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 /* used by wiimod_rumble and wiipro_rumble */
 123 static void wiimod_rumble_worker(struct work_struct *work)
 124 {
 125         struct wiimote_data *wdata = container_of(work, struct wiimote_data,
 126                                                   rumble_worker);
 127
 128         spin_lock_irq(&wdata->state.lock);
 129         wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
 130         spin_unlock_irq(&wdata->state.lock);
 131 }
 132
 133 static int wiimod_rumble_play(struct input_dev *dev, void *data,
 134                               struct ff_effect *eff)
 135 {
 136         struct wiimote_data *wdata = input_get_drvdata(dev);
 137         __u8 value;
 138
 139         /*
 140          * The wiimote supports only a single rumble motor so if any magnitude
 141          * is set to non-zero then we start the rumble motor. If both are set to
 142          * zero, we stop the rumble motor.
 143          */
 144
 145         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 146                 value = 1;
 147         else
 148                 value = 0;
 149
 150         /* Locking state.lock here might deadlock with input_event() calls.
 151          * schedule_work acts as barrier. Merging multiple changes is fine. */
 152         wdata->state.cache_rumble = value;
 153         schedule_work(&wdata->rumble_worker);
 154
 155         return 0;
 156 }
 157
 158 static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 159                                struct wiimote_data *wdata)
 160 {
 161         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
 162
 163         set_bit(FF_RUMBLE, wdata->input->ffbit);
 164         if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 165                 return -ENOMEM;
 166
 167         return 0;
 168 }
 169
 170 static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 171                                  struct wiimote_data *wdata)
 172 {
 173         unsigned long flags;
 174
 175         cancel_work_sync(&wdata->rumble_worker);
 176
 177         spin_lock_irqsave(&wdata->state.lock, flags);
 178         wiiproto_req_rumble(wdata, 0);
 179         spin_unlock_irqrestore(&wdata->state.lock, flags);
 180 }
 181
 182 static const struct wiimod_ops wiimod_rumble = {
 183         .flags = WIIMOD_FLAG_INPUT,
 184         .arg = 0,
 185         .probe = wiimod_rumble_probe,
 186         .remove = wiimod_rumble_remove,
 187 };
 188
 189 /*
 190  * Battery
 191  * 1 byte of battery capacity information is sent along every protocol status
 192  * report. The wiimote core caches it but we try to update it on every
 193  * user-space request.
 194  * This is supported by nearly every device so it's almost always enabled.
 195  */
 196
 197 static enum power_supply_property wiimod_battery_props[] = {
 198         POWER_SUPPLY_PROP_CAPACITY,
 199         POWER_SUPPLY_PROP_SCOPE,
 200 };
 201
 202 static int wiimod_battery_get_property(struct power_supply *psy,
 203                                        enum power_supply_property psp,
 204                                        union power_supply_propval *val)
 205 {
 206         struct wiimote_data *wdata = power_supply_get_drvdata(psy);
 207         int ret = 0, state;
 208         unsigned long flags;
 209
 210         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 211                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 212                 return 0;
 213         } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 214                 return -EINVAL;
 215         }
 216
 217         ret = wiimote_cmd_acquire(wdata);
 218         if (ret)
 219                 return ret;
 220
 221         spin_lock_irqsave(&wdata->state.lock, flags);
 222         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 223         wiiproto_req_status(wdata);
 224         spin_unlock_irqrestore(&wdata->state.lock, flags);
 225
 226         wiimote_cmd_wait(wdata);
 227         wiimote_cmd_release(wdata);
 228
 229         spin_lock_irqsave(&wdata->state.lock, flags);
 230         state = wdata->state.cmd_battery;
 231         spin_unlock_irqrestore(&wdata->state.lock, flags);
 232
 233         val->intval = state * 100 / 255;
 234         return ret;
 235 }
 236
 237 static int wiimod_battery_probe(const struct wiimod_ops *ops,
 238                                 struct wiimote_data *wdata)
 239 {
 240         struct power_supply_config psy_cfg = { .drv_data = wdata, };
 241         int ret;
 242
 243         wdata->battery_desc.properties = wiimod_battery_props;
 244         wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
 245         wdata->battery_desc.get_property = wiimod_battery_get_property;
 246         wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 247         wdata->battery_desc.use_for_apm = 0;
 248         wdata->battery_desc.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 249                                              wdata->hdev->uniq);
 250         if (!wdata->battery_desc.name)
 251                 return -ENOMEM;
 252
 253         wdata->battery = power_supply_register(&wdata->hdev->dev,
 254                                                &wdata->battery_desc,
 255                                                &psy_cfg);
 256         if (IS_ERR(wdata->battery)) {
 257                 hid_err(wdata->hdev, "cannot register battery device\n");
 258                 ret = PTR_ERR(wdata->battery);
 259                 goto err_free;
 260         }
 261
 262         power_supply_powers(wdata->battery, &wdata->hdev->dev);
 263         return 0;
 264
 265 err_free:
 266         kfree(wdata->battery_desc.name);
 267         wdata->battery_desc.name = NULL;
 268         return ret;
 269 }
 270
 271 static void wiimod_battery_remove(const struct wiimod_ops *ops,
 272                                   struct wiimote_data *wdata)
 273 {
 274         if (!wdata->battery_desc.name)
 275                 return;
 276
 277         power_supply_unregister(wdata->battery);
 278         kfree(wdata->battery_desc.name);
 279         wdata->battery_desc.name = NULL;
 280 }
 281
 282 static const struct wiimod_ops wiimod_battery = {
 283         .flags = 0,
 284         .arg = 0,
 285         .probe = wiimod_battery_probe,
 286         .remove = wiimod_battery_remove,
 287 };
 288
 289 /*
 290  * LED
 291  * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 292  * wiimod_ops structure specifies which LED this module controls. This allows
 293  * to register a limited number of LEDs.
 294  * State is managed by wiimote core.
 295  */
 296
 297 static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
 298 {
 299         struct device *dev = led_dev->dev->parent;
 300         struct wiimote_data *wdata = dev_to_wii(dev);
 301         int i;
 302         unsigned long flags;
 303         bool value = false;
 304
 305         for (i = 0; i < 4; ++i) {
 306                 if (wdata->leds[i] == led_dev) {
 307                         spin_lock_irqsave(&wdata->state.lock, flags);
 308                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 309                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 310                         break;
 311                 }
 312         }
 313
 314         return value ? LED_FULL : LED_OFF;
 315 }
 316
 317 static void wiimod_led_set(struct led_classdev *led_dev,
 318                            enum led_brightness value)
 319 {
 320         struct device *dev = led_dev->dev->parent;
 321         struct wiimote_data *wdata = dev_to_wii(dev);
 322         int i;
 323         unsigned long flags;
 324         __u8 state, flag;
 325
 326         for (i = 0; i < 4; ++i) {
 327                 if (wdata->leds[i] == led_dev) {
 328                         flag = WIIPROTO_FLAG_LED(i + 1);
 329                         spin_lock_irqsave(&wdata->state.lock, flags);
 330                         state = wdata->state.flags;
 331                         if (value == LED_OFF)
 332                                 wiiproto_req_leds(wdata, state & ~flag);
 333                         else
 334                                 wiiproto_req_leds(wdata, state | flag);
 335                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 336                         break;
 337                 }
 338         }
 339 }
 340
 341 static int wiimod_led_probe(const struct wiimod_ops *ops,
 342                             struct wiimote_data *wdata)
 343 {
 344         struct device *dev = &wdata->hdev->dev;
 345         size_t namesz = strlen(dev_name(dev)) + 9;
 346         struct led_classdev *led;
 347         unsigned long flags;
 348         char *name;
 349         int ret;
 350
 351         led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 352         if (!led)
 353                 return -ENOMEM;
 354
 355         name = (void*)&led[1];
 356         snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 357         led->name = name;
 358         led->brightness = 0;
 359         led->max_brightness = 1;
 360         led->brightness_get = wiimod_led_get;
 361         led->brightness_set = wiimod_led_set;
 362
 363         wdata->leds[ops->arg] = led;
 364         ret = led_classdev_register(dev, led);
 365         if (ret)
 366                 goto err_free;
 367
 368         /* enable LED1 to stop initial LED-blinking */
 369         if (ops->arg == 0) {
 370                 spin_lock_irqsave(&wdata->state.lock, flags);
 371                 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 372                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 373         }
 374
 375         return 0;
 376
 377 err_free:
 378         wdata->leds[ops->arg] = NULL;
 379         kfree(led);
 380         return ret;
 381 }
 382
 383 static void wiimod_led_remove(const struct wiimod_ops *ops,
 384                               struct wiimote_data *wdata)
 385 {
 386         if (!wdata->leds[ops->arg])
 387                 return;
 388
 389         led_classdev_unregister(wdata->leds[ops->arg]);
 390         kfree(wdata->leds[ops->arg]);
 391         wdata->leds[ops->arg] = NULL;
 392 }
 393
 394 static const struct wiimod_ops wiimod_leds[4] = {
 395         {
 396                 .flags = 0,
 397                 .arg = 0,
 398                 .probe = wiimod_led_probe,
 399                 .remove = wiimod_led_remove,
 400         },
 401         {
 402                 .flags = 0,
 403                 .arg = 1,
 404                 .probe = wiimod_led_probe,
 405                 .remove = wiimod_led_remove,
 406         },
 407         {
 408                 .flags = 0,
 409                 .arg = 2,
 410                 .probe = wiimod_led_probe,
 411                 .remove = wiimod_led_remove,
 412         },
 413         {
 414                 .flags = 0,
 415                 .arg = 3,
 416                 .probe = wiimod_led_probe,
 417                 .remove = wiimod_led_remove,
 418         },
 419 };
 420
 421 /*
 422  * Accelerometer
 423  * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 424  * device, it's mostly cleared to 0. This module parses this data and provides
 425  * it via a separate input device.
