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 = container_of(psy, struct wiimote_data,
 207                                                   battery);
 208         int ret = 0, state;
 209         unsigned long flags;
 210
 211         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 212                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 213                 return 0;
 214         } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 215                 return -EINVAL;
 216         }
 217
 218         ret = wiimote_cmd_acquire(wdata);
 219         if (ret)
 220                 return ret;
 221
 222         spin_lock_irqsave(&wdata->state.lock, flags);
 223         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 224         wiiproto_req_status(wdata);
 225         spin_unlock_irqrestore(&wdata->state.lock, flags);
 226
 227         wiimote_cmd_wait(wdata);
 228         wiimote_cmd_release(wdata);
 229
 230         spin_lock_irqsave(&wdata->state.lock, flags);
 231         state = wdata->state.cmd_battery;
 232         spin_unlock_irqrestore(&wdata->state.lock, flags);
 233
 234         val->intval = state * 100 / 255;
 235         return ret;
 236 }
 237
 238 static int wiimod_battery_probe(const struct wiimod_ops *ops,
 239                                 struct wiimote_data *wdata)
 240 {
 241         int ret;
 242
 243         wdata->battery.properties = wiimod_battery_props;
 244         wdata->battery.num_properties = ARRAY_SIZE(wiimod_battery_props);
 245         wdata->battery.get_property = wiimod_battery_get_property;
 246         wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
 247         wdata->battery.use_for_apm = 0;
 248         wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 249                                         wdata->hdev->uniq);
 250         if (!wdata->battery.name)
 251                 return -ENOMEM;
 252
 253         ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
 254         if (ret) {
 255                 hid_err(wdata->hdev, "cannot register battery device\n");
 256                 goto err_free;
 257         }
 258
 259         power_supply_powers(&wdata->battery, &wdata->hdev->dev);
 260         return 0;
 261
 262 err_free:
 263         kfree(wdata->battery.name);
 264         wdata->battery.name = NULL;
 265         return ret;
 266 }
 267
 268 static void wiimod_battery_remove(const struct wiimod_ops *ops,
 269                                   struct wiimote_data *wdata)
 270 {
 271         if (!wdata->battery.name)
 272                 return;
 273
 274         power_supply_unregister(&wdata->battery);
 275         kfree(wdata->battery.name);
 276         wdata->battery.name = NULL;
 277 }
 278
 279 static const struct wiimod_ops wiimod_battery = {
 280         .flags = 0,
 281         .arg = 0,
 282         .probe = wiimod_battery_probe,
 283         .remove = wiimod_battery_remove,
 284 };
 285
 286 /*
 287  * LED
 288  * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 289  * wiimod_ops structure specifies which LED this module controls. This allows
 290  * to register a limited number of LEDs.
 291  * State is managed by wiimote core.
 292  */
 293
 294 static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
 295 {
 296         struct wiimote_data *wdata;
 297         struct device *dev = led_dev->dev->parent;
 298         int i;
 299         unsigned long flags;
 300         bool value = false;
 301
 302         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 303
 304         for (i = 0; i < 4; ++i) {
 305                 if (wdata->leds[i] == led_dev) {
 306                         spin_lock_irqsave(&wdata->state.lock, flags);
 307                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 308                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 309                         break;
 310                 }
 311         }
 312
 313         return value ? LED_FULL : LED_OFF;
 314 }
 315
 316 static void wiimod_led_set(struct led_classdev *led_dev,
 317                            enum led_brightness value)
 318 {
 319         struct wiimote_data *wdata;
 320         struct device *dev = led_dev->dev->parent;
 321         int i;
 322         unsigned long flags;
 323         __u8 state, flag;
 324
 325         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 326
 327         for (i = 0; i < 4; ++i) {
 328                 if (wdata->leds[i] == led_dev) {
 329                         flag = WIIPROTO_FLAG_LED(i + 1);
 330                         spin_lock_irqsave(&wdata->state.lock, flags);
 331                         state = wdata->state.flags;
 332                         if (value == LED_OFF)
 333                                 wiiproto_req_leds(wdata, state & ~flag);
 334                         else
 335                                 wiiproto_req_leds(wdata, state | flag);
 336                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 337                         break;
 338                 }
 339         }
 340 }
 341
 342 static int wiimod_led_probe(const struct wiimod_ops *ops,
 343                             struct wiimote_data *wdata)
 344 {
 345         struct device *dev = &wdata->hdev->dev;
 346         size_t namesz = strlen(dev_name(dev)) + 9;
 347         struct led_classdev *led;
 348         unsigned long flags;
 349         char *name;
 350         int ret;
 351
 352         led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 353         if (!led)
 354                 return -ENOMEM;
 355
 356         name = (void*)&led[1];
 357         snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 358         led->name = name;
 359         led->brightness = 0;
 360         led->max_brightness = 1;
 361         led->brightness_get = wiimod_led_get;
 362         led->brightness_set = wiimod_led_set;
 363
 364         wdata->leds[ops->arg] = led;
 365         ret = led_classdev_register(dev, led);
 366         if (ret)
 367                 goto err_free;
 368
 369         /* enable LED1 to stop initial LED-blinking */
 370         if (ops->arg == 0) {
 371                 spin_lock_irqsave(&wdata->state.lock, flags);
 372                 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 373                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 374         }
 375
 376         return 0;
 377
 378 err_free:
 379         wdata->leds[ops->arg] = NULL;
 380         kfree(led);
 381         return ret;
 382 }
 383
 384 static void wiimod_led_remove(const struct wiimod_ops *ops,
 385                               struct wiimote_data *wdata)
 386 {
 387         if (!wdata->leds[ops->arg])
 388                 return;
 389
 390         led_classdev_unregister(wdata->leds[ops->arg]);
 391         kfree(wdata->leds[ops->arg]);
 392         wdata->leds[ops->arg] = NULL;
 393 }
 394
 395 static const struct wiimod_ops wiimod_leds[4] = {
 396         {
 397                 .flags = 0,
 398                 .arg = 0,
 399                 .probe = wiimod_led_probe,
 400                 .remove = wiimod_led_remove,
 401         },
 402         {
 403                 .flags = 0,
 404                 .arg = 1,
 405                 .probe = wiimod_led_probe,
 406                 .remove = wiimod_led_remove,
 407         },
 408         {
 409                 .flags = 0,
 410                 .arg = 2,
 411                 .probe = wiimod_led_probe,
 412                 .remove = wiimod_led_remove,
 413         },
 414         {
 415                 .flags = 0,
 416                 .arg = 3,
 417                 .probe = wiimod_led_probe,
 418                 .remove = wiimod_led_remove,
 419         },
 420 };
 421
 422 /*
 423  * Accelerometer
 424  * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 425  * device, it's mostly cleared to 0. This module parses this data and provides
 426  * it via a separate input device.
 427  */
 428
 429 static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 430                                   const __u8 *accel)
 431 {
 432         __u16 x, y, z;
 433
 434         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 435                 return;
 436
 437         /*
 438          * payload is: BB BB XX YY ZZ
 439          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 440          * contain the upper 8 bits of each value. The lower 2 bits are
 441          * contained in the buttons data BB BB.
 442          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 443          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 444          * accel value and bit 6 is the second bit of the Z value.
 445          * The first bit of Y and Z values is not available and always set to 0.
 446          * 0x200 is returned on no movement.
