drivers/hid/hid-wiimote-modules.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Device Modules for Nintendo Wii / Wii U HID Driver
   4  * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
   5  */
   6
   7 /*
   8  */
   9
  10 /*
  11  * Wiimote Modules
  12  * Nintendo devices provide different peripherals and many new devices lack
  13  * initial features like the IR camera. Therefore, each peripheral device is
  14  * implemented as an independent module and we probe on each device only the
  15  * modules for the hardware that really is available.
  16  *
  17  * Module registration is sequential. Unregistration is done in reverse order.
  18  * After device detection, the needed modules are loaded. Users can trigger
  19  * re-detection which causes all modules to be unloaded and then reload the
  20  * modules for the new detected device.
  21  *
  22  * wdata->input is a shared input device. It is always initialized prior to
  23  * module registration. If at least one registered module is marked as
  24  * WIIMOD_FLAG_INPUT, then the input device will get registered after all
  25  * modules were registered.
  26  * Please note that it is unregistered _before_ the "remove" callbacks are
  27  * called. This guarantees that no input interaction is done, anymore. However,
  28  * the wiimote core keeps a reference to the input device so it is freed only
  29  * after all modules were removed. It is safe to send events to unregistered
  30  * input devices.
  31  */
  32
  33 #include <linux/device.h>
  34 #include <linux/hid.h>
  35 #include <linux/input.h>
  36 #include <linux/spinlock.h>
  37 #include "hid-wiimote.h"
  38
  39 /*
  40  * Keys
  41  * The initial Wii Remote provided a bunch of buttons that are reported as
  42  * part of the core protocol. Many later devices dropped these and report
  43  * invalid data in the core button reports. Load this only on devices which
  44  * correctly send button reports.
  45  * It uses the shared input device.
  46  */
  47
  48 static const __u16 wiimod_keys_map[] = {
  49         KEY_LEFT,       /* WIIPROTO_KEY_LEFT */
  50         KEY_RIGHT,      /* WIIPROTO_KEY_RIGHT */
  51         KEY_UP,         /* WIIPROTO_KEY_UP */
  52         KEY_DOWN,       /* WIIPROTO_KEY_DOWN */
  53         KEY_NEXT,       /* WIIPROTO_KEY_PLUS */
  54         KEY_PREVIOUS,   /* WIIPROTO_KEY_MINUS */
  55         BTN_1,          /* WIIPROTO_KEY_ONE */
  56         BTN_2,          /* WIIPROTO_KEY_TWO */
  57         BTN_A,          /* WIIPROTO_KEY_A */
  58         BTN_B,          /* WIIPROTO_KEY_B */
  59         BTN_MODE,       /* WIIPROTO_KEY_HOME */
  60 };
  61
  62 static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
  63 {
  64         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
  65                                                         !!(keys[0] & 0x01));
  66         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
  67                                                         !!(keys[0] & 0x02));
  68         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
  69                                                         !!(keys[0] & 0x04));
  70         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
  71                                                         !!(keys[0] & 0x08));
  72         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
  73                                                         !!(keys[0] & 0x10));
  74         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
  75                                                         !!(keys[1] & 0x01));
  76         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
  77                                                         !!(keys[1] & 0x02));
  78         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
  79                                                         !!(keys[1] & 0x04));
  80         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
  81                                                         !!(keys[1] & 0x08));
  82         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
  83                                                         !!(keys[1] & 0x10));
  84         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
  85                                                         !!(keys[1] & 0x80));
  86         input_sync(wdata->input);
  87 }
  88
  89 static int wiimod_keys_probe(const struct wiimod_ops *ops,
  90                              struct wiimote_data *wdata)
  91 {
  92         unsigned int i;
  93
  94         set_bit(EV_KEY, wdata->input->evbit);
  95         for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
  96                 set_bit(wiimod_keys_map[i], wdata->input->keybit);
  97
  98         return 0;
  99 }
 100
 101 static const struct wiimod_ops wiimod_keys = {
 102         .flags = WIIMOD_FLAG_INPUT,
 103         .arg = 0,
 104         .probe = wiimod_keys_probe,
 105         .remove = NULL,
 106         .in_keys = wiimod_keys_in_keys,
 107 };
 108
 109 /*
 110  * Rumble
 111  * Nearly all devices provide a rumble feature. A small motor for
 112  * force-feedback effects. We provide an FF_RUMBLE memless ff device on the
 113  * shared input device if this module is loaded.
 114  * The rumble motor is controlled via a flag on almost every output report so
 115  * the wiimote core handles the rumble flag. But if a device doesn't provide
 116  * the rumble motor, this flag shouldn't be set.
 117  */
 118
 119 /* used by wiimod_rumble and wiipro_rumble */
 120 static void wiimod_rumble_worker(struct work_struct *work)
 121 {
 122         struct wiimote_data *wdata = container_of(work, struct wiimote_data,
 123                                                   rumble_worker);
 124
 125         spin_lock_irq(&wdata->state.lock);
 126         wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
 127         spin_unlock_irq(&wdata->state.lock);
 128 }
 129
 130 static int wiimod_rumble_play(struct input_dev *dev, void *data,
 131                               struct ff_effect *eff)
 132 {
 133         struct wiimote_data *wdata = input_get_drvdata(dev);
 134         __u8 value;
 135
 136         /*
 137          * The wiimote supports only a single rumble motor so if any magnitude
 138          * is set to non-zero then we start the rumble motor. If both are set to
 139          * zero, we stop the rumble motor.
 140          */
 141
 142         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 143                 value = 1;
 144         else
 145                 value = 0;
 146
 147         /* Locking state.lock here might deadlock with input_event() calls.
 148          * schedule_work acts as barrier. Merging multiple changes is fine. */
 149         wdata->state.cache_rumble = value;
 150         schedule_work(&wdata->rumble_worker);
 151
 152         return 0;
 153 }
 154
 155 static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 156                                struct wiimote_data *wdata)
 157 {
 158         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
 159
 160         set_bit(FF_RUMBLE, wdata->input->ffbit);
 161         if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 162                 return -ENOMEM;
 163
 164         return 0;
 165 }
 166
 167 static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 168                                  struct wiimote_data *wdata)
 169 {
 170         unsigned long flags;
 171
 172         cancel_work_sync(&wdata->rumble_worker);
 173
 174         spin_lock_irqsave(&wdata->state.lock, flags);
 175         wiiproto_req_rumble(wdata, 0);
 176         spin_unlock_irqrestore(&wdata->state.lock, flags);
 177 }
 178
 179 static const struct wiimod_ops wiimod_rumble = {
 180         .flags = WIIMOD_FLAG_INPUT,
 181         .arg = 0,
 182         .probe = wiimod_rumble_probe,
 183         .remove = wiimod_rumble_remove,
 184 };
 185
 186 /*
 187  * Battery
 188  * 1 byte of battery capacity information is sent along every protocol status
 189  * report. The wiimote core caches it but we try to update it on every
 190  * user-space request.
 191  * This is supported by nearly every device so it's almost always enabled.
 192  */
 193
 194 static enum power_supply_property wiimod_battery_props[] = {
 195         POWER_SUPPLY_PROP_CAPACITY,
 196         POWER_SUPPLY_PROP_SCOPE,
 197 };
 198
 199 static int wiimod_battery_get_property(struct power_supply *psy,
 200                                        enum power_supply_property psp,
 201                                        union power_supply_propval *val)
 202 {
 203         struct wiimote_data *wdata = power_supply_get_drvdata(psy);
 204         int ret = 0, state;
 205         unsigned long flags;
 206
 207         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 208                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 209                 return 0;
 210         } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 211                 return -EINVAL;
 212         }
 213
 214         ret = wiimote_cmd_acquire(wdata);
 215         if (ret)
 216                 return ret;
 217
 218         spin_lock_irqsave(&wdata->state.lock, flags);
 219         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 220         wiiproto_req_status(wdata);
 221         spin_unlock_irqrestore(&wdata->state.lock, flags);
 222
 223         wiimote_cmd_wait(wdata);
 224         wiimote_cmd_release(wdata);
 225
 226         spin_lock_irqsave(&wdata->state.lock, flags);
 227         state = wdata->state.cmd_battery;
 228         spin_unlock_irqrestore(&wdata->state.lock, flags);
 229
 230         val->intval = state * 100 / 255;
 231         return ret;
 232 }
 233
 234 static int wiimod_battery_probe(const struct wiimod_ops *ops,
 235                                 struct wiimote_data *wdata)
 236 {
 237         struct power_supply_config psy_cfg = { .drv_data = wdata, };
 238         int ret;
 239
 240         wdata->battery_desc.properties = wiimod_battery_props;
 241         wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
 242         wdata->battery_desc.get_property = wiimod_battery_get_property;
 243         wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 244         wdata->battery_desc.use_for_apm = 0;
 245         wdata->battery_desc.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 246                                              wdata->hdev->uniq);
 247         if (!wdata->battery_desc.name)
 248                 return -ENOMEM;
 249
 250         wdata->battery = power_supply_register(&wdata->hdev->dev,
 251                                                &wdata->battery_desc,
 252                                                &psy_cfg);
 253         if (IS_ERR(wdata->battery)) {
 254                 hid_err(wdata->hdev, "cannot register battery device\n");
 255                 ret = PTR_ERR(wdata->battery);
 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_desc.name);
 264         wdata->battery_desc.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_desc.name)
 272                 return;
 273
 274         power_supply_unregister(wdata->battery);
 275         kfree(wdata->battery_desc.name);
 276         wdata->battery_desc.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 device *dev = led_dev->dev->parent;
 297         struct wiimote_data *wdata = dev_to_wii(dev);
 298         int i;
 299         unsigned long flags;
 300         bool value = false;
 301
 302         for (i = 0; i < 4; ++i) {
 303                 if (wdata->leds[i] == led_dev) {
 304                         spin_lock_irqsave(&wdata->state.lock, flags);
 305                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 306                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 307                         break;
 308                 }
 309         }
 310
 311         return value ? LED_FULL : LED_OFF;
 312 }
 313
 314 static void wiimod_led_set(struct led_classdev *led_dev,
 315                            enum led_brightness value)
 316 {
 317         struct device *dev = led_dev->dev->parent;
 318         struct wiimote_data *wdata = dev_to_wii(dev);
 319         int i;
 320         unsigned long flags;
 321         __u8 state, flag;
 322
 323         for (i = 0; i < 4; ++i) {
 324                 if (wdata->leds[i] == led_dev) {
 325                         flag = WIIPROTO_FLAG_LED(i + 1);
 326                         spin_lock_irqsave(&wdata->state.lock, flags);
 327                         state = wdata->state.flags;
 328                         if (value == LED_OFF)
 329                                 wiiproto_req_leds(wdata, state & ~flag);
 330                         else
 331                                 wiiproto_req_leds(wdata, state | flag);
 332                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 333                         break;
 334                 }
 335         }
 336 }
 337
 338 static int wiimod_led_probe(const struct wiimod_ops *ops,
 339                             struct wiimote_data *wdata)
 340 {
 341         struct device *dev = &wdata->hdev->dev;
 342         size_t namesz = strlen(dev_name(dev)) + 9;
 343         struct led_classdev *led;
 344         unsigned long flags;
 345         char *name;
 346         int ret;
 347
 348         led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 349         if (!led)
 350                 return -ENOMEM;
 351
 352         name = (void*)&led[1];
 353         snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 354         led->name = name;
 355         led->brightness = 0;
 356         led->max_brightness = 1;
 357         led->brightness_get = wiimod_led_get;
 358         led->brightness_set = wiimod_led_set;
 359
 360         wdata->leds[ops->arg] = led;
 361         ret = led_classdev_register(dev, led);
 362         if (ret)
 363                 goto err_free;
 364
 365         /* enable LED1 to stop initial LED-blinking */
 366         if (ops->arg == 0) {
 367                 spin_lock_irqsave(&wdata->state.lock, flags);
 368                 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 369                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 370         }
 371
 372         return 0;
 373
 374 err_free:
 375         wdata->leds[ops->arg] = NULL;
 376         kfree(led);
 377         return ret;
 378 }
 379
 380 static void wiimod_led_remove(const struct wiimod_ops *ops,
 381                               struct wiimote_data *wdata)
 382 {
 383         if (!wdata->leds[ops->arg])
 384                 return;
 385
 386         led_classdev_unregister(wdata->leds[ops->arg]);
 387         kfree(wdata->leds[ops->arg]);
 388         wdata->leds[ops->arg] = NULL;
 389 }
 390
 391 static const struct wiimod_ops wiimod_leds[4] = {
 392         {
 393                 .flags = 0,
 394                 .arg = 0,
 395                 .probe = wiimod_led_probe,
 396                 .remove = wiimod_led_remove,
 397         },
 398         {
 399                 .flags = 0,
 400                 .arg = 1,
 401                 .probe = wiimod_led_probe,
 402                 .remove = wiimod_led_remove,
 403         },
 404         {
 405                 .flags = 0,
 406                 .arg = 2,
 407                 .probe = wiimod_led_probe,
 408                 .remove = wiimod_led_remove,
 409         },
 410         {
 411                 .flags = 0,
 412                 .arg = 3,
 413                 .probe = wiimod_led_probe,
 414                 .remove = wiimod_led_remove,
 415         },
 416 };
 417
 418 /*
 419  * Accelerometer
 420  * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 421  * device, it's mostly cleared to 0. This module parses this data and provides
 422  * it via a separate input device.