 426  */
 427
 428 static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 429                                   const __u8 *accel)
 430 {
 431         __u16 x, y, z;
 432
 433         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 434                 return;
 435
 436         /*
 437          * payload is: BB BB XX YY ZZ
 438          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 439          * contain the upper 8 bits of each value. The lower 2 bits are
 440          * contained in the buttons data BB BB.
 441          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 442          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 443          * accel value and bit 6 is the second bit of the Z value.
 444          * The first bit of Y and Z values is not available and always set to 0.
 445          * 0x200 is returned on no movement.
 446          */
 447
 448         x = accel[2] << 2;
 449         y = accel[3] << 2;
 450         z = accel[4] << 2;
 451
 452         x |= (accel[0] >> 5) & 0x3;
 453         y |= (accel[1] >> 4) & 0x2;
 454         z |= (accel[1] >> 5) & 0x2;
 455
 456         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 457         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 458         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 459         input_sync(wdata->accel);
 460 }
 461
 462 static int wiimod_accel_open(struct input_dev *dev)
 463 {
 464         struct wiimote_data *wdata = input_get_drvdata(dev);
 465         unsigned long flags;
 466
 467         spin_lock_irqsave(&wdata->state.lock, flags);
 468         wiiproto_req_accel(wdata, true);
 469         spin_unlock_irqrestore(&wdata->state.lock, flags);
 470
 471         return 0;
 472 }
 473
 474 static void wiimod_accel_close(struct input_dev *dev)
 475 {
 476         struct wiimote_data *wdata = input_get_drvdata(dev);
 477         unsigned long flags;
 478
 479         spin_lock_irqsave(&wdata->state.lock, flags);
 480         wiiproto_req_accel(wdata, false);
 481         spin_unlock_irqrestore(&wdata->state.lock, flags);
 482 }
 483
 484 static int wiimod_accel_probe(const struct wiimod_ops *ops,
 485                               struct wiimote_data *wdata)
 486 {
 487         int ret;
 488
 489         wdata->accel = input_allocate_device();
 490         if (!wdata->accel)
 491                 return -ENOMEM;
 492
 493         input_set_drvdata(wdata->accel, wdata);
 494         wdata->accel->open = wiimod_accel_open;
 495         wdata->accel->close = wiimod_accel_close;
 496         wdata->accel->dev.parent = &wdata->hdev->dev;
 497         wdata->accel->id.bustype = wdata->hdev->bus;
 498         wdata->accel->id.vendor = wdata->hdev->vendor;
 499         wdata->accel->id.product = wdata->hdev->product;
 500         wdata->accel->id.version = wdata->hdev->version;
 501         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 502
 503         set_bit(EV_ABS, wdata->accel->evbit);
 504         set_bit(ABS_RX, wdata->accel->absbit);
 505         set_bit(ABS_RY, wdata->accel->absbit);
 506         set_bit(ABS_RZ, wdata->accel->absbit);
 507         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 508         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 509         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 510
 511         ret = input_register_device(wdata->accel);
 512         if (ret) {
 513                 hid_err(wdata->hdev, "cannot register input device\n");
 514                 goto err_free;
 515         }
 516
 517         return 0;
 518
 519 err_free:
 520         input_free_device(wdata->accel);
 521         wdata->accel = NULL;
 522         return ret;
 523 }
 524
 525 static void wiimod_accel_remove(const struct wiimod_ops *ops,
 526                                 struct wiimote_data *wdata)
 527 {
 528         if (!wdata->accel)
 529                 return;
 530
 531         input_unregister_device(wdata->accel);
 532         wdata->accel = NULL;
 533 }
 534
 535 static const struct wiimod_ops wiimod_accel = {
 536         .flags = 0,
 537         .arg = 0,
 538         .probe = wiimod_accel_probe,
 539         .remove = wiimod_accel_remove,
 540         .in_accel = wiimod_accel_in_accel,
 541 };
 542
 543 /*
 544  * IR Cam
 545  * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 546  * to be initialized with a fairly complex procedure and consumes a lot of
 547  * power. Therefore, as long as no application uses the IR input device, it is
 548  * kept offline.
 549  * Nearly no other device than the normal Wii Remotes supports the IR cam so
 550  * you can disable this module for these devices.
 551  */
 552
 553 static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 554                             bool packed, unsigned int id)
 555 {
 556         __u16 x, y;
 557         __u8 xid, yid;
 558         bool sync = false;
 559
 560         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 561                 return;
 562
 563         switch (id) {
 564         case 0:
 565                 xid = ABS_HAT0X;
 566                 yid = ABS_HAT0Y;
 567                 break;
 568         case 1:
 569                 xid = ABS_HAT1X;
 570                 yid = ABS_HAT1Y;
 571                 break;
 572         case 2:
 573                 xid = ABS_HAT2X;
 574                 yid = ABS_HAT2Y;
 575                 break;
 576         case 3:
 577                 xid = ABS_HAT3X;
 578                 yid = ABS_HAT3Y;
 579                 sync = true;
 580                 break;
 581         default:
 582                 return;
 583         }
 584
 585         /*
 586          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 587          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 588          * of both.
 589          * If data is packed, then the 3rd byte is put first and slightly
 590          * reordered. This allows to interleave packed and non-packed data to
 591          * have two IR sets in 5 bytes instead of 6.
 592          * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 593          */
 594
 595         if (packed) {
 596                 x = ir[1] | ((ir[0] & 0x03) << 8);
 597                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 598         } else {
 599                 x = ir[0] | ((ir[2] & 0x30) << 4);
 600                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 601         }
 602
 603         input_report_abs(wdata->ir, xid, x);
 604         input_report_abs(wdata->ir, yid, y);
 605
 606         if (sync)
 607                 input_sync(wdata->ir);
 608 }
 609
 610 static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 611 {
 612         int ret;
 613         unsigned long flags;
 614         __u8 format = 0;
 615         static const __u8 data_enable[] = { 0x01 };
 616         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 617                                                 0x00, 0xaa, 0x00, 0x64 };
 618         static const __u8 data_sens2[] = { 0x63, 0x03 };
 619         static const __u8 data_fin[] = { 0x08 };
 620
 621         spin_lock_irqsave(&wdata->state.lock, flags);
 622
 623         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 624                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 625                 return 0;
 626         }
 627
 628         if (mode == 0) {
 629                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 630                 wiiproto_req_ir1(wdata, 0);
 631                 wiiproto_req_ir2(wdata, 0);
 632                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 633                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 634                 return 0;
 635         }
 636
 637         spin_unlock_irqrestore(&wdata->state.lock, flags);
 638
 639         ret = wiimote_cmd_acquire(wdata);
 640         if (ret)
 641                 return ret;
 642
 643         /* send PIXEL CLOCK ENABLE cmd first */
 644         spin_lock_irqsave(&wdata->state.lock, flags);
 645         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 646         wiiproto_req_ir1(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 LOGIC */
 658         spin_lock_irqsave(&wdata->state.lock, flags);
 659         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 660         wiiproto_req_ir2(wdata, 0x06);
 661         spin_unlock_irqrestore(&wdata->state.lock, flags);
 662
 663         ret = wiimote_cmd_wait(wdata);
 664         if (ret)
 665                 goto unlock;
 666         if (wdata->state.cmd_err) {
 667                 ret = -EIO;
 668                 goto unlock;
 669         }
 670
 671         /* enable IR cam but do not make it send data, yet */
 672         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 673                                                         sizeof(data_enable));
 674         if (ret)
 675                 goto unlock;
 676
 677         /* write first sensitivity block */
 678         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 679                                                         sizeof(data_sens1));
 680         if (ret)
 681                 goto unlock;
 682
 683         /* write second sensitivity block */
 684         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 685                                                         sizeof(data_sens2));
 686         if (ret)
 687                 goto unlock;
 688
 689         /* put IR cam into desired state */
 690         switch (mode) {
 691                 case WIIPROTO_FLAG_IR_FULL:
 692                         format = 5;
 693                         break;
 694                 case WIIPROTO_FLAG_IR_EXT:
 695                         format = 3;
 696                         break;
 697                 case WIIPROTO_FLAG_IR_BASIC:
 698                         format = 1;
 699                         break;
 700         }
 701         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 702         if (ret)
 703                 goto unlock;
 704
 705         /* make IR cam send data */
 706         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 707         if (ret)
 708                 goto unlock;
 709
 710         /* request new DRM mode compatible to IR mode */
 711         spin_lock_irqsave(&wdata->state.lock, flags);
 712         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 713         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 714         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 715         spin_unlock_irqrestore(&wdata->state.lock, flags);
 716
 717 unlock:
 718         wiimote_cmd_release(wdata);
 719         return ret;
 720 }
 721
 722 static int wiimod_ir_open(struct input_dev *dev)
 723 {
 724         struct wiimote_data *wdata = input_get_drvdata(dev);
 725
 726         return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 727 }
 728
 729 static void wiimod_ir_close(struct input_dev *dev)
 730 {
 731         struct wiimote_data *wdata = input_get_drvdata(dev);
 732
 733         wiimod_ir_change(wdata, 0);
 734 }
 735
 736 static int wiimod_ir_probe(const struct wiimod_ops *ops,
