0x00, 0xaa, 0x00, 0x64 };
 604         static const __u8 data_sens2[] = { 0x63, 0x03 };
 605         static const __u8 data_fin[] = { 0x08 };
 606
 607         spin_lock_irqsave(&wdata->state.lock, flags);
 608
 609         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 610                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 611                 return 0;
 612         }
 613
 614         if (mode == 0) {
 615                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 616                 wiiproto_req_ir1(wdata, 0);
 617                 wiiproto_req_ir2(wdata, 0);
 618                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 619                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 620                 return 0;
 621         }
 622
 623         spin_unlock_irqrestore(&wdata->state.lock, flags);
 624
 625         ret = wiimote_cmd_acquire(wdata);
 626         if (ret)
 627                 return ret;
 628
 629         /* send PIXEL CLOCK ENABLE cmd first */
 630         spin_lock_irqsave(&wdata->state.lock, flags);
 631         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 632         wiiproto_req_ir1(wdata, 0x06);
 633         spin_unlock_irqrestore(&wdata->state.lock, flags);
 634
 635         ret = wiimote_cmd_wait(wdata);
 636         if (ret)
 637                 goto unlock;
 638         if (wdata->state.cmd_err) {
 639                 ret = -EIO;
 640                 goto unlock;
 641         }
 642
 643         /* enable IR LOGIC */
 644         spin_lock_irqsave(&wdata->state.lock, flags);
 645         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 646         wiiproto_req_ir2(wdata, 0x06);
 647         spin_unlock_irqrestore(&wdata->state.lock, flags);
 648
 649         ret = wiimote_cmd_wait(wdata);
 650         if (ret)
 651                 goto unlock;
 652         if (wdata->state.cmd_err) {
 653                 ret = -EIO;
 654                 goto unlock;
 655         }
 656
 657         /* enable IR cam but do not make it send data, yet */
 658         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 659                                                         sizeof(data_enable));
 660         if (ret)
 661                 goto unlock;
 662
 663         /* write first sensitivity block */
 664         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 665                                                         sizeof(data_sens1));
 666         if (ret)
 667                 goto unlock;
 668
 669         /* write second sensitivity block */
 670         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 671                                                         sizeof(data_sens2));
 672         if (ret)
 673                 goto unlock;
 674
 675         /* put IR cam into desired state */
 676         switch (mode) {
 677                 case WIIPROTO_FLAG_IR_FULL:
 678                         format = 5;
 679                         break;
 680                 case WIIPROTO_FLAG_IR_EXT:
 681                         format = 3;
 682                         break;
 683                 case WIIPROTO_FLAG_IR_BASIC:
 684                         format = 1;
 685                         break;
 686         }
 687         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 688         if (ret)
 689                 goto unlock;
 690
 691         /* make IR cam send data */
 692         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 693         if (ret)
 694                 goto unlock;
 695
 696         /* request new DRM mode compatible to IR mode */
 697         spin_lock_irqsave(&wdata->state.lock, flags);
 698         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 699         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 700         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 701         spin_unlock_irqrestore(&wdata->state.lock, flags);
 702
 703 unlock:
 704         wiimote_cmd_release(wdata);
 705         return ret;
 706 }
 707
 708 static int wiimod_ir_open(struct input_dev *dev)
 709 {
 710         struct wiimote_data *wdata = input_get_drvdata(dev);
 711
 712         return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 713 }
 714
 715 static void wiimod_ir_close(struct input_dev *dev)
 716 {
 717         struct wiimote_data *wdata = input_get_drvdata(dev);
 718
 719         wiimod_ir_change(wdata, 0);
 720 }
 721
 722 static int wiimod_ir_probe(const struct wiimod_ops *ops,
 723                            struct wiimote_data *wdata)
 724 {
 725         int ret;
 726
 727         wdata->ir = input_allocate_device();
 728         if (!wdata->ir)
 729                 return -ENOMEM;
 730
 731         input_set_drvdata(wdata->ir, wdata);
 732         wdata->ir->open = wiimod_ir_open;
 733         wdata->ir->close = wiimod_ir_close;
 734         wdata->ir->dev.parent = &wdata->hdev->dev;
 735         wdata->ir->id.bustype = wdata->hdev->bus;
 736         wdata->ir->id.vendor = wdata->hdev->vendor;
 737         wdata->ir->id.product = wdata->hdev->product;
 738         wdata->ir->id.version = wdata->hdev->version;
 739         wdata->ir->name = WIIMOTE_NAME " IR";
 740
 741         set_bit(EV_ABS, wdata->ir->evbit);
