linux/drivers/hid/hid-wiimote-modules.c
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   1/*
   2 * Device Modules for Nintendo Wii / Wii U HID Driver
   3 * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
   4 */
   5
   6/*
   7 * This program is free software; you can redistribute it and/or modify it
   8 * under the terms of the GNU General Public License as published by the Free
   9 * Software Foundation; either version 2 of the License, or (at your option)
  10 * any later version.
  11 */
  12
  13/*
  14 * Wiimote Modules
  15 * Nintendo devices provide different peripherals and many new devices lack
  16 * initial features like the IR camera. Therefore, each peripheral device is
  17 * implemented as an independent module and we probe on each device only the
  18 * modules for the hardware that really is available.
  19 *
  20 * Module registration is sequential. Unregistration is done in reverse order.
  21 * After device detection, the needed modules are loaded. Users can trigger
  22 * re-detection which causes all modules to be unloaded and then reload the
  23 * modules for the new detected device.
  24 *
  25 * wdata->input is a shared input device. It is always initialized prior to
  26 * module registration. If at least one registered module is marked as
  27 * WIIMOD_FLAG_INPUT, then the input device will get registered after all
  28 * modules were registered.
  29 * Please note that it is unregistered _before_ the "remove" callbacks are
  30 * called. This guarantees that no input interaction is done, anymore. However,
  31 * the wiimote core keeps a reference to the input device so it is freed only
  32 * after all modules were removed. It is safe to send events to unregistered
  33 * input devices.
  34 */
  35
  36#include <linux/device.h>
  37#include <linux/hid.h>
  38#include <linux/input.h>
  39#include <linux/spinlock.h>
  40#include "hid-wiimote.h"
  41
  42/*
  43 * Keys
  44 * The initial Wii Remote provided a bunch of buttons that are reported as
  45 * part of the core protocol. Many later devices dropped these and report
  46 * invalid data in the core button reports. Load this only on devices which
  47 * correctly send button reports.
  48 * It uses the shared input device.
  49 */
  50
  51static const __u16 wiimod_keys_map[] = {
  52        KEY_LEFT,       /* WIIPROTO_KEY_LEFT */
  53        KEY_RIGHT,      /* WIIPROTO_KEY_RIGHT */
  54        KEY_UP,         /* WIIPROTO_KEY_UP */
  55        KEY_DOWN,       /* WIIPROTO_KEY_DOWN */
  56        KEY_NEXT,       /* WIIPROTO_KEY_PLUS */
  57        KEY_PREVIOUS,   /* WIIPROTO_KEY_MINUS */
  58        BTN_1,          /* WIIPROTO_KEY_ONE */
  59        BTN_2,          /* WIIPROTO_KEY_TWO */
  60        BTN_A,          /* WIIPROTO_KEY_A */
  61        BTN_B,          /* WIIPROTO_KEY_B */
  62        BTN_MODE,       /* WIIPROTO_KEY_HOME */
  63};
  64
  65static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
  66{
  67        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
  68                                                        !!(keys[0] & 0x01));
  69        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
  70                                                        !!(keys[0] & 0x02));
  71        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
  72                                                        !!(keys[0] & 0x04));
  73        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
  74                                                        !!(keys[0] & 0x08));
  75        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
  76                                                        !!(keys[0] & 0x10));
  77        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
  78                                                        !!(keys[1] & 0x01));
  79        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
  80                                                        !!(keys[1] & 0x02));
  81        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
  82                                                        !!(keys[1] & 0x04));
  83        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
  84                                                        !!(keys[1] & 0x08));
  85        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
  86                                                        !!(keys[1] & 0x10));
  87        input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
  88                                                        !!(keys[1] & 0x80));
  89        input_sync(wdata->input);
  90}
  91
  92static int wiimod_keys_probe(const struct wiimod_ops *ops,
  93                             struct wiimote_data *wdata)
  94{
  95        unsigned int i;
  96
  97        set_bit(EV_KEY, wdata->input->evbit);
  98        for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
  99                set_bit(wiimod_keys_map[i], wdata->input->keybit);
 100
 101        return 0;
 102}
 103
 104static const struct wiimod_ops wiimod_keys = {
 105        .flags = WIIMOD_FLAG_INPUT,
 106        .arg = 0,
 107        .probe = wiimod_keys_probe,
 108        .remove = NULL,
 109        .in_keys = wiimod_keys_in_keys,
 110};
 111
 112/*
 113 * Rumble
 114 * Nearly all devices provide a rumble feature. A small motor for
 115 * force-feedback effects. We provide an FF_RUMBLE memless ff device on the
 116 * shared input device if this module is loaded.
 117 * The rumble motor is controlled via a flag on almost every output report so
 118 * the wiimote core handles the rumble flag. But if a device doesn't provide
 119 * the rumble motor, this flag shouldn't be set.
 120 */
 121
 122/* used by wiimod_rumble and wiipro_rumble */
 123static void wiimod_rumble_worker(struct work_struct *work)
 124{
 125        struct wiimote_data *wdata = container_of(work, struct wiimote_data,
 126                                                  rumble_worker);
 127
 128        spin_lock_irq(&wdata->state.lock);
 129        wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
 130        spin_unlock_irq(&wdata->state.lock);
 131}
 132
 133static int wiimod_rumble_play(struct input_dev *dev, void *data,
 134                              struct ff_effect *eff)
 135{
 136        struct wiimote_data *wdata = input_get_drvdata(dev);
 137        __u8 value;
 138
 139        /*
 140         * The wiimote supports only a single rumble motor so if any magnitude
 141         * is set to non-zero then we start the rumble motor. If both are set to
 142         * zero, we stop the rumble motor.
 143         */
 144
 145        if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 146                value = 1;
 147        else
 148                value = 0;
 149
 150        /* Locking state.lock here might deadlock with input_event() calls.