 423  */
 424
 425 static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 426                                   const __u8 *accel)
 427 {
 428         __u16 x, y, z;
 429
 430         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 431                 return;
 432
 433         /*
 434          * payload is: BB BB XX YY ZZ
 435          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 436          * contain the upper 8 bits of each value. The lower 2 bits are
 437          * contained in the buttons data BB BB.
 438          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 439          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 440          * accel value and bit 6 is the second bit of the Z value.
 441          * The first bit of Y and Z values is not available and always set to 0.
 442          * 0x200 is returned on no movement.
 443          */
 444
 445         x = accel[2] << 2;
 446         y = accel[3] << 2;
 447         z = accel[4] << 2;
 448
 449         x |= (accel[0] >> 5) & 0x3;
 450         y |= (accel[1] >> 4) & 0x2;
 451         z |= (accel[1] >> 5) & 0x2;
 452
 453         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 454         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 455         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 456         input_sync(wdata->accel);
 457 }
 458
 459 static int wiimod_accel_open(struct input_dev *dev)
 460 {
 461         struct wiimote_data *wdata = input_get_drvdata(dev);
 462         unsigned long flags;
 463
 464         spin_lock_irqsave(&wdata->state.lock, flags);
 465         wiiproto_req_accel(wdata, true);
 466         spin_unlock_irqrestore(&wdata->state.lock, flags);
 467
 468         return 0;
 469 }
 470
 471 static void wiimod_accel_close(struct input_dev *dev)
 472 {
 473         struct wiimote_data *wdata = input_get_drvdata(dev);
 474         unsigned long flags;
 475
 476         spin_lock_irqsave(&wdata->state.lock, flags);
 477         wiiproto_req_accel(wdata, false);
 478         spin_unlock_irqrestore(&wdata->state.lock, flags);
 479 }
 480
 481 static int wiimod_accel_probe(const struct wiimod_ops *ops,
 482                               struct wiimote_data *wdata)
 483 {
 484         int ret;
 485
 486         wdata->accel = input_allocate_device();
 487         if (!wdata->accel)
 488                 return -ENOMEM;
 489
 490         input_set_drvdata(wdata->accel, wdata);
 491         wdata->accel->open = wiimod_accel_open;
 492         wdata->accel->close = wiimod_accel_close;
 493         wdata->accel->dev.parent = &wdata->hdev->dev;
 494         wdata->accel->id.bustype = wdata->hdev->bus;
 495         wdata->accel->id.vendor = wdata->hdev->vendor;
 496         wdata->accel->id.product = wdata->hdev->product;
 497         wdata->accel->id.version = wdata->hdev->version;
 498         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 499
 500         set_bit(EV_ABS, wdata->accel->evbit);
 501         set_bit(ABS_RX, wdata->accel->absbit);
 502         set_bit(ABS_RY, wdata->accel->absbit);
 503         set_bit(ABS_RZ, wdata->accel->absbit);
 504         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 505         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 506         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 507
 508         ret = input_register_device(wdata->accel);
 509         if (ret) {
 510                 hid_err(wdata->hdev, "cannot register input device\n");
 511                 goto err_free;
 512         }
 513
 514         return 0;
 515
 516 err_free:
 517         input_free_device(wdata->accel);
 518         wdata->accel = NULL;
 519         return ret;
 520 }
 521
 522 static void wiimod_accel_remove(const struct wiimod_ops *ops,
 523                                 struct wiimote_data *wdata)
 524 {
 525         if (!wdata->accel)
 526                 return;
 527
 528         input_unregister_device(wdata->accel);
 529         wdata->accel = NULL;
 530 }
 531
 532 static const struct wiimod_ops wiimod_accel = {
 533         .flags = 0,
 534         .arg = 0,
 535         .probe = wiimod_accel_probe,
 536         .remove = wiimod_accel_remove,
 537         .in_accel = wiimod_accel_in_accel,
 538 };
 539
 540 /*
 541  * IR Cam
 542  * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 543  * to be initialized with a fairly complex procedure and consumes a lot of
 544  * power. Therefore, as long as no application uses the IR input device, it is
 545  * kept offline.
 546  * Nearly no other device than the normal Wii Remotes supports the IR cam so
 547  * you can disable this module for these devices.
 548  */
 549
 550 static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 551                             bool packed, unsigned int id)
 552 {
 553         __u16 x, y;
 554         __u8 xid, yid;
 555         bool sync = false;
 556
 557         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 558                 return;
 559
 560         switch (id) {
 561         case 0:
 562                 xid = ABS_HAT0X;
 563                 yid = ABS_HAT0Y;
 564                 break;
 565         case 1:
 566                 xid = ABS_HAT1X;
 567                 yid = ABS_HAT1Y;
 568                 break;
 569         case 2:
 570                 xid = ABS_HAT2X;
 571                 yid = ABS_HAT2Y;
 572                 break;
 573         case 3:
 574                 xid = ABS_HAT3X;
 575                 yid = ABS_HAT3Y;
 576                 sync = true;
 577                 break;
 578         default:
 579                 return;
 580         }
 581
 582         /*
 583          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 584          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 585          * of both.
 586          * If data is packed, then the 3rd byte is put first and slightly
 587          * reordered. This allows to interleave packed and non-packed data to
 588          * have two IR sets in 5 bytes instead of 6.
 589          * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 590          */
 591
 592         if (packed) {
 593                 x = ir[1] | ((ir[0] & 0x03) << 8);
 594                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 595         } else {
 596                 x = ir[0] | ((ir[2] & 0x30) << 4);
 597                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 598         }
 599
 600         input_report_abs(wdata->ir, xid, x);
 601         input_report_abs(wdata->ir, yid, y);
 602
 603         if (sync)
 604                 input_sync(wdata->ir);
 605 }
 606
 607 static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 608 {
 609         int ret;
 610         unsigned long flags;
 611         __u8 format = 0;
 612         static const __u8 data_enable[] = { 0x01 };
 613         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 614                                                 0x00, 0xaa, 0x00, 0x64 };
 615         static const __u8 data_sens2[] = { 0x63, 0x03 };
 616         static const __u8 data_fin[] = { 0x08 };
 617
 618         spin_lock_irqsave(&wdata->state.lock, flags);
 619
 620         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 621                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 622                 return 0;
 623         }
 624
 625         if (mode == 0) {
 626                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 627                 wiiproto_req_ir1(wdata, 0);
 628                 wiiproto_req_ir2(wdata, 0);
 629                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 630                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 631                 return 0;
 632         }
 633
 634         spin_unlock_irqrestore(&wdata->state.lock, flags);
 635
 636         ret = wiimote_cmd_acquire(wdata);
 637         if (ret)
 638                 return ret;
 639
 640         /* send PIXEL CLOCK ENABLE cmd first */
 641         spin_lock_irqsave(&wdata->state.lock, flags);
 642         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 643         wiiproto_req_ir1(wdata, 0x06);
 644         spin_unlock_irqrestore(&wdata->state.lock, flags);
 645
 646         ret = wiimote_cmd_wait(wdata);
 647         if (ret)
 648                 goto unlock;
 649         if (wdata->state.cmd_err) {
 650                 ret = -EIO;
 651                 goto unlock;
 652         }
 653
 654         /* enable IR LOGIC */
 655         spin_lock_irqsave(&wdata->state.lock, flags);
 656         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 657         wiiproto_req_ir2(wdata, 0x06);
 658         spin_unlock_irqrestore(&wdata->state.lock, flags);
 659
 660         ret = wiimote_cmd_wait(wdata);
 661         if (ret)
 662                 goto unlock;
 663         if (wdata->state.cmd_err) {
 664                 ret = -EIO;
 665                 goto unlock;
 666         }
 667
 668         /* enable IR cam but do not make it send data, yet */
 669         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 670                                                         sizeof(data_enable));
 671         if (ret)
 672                 goto unlock;
 673
 674         /* write first sensitivity block */
 675         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 676                                                         sizeof(data_sens1));
 677         if (ret)
 678                 goto unlock;
 679
 680         /* write second sensitivity block */
 681         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 682                                                         sizeof(data_sens2));
 683         if (ret)
 684                 goto unlock;
 685
 686         /* put IR cam into desired state */
 687         switch (mode) {
 688                 case WIIPROTO_FLAG_IR_FULL:
 689                         format = 5;
 690                         break;
 691                 case WIIPROTO_FLAG_IR_EXT:
 692                         format = 3;
 693                         break;
 694                 case WIIPROTO_FLAG_IR_BASIC:
 695                         format = 1;
 696                         break;
 697         }
 698         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 699         if (ret)
 700                 goto unlock;
 701
 702         /* make IR cam send data */
 703         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 704         if (ret)
 705                 goto unlock;
 706
 707         /* request new DRM mode compatible to IR mode */
 708         spin_lock_irqsave(&wdata->state.lock, flags);
 709         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 710         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 711         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 712         spin_unlock_irqrestore(&wdata->state.lock, flags);
 713
 714 unlock:
 715         wiimote_cmd_release(wdata);
 716         return ret;
 717 }
 718
 719 static int wiimod_ir_open(struct input_dev *dev)
 720 {
 721         struct wiimote_data *wdata = input_get_drvdata(dev);
 722
 723         return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 724 }
 725
 726 static void wiimod_ir_close(struct input_dev *dev)
 727 {
 728         struct wiimote_data *wdata = input_get_drvdata(dev);
 729
 730         wiimod_ir_change(wdata, 0);
 731 }
 732
 733 static int wiimod_ir_probe(const struct wiimod_ops *ops,
 734                            struct wiimote_data *wdata)
 735 {
 736         int ret;
 737
 738         wdata->ir = input_allocate_device();
 739         if (!wdata->ir)
 740                 return -ENOMEM;
 741
 742         input_set_drvdata(wdata->ir, wdata);
 743         wdata->ir->open = wiimod_ir_open;
 744         wdata->ir->close = wiimod_ir_close;
 745         wdata->ir->dev.parent = &wdata->hdev->dev;
 746         wdata->ir->id.bustype = wdata->hdev->bus;
 747         wdata->ir->id.vendor = wdata->hdev->vendor;
 748         wdata->ir->id.product = wdata->hdev->product;
 749         wdata->ir->id.version = wdata->hdev->version;
 750         wdata->ir->name = WIIMOTE_NAME " IR";
 751
 752         set_bit(EV_ABS, wdata->ir->evbit);
 753         set_bit(ABS_HAT0X, wdata->ir->absbit);
 754         set_bit(ABS_HAT0Y, wdata->ir->absbit);
 755         set_bit(ABS_HAT1X, wdata->ir->absbit);
 756         set_bit(ABS_HAT1Y, wdata->ir->absbit);
 757         set_bit(ABS_HAT2X, wdata->ir->absbit);
 758         set_bit(ABS_HAT2Y, wdata->ir->absbit);
 759         set_bit(ABS_HAT3X, wdata->ir->absbit);
 760         set_bit(ABS_HAT3Y, wdata->ir->absbit);
 761         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 762         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 763         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 764         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 765         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 766         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 767         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 768         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 769
 770         ret = input_register_device(wdata->ir);
 771         if (ret) {
 772                 hid_err(wdata->hdev, "cannot register input device\n");
 773                 goto err_free;
 774         }
 775
 776         return 0;
 777
 778 err_free:
 779         input_free_device(wdata->ir);
 780         wdata->ir = NULL;
 781         return ret;
 782 }
 783
 784 static void wiimod_ir_remove(const struct wiimod_ops *ops,
 785                              struct wiimote_data *wdata)
 786 {
 787         if (!wdata->ir)
 788                 return;
 789
 790         input_unregister_device(wdata->ir);
 791         wdata->ir = NULL;
 792 }
 793
 794 static const struct wiimod_ops wiimod_ir = {
 795         .flags = 0,
 796         .arg = 0,
 797         .probe = wiimod_ir_probe,
 798         .remove = wiimod_ir_remove,
 799         .in_ir = wiimod_ir_in_ir,
 800 };
 801
 802 /*
 803  * Nunchuk Extension
 804  * The Nintendo Wii Nunchuk was the first official extension published by
 805  * Nintendo. It provides two additional keys and a separate accelerometer. It
 806  * can be hotplugged to standard Wii Remotes.