 742         set_bit(ABS_HAT0X, wdata->ir->absbit);
 743         set_bit(ABS_HAT0Y, wdata->ir->absbit);
 744         set_bit(ABS_HAT1X, wdata->ir->absbit);
 745         set_bit(ABS_HAT1Y, wdata->ir->absbit);
 746         set_bit(ABS_HAT2X, wdata->ir->absbit);
 747         set_bit(ABS_HAT2Y, wdata->ir->absbit);
 748         set_bit(ABS_HAT3X, wdata->ir->absbit);
 749         set_bit(ABS_HAT3Y, wdata->ir->absbit);
 750         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 751         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 752         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 753         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 754         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 755         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 756         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 757         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 758
 759         ret = input_register_device(wdata->ir);
 760         if (ret) {
 761                 hid_err(wdata->hdev, "cannot register input device\n");
 762                 goto err_free;
 763         }
 764
 765         return 0;
 766
 767 err_free:
 768         input_free_device(wdata->ir);
 769         wdata->ir = NULL;
 770         return ret;
 771 }
 772
 773 static void wiimod_ir_remove(const struct wiimod_ops *ops,
 774                              struct wiimote_data *wdata)
 775 {
 776         if (!wdata->ir)
 777                 return;
 778
 779         input_unregister_device(wdata->ir);
 780         wdata->ir = NULL;
 781 }
 782
 783 static const struct wiimod_ops wiimod_ir = {
 784         .flags = 0,
 785         .arg = 0,
 786         .probe = wiimod_ir_probe,
 787         .remove = wiimod_ir_remove,
 788         .in_ir = wiimod_ir_in_ir,
 789 };
 790
 791 /*
 792  * Nunchuk Extension
 793  * The Nintendo Wii Nunchuk was the first official extension published by
 794  * Nintendo. It provides two additional keys and a separate accelerometer. It
 795  * can be hotplugged to standard Wii Remotes.
 796  */
 797
 798 enum wiimod_nunchuk_keys {
 799         WIIMOD_NUNCHUK_KEY_C,
 800         WIIMOD_NUNCHUK_KEY_Z,
 801         WIIMOD_NUNCHUK_KEY_NUM,
 802 };
 803
 804 static const __u16 wiimod_nunchuk_map[] = {
 805         BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 806         BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 807 };
 808
 809 static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 810 {
 811         __s16 x, y, z, bx, by;
 812
 813         /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 814          *   -----+----------+---------+---------+----+-----+
 815          *    1   |              Button X <7:0>             |
 816          *    2   |              Button Y <7:0>             |
 817          *   -----+----------+---------+---------+----+-----+
 818          *    3   |               Speed X <9:2>             |
 819          *    4   |               Speed Y <9:2>             |
 820          *    5   |               Speed Z <9:2>             |
 821          *   -----+----------+---------+---------+----+-----+
 822          *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 823          *   -----+----------+---------+---------+----+-----+
 824          * Button X/Y is the analog stick. Speed X, Y and Z are the
 825          * accelerometer data in the same format as the wiimote's accelerometer.
 826          * The 6th byte contains the LSBs of the accelerometer data.
 827          * BC and BZ are the C and Z buttons: 0 means pressed
 828          *
 829          * If reported interleaved with motionp, then the layout changes. The
 830          * 5th and 6th byte changes to:
 831          *   -----+-----------------------------------+-----+
 832          *    5   |            Speed Z <9:3>          | EXT |
 833          *   -----+--------+-----+-----+----+----+----+-----+
 834          *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 835          *   -----+--------+-----+-----+----+----+----+-----+
 836          * All three accelerometer values lose their LSB. The other data is
 837          * still available but slightly moved.
 838          *
 839          * Center data for button values is 128. Center value for accelerometer
 840          * values it 512 / 0x200
 841          */
 842
 843         bx = ext[0];
 844         by = ext[1];
 845         bx -= 128;
 846         by -= 128;
 847
 848         x = ext[2] << 2;
 849         y = ext[3] << 2;
 850         z = ext[4] << 2;
 851
 852         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 853                 x |= (ext[5] >> 3) & 0x02;
 854                 y |= (ext[5] >> 4) & 0x02;
 855                 z &= ~0x4;
 856                 z |= (ext[5] >> 5) & 0x06;
 857         } else {
 858                 x |= (ext[5] >> 2) & 0x03;
 859                 y |= (ext[5] >> 4) & 0x03;
 860                 z |= (ext[5] >> 6) & 0x03;
 861         }
 862
 863         x -= 0x200;
 864         y -= 0x200;
 865         z -= 0x200;
 866
 867         input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 868         input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 869
 870         input_report_abs(wdata->extension.input, ABS_RX, x);