 447          */
 448
 449         x = accel[2] << 2;
 450         y = accel[3] << 2;
 451         z = accel[4] << 2;
 452
 453         x |= (accel[0] >> 5) & 0x3;
 454         y |= (accel[1] >> 4) & 0x2;
 455         z |= (accel[1] >> 5) & 0x2;
 456
 457         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 458         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 459         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 460         input_sync(wdata->accel);
 461 }
 462
 463 static int wiimod_accel_open(struct input_dev *dev)
 464 {
 465         struct wiimote_data *wdata = input_get_drvdata(dev);
 466         unsigned long flags;
 467
 468         spin_lock_irqsave(&wdata->state.lock, flags);
 469         wiiproto_req_accel(wdata, true);
 470         spin_unlock_irqrestore(&wdata->state.lock, flags);
 471
 472         return 0;
 473 }
 474
 475 static void wiimod_accel_close(struct input_dev *dev)
 476 {
 477         struct wiimote_data *wdata = input_get_drvdata(dev);
 478         unsigned long flags;
 479
 480         spin_lock_irqsave(&wdata->state.lock, flags);
 481         wiiproto_req_accel(wdata, false);
 482         spin_unlock_irqrestore(&wdata->state.lock, flags);
 483 }
 484
 485 static int wiimod_accel_probe(const struct wiimod_ops *ops,
 486                               struct wiimote_data *wdata)
 487 {
 488         int ret;
 489
 490         wdata->accel = input_allocate_device();
 491         if (!wdata->accel)
 492                 return -ENOMEM;
 493
 494         input_set_drvdata(wdata->accel, wdata);
 495         wdata->accel->open = wiimod_accel_open;
 496         wdata->accel->close = wiimod_accel_close;
 497         wdata->accel->dev.parent = &wdata->hdev->dev;
 498         wdata->accel->id.bustype = wdata->hdev->bus;
 499         wdata->accel->id.vendor = wdata->hdev->vendor;
 500         wdata->accel->id.product = wdata->hdev->product;
 501         wdata->accel->id.version = wdata->hdev->version;
 502         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 503
 504         set_bit(EV_ABS, wdata->accel->evbit);
 505         set_bit(ABS_RX, wdata->accel->absbit);
 506         set_bit(ABS_RY, wdata->accel->absbit);
 507         set_bit(ABS_RZ, wdata->accel->absbit);
 508         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 509         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 510         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 511
 512         ret = input_register_device(wdata->accel);
 513         if (ret) {
 514                 hid_err(wdata->hdev, "cannot register input device\n");
 515                 goto err_free;
 516         }
 517
 518         return 0;
 519
 520 err_free:
 521         input_free_device(wdata->accel);
 522         wdata->accel = NULL;
 523         return ret;
 524 }
 525
 526 static void wiimod_accel_remove(const struct wiimod_ops *ops,
 527                                 struct wiimote_data *wdata)
 528 {
 529         if (!wdata->accel)
 530                 return;
 531
 532         input_unregister_device(wdata->accel);
 533         wdata->accel = NULL;
 534 }
 535
 536 static const struct wiimod_ops wiimod_accel = {
 537         .flags = 0,
 538         .arg = 0,
 539         .probe = wiimod_accel_probe,
 540         .remove = wiimod_accel_remove,
 541         .in_accel = wiimod_accel_in_accel,
 542 };
 543
 544 /*
 545  * IR Cam
 546  * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 547  * to be initialized with a fairly complex procedure and consumes a lot of
 548  * power. Therefore, as long as no application uses the IR input device, it is
 549  * kept offline.
 550  * Nearly no other device than the normal Wii Remotes supports the IR cam so
 551  * you can disable this module for these devices.
 552  */
 553
 554 static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 555                             bool packed, unsigned int id)
 556 {
 557         __u16 x, y;
 558         __u8 xid, yid;
 559         bool sync = false;
 560
 561         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 562                 return;
 563
 564         switch (id) {
 565         case 0:
 566                 xid = ABS_HAT0X;
 567                 yid = ABS_HAT0Y;
 568                 break;
 569         case 1:
 570                 xid = ABS_HAT1X;
 571                 yid = ABS_HAT1Y;
 572                 break;
 573         case 2:
 574                 xid = ABS_HAT2X;
 575                 yid = ABS_HAT2Y;
 576                 break;
 577         case 3:
 578                 xid = ABS_HAT3X;
 579                 yid = ABS_HAT3Y;
 580                 sync = true;
 581                 break;
 582         default:
 583                 return;
 584         }
 585
 586         /*
 587          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 588          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 589          * of both.
 590          * If data is packed, then the 3rd byte is put first and slightly
 591          * reordered. This allows to interleave packed and non-packed data to
 592          * have two IR sets in 5 bytes instead of 6.
 593          * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 594          */
 595
 596         if (packed) {
 597                 x = ir[1] | ((ir[0] & 0x03) << 8);
 598                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 599         } else {
 600                 x = ir[0] | ((ir[2] & 0x30) << 4);
 601                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 602         }
 603
 604         input_report_abs(wdata->ir, xid, x);
 605         input_report_abs(wdata->ir, yid, y);
 606
 607         if (sync)
 608                 input_sync(wdata->ir);
 609 }
 610
 611 static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 612 {
 613         int ret;
 614         unsigned long flags;
 615         __u8 format = 0;
 616         static const __u8 data_enable[] = { 0x01 };
 617         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 618                                                 0x00, 0xaa, 0x00, 0x64 };
 619         static const __u8 data_sens2[] = { 0x63, 0x03 };
 620         static const __u8 data_fin[] = { 0x08 };
 621
 622         spin_lock_irqsave(&wdata->state.lock, flags);
 623
 624         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 625                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 626                 return 0;
 627         }
 628
 629         if (mode == 0) {
 630                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 631                 wiiproto_req_ir1(wdata, 0);
 632                 wiiproto_req_ir2(wdata, 0);
 633                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 634                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 635                 return 0;
 636         }
 637
 638         spin_unlock_irqrestore(&wdata->state.lock, flags);
 639
 640         ret = wiimote_cmd_acquire(wdata);
 641         if (ret)
 642                 return ret;
 643
 644         /* send PIXEL CLOCK ENABLE cmd first */
 645         spin_lock_irqsave(&wdata->state.lock, flags);
 646         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 647         wiiproto_req_ir1(wdata, 0x06);
 648         spin_unlock_irqrestore(&wdata->state.lock, flags);
 649
 650         ret = wiimote_cmd_wait(wdata);
 651         if (ret)
 652                 goto unlock;
 653         if (wdata->state.cmd_err) {
 654                 ret = -EIO;
 655                 goto unlock;
 656         }
 657
 658         /* enable IR LOGIC */
 659         spin_lock_irqsave(&wdata->state.lock, flags);
 660         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 661         wiiproto_req_ir2(wdata, 0x06);
 662         spin_unlock_irqrestore(&wdata->state.lock, flags);
 663
 664         ret = wiimote_cmd_wait(wdata);
 665         if (ret)
 666                 goto unlock;
 667         if (wdata->state.cmd_err) {
 668                 ret = -EIO;
 669                 goto unlock;
 670         }
 671
 672         /* enable IR cam but do not make it send data, yet */
 673         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 674                                                         sizeof(data_enable));
 675         if (ret)
 676                 goto unlock;
 677
 678         /* write first sensitivity block */
 679         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 680                                                         sizeof(data_sens1));
 681         if (ret)
 682                 goto unlock;
 683
 684         /* write second sensitivity block */
 685         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 686                                                         sizeof(data_sens2));
 687         if (ret)
 688                 goto unlock;
 689
 690         /* put IR cam into desired state */
 691         switch (mode) {
 692                 case WIIPROTO_FLAG_IR_FULL:
 693                         format = 5;
 694                         break;
 695                 case WIIPROTO_FLAG_IR_EXT:
 696                         format = 3;
 697                         break;
 698                 case WIIPROTO_FLAG_IR_BASIC:
 699                         format = 1;
 700                         break;
 701         }
 702         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 703         if (ret)
 704                 goto unlock;
 705
 706         /* make IR cam send data */
 707         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 708         if (ret)
 709                 goto unlock;
 710
 711         /* request new DRM mode compatible to IR mode */
 712         spin_lock_irqsave(&wdata->state.lock, flags);
 713         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 714         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 715         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 716         spin_unlock_irqrestore(&wdata->state.lock, flags);
 717
 718 unlock:
 719         wiimote_cmd_release(wdata);
 720         return ret;
 721 }
 722
 723 static int wiimod_ir_open(struct input_dev *dev)
 724 {
 725         struct wiimote_data *wdata = input_get_drvdata(dev);
 726
 727         return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 728 }
 729
 730 static void wiimod_ir_close(struct input_dev *dev)
 731 {
 732         struct wiimote_data *wdata = input_get_drvdata(dev);
 733
 734         wiimod_ir_change(wdata, 0);
 735 }
 736
 737 static int wiimod_ir_probe(const struct wiimod_ops *ops,
 738                            struct wiimote_data *wdata)
 739 {
 740         int ret;
 741
 742         wdata->ir = input_allocate_device();
 743         if (!wdata->ir)
 744                 return -ENOMEM;
 745
 746         input_set_drvdata(wdata->ir, wdata);
 747         wdata->ir->open = wiimod_ir_open;
 748         wdata->ir->close = wiimod_ir_close;
 749         wdata->ir->dev.parent = &wdata->hdev->dev;
 750         wdata->ir->id.bustype = wdata->hdev->bus;
 751         wdata->ir->id.vendor = wdata->hdev->vendor;
 752         wdata->ir->id.product = wdata->hdev->product;
 753         wdata->ir->id.version = wdata->hdev->version;
 754         wdata->ir->name = WIIMOTE_NAME " IR";
 755
 756         set_bit(EV_ABS, wdata->ir->evbit);
 757         set_bit(ABS_HAT0X, wdata->ir->absbit);
 758         set_bit(ABS_HAT0Y, wdata->ir->absbit);
 759         set_bit(ABS_HAT1X, wdata->ir->absbit);
 760         set_bit(ABS_HAT1Y, wdata->ir->absbit);
 761         set_bit(ABS_HAT2X, wdata->ir->absbit);
 762         set_bit(ABS_HAT2Y, wdata->ir->absbit);
 763         set_bit(ABS_HAT3X, wdata->ir->absbit);
 764         set_bit(ABS_HAT3Y, wdata->ir->absbit);
 765         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 766         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 767         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 768         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 769         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 770         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 771         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 772         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 773
 774         ret = input_register_device(wdata->ir);
 775         if (ret) {
 776                 hid_err(wdata->hdev, "cannot register input device\n");
 777                 goto err_free;
 778         }
 779
 780         return 0;
 781
 782 err_free:
 783         input_free_device(wdata->ir);
 784         wdata->ir = NULL;
 785         return ret;
 786 }
 787
 788 static void wiimod_ir_remove(const struct wiimod_ops *ops,
 789                              struct wiimote_data *wdata)
 790 {
 791         if (!wdata->ir)
 792                 return;
 793
 794         input_unregister_device(wdata->ir);
 795         wdata->ir = NULL;
 796 }
 797
 798 static const struct wiimod_ops wiimod_ir = {
 799         .flags = 0,
 800         .arg = 0,
 801         .probe = wiimod_ir_probe,
 802         .remove = wiimod_ir_remove,
 803         .in_ir = wiimod_ir_in_ir,
 804 };
 805
 806 /*
 807  * Nunchuk Extension
 808  * The Nintendo Wii Nunchuk was the first official extension published by
 809  * Nintendo. It provides two additional keys and a separate accelerometer. It
 810  * can be hotplugged to standard Wii Remotes.