 807  */
 808
 809 enum wiimod_nunchuk_keys {
 810         WIIMOD_NUNCHUK_KEY_C,
 811         WIIMOD_NUNCHUK_KEY_Z,
 812         WIIMOD_NUNCHUK_KEY_NUM,
 813 };
 814
 815 static const __u16 wiimod_nunchuk_map[] = {
 816         BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 817         BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 818 };
 819
 820 static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 821 {
 822         __s16 x, y, z, bx, by;
 823
 824         /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 825          *   -----+----------+---------+---------+----+-----+
 826          *    1   |              Button X <7:0>             |
 827          *    2   |              Button Y <7:0>             |
 828          *   -----+----------+---------+---------+----+-----+
 829          *    3   |               Speed X <9:2>             |
 830          *    4   |               Speed Y <9:2>             |
 831          *    5   |               Speed Z <9:2>             |
 832          *   -----+----------+---------+---------+----+-----+
 833          *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 834          *   -----+----------+---------+---------+----+-----+
 835          * Button X/Y is the analog stick. Speed X, Y and Z are the
 836          * accelerometer data in the same format as the wiimote's accelerometer.
 837          * The 6th byte contains the LSBs of the accelerometer data.
 838          * BC and BZ are the C and Z buttons: 0 means pressed
 839          *
 840          * If reported interleaved with motionp, then the layout changes. The
 841          * 5th and 6th byte changes to:
 842          *   -----+-----------------------------------+-----+
 843          *    5   |            Speed Z <9:3>          | EXT |
 844          *   -----+--------+-----+-----+----+----+----+-----+
 845          *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 846          *   -----+--------+-----+-----+----+----+----+-----+
 847          * All three accelerometer values lose their LSB. The other data is
 848          * still available but slightly moved.
 849          *
 850          * Center data for button values is 128. Center value for accelerometer
 851          * values it 512 / 0x200
 852          */
 853
 854         bx = ext[0];
 855         by = ext[1];
 856         bx -= 128;
 857         by -= 128;
 858
 859         x = ext[2] << 2;
 860         y = ext[3] << 2;
 861         z = ext[4] << 2;
 862
 863         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 864                 x |= (ext[5] >> 3) & 0x02;
 865                 y |= (ext[5] >> 4) & 0x02;
 866                 z &= ~0x4;
 867                 z |= (ext[5] >> 5) & 0x06;
 868         } else {
 869                 x |= (ext[5] >> 2) & 0x03;
 870                 y |= (ext[5] >> 4) & 0x03;
 871                 z |= (ext[5] >> 6) & 0x03;
 872         }
 873
 874         x -= 0x200;
 875         y -= 0x200;
 876         z -= 0x200;
 877
 878         input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 879         input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 880
 881         input_report_abs(wdata->extension.input, ABS_RX, x);
 882         input_report_abs(wdata->extension.input, ABS_RY, y);
 883         input_report_abs(wdata->extension.input, ABS_RZ, z);
 884
 885         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 886                 input_report_key(wdata->extension.input,
 887                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 888                         !(ext[5] & 0x04));
 889                 input_report_key(wdata->extension.input,
 890                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 891                         !(ext[5] & 0x08));
 892         } else {
 893                 input_report_key(wdata->extension.input,
 894                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 895                         !(ext[5] & 0x01));
 896                 input_report_key(wdata->extension.input,
 897                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 898                         !(ext[5] & 0x02));
 899         }
 900
 901         input_sync(wdata->extension.input);
 902 }
 903
 904 static int wiimod_nunchuk_open(struct input_dev *dev)
 905 {
 906         struct wiimote_data *wdata = input_get_drvdata(dev);
 907         unsigned long flags;
 908
 909         spin_lock_irqsave(&wdata->state.lock, flags);
 910         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 911         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 912         spin_unlock_irqrestore(&wdata->state.lock, flags);
 913
 914         return 0;
 915 }
 916
 917 static void wiimod_nunchuk_close(struct input_dev *dev)
 918 {
 919         struct wiimote_data *wdata = input_get_drvdata(dev);
 920         unsigned long flags;
 921
 922         spin_lock_irqsave(&wdata->state.lock, flags);
 923         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 924         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 925         spin_unlock_irqrestore(&wdata->state.lock, flags);
 926 }
 927
 928 static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 929                                 struct wiimote_data *wdata)
 930 {
 931         int ret, i;
 932
 933         wdata->extension.input = input_allocate_device();
 934         if (!wdata->extension.input)
 935                 return -ENOMEM;
 936
 937         input_set_drvdata(wdata->extension.input, wdata);
 938         wdata->extension.input->open = wiimod_nunchuk_open;
 939         wdata->extension.input->close = wiimod_nunchuk_close;
 940         wdata->extension.input->dev.parent = &wdata->hdev->dev;
 941         wdata->extension.input->id.bustype = wdata->hdev->bus;
 942         wdata->extension.input->id.vendor = wdata->hdev->vendor;
 943         wdata->extension.input->id.product = wdata->hdev->product;
 944         wdata->extension.input->id.version = wdata->hdev->version;
 945         wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 946
 947         set_bit(EV_KEY, wdata->extension.input->evbit);
 948         for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 949                 set_bit(wiimod_nunchuk_map[i],
 950                         wdata->extension.input->keybit);
 951
 952         set_bit(EV_ABS, wdata->extension.input->evbit);
 953         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 954         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 955         input_set_abs_params(wdata->extension.input,
 956                              ABS_HAT0X, -120, 120, 2, 4);
 957         input_set_abs_params(wdata->extension.input,
 958                              ABS_HAT0Y, -120, 120, 2, 4);
 959         set_bit(ABS_RX, wdata->extension.input->absbit);
 960         set_bit(ABS_RY, wdata->extension.input->absbit);
 961         set_bit(ABS_RZ, wdata->extension.input->absbit);
 962         input_set_abs_params(wdata->extension.input,
 963                              ABS_RX, -500, 500, 2, 4);
 964         input_set_abs_params(wdata->extension.input,
 965                              ABS_RY, -500, 500, 2, 4);
 966         input_set_abs_params(wdata->extension.input,
 967                              ABS_RZ, -500, 500, 2, 4);
 968
 969         ret = input_register_device(wdata->extension.input);
 970         if (ret)
 971                 goto err_free;
 972
 973         return 0;
 974
 975 err_free:
 976         input_free_device(wdata->extension.input);
 977         wdata->extension.input = NULL;
 978         return ret;
 979 }
 980
 981 static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 982                                   struct wiimote_data *wdata)
 983 {
 984         if (!wdata->extension.input)
 985                 return;
 986
 987         input_unregister_device(wdata->extension.input);
 988         wdata->extension.input = NULL;
 989 }
 990
 991 static const struct wiimod_ops wiimod_nunchuk = {
 992         .flags = 0,
 993         .arg = 0,
 994         .probe = wiimod_nunchuk_probe,
 995         .remove = wiimod_nunchuk_remove,
 996         .in_ext = wiimod_nunchuk_in_ext,
 997 };
 998
 999 /*
1000  * Classic Controller
1001  * Another official extension from Nintendo. It provides a classic
1002  * gamecube-like controller that can be hotplugged on the Wii Remote.
1003  * It has several hardware buttons and switches that are all reported via
1004  * a normal extension device.
1005  */
1006
1007 enum wiimod_classic_keys {
1008         WIIMOD_CLASSIC_KEY_A,
1009         WIIMOD_CLASSIC_KEY_B,
1010         WIIMOD_CLASSIC_KEY_X,
1011         WIIMOD_CLASSIC_KEY_Y,
1012         WIIMOD_CLASSIC_KEY_ZL,
1013         WIIMOD_CLASSIC_KEY_ZR,
1014         WIIMOD_CLASSIC_KEY_PLUS,
1015         WIIMOD_CLASSIC_KEY_MINUS,
1016         WIIMOD_CLASSIC_KEY_HOME,
1017         WIIMOD_CLASSIC_KEY_LEFT,
1018         WIIMOD_CLASSIC_KEY_RIGHT,
1019         WIIMOD_CLASSIC_KEY_UP,
1020         WIIMOD_CLASSIC_KEY_DOWN,
1021         WIIMOD_CLASSIC_KEY_LT,
1022         WIIMOD_CLASSIC_KEY_RT,
1023         WIIMOD_CLASSIC_KEY_NUM,
1024 };
1025
1026 static const __u16 wiimod_classic_map[] = {
1027         BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1028         BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1029         BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1030         BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1031         BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1032         BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1033         KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1034         KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1035         BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1036         KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1037         KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1038         KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1039         KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1040         BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1041         BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1042 };
1043
1044 static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1045 {
1046         __s8 rx, ry, lx, ly, lt, rt;
1047
1048         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1049          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1050          *    1   | RX <5:4>  |              LX <5:0>             |
1051          *    2   | RX <3:2>  |              LY <5:0>             |
1052          *   -----+-----+-----+-----+-----------------------------+
1053          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1054          *   -----+-----+-----------+-----------------------------+
1055          *    4   |     LT <3:1>    |         RT <5:1>            |
1056          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1057          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1058          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1059          *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1060          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1061          * All buttons are 0 if pressed
1062          * RX and RY are right analog stick
1063          * LX and LY are left analog stick
1064          * LT is left trigger, RT is right trigger
1065          * BLT is 0 if left trigger is fully pressed
1066          * BRT is 0 if right trigger is fully pressed
1067          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1068          * BZL is left Z button and BZR is right Z button
1069          * B-, BH, B+ are +, HOME and - buttons
1070          * BB, BY, BA, BX are A, B, X, Y buttons
1071          * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1072          *
1073          * With motionp enabled it changes slightly to this:
1074          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1075          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1076          *    1   | RX <5:4>  |          LX <5:1>           | BDU |
1077          *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1078          *   -----+-----+-----+-----+-----------------------+-----+
1079          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1080          *   -----+-----+-----------+-----------------------------+
1081          *    4   |     LT <3:1>    |         RT <5:1>            |
1082          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1083          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1084          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1085          *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1086          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1087          * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1088          * is the same as before.