 871         input_report_abs(wdata->extension.input, ABS_RY, y);
 872         input_report_abs(wdata->extension.input, ABS_RZ, z);
 873
 874         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 875                 input_report_key(wdata->extension.input,
 876                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 877                         !(ext[5] & 0x04));
 878                 input_report_key(wdata->extension.input,
 879                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 880                         !(ext[5] & 0x08));
 881         } else {
 882                 input_report_key(wdata->extension.input,
 883                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 884                         !(ext[5] & 0x01));
 885                 input_report_key(wdata->extension.input,
 886                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 887                         !(ext[5] & 0x02));
 888         }
 889
 890         input_sync(wdata->extension.input);
 891 }
 892
 893 static int wiimod_nunchuk_open(struct input_dev *dev)
 894 {
 895         struct wiimote_data *wdata = input_get_drvdata(dev);
 896         unsigned long flags;
 897
 898         spin_lock_irqsave(&wdata->state.lock, flags);
 899         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 900         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 901         spin_unlock_irqrestore(&wdata->state.lock, flags);
 902
 903         return 0;
 904 }
 905
 906 static void wiimod_nunchuk_close(struct input_dev *dev)
 907 {
 908         struct wiimote_data *wdata = input_get_drvdata(dev);
 909         unsigned long flags;
 910
 911         spin_lock_irqsave(&wdata->state.lock, flags);
 912         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 913         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 914         spin_unlock_irqrestore(&wdata->state.lock, flags);
 915 }
 916
 917 static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 918                                 struct wiimote_data *wdata)
 919 {
 920         int ret, i;
 921
 922         wdata->extension.input = input_allocate_device();
 923         if (!wdata->extension.input)
 924                 return -ENOMEM;
 925
 926         input_set_drvdata(wdata->extension.input, wdata);
 927         wdata->extension.input->open = wiimod_nunchuk_open;
 928         wdata->extension.input->close = wiimod_nunchuk_close;
 929         wdata->extension.input->dev.parent = &wdata->hdev->dev;
 930         wdata->extension.input->id.bustype = wdata->hdev->bus;
 931         wdata->extension.input->id.vendor = wdata->hdev->vendor;
 932         wdata->extension.input->id.product = wdata->hdev->product;
 933         wdata->extension.input->id.version = wdata->hdev->version;
 934         wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 935
 936         set_bit(EV_KEY, wdata->extension.input->evbit);
 937         for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 938                 set_bit(wiimod_nunchuk_map[i],
 939                         wdata->extension.input->keybit);
 940
 941         set_bit(EV_ABS, wdata->extension.input->evbit);
 942         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 943         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 944         input_set_abs_params(wdata->extension.input,
 945                              ABS_HAT0X, -120, 120, 2, 4);
 946         input_set_abs_params(wdata->extension.input,
 947                              ABS_HAT0Y, -120, 120, 2, 4);
 948         set_bit(ABS_RX, wdata->extension.input->absbit);
 949         set_bit(ABS_RY, wdata->extension.input->absbit);
 950         set_bit(ABS_RZ, wdata->extension.input->absbit);
 951         input_set_abs_params(wdata->extension.input,
 952                              ABS_RX, -500, 500, 2, 4);
 953         input_set_abs_params(wdata->extension.input,
 954                              ABS_RY, -500, 500, 2, 4);
 955         input_set_abs_params(wdata->extension.input,
 956                              ABS_RZ, -500, 500, 2, 4);
 957
 958         ret = input_register_device(wdata->extension.input);
 959         if (ret)
 960                 goto err_free;
 961
 962         return 0;
 963
 964 err_free:
 965         input_free_device(wdata->extension.input);
 966         wdata->extension.input = NULL;
 967         return ret;
 968 }
 969
 970 static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 971                                   struct wiimote_data *wdata)
 972 {
 973         if (!wdata->extension.input)
 974                 return;
 975
 976         input_unregister_device(wdata->extension.input);
 977         wdata->extension.input = NULL;
 978 }
 979
 980 static const struct wiimod_ops wiimod_nunchuk = {
 981         .flags = 0,
 982         .arg = 0,
 983         .probe = wiimod_nunchuk_probe,
 984         .remove = wiimod_nunchuk_remove,
 985         .in_ext = wiimod_nunchuk_in_ext,
 986 };
 987
 988 /*
 989  * Classic Controller
 990  * Another official extension from Nintendo. It provides a classic
 991  * gamecube-like controller that can be hotplugged on the Wii Remote.
 992  * It has several hardware buttons and switches that are all reported via
 993  * a normal extension device.