 737                            struct wiimote_data *wdata)
 738 {
 739         int ret;
 740
 741         wdata->ir = input_allocate_device();
 742         if (!wdata->ir)
 743                 return -ENOMEM;
 744
 745         input_set_drvdata(wdata->ir, wdata);
 746         wdata->ir->open = wiimod_ir_open;
 747         wdata->ir->close = wiimod_ir_close;
 748         wdata->ir->dev.parent = &wdata->hdev->dev;
 749         wdata->ir->id.bustype = wdata->hdev->bus;
 750         wdata->ir->id.vendor = wdata->hdev->vendor;
 751         wdata->ir->id.product = wdata->hdev->product;
 752         wdata->ir->id.version = wdata->hdev->version;
 753         wdata->ir->name = WIIMOTE_NAME " IR";
 754
 755         set_bit(EV_ABS, wdata->ir->evbit);
 756         set_bit(ABS_HAT0X, wdata->ir->absbit);
 757         set_bit(ABS_HAT0Y, wdata->ir->absbit);
 758         set_bit(ABS_HAT1X, wdata->ir->absbit);
 759         set_bit(ABS_HAT1Y, wdata->ir->absbit);
 760         set_bit(ABS_HAT2X, wdata->ir->absbit);
 761         set_bit(ABS_HAT2Y, wdata->ir->absbit);
 762         set_bit(ABS_HAT3X, wdata->ir->absbit);
 763         set_bit(ABS_HAT3Y, wdata->ir->absbit);
 764         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 765         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 766         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 767         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 768         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 769         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 770         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 771         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 772
 773         ret = input_register_device(wdata->ir);
 774         if (ret) {
 775                 hid_err(wdata->hdev, "cannot register input device\n");
 776                 goto err_free;
 777         }
 778
 779         return 0;
 780
 781 err_free:
 782         input_free_device(wdata->ir);
 783         wdata->ir = NULL;
 784         return ret;
 785 }
 786
 787 static void wiimod_ir_remove(const struct wiimod_ops *ops,
 788                              struct wiimote_data *wdata)
 789 {
 790         if (!wdata->ir)
 791                 return;
 792
 793         input_unregister_device(wdata->ir);
 794         wdata->ir = NULL;
 795 }
 796
 797 static const struct wiimod_ops wiimod_ir = {
 798         .flags = 0,
 799         .arg = 0,
 800         .probe = wiimod_ir_probe,
 801         .remove = wiimod_ir_remove,
 802         .in_ir = wiimod_ir_in_ir,
 803 };
 804
 805 /*
 806  * Nunchuk Extension
 807  * The Nintendo Wii Nunchuk was the first official extension published by
 808  * Nintendo. It provides two additional keys and a separate accelerometer. It
 809  * can be hotplugged to standard Wii Remotes.
 810  */
 811
 812 enum wiimod_nunchuk_keys {
 813         WIIMOD_NUNCHUK_KEY_C,
 814         WIIMOD_NUNCHUK_KEY_Z,
 815         WIIMOD_NUNCHUK_KEY_NUM,
 816 };
 817
 818 static const __u16 wiimod_nunchuk_map[] = {
 819         BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 820         BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 821 };
 822
 823 static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 824 {
 825         __s16 x, y, z, bx, by;
 826
 827         /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 828          *   -----+----------+---------+---------+----+-----+
 829          *    1   |              Button X <7:0>             |
 830          *    2   |              Button Y <7:0>             |
 831          *   -----+----------+---------+---------+----+-----+
 832          *    3   |               Speed X <9:2>             |
 833          *    4   |               Speed Y <9:2>             |
 834          *    5   |               Speed Z <9:2>             |
 835          *   -----+----------+---------+---------+----+-----+
 836          *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 837          *   -----+----------+---------+---------+----+-----+
 838          * Button X/Y is the analog stick. Speed X, Y and Z are the
 839          * accelerometer data in the same format as the wiimote's accelerometer.
 840          * The 6th byte contains the LSBs of the accelerometer data.
 841          * BC and BZ are the C and Z buttons: 0 means pressed
 842          *
 843          * If reported interleaved with motionp, then the layout changes. The
 844          * 5th and 6th byte changes to:
 845          *   -----+-----------------------------------+-----+
 846          *    5   |            Speed Z <9:3>          | EXT |
 847          *   -----+--------+-----+-----+----+----+----+-----+
 848          *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 849          *   -----+--------+-----+-----+----+----+----+-----+
 850          * All three accelerometer values lose their LSB. The other data is
 851          * still available but slightly moved.
 852          *
 853          * Center data for button values is 128. Center value for accelerometer
 854          * values it 512 / 0x200
 855          */
 856
 857         bx = ext[0];
 858         by = ext[1];
 859         bx -= 128;
 860         by -= 128;
 861
 862         x = ext[2] << 2;
 863         y = ext[3] << 2;
 864         z = ext[4] << 2;
 865
 866         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 867                 x |= (ext[5] >> 3) & 0x02;
 868                 y |= (ext[5] >> 4) & 0x02;
 869                 z &= ~0x4;
 870                 z |= (ext[5] >> 5) & 0x06;
 871         } else {
 872                 x |= (ext[5] >> 2) & 0x03;
 873                 y |= (ext[5] >> 4) & 0x03;
 874                 z |= (ext[5] >> 6) & 0x03;
 875         }
 876
 877         x -= 0x200;
 878         y -= 0x200;
 879         z -= 0x200;
 880
 881         input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 882         input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 883
 884         input_report_abs(wdata->extension.input, ABS_RX, x);
 885         input_report_abs(wdata->extension.input, ABS_RY, y);
 886         input_report_abs(wdata->extension.input, ABS_RZ, z);
 887
 888         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 889                 input_report_key(wdata->extension.input,
 890                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 891                         !(ext[5] & 0x04));
 892                 input_report_key(wdata->extension.input,
 893                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 894                         !(ext[5] & 0x08));
 895         } else {
 896                 input_report_key(wdata->extension.input,
 897                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 898                         !(ext[5] & 0x01));
 899                 input_report_key(wdata->extension.input,
 900                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 901                         !(ext[5] & 0x02));
 902         }
 903
 904         input_sync(wdata->extension.input);
 905 }
 906
 907 static int wiimod_nunchuk_open(struct input_dev *dev)
 908 {
 909         struct wiimote_data *wdata = input_get_drvdata(dev);
 910         unsigned long flags;
 911
 912         spin_lock_irqsave(&wdata->state.lock, flags);
 913         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 914         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 915         spin_unlock_irqrestore(&wdata->state.lock, flags);
 916
 917         return 0;
 918 }
 919
 920 static void wiimod_nunchuk_close(struct input_dev *dev)
 921 {
 922         struct wiimote_data *wdata = input_get_drvdata(dev);
 923         unsigned long flags;
 924
 925         spin_lock_irqsave(&wdata->state.lock, flags);
 926         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 927         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 928         spin_unlock_irqrestore(&wdata->state.lock, flags);
 929 }
 930
 931 static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 932                                 struct wiimote_data *wdata)
 933 {
 934         int ret, i;
 935
 936         wdata->extension.input = input_allocate_device();
 937         if (!wdata->extension.input)
 938                 return -ENOMEM;
 939
 940         input_set_drvdata(wdata->extension.input, wdata);
 941         wdata->extension.input->open = wiimod_nunchuk_open;
 942         wdata->extension.input->close = wiimod_nunchuk_close;
 943         wdata->extension.input->dev.parent = &wdata->hdev->dev;
 944         wdata->extension.input->id.bustype = wdata->hdev->bus;
 945         wdata->extension.input->id.vendor = wdata->hdev->vendor;
 946         wdata->extension.input->id.product = wdata->hdev->product;
 947         wdata->extension.input->id.version = wdata->hdev->version;
 948         wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 949
 950         set_bit(EV_KEY, wdata->extension.input->evbit);
 951         for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 952                 set_bit(wiimod_nunchuk_map[i],
 953                         wdata->extension.input->keybit);
 954
 955         set_bit(EV_ABS, wdata->extension.input->evbit);
 956         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 957         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 958         input_set_abs_params(wdata->extension.input,
 959                              ABS_HAT0X, -120, 120, 2, 4);
 960         input_set_abs_params(wdata->extension.input,
 961                              ABS_HAT0Y, -120, 120, 2, 4);
 962         set_bit(ABS_RX, wdata->extension.input->absbit);
 963         set_bit(ABS_RY, wdata->extension.input->absbit);
 964         set_bit(ABS_RZ, wdata->extension.input->absbit);
 965         input_set_abs_params(wdata->extension.input,
 966                              ABS_RX, -500, 500, 2, 4);
 967         input_set_abs_params(wdata->extension.input,
 968                              ABS_RY, -500, 500, 2, 4);
 969         input_set_abs_params(wdata->extension.input,
 970                              ABS_RZ, -500, 500, 2, 4);
 971
 972         ret = input_register_device(wdata->extension.input);
 973         if (ret)
 974                 goto err_free;
 975
 976         return 0;
 977
 978 err_free:
 979         input_free_device(wdata->extension.input);
 980         wdata->extension.input = NULL;
 981         return ret;
 982 }
 983
 984 static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 985                                   struct wiimote_data *wdata)
 986 {
 987         if (!wdata->extension.input)
 988                 return;
 989
 990         input_unregister_device(wdata->extension.input);
 991         wdata->extension.input = NULL;
 992 }
 993
 994 static const struct wiimod_ops wiimod_nunchuk = {
 995         .flags = 0,
 996         .arg = 0,
 997         .probe = wiimod_nunchuk_probe,
 998         .remove = wiimod_nunchuk_remove,
 999         .in_ext = wiimod_nunchuk_in_ext,
1000 };
1001
1002 /*
1003  * Classic Controller
1004  * Another official extension from Nintendo. It provides a classic
1005  * gamecube-like controller that can be hotplugged on the Wii Remote.