 811  */
 812
 813 enum wiimod_nunchuk_keys {
 814         WIIMOD_NUNCHUK_KEY_C,
 815         WIIMOD_NUNCHUK_KEY_Z,
 816         WIIMOD_NUNCHUK_KEY_NUM,
 817 };
 818
 819 static const __u16 wiimod_nunchuk_map[] = {
 820         BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 821         BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 822 };
 823
 824 static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 825 {
 826         __s16 x, y, z, bx, by;
 827
 828         /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 829          *   -----+----------+---------+---------+----+-----+
 830          *    1   |              Button X <7:0>             |
 831          *    2   |              Button Y <7:0>             |
 832          *   -----+----------+---------+---------+----+-----+
 833          *    3   |               Speed X <9:2>             |
 834          *    4   |               Speed Y <9:2>             |
 835          *    5   |               Speed Z <9:2>             |
 836          *   -----+----------+---------+---------+----+-----+
 837          *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 838          *   -----+----------+---------+---------+----+-----+
 839          * Button X/Y is the analog stick. Speed X, Y and Z are the
 840          * accelerometer data in the same format as the wiimote's accelerometer.
 841          * The 6th byte contains the LSBs of the accelerometer data.
 842          * BC and BZ are the C and Z buttons: 0 means pressed
 843          *
 844          * If reported interleaved with motionp, then the layout changes. The
 845          * 5th and 6th byte changes to:
 846          *   -----+-----------------------------------+-----+
 847          *    5   |            Speed Z <9:3>          | EXT |
 848          *   -----+--------+-----+-----+----+----+----+-----+
 849          *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 850          *   -----+--------+-----+-----+----+----+----+-----+
 851          * All three accelerometer values lose their LSB. The other data is
 852          * still available but slightly moved.
 853          *
 854          * Center data for button values is 128. Center value for accelerometer
 855          * values it 512 / 0x200
 856          */
 857
 858         bx = ext[0];
 859         by = ext[1];
 860         bx -= 128;
 861         by -= 128;
 862
 863         x = ext[2] << 2;
 864         y = ext[3] << 2;
 865         z = ext[4] << 2;
 866
 867         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 868                 x |= (ext[5] >> 3) & 0x02;
 869                 y |= (ext[5] >> 4) & 0x02;
 870                 z &= ~0x4;
 871                 z |= (ext[5] >> 5) & 0x06;
 872         } else {
 873                 x |= (ext[5] >> 2) & 0x03;
 874                 y |= (ext[5] >> 4) & 0x03;
 875                 z |= (ext[5] >> 6) & 0x03;
 876         }
 877
 878         x -= 0x200;
 879         y -= 0x200;
 880         z -= 0x200;
 881
 882         input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 883         input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 884
 885         input_report_abs(wdata->extension.input, ABS_RX, x);
 886         input_report_abs(wdata->extension.input, ABS_RY, y);
 887         input_report_abs(wdata->extension.input, ABS_RZ, z);
 888
 889         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 890                 input_report_key(wdata->extension.input,
 891                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 892                         !(ext[5] & 0x04));
 893                 input_report_key(wdata->extension.input,
 894                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 895                         !(ext[5] & 0x08));
 896         } else {
 897                 input_report_key(wdata->extension.input,
 898                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 899                         !(ext[5] & 0x01));
 900                 input_report_key(wdata->extension.input,
 901                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 902                         !(ext[5] & 0x02));
 903         }
 904
 905         input_sync(wdata->extension.input);
 906 }
 907
 908 static int wiimod_nunchuk_open(struct input_dev *dev)
 909 {
 910         struct wiimote_data *wdata = input_get_drvdata(dev);
 911         unsigned long flags;
 912
 913         spin_lock_irqsave(&wdata->state.lock, flags);
 914         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 915         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 916         spin_unlock_irqrestore(&wdata->state.lock, flags);
 917
 918         return 0;
 919 }
 920
 921 static void wiimod_nunchuk_close(struct input_dev *dev)
 922 {
 923         struct wiimote_data *wdata = input_get_drvdata(dev);
 924         unsigned long flags;
 925
 926         spin_lock_irqsave(&wdata->state.lock, flags);
 927         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 928         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 929         spin_unlock_irqrestore(&wdata->state.lock, flags);
 930 }
 931
 932 static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 933                                 struct wiimote_data *wdata)
 934 {
 935         int ret, i;
 936
 937         wdata->extension.input = input_allocate_device();
 938         if (!wdata->extension.input)
 939                 return -ENOMEM;
 940
 941         input_set_drvdata(wdata->extension.input, wdata);
 942         wdata->extension.input->open = wiimod_nunchuk_open;
 943         wdata->extension.input->close = wiimod_nunchuk_close;
 944         wdata->extension.input->dev.parent = &wdata->hdev->dev;
 945         wdata->extension.input->id.bustype = wdata->hdev->bus;
 946         wdata->extension.input->id.vendor = wdata->hdev->vendor;
 947         wdata->extension.input->id.product = wdata->hdev->product;
 948         wdata->extension.input->id.version = wdata->hdev->version;
 949         wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 950
 951         set_bit(EV_KEY, wdata->extension.input->evbit);
 952         for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 953                 set_bit(wiimod_nunchuk_map[i],
 954                         wdata->extension.input->keybit);
 955
 956         set_bit(EV_ABS, wdata->extension.input->evbit);
 957         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 958         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 959         input_set_abs_params(wdata->extension.input,
 960                              ABS_HAT0X, -120, 120, 2, 4);
 961         input_set_abs_params(wdata->extension.input,
 962                              ABS_HAT0Y, -120, 120, 2, 4);
 963         set_bit(ABS_RX, wdata->extension.input->absbit);
 964         set_bit(ABS_RY, wdata->extension.input->absbit);
 965         set_bit(ABS_RZ, wdata->extension.input->absbit);
 966         input_set_abs_params(wdata->extension.input,
 967                              ABS_RX, -500, 500, 2, 4);
 968         input_set_abs_params(wdata->extension.input,
 969                              ABS_RY, -500, 500, 2, 4);
 970         input_set_abs_params(wdata->extension.input,
 971                              ABS_RZ, -500, 500, 2, 4);
 972
 973         ret = input_register_device(wdata->extension.input);
 974         if (ret)
 975                 goto err_free;
 976
 977         return 0;
 978
 979 err_free:
 980         input_free_device(wdata->extension.input);
 981         wdata->extension.input = NULL;
 982         return ret;
 983 }
 984
 985 static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 986                                   struct wiimote_data *wdata)
 987 {
 988         if (!wdata->extension.input)
 989                 return;
 990
 991         input_unregister_device(wdata->extension.input);
 992         wdata->extension.input = NULL;
 993 }
 994
 995 static const struct wiimod_ops wiimod_nunchuk = {
 996         .flags = 0,
 997         .arg = 0,
 998         .probe = wiimod_nunchuk_probe,
 999         .remove = wiimod_nunchuk_remove,
1000         .in_ext = wiimod_nunchuk_in_ext,
1001 };
1002
1003 /*
1004  * Classic Controller
1005  * Another official extension from Nintendo. It provides a classic
1006  * gamecube-like controller that can be hotplugged on the Wii Remote.