 994  */
 995
 996 enum wiimod_classic_keys {
 997         WIIMOD_CLASSIC_KEY_A,
 998         WIIMOD_CLASSIC_KEY_B,
 999         WIIMOD_CLASSIC_KEY_X,
1000         WIIMOD_CLASSIC_KEY_Y,
1001         WIIMOD_CLASSIC_KEY_ZL,
1002         WIIMOD_CLASSIC_KEY_ZR,
1003         WIIMOD_CLASSIC_KEY_PLUS,
1004         WIIMOD_CLASSIC_KEY_MINUS,
1005         WIIMOD_CLASSIC_KEY_HOME,
1006         WIIMOD_CLASSIC_KEY_LEFT,
1007         WIIMOD_CLASSIC_KEY_RIGHT,
1008         WIIMOD_CLASSIC_KEY_UP,
1009         WIIMOD_CLASSIC_KEY_DOWN,
1010         WIIMOD_CLASSIC_KEY_LT,
1011         WIIMOD_CLASSIC_KEY_RT,
1012         WIIMOD_CLASSIC_KEY_NUM,
1013 };
1014
1015 static const __u16 wiimod_classic_map[] = {
1016         BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1017         BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1018         BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1019         BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1020         BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1021         BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1022         KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1023         KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1024         BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1025         KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1026         KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1027         KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1028         KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1029         BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1030         BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1031 };
1032
1033 static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1034 {
1035         __s8 rx, ry, lx, ly, lt, rt;
1036
1037         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1038          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1039          *    1   | RX <5:4>  |              LX <5:0>             |
1040          *    2   | RX <3:2>  |              LY <5:0>             |
1041          *   -----+-----+-----+-----+-----------------------------+
1042          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1043          *   -----+-----+-----------+-----------------------------+
1044          *    4   |     LT <3:1>    |         RT <5:1>            |
1045          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1046          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1047          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1048          *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1049          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1050          * All buttons are 0 if pressed
1051          * RX and RY are right analog stick
1052          * LX and LY are left analog stick
1053          * LT is left trigger, RT is right trigger
1054          * BLT is 0 if left trigger is fully pressed
1055          * BRT is 0 if right trigger is fully pressed
1056          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1057          * BZL is left Z button and BZR is right Z button
1058          * B-, BH, B+ are +, HOME and - buttons
1059          * BB, BY, BA, BX are A, B, X, Y buttons
1060          * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1061          *
1062          * With motionp enabled it changes slightly to this:
1063          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1064          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1065          *    1   | RX <4:3>  |          LX <5:1>           | BDU |
1066          *    2   | RX <2:1>  |          LY <5:1>           | BDL |
1067          *   -----+-----+-----+-----+-----------------------+-----+
1068          *    3   |RX<0>| LT <4:3>  |         RY <4:0>            |
1069          *   -----+-----+-----------+-----------------------------+
1070          *    4   |     LT <2:0>    |         RT <4:0>            |
1071          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1072          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1073          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1074          *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1075          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1076          * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1077          * is the same as before.
1078          */
1079
1080         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1081                 lx = ext[0] & 0x3e;
1082                 ly = ext[0] & 0x3e;
1083         } else {
1084                 lx = ext[0] & 0x3f;
1085                 ly = ext[0] & 0x3f;
1086         }
1087
1088         rx = (ext[0] >> 3) & 0x14;
1089         rx |= (ext[1] >> 5) & 0x06;
1090         rx |= (ext[2] >> 7) & 0x01;
1091         ry = ext[2] & 0x1f;
1092
1093         rt = ext[3] & 0x1f;
1094         lt = (ext[2] >> 2) & 0x18;
1095         lt |= (ext[3] >> 5) & 0x07;
1096
1097         rx <<= 1;
1098         ry <<= 1;
1099         rt <<= 1;
1100         lt <<= 1;
1101
1102         input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
1103         input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
1104         input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1105         input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1106         input_report_abs(wdata->extension.input, ABS_HAT3X, rt - 0x20);
1107         input_report_abs(wdata->extension.input, ABS_HAT3Y, lt - 0x20);
1108
1109         input_report_key(wdata->extension.input,
1110                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1111                          !(ext[4] & 0x80));
1112         input_report_key(wdata->extension.input,
1113                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1114                          !(ext[4] & 0x40));
1115         input_report_key(wdata->extension.input,
1116                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1117                          !(ext[4] & 0x20));
1118         input_report_key(wdata->extension.input,
1119                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1120                          !(ext[4] & 0x10));
1121         input_report_key(wdata->extension.input,
1122                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1123                          !(ext[4] & 0x08));
1124         input_report_key(wdata->extension.input,
1125                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1126                          !(ext[4] & 0x04));
1127         input_report_key(wdata->extension.input,
1128                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1129                          !(ext[4] & 0x02));
1130         input_report_key(wdata->extension.input,
1131                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1132                          !(ext[5] & 0x80));
1133         input_report_key(wdata->extension.input,
1134                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1135                          !(ext[5] & 0x40));
1136         input_report_key(wdata->extension.input,
1137                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1138                          !(ext[5] & 0x20));
1139         input_report_key(wdata->extension.input,
1140                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1141                          !(ext[5] & 0x10));