1089          */
1090
1091         static const s8 digital_to_analog[3] = {0x20, 0, -0x20};
1092
1093         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1094                 if (wiimote_dpad_as_analog) {
1095                         lx = digital_to_analog[1 - !(ext[4] & 0x80)
1096                                 + !(ext[1] & 0x01)];
1097                         ly = digital_to_analog[1 - !(ext[4] & 0x40)
1098                                 + !(ext[0] & 0x01)];
1099                 } else {
1100                         lx = (ext[0] & 0x3e) - 0x20;
1101                         ly = (ext[1] & 0x3e) - 0x20;
1102                 }
1103         } else {
1104                 if (wiimote_dpad_as_analog) {
1105                         lx = digital_to_analog[1 - !(ext[4] & 0x80)
1106                                 + !(ext[5] & 0x02)];
1107                         ly = digital_to_analog[1 - !(ext[4] & 0x40)
1108                                 + !(ext[5] & 0x01)];
1109                 } else {
1110                         lx = (ext[0] & 0x3f) - 0x20;
1111                         ly = (ext[1] & 0x3f) - 0x20;
1112                 }
1113         }
1114
1115         rx = (ext[0] >> 3) & 0x18;
1116         rx |= (ext[1] >> 5) & 0x06;
1117         rx |= (ext[2] >> 7) & 0x01;
1118         ry = ext[2] & 0x1f;
1119
1120         rt = ext[3] & 0x1f;
1121         lt = (ext[2] >> 2) & 0x18;
1122         lt |= (ext[3] >> 5) & 0x07;
1123
1124         rx <<= 1;
1125         ry <<= 1;
1126         rt <<= 1;
1127         lt <<= 1;
1128
1129         input_report_abs(wdata->extension.input, ABS_HAT1X, lx);
1130         input_report_abs(wdata->extension.input, ABS_HAT1Y, ly);
1131         input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1132         input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1133         input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
1134         input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1135
1136         input_report_key(wdata->extension.input,
1137                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1138                          !(ext[4] & 0x20));
1139         input_report_key(wdata->extension.input,
1140                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1141                          !(ext[4] & 0x10));
1142         input_report_key(wdata->extension.input,
1143                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1144                          !(ext[4] & 0x08));
1145         input_report_key(wdata->extension.input,
1146                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1147                          !(ext[4] & 0x04));
1148         input_report_key(wdata->extension.input,
1149                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1150                          !(ext[4] & 0x02));
1151         input_report_key(wdata->extension.input,
1152                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1153                          !(ext[5] & 0x80));
1154         input_report_key(wdata->extension.input,
1155                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1156                          !(ext[5] & 0x40));
1157         input_report_key(wdata->extension.input,
1158                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1159                          !(ext[5] & 0x20));
1160         input_report_key(wdata->extension.input,
1161                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1162                          !(ext[5] & 0x10));
1163         input_report_key(wdata->extension.input,
1164                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1165                          !(ext[5] & 0x08));
1166         input_report_key(wdata->extension.input,
1167                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1168                          !(ext[5] & 0x04));
1169
1170         if (!wiimote_dpad_as_analog) {
1171                 input_report_key(wdata->extension.input,
1172                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1173                                  !(ext[4] & 0x80));
1174                 input_report_key(wdata->extension.input,
1175                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1176                                  !(ext[4] & 0x40));
1177
1178                 if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1179                         input_report_key(wdata->extension.input,
1180                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1181                                  !(ext[1] & 0x01));
1182                         input_report_key(wdata->extension.input,
1183                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1184                                  !(ext[0] & 0x01));
1185                 } else {
1186                         input_report_key(wdata->extension.input,
1187                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1188                                  !(ext[5] & 0x02));
1189                         input_report_key(wdata->extension.input,
1190                                  wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1191                                  !(ext[5] & 0x01));
1192                 }
1193         }
1194
1195         input_sync(wdata->extension.input);
1196 }
1197
1198 static int wiimod_classic_open(struct input_dev *dev)
1199 {
1200         struct wiimote_data *wdata = input_get_drvdata(dev);
1201         unsigned long flags;
1202
1203         spin_lock_irqsave(&wdata->state.lock, flags);
1204         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1205         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1206         spin_unlock_irqrestore(&wdata->state.lock, flags);
1207
1208         return 0;
1209 }
1210
1211 static void wiimod_classic_close(struct input_dev *dev)
1212 {
1213         struct wiimote_data *wdata = input_get_drvdata(dev);
1214         unsigned long flags;
1215
1216         spin_lock_irqsave(&wdata->state.lock, flags);
1217         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1218         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1219         spin_unlock_irqrestore(&wdata->state.lock, flags);
1220 }
1221
1222 static int wiimod_classic_probe(const struct wiimod_ops *ops,
1223                                 struct wiimote_data *wdata)
1224 {
1225         int ret, i;
1226
1227         wdata->extension.input = input_allocate_device();
1228         if (!wdata->extension.input)
1229                 return -ENOMEM;
1230
1231         input_set_drvdata(wdata->extension.input, wdata);
1232         wdata->extension.input->open = wiimod_classic_open;
1233         wdata->extension.input->close = wiimod_classic_close;
1234         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1235         wdata->extension.input->id.bustype = wdata->hdev->bus;
1236         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1237         wdata->extension.input->id.product = wdata->hdev->product;
1238         wdata->extension.input->id.version = wdata->hdev->version;
1239         wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1240
1241         set_bit(EV_KEY, wdata->extension.input->evbit);
1242         for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1243                 set_bit(wiimod_classic_map[i],
1244                         wdata->extension.input->keybit);
1245
1246         set_bit(EV_ABS, wdata->extension.input->evbit);
1247         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1248         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1249         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1250         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1251         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1252         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1253         input_set_abs_params(wdata->extension.input,
1254                              ABS_HAT1X, -30, 30, 1, 1);
1255         input_set_abs_params(wdata->extension.input,
1256                              ABS_HAT1Y, -30, 30, 1, 1);
1257         input_set_abs_params(wdata->extension.input,
1258                              ABS_HAT2X, -30, 30, 1, 1);
1259         input_set_abs_params(wdata->extension.input,
1260                              ABS_HAT2Y, -30, 30, 1, 1);
1261         input_set_abs_params(wdata->extension.input,
1262                              ABS_HAT3X, -30, 30, 1, 1);
1263         input_set_abs_params(wdata->extension.input,
1264                              ABS_HAT3Y, -30, 30, 1, 1);
1265
1266         ret = input_register_device(wdata->extension.input);
1267         if (ret)
1268                 goto err_free;
1269
1270         return 0;
1271
1272 err_free:
1273         input_free_device(wdata->extension.input);
1274         wdata->extension.input = NULL;
1275         return ret;
1276 }
1277
1278 static void wiimod_classic_remove(const struct wiimod_ops *ops,
1279                                   struct wiimote_data *wdata)
1280 {
1281         if (!wdata->extension.input)
1282                 return;
1283
1284         input_unregister_device(wdata->extension.input);
1285         wdata->extension.input = NULL;
1286 }
1287
1288 static const struct wiimod_ops wiimod_classic = {
1289         .flags = 0,
1290         .arg = 0,
1291         .probe = wiimod_classic_probe,
1292         .remove = wiimod_classic_remove,
1293         .in_ext = wiimod_classic_in_ext,
1294 };
1295
1296 /*
1297  * Balance Board Extension
1298  * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1299  * single push button. No other peripherals are available. However, the
1300  * balance-board data is sent via a standard Wii Remote extension. All other
1301  * data for non-present hardware is zeroed out.
1302  * Some 3rd party devices react allergic if we try to access normal Wii Remote
1303  * hardware, so this extension module should be the only module that is loaded
1304  * on balance boards.
1305  * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1306  * it needs the WIIMOD_FLAG_EXT8 flag.
1307  */
1308
1309 static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1310 {
1311         input_report_key(wdata->extension.input, BTN_A,
1312                          !!(keys[1] & 0x08));
1313         input_sync(wdata->extension.input);
1314 }
1315
1316 static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1317                                  const __u8 *ext)
1318 {
1319         __s32 val[4], tmp, div;
1320         unsigned int i;
1321         struct wiimote_state *s = &wdata->state;
1322
1323         /*
1324          * Balance board data layout:
1325          *
1326          *   Byte |  8  7  6  5  4  3  2  1  |
1327          *   -----+--------------------------+
1328          *    1   |    Top Right <15:8>      |
1329          *    2   |    Top Right  <7:0>      |
1330          *   -----+--------------------------+
1331          *    3   | Bottom Right <15:8>      |
1332          *    4   | Bottom Right  <7:0>      |
1333          *   -----+--------------------------+
1334          *    5   |     Top Left <15:8>      |
1335          *    6   |     Top Left  <7:0>      |
1336          *   -----+--------------------------+
1337          *    7   |  Bottom Left <15:8>      |
1338          *    8   |  Bottom Left  <7:0>      |
1339          *   -----+--------------------------+
1340          *
1341          * These values represent the weight-measurements of the Wii-balance
1342          * board with 16bit precision.
1343          *
1344          * The balance-board is never reported interleaved with motionp.