 151         * schedule_work acts as barrier. Merging multiple changes is fine. */
 152        wdata->state.cache_rumble = value;
 153        schedule_work(&wdata->rumble_worker);
 154
 155        return 0;
 156}
 157
 158static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 159                               struct wiimote_data *wdata)
 160{
 161        INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
 162
 163        set_bit(FF_RUMBLE, wdata->input->ffbit);
 164        if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 165                return -ENOMEM;
 166
 167        return 0;
 168}
 169
 170static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 171                                 struct wiimote_data *wdata)
 172{
 173        unsigned long flags;
 174
 175        cancel_work_sync(&wdata->rumble_worker);
 176
 177        spin_lock_irqsave(&wdata->state.lock, flags);
 178        wiiproto_req_rumble(wdata, 0);
 179        spin_unlock_irqrestore(&wdata->state.lock, flags);
 180}
 181
 182static const struct wiimod_ops wiimod_rumble = {
 183        .flags = WIIMOD_FLAG_INPUT,
 184        .arg = 0,
 185        .probe = wiimod_rumble_probe,
 186        .remove = wiimod_rumble_remove,
 187};
 188
 189/*
 190 * Battery
 191 * 1 byte of battery capacity information is sent along every protocol status
 192 * report. The wiimote core caches it but we try to update it on every
 193 * user-space request.
 194 * This is supported by nearly every device so it's almost always enabled.
 195 */
 196
 197static enum power_supply_property wiimod_battery_props[] = {
 198        POWER_SUPPLY_PROP_CAPACITY,
 199        POWER_SUPPLY_PROP_SCOPE,
 200};
 201
 202static int wiimod_battery_get_property(struct power_supply *psy,
 203                                       enum power_supply_property psp,
 204                                       union power_supply_propval *val)
 205{
 206        struct wiimote_data *wdata = power_supply_get_drvdata(psy);
 207        int ret = 0, state;
 208        unsigned long flags;
 209
 210        if (psp == POWER_SUPPLY_PROP_SCOPE) {
 211                val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 212                return 0;
 213        } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 214                return -EINVAL;
 215        }
 216
 217        ret = wiimote_cmd_acquire(wdata);
 218        if (ret)
 219                return ret;
 220
 221        spin_lock_irqsave(&wdata->state.lock, flags);
 222        wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 223        wiiproto_req_status(wdata);
 224        spin_unlock_irqrestore(&wdata->state.lock, flags);
 225
 226        wiimote_cmd_wait(wdata);
 227        wiimote_cmd_release(wdata);
 228
 229        spin_lock_irqsave(&wdata->state.lock, flags);
 230        state = wdata->state.cmd_battery;
 231        spin_unlock_irqrestore(&wdata->state.lock, flags);
 232
 233        val->intval = state * 100 / 255;
 234        return ret;
 235}
 236
 237static int wiimod_battery_probe(const struct wiimod_ops *ops,
 238                                struct wiimote_data *wdata)
 239{
 240        struct power_supply_config psy_cfg = { .drv_data = wdata, };
 241        int ret;
 242
 243        wdata->battery_desc.properties = wiimod_battery_props;
 244        wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
 245        wdata->battery_desc.get_property = wiimod_battery_get_property;
 246        wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 247        wdata->battery_desc.use_for_apm = 0;
 248        wdata->battery_desc.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 249                                             wdata->hdev->uniq);
 250        if (!wdata->battery_desc.name)
 251                return -ENOMEM;
 252
 253        wdata->battery = power_supply_register(&wdata->hdev->dev,
 254                                               &wdata->battery_desc,
 255                                               &psy_cfg);
 256        if (IS_ERR(wdata->battery)) {
 257                hid_err(wdata->hdev, "cannot register battery device\n");
 258                ret = PTR_ERR(wdata->battery);
 259                goto err_free;
 260        }
 261
 262        power_supply_powers(wdata->battery, &wdata->hdev->dev);
 263        return 0;
 264
 265err_free:
 266        kfree(wdata->battery_desc.name);
 267        wdata->battery_desc.name = NULL;
 268        return ret;
 269}
 270
 271static void wiimod_battery_remove(const struct wiimod_ops *ops,
 272                                  struct wiimote_data *wdata)
 273{
 274        if (!wdata->battery_desc.name)
 275                return;
 276
 277        power_supply_unregister(wdata->battery);
 278        kfree(wdata->battery_desc.name);
 279        wdata->battery_desc.name = NULL;
 280}
 281
 282static const struct wiimod_ops wiimod_battery = {
 283        .flags = 0,
 284        .arg = 0,
 285        .probe = wiimod_battery_probe,
 286        .remove = wiimod_battery_remove,
 287};
 288
 289/*
 290 * LED
 291 * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 292 * wiimod_ops structure specifies which LED this module controls. This allows
 293 * to register a limited number of LEDs.
 294 * State is managed by wiimote core.
 295 */
 296
 297static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
 298{
 299        struct device *dev = led_dev->dev->parent;
 300        struct wiimote_data *wdata = dev_to_wii(dev);
 301        int i;
 302        unsigned long flags;
 303        bool value = false;
 304
 305        for (i = 0; i < 4; ++i) {
 306                if (wdata->leds[i] == led_dev) {
 307                        spin_lock_irqsave(&wdata->state.lock, flags);
 308                        value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 309                        spin_unlock_irqrestore(&wdata->state.lock, flags);
 310                        break;
 311                }
 312        }
 313
 314        return value ? LED_FULL : LED_OFF;
 315}
 316
 317static void wiimod_led_set(struct led_classdev *led_dev,
 318                           enum led_brightness value)
 319{
 320        struct device *dev = led_dev->dev->parent;
 321        struct wiimote_data *wdata = dev_to_wii(dev);
 322        int i;
 323        unsigned long flags;
 324        __u8 state, flag;
 325
 326        for (i = 0; i < 4; ++i) {
 327                if (wdata->leds[i] == led_dev) {
 328                        flag = WIIPROTO_FLAG_LED(i + 1);
 329                        spin_lock_irqsave(&wdata->state.lock, flags);
 330                        state = wdata->state.flags;
 331                        if (value == LED_OFF)
 332                                wiiproto_req_leds(wdata, state & ~flag);
 333                        else
 334                                wiiproto_req_leds(wdata, state | flag);
 335                        spin_unlock_irqrestore(&wdata->state.lock, flags);
 336                        break;
 337                }
 338        }
 339}
 340
 341static int wiimod_led_probe(const struct wiimod_ops *ops,
 342                            struct wiimote_data *wdata)
 343{
 344        struct device *dev = &wdata->hdev->dev;