1142         input_report_key(wdata->extension.input,
1143                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1144                          !(ext[5] & 0x08));
1145         input_report_key(wdata->extension.input,
1146                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1147                          !(ext[5] & 0x04));
1148
1149         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1150                 input_report_key(wdata->extension.input,
1151                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1152                          !(ext[1] & 0x01));
1153                 input_report_key(wdata->extension.input,
1154                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1155                          !(ext[0] & 0x01));
1156         } else {
1157                 input_report_key(wdata->extension.input,
1158                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1159                          !(ext[5] & 0x02));
1160                 input_report_key(wdata->extension.input,
1161                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1162                          !(ext[5] & 0x01));
1163         }
1164
1165         input_sync(wdata->extension.input);
1166 }
1167
1168 static int wiimod_classic_open(struct input_dev *dev)
1169 {
1170         struct wiimote_data *wdata = input_get_drvdata(dev);
1171         unsigned long flags;
1172
1173         spin_lock_irqsave(&wdata->state.lock, flags);
1174         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1175         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1176         spin_unlock_irqrestore(&wdata->state.lock, flags);
1177
1178         return 0;
1179 }
1180
1181 static void wiimod_classic_close(struct input_dev *dev)
1182 {
1183         struct wiimote_data *wdata = input_get_drvdata(dev);
1184         unsigned long flags;
1185
1186         spin_lock_irqsave(&wdata->state.lock, flags);
1187         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1188         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1189         spin_unlock_irqrestore(&wdata->state.lock, flags);
1190 }
1191
1192 static int wiimod_classic_probe(const struct wiimod_ops *ops,
1193                                 struct wiimote_data *wdata)
1194 {
1195         int ret, i;
1196
1197         wdata->extension.input = input_allocate_device();
1198         if (!wdata->extension.input)
1199                 return -ENOMEM;
1200
1201         input_set_drvdata(wdata->extension.input, wdata);
1202         wdata->extension.input->open = wiimod_classic_open;
1203         wdata->extension.input->close = wiimod_classic_close;
1204         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1205         wdata->extension.input->id.bustype = wdata->hdev->bus;
1206         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1207         wdata->extension.input->id.product = wdata->hdev->product;
1208         wdata->extension.input->id.version = wdata->hdev->version;
1209         wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1210
1211         set_bit(EV_KEY, wdata->extension.input->evbit);
1212         for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1213                 set_bit(wiimod_classic_map[i],
1214                         wdata->extension.input->keybit);
1215
1216         set_bit(EV_ABS, wdata->extension.input->evbit);
1217         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1218         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1219         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1220         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1221         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1222         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1223         input_set_abs_params(wdata->extension.input,
1224                              ABS_HAT1X, -30, 30, 1, 1);
1225         input_set_abs_params(wdata->extension.input,
1226                              ABS_HAT1Y, -30, 30, 1, 1);
1227         input_set_abs_params(wdata->extension.input,
1228                              ABS_HAT2X, -30, 30, 1, 1);
1229         input_set_abs_params(wdata->extension.input,
1230                              ABS_HAT2Y, -30, 30, 1, 1);
1231         input_set_abs_params(wdata->extension.input,
1232                              ABS_HAT3X, -30, 30, 1, 1);
1233         input_set_abs_params(wdata->extension.input,
1234                              ABS_HAT3Y, -30, 30, 1, 1);
1235
1236         ret = input_register_device(wdata->extension.input);
1237         if (ret)
1238                 goto err_free;
1239
1240         return 0;
1241
1242 err_free:
1243         input_free_device(wdata->extension.input);
1244         wdata->extension.input = NULL;
1245         return ret;
1246 }
1247
1248 static void wiimod_classic_remove(const struct wiimod_ops *ops,
1249                                   struct wiimote_data *wdata)
1250 {
1251         if (!wdata->extension.input)
1252                 return;
1253
1254         input_unregister_device(wdata->extension.input);
1255         wdata->extension.input = NULL;
1256 }
1257
1258 static const struct wiimod_ops wiimod_classic = {
1259         .flags = 0,
1260         .arg = 0,
1261         .probe = wiimod_classic_probe,
1262         .remove = wiimod_classic_remove,
1263         .in_ext = wiimod_classic_in_ext,
1264 };
1265
1266 /*
1267  * Balance Board Extension
1268  * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1269  * single push button. No other peripherals are available. However, the
1270  * balance-board data is sent via a standard Wii Remote extension. All other
1271  * data for non-present hardware is zeroed out.
1272  * Some 3rd party devices react allergic if we try to access normal Wii Remote
1273  * hardware, so this extension module should be the only module that is loaded
1274  * on balance boards.
1275  * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1276  * it needs the WIIMOD_FLAG_EXT8 flag.
1277  */
1278
1279 static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1280 {
1281         input_report_key(wdata->extension.input, BTN_A,
1282                          !!(keys[1] & 0x08));
1283         input_sync(wdata->extension.input);
1284 }
1285
1286 static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1287                                  const __u8 *ext)
1288 {
1289         __s32 val[4], tmp, div;
1290         unsigned int i;
1291         struct wiimote_state *s = &wdata->state;
1292
1293         /*
1294          * Balance board data layout:
1295          *
1296          *   Byte |  8  7  6  5  4  3  2  1  |
1297          *   -----+--------------------------+
1298          *    1   |    Top Right <15:8>      |
1299          *    2   |    Top Right  <7:0>      |
1300          *   -----+--------------------------+
1301          *    3   | Bottom Right <15:8>      |
1302          *    4   | Bottom Right  <7:0>      |
1303          *   -----+--------------------------+
1304          *    5   |     Top Left <15:8>      |
1305          *    6   |     Top Left  <7:0>      |
1306          *   -----+--------------------------+
1307          *    7   |  Bottom Left <15:8>      |
1308          *    8   |  Bottom Left  <7:0>      |
1309          *   -----+--------------------------+
1310          *
1311          * These values represent the weight-measurements of the Wii-balance
1312          * board with 16bit precision.