1007  * It has several hardware buttons and switches that are all reported via
1008  * a normal extension device.
1009  */
1010
1011 enum wiimod_classic_keys {
1012         WIIMOD_CLASSIC_KEY_A,
1013         WIIMOD_CLASSIC_KEY_B,
1014         WIIMOD_CLASSIC_KEY_X,
1015         WIIMOD_CLASSIC_KEY_Y,
1016         WIIMOD_CLASSIC_KEY_ZL,
1017         WIIMOD_CLASSIC_KEY_ZR,
1018         WIIMOD_CLASSIC_KEY_PLUS,
1019         WIIMOD_CLASSIC_KEY_MINUS,
1020         WIIMOD_CLASSIC_KEY_HOME,
1021         WIIMOD_CLASSIC_KEY_LEFT,
1022         WIIMOD_CLASSIC_KEY_RIGHT,
1023         WIIMOD_CLASSIC_KEY_UP,
1024         WIIMOD_CLASSIC_KEY_DOWN,
1025         WIIMOD_CLASSIC_KEY_LT,
1026         WIIMOD_CLASSIC_KEY_RT,
1027         WIIMOD_CLASSIC_KEY_NUM,
1028 };
1029
1030 static const __u16 wiimod_classic_map[] = {
1031         BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1032         BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1033         BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1034         BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1035         BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1036         BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1037         KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1038         KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1039         BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1040         KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1041         KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1042         KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1043         KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1044         BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1045         BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1046 };
1047
1048 static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1049 {
1050         __s8 rx, ry, lx, ly, lt, rt;
1051
1052         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1053          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1054          *    1   | RX <5:4>  |              LX <5:0>             |
1055          *    2   | RX <3:2>  |              LY <5:0>             |
1056          *   -----+-----+-----+-----+-----------------------------+
1057          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1058          *   -----+-----+-----------+-----------------------------+
1059          *    4   |     LT <3:1>    |         RT <5:1>            |
1060          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1061          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1062          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1063          *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1064          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1065          * All buttons are 0 if pressed
1066          * RX and RY are right analog stick
1067          * LX and LY are left analog stick
1068          * LT is left trigger, RT is right trigger
1069          * BLT is 0 if left trigger is fully pressed
1070          * BRT is 0 if right trigger is fully pressed
1071          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1072          * BZL is left Z button and BZR is right Z button
1073          * B-, BH, B+ are +, HOME and - buttons
1074          * BB, BY, BA, BX are A, B, X, Y buttons
1075          * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1076          *
1077          * With motionp enabled it changes slightly to this:
1078          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1079          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1080          *    1   | RX <5:4>  |          LX <5:1>           | BDU |
1081          *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1082          *   -----+-----+-----+-----+-----------------------+-----+
1083          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1084          *   -----+-----+-----------+-----------------------------+
1085          *    4   |     LT <3:1>    |         RT <5:1>            |
1086          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1087          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1088          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1089          *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1090          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1091          * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1092          * is the same as before.
1093          */
1094
1095         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1096                 lx = ext[0] & 0x3e;
1097                 ly = ext[1] & 0x3e;
1098         } else {
1099                 lx = ext[0] & 0x3f;
1100                 ly = ext[1] & 0x3f;
1101         }
1102
1103         rx = (ext[0] >> 3) & 0x18;
1104         rx |= (ext[1] >> 5) & 0x06;
1105         rx |= (ext[2] >> 7) & 0x01;
1106         ry = ext[2] & 0x1f;
1107
1108         rt = ext[3] & 0x1f;
1109         lt = (ext[2] >> 2) & 0x18;
1110         lt |= (ext[3] >> 5) & 0x07;
1111
1112         rx <<= 1;
1113         ry <<= 1;
1114         rt <<= 1;
1115         lt <<= 1;
1116
1117         input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
1118         input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
1119         input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1120         input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1121         input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
1122         input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1123
1124         input_report_key(wdata->extension.input,
1125                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1126                          !(ext[4] & 0x80));
1127         input_report_key(wdata->extension.input,
1128                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1129                          !(ext[4] & 0x40));
1130         input_report_key(wdata->extension.input,
1131                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1132                          !(ext[4] & 0x20));
1133         input_report_key(wdata->extension.input,
1134                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1135                          !(ext[4] & 0x10));
1136         input_report_key(wdata->extension.input,
1137                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1138                          !(ext[4] & 0x08));
1139         input_report_key(wdata->extension.input,
1140                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1141                          !(ext[4] & 0x04));
1142         input_report_key(wdata->extension.input,
1143                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1144                          !(ext[4] & 0x02));
1145         input_report_key(wdata->extension.input,
1146                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1147                          !(ext[5] & 0x80));
1148         input_report_key(wdata->extension.input,
1149                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1150                          !(ext[5] & 0x40));
1151         input_report_key(wdata->extension.input,
1152                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1153                          !(ext[5] & 0x20));
1154         input_report_key(wdata->extension.input,
1155                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1156                          !(ext[5] & 0x10));
1157         input_report_key(wdata->extension.input,
1158                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1159                          !(ext[5] & 0x08));
1160         input_report_key(wdata->extension.input,
1161                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1162                          !(ext[5] & 0x04));
1163
1164         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1165                 input_report_key(wdata->extension.input,
1166                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1167                          !(ext[1] & 0x01));
1168                 input_report_key(wdata->extension.input,
1169                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1170                          !(ext[0] & 0x01));
1171         } else {
1172                 input_report_key(wdata->extension.input,
1173                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1174                          !(ext[5] & 0x02));
1175                 input_report_key(wdata->extension.input,
1176                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1177                          !(ext[5] & 0x01));
1178         }
1179
1180         input_sync(wdata->extension.input);
1181 }
1182
1183 static int wiimod_classic_open(struct input_dev *dev)
1184 {
1185         struct wiimote_data *wdata = input_get_drvdata(dev);
1186         unsigned long flags;
1187
1188         spin_lock_irqsave(&wdata->state.lock, flags);
1189         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1190         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1191         spin_unlock_irqrestore(&wdata->state.lock, flags);
1192
1193         return 0;
1194 }
1195
1196 static void wiimod_classic_close(struct input_dev *dev)
1197 {
1198         struct wiimote_data *wdata = input_get_drvdata(dev);
1199         unsigned long flags;
1200
1201         spin_lock_irqsave(&wdata->state.lock, flags);
1202         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1203         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1204         spin_unlock_irqrestore(&wdata->state.lock, flags);
1205 }
1206
1207 static int wiimod_classic_probe(const struct wiimod_ops *ops,
1208                                 struct wiimote_data *wdata)
1209 {
1210         int ret, i;
1211
1212         wdata->extension.input = input_allocate_device();
1213         if (!wdata->extension.input)
1214                 return -ENOMEM;
1215
1216         input_set_drvdata(wdata->extension.input, wdata);
1217         wdata->extension.input->open = wiimod_classic_open;
1218         wdata->extension.input->close = wiimod_classic_close;
1219         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1220         wdata->extension.input->id.bustype = wdata->hdev->bus;
1221         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1222         wdata->extension.input->id.product = wdata->hdev->product;
1223         wdata->extension.input->id.version = wdata->hdev->version;
1224         wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1225
1226         set_bit(EV_KEY, wdata->extension.input->evbit);
1227         for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1228                 set_bit(wiimod_classic_map[i],
1229                         wdata->extension.input->keybit);
1230
1231         set_bit(EV_ABS, wdata->extension.input->evbit);
1232         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1233         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1234         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1235         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1236         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1237         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1238         input_set_abs_params(wdata->extension.input,
1239                              ABS_HAT1X, -30, 30, 1, 1);
1240         input_set_abs_params(wdata->extension.input,
1241                              ABS_HAT1Y, -30, 30, 1, 1);
1242         input_set_abs_params(wdata->extension.input,
1243                              ABS_HAT2X, -30, 30, 1, 1);
1244         input_set_abs_params(wdata->extension.input,
1245                              ABS_HAT2Y, -30, 30, 1, 1);
1246         input_set_abs_params(wdata->extension.input,
1247                              ABS_HAT3X, -30, 30, 1, 1);
1248         input_set_abs_params(wdata->extension.input,
1249                              ABS_HAT3Y, -30, 30, 1, 1);
1250
1251         ret = input_register_device(wdata->extension.input);
1252         if (ret)
1253                 goto err_free;
1254
1255         return 0;
1256
1257 err_free:
1258         input_free_device(wdata->extension.input);
1259         wdata->extension.input = NULL;
1260         return ret;
1261 }
1262
1263 static void wiimod_classic_remove(const struct wiimod_ops *ops,
1264                                   struct wiimote_data *wdata)
1265 {
1266         if (!wdata->extension.input)
1267                 return;
1268
1269         input_unregister_device(wdata->extension.input);
1270         wdata->extension.input = NULL;
1271 }
1272
1273 static const struct wiimod_ops wiimod_classic = {
1274         .flags = 0,
1275         .arg = 0,
1276         .probe = wiimod_classic_probe,
1277         .remove = wiimod_classic_remove,
1278         .in_ext = wiimod_classic_in_ext,
1279 };
1280
1281 /*
1282  * Balance Board Extension
1283  * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1284  * single push button. No other peripherals are available. However, the
1285  * balance-board data is sent via a standard Wii Remote extension. All other
1286  * data for non-present hardware is zeroed out.