1345          */
1346
1347         val[0] = ext[0];
1348         val[0] <<= 8;
1349         val[0] |= ext[1];
1350
1351         val[1] = ext[2];
1352         val[1] <<= 8;
1353         val[1] |= ext[3];
1354
1355         val[2] = ext[4];
1356         val[2] <<= 8;
1357         val[2] |= ext[5];
1358
1359         val[3] = ext[6];
1360         val[3] <<= 8;
1361         val[3] |= ext[7];
1362
1363         /* apply calibration data */
1364         for (i = 0; i < 4; i++) {
1365                 if (val[i] <= s->calib_bboard[i][0]) {
1366                         tmp = 0;
1367                 } else if (val[i] < s->calib_bboard[i][1]) {
1368                         tmp = val[i] - s->calib_bboard[i][0];
1369                         tmp *= 1700;
1370                         div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1371                         tmp /= div ? div : 1;
1372                 } else {
1373                         tmp = val[i] - s->calib_bboard[i][1];
1374                         tmp *= 1700;
1375                         div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1376                         tmp /= div ? div : 1;
1377                         tmp += 1700;
1378                 }
1379                 val[i] = tmp;
1380         }
1381
1382         input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1383         input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1384         input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1385         input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1386         input_sync(wdata->extension.input);
1387 }
1388
1389 static int wiimod_bboard_open(struct input_dev *dev)
1390 {
1391         struct wiimote_data *wdata = input_get_drvdata(dev);
1392         unsigned long flags;
1393
1394         spin_lock_irqsave(&wdata->state.lock, flags);
1395         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1396         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1397         spin_unlock_irqrestore(&wdata->state.lock, flags);
1398
1399         return 0;
1400 }
1401
1402 static void wiimod_bboard_close(struct input_dev *dev)
1403 {
1404         struct wiimote_data *wdata = input_get_drvdata(dev);
1405         unsigned long flags;
1406
1407         spin_lock_irqsave(&wdata->state.lock, flags);
1408         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1409         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1410         spin_unlock_irqrestore(&wdata->state.lock, flags);
1411 }
1412
1413 static ssize_t wiimod_bboard_calib_show(struct device *dev,
1414                                         struct device_attribute *attr,
1415                                         char *out)
1416 {
1417         struct wiimote_data *wdata = dev_to_wii(dev);
1418         int i, j, ret;
1419         __u16 val;
1420         __u8 buf[24], offs;
1421
1422         ret = wiimote_cmd_acquire(wdata);
1423         if (ret)
1424                 return ret;
1425
1426         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1427         if (ret != 12) {
1428                 wiimote_cmd_release(wdata);
1429                 return ret < 0 ? ret : -EIO;
1430         }
1431         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1432         if (ret != 12) {
1433                 wiimote_cmd_release(wdata);
1434                 return ret < 0 ? ret : -EIO;
1435         }
1436
1437         wiimote_cmd_release(wdata);
1438
1439         spin_lock_irq(&wdata->state.lock);
1440         offs = 0;
1441         for (i = 0; i < 3; ++i) {
1442                 for (j = 0; j < 4; ++j) {
1443                         wdata->state.calib_bboard[j][i] = buf[offs];
1444                         wdata->state.calib_bboard[j][i] <<= 8;
1445                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1446                         offs += 2;
1447                 }
1448         }
1449         spin_unlock_irq(&wdata->state.lock);
1450
1451         ret = 0;
1452         for (i = 0; i < 3; ++i) {
1453                 for (j = 0; j < 4; ++j) {
1454                         val = wdata->state.calib_bboard[j][i];
1455                         if (i == 2 && j == 3)
1456                                 ret += sprintf(&out[ret], "%04x\n", val);
1457                         else
1458                                 ret += sprintf(&out[ret], "%04x:", val);
1459                 }
1460         }
1461
1462         return ret;
1463 }
1464
1465 static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1466
1467 static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1468                                struct wiimote_data *wdata)
1469 {
1470         int ret, i, j;
1471         __u8 buf[24], offs;
1472
1473         wiimote_cmd_acquire_noint(wdata);
1474
1475         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1476         if (ret != 12) {
1477                 wiimote_cmd_release(wdata);
1478                 return ret < 0 ? ret : -EIO;
1479         }
1480         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1481         if (ret != 12) {
1482                 wiimote_cmd_release(wdata);
1483                 return ret < 0 ? ret : -EIO;
1484         }
1485
1486         wiimote_cmd_release(wdata);
1487
1488         offs = 0;
1489         for (i = 0; i < 3; ++i) {
1490                 for (j = 0; j < 4; ++j) {
1491                         wdata->state.calib_bboard[j][i] = buf[offs];
1492                         wdata->state.calib_bboard[j][i] <<= 8;
1493                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1494                         offs += 2;
1495                 }
1496         }
1497
1498         wdata->extension.input = input_allocate_device();
1499         if (!wdata->extension.input)
1500                 return -ENOMEM;
1501
1502         ret = device_create_file(&wdata->hdev->dev,
1503                                  &dev_attr_bboard_calib);
1504         if (ret) {
1505                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1506                 goto err_free;
1507         }
1508
1509         input_set_drvdata(wdata->extension.input, wdata);
1510         wdata->extension.input->open = wiimod_bboard_open;
1511         wdata->extension.input->close = wiimod_bboard_close;
1512         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1513         wdata->extension.input->id.bustype = wdata->hdev->bus;
1514         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1515         wdata->extension.input->id.product = wdata->hdev->product;
1516         wdata->extension.input->id.version = wdata->hdev->version;
1517         wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1518
1519         set_bit(EV_KEY, wdata->extension.input->evbit);
1520         set_bit(BTN_A, wdata->extension.input->keybit);
1521
1522         set_bit(EV_ABS, wdata->extension.input->evbit);
1523         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1524         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1525         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1526         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1527         input_set_abs_params(wdata->extension.input,
1528                              ABS_HAT0X, 0, 65535, 2, 4);
1529         input_set_abs_params(wdata->extension.input,
1530                              ABS_HAT0Y, 0, 65535, 2, 4);
1531         input_set_abs_params(wdata->extension.input,
1532                              ABS_HAT1X, 0, 65535, 2, 4);
1533         input_set_abs_params(wdata->extension.input,
1534                              ABS_HAT1Y, 0, 65535, 2, 4);
1535
1536         ret = input_register_device(wdata->extension.input);
1537         if (ret)
1538                 goto err_file;
1539
1540         return 0;
1541
1542 err_file:
1543         device_remove_file(&wdata->hdev->dev,
1544                            &dev_attr_bboard_calib);
1545 err_free:
1546         input_free_device(wdata->extension.input);
1547         wdata->extension.input = NULL;
1548         return ret;
1549 }
1550
1551 static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1552                                  struct wiimote_data *wdata)
1553 {
1554         if (!wdata->extension.input)
1555                 return;
1556
1557         input_unregister_device(wdata->extension.input);
1558         wdata->extension.input = NULL;
1559         device_remove_file(&wdata->hdev->dev,
1560                            &dev_attr_bboard_calib);
1561 }
1562
1563 static const struct wiimod_ops wiimod_bboard = {
1564         .flags = WIIMOD_FLAG_EXT8,
1565         .arg = 0,
1566         .probe = wiimod_bboard_probe,
1567         .remove = wiimod_bboard_remove,
1568         .in_keys = wiimod_bboard_in_keys,
1569         .in_ext = wiimod_bboard_in_ext,
1570 };
1571
1572 /*
1573  * Pro Controller
1574  * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1575  * work together with the classic Wii, but only with the new Wii U. However, it
1576  * uses the same protocol and provides a builtin "classic controller pro"
1577  * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1578  * We provide all these via a standard extension device as the device doesn't
1579  * feature an extension port.
1580  */
1581
1582 enum wiimod_pro_keys {
1583         WIIMOD_PRO_KEY_A,
1584         WIIMOD_PRO_KEY_B,
1585         WIIMOD_PRO_KEY_X,
1586         WIIMOD_PRO_KEY_Y,
1587         WIIMOD_PRO_KEY_PLUS,
1588         WIIMOD_PRO_KEY_MINUS,
1589         WIIMOD_PRO_KEY_HOME,
1590         WIIMOD_PRO_KEY_LEFT,
1591         WIIMOD_PRO_KEY_RIGHT,
1592         WIIMOD_PRO_KEY_UP,
1593         WIIMOD_PRO_KEY_DOWN,
1594         WIIMOD_PRO_KEY_TL,
1595         WIIMOD_PRO_KEY_TR,
1596         WIIMOD_PRO_KEY_ZL,
1597         WIIMOD_PRO_KEY_ZR,
1598         WIIMOD_PRO_KEY_THUMBL,
1599         WIIMOD_PRO_KEY_THUMBR,
1600         WIIMOD_PRO_KEY_NUM,
1601 };
1602
1603 static const __u16 wiimod_pro_map[] = {
1604         BTN_EAST,       /* WIIMOD_PRO_KEY_A */
1605         BTN_SOUTH,      /* WIIMOD_PRO_KEY_B */
1606         BTN_NORTH,      /* WIIMOD_PRO_KEY_X */
1607         BTN_WEST,       /* WIIMOD_PRO_KEY_Y */
1608         BTN_START,      /* WIIMOD_PRO_KEY_PLUS */
1609         BTN_SELECT,     /* WIIMOD_PRO_KEY_MINUS */
1610         BTN_MODE,       /* WIIMOD_PRO_KEY_HOME */
1611         BTN_DPAD_LEFT,  /* WIIMOD_PRO_KEY_LEFT */
1612         BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1613         BTN_DPAD_UP,    /* WIIMOD_PRO_KEY_UP */
1614         BTN_DPAD_DOWN,  /* WIIMOD_PRO_KEY_DOWN */
1615         BTN_TL,         /* WIIMOD_PRO_KEY_TL */
1616         BTN_TR,         /* WIIMOD_PRO_KEY_TR */
1617         BTN_TL2,        /* WIIMOD_PRO_KEY_ZL */
1618         BTN_TR2,        /* WIIMOD_PRO_KEY_ZR */
1619         BTN_THUMBL,     /* WIIMOD_PRO_KEY_THUMBL */
1620         BTN_THUMBR,     /* WIIMOD_PRO_KEY_THUMBR */
1621 };
1622
1623 static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1624 {
1625         __s16 rx, ry, lx, ly;
1626
1627         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1628          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1629          *    1   |                   LX <7:0>                    |
1630          *   -----+-----------------------+-----------------------+
1631          *    2   |  0     0     0     0  |       LX <11:8>       |
1632          *   -----+-----------------------+-----------------------+
1633          *    3   |                   RX <7:0>                    |
1634          *   -----+-----------------------+-----------------------+
1635          *    4   |  0     0     0     0  |       RX <11:8>       |
1636          *   -----+-----------------------+-----------------------+
1637          *    5   |                   LY <7:0>                    |
1638          *   -----+-----------------------+-----------------------+
1639          *    6   |  0     0     0     0  |       LY <11:8>       |
1640          *   -----+-----------------------+-----------------------+
1641          *    7   |                   RY <7:0>                    |
1642          *   -----+-----------------------+-----------------------+
1643          *    8   |  0     0     0     0  |       RY <11:8>       |
1644          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1645          *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1646          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1647          *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1648          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1649          *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
1650          *   -----+-----+-----------------+-----------+-----+-----+
1651          * All buttons are low-active (0 if pressed)
1652          * RX and RY are right analog stick
1653          * LX and LY are left analog stick
1654          * BLT is left trigger, BRT is right trigger.
1655          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1656          * BZL is left Z button and BZR is right Z button
1657          * B-, BH, B+ are +, HOME and - buttons
1658          * BB, BY, BA, BX are A, B, X, Y buttons
1659          *
1660          * Bits marked as 0/1 are unknown and never changed during tests.