1313          *
1314          * The balance-board is never reported interleaved with motionp.
1315          */
1316
1317         val[0] = ext[0];
1318         val[0] <<= 8;
1319         val[0] |= ext[1];
1320
1321         val[1] = ext[2];
1322         val[1] <<= 8;
1323         val[1] |= ext[3];
1324
1325         val[2] = ext[4];
1326         val[2] <<= 8;
1327         val[2] |= ext[5];
1328
1329         val[3] = ext[6];
1330         val[3] <<= 8;
1331         val[3] |= ext[7];
1332
1333         /* apply calibration data */
1334         for (i = 0; i < 4; i++) {
1335                 if (val[i] <= s->calib_bboard[i][0]) {
1336                         tmp = 0;
1337                 } else if (val[i] < s->calib_bboard[i][1]) {
1338                         tmp = val[i] - s->calib_bboard[i][0];
1339                         tmp *= 1700;
1340                         div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1341                         tmp /= div ? div : 1;
1342                 } else {
1343                         tmp = val[i] - s->calib_bboard[i][1];
1344                         tmp *= 1700;
1345                         div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1346                         tmp /= div ? div : 1;
1347                         tmp += 1700;
1348                 }
1349                 val[i] = tmp;
1350         }
1351
1352         input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1353         input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1354         input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1355         input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1356         input_sync(wdata->extension.input);
1357 }
1358
1359 static int wiimod_bboard_open(struct input_dev *dev)
1360 {
1361         struct wiimote_data *wdata = input_get_drvdata(dev);
1362         unsigned long flags;
1363
1364         spin_lock_irqsave(&wdata->state.lock, flags);
1365         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1366         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1367         spin_unlock_irqrestore(&wdata->state.lock, flags);
1368
1369         return 0;
1370 }
1371
1372 static void wiimod_bboard_close(struct input_dev *dev)
1373 {
1374         struct wiimote_data *wdata = input_get_drvdata(dev);
1375         unsigned long flags;
1376
1377         spin_lock_irqsave(&wdata->state.lock, flags);
1378         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1379         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1380         spin_unlock_irqrestore(&wdata->state.lock, flags);
1381 }
1382
1383 static ssize_t wiimod_bboard_calib_show(struct device *dev,
1384                                         struct device_attribute *attr,
1385                                         char *out)
1386 {
1387         struct wiimote_data *wdata = dev_to_wii(dev);
1388         int i, j, ret;
1389         __u16 val;
1390         __u8 buf[24], offs;
1391
1392         ret = wiimote_cmd_acquire(wdata);
1393         if (ret)
1394                 return ret;
1395
1396         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1397         if (ret != 12) {
1398                 wiimote_cmd_release(wdata);
1399                 return ret < 0 ? ret : -EIO;
1400         }
1401         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1402         if (ret != 12) {
1403                 wiimote_cmd_release(wdata);
1404                 return ret < 0 ? ret : -EIO;
1405         }
1406
1407         wiimote_cmd_release(wdata);
1408
1409         spin_lock_irq(&wdata->state.lock);
1410         offs = 0;
1411         for (i = 0; i < 3; ++i) {
1412                 for (j = 0; j < 4; ++j) {
1413                         wdata->state.calib_bboard[j][i] = buf[offs];
1414                         wdata->state.calib_bboard[j][i] <<= 8;
1415                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1416                         offs += 2;
1417                 }
1418         }
1419         spin_unlock_irq(&wdata->state.lock);
1420
1421         ret = 0;
1422         for (i = 0; i < 3; ++i) {
1423                 for (j = 0; j < 4; ++j) {
1424                         val = wdata->state.calib_bboard[j][i];
1425                         if (i == 2 && j == 3)
1426                                 ret += sprintf(&out[ret], "%04x\n", val);
1427                         else
1428                                 ret += sprintf(&out[ret], "%04x:", val);
1429                 }
1430         }
1431
1432         return ret;
1433 }
1434
1435 static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1436
1437 static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1438                                struct wiimote_data *wdata)
1439 {
1440         int ret, i, j;
1441         __u8 buf[24], offs;
1442
1443         wiimote_cmd_acquire_noint(wdata);
1444
1445         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1446         if (ret != 12) {
1447                 wiimote_cmd_release(wdata);
1448                 return ret < 0 ? ret : -EIO;
1449         }
1450         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1451         if (ret != 12) {
1452                 wiimote_cmd_release(wdata);
1453                 return ret < 0 ? ret : -EIO;
1454         }
1455
1456         wiimote_cmd_release(wdata);
1457
1458         offs = 0;
1459         for (i = 0; i < 3; ++i) {