1287  * Some 3rd party devices react allergic if we try to access normal Wii Remote
1288  * hardware, so this extension module should be the only module that is loaded
1289  * on balance boards.
1290  * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1291  * it needs the WIIMOD_FLAG_EXT8 flag.
1292  */
1293
1294 static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1295 {
1296         input_report_key(wdata->extension.input, BTN_A,
1297                          !!(keys[1] & 0x08));
1298         input_sync(wdata->extension.input);
1299 }
1300
1301 static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1302                                  const __u8 *ext)
1303 {
1304         __s32 val[4], tmp, div;
1305         unsigned int i;
1306         struct wiimote_state *s = &wdata->state;
1307
1308         /*
1309          * Balance board data layout:
1310          *
1311          *   Byte |  8  7  6  5  4  3  2  1  |
1312          *   -----+--------------------------+
1313          *    1   |    Top Right <15:8>      |
1314          *    2   |    Top Right  <7:0>      |
1315          *   -----+--------------------------+
1316          *    3   | Bottom Right <15:8>      |
1317          *    4   | Bottom Right  <7:0>      |
1318          *   -----+--------------------------+
1319          *    5   |     Top Left <15:8>      |
1320          *    6   |     Top Left  <7:0>      |
1321          *   -----+--------------------------+
1322          *    7   |  Bottom Left <15:8>      |
1323          *    8   |  Bottom Left  <7:0>      |
1324          *   -----+--------------------------+
1325          *
1326          * These values represent the weight-measurements of the Wii-balance
1327          * board with 16bit precision.
1328          *
1329          * The balance-board is never reported interleaved with motionp.
1330          */
1331
1332         val[0] = ext[0];
1333         val[0] <<= 8;
1334         val[0] |= ext[1];
1335
1336         val[1] = ext[2];
1337         val[1] <<= 8;
1338         val[1] |= ext[3];
1339
1340         val[2] = ext[4];
1341         val[2] <<= 8;
1342         val[2] |= ext[5];
1343
1344         val[3] = ext[6];
1345         val[3] <<= 8;
1346         val[3] |= ext[7];
1347
1348         /* apply calibration data */
1349         for (i = 0; i < 4; i++) {
1350                 if (val[i] <= s->calib_bboard[i][0]) {
1351                         tmp = 0;
1352                 } else if (val[i] < s->calib_bboard[i][1]) {
1353                         tmp = val[i] - s->calib_bboard[i][0];
1354                         tmp *= 1700;
1355                         div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1356                         tmp /= div ? div : 1;
1357                 } else {
1358                         tmp = val[i] - s->calib_bboard[i][1];
1359                         tmp *= 1700;
1360                         div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1361                         tmp /= div ? div : 1;
1362                         tmp += 1700;
1363                 }
1364                 val[i] = tmp;
1365         }
1366
1367         input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1368         input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1369         input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1370         input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1371         input_sync(wdata->extension.input);
1372 }
1373
1374 static int wiimod_bboard_open(struct input_dev *dev)
1375 {
1376         struct wiimote_data *wdata = input_get_drvdata(dev);
1377         unsigned long flags;
1378
1379         spin_lock_irqsave(&wdata->state.lock, flags);
1380         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1381         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1382         spin_unlock_irqrestore(&wdata->state.lock, flags);
1383
1384         return 0;
1385 }
1386
1387 static void wiimod_bboard_close(struct input_dev *dev)
1388 {
1389         struct wiimote_data *wdata = input_get_drvdata(dev);
1390         unsigned long flags;
1391
1392         spin_lock_irqsave(&wdata->state.lock, flags);
1393         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1394         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1395         spin_unlock_irqrestore(&wdata->state.lock, flags);
1396 }
1397
1398 static ssize_t wiimod_bboard_calib_show(struct device *dev,
1399                                         struct device_attribute *attr,
1400                                         char *out)
1401 {
1402         struct wiimote_data *wdata = dev_to_wii(dev);
1403         int i, j, ret;
1404         __u16 val;
1405         __u8 buf[24], offs;
1406
1407         ret = wiimote_cmd_acquire(wdata);
1408         if (ret)
1409                 return ret;
1410
1411         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1412         if (ret != 12) {
1413                 wiimote_cmd_release(wdata);
1414                 return ret < 0 ? ret : -EIO;
1415         }
1416         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1417         if (ret != 12) {
1418                 wiimote_cmd_release(wdata);
1419                 return ret < 0 ? ret : -EIO;
1420         }
1421
1422         wiimote_cmd_release(wdata);
1423
1424         spin_lock_irq(&wdata->state.lock);
1425         offs = 0;
1426         for (i = 0; i < 3; ++i) {
1427                 for (j = 0; j < 4; ++j) {
1428                         wdata->state.calib_bboard[j][i] = buf[offs];
1429                         wdata->state.calib_bboard[j][i] <<= 8;
1430                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1431                         offs += 2;
1432                 }
1433         }
1434         spin_unlock_irq(&wdata->state.lock);
1435
1436         ret = 0;
1437         for (i = 0; i < 3; ++i) {
1438                 for (j = 0; j < 4; ++j) {
1439                         val = wdata->state.calib_bboard[j][i];
1440                         if (i == 2 && j == 3)
1441                                 ret += sprintf(&out[ret], "%04x\n", val);
1442                         else
1443                                 ret += sprintf(&out[ret], "%04x:", val);
1444                 }
1445         }
1446
1447         return ret;
1448 }
1449
1450 static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1451
1452 static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1453                                struct wiimote_data *wdata)
1454 {
1455         int ret, i, j;
1456         __u8 buf[24], offs;
1457
1458         wiimote_cmd_acquire_noint(wdata);
1459
1460         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1461         if (ret != 12) {
1462                 wiimote_cmd_release(wdata);
1463                 return ret < 0 ? ret : -EIO;
1464         }
1465         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1466         if (ret != 12) {
1467                 wiimote_cmd_release(wdata);
1468                 return ret < 0 ? ret : -EIO;
1469         }
1470
1471         wiimote_cmd_release(wdata);
1472
1473         offs = 0;
1474         for (i = 0; i < 3; ++i) {
1475                 for (j = 0; j < 4; ++j) {
1476                         wdata->state.calib_bboard[j][i] = buf[offs];
1477                         wdata->state.calib_bboard[j][i] <<= 8;
1478                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1479                         offs += 2;
1480                 }
1481         }
1482
1483         wdata->extension.input = input_allocate_device();
1484         if (!wdata->extension.input)
1485                 return -ENOMEM;
1486
1487         ret = device_create_file(&wdata->hdev->dev,
1488                                  &dev_attr_bboard_calib);
1489         if (ret) {
1490                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1491                 goto err_free;
1492         }
1493
1494         input_set_drvdata(wdata->extension.input, wdata);
1495         wdata->extension.input->open = wiimod_bboard_open;
1496         wdata->extension.input->close = wiimod_bboard_close;
1497         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1498         wdata->extension.input->id.bustype = wdata->hdev->bus;
1499         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1500         wdata->extension.input->id.product = wdata->hdev->product;
1501         wdata->extension.input->id.version = wdata->hdev->version;
1502         wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1503
1504         set_bit(EV_KEY, wdata->extension.input->evbit);
1505         set_bit(BTN_A, wdata->extension.input->keybit);
1506
1507         set_bit(EV_ABS, wdata->extension.input->evbit);
1508         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1509         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1510         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1511         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1512         input_set_abs_params(wdata->extension.input,
1513                              ABS_HAT0X, 0, 65535, 2, 4);
1514         input_set_abs_params(wdata->extension.input,
1515                              ABS_HAT0Y, 0, 65535, 2, 4);
1516         input_set_abs_params(wdata->extension.input,
1517                              ABS_HAT1X, 0, 65535, 2, 4);
1518         input_set_abs_params(wdata->extension.input,
1519                              ABS_HAT1Y, 0, 65535, 2, 4);
1520
1521         ret = input_register_device(wdata->extension.input);
1522         if (ret)
1523                 goto err_file;
1524
1525         return 0;
1526
1527 err_file:
1528         device_remove_file(&wdata->hdev->dev,
1529                            &dev_attr_bboard_calib);
1530 err_free:
1531         input_free_device(wdata->extension.input);
1532         wdata->extension.input = NULL;
1533         return ret;
1534 }
1535
1536 static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1537                                  struct wiimote_data *wdata)
1538 {
1539         if (!wdata->extension.input)
1540                 return;
1541
1542         input_unregister_device(wdata->extension.input);
1543         wdata->extension.input = NULL;
1544         device_remove_file(&wdata->hdev->dev,
1545                            &dev_attr_bboard_calib);
1546 }
1547
1548 static const struct wiimod_ops wiimod_bboard = {
1549         .flags = WIIMOD_FLAG_EXT8,
1550         .arg = 0,
1551         .probe = wiimod_bboard_probe,
1552         .remove = wiimod_bboard_remove,
1553         .in_keys = wiimod_bboard_in_keys,
1554         .in_ext = wiimod_bboard_in_ext,
1555 };
1556
1557 /*
1558  * Pro Controller
1559  * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1560  * work together with the classic Wii, but only with the new Wii U. However, it
1561  * uses the same protocol and provides a builtin "classic controller pro"
1562  * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1563  * We provide all these via a standard extension device as the device doesn't
1564  * feature an extension port.