 345        size_t namesz = strlen(dev_name(dev)) + 9;
 346        struct led_classdev *led;
 347        unsigned long flags;
 348        char *name;
 349        int ret;
 350
 351        led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 352        if (!led)
 353                return -ENOMEM;
 354
 355        name = (void*)&led[1];
 356        snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 357        led->name = name;
 358        led->brightness = 0;
 359        led->max_brightness = 1;
 360        led->brightness_get = wiimod_led_get;
 361        led->brightness_set = wiimod_led_set;
 362
 363        wdata->leds[ops->arg] = led;
 364        ret = led_classdev_register(dev, led);
 365        if (ret)
 366                goto err_free;
 367
 368        /* enable LED1 to stop initial LED-blinking */
 369        if (ops->arg == 0) {
 370                spin_lock_irqsave(&wdata->state.lock, flags);
 371                wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 372                spin_unlock_irqrestore(&wdata->state.lock, flags);
 373        }
 374
 375        return 0;
 376
 377err_free:
 378        wdata->leds[ops->arg] = NULL;
 379        kfree(led);
 380        return ret;
 381}
 382
 383static void wiimod_led_remove(const struct wiimod_ops *ops,
 384                              struct wiimote_data *wdata)
 385{
 386        if (!wdata->leds[ops->arg])
 387                return;
 388
 389        led_classdev_unregister(wdata->leds[ops->arg]);
 390        kfree(wdata->leds[ops->arg]);
 391        wdata->leds[ops->arg] = NULL;
 392}
 393
 394static const struct wiimod_ops wiimod_leds[4] = {
 395        {
 396                .flags = 0,
 397                .arg = 0,
 398                .probe = wiimod_led_probe,
 399                .remove = wiimod_led_remove,
 400        },
 401        {
 402                .flags = 0,
 403                .arg = 1,
 404                .probe = wiimod_led_probe,
 405                .remove = wiimod_led_remove,
 406        },
 407        {
 408                .flags = 0,
 409                .arg = 2,
 410                .probe = wiimod_led_probe,
 411                .remove = wiimod_led_remove,
 412        },
 413        {
 414                .flags = 0,
 415                .arg = 3,
 416                .probe = wiimod_led_probe,
 417                .remove = wiimod_led_remove,
 418        },
 419};
 420
 421/*
 422 * Accelerometer
 423 * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 424 * device, it's mostly cleared to 0. This module parses this data and provides
 425 * it via a separate input device.
 426 */
 427
 428static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 429                                  const __u8 *accel)
 430{
 431        __u16 x, y, z;
 432
 433        if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 434                return;
 435
 436        /*
 437         * payload is: BB BB XX YY ZZ
 438         * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 439         * contain the upper 8 bits of each value. The lower 2 bits are
 440         * contained in the buttons data BB BB.
 441         * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 442         * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 443         * accel value and bit 6 is the second bit of the Z value.
 444         * The first bit of Y and Z values is not available and always set to 0.
 445         * 0x200 is returned on no movement.
 446         */
 447
 448        x = accel[2] << 2;
 449        y = accel[3] << 2;
 450        z = accel[4] << 2;
 451
 452        x |= (accel[0] >> 5) & 0x3;
 453        y |= (accel[1] >> 4) & 0x2;
 454        z |= (accel[1] >> 5) & 0x2;
 455
 456        input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 457        input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 458        input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 459        input_sync(wdata->accel);
 460}
 461
 462static int wiimod_accel_open(struct input_dev *dev)
 463{
 464        struct wiimote_data *wdata = input_get_drvdata(dev);
 465        unsigned long flags;
 466
 467        spin_lock_irqsave(&wdata->state.lock, flags);
 468        wiiproto_req_accel(wdata, true);
 469        spin_unlock_irqrestore(&wdata->state.lock, flags);
 470
 471        return 0;
 472}
 473
 474static void wiimod_accel_close(struct input_dev *dev)
 475{
 476        struct wiimote_data *wdata = input_get_drvdata(dev);
 477        unsigned long flags;
 478
 479        spin_lock_irqsave(&wdata->state.lock, flags);
 480        wiiproto_req_accel(wdata, false);
 481        spin_unlock_irqrestore(&wdata->state.lock, flags);
 482}
 483
 484static int wiimod_accel_probe(const struct wiimod_ops *ops,
 485                              struct wiimote_data *wdata)
 486{
 487        int ret;
 488
 489        wdata->accel = input_allocate_device();
 490        if (!wdata->accel)
 491                return -ENOMEM;
 492
 493        input_set_drvdata(wdata->accel, wdata);
 494        wdata->accel->open = wiimod_accel_open;
 495        wdata->accel->close = wiimod_accel_close;
 496        wdata->accel->dev.parent = &wdata->hdev->dev;
 497        wdata->accel->id.bustype = wdata->hdev->bus;
 498        wdata->accel->id.vendor = wdata->hdev->vendor;
 499        wdata->accel->id.product = wdata->hdev->product;
 500        wdata->accel->id.version = wdata->hdev->version;
 501        wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 502
 503        set_bit(EV_ABS, wdata->accel->evbit);
 504        set_bit(ABS_RX, wdata->accel->absbit);
 505        set_bit(ABS_RY, wdata->accel->absbit);
 506        set_bit(ABS_RZ, wdata->accel->absbit);
 507        input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 508        input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 509        input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 510
 511        ret = input_register_device(wdata->accel);
 512        if (ret) {
 513                hid_err(wdata->hdev, "cannot register input device\n");
 514                goto err_free;
 515        }
 516
 517        return 0;
 518
 519err_free:
 520        input_free_device(wdata->accel);
 521        wdata->accel = NULL;
 522        return ret;
 523}
 524
 525static void wiimod_accel_remove(const struct wiimod_ops *ops,
 526                                struct wiimote_data *wdata)
 527{
 528        if (!wdata->accel)
 529                return;
 530
 531        input_unregister_device(wdata->accel);
 532        wdata->accel = NULL;
 533}
 534
 535static const struct wiimod_ops wiimod_accel = {
 536        .flags = 0,
 537        .arg = 0,
 538        .probe = wiimod_accel_probe,
 539        .remove = wiimod_accel_remove,
 540        .in_accel = wiimod_accel_in_accel,
 541};
 542
 543/*
 544 * IR Cam
 545 * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 546 * to be initialized with a fairly complex procedure and consumes a lot of
 547 * power. Therefore, as long as no application uses the IR input device, it is
 548 * kept offline.
 549 * Nearly no other device than the normal Wii Remotes supports the IR cam so
 550 * you can disable this module for these devices.