1460                 for (j = 0; j < 4; ++j) {
1461                         wdata->state.calib_bboard[j][i] = buf[offs];
1462                         wdata->state.calib_bboard[j][i] <<= 8;
1463                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1464                         offs += 2;
1465                 }
1466         }
1467
1468         wdata->extension.input = input_allocate_device();
1469         if (!wdata->extension.input)
1470                 return -ENOMEM;
1471
1472         ret = device_create_file(&wdata->hdev->dev,
1473                                  &dev_attr_bboard_calib);
1474         if (ret) {
1475                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1476                 goto err_free;
1477         }
1478
1479         input_set_drvdata(wdata->extension.input, wdata);
1480         wdata->extension.input->open = wiimod_bboard_open;
1481         wdata->extension.input->close = wiimod_bboard_close;
1482         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1483         wdata->extension.input->id.bustype = wdata->hdev->bus;
1484         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1485         wdata->extension.input->id.product = wdata->hdev->product;
1486         wdata->extension.input->id.version = wdata->hdev->version;
1487         wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1488
1489         set_bit(EV_KEY, wdata->extension.input->evbit);
1490         set_bit(BTN_A, wdata->extension.input->keybit);
1491
1492         set_bit(EV_ABS, wdata->extension.input->evbit);
1493         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1494         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1495         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1496         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1497         input_set_abs_params(wdata->extension.input,
1498                              ABS_HAT0X, 0, 65535, 2, 4);
1499         input_set_abs_params(wdata->extension.input,
1500                              ABS_HAT0Y, 0, 65535, 2, 4);
1501         input_set_abs_params(wdata->extension.input,
1502                              ABS_HAT1X, 0, 65535, 2, 4);
1503         input_set_abs_params(wdata->extension.input,
1504                              ABS_HAT1Y, 0, 65535, 2, 4);
1505
1506         ret = input_register_device(wdata->extension.input);
1507         if (ret)
1508                 goto err_file;
1509
1510         return 0;
1511
1512 err_file:
1513         device_remove_file(&wdata->hdev->dev,
1514                            &dev_attr_bboard_calib);
1515 err_free:
1516         input_free_device(wdata->extension.input);
1517         wdata->extension.input = NULL;
1518         return ret;
1519 }
1520
1521 static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1522                                  struct wiimote_data *wdata)
1523 {
1524         if (!wdata->extension.input)
1525                 return;
1526
1527         input_unregister_device(wdata->extension.input);
1528         wdata->extension.input = NULL;
1529         device_remove_file(&wdata->hdev->dev,
1530                            &dev_attr_bboard_calib);
1531 }
1532
1533 static const struct wiimod_ops wiimod_bboard = {
1534         .flags = WIIMOD_FLAG_EXT8,
1535         .arg = 0,
1536         .probe = wiimod_bboard_probe,
1537         .remove = wiimod_bboard_remove,
1538         .in_keys = wiimod_bboard_in_keys,
1539         .in_ext = wiimod_bboard_in_ext,
1540 };
1541
1542 /*
1543  * Motion Plus
1544  * The Motion Plus extension provides rotation sensors (gyro) as a small
1545  * extension device for Wii Remotes. Many devices have them built-in so
1546  * you cannot see them from the outside.
1547  * Motion Plus extensions are special because they are on a separate extension
1548  * port and allow other extensions to be used simultaneously. This is all
1549  * handled by the Wiimote Core so we don't have to deal with it.
1550  */
1551
1552 static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
1553 {
1554         __s32 x, y, z;
1555
1556         /*        |   8    7    6    5    4    3 |  2  |  1  |
1557          *   -----+------------------------------+-----+-----+
1558          *    1   |               Yaw Speed <7:0>            |
1559          *    2   |              Roll Speed <7:0>            |
1560          *    3   |             Pitch Speed <7:0>            |
1561          *   -----+------------------------------+-----+-----+
1562          *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
1563          *   -----+------------------------------+-----+-----+
1564          *    5   |      Roll Speed <13:8>       |Roll | Ext |
1565          *   -----+------------------------------+-----+-----+
1566          *    6   |     Pitch Speed <13:8>       |  1  |  0  |
1567          *   -----+------------------------------+-----+-----+
1568          * The single bits Yaw, Roll, Pitch in the lower right corner specify
1569          * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
1570          * roation is 440 deg/s and for fast rotation 2000 deg/s. To get a
1571          * linear scale we multiply by 2000/440 = ~4.5454 which is 18 for fast
1572          * and 9 for slow.
1573          * If the wiimote is not rotating the sensor reports 2^13 = 8192.
1574          * Ext specifies whether an extension is connected to the motionp.
1575          * which is parsed by wiimote-core.