1006  * It has several hardware buttons and switches that are all reported via
1007  * a normal extension device.
1008  */
1009
1010 enum wiimod_classic_keys {
1011         WIIMOD_CLASSIC_KEY_A,
1012         WIIMOD_CLASSIC_KEY_B,
1013         WIIMOD_CLASSIC_KEY_X,
1014         WIIMOD_CLASSIC_KEY_Y,
1015         WIIMOD_CLASSIC_KEY_ZL,
1016         WIIMOD_CLASSIC_KEY_ZR,
1017         WIIMOD_CLASSIC_KEY_PLUS,
1018         WIIMOD_CLASSIC_KEY_MINUS,
1019         WIIMOD_CLASSIC_KEY_HOME,
1020         WIIMOD_CLASSIC_KEY_LEFT,
1021         WIIMOD_CLASSIC_KEY_RIGHT,
1022         WIIMOD_CLASSIC_KEY_UP,
1023         WIIMOD_CLASSIC_KEY_DOWN,
1024         WIIMOD_CLASSIC_KEY_LT,
1025         WIIMOD_CLASSIC_KEY_RT,
1026         WIIMOD_CLASSIC_KEY_NUM,
1027 };
1028
1029 static const __u16 wiimod_classic_map[] = {
1030         BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1031         BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1032         BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1033         BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1034         BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1035         BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1036         KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1037         KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1038         BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1039         KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1040         KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1041         KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1042         KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1043         BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1044         BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1045 };
1046
1047 static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1048 {
1049         __s8 rx, ry, lx, ly, lt, rt;
1050
1051         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1052          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1053          *    1   | RX <5:4>  |              LX <5:0>             |
1054          *    2   | RX <3:2>  |              LY <5:0>             |
1055          *   -----+-----+-----+-----+-----------------------------+
1056          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1057          *   -----+-----+-----------+-----------------------------+
1058          *    4   |     LT <3:1>    |         RT <5:1>            |
1059          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1060          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1061          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1062          *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1063          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1064          * All buttons are 0 if pressed
1065          * RX and RY are right analog stick
1066          * LX and LY are left analog stick
1067          * LT is left trigger, RT is right trigger
1068          * BLT is 0 if left trigger is fully pressed
1069          * BRT is 0 if right trigger is fully pressed
1070          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1071          * BZL is left Z button and BZR is right Z button
1072          * B-, BH, B+ are +, HOME and - buttons
1073          * BB, BY, BA, BX are A, B, X, Y buttons
1074          * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1075          *
1076          * With motionp enabled it changes slightly to this:
1077          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1078          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1079          *    1   | RX <5:4>  |          LX <5:1>           | BDU |
1080          *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1081          *   -----+-----+-----+-----+-----------------------+-----+
1082          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1083          *   -----+-----+-----------+-----------------------------+
1084          *    4   |     LT <3:1>    |         RT <5:1>            |
1085          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1086          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1087          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1088          *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1089          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1090          * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1091          * is the same as before.
1092          */
1093
1094         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1095                 lx = ext[0] & 0x3e;
1096                 ly = ext[1] & 0x3e;
1097         } else {
1098                 lx = ext[0] & 0x3f;
1099                 ly = ext[1] & 0x3f;
1100         }
1101
1102         rx = (ext[0] >> 3) & 0x18;
1103         rx |= (ext[1] >> 5) & 0x06;
1104         rx |= (ext[2] >> 7) & 0x01;
1105         ry = ext[2] & 0x1f;
1106
1107         rt = ext[3] & 0x1f;
1108         lt = (ext[2] >> 2) & 0x18;
1109         lt |= (ext[3] >> 5) & 0x07;
1110
1111         rx <<= 1;
1112         ry <<= 1;
1113         rt <<= 1;
1114         lt <<= 1;
1115
1116         input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
1117         input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
1118         input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1119         input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1120         input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
1121         input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1122
1123         input_report_key(wdata->extension.input,
1124                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1125                          !(ext[4] & 0x80));
1126         input_report_key(wdata->extension.input,
1127                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1128                          !(ext[4] & 0x40));
1129         input_report_key(wdata->extension.input,
1130                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1131                          !(ext[4] & 0x20));
1132         input_report_key(wdata->extension.input,
1133                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1134                          !(ext[4] & 0x10));
1135         input_report_key(wdata->extension.input,
1136                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1137                          !(ext[4] & 0x08));
1138         input_report_key(wdata->extension.input,
1139                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1140                          !(ext[4] & 0x04));
1141         input_report_key(wdata->extension.input,
1142                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1143                          !(ext[4] & 0x02));
1144         input_report_key(wdata->extension.input,
1145                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1146                          !(ext[5] & 0x80));
1147         input_report_key(wdata->extension.input,
1148                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1149                          !(ext[5] & 0x40));
1150         input_report_key(wdata->extension.input,
1151                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1152                          !(ext[5] & 0x20));
1153         input_report_key(wdata->extension.input,
1154                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1155                          !(ext[5] & 0x10));
1156         input_report_key(wdata->extension.input,
1157                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1158                          !(ext[5] & 0x08));
1159         input_report_key(wdata->extension.input,
1160                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1161                          !(ext[5] & 0x04));
1162
1163         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1164                 input_report_key(wdata->extension.input,
1165                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1166                          !(ext[1] & 0x01));
1167                 input_report_key(wdata->extension.input,
1168                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1169                          !(ext[0] & 0x01));
1170         } else {
1171                 input_report_key(wdata->extension.input,
1172                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1173                          !(ext[5] & 0x02));
1174                 input_report_key(wdata->extension.input,
1175                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1176                          !(ext[5] & 0x01));
1177         }
1178
1179         input_sync(wdata->extension.input);
1180 }
1181
1182 static int wiimod_classic_open(struct input_dev *dev)
1183 {
1184         struct wiimote_data *wdata = input_get_drvdata(dev);
1185         unsigned long flags;
1186
1187         spin_lock_irqsave(&wdata->state.lock, flags);
1188         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1189         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1190         spin_unlock_irqrestore(&wdata->state.lock, flags);
1191
1192         return 0;
1193 }
1194
1195 static void wiimod_classic_close(struct input_dev *dev)
1196 {
1197         struct wiimote_data *wdata = input_get_drvdata(dev);
1198         unsigned long flags;
1199
1200         spin_lock_irqsave(&wdata->state.lock, flags);
1201         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1202         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1203         spin_unlock_irqrestore(&wdata->state.lock, flags);
1204 }
1205
1206 static int wiimod_classic_probe(const struct wiimod_ops *ops,
1207                                 struct wiimote_data *wdata)
1208 {
1209         int ret, i;
1210
1211         wdata->extension.input = input_allocate_device();
1212         if (!wdata->extension.input)
1213                 return -ENOMEM;
1214
1215         input_set_drvdata(wdata->extension.input, wdata);
1216         wdata->extension.input->open = wiimod_classic_open;
1217         wdata->extension.input->close = wiimod_classic_close;
1218         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1219         wdata->extension.input->id.bustype = wdata->hdev->bus;
1220         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1221         wdata->extension.input->id.product = wdata->hdev->product;
1222         wdata->extension.input->id.version = wdata->hdev->version;
1223         wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1224
1225         set_bit(EV_KEY, wdata->extension.input->evbit);
1226         for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1227                 set_bit(wiimod_classic_map[i],
1228                         wdata->extension.input->keybit);
1229
1230         set_bit(EV_ABS, wdata->extension.input->evbit);
1231         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1232         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1233         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1234         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1235         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1236         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1237         input_set_abs_params(wdata->extension.input,
1238                              ABS_HAT1X, -30, 30, 1, 1);
1239         input_set_abs_params(wdata->extension.input,
1240                              ABS_HAT1Y, -30, 30, 1, 1);
1241         input_set_abs_params(wdata->extension.input,
1242                              ABS_HAT2X, -30, 30, 1, 1);
1243         input_set_abs_params(wdata->extension.input,
1244                              ABS_HAT2Y, -30, 30, 1, 1);
1245         input_set_abs_params(wdata->extension.input,
1246                              ABS_HAT3X, -30, 30, 1, 1);
1247         input_set_abs_params(wdata->extension.input,
1248                              ABS_HAT3Y, -30, 30, 1, 1);
1249
1250         ret = input_register_device(wdata->extension.input);
1251         if (ret)
1252                 goto err_free;
1253
1254         return 0;
1255
1256 err_free:
1257         input_free_device(wdata->extension.input);
1258         wdata->extension.input = NULL;
1259         return ret;
1260 }
1261
1262 static void wiimod_classic_remove(const struct wiimod_ops *ops,
1263                                   struct wiimote_data *wdata)
1264 {
1265         if (!wdata->extension.input)
1266                 return;
1267
1268         input_unregister_device(wdata->extension.input);
1269         wdata->extension.input = NULL;
1270 }
1271
1272 static const struct wiimod_ops wiimod_classic = {
1273         .flags = 0,
1274         .arg = 0,
1275         .probe = wiimod_classic_probe,
1276         .remove = wiimod_classic_remove,
1277         .in_ext = wiimod_classic_in_ext,
1278 };
1279
1280 /*
1281  * Balance Board Extension
1282  * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1283  * single push button. No other peripherals are available. However, the
1284  * balance-board data is sent via a standard Wii Remote extension. All other
1285  * data for non-present hardware is zeroed out.