 551 */
 552
 553static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 554                            bool packed, unsigned int id)
 555{
 556        __u16 x, y;
 557        __u8 xid, yid;
 558        bool sync = false;
 559
 560        if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 561                return;
 562
 563        switch (id) {
 564        case 0:
 565                xid = ABS_HAT0X;
 566                yid = ABS_HAT0Y;
 567                break;
 568        case 1:
 569                xid = ABS_HAT1X;
 570                yid = ABS_HAT1Y;
 571                break;
 572        case 2:
 573                xid = ABS_HAT2X;
 574                yid = ABS_HAT2Y;
 575                break;
 576        case 3:
 577                xid = ABS_HAT3X;
 578                yid = ABS_HAT3Y;
 579                sync = true;
 580                break;
 581        default:
 582                return;
 583        }
 584
 585        /*
 586         * Basic IR data is encoded into 3 bytes. The first two bytes are the
 587         * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 588         * of both.
 589         * If data is packed, then the 3rd byte is put first and slightly
 590         * reordered. This allows to interleave packed and non-packed data to
 591         * have two IR sets in 5 bytes instead of 6.
 592         * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 593         */
 594
 595        if (packed) {
 596                x = ir[1] | ((ir[0] & 0x03) << 8);
 597                y = ir[2] | ((ir[0] & 0x0c) << 6);
 598        } else {
 599                x = ir[0] | ((ir[2] & 0x30) << 4);
 600                y = ir[1] | ((ir[2] & 0xc0) << 2);
 601        }
 602
 603        input_report_abs(wdata->ir, xid, x);
 604        input_report_abs(wdata->ir, yid, y);
 605
 606        if (sync)
 607                input_sync(wdata->ir);
 608}
 609
 610static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 611{
 612        int ret;
 613        unsigned long flags;
 614        __u8 format = 0;
 615        static const __u8 data_enable[] = { 0x01 };
 616        static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 617                                                0x00, 0xaa, 0x00, 0x64 };
 618        static const __u8 data_sens2[] = { 0x63, 0x03 };
 619        static const __u8 data_fin[] = { 0x08 };
 620
 621        spin_lock_irqsave(&wdata->state.lock, flags);
 622
 623        if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 624                spin_unlock_irqrestore(&wdata->state.lock, flags);
 625                return 0;
 626        }
 627
 628        if (mode == 0) {
 629                wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 630                wiiproto_req_ir1(wdata, 0);
 631                wiiproto_req_ir2(wdata, 0);
 632                wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 633                spin_unlock_irqrestore(&wdata->state.lock, flags);
 634                return 0;
 635        }
 636
 637        spin_unlock_irqrestore(&wdata->state.lock, flags);
 638
 639        ret = wiimote_cmd_acquire(wdata);
 640        if (ret)
 641                return ret;
 642
 643        /* send PIXEL CLOCK ENABLE cmd first */
 644        spin_lock_irqsave(&wdata->state.lock, flags);
 645        wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 646        wiiproto_req_ir1(wdata, 0x06);
 647        spin_unlock_irqrestore(&wdata->state.lock, flags);
 648
 649        ret = wiimote_cmd_wait(wdata);
 650        if (ret)
 651                goto unlock;
 652        if (wdata->state.cmd_err) {
 653                ret = -EIO;
 654                goto unlock;
 655        }
 656
 657        /* enable IR LOGIC */
 658        spin_lock_irqsave(&wdata->state.lock, flags);
 659        wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 660        wiiproto_req_ir2(wdata, 0x06);
 661        spin_unlock_irqrestore(&wdata->state.lock, flags);
 662
 663        ret = wiimote_cmd_wait(wdata);
 664        if (ret)
 665                goto unlock;
 666        if (wdata->state.cmd_err) {
 667                ret = -EIO;
 668                goto unlock;
 669        }
 670
 671        /* enable IR cam but do not make it send data, yet */
 672        ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 673                                                        sizeof(data_enable));
 674        if (ret)
 675                goto unlock;
 676
 677        /* write first sensitivity block */
 678        ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 679                                                        sizeof(data_sens1));
 680        if (ret)
 681                goto unlock;
 682
 683        /* write second sensitivity block */
 684        ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 685                                                        sizeof(data_sens2));
 686        if (ret)
 687                goto unlock;
 688
 689        /* put IR cam into desired state */
 690        switch (mode) {
 691                case WIIPROTO_FLAG_IR_FULL:
 692                        format = 5;
 693                        break;
 694                case WIIPROTO_FLAG_IR_EXT:
 695                        format = 3;
 696                        break;
 697                case WIIPROTO_FLAG_IR_BASIC:
 698                        format = 1;
 699                        break;
 700        }
 701        ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 702        if (ret)
 703                goto unlock;
 704
 705        /* make IR cam send data */
 706        ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 707        if (ret)
 708                goto unlock;
 709
 710        /* request new DRM mode compatible to IR mode */
 711        spin_lock_irqsave(&wdata->state.lock, flags);
 712        wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 713        wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 714        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 715        spin_unlock_irqrestore(&wdata->state.lock, flags);
 716
 717unlock:
 718        wiimote_cmd_release(wdata);
 719        return ret;
 720}
 721
 722static int wiimod_ir_open(struct input_dev *dev)
 723{
 724        struct wiimote_data *wdata = input_get_drvdata(dev);
 725
 726        return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 727}
 728
 729static void wiimod_ir_close(struct input_dev *dev)
 730{
 731        struct wiimote_data *wdata = input_get_drvdata(dev);
 732
 733        wiimod_ir_change(wdata, 0);
 734}
 735
 736static int wiimod_ir_probe(const struct wiimod_ops *ops,
 737                           struct wiimote_data *wdata)
 738{
 739        int ret;
 740
 741        wdata->ir = input_allocate_device();
 742        if (!wdata->ir)
 743                return -ENOMEM;
 744
 745        input_set_drvdata(wdata->ir, wdata);
 746        wdata->ir->open = wiimod_ir_open;
 747        wdata->ir->close = wiimod_ir_close;
 748        wdata->ir->dev.parent = &wdata->hdev->dev;
 749        wdata->ir->id.bustype = wdata->hdev->bus;
 750        wdata->ir->id.vendor = wdata->hdev->vendor;
 751        wdata->ir->id.product = wdata->hdev->product;
 752        wdata->ir->id.version = wdata->hdev->version;
 753        wdata->ir->name = WIIMOTE_NAME " IR";
 754
 755        set_bit(EV_ABS, wdata->ir->evbit);
 756        set_bit(ABS_HAT0X, wdata->ir->absbit);
 757        set_bit(ABS_HAT0Y, wdata->ir->absbit);
 758        set_bit(ABS_HAT1X, wdata->ir->absbit);
 759        set_bit(ABS_HAT1Y, wdata->ir->absbit);
 760        set_bit(ABS_HAT2X, wdata->ir->absbit);
 761        set_bit(ABS_HAT2Y, wdata->ir->absbit);
 762        set_bit(ABS_HAT3X, wdata->ir->absbit);
 763        set_bit(ABS_HAT3Y, wdata->ir->absbit);
 764        input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 765        input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 766        input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 767        input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 768        input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 769        input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 770        input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 771        input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 772
 773        ret = input_register_device(wdata->ir);
 774        if (ret) {
 775                hid_err(wdata->hdev, "cannot register input device\n");
 776                goto err_free;
 777        }
 778
 779        return 0;
 780
 781err_free:
 782        input_free_device(wdata->ir);
 783        wdata->ir = NULL;
 784        return ret;
 785}
 786
 787static void wiimod_ir_remove(const struct wiimod_ops *ops,
 788                             struct wiimote_data *wdata)
 789{
 790        if (!wdata->ir)
 791                return;
 792
 793        input_unregister_device(wdata->ir);
 794        wdata->ir = NULL;
 795}
 796
 797static const struct wiimod_ops wiimod_ir = {
 798        .flags = 0,
 799        .arg = 0,
 800        .probe = wiimod_ir_probe,
 801        .remove = wiimod_ir_remove,
 802        .in_ir = wiimod_ir_in_ir,
 803};
 804
 805/*
 806 * Nunchuk Extension
 807 * The Nintendo Wii Nunchuk was the first official extension published by
 808 * Nintendo. It provides two additional keys and a separate accelerometer. It
 809 * can be hotplugged to standard Wii Remotes.