1565  */
1566
1567 enum wiimod_pro_keys {
1568         WIIMOD_PRO_KEY_A,
1569         WIIMOD_PRO_KEY_B,
1570         WIIMOD_PRO_KEY_X,
1571         WIIMOD_PRO_KEY_Y,
1572         WIIMOD_PRO_KEY_PLUS,
1573         WIIMOD_PRO_KEY_MINUS,
1574         WIIMOD_PRO_KEY_HOME,
1575         WIIMOD_PRO_KEY_LEFT,
1576         WIIMOD_PRO_KEY_RIGHT,
1577         WIIMOD_PRO_KEY_UP,
1578         WIIMOD_PRO_KEY_DOWN,
1579         WIIMOD_PRO_KEY_TL,
1580         WIIMOD_PRO_KEY_TR,
1581         WIIMOD_PRO_KEY_ZL,
1582         WIIMOD_PRO_KEY_ZR,
1583         WIIMOD_PRO_KEY_THUMBL,
1584         WIIMOD_PRO_KEY_THUMBR,
1585         WIIMOD_PRO_KEY_NUM,
1586 };
1587
1588 static const __u16 wiimod_pro_map[] = {
1589         BTN_EAST,       /* WIIMOD_PRO_KEY_A */
1590         BTN_SOUTH,      /* WIIMOD_PRO_KEY_B */
1591         BTN_NORTH,      /* WIIMOD_PRO_KEY_X */
1592         BTN_WEST,       /* WIIMOD_PRO_KEY_Y */
1593         BTN_START,      /* WIIMOD_PRO_KEY_PLUS */
1594         BTN_SELECT,     /* WIIMOD_PRO_KEY_MINUS */
1595         BTN_MODE,       /* WIIMOD_PRO_KEY_HOME */
1596         BTN_DPAD_LEFT,  /* WIIMOD_PRO_KEY_LEFT */
1597         BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1598         BTN_DPAD_UP,    /* WIIMOD_PRO_KEY_UP */
1599         BTN_DPAD_DOWN,  /* WIIMOD_PRO_KEY_DOWN */
1600         BTN_TL,         /* WIIMOD_PRO_KEY_TL */
1601         BTN_TR,         /* WIIMOD_PRO_KEY_TR */
1602         BTN_TL2,        /* WIIMOD_PRO_KEY_ZL */
1603         BTN_TR2,        /* WIIMOD_PRO_KEY_ZR */
1604         BTN_THUMBL,     /* WIIMOD_PRO_KEY_THUMBL */
1605         BTN_THUMBR,     /* WIIMOD_PRO_KEY_THUMBR */
1606 };
1607
1608 static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1609 {
1610         __s16 rx, ry, lx, ly;
1611
1612         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1613          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1614          *    1   |                   LX <7:0>                    |
1615          *   -----+-----------------------+-----------------------+
1616          *    2   |  0     0     0     0  |       LX <11:8>       |
1617          *   -----+-----------------------+-----------------------+
1618          *    3   |                   RX <7:0>                    |
1619          *   -----+-----------------------+-----------------------+
1620          *    4   |  0     0     0     0  |       RX <11:8>       |
1621          *   -----+-----------------------+-----------------------+
1622          *    5   |                   LY <7:0>                    |
1623          *   -----+-----------------------+-----------------------+
1624          *    6   |  0     0     0     0  |       LY <11:8>       |
1625          *   -----+-----------------------+-----------------------+
1626          *    7   |                   RY <7:0>                    |
1627          *   -----+-----------------------+-----------------------+
1628          *    8   |  0     0     0     0  |       RY <11:8>       |
1629          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1630          *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1631          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1632          *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1633          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1634          *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
1635          *   -----+-----+-----------------+-----------+-----+-----+
1636          * All buttons are low-active (0 if pressed)
1637          * RX and RY are right analog stick
1638          * LX and LY are left analog stick
1639          * BLT is left trigger, BRT is right trigger.
1640          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1641          * BZL is left Z button and BZR is right Z button
1642          * B-, BH, B+ are +, HOME and - buttons
1643          * BB, BY, BA, BX are A, B, X, Y buttons
1644          *
1645          * Bits marked as 0/1 are unknown and never changed during tests.
1646          *
1647          * Not entirely verified:
1648          *   CHARG: 1 if uncharging, 0 if charging
1649          *   USB: 1 if not connected, 0 if connected
1650          *   BATTERY: battery capacity from 000 (empty) to 100 (full)
1651          */
1652
1653         lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1654         rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1655         ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1656         ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1657
1658         /* zero-point offsets */
1659         lx -= 0x800;
1660         ly = 0x800 - ly;
1661         rx -= 0x800;
1662         ry = 0x800 - ry;
1663
1664         /* Trivial automatic calibration. We don't know any calibration data
1665          * in the EEPROM so we must use the first report to calibrate the
1666          * null-position of the analog sticks. Users can retrigger calibration
1667          * via sysfs, or set it explicitly. If data is off more than abs(500),
1668          * we skip calibration as the sticks are likely to be moved already. */
1669         if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1670                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1671                 if (abs(lx) < 500)
1672                         wdata->state.calib_pro_sticks[0] = -lx;
1673                 if (abs(ly) < 500)
1674                         wdata->state.calib_pro_sticks[1] = -ly;
1675                 if (abs(rx) < 500)
1676                         wdata->state.calib_pro_sticks[2] = -rx;
1677                 if (abs(ry) < 500)
1678                         wdata->state.calib_pro_sticks[3] = -ry;
1679         }
1680
1681         /* apply calibration data */
1682         lx += wdata->state.calib_pro_sticks[0];
1683         ly += wdata->state.calib_pro_sticks[1];
1684         rx += wdata->state.calib_pro_sticks[2];
1685         ry += wdata->state.calib_pro_sticks[3];
1686
1687         input_report_abs(wdata->extension.input, ABS_X, lx);
1688         input_report_abs(wdata->extension.input, ABS_Y, ly);
1689         input_report_abs(wdata->extension.input, ABS_RX, rx);
1690         input_report_abs(wdata->extension.input, ABS_RY, ry);
1691
1692         input_report_key(wdata->extension.input,
1693                          wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1694                          !(ext[8] & 0x80));
1695         input_report_key(wdata->extension.input,
1696                          wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1697                          !(ext[8] & 0x40));
1698         input_report_key(wdata->extension.input,
1699                          wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1700                          !(ext[8] & 0x20));
1701         input_report_key(wdata->extension.input,
1702                          wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1703                          !(ext[8] & 0x10));
1704         input_report_key(wdata->extension.input,
1705                          wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1706                          !(ext[8] & 0x08));
1707         input_report_key(wdata->extension.input,
1708                          wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1709                          !(ext[8] & 0x04));
1710         input_report_key(wdata->extension.input,
1711                          wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1712                          !(ext[8] & 0x02));
1713
1714         input_report_key(wdata->extension.input,
1715                          wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1716                          !(ext[9] & 0x80));
1717         input_report_key(wdata->extension.input,
1718                          wiimod_pro_map[WIIMOD_PRO_KEY_B],
1719                          !(ext[9] & 0x40));
1720         input_report_key(wdata->extension.input,
1721                          wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1722                          !(ext[9] & 0x20));
1723         input_report_key(wdata->extension.input,
1724                          wiimod_pro_map[WIIMOD_PRO_KEY_A],
1725                          !(ext[9] & 0x10));
1726         input_report_key(wdata->extension.input,
1727                          wiimod_pro_map[WIIMOD_PRO_KEY_X],
1728                          !(ext[9] & 0x08));
1729         input_report_key(wdata->extension.input,
1730                          wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1731                          !(ext[9] & 0x04));
1732         input_report_key(wdata->extension.input,
1733                          wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1734                          !(ext[9] & 0x02));
1735         input_report_key(wdata->extension.input,
1736                          wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1737                          !(ext[9] & 0x01));
1738
1739         input_report_key(wdata->extension.input,
1740                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1741                          !(ext[10] & 0x02));
1742         input_report_key(wdata->extension.input,
1743                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1744                          !(ext[10] & 0x01));
1745
1746         input_sync(wdata->extension.input);
1747 }
1748
1749 static int wiimod_pro_open(struct input_dev *dev)
1750 {
1751         struct wiimote_data *wdata = input_get_drvdata(dev);
1752         unsigned long flags;
1753
1754         spin_lock_irqsave(&wdata->state.lock, flags);
1755         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1756         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1757         spin_unlock_irqrestore(&wdata->state.lock, flags);
1758
1759         return 0;
1760 }
1761
1762 static void wiimod_pro_close(struct input_dev *dev)
1763 {
1764         struct wiimote_data *wdata = input_get_drvdata(dev);
1765         unsigned long flags;
1766
1767         spin_lock_irqsave(&wdata->state.lock, flags);
1768         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1769         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1770         spin_unlock_irqrestore(&wdata->state.lock, flags);
1771 }
1772
1773 static int wiimod_pro_play(struct input_dev *dev, void *data,
1774                            struct ff_effect *eff)
1775 {
1776         struct wiimote_data *wdata = input_get_drvdata(dev);
1777         __u8 value;
1778
1779         /*
1780          * The wiimote supports only a single rumble motor so if any magnitude
1781          * is set to non-zero then we start the rumble motor. If both are set to
1782          * zero, we stop the rumble motor.