1286  * Some 3rd party devices react allergic if we try to access normal Wii Remote
1287  * hardware, so this extension module should be the only module that is loaded
1288  * on balance boards.
1289  * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1290  * it needs the WIIMOD_FLAG_EXT8 flag.
1291  */
1292
1293 static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1294 {
1295         input_report_key(wdata->extension.input, BTN_A,
1296                          !!(keys[1] & 0x08));
1297         input_sync(wdata->extension.input);
1298 }
1299
1300 static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1301                                  const __u8 *ext)
1302 {
1303         __s32 val[4], tmp, div;
1304         unsigned int i;
1305         struct wiimote_state *s = &wdata->state;
1306
1307         /*
1308          * Balance board data layout:
1309          *
1310          *   Byte |  8  7  6  5  4  3  2  1  |
1311          *   -----+--------------------------+
1312          *    1   |    Top Right <15:8>      |
1313          *    2   |    Top Right  <7:0>      |
1314          *   -----+--------------------------+
1315          *    3   | Bottom Right <15:8>      |
1316          *    4   | Bottom Right  <7:0>      |
1317          *   -----+--------------------------+
1318          *    5   |     Top Left <15:8>      |
1319          *    6   |     Top Left  <7:0>      |
1320          *   -----+--------------------------+
1321          *    7   |  Bottom Left <15:8>      |
1322          *    8   |  Bottom Left  <7:0>      |
1323          *   -----+--------------------------+
1324          *
1325          * These values represent the weight-measurements of the Wii-balance
1326          * board with 16bit precision.
1327          *
1328          * The balance-board is never reported interleaved with motionp.
1329          */
1330
1331         val[0] = ext[0];
1332         val[0] <<= 8;
1333         val[0] |= ext[1];
1334
1335         val[1] = ext[2];
1336         val[1] <<= 8;
1337         val[1] |= ext[3];
1338
1339         val[2] = ext[4];
1340         val[2] <<= 8;
1341         val[2] |= ext[5];
1342
1343         val[3] = ext[6];
1344         val[3] <<= 8;
1345         val[3] |= ext[7];
1346
1347         /* apply calibration data */
1348         for (i = 0; i < 4; i++) {
1349                 if (val[i] <= s->calib_bboard[i][0]) {
1350                         tmp = 0;
1351                 } else if (val[i] < s->calib_bboard[i][1]) {
1352                         tmp = val[i] - s->calib_bboard[i][0];
1353                         tmp *= 1700;
1354                         div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1355                         tmp /= div ? div : 1;
1356                 } else {
1357                         tmp = val[i] - s->calib_bboard[i][1];
1358                         tmp *= 1700;
1359                         div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1360                         tmp /= div ? div : 1;
1361                         tmp += 1700;
1362                 }
1363                 val[i] = tmp;
1364         }
1365
1366         input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1367         input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1368         input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1369         input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1370         input_sync(wdata->extension.input);
1371 }
1372
1373 static int wiimod_bboard_open(struct input_dev *dev)
1374 {
1375         struct wiimote_data *wdata = input_get_drvdata(dev);
1376         unsigned long flags;
1377
1378         spin_lock_irqsave(&wdata->state.lock, flags);
1379         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1380         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1381         spin_unlock_irqrestore(&wdata->state.lock, flags);
1382
1383         return 0;
1384 }
1385
1386 static void wiimod_bboard_close(struct input_dev *dev)
1387 {
1388         struct wiimote_data *wdata = input_get_drvdata(dev);
1389         unsigned long flags;
1390
1391         spin_lock_irqsave(&wdata->state.lock, flags);
1392         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1393         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1394         spin_unlock_irqrestore(&wdata->state.lock, flags);
1395 }
1396
1397 static ssize_t wiimod_bboard_calib_show(struct device *dev,
1398                                         struct device_attribute *attr,
1399                                         char *out)
1400 {
1401         struct wiimote_data *wdata = dev_to_wii(dev);
1402         int i, j, ret;
1403         __u16 val;
1404         __u8 buf[24], offs;
1405
1406         ret = wiimote_cmd_acquire(wdata);
1407         if (ret)
1408                 return ret;
1409
1410         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1411         if (ret != 12) {
1412                 wiimote_cmd_release(wdata);
1413                 return ret < 0 ? ret : -EIO;
1414         }
1415         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1416         if (ret != 12) {
1417                 wiimote_cmd_release(wdata);
1418                 return ret < 0 ? ret : -EIO;
1419         }
1420
1421         wiimote_cmd_release(wdata);
1422
1423         spin_lock_irq(&wdata->state.lock);
1424         offs = 0;
1425         for (i = 0; i < 3; ++i) {
1426                 for (j = 0; j < 4; ++j) {
1427                         wdata->state.calib_bboard[j][i] = buf[offs];
1428                         wdata->state.calib_bboard[j][i] <<= 8;
1429                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1430                         offs += 2;
1431                 }
1432         }
1433         spin_unlock_irq(&wdata->state.lock);
1434
1435         ret = 0;
1436         for (i = 0; i < 3; ++i) {
1437                 for (j = 0; j < 4; ++j) {
1438                         val = wdata->state.calib_bboard[j][i];
1439                         if (i == 2 && j == 3)
1440                                 ret += sprintf(&out[ret], "%04x\n", val);
1441                         else
1442                                 ret += sprintf(&out[ret], "%04x:", val);
1443                 }
1444         }
1445
1446         return ret;
1447 }
1448
1449 static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1450
1451 static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1452                                struct wiimote_data *wdata)
1453 {
1454         int ret, i, j;
1455         __u8 buf[24], offs;
1456
1457         wiimote_cmd_acquire_noint(wdata);
1458
1459         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1460         if (ret != 12) {
1461                 wiimote_cmd_release(wdata);
1462                 return ret < 0 ? ret : -EIO;
1463         }
1464         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1465         if (ret != 12) {
1466                 wiimote_cmd_release(wdata);
1467                 return ret < 0 ? ret : -EIO;
1468         }
1469
1470         wiimote_cmd_release(wdata);
1471
1472         offs = 0;
1473         for (i = 0; i < 3; ++i) {
1474                 for (j = 0; j < 4; ++j) {
1475                         wdata->state.calib_bboard[j][i] = buf[offs];
1476                         wdata->state.calib_bboard[j][i] <<= 8;
1477                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1478                         offs += 2;
1479                 }
1480         }
1481
1482         wdata->extension.input = input_allocate_device();
1483         if (!wdata->extension.input)
1484                 return -ENOMEM;
1485
1486         ret = device_create_file(&wdata->hdev->dev,
1487                                  &dev_attr_bboard_calib);
1488         if (ret) {
1489                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1490                 goto err_free;
1491         }
1492
1493         input_set_drvdata(wdata->extension.input, wdata);
1494         wdata->extension.input->open = wiimod_bboard_open;
1495         wdata->extension.input->close = wiimod_bboard_close;
1496         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1497         wdata->extension.input->id.bustype = wdata->hdev->bus;
1498         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1499         wdata->extension.input->id.product = wdata->hdev->product;
1500         wdata->extension.input->id.version = wdata->hdev->version;
1501         wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1502
1503         set_bit(EV_KEY, wdata->extension.input->evbit);
1504         set_bit(BTN_A, wdata->extension.input->keybit);
1505
1506         set_bit(EV_ABS, wdata->extension.input->evbit);
1507         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1508         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1509         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1510         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1511         input_set_abs_params(wdata->extension.input,
1512                              ABS_HAT0X, 0, 65535, 2, 4);
1513         input_set_abs_params(wdata->extension.input,
1514                              ABS_HAT0Y, 0, 65535, 2, 4);
1515         input_set_abs_params(wdata->extension.input,
1516                              ABS_HAT1X, 0, 65535, 2, 4);
1517         input_set_abs_params(wdata->extension.input,
1518                              ABS_HAT1Y, 0, 65535, 2, 4);
1519
1520         ret = input_register_device(wdata->extension.input);
1521         if (ret)
1522                 goto err_file;
1523
1524         return 0;
1525
1526 err_file:
1527         device_remove_file(&wdata->hdev->dev,
1528                            &dev_attr_bboard_calib);
1529 err_free:
1530         input_free_device(wdata->extension.input);
1531         wdata->extension.input = NULL;
1532         return ret;
1533 }
1534
1535 static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1536                                  struct wiimote_data *wdata)
1537 {
1538         if (!wdata->extension.input)
1539                 return;
1540
1541         input_unregister_device(wdata->extension.input);
1542         wdata->extension.input = NULL;
1543         device_remove_file(&wdata->hdev->dev,
1544                            &dev_attr_bboard_calib);
1545 }
1546
1547 static const struct wiimod_ops wiimod_bboard = {
1548         .flags = WIIMOD_FLAG_EXT8,
1549         .arg = 0,
1550         .probe = wiimod_bboard_probe,
1551         .remove = wiimod_bboard_remove,
1552         .in_keys = wiimod_bboard_in_keys,
1553         .in_ext = wiimod_bboard_in_ext,
1554 };
1555
1556 /*
1557  * Pro Controller
1558  * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1559  * work together with the classic Wii, but only with the new Wii U. However, it
1560  * uses the same protocol and provides a builtin "classic controller pro"
1561  * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1562  * We provide all these via a standard extension device as the device doesn't
1563  * feature an extension port.