1576          */
1577
1578         x = ext[0];
1579         y = ext[1];
1580         z = ext[2];
1581
1582         x |= (((__u16)ext[3]) << 6) & 0xff00;
1583         y |= (((__u16)ext[4]) << 6) & 0xff00;
1584         z |= (((__u16)ext[5]) << 6) & 0xff00;
1585
1586         x -= 8192;
1587         y -= 8192;
1588         z -= 8192;
1589
1590         if (!(ext[3] & 0x02))
1591                 x *= 18;
1592         else
1593                 x *= 9;
1594         if (!(ext[4] & 0x02))
1595                 y *= 18;
1596         else
1597                 y *= 9;
1598         if (!(ext[3] & 0x01))
1599                 z *= 18;
1600         else
1601                 z *= 9;
1602
1603         input_report_abs(wdata->mp, ABS_RX, x);
1604         input_report_abs(wdata->mp, ABS_RY, y);
1605         input_report_abs(wdata->mp, ABS_RZ, z);
1606         input_sync(wdata->mp);
1607 }
1608
1609 static int wiimod_mp_open(struct input_dev *dev)
1610 {
1611         struct wiimote_data *wdata = input_get_drvdata(dev);
1612         unsigned long flags;
1613
1614         spin_lock_irqsave(&wdata->state.lock, flags);
1615         wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
1616         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1617         __wiimote_schedule(wdata);
1618         spin_unlock_irqrestore(&wdata->state.lock, flags);
1619
1620         return 0;
1621 }
1622
1623 static void wiimod_mp_close(struct input_dev *dev)
1624 {
1625         struct wiimote_data *wdata = input_get_drvdata(dev);
1626         unsigned long flags;
1627
1628         spin_lock_irqsave(&wdata->state.lock, flags);
1629         wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
1630         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1631         __wiimote_schedule(wdata);
1632         spin_unlock_irqrestore(&wdata->state.lock, flags);
1633 }
1634
1635 static int wiimod_mp_probe(const struct wiimod_ops *ops,
1636                            struct wiimote_data *wdata)
1637 {
1638         int ret;
1639
1640         wdata->mp = input_allocate_device();
1641         if (!wdata->mp)
1642                 return -ENOMEM;
1643
1644         input_set_drvdata(wdata->mp, wdata);
1645         wdata->mp->open = wiimod_mp_open;
1646         wdata->mp->close = wiimod_mp_close;
1647         wdata->mp->dev.parent = &wdata->hdev->dev;
1648         wdata->mp->id.bustype = wdata->hdev->bus;
1649         wdata->mp->id.vendor = wdata->hdev->vendor;
1650         wdata->mp->id.product = wdata->hdev->product;
1651         wdata->mp->id.version = wdata->hdev->version;
1652         wdata->mp->name = WIIMOTE_NAME " Motion Plus";
1653
1654         set_bit(EV_ABS, wdata->mp->evbit);
1655         set_bit(ABS_RX, wdata->mp->absbit);
1656         set_bit(ABS_RY, wdata->mp->absbit);
1657         set_bit(ABS_RZ, wdata->mp->absbit);
1658         input_set_abs_params(wdata->mp,
1659                              ABS_RX, -16000, 16000, 4, 8);
1660         input_set_abs_params(wdata->mp,
1661                              ABS_RY, -16000, 16000, 4, 8);
1662         input_set_abs_params(wdata->mp,
1663                              ABS_RZ, -16000, 16000, 4, 8);
1664
1665         ret = input_register_device(wdata->mp);
1666         if (ret)
1667                 goto err_free;
1668
1669         return 0;
1670
1671 err_free:
1672         input_free_device(wdata->mp);
1673         wdata->mp = NULL;
1674         return ret;
1675 }
1676
1677 static void wiimod_mp_remove(const struct wiimod_ops *ops,
1678                              struct wiimote_data *wdata)
1679 {
1680         if (!wdata->mp)
1681                 return;
1682
1683         input_unregister_device(wdata->mp);
1684         wdata->mp = NULL;
1685 }
1686
1687 const struct wiimod_ops wiimod_mp = {
1688         .flags = 0,
1689         .arg = 0,
1690         .probe = wiimod_mp_probe,
1691         .remove = wiimod_mp_remove,
1692         .in_mp = wiimod_mp_in_mp,
1693 };
1694
1695 /* module table */
1696
1697 static const struct wiimod_ops wiimod_dummy;
1698
1699 const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
1700         [WIIMOD_KEYS] = &wiimod_keys,
1701         [WIIMOD_RUMBLE] = &wiimod_rumble,
1702         [WIIMOD_BATTERY] = &wiimod_battery,
1703         [WIIMOD_LED1] = &wiimod_leds[0],
1704         [WIIMOD_LED2] = &wiimod_leds[1],
1705         [WIIMOD_LED3] = &wiimod_leds[2],
1706         [WIIMOD_LED4] = &wiimod_leds[3],
1707         [WIIMOD_ACCEL] = &wiimod_accel,
1708         [WIIMOD_IR] = &wiimod_ir,
1709 };
1710
1711 const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
1712         [WIIMOTE_EXT_NONE] = &wiimod_dummy,
1713         [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
1714         [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
1715         [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
1716         [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
1717 };