1783          */
1784
1785         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1786                 value = 1;
1787         else
1788                 value = 0;
1789
1790         /* Locking state.lock here might deadlock with input_event() calls.
1791          * schedule_work acts as barrier. Merging multiple changes is fine. */
1792         wdata->state.cache_rumble = value;
1793         schedule_work(&wdata->rumble_worker);
1794
1795         return 0;
1796 }
1797
1798 static ssize_t wiimod_pro_calib_show(struct device *dev,
1799                                      struct device_attribute *attr,
1800                                      char *out)
1801 {
1802         struct wiimote_data *wdata = dev_to_wii(dev);
1803         int r;
1804
1805         r = 0;
1806         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
1807         r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
1808         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
1809         r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1810
1811         return r;
1812 }
1813
1814 static ssize_t wiimod_pro_calib_store(struct device *dev,
1815                                       struct device_attribute *attr,
1816                                       const char *buf, size_t count)
1817 {
1818         struct wiimote_data *wdata = dev_to_wii(dev);
1819         int r;
1820         s16 x1, y1, x2, y2;
1821
1822         if (!strncmp(buf, "scan\n", 5)) {
1823                 spin_lock_irq(&wdata->state.lock);
1824                 wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1825                 spin_unlock_irq(&wdata->state.lock);
1826         } else {
1827                 r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1828                 if (r != 4)
1829                         return -EINVAL;
1830
1831                 spin_lock_irq(&wdata->state.lock);
1832                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1833                 spin_unlock_irq(&wdata->state.lock);
1834
1835                 wdata->state.calib_pro_sticks[0] = x1;
1836                 wdata->state.calib_pro_sticks[1] = y1;
1837                 wdata->state.calib_pro_sticks[2] = x2;
1838                 wdata->state.calib_pro_sticks[3] = y2;
1839         }
1840
1841         return strnlen(buf, PAGE_SIZE);
1842 }
1843
1844 static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1845                    wiimod_pro_calib_store);
1846
1847 static int wiimod_pro_probe(const struct wiimod_ops *ops,
1848                             struct wiimote_data *wdata)
1849 {
1850         int ret, i;
1851         unsigned long flags;
1852
1853         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1854         wdata->state.calib_pro_sticks[0] = 0;
1855         wdata->state.calib_pro_sticks[1] = 0;
1856         wdata->state.calib_pro_sticks[2] = 0;
1857         wdata->state.calib_pro_sticks[3] = 0;
1858
1859         spin_lock_irqsave(&wdata->state.lock, flags);
1860         wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1861         spin_unlock_irqrestore(&wdata->state.lock, flags);
1862
1863         wdata->extension.input = input_allocate_device();
1864         if (!wdata->extension.input)
1865                 return -ENOMEM;
1866
1867         set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
1868         input_set_drvdata(wdata->extension.input, wdata);
1869
1870         if (input_ff_create_memless(wdata->extension.input, NULL,
1871                                     wiimod_pro_play)) {
1872                 ret = -ENOMEM;
1873                 goto err_free;
1874         }
1875
1876         ret = device_create_file(&wdata->hdev->dev,
1877                                  &dev_attr_pro_calib);
1878         if (ret) {
1879                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1880                 goto err_free;
1881         }
1882
1883         wdata->extension.input->open = wiimod_pro_open;
1884         wdata->extension.input->close = wiimod_pro_close;
1885         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1886         wdata->extension.input->id.bustype = wdata->hdev->bus;
1887         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1888         wdata->extension.input->id.product = wdata->hdev->product;
1889         wdata->extension.input->id.version = wdata->hdev->version;
1890         wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1891
1892         set_bit(EV_KEY, wdata->extension.input->evbit);
1893         for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1894                 set_bit(wiimod_pro_map[i],
1895                         wdata->extension.input->keybit);
1896
1897         set_bit(EV_ABS, wdata->extension.input->evbit);
1898         set_bit(ABS_X, wdata->extension.input->absbit);
1899         set_bit(ABS_Y, wdata->extension.input->absbit);
1900         set_bit(ABS_RX, wdata->extension.input->absbit);
1901         set_bit(ABS_RY, wdata->extension.input->absbit);
1902         input_set_abs_params(wdata->extension.input,
1903                              ABS_X, -0x400, 0x400, 4, 100);
1904         input_set_abs_params(wdata->extension.input,
1905                              ABS_Y, -0x400, 0x400, 4, 100);
1906         input_set_abs_params(wdata->extension.input,
1907                              ABS_RX, -0x400, 0x400, 4, 100);
1908         input_set_abs_params(wdata->extension.input,
1909                              ABS_RY, -0x400, 0x400, 4, 100);
1910
1911         ret = input_register_device(wdata->extension.input);
1912         if (ret)
1913                 goto err_file;
1914
1915         return 0;
1916
1917 err_file:
1918         device_remove_file(&wdata->hdev->dev,
1919                            &dev_attr_pro_calib);
1920 err_free:
1921         input_free_device(wdata->extension.input);
1922         wdata->extension.input = NULL;
1923         return ret;
1924 }
1925
1926 static void wiimod_pro_remove(const struct wiimod_ops *ops,
1927                               struct wiimote_data *wdata)
1928 {
1929         unsigned long flags;
1930
1931         if (!wdata->extension.input)
1932                 return;
1933
1934         input_unregister_device(wdata->extension.input);
1935         wdata->extension.input = NULL;
1936         cancel_work_sync(&wdata->rumble_worker);
1937         device_remove_file(&wdata->hdev->dev,
1938                            &dev_attr_pro_calib);
1939
1940         spin_lock_irqsave(&wdata->state.lock, flags);
1941         wiiproto_req_rumble(wdata, 0);
1942         spin_unlock_irqrestore(&wdata->state.lock, flags);
1943 }
1944
1945 static const struct wiimod_ops wiimod_pro = {
1946         .flags = WIIMOD_FLAG_EXT16,
1947         .arg = 0,
1948         .probe = wiimod_pro_probe,
1949         .remove = wiimod_pro_remove,
1950         .in_ext = wiimod_pro_in_ext,
1951 };
1952
1953 /*
1954  * Builtin Motion Plus
1955  * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
1956  * disables polling for Motion-Plus. This should be set only for devices which
1957  * don't allow MP hotplugging.