1564  */
1565
1566 enum wiimod_pro_keys {
1567         WIIMOD_PRO_KEY_A,
1568         WIIMOD_PRO_KEY_B,
1569         WIIMOD_PRO_KEY_X,
1570         WIIMOD_PRO_KEY_Y,
1571         WIIMOD_PRO_KEY_PLUS,
1572         WIIMOD_PRO_KEY_MINUS,
1573         WIIMOD_PRO_KEY_HOME,
1574         WIIMOD_PRO_KEY_LEFT,
1575         WIIMOD_PRO_KEY_RIGHT,
1576         WIIMOD_PRO_KEY_UP,
1577         WIIMOD_PRO_KEY_DOWN,
1578         WIIMOD_PRO_KEY_TL,
1579         WIIMOD_PRO_KEY_TR,
1580         WIIMOD_PRO_KEY_ZL,
1581         WIIMOD_PRO_KEY_ZR,
1582         WIIMOD_PRO_KEY_THUMBL,
1583         WIIMOD_PRO_KEY_THUMBR,
1584         WIIMOD_PRO_KEY_NUM,
1585 };
1586
1587 static const __u16 wiimod_pro_map[] = {
1588         BTN_EAST,       /* WIIMOD_PRO_KEY_A */
1589         BTN_SOUTH,      /* WIIMOD_PRO_KEY_B */
1590         BTN_NORTH,      /* WIIMOD_PRO_KEY_X */
1591         BTN_WEST,       /* WIIMOD_PRO_KEY_Y */
1592         BTN_START,      /* WIIMOD_PRO_KEY_PLUS */
1593         BTN_SELECT,     /* WIIMOD_PRO_KEY_MINUS */
1594         BTN_MODE,       /* WIIMOD_PRO_KEY_HOME */
1595         BTN_DPAD_LEFT,  /* WIIMOD_PRO_KEY_LEFT */
1596         BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1597         BTN_DPAD_UP,    /* WIIMOD_PRO_KEY_UP */
1598         BTN_DPAD_DOWN,  /* WIIMOD_PRO_KEY_DOWN */
1599         BTN_TL,         /* WIIMOD_PRO_KEY_TL */
1600         BTN_TR,         /* WIIMOD_PRO_KEY_TR */
1601         BTN_TL2,        /* WIIMOD_PRO_KEY_ZL */
1602         BTN_TR2,        /* WIIMOD_PRO_KEY_ZR */
1603         BTN_THUMBL,     /* WIIMOD_PRO_KEY_THUMBL */
1604         BTN_THUMBR,     /* WIIMOD_PRO_KEY_THUMBR */
1605 };
1606
1607 static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1608 {
1609         __s16 rx, ry, lx, ly;
1610
1611         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1612          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1613          *    1   |                   LX <7:0>                    |
1614          *   -----+-----------------------+-----------------------+
1615          *    2   |  0     0     0     0  |       LX <11:8>       |
1616          *   -----+-----------------------+-----------------------+
1617          *    3   |                   RX <7:0>                    |
1618          *   -----+-----------------------+-----------------------+
1619          *    4   |  0     0     0     0  |       RX <11:8>       |
1620          *   -----+-----------------------+-----------------------+
1621          *    5   |                   LY <7:0>                    |
1622          *   -----+-----------------------+-----------------------+
1623          *    6   |  0     0     0     0  |       LY <11:8>       |
1624          *   -----+-----------------------+-----------------------+
1625          *    7   |                   RY <7:0>                    |
1626          *   -----+-----------------------+-----------------------+
1627          *    8   |  0     0     0     0  |       RY <11:8>       |
1628          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1629          *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1630          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1631          *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1632          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1633          *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
1634          *   -----+-----+-----------------+-----------+-----+-----+
1635          * All buttons are low-active (0 if pressed)
1636          * RX and RY are right analog stick
1637          * LX and LY are left analog stick
1638          * BLT is left trigger, BRT is right trigger.
1639          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1640          * BZL is left Z button and BZR is right Z button
1641          * B-, BH, B+ are +, HOME and - buttons
1642          * BB, BY, BA, BX are A, B, X, Y buttons
1643          *
1644          * Bits marked as 0/1 are unknown and never changed during tests.