 810 */
 811
 812enum wiimod_nunchuk_keys {
 813        WIIMOD_NUNCHUK_KEY_C,
 814        WIIMOD_NUNCHUK_KEY_Z,
 815        WIIMOD_NUNCHUK_KEY_NUM,
 816};
 817
 818static const __u16 wiimod_nunchuk_map[] = {
 819        BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 820        BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 821};
 822
 823static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 824{
 825        __s16 x, y, z, bx, by;
 826
 827        /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 828         *   -----+----------+---------+---------+----+-----+
 829         *    1   |              Button X <7:0>             |
 830         *    2   |              Button Y <7:0>             |
 831         *   -----+----------+---------+---------+----+-----+
 832         *    3   |               Speed X <9:2>             |
 833         *    4   |               Speed Y <9:2>             |
 834         *    5   |               Speed Z <9:2>             |
 835         *   -----+----------+---------+---------+----+-----+
 836         *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 837         *   -----+----------+---------+---------+----+-----+
 838         * Button X/Y is the analog stick. Speed X, Y and Z are the
 839         * accelerometer data in the same format as the wiimote's accelerometer.
 840         * The 6th byte contains the LSBs of the accelerometer data.
 841         * BC and BZ are the C and Z buttons: 0 means pressed
 842         *
 843         * If reported interleaved with motionp, then the layout changes. The
 844         * 5th and 6th byte changes to:
 845         *   -----+-----------------------------------+-----+
 846         *    5   |            Speed Z <9:3>          | EXT |
 847         *   -----+--------+-----+-----+----+----+----+-----+
 848         *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 849         *   -----+--------+-----+-----+----+----+----+-----+
 850         * All three accelerometer values lose their LSB. The other data is
 851         * still available but slightly moved.
 852         *
 853         * Center data for button values is 128. Center value for accelerometer
 854         * values it 512 / 0x200
 855         */
 856
 857        bx = ext[0];
 858        by = ext[1];
 859        bx -= 128;
 860        by -= 128;
 861
 862        x = ext[2] << 2;
 863        y = ext[3] << 2;
 864        z = ext[4] << 2;
 865
 866        if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 867                x |= (ext[5] >> 3) & 0x02;
 868                y |= (ext[5] >> 4) & 0x02;
 869                z &= ~0x4;
 870                z |= (ext[5] >> 5) & 0x06;
 871        } else {
 872                x |= (ext[5] >> 2) & 0x03;
 873                y |= (ext[5] >> 4) & 0x03;
 874                z |= (ext[5] >> 6) & 0x03;
 875        }
 876
 877        x -= 0x200;
 878        y -= 0x200;
 879        z -= 0x200;
 880
 881        input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 882        input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 883
 884        input_report_abs(wdata->extension.input, ABS_RX, x);
 885        input_report_abs(wdata->extension.input, ABS_RY, y);
 886        input_report_abs(wdata->extension.input, ABS_RZ, z);
 887
 888        if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 889                input_report_key(wdata->extension.input,
 890                        wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 891                        !(ext[5] & 0x04));
 892                input_report_key(wdata->extension.input,
 893                        wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 894                        !(ext[5] & 0x08));
 895        } else {
 896                input_report_key(wdata->extension.input,
 897                        wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 898                        !(ext[5] & 0x01));
 899                input_report_key(wdata->extension.input,
 900                        wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 901                        !(ext[5] & 0x02));
 902        }
 903
 904        input_sync(wdata->extension.input);
 905}
 906
 907static int wiimod_nunchuk_open(struct input_dev *dev)
 908{
 909        struct wiimote_data *wdata = input_get_drvdata(dev);
 910        unsigned long flags;
 911
 912        spin_lock_irqsave(&wdata->state.lock, flags);
 913        wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 914        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 915        spin_unlock_irqrestore(&wdata->state.lock, flags);
 916
 917        return 0;
 918}
 919
 920static void wiimod_nunchuk_close(struct input_dev *dev)
 921{
 922        struct wiimote_data *wdata = input_get_drvdata(dev);
 923        unsigned long flags;
 924
 925        spin_lock_irqsave(&wdata->state.lock, flags);
 926        wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 927        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 928        spin_unlock_irqrestore(&wdata->state.lock, flags);
 929}
 930
 931static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 932                                struct wiimote_data *wdata)
 933{
 934        int ret, i;
 935
 936        wdata->extension.input = input_allocate_device();
 937        if (!wdata->extension.input)
 938                return -ENOMEM;
 939
 940        input_set_drvdata(wdata->extension.input, wdata);
 941        wdata->extension.input->open = wiimod_nunchuk_open;
 942        wdata->extension.input->close = wiimod_nunchuk_close;
 943        wdata->extension.input->dev.parent = &wdata->hdev->dev;
 944        wdata->extension.input->id.bustype = wdata->hdev->bus;
 945        wdata->extension.input->id.vendor = wdata->hdev->vendor;
 946        wdata->extension.input->id.product = wdata->hdev->product;
 947        wdata->extension.input->id.version = wdata->hdev->version;
 948        wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 949
 950        set_bit(EV_KEY, wdata->extension.input->evbit);
 951        for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 952                set_bit(wiimod_nunchuk_map[i],
 953                        wdata->extension.input->keybit);
 954
 955        set_bit(EV_ABS, wdata->extension.input->evbit);