1661          *
1662          * Not entirely verified:
1663          *   CHARG: 1 if uncharging, 0 if charging
1664          *   USB: 1 if not connected, 0 if connected
1665          *   BATTERY: battery capacity from 000 (empty) to 100 (full)
1666          */
1667
1668         lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1669         rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1670         ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1671         ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1672
1673         /* zero-point offsets */
1674         lx -= 0x800;
1675         ly = 0x800 - ly;
1676         rx -= 0x800;
1677         ry = 0x800 - ry;
1678
1679         /* Trivial automatic calibration. We don't know any calibration data
1680          * in the EEPROM so we must use the first report to calibrate the
1681          * null-position of the analog sticks. Users can retrigger calibration
1682          * via sysfs, or set it explicitly. If data is off more than abs(500),
1683          * we skip calibration as the sticks are likely to be moved already. */
1684         if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1685                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1686                 if (abs(lx) < 500)
1687                         wdata->state.calib_pro_sticks[0] = -lx;
1688                 if (abs(ly) < 500)
1689                         wdata->state.calib_pro_sticks[1] = -ly;
1690                 if (abs(rx) < 500)
1691                         wdata->state.calib_pro_sticks[2] = -rx;
1692                 if (abs(ry) < 500)
1693                         wdata->state.calib_pro_sticks[3] = -ry;
1694         }
1695
1696         /* apply calibration data */
1697         lx += wdata->state.calib_pro_sticks[0];
1698         ly += wdata->state.calib_pro_sticks[1];
1699         rx += wdata->state.calib_pro_sticks[2];
1700         ry += wdata->state.calib_pro_sticks[3];
1701
1702         input_report_abs(wdata->extension.input, ABS_X, lx);
1703         input_report_abs(wdata->extension.input, ABS_Y, ly);
1704         input_report_abs(wdata->extension.input, ABS_RX, rx);
1705         input_report_abs(wdata->extension.input, ABS_RY, ry);
1706
1707         input_report_key(wdata->extension.input,
1708                          wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1709                          !(ext[8] & 0x80));
1710         input_report_key(wdata->extension.input,
1711                          wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1712                          !(ext[8] & 0x40));
1713         input_report_key(wdata->extension.input,
1714                          wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1715                          !(ext[8] & 0x20));
1716         input_report_key(wdata->extension.input,
1717                          wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1718                          !(ext[8] & 0x10));
1719         input_report_key(wdata->extension.input,
1720                          wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1721                          !(ext[8] & 0x08));
1722         input_report_key(wdata->extension.input,
1723                          wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1724                          !(ext[8] & 0x04));
1725         input_report_key(wdata->extension.input,
1726                          wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1727                          !(ext[8] & 0x02));
1728
1729         input_report_key(wdata->extension.input,
1730                          wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1731                          !(ext[9] & 0x80));
1732         input_report_key(wdata->extension.input,
1733                          wiimod_pro_map[WIIMOD_PRO_KEY_B],
1734                          !(ext[9] & 0x40));
1735         input_report_key(wdata->extension.input,
1736                          wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1737                          !(ext[9] & 0x20));
1738         input_report_key(wdata->extension.input,
1739                          wiimod_pro_map[WIIMOD_PRO_KEY_A],
1740                          !(ext[9] & 0x10));
1741         input_report_key(wdata->extension.input,
1742                          wiimod_pro_map[WIIMOD_PRO_KEY_X],
1743                          !(ext[9] & 0x08));
1744         input_report_key(wdata->extension.input,
1745                          wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1746                          !(ext[9] & 0x04));
1747         input_report_key(wdata->extension.input,
1748                          wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1749                          !(ext[9] & 0x02));
1750         input_report_key(wdata->extension.input,
1751                          wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1752                          !(ext[9] & 0x01));
1753
1754         input_report_key(wdata->extension.input,
1755                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1756                          !(ext[10] & 0x02));
1757         input_report_key(wdata->extension.input,
1758                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1759                          !(ext[10] & 0x01));
1760
1761         input_sync(wdata->extension.input);
1762 }
1763
1764 static int wiimod_pro_open(struct input_dev *dev)
1765 {
1766         struct wiimote_data *wdata = input_get_drvdata(dev);
1767         unsigned long flags;
1768
1769         spin_lock_irqsave(&wdata->state.lock, flags);
1770         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1771         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1772         spin_unlock_irqrestore(&wdata->state.lock, flags);
1773
1774         return 0;
1775 }
1776
1777 static void wiimod_pro_close(struct input_dev *dev)
1778 {
1779         struct wiimote_data *wdata = input_get_drvdata(dev);
1780         unsigned long flags;
1781
1782         spin_lock_irqsave(&wdata->state.lock, flags);
1783         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1784         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1785         spin_unlock_irqrestore(&wdata->state.lock, flags);
1786 }
1787
1788 static int wiimod_pro_play(struct input_dev *dev, void *data,
1789                            struct ff_effect *eff)
1790 {
1791         struct wiimote_data *wdata = input_get_drvdata(dev);
1792         __u8 value;
1793
1794         /*
1795          * The wiimote supports only a single rumble motor so if any magnitude
1796          * is set to non-zero then we start the rumble motor. If both are set to
1797          * zero, we stop the rumble motor.
1798          */
1799
1800         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1801                 value = 1;
1802         else
1803                 value = 0;
1804
1805         /* Locking state.lock here might deadlock with input_event() calls.
1806          * schedule_work acts as barrier. Merging multiple changes is fine. */
1807         wdata->state.cache_rumble = value;
1808         schedule_work(&wdata->rumble_worker);
1809
1810         return 0;
1811 }
1812
1813 static ssize_t wiimod_pro_calib_show(struct device *dev,
1814                                      struct device_attribute *attr,
1815                                      char *out)
1816 {
1817         struct wiimote_data *wdata = dev_to_wii(dev);
1818         int r;
1819
1820         r = 0;
1821         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
1822         r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
1823         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
1824         r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1825
1826         return r;
1827 }
1828
1829 static ssize_t wiimod_pro_calib_store(struct device *dev,
1830                                       struct device_attribute *attr,
1831                                       const char *buf, size_t count)
1832 {
1833         struct wiimote_data *wdata = dev_to_wii(dev);
1834         int r;
1835         s16 x1, y1, x2, y2;
1836
1837         if (!strncmp(buf, "scan\n", 5)) {
1838                 spin_lock_irq(&wdata->state.lock);
1839                 wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1840                 spin_unlock_irq(&wdata->state.lock);
1841         } else {
1842                 r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1843                 if (r != 4)
1844                         return -EINVAL;
1845
1846                 spin_lock_irq(&wdata->state.lock);
1847                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1848                 spin_unlock_irq(&wdata->state.lock);
1849
1850                 wdata->state.calib_pro_sticks[0] = x1;
1851                 wdata->state.calib_pro_sticks[1] = y1;
1852                 wdata->state.calib_pro_sticks[2] = x2;
1853                 wdata->state.calib_pro_sticks[3] = y2;
1854         }
1855
1856         return strnlen(buf, PAGE_SIZE);
1857 }
1858
1859 static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1860                    wiimod_pro_calib_store);
1861
1862 static int wiimod_pro_probe(const struct wiimod_ops *ops,
1863                             struct wiimote_data *wdata)
1864 {
1865         int ret, i;
1866         unsigned long flags;
1867
1868         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1869         wdata->state.calib_pro_sticks[0] = 0;
1870         wdata->state.calib_pro_sticks[1] = 0;
1871         wdata->state.calib_pro_sticks[2] = 0;
1872         wdata->state.calib_pro_sticks[3] = 0;
1873
1874         spin_lock_irqsave(&wdata->state.lock, flags);
1875         wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1876         spin_unlock_irqrestore(&wdata->state.lock, flags);
1877
1878         wdata->extension.input = input_allocate_device();
1879         if (!wdata->extension.input)
1880                 return -ENOMEM;
1881
1882         set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
1883         input_set_drvdata(wdata->extension.input, wdata);
1884
1885         if (input_ff_create_memless(wdata->extension.input, NULL,
1886                                     wiimod_pro_play)) {
1887                 ret = -ENOMEM;
1888                 goto err_free;
1889         }
1890
1891         ret = device_create_file(&wdata->hdev->dev,
1892                                  &dev_attr_pro_calib);
1893         if (ret) {
1894                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1895                 goto err_free;
1896         }
1897
1898         wdata->extension.input->open = wiimod_pro_open;
1899         wdata->extension.input->close = wiimod_pro_close;
1900         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1901         wdata->extension.input->id.bustype = wdata->hdev->bus;
1902         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1903         wdata->extension.input->id.product = wdata->hdev->product;
1904         wdata->extension.input->id.version = wdata->hdev->version;
1905         wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1906
1907         set_bit(EV_KEY, wdata->extension.input->evbit);
1908         for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1909                 set_bit(wiimod_pro_map[i],
1910                         wdata->extension.input->keybit);
1911
1912         set_bit(EV_ABS, wdata->extension.input->evbit);
1913         set_bit(ABS_X, wdata->extension.input->absbit);
1914         set_bit(ABS_Y, wdata->extension.input->absbit);
1915         set_bit(ABS_RX, wdata->extension.input->absbit);
1916         set_bit(ABS_RY, wdata->extension.input->absbit);
1917         input_set_abs_params(wdata->extension.input,
1918                              ABS_X, -0x400, 0x400, 4, 100);
1919         input_set_abs_params(wdata->extension.input,
1920                              ABS_Y, -0x400, 0x400, 4, 100);
1921         input_set_abs_params(wdata->extension.input,
1922                              ABS_RX, -0x400, 0x400, 4, 100);
1923         input_set_abs_params(wdata->extension.input,
1924                              ABS_RY, -0x400, 0x400, 4, 100);
1925
1926         ret = input_register_device(wdata->extension.input);
1927         if (ret)
1928                 goto err_file;
1929
1930         return 0;
1931
1932 err_file:
1933         device_remove_file(&wdata->hdev->dev,
1934                            &dev_attr_pro_calib);
1935 err_free:
1936         input_free_device(wdata->extension.input);
1937         wdata->extension.input = NULL;
1938         return ret;
1939 }
1940
1941 static void wiimod_pro_remove(const struct wiimod_ops *ops,
1942                               struct wiimote_data *wdata)
1943 {
1944         unsigned long flags;
1945
1946         if (!wdata->extension.input)
1947                 return;
1948
1949         input_unregister_device(wdata->extension.input);
1950         wdata->extension.input = NULL;
1951         cancel_work_sync(&wdata->rumble_worker);
1952         device_remove_file(&wdata->hdev->dev,
1953                            &dev_attr_pro_calib);
1954
1955         spin_lock_irqsave(&wdata->state.lock, flags);
1956         wiiproto_req_rumble(wdata, 0);
1957         spin_unlock_irqrestore(&wdata->state.lock, flags);
1958 }
1959
1960 static const struct wiimod_ops wiimod_pro = {
1961         .flags = WIIMOD_FLAG_EXT16,
1962         .arg = 0,
1963         .probe = wiimod_pro_probe,
1964         .remove = wiimod_pro_remove,
1965         .in_ext = wiimod_pro_in_ext,
1966 };
1967
1968 /*
1969  * Drums
1970  * Guitar-Hero, Rock-Band and other games came bundled with drums which can
1971  * be plugged as extension to a Wiimote. Drum-reports are still not entirely
1972  * figured out, but the most important information is known.
1973  * We create a separate device for drums and report all information via this
1974  * input device.