1645          *
1646          * Not entirely verified:
1647          *   CHARG: 1 if uncharging, 0 if charging
1648          *   USB: 1 if not connected, 0 if connected
1649          *   BATTERY: battery capacity from 000 (empty) to 100 (full)
1650          */
1651
1652         lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1653         rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1654         ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1655         ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1656
1657         /* zero-point offsets */
1658         lx -= 0x800;
1659         ly = 0x800 - ly;
1660         rx -= 0x800;
1661         ry = 0x800 - ry;
1662
1663         /* Trivial automatic calibration. We don't know any calibration data
1664          * in the EEPROM so we must use the first report to calibrate the
1665          * null-position of the analog sticks. Users can retrigger calibration
1666          * via sysfs, or set it explicitly. If data is off more than abs(500),
1667          * we skip calibration as the sticks are likely to be moved already. */
1668         if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1669                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1670                 if (abs(lx) < 500)
1671                         wdata->state.calib_pro_sticks[0] = -lx;
1672                 if (abs(ly) < 500)
1673                         wdata->state.calib_pro_sticks[1] = -ly;
1674                 if (abs(rx) < 500)
1675                         wdata->state.calib_pro_sticks[2] = -rx;
1676                 if (abs(ry) < 500)
1677                         wdata->state.calib_pro_sticks[3] = -ry;
1678         }
1679
1680         /* apply calibration data */
1681         lx += wdata->state.calib_pro_sticks[0];
1682         ly += wdata->state.calib_pro_sticks[1];
1683         rx += wdata->state.calib_pro_sticks[2];
1684         ry += wdata->state.calib_pro_sticks[3];
1685
1686         input_report_abs(wdata->extension.input, ABS_X, lx);
1687         input_report_abs(wdata->extension.input, ABS_Y, ly);
1688         input_report_abs(wdata->extension.input, ABS_RX, rx);
1689         input_report_abs(wdata->extension.input, ABS_RY, ry);
1690
1691         input_report_key(wdata->extension.input,
1692                          wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1693                          !(ext[8] & 0x80));
1694         input_report_key(wdata->extension.input,
1695                          wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1696                          !(ext[8] & 0x40));
1697         input_report_key(wdata->extension.input,
1698                          wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1699                          !(ext[8] & 0x20));
1700         input_report_key(wdata->extension.input,
1701                          wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1702                          !(ext[8] & 0x10));
1703         input_report_key(wdata->extension.input,
1704                          wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1705                          !(ext[8] & 0x08));
1706         input_report_key(wdata->extension.input,
1707                          wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1708                          !(ext[8] & 0x04));
1709         input_report_key(wdata->extension.input,
1710                          wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1711                          !(ext[8] & 0x02));
1712
1713         input_report_key(wdata->extension.input,
1714                          wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1715                          !(ext[9] & 0x80));
1716         input_report_key(wdata->extension.input,
1717                          wiimod_pro_map[WIIMOD_PRO_KEY_B],
1718                          !(ext[9] & 0x40));
1719         input_report_key(wdata->extension.input,
1720                          wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1721                          !(ext[9] & 0x20));
1722         input_report_key(wdata->extension.input,
1723                          wiimod_pro_map[WIIMOD_PRO_KEY_A],
1724                          !(ext[9] & 0x10));
1725         input_report_key(wdata->extension.input,
1726                          wiimod_pro_map[WIIMOD_PRO_KEY_X],
1727                          !(ext[9] & 0x08));
1728         input_report_key(wdata->extension.input,
1729                          wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1730                          !(ext[9] & 0x04));
1731         input_report_key(wdata->extension.input,
1732                          wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1733                          !(ext[9] & 0x02));
1734         input_report_key(wdata->extension.input,
1735                          wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1736                          !(ext[9] & 0x01));
1737
1738         input_report_key(wdata->extension.input,
1739                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1740                          !(ext[10] & 0x02));
1741         input_report_key(wdata->extension.input,
1742                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1743                          !(ext[10] & 0x01));
1744
1745         input_sync(wdata->extension.input);
1746 }
1747
1748 static int wiimod_pro_open(struct input_dev *dev)
1749 {
1750         struct wiimote_data *wdata = input_get_drvdata(dev);
1751         unsigned long flags;
1752
1753         spin_lock_irqsave(&wdata->state.lock, flags);
1754         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1755         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1756         spin_unlock_irqrestore(&wdata->state.lock, flags);
1757
1758         return 0;
1759 }
1760
1761 static void wiimod_pro_close(struct input_dev *dev)
1762 {
1763         struct wiimote_data *wdata = input_get_drvdata(dev);
1764         unsigned long flags;
1765
1766         spin_lock_irqsave(&wdata->state.lock, flags);
1767         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1768         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1769         spin_unlock_irqrestore(&wdata->state.lock, flags);
1770 }
1771
1772 static int wiimod_pro_play(struct input_dev *dev, void *data,
1773                            struct ff_effect *eff)
1774 {
1775         struct wiimote_data *wdata = input_get_drvdata(dev);
1776         __u8 value;
1777
1778         /*
1779          * The wiimote supports only a single rumble motor so if any magnitude
1780          * is set to non-zero then we start the rumble motor. If both are set to
1781          * zero, we stop the rumble motor.
1782          */
1783
1784         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1785                 value = 1;
1786         else
1787                 value = 0;
1788
1789         /* Locking state.lock here might deadlock with input_event() calls.
1790          * schedule_work acts as barrier. Merging multiple changes is fine. */
1791         wdata->state.cache_rumble = value;
1792         schedule_work(&wdata->rumble_worker);
1793
1794         return 0;
1795 }
1796
1797 static ssize_t wiimod_pro_calib_show(struct device *dev,
1798                                      struct device_attribute *attr,
1799                                      char *out)
1800 {
1801         struct wiimote_data *wdata = dev_to_wii(dev);
1802         int r;
1803
1804         r = 0;
1805         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
1806         r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
1807         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
1808         r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1809
1810         return r;
1811 }
1812
1813 static ssize_t wiimod_pro_calib_store(struct device *dev,
1814                                       struct device_attribute *attr,
1815                                       const char *buf, size_t count)
1816 {
1817         struct wiimote_data *wdata = dev_to_wii(dev);
1818         int r;
1819         s16 x1, y1, x2, y2;
1820
1821         if (!strncmp(buf, "scan\n", 5)) {
1822                 spin_lock_irq(&wdata->state.lock);
1823                 wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1824                 spin_unlock_irq(&wdata->state.lock);
1825         } else {
1826                 r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1827                 if (r != 4)
1828                         return -EINVAL;
1829
1830                 spin_lock_irq(&wdata->state.lock);
1831                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1832                 spin_unlock_irq(&wdata->state.lock);
1833
1834                 wdata->state.calib_pro_sticks[0] = x1;
1835                 wdata->state.calib_pro_sticks[1] = y1;
1836                 wdata->state.calib_pro_sticks[2] = x2;
1837                 wdata->state.calib_pro_sticks[3] = y2;
1838         }
1839
1840         return strnlen(buf, PAGE_SIZE);
1841 }
1842
1843 static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1844                    wiimod_pro_calib_store);
1845
1846 static int wiimod_pro_probe(const struct wiimod_ops *ops,
1847                             struct wiimote_data *wdata)
1848 {
1849         int ret, i;
1850         unsigned long flags;
1851
1852         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1853         wdata->state.calib_pro_sticks[0] = 0;
1854         wdata->state.calib_pro_sticks[1] = 0;
1855         wdata->state.calib_pro_sticks[2] = 0;
1856         wdata->state.calib_pro_sticks[3] = 0;
1857
1858         spin_lock_irqsave(&wdata->state.lock, flags);
1859         wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1860         spin_unlock_irqrestore(&wdata->state.lock, flags);
1861
1862         wdata->extension.input = input_allocate_device();
1863         if (!wdata->extension.input)
1864                 return -ENOMEM;
1865
1866         set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
1867         input_set_drvdata(wdata->extension.input, wdata);
1868
1869         if (input_ff_create_memless(wdata->extension.input, NULL,
1870                                     wiimod_pro_play)) {
1871                 ret = -ENOMEM;
1872                 goto err_free;
1873         }
1874
1875         ret = device_create_file(&wdata->hdev->dev,
1876                                  &dev_attr_pro_calib);
1877         if (ret) {
1878                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1879                 goto err_free;
1880         }
1881
1882         wdata->extension.input->open = wiimod_pro_open;
1883         wdata->extension.input->close = wiimod_pro_close;
1884         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1885         wdata->extension.input->id.bustype = wdata->hdev->bus;
1886         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1887         wdata->extension.input->id.product = wdata->hdev->product;
1888         wdata->extension.input->id.version = wdata->hdev->version;
1889         wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1890
1891         set_bit(EV_KEY, wdata->extension.input->evbit);
1892         for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1893                 set_bit(wiimod_pro_map[i],
1894                         wdata->extension.input->keybit);
1895
1896         set_bit(EV_ABS, wdata->extension.input->evbit);
1897         set_bit(ABS_X, wdata->extension.input->absbit);
1898         set_bit(ABS_Y, wdata->extension.input->absbit);
1899         set_bit(ABS_RX, wdata->extension.input->absbit);
1900         set_bit(ABS_RY, wdata->extension.input->absbit);
1901         input_set_abs_params(wdata->extension.input,
1902                              ABS_X, -0x400, 0x400, 4, 100);
1903         input_set_abs_params(wdata->extension.input,
1904                              ABS_Y, -0x400, 0x400, 4, 100);
1905         input_set_abs_params(wdata->extension.input,
1906                              ABS_RX, -0x400, 0x400, 4, 100);
1907         input_set_abs_params(wdata->extension.input,
1908                              ABS_RY, -0x400, 0x400, 4, 100);
1909
1910         ret = input_register_device(wdata->extension.input);
1911         if (ret)
1912                 goto err_file;
1913
1914         return 0;
1915
1916 err_file:
1917         device_remove_file(&wdata->hdev->dev,
1918                            &dev_attr_pro_calib);
1919 err_free:
1920         input_free_device(wdata->extension.input);
1921         wdata->extension.input = NULL;
1922         return ret;
1923 }
1924
1925 static void wiimod_pro_remove(const struct wiimod_ops *ops,
1926                               struct wiimote_data *wdata)
1927 {
1928         unsigned long flags;
1929
1930         if (!wdata->extension.input)
1931                 return;
1932
1933         input_unregister_device(wdata->extension.input);
1934         wdata->extension.input = NULL;
1935         cancel_work_sync(&wdata->rumble_worker);
1936         device_remove_file(&wdata->hdev->dev,
1937                            &dev_attr_pro_calib);
1938
1939         spin_lock_irqsave(&wdata->state.lock, flags);
1940         wiiproto_req_rumble(wdata, 0);
1941         spin_unlock_irqrestore(&wdata->state.lock, flags);
1942 }
1943
1944 static const struct wiimod_ops wiimod_pro = {
1945         .flags = WIIMOD_FLAG_EXT16,
1946         .arg = 0,
1947         .probe = wiimod_pro_probe,
1948         .remove = wiimod_pro_remove,
1949         .in_ext = wiimod_pro_in_ext,
1950 };
1951
1952 /*
1953  * Builtin Motion Plus
1954  * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
1955  * disables polling for Motion-Plus. This should be set only for devices which
1956  * don't allow MP hotplugging.