 956        set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 957        set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 958        input_set_abs_params(wdata->extension.input,
 959                             ABS_HAT0X, -120, 120, 2, 4);
 960        input_set_abs_params(wdata->extension.input,
 961                             ABS_HAT0Y, -120, 120, 2, 4);
 962        set_bit(ABS_RX, wdata->extension.input->absbit);
 963        set_bit(ABS_RY, wdata->extension.input->absbit);
 964        set_bit(ABS_RZ, wdata->extension.input->absbit);
 965        input_set_abs_params(wdata->extension.input,
 966                             ABS_RX, -500, 500, 2, 4);
 967        input_set_abs_params(wdata->extension.input,
 968                             ABS_RY, -500, 500, 2, 4);
 969        input_set_abs_params(wdata->extension.input,
 970                             ABS_RZ, -500, 500, 2, 4);
 971
 972        ret = input_register_device(wdata->extension.input);
 973        if (ret)
 974                goto err_free;
 975
 976        return 0;
 977
 978err_free:
 979        input_free_device(wdata->extension.input);
 980        wdata->extension.input = NULL;
 981        return ret;
 982}
 983
 984static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 985                                  struct wiimote_data *wdata)
 986{
 987        if (!wdata->extension.input)
 988                return;
 989
 990        input_unregister_device(wdata->extension.input);
 991        wdata->extension.input = NULL;
 992}
 993
 994static const struct wiimod_ops wiimod_nunchuk = {
 995        .flags = 0,
 996        .arg = 0,
 997        .probe = wiimod_nunchuk_probe,
 998        .remove = wiimod_nunchuk_remove,
 999        .in_ext = wiimod_nunchuk_in_ext,
1000};
1001
1002/*
1003 * Classic Controller
1004 * Another official extension from Nintendo. It provides a classic
1005 * gamecube-like controller that can be hotplugged on the Wii Remote.
1006 * It has several hardware buttons and switches that are all reported via
1007 * a normal extension device.
1008 */
1009
1010enum wiimod_classic_keys {
1011        WIIMOD_CLASSIC_KEY_A,
1012        WIIMOD_CLASSIC_KEY_B,
1013        WIIMOD_CLASSIC_KEY_X,
1014        WIIMOD_CLASSIC_KEY_Y,
1015        WIIMOD_CLASSIC_KEY_ZL,
1016        WIIMOD_CLASSIC_KEY_ZR,
1017        WIIMOD_CLASSIC_KEY_PLUS,
1018        WIIMOD_CLASSIC_KEY_MINUS,
1019        WIIMOD_CLASSIC_KEY_HOME,
1020        WIIMOD_CLASSIC_KEY_LEFT,
1021        WIIMOD_CLASSIC_KEY_RIGHT,
1022        WIIMOD_CLASSIC_KEY_UP,
1023        WIIMOD_CLASSIC_KEY_DOWN,
1024        WIIMOD_CLASSIC_KEY_LT,
1025        WIIMOD_CLASSIC_KEY_RT,
1026        WIIMOD_CLASSIC_KEY_NUM,
1027};
1028
1029static const __u16 wiimod_classic_map[] = {
1030        BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1031        BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1032        BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1033        BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1034        BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1035        BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1036        KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1037        KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1038        BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1039        KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1040        KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1041        KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1042        KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1043        BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1044        BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1045};
1046
1047static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1048{
1049        __s8 rx, ry, lx, ly, lt, rt;
1050
1051        /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1052         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1053         *    1   | RX <5:4>  |              LX <5:0>             |
1054         *    2   | RX <3:2>  |              LY <5:0>             |
1055         *   -----+-----+-----+-----+-----------------------------+
1056         *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1057         *   -----+-----+-----------+-----------------------------+
1058         *    4   |     LT <3:1>    |         RT <5:1>            |
1059         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1060         *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1061         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1062         *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1063         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1064         * All buttons are 0 if pressed
1065         * RX and RY are right analog stick
1066         * LX and LY are left analog stick
1067         * LT is left trigger, RT is right trigger
1068         * BLT is 0 if left trigger is fully pressed
1069         * BRT is 0 if right trigger is fully pressed
1070         * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1071         * BZL is left Z button and BZR is right Z button
1072         * B-, BH, B+ are +, HOME and - buttons
1073         * BB, BY, BA, BX are A, B, X, Y buttons
1074         * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1075         *
1076         * With motionp enabled it changes slightly to this:
1077         *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1078         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1079         *    1   | RX <5:4>  |          LX <5:1>           | BDU |
1080         *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1081         *   -----+-----+-----+-----+-----------------------+-----+
1082         *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1083         *   -----+-----+-----------+-----------------------------+
1084         *    4   |     LT <3:1>    |         RT <5:1>            |
1085         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1086         *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1087         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1088         *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1089         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1090         * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1091         * is the same as before.