1975  */
1976
1977 static inline void wiimod_drums_report_pressure(struct wiimote_data *wdata,
1978                                                 __u8 none, __u8 which,
1979                                                 __u8 pressure, __u8 onoff,
1980                                                 __u8 *store, __u16 code,
1981                                                 __u8 which_code)
1982 {
1983         static const __u8 default_pressure = 3;
1984
1985         if (!none && which == which_code) {
1986                 *store = pressure;
1987                 input_report_abs(wdata->extension.input, code, *store);
1988         } else if (onoff != !!*store) {
1989                 *store = onoff ? default_pressure : 0;
1990                 input_report_abs(wdata->extension.input, code, *store);
1991         }
1992 }
1993
1994 static void wiimod_drums_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1995 {
1996         __u8 pressure, which, none, hhp, sx, sy;
1997         __u8 o, r, y, g, b, bass, bm, bp;
1998
1999         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2000          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2001          *    1   |  0  |  0  |              SX <5:0>             |
2002          *    2   |  0  |  0  |              SY <5:0>             |
2003          *   -----+-----+-----+-----------------------------+-----+
2004          *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
2005          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2006          *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
2007          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2008          *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |  ?  |
2009          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2010          *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |  1  |  1  |
2011          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2012          * All buttons are 0 if pressed
2013          *
2014          * With Motion+ enabled, the following bits will get invalid:
2015          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2016          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2017          *    1   |  0  |  0  |              SX <5:1>       |XXXXX|
2018          *    2   |  0  |  0  |              SY <5:1>       |XXXXX|
2019          *   -----+-----+-----+-----------------------------+-----+
2020          *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
2021          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2022          *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
2023          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2024          *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |XXXXX|
2025          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2026          *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |XXXXX|XXXXX|
2027          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2028          */
2029
2030         pressure = 7 - (ext[3] >> 5);
2031         which = (ext[2] >> 1) & 0x1f;
2032         none = !!(ext[2] & 0x40);
2033         hhp = !(ext[2] & 0x80);
2034         sx = ext[0] & 0x3f;
2035         sy = ext[1] & 0x3f;
2036         o = !(ext[5] & 0x80);
2037         r = !(ext[5] & 0x40);
2038         y = !(ext[5] & 0x20);
2039         g = !(ext[5] & 0x10);
2040         b = !(ext[5] & 0x08);
2041         bass = !(ext[5] & 0x04);
2042         bm = !(ext[4] & 0x10);
2043         bp = !(ext[4] & 0x04);
2044
2045         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2046                 sx &= 0x3e;
2047                 sy &= 0x3e;
2048         }
2049
2050         wiimod_drums_report_pressure(wdata, none, which, pressure,
2051                                      o, &wdata->state.pressure_drums[0],
2052                                      ABS_HAT2Y, 0x0e);
2053         wiimod_drums_report_pressure(wdata, none, which, pressure,
2054                                      r, &wdata->state.pressure_drums[1],
2055                                      ABS_HAT0X, 0x19);
2056         wiimod_drums_report_pressure(wdata, none, which, pressure,
2057                                      y, &wdata->state.pressure_drums[2],
2058                                      ABS_HAT2X, 0x11);
2059         wiimod_drums_report_pressure(wdata, none, which, pressure,
2060                                      g, &wdata->state.pressure_drums[3],
2061                                      ABS_HAT1X, 0x12);
2062         wiimod_drums_report_pressure(wdata, none, which, pressure,
2063                                      b, &wdata->state.pressure_drums[4],
2064                                      ABS_HAT0Y, 0x0f);
2065
2066         /* Bass shares pressure with hi-hat (set via hhp) */
2067         wiimod_drums_report_pressure(wdata, none, hhp ? 0xff : which, pressure,
2068                                      bass, &wdata->state.pressure_drums[5],
2069                                      ABS_HAT3X, 0x1b);
2070         /* Hi-hat has no on/off values, just pressure. Force to off/0. */
2071         wiimod_drums_report_pressure(wdata, none, hhp ? which : 0xff, pressure,
2072                                      0, &wdata->state.pressure_drums[6],
2073                                      ABS_HAT3Y, 0x0e);
2074
2075         input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
2076         input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);
2077
2078         input_report_key(wdata->extension.input, BTN_START, bp);
2079         input_report_key(wdata->extension.input, BTN_SELECT, bm);
2080
2081         input_sync(wdata->extension.input);
2082 }
2083
2084 static int wiimod_drums_open(struct input_dev *dev)
2085 {
2086         struct wiimote_data *wdata = input_get_drvdata(dev);
2087         unsigned long flags;
2088
2089         spin_lock_irqsave(&wdata->state.lock, flags);
2090         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2091         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2092         spin_unlock_irqrestore(&wdata->state.lock, flags);
2093
2094         return 0;
2095 }
2096
2097 static void wiimod_drums_close(struct input_dev *dev)
2098 {
2099         struct wiimote_data *wdata = input_get_drvdata(dev);
2100         unsigned long flags;
2101
2102         spin_lock_irqsave(&wdata->state.lock, flags);
2103         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2104         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2105         spin_unlock_irqrestore(&wdata->state.lock, flags);
2106 }
2107
2108 static int wiimod_drums_probe(const struct wiimod_ops *ops,
2109                               struct wiimote_data *wdata)
2110 {
2111         int ret;
2112
2113         wdata->extension.input = input_allocate_device();
2114         if (!wdata->extension.input)
2115                 return -ENOMEM;
2116
2117         input_set_drvdata(wdata->extension.input, wdata);
2118         wdata->extension.input->open = wiimod_drums_open;
2119         wdata->extension.input->close = wiimod_drums_close;
2120         wdata->extension.input->dev.parent = &wdata->hdev->dev;
2121         wdata->extension.input->id.bustype = wdata->hdev->bus;
2122         wdata->extension.input->id.vendor = wdata->hdev->vendor;
2123         wdata->extension.input->id.product = wdata->hdev->product;
2124         wdata->extension.input->id.version = wdata->hdev->version;
2125         wdata->extension.input->name = WIIMOTE_NAME " Drums";
2126
2127         set_bit(EV_KEY, wdata->extension.input->evbit);
2128         set_bit(BTN_START, wdata->extension.input->keybit);
2129         set_bit(BTN_SELECT, wdata->extension.input->keybit);
2130
2131         set_bit(EV_ABS, wdata->extension.input->evbit);
2132         set_bit(ABS_X, wdata->extension.input->absbit);
2133         set_bit(ABS_Y, wdata->extension.input->absbit);
2134         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
2135         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
2136         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
2137         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
2138         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
2139         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
2140         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
2141         input_set_abs_params(wdata->extension.input,
2142                              ABS_X, -32, 31, 1, 1);
2143         input_set_abs_params(wdata->extension.input,
2144                              ABS_Y, -32, 31, 1, 1);
2145         input_set_abs_params(wdata->extension.input,
2146                              ABS_HAT0X, 0, 7, 0, 0);
2147         input_set_abs_params(wdata->extension.input,
2148                              ABS_HAT0Y, 0, 7, 0, 0);
2149         input_set_abs_params(wdata->extension.input,
2150                              ABS_HAT1X, 0, 7, 0, 0);
2151         input_set_abs_params(wdata->extension.input,
2152                              ABS_HAT2X, 0, 7, 0, 0);
2153         input_set_abs_params(wdata->extension.input,
2154                              ABS_HAT2Y, 0, 7, 0, 0);
2155         input_set_abs_params(wdata->extension.input,
2156                              ABS_HAT3X, 0, 7, 0, 0);
2157         input_set_abs_params(wdata->extension.input,
2158                              ABS_HAT3Y, 0, 7, 0, 0);
2159
2160         ret = input_register_device(wdata->extension.input);
2161         if (ret)
2162                 goto err_free;
2163
2164         return 0;
2165
2166 err_free:
2167         input_free_device(wdata->extension.input);
2168         wdata->extension.input = NULL;
2169         return ret;
2170 }
2171
2172 static void wiimod_drums_remove(const struct wiimod_ops *ops,
2173                                 struct wiimote_data *wdata)
2174 {
2175         if (!wdata->extension.input)
2176                 return;
2177
2178         input_unregister_device(wdata->extension.input);
2179         wdata->extension.input = NULL;
2180 }
2181
2182 static const struct wiimod_ops wiimod_drums = {
2183         .flags = 0,
2184         .arg = 0,
2185         .probe = wiimod_drums_probe,
2186         .remove = wiimod_drums_remove,
2187         .in_ext = wiimod_drums_in_ext,
2188 };
2189
2190 /*
2191  * Guitar
2192  * Guitar-Hero, Rock-Band and other games came bundled with guitars which can
2193  * be plugged as extension to a Wiimote.
2194  * We create a separate device for guitars and report all information via this
2195  * input device.
2196  */
2197
2198 enum wiimod_guitar_keys {
2199         WIIMOD_GUITAR_KEY_G,
2200         WIIMOD_GUITAR_KEY_R,
2201         WIIMOD_GUITAR_KEY_Y,
2202         WIIMOD_GUITAR_KEY_B,
2203         WIIMOD_GUITAR_KEY_O,
2204         WIIMOD_GUITAR_KEY_UP,
2205         WIIMOD_GUITAR_KEY_DOWN,
2206         WIIMOD_GUITAR_KEY_PLUS,
2207         WIIMOD_GUITAR_KEY_MINUS,
2208         WIIMOD_GUITAR_KEY_NUM,
2209 };
2210
2211 static const __u16 wiimod_guitar_map[] = {
2212         BTN_1,                  /* WIIMOD_GUITAR_KEY_G */
2213         BTN_2,                  /* WIIMOD_GUITAR_KEY_R */
2214         BTN_3,                  /* WIIMOD_GUITAR_KEY_Y */
2215         BTN_4,                  /* WIIMOD_GUITAR_KEY_B */
2216         BTN_5,                  /* WIIMOD_GUITAR_KEY_O */
2217         BTN_DPAD_UP,            /* WIIMOD_GUITAR_KEY_UP */
2218         BTN_DPAD_DOWN,          /* WIIMOD_GUITAR_KEY_DOWN */
2219         BTN_START,              /* WIIMOD_GUITAR_KEY_PLUS */
2220         BTN_SELECT,             /* WIIMOD_GUITAR_KEY_MINUS */
2221 };
2222
2223 static void wiimod_guitar_in_ext(struct wiimote_data *wdata, const __u8 *ext)
2224 {
2225         __u8 sx, sy, tb, wb, bd, bm, bp, bo, br, bb, bg, by, bu;
2226
2227         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2228          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2229          *    1   |  0  |  0  |              SX <5:0>             |
2230          *    2   |  0  |  0  |              SY <5:0>             |
2231          *   -----+-----+-----+-----+-----------------------------+
2232          *    3   |  0  |  0  |  0  |      TB <4:0>               |
2233          *   -----+-----+-----+-----+-----------------------------+
2234          *    4   |  0  |  0  |  0  |      WB <4:0>               |
2235          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2236          *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |  1  |
2237          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2238          *    6   | BO  | BR  | BB  | BG  | BY  |  1  |  1  | BU  |
2239          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2240          * All buttons are 0 if pressed
2241          *
2242          * With Motion+ enabled, it will look like this:
2243          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2244          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2245          *    1   |  0  |  0  |              SX <5:1>       | BU  |
2246          *    2   |  0  |  0  |              SY <5:1>       |  1  |
2247          *   -----+-----+-----+-----+-----------------------+-----+
2248          *    3   |  0  |  0  |  0  |      TB <4:0>               |
2249          *   -----+-----+-----+-----+-----------------------------+
2250          *    4   |  0  |  0  |  0  |      WB <4:0>               |
2251          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2252          *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |XXXXX|
2253          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2254          *    6   | BO  | BR  | BB  | BG  | BY  |  1  |XXXXX|XXXXX|
2255          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2256          */
2257
2258         sx = ext[0] & 0x3f;
2259         sy = ext[1] & 0x3f;
2260         tb = ext[2] & 0x1f;
2261         wb = ext[3] & 0x1f;
2262         bd = !(ext[4] & 0x40);
2263         bm = !(ext[4] & 0x10);
2264         bp = !(ext[4] & 0x04);
2265         bo = !(ext[5] & 0x80);
2266         br = !(ext[5] & 0x40);
2267         bb = !(ext[5] & 0x20);
2268         bg = !(ext[5] & 0x10);
2269         by = !(ext[5] & 0x08);
2270         bu = !(ext[5] & 0x01);
2271
2272         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2273                 bu = !(ext[0] & 0x01);
2274                 sx &= 0x3e;
2275                 sy &= 0x3e;
2276         }
2277
2278         input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
2279         input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);
2280         input_report_abs(wdata->extension.input, ABS_HAT0X, tb);
2281         input_report_abs(wdata->extension.input, ABS_HAT1X, wb - 0x10);
2282
2283         input_report_key(wdata->extension.input,
2284                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_G],
2285                          bg);
2286         input_report_key(wdata->extension.input,
2287                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_R],
2288                          br);
2289         input_report_key(wdata->extension.input,
2290                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_Y],
2291                          by);
2292         input_report_key(wdata->extension.input,
2293                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_B],
2294                          bb);
2295         input_report_key(wdata->extension.input,
2296                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_O],
2297                          bo);
2298         input_report_key(wdata->extension.input,
2299                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_UP],
2300                          bu);
2301         input_report_key(wdata->extension.input,
2302                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_DOWN],
2303                          bd);
2304         input_report_key(wdata->extension.input,
2305                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_PLUS],
2306                          bp);
2307         input_report_key(wdata->extension.input,
2308                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_MINUS],
2309                          bm);
2310
2311         input_sync(wdata->extension.input);
2312 }
2313
2314 static int wiimod_guitar_open(struct input_dev *dev)
2315 {
2316         struct wiimote_data *wdata = input_get_drvdata(dev);
2317         unsigned long flags;
2318
2319         spin_lock_irqsave(&wdata->state.lock, flags);
2320         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2321         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2322         spin_unlock_irqrestore(&wdata->state.lock, flags);
2323
2324         return 0;
2325 }
2326
2327 static void wiimod_guitar_close(struct input_dev *dev)
2328 {
2329         struct wiimote_data *wdata = input_get_drvdata(dev);
2330         unsigned long flags;
2331
2332         spin_lock_irqsave(&wdata->state.lock, flags);
2333         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2334         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2335         spin_unlock_irqrestore(&wdata->state.lock, flags);
2336 }
2337
2338 static int wiimod_guitar_probe(const struct wiimod_ops *ops,
2339                                struct wiimote_data *wdata)
2340 {
2341         int ret, i;
2342
2343         wdata->extension.input = input_allocate_device();
2344         if (!wdata->extension.input)
2345                 return -ENOMEM;
2346
2347         input_set_drvdata(wdata->extension.input, wdata);
2348         wdata->extension.input->open = wiimod_guitar_open;
2349         wdata->extension.input->close = wiimod_guitar_close;
2350         wdata->extension.input->dev.parent = &wdata->hdev->dev;
2351         wdata->extension.input->id.bustype = wdata->hdev->bus;
2352         wdata->extension.input->id.vendor = wdata->hdev->vendor;
2353         wdata->extension.input->id.product = wdata->hdev->product;
2354         wdata->extension.input->id.version = wdata->hdev->version;
2355         wdata->extension.input->name = WIIMOTE_NAME " Guitar";
2356
2357         set_bit(EV_KEY, wdata->extension.input->evbit);
2358         for (i = 0; i < WIIMOD_GUITAR_KEY_NUM; ++i)
2359                 set_bit(wiimod_guitar_map[i],
2360                         wdata->extension.input->keybit);
2361
2362         set_bit(EV_ABS, wdata->extension.input->evbit);
2363         set_bit(ABS_X, wdata->extension.input->absbit);
2364         set_bit(ABS_Y, wdata->extension.input->absbit);
2365         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
2366         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
2367         input_set_abs_params(wdata->extension.input,
2368                              ABS_X, -32, 31, 1, 1);
2369         input_set_abs_params(wdata->extension.input,
2370                              ABS_Y, -32, 31, 1, 1);
2371         input_set_abs_params(wdata->extension.input,
2372                              ABS_HAT0X, 0, 0x1f, 1, 1);
2373         input_set_abs_params(wdata->extension.input,
2374                              ABS_HAT1X, 0, 0x0f, 1, 1);
2375
2376         ret = input_register_device(wdata->extension.input);
2377         if (ret)
2378                 goto err_free;
2379
2380         return 0;
2381
2382 err_free:
2383         input_free_device(wdata->extension.input);
2384         wdata->extension.input = NULL;
2385         return ret;
2386 }
2387
2388 static void wiimod_guitar_remove(const struct wiimod_ops *ops,
2389                                  struct wiimote_data *wdata)
2390 {
2391         if (!wdata->extension.input)
2392                 return;
2393
2394         input_unregister_device(wdata->extension.input);
2395         wdata->extension.input = NULL;
2396 }
2397
2398 static const struct wiimod_ops wiimod_guitar = {
2399         .flags = 0,
2400         .arg = 0,
2401         .probe = wiimod_guitar_probe,
2402         .remove = wiimod_guitar_remove,
2403         .in_ext = wiimod_guitar_in_ext,
2404 };
2405
2406 /*
2407  * Builtin Motion Plus
2408  * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
2409  * disables polling for Motion-Plus. This should be set only for devices which
2410  * don't allow MP hotplugging.