1957  */
1958
1959 static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
1960                                    struct wiimote_data *wdata)
1961 {
1962         unsigned long flags;
1963
1964         spin_lock_irqsave(&wdata->state.lock, flags);
1965         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1966         spin_unlock_irqrestore(&wdata->state.lock, flags);
1967
1968         return 0;
1969 }
1970
1971 static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
1972                                      struct wiimote_data *wdata)
1973 {
1974         unsigned long flags;
1975
1976         spin_lock_irqsave(&wdata->state.lock, flags);
1977         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1978         spin_unlock_irqrestore(&wdata->state.lock, flags);
1979 }
1980
1981 static const struct wiimod_ops wiimod_builtin_mp = {
1982         .flags = 0,
1983         .arg = 0,
1984         .probe = wiimod_builtin_mp_probe,
1985         .remove = wiimod_builtin_mp_remove,
1986 };
1987
1988 /*
1989  * No Motion Plus
1990  * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
1991  * disables motion-plus. This is needed for devices that advertise this but we
1992  * don't know how to use it (or whether it is actually present).
1993  */
1994
1995 static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
1996                               struct wiimote_data *wdata)
1997 {
1998         unsigned long flags;
1999
2000         spin_lock_irqsave(&wdata->state.lock, flags);
2001         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2002         spin_unlock_irqrestore(&wdata->state.lock, flags);
2003
2004         return 0;
2005 }
2006
2007 static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2008                                 struct wiimote_data *wdata)
2009 {
2010         unsigned long flags;
2011
2012         spin_lock_irqsave(&wdata->state.lock, flags);
2013         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2014         spin_unlock_irqrestore(&wdata->state.lock, flags);
2015 }
2016
2017 static const struct wiimod_ops wiimod_no_mp = {
2018         .flags = 0,
2019         .arg = 0,
2020         .probe = wiimod_no_mp_probe,
2021         .remove = wiimod_no_mp_remove,
2022 };
2023
2024 /*
2025  * Motion Plus
2026  * The Motion Plus extension provides rotation sensors (gyro) as a small
2027  * extension device for Wii Remotes. Many devices have them built-in so
2028  * you cannot see them from the outside.
2029  * Motion Plus extensions are special because they are on a separate extension
2030  * port and allow other extensions to be used simultaneously. This is all
2031  * handled by the Wiimote Core so we don't have to deal with it.
2032  */
2033
2034 static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2035 {
2036         __s32 x, y, z;
2037
2038         /*        |   8    7    6    5    4    3 |  2  |  1  |
2039          *   -----+------------------------------+-----+-----+
2040          *    1   |               Yaw Speed <7:0>            |
2041          *    2   |              Roll Speed <7:0>            |
2042          *    3   |             Pitch Speed <7:0>            |
2043          *   -----+------------------------------+-----+-----+
2044          *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
2045          *   -----+------------------------------+-----+-----+
2046          *    5   |      Roll Speed <13:8>       |Roll | Ext |
2047          *   -----+------------------------------+-----+-----+
2048          *    6   |     Pitch Speed <13:8>       |  1  |  0  |
2049          *   -----+------------------------------+-----+-----+
2050          * The single bits Yaw, Roll, Pitch in the lower right corner specify
2051          * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2052          * roation is 8192/440 units / deg/s and for fast rotation 8192/2000
2053          * units / deg/s. To get a linear scale for fast rotation we multiply
2054          * by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
2055          * previous scale reported by this driver.
2056          * This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2057          * If the wiimote is not rotating the sensor reports 2^13 = 8192.
2058          * Ext specifies whether an extension is connected to the motionp.
2059          * which is parsed by wiimote-core.
2060          */
2061
2062         x = ext[0];
2063         y = ext[1];
2064         z = ext[2];
2065
2066         x |= (((__u16)ext[3]) << 6) & 0xff00;
2067         y |= (((__u16)ext[4]) << 6) & 0xff00;
2068         z |= (((__u16)ext[5]) << 6) & 0xff00;
2069
2070         x -= 8192;
2071         y -= 8192;
2072         z -= 8192;
2073
2074         if (!(ext[3] & 0x02))
2075                 x = (x * 2000 * 9) / 440;
2076         else
2077                 x *= 9;
2078         if (!(ext[4] & 0x02))
2079                 y = (y * 2000 * 9) / 440;
2080         else
2081                 y *= 9;
2082         if (!(ext[3] & 0x01))
2083                 z = (z * 2000 * 9) / 440;
2084         else
2085                 z *= 9;
2086
2087         input_report_abs(wdata->mp, ABS_RX, x);
2088         input_report_abs(wdata->mp, ABS_RY, y);
2089         input_report_abs(wdata->mp, ABS_RZ, z);
2090         input_sync(wdata->mp);
2091 }
2092
2093 static int wiimod_mp_open(struct input_dev *dev)
2094 {
2095         struct wiimote_data *wdata = input_get_drvdata(dev);
2096         unsigned long flags;
2097
2098         spin_lock_irqsave(&wdata->state.lock, flags);
2099         wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2100         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2101         __wiimote_schedule(wdata);
2102         spin_unlock_irqrestore(&wdata->state.lock, flags);
2103
2104         return 0;
2105 }
2106
2107 static void wiimod_mp_close(struct input_dev *dev)
2108 {
2109         struct wiimote_data *wdata = input_get_drvdata(dev);
2110         unsigned long flags;
2111
2112         spin_lock_irqsave(&wdata->state.lock, flags);
2113         wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2114         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2115         __wiimote_schedule(wdata);
2116         spin_unlock_irqrestore(&wdata->state.lock, flags);
2117 }
2118
2119 static int wiimod_mp_probe(const struct wiimod_ops *ops,
2120                            struct wiimote_data *wdata)
2121 {
2122         int ret;
2123
2124         wdata->mp = input_allocate_device();
2125         if (!wdata->mp)
2126                 return -ENOMEM;
2127
2128         input_set_drvdata(wdata->mp, wdata);
2129         wdata->mp->open = wiimod_mp_open;
2130         wdata->mp->close = wiimod_mp_close;
2131         wdata->mp->dev.parent = &wdata->hdev->dev;
2132         wdata->mp->id.bustype = wdata->hdev->bus;
2133         wdata->mp->id.vendor = wdata->hdev->vendor;
2134         wdata->mp->id.product = wdata->hdev->product;
2135         wdata->mp->id.version = wdata->hdev->version;
2136         wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2137
2138         set_bit(EV_ABS, wdata->mp->evbit);
2139         set_bit(ABS_RX, wdata->mp->absbit);
2140         set_bit(ABS_RY, wdata->mp->absbit);
2141         set_bit(ABS_RZ, wdata->mp->absbit);
2142         input_set_abs_params(wdata->mp,
2143                              ABS_RX, -16000, 16000, 4, 8);
2144         input_set_abs_params(wdata->mp,
2145                              ABS_RY, -16000, 16000, 4, 8);
2146         input_set_abs_params(wdata->mp,
2147                              ABS_RZ, -16000, 16000, 4, 8);
2148
2149         ret = input_register_device(wdata->mp);
2150         if (ret)
2151                 goto err_free;
2152
2153         return 0;
2154
2155 err_free:
2156         input_free_device(wdata->mp);
2157         wdata->mp = NULL;
2158         return ret;
2159 }
2160
2161 static void wiimod_mp_remove(const struct wiimod_ops *ops,
2162                              struct wiimote_data *wdata)
2163 {
2164         if (!wdata->mp)
2165                 return;
2166
2167         input_unregister_device(wdata->mp);
2168         wdata->mp = NULL;
2169 }
2170
2171 const struct wiimod_ops wiimod_mp = {
2172         .flags = 0,
2173         .arg = 0,
2174         .probe = wiimod_mp_probe,
2175         .remove = wiimod_mp_remove,
2176         .in_mp = wiimod_mp_in_mp,
2177 };
2178
2179 /* module table */
2180
2181 static const struct wiimod_ops wiimod_dummy;
2182
2183 const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2184         [WIIMOD_KEYS] = &wiimod_keys,
2185         [WIIMOD_RUMBLE] = &wiimod_rumble,
2186         [WIIMOD_BATTERY] = &wiimod_battery,
2187         [WIIMOD_LED1] = &wiimod_leds[0],
2188         [WIIMOD_LED2] = &wiimod_leds[1],
2189         [WIIMOD_LED3] = &wiimod_leds[2],
2190         [WIIMOD_LED4] = &wiimod_leds[3],
2191         [WIIMOD_ACCEL] = &wiimod_accel,
2192         [WIIMOD_IR] = &wiimod_ir,
2193         [WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2194         [WIIMOD_NO_MP] = &wiimod_no_mp,
2195 };
2196
2197 const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2198         [WIIMOTE_EXT_NONE] = &wiimod_dummy,
2199         [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2200         [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2201         [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2202         [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2203         [WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2204 };