1092         */
1093
1094        if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1095                lx = ext[0] & 0x3e;
1096                ly = ext[1] & 0x3e;
1097        } else {
1098                lx = ext[0] & 0x3f;
1099                ly = ext[1] & 0x3f;
1100        }
1101
1102        rx = (ext[0] >> 3) & 0x18;
1103        rx |= (ext[1] >> 5) & 0x06;
1104        rx |= (ext[2] >> 7) & 0x01;
1105        ry = ext[2] & 0x1f;
1106
1107        rt = ext[3] & 0x1f;
1108        lt = (ext[2] >> 2) & 0x18;
1109        lt |= (ext[3] >> 5) & 0x07;
1110
1111        rx <<= 1;
1112        ry <<= 1;
1113        rt <<= 1;
1114        lt <<= 1;
1115
1116        input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
1117        input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
1118        input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1119        input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1120        input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
1121        input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1122
1123        input_report_key(wdata->extension.input,
1124                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1125                         !(ext[4] & 0x80));
1126        input_report_key(wdata->extension.input,
1127                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1128                         !(ext[4] & 0x40));
1129        input_report_key(wdata->extension.input,
1130                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1131                         !(ext[4] & 0x20));
1132        input_report_key(wdata->extension.input,
1133                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1134                         !(ext[4] & 0x10));
1135        input_report_key(wdata->extension.input,
1136                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1137                         !(ext[4] & 0x08));
1138        input_report_key(wdata->extension.input,
1139                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1140                         !(ext[4] & 0x04));
1141        input_report_key(wdata->extension.input,
1142                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1143                         !(ext[4] & 0x02));
1144        input_report_key(wdata->extension.input,
1145                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1146                         !(ext[5] & 0x80));
1147        input_report_key(wdata->extension.input,
1148                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1149                         !(ext[5] & 0x40));
1150        input_report_key(wdata->extension.input,
1151                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1152                         !(ext[5] & 0x20));
1153        input_report_key(wdata->extension.input,
1154                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1155                         !(ext[5] & 0x10));
1156        input_report_key(wdata->extension.input,
1157                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1158                         !(ext[5] & 0x08));
1159        input_report_key(wdata->extension.input,
1160                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1161                         !(ext[5] & 0x04));
1162
1163        if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1164                input_report_key(wdata->extension.input,
1165                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1166                         !(ext[1] & 0x01));
1167                input_report_key(wdata->extension.input,
1168                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1169                         !(ext[0] & 0x01));
1170        } else {
1171                input_report_key(wdata->extension.input,
1172                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1173                         !(ext[5] & 0x02));
1174                input_report_key(wdata->extension.input,
1175                         wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1176                         !(ext[5] & 0x01));
1177        }
1178
1179        input_sync(wdata->extension.input);
1180}
1181
1182static int wiimod_classic_open(struct input_dev *dev)
1183{
1184        struct wiimote_data *wdata = input_get_drvdata(dev);
1185        unsigned long flags;
1186
1187        spin_lock_irqsave(&wdata->state.lock, flags);
1188        wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1189        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1190        spin_unlock_irqrestore(&wdata->state.lock, flags);
1191
1192        return 0;
1193}
1194
1195static void wiimod_classic_close(struct input_dev *dev)
1196{
1197        struct wiimote_data *wdata = input_get_drvdata(dev);
1198        unsigned long flags;
1199
1200        spin_lock_irqsave(&wdata->state.lock, flags);
1201        wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1202        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1203        spin_unlock_irqrestore(&wdata->state.lock, flags);
1204}
1205
1206static int wiimod_classic_probe(const struct wiimod_ops *ops,
1207                                struct wiimote_data *wdata)
1208{
1209        int ret, i;
1210
1211        wdata->extension.input = input_allocate_device();
1212        if (!wdata->extension.input)
1213                return -ENOMEM;
1214
1215        input_set_drvdata(wdata->extension.input, wdata);
1216        wdata->extension.input->open = wiimod_classic_open;
1217        wdata->extension.input->close = wiimod_classic_close;
1218        wdata->extension.input->dev.parent = &wdata->hdev->dev;
1219        wdata->extension.input->id.bustype = wdata->hdev->bus;
1220        wdata->extension.input->id.vendor = wdata->hdev->vendor;
1221        wdata->extension.input->id.product = wdata->hdev->product;
1222        wdata->extension.input->id.version = wdata->hdev->version;
1223        wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1224
1225        set_bit(EV_KEY, wdata->extension.input->evbit);
1226        for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1227                set_bit(wiimod_classic_map[i],
1228                        wdata->extension.input->keybit);
1229
1230        set_bit(EV_ABS, wdata->extension.input->evbit);
1231        set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1232        set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1233        set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1234        set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1235        set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1236        set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1237        input_set_abs_params(wdata->extension.input,
1238                             ABS_HAT1X, -30, 30, 1, 1);
1239        input_set_abs_params(wdata->extension.input,
1240                             ABS_HAT1Y, -30, 30, 1, 1);
1241        input_set_abs_params(wdata->extension.input,
1242                             ABS_HAT2X, -30, 30, 1, 1);
1243        input_set_abs_params(wdata->extension.input,
1244                             ABS_HAT2Y, -30, 30, 1, 1);
1245        input_set_abs_params(wdata->extension.input,
1246                             ABS_HAT3X, -30, 30, 1, 1);
1247        input_set_abs_params(wdata->extension.input,
1248                             ABS_HAT3Y, -30, 30, 1, 1);
1249
1250        ret = input_register_device(wdata->extension.input);
1251        if (ret)
1252                goto err_free;
1253
1254        return 0;
1255
1256err_free:
1257        input_free_device(wdata->extension.input);
1258        wdata->extension.input = NULL;
1259        return ret;
1260}
1261
1262static void wiimod_classic_remove(const struct wiimod_ops *ops,
1263                                  struct wiimote_data *wdata)
1264{
1265        if (!wdata->extension.input)
1266                return;
1267
1268        input_unregister_device(wdata->extension.input);
1269        wdata->extension.input = NULL;
1270}
1271
1272static const struct wiimod_ops wiimod_classic = {
1273        .flags = 0,
1274        .arg = 0,
1275        .probe = wiimod_classic_probe,
1276        .remove = wiimod_classic_remove,
1277        .in_ext = wiimod_classic_in_ext,
1278};
1279
1280/*
1281 * Balance Board Extension
1282 * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1283 * single push button. No other peripherals are available. However, the
1284 * balance-board data is sent via a standard Wii Remote extension. All other
1285 * data for non-present hardware is zeroed out.
1286 * Some 3rd party devices react allergic if we try to access normal Wii Remote
1287 * hardware, so this extension module should be the only module that is loaded
1288 * on balance boards.
1289 * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1290 * it needs the WIIMOD_FLAG_EXT8 flag.