2411  */
2412
2413 static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
2414                                    struct wiimote_data *wdata)
2415 {
2416         unsigned long flags;
2417
2418         spin_lock_irqsave(&wdata->state.lock, flags);
2419         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2420         spin_unlock_irqrestore(&wdata->state.lock, flags);
2421
2422         return 0;
2423 }
2424
2425 static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
2426                                      struct wiimote_data *wdata)
2427 {
2428         unsigned long flags;
2429
2430         spin_lock_irqsave(&wdata->state.lock, flags);
2431         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2432         spin_unlock_irqrestore(&wdata->state.lock, flags);
2433 }
2434
2435 static const struct wiimod_ops wiimod_builtin_mp = {
2436         .flags = 0,
2437         .arg = 0,
2438         .probe = wiimod_builtin_mp_probe,
2439         .remove = wiimod_builtin_mp_remove,
2440 };
2441
2442 /*
2443  * No Motion Plus
2444  * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
2445  * disables motion-plus. This is needed for devices that advertise this but we
2446  * don't know how to use it (or whether it is actually present).
2447  */
2448
2449 static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
2450                               struct wiimote_data *wdata)
2451 {
2452         unsigned long flags;
2453
2454         spin_lock_irqsave(&wdata->state.lock, flags);
2455         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2456         spin_unlock_irqrestore(&wdata->state.lock, flags);
2457
2458         return 0;
2459 }
2460
2461 static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2462                                 struct wiimote_data *wdata)
2463 {
2464         unsigned long flags;
2465
2466         spin_lock_irqsave(&wdata->state.lock, flags);
2467         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2468         spin_unlock_irqrestore(&wdata->state.lock, flags);
2469 }
2470
2471 static const struct wiimod_ops wiimod_no_mp = {
2472         .flags = 0,
2473         .arg = 0,
2474         .probe = wiimod_no_mp_probe,
2475         .remove = wiimod_no_mp_remove,
2476 };
2477
2478 /*
2479  * Motion Plus
2480  * The Motion Plus extension provides rotation sensors (gyro) as a small
2481  * extension device for Wii Remotes. Many devices have them built-in so
2482  * you cannot see them from the outside.
2483  * Motion Plus extensions are special because they are on a separate extension
2484  * port and allow other extensions to be used simultaneously. This is all
2485  * handled by the Wiimote Core so we don't have to deal with it.
2486  */
2487
2488 static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2489 {
2490         __s32 x, y, z;
2491
2492         /*        |   8    7    6    5    4    3 |  2  |  1  |
2493          *   -----+------------------------------+-----+-----+
2494          *    1   |               Yaw Speed <7:0>            |
2495          *    2   |              Roll Speed <7:0>            |
2496          *    3   |             Pitch Speed <7:0>            |
2497          *   -----+------------------------------+-----+-----+
2498          *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
2499          *   -----+------------------------------+-----+-----+
2500          *    5   |      Roll Speed <13:8>       |Roll | Ext |
2501          *   -----+------------------------------+-----+-----+
2502          *    6   |     Pitch Speed <13:8>       |  1  |  0  |
2503          *   -----+------------------------------+-----+-----+
2504          * The single bits Yaw, Roll, Pitch in the lower right corner specify
2505          * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2506          * roation is 8192/440 units / deg/s and for fast rotation 8192/2000
2507          * units / deg/s. To get a linear scale for fast rotation we multiply
2508          * by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
2509          * previous scale reported by this driver.
2510          * This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2511          * If the wiimote is not rotating the sensor reports 2^13 = 8192.
2512          * Ext specifies whether an extension is connected to the motionp.
2513          * which is parsed by wiimote-core.
2514          */
2515
2516         x = ext[0];
2517         y = ext[1];
2518         z = ext[2];
2519
2520         x |= (((__u16)ext[3]) << 6) & 0xff00;
2521         y |= (((__u16)ext[4]) << 6) & 0xff00;
2522         z |= (((__u16)ext[5]) << 6) & 0xff00;
2523
2524         x -= 8192;
2525         y -= 8192;
2526         z -= 8192;
2527
2528         if (!(ext[3] & 0x02))
2529                 x = (x * 2000 * 9) / 440;
2530         else
2531                 x *= 9;
2532         if (!(ext[4] & 0x02))
2533                 y = (y * 2000 * 9) / 440;
2534         else
2535                 y *= 9;
2536         if (!(ext[3] & 0x01))
2537                 z = (z * 2000 * 9) / 440;
2538         else
2539                 z *= 9;
2540
2541         input_report_abs(wdata->mp, ABS_RX, x);
2542         input_report_abs(wdata->mp, ABS_RY, y);
2543         input_report_abs(wdata->mp, ABS_RZ, z);
2544         input_sync(wdata->mp);
2545 }
2546
2547 static int wiimod_mp_open(struct input_dev *dev)
2548 {
2549         struct wiimote_data *wdata = input_get_drvdata(dev);
2550         unsigned long flags;
2551
2552         spin_lock_irqsave(&wdata->state.lock, flags);
2553         wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2554         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2555         __wiimote_schedule(wdata);
2556         spin_unlock_irqrestore(&wdata->state.lock, flags);
2557
2558         return 0;
2559 }
2560
2561 static void wiimod_mp_close(struct input_dev *dev)
2562 {
2563         struct wiimote_data *wdata = input_get_drvdata(dev);
2564         unsigned long flags;
2565
2566         spin_lock_irqsave(&wdata->state.lock, flags);
2567         wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2568         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2569         __wiimote_schedule(wdata);
2570         spin_unlock_irqrestore(&wdata->state.lock, flags);
2571 }
2572
2573 static int wiimod_mp_probe(const struct wiimod_ops *ops,
2574                            struct wiimote_data *wdata)
2575 {
2576         int ret;
2577
2578         wdata->mp = input_allocate_device();
2579         if (!wdata->mp)
2580                 return -ENOMEM;
2581
2582         input_set_drvdata(wdata->mp, wdata);
2583         wdata->mp->open = wiimod_mp_open;
2584         wdata->mp->close = wiimod_mp_close;
2585         wdata->mp->dev.parent = &wdata->hdev->dev;
2586         wdata->mp->id.bustype = wdata->hdev->bus;
2587         wdata->mp->id.vendor = wdata->hdev->vendor;
2588         wdata->mp->id.product = wdata->hdev->product;
2589         wdata->mp->id.version = wdata->hdev->version;
2590         wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2591
2592         set_bit(EV_ABS, wdata->mp->evbit);
2593         set_bit(ABS_RX, wdata->mp->absbit);
2594         set_bit(ABS_RY, wdata->mp->absbit);
2595         set_bit(ABS_RZ, wdata->mp->absbit);
2596         input_set_abs_params(wdata->mp,
2597                              ABS_RX, -16000, 16000, 4, 8);
2598         input_set_abs_params(wdata->mp,
2599                              ABS_RY, -16000, 16000, 4, 8);
2600         input_set_abs_params(wdata->mp,
2601                              ABS_RZ, -16000, 16000, 4, 8);
2602
2603         ret = input_register_device(wdata->mp);
2604         if (ret)
2605                 goto err_free;
2606
2607         return 0;
2608
2609 err_free:
2610         input_free_device(wdata->mp);
2611         wdata->mp = NULL;
2612         return ret;
2613 }
2614
2615 static void wiimod_mp_remove(const struct wiimod_ops *ops,
2616                              struct wiimote_data *wdata)
2617 {
2618         if (!wdata->mp)
2619                 return;
2620
2621         input_unregister_device(wdata->mp);
2622         wdata->mp = NULL;
2623 }
2624
2625 const struct wiimod_ops wiimod_mp = {
2626         .flags = 0,
2627         .arg = 0,
2628         .probe = wiimod_mp_probe,
2629         .remove = wiimod_mp_remove,
2630         .in_mp = wiimod_mp_in_mp,
2631 };
2632
2633 /* module table */
2634
2635 static const struct wiimod_ops wiimod_dummy;
2636
2637 const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2638         [WIIMOD_KEYS] = &wiimod_keys,
2639         [WIIMOD_RUMBLE] = &wiimod_rumble,
2640         [WIIMOD_BATTERY] = &wiimod_battery,
2641         [WIIMOD_LED1] = &wiimod_leds[0],
2642         [WIIMOD_LED2] = &wiimod_leds[1],
2643         [WIIMOD_LED3] = &wiimod_leds[2],
2644         [WIIMOD_LED4] = &wiimod_leds[3],
2645         [WIIMOD_ACCEL] = &wiimod_accel,
2646         [WIIMOD_IR] = &wiimod_ir,
2647         [WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2648         [WIIMOD_NO_MP] = &wiimod_no_mp,
2649 };
2650
2651 const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2652         [WIIMOTE_EXT_NONE] = &wiimod_dummy,
2653         [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2654         [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2655         [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2656         [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2657         [WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2658         [WIIMOTE_EXT_DRUMS] = &wiimod_drums,
2659         [WIIMOTE_EXT_GUITAR] = &wiimod_guitar,
2660 };