1958  */
1959
1960 static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
1961                                    struct wiimote_data *wdata)
1962 {
1963         unsigned long flags;
1964
1965         spin_lock_irqsave(&wdata->state.lock, flags);
1966         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1967         spin_unlock_irqrestore(&wdata->state.lock, flags);
1968
1969         return 0;
1970 }
1971
1972 static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
1973                                      struct wiimote_data *wdata)
1974 {
1975         unsigned long flags;
1976
1977         spin_lock_irqsave(&wdata->state.lock, flags);
1978         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1979         spin_unlock_irqrestore(&wdata->state.lock, flags);
1980 }
1981
1982 static const struct wiimod_ops wiimod_builtin_mp = {
1983         .flags = 0,
1984         .arg = 0,
1985         .probe = wiimod_builtin_mp_probe,
1986         .remove = wiimod_builtin_mp_remove,
1987 };
1988
1989 /*
1990  * No Motion Plus
1991  * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
1992  * disables motion-plus. This is needed for devices that advertise this but we
1993  * don't know how to use it (or whether it is actually present).
1994  */
1995
1996 static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
1997                               struct wiimote_data *wdata)
1998 {
1999         unsigned long flags;
2000
2001         spin_lock_irqsave(&wdata->state.lock, flags);
2002         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2003         spin_unlock_irqrestore(&wdata->state.lock, flags);
2004
2005         return 0;
2006 }
2007
2008 static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2009                                 struct wiimote_data *wdata)
2010 {
2011         unsigned long flags;
2012
2013         spin_lock_irqsave(&wdata->state.lock, flags);
2014         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2015         spin_unlock_irqrestore(&wdata->state.lock, flags);
2016 }
2017
2018 static const struct wiimod_ops wiimod_no_mp = {
2019         .flags = 0,
2020         .arg = 0,
2021         .probe = wiimod_no_mp_probe,
2022         .remove = wiimod_no_mp_remove,
2023 };
2024
2025 /*
2026  * Motion Plus
2027  * The Motion Plus extension provides rotation sensors (gyro) as a small
2028  * extension device for Wii Remotes. Many devices have them built-in so
2029  * you cannot see them from the outside.
2030  * Motion Plus extensions are special because they are on a separate extension
2031  * port and allow other extensions to be used simultaneously. This is all
2032  * handled by the Wiimote Core so we don't have to deal with it.
2033  */
2034
2035 static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2036 {
2037         __s32 x, y, z;
2038
2039         /*        |   8    7    6    5    4    3 |  2  |  1  |
2040          *   -----+------------------------------+-----+-----+
2041          *    1   |               Yaw Speed <7:0>            |
2042          *    2   |              Roll Speed <7:0>            |
2043          *    3   |             Pitch Speed <7:0>            |
2044          *   -----+------------------------------+-----+-----+
2045          *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
2046          *   -----+------------------------------+-----+-----+
2047          *    5   |      Roll Speed <13:8>       |Roll | Ext |
2048          *   -----+------------------------------+-----+-----+
2049          *    6   |     Pitch Speed <13:8>       |  1  |  0  |
2050          *   -----+------------------------------+-----+-----+
2051          * The single bits Yaw, Roll, Pitch in the lower right corner specify
2052          * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2053          * roation is 440 deg/s and for fast rotation 2000 deg/s. To get a
2054          * linear scale we multiply by 2000/440 = ~4.5454 which is 18 for fast
2055          * and 9 for slow.
2056          * If the wiimote is not rotating the sensor reports 2^13 = 8192.
2057          * Ext specifies whether an extension is connected to the motionp.
2058          * which is parsed by wiimote-core.
2059          */
2060
2061         x = ext[0];
2062         y = ext[1];
2063         z = ext[2];
2064
2065         x |= (((__u16)ext[3]) << 6) & 0xff00;
2066         y |= (((__u16)ext[4]) << 6) & 0xff00;
2067         z |= (((__u16)ext[5]) << 6) & 0xff00;
2068
2069         x -= 8192;
2070         y -= 8192;
2071         z -= 8192;
2072
2073         if (!(ext[3] & 0x02))
2074                 x *= 18;
2075         else
2076                 x *= 9;
2077         if (!(ext[4] & 0x02))
2078                 y *= 18;
2079         else
2080                 y *= 9;
2081         if (!(ext[3] & 0x01))
2082                 z *= 18;
2083         else
2084                 z *= 9;
2085
2086         input_report_abs(wdata->mp, ABS_RX, x);
2087         input_report_abs(wdata->mp, ABS_RY, y);
2088         input_report_abs(wdata->mp, ABS_RZ, z);
2089         input_sync(wdata->mp);
2090 }
2091
2092 static int wiimod_mp_open(struct input_dev *dev)
2093 {
2094         struct wiimote_data *wdata = input_get_drvdata(dev);
2095         unsigned long flags;
2096
2097         spin_lock_irqsave(&wdata->state.lock, flags);
2098         wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2099         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2100         __wiimote_schedule(wdata);
2101         spin_unlock_irqrestore(&wdata->state.lock, flags);
2102
2103         return 0;
2104 }
2105
2106 static void wiimod_mp_close(struct input_dev *dev)
2107 {
2108         struct wiimote_data *wdata = input_get_drvdata(dev);
2109         unsigned long flags;
2110
2111         spin_lock_irqsave(&wdata->state.lock, flags);
2112         wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2113         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2114         __wiimote_schedule(wdata);
2115         spin_unlock_irqrestore(&wdata->state.lock, flags);
2116 }
2117
2118 static int wiimod_mp_probe(const struct wiimod_ops *ops,
2119                            struct wiimote_data *wdata)
2120 {
2121         int ret;
2122
2123         wdata->mp = input_allocate_device();
2124         if (!wdata->mp)
2125                 return -ENOMEM;
2126
2127         input_set_drvdata(wdata->mp, wdata);
2128         wdata->mp->open = wiimod_mp_open;
2129         wdata->mp->close = wiimod_mp_close;
2130         wdata->mp->dev.parent = &wdata->hdev->dev;
2131         wdata->mp->id.bustype = wdata->hdev->bus;
2132         wdata->mp->id.vendor = wdata->hdev->vendor;
2133         wdata->mp->id.product = wdata->hdev->product;
2134         wdata->mp->id.version = wdata->hdev->version;
2135         wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2136
2137         set_bit(EV_ABS, wdata->mp->evbit);
2138         set_bit(ABS_RX, wdata->mp->absbit);
2139         set_bit(ABS_RY, wdata->mp->absbit);
2140         set_bit(ABS_RZ, wdata->mp->absbit);
2141         input_set_abs_params(wdata->mp,
2142                              ABS_RX, -16000, 16000, 4, 8);
2143         input_set_abs_params(wdata->mp,
2144                              ABS_RY, -16000, 16000, 4, 8);
2145         input_set_abs_params(wdata->mp,
2146                              ABS_RZ, -16000, 16000, 4, 8);
2147
2148         ret = input_register_device(wdata->mp);
2149         if (ret)
2150                 goto err_free;
2151
2152         return 0;
2153
2154 err_free:
2155         input_free_device(wdata->mp);
2156         wdata->mp = NULL;
2157         return ret;
2158 }
2159
2160 static void wiimod_mp_remove(const struct wiimod_ops *ops,
2161                              struct wiimote_data *wdata)
2162 {
2163         if (!wdata->mp)
2164                 return;
2165
2166         input_unregister_device(wdata->mp);
2167         wdata->mp = NULL;
2168 }
2169
2170 const struct wiimod_ops wiimod_mp = {
2171         .flags = 0,
2172         .arg = 0,
2173         .probe = wiimod_mp_probe,
2174         .remove = wiimod_mp_remove,
2175         .in_mp = wiimod_mp_in_mp,
2176 };
2177
2178 /* module table */
2179
2180 static const struct wiimod_ops wiimod_dummy;
2181
2182 const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2183         [WIIMOD_KEYS] = &wiimod_keys,
2184         [WIIMOD_RUMBLE] = &wiimod_rumble,
2185         [WIIMOD_BATTERY] = &wiimod_battery,
2186         [WIIMOD_LED1] = &wiimod_leds[0],
2187         [WIIMOD_LED2] = &wiimod_leds[1],
2188         [WIIMOD_LED3] = &wiimod_leds[2],
2189         [WIIMOD_LED4] = &wiimod_leds[3],
2190         [WIIMOD_ACCEL] = &wiimod_accel,
2191         [WIIMOD_IR] = &wiimod_ir,
2192         [WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2193         [WIIMOD_NO_MP] = &wiimod_no_mp,
2194 };
2195
2196 const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2197         [WIIMOTE_EXT_NONE] = &wiimod_dummy,
2198         [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2199         [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2200         [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2201         [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2202         [WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2203 };