1291 */
1292
1293static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1294{
1295        input_report_key(wdata->extension.input, BTN_A,
1296                         !!(keys[1] & 0x08));
1297        input_sync(wdata->extension.input);
1298}
1299
1300static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1301                                 const __u8 *ext)
1302{
1303        __s32 val[4], tmp, div;
1304        unsigned int i;
1305        struct wiimote_state *s = &wdata->state;
1306
1307        /*
1308         * Balance board data layout:
1309         *
1310         *   Byte |  8  7  6  5  4  3  2  1  |
1311         *   -----+--------------------------+
1312         *    1   |    Top Right <15:8>      |
1313         *    2   |    Top Right  <7:0>      |
1314         *   -----+--------------------------+
1315         *    3   | Bottom Right <15:8>      |
1316         *    4   | Bottom Right  <7:0>      |
1317         *   -----+--------------------------+
1318         *    5   |     Top Left <15:8>      |
1319         *    6   |     Top Left  <7:0>      |
1320         *   -----+--------------------------+
1321         *    7   |  Bottom Left <15:8>      |
1322         *    8   |  Bottom Left  <7:0>      |
1323         *   -----+--------------------------+
1324         *
1325         * These values represent the weight-measurements of the Wii-balance
1326         * board with 16bit precision.
1327         *
1328         * The balance-board is never reported interleaved with motionp.
1329         */
1330
1331        val[0] = ext[0];
1332        val[0] <<= 8;
1333        val[0] |= ext[1];
1334
1335        val[1] = ext[2];
1336        val[1] <<= 8;
1337        val[1] |= ext[3];
1338
1339        val[2] = ext[4];
1340        val[2] <<= 8;
1341        val[2] |= ext[5];
1342
1343        val[3] = ext[6];
1344        val[3] <<= 8;
1345        val[3] |= ext[7];
1346
1347        /* apply calibration data */
1348        for (i = 0; i < 4; i++) {
1349                if (val[i] <= s->calib_bboard[i][0]) {
1350                        tmp = 0;
1351                } else if (val[i] < s->calib_bboard[i][1]) {
1352                        tmp = val[i] - s->calib_bboard[i][0];
1353                        tmp *= 1700;
1354                        div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1355                        tmp /= div ? div : 1;
1356                } else {
1357                        tmp = val[i] - s->calib_bboard[i][1];
1358                        tmp *= 1700;
1359                        div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1360                        tmp /= div ? div : 1;
1361                        tmp += 1700;
1362                }
1363                val[i] = tmp;
1364        }
1365
1366        input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1367        input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1368        input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1369        input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1370        input_sync(wdata->extension.input);
1371}
1372
1373static int wiimod_bboard_open(struct input_dev *dev)
1374{
1375        struct wiimote_data *wdata = input_get_drvdata(dev);
1376        unsigned long flags;
1377
1378        spin_lock_irqsave(&wdata->state.lock, flags);
1379        wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1380        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1381        spin_unlock_irqrestore(&wdata->state.lock, flags);
1382
1383        return 0;
1384}
1385
1386static void wiimod_bboard_close(struct input_dev *dev)
1387{
1388        struct wiimote_data *wdata = input_get_drvdata(dev);
1389        unsigned long flags;
1390
1391        spin_lock_irqsave(&wdata->state.lock, flags);
1392        wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1393        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1394        spin_unlock_irqrestore(&wdata->state.lock, flags);
1395}
1396
1397static ssize_t wiimod_bboard_calib_show(struct device *dev,
1398                                        struct device_attribute *attr,
1399                                        char *out)
1400{
1401        struct wiimote_data *wdata = dev_to_wii(dev);
1402        int i, j, ret;
1403        __u16 val;
1404        __u8 buf[24], offs;
1405
1406        ret = wiimote_cmd_acquire(wdata);
1407        if (ret)
1408                return ret;
1409
1410        ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1411        if (ret != 12) {
1412                wiimote_cmd_release(wdata);
1413                return ret < 0 ? ret : -EIO;
1414        }
1415        ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1416        if (ret != 12) {
1417                wiimote_cmd_release(wdata);
1418                return ret < 0 ? ret : -EIO;
1419        }
1420
1421        wiimote_cmd_release(wdata);
1422
1423        spin_lock_irq(&wdata->state.lock);
1424        offs = 0;
1425        for (i = 0; i < 3; ++i) {
1426                for (j = 0; j < 4; ++j) {
1427                        wdata->state.calib_bboard[j][i] = buf[offs];
1428                        wdata->state.calib_bboard[j][i] <<= 8;
1429                        wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1430                        offs += 2;
1431                }
1432        }
1433        spin_unlock_irq(&wdata->state.lock);
1434
1435        ret = 0;
1436        for (i = 0; i < 3; ++i) {
1437                for (j = 0; j < 4; ++j) {
1438                        val = wdata->state.calib_bboard[j][i];
1439                        if (i == 2 && j == 3)
1440                                ret += sprintf(&out[ret], "%04x\n", val);
1441                        else
1442                                ret += sprintf(&out[ret], "%04x:", val);
1443                }
1444        }
1445
1446        return ret;
1447}
1448
1449static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1450
1451static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1452                               struct wiimote_data *wdata)
1453{
1454        int ret, i, j;
1455        __u8 buf[24], offs;
1456
1457        wiimote_cmd_acquire_noint(wdata);
1458
1459        ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1460        if (ret != 12) {
1461                wiimote_cmd_release(wdata);
1462                return ret < 0 ? ret : -EIO;
1463        }
1464        ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1465        if (ret != 12) {
1466                wiimote_cmd_release(wdata);
1467                return ret < 0 ? ret : -EIO;
1468        }
1469
1470        wiimote_cmd_release(wdata);
1471
1472        offs = 0;
1473        for (i = 0; i < 3; ++i) {
1474                for (j = 0; j < 4; ++j) {
1475                        wdata->state.calib_bboard[j][i] = buf[offs];
1476                        wdata->state.calib_bboard[j][i] <<= 8;
1477                        wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1478                        offs += 2;
1479                }
1480        }
1481
1482        wdata->extension.input = input_allocate_device();
1483        if (!wdata->extension.input)
1484                return -ENOMEM;
1485
1486        ret = device_create_file(&wdata->hdev->dev,
1487                                 &dev_attr_bboard_calib);
1488        if (ret) {
1489                hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1490                goto err_free;
1491        }
1492
1493        input_set_drvdata(wdata->extension.input, wdata);
1494        wdata->extension.input->open = wiimod_bboard_open;
1495        wdata->extension.input->close = wiimod_bboard_close;
1496        wdata->extension.input->dev.parent = &wdata->hdev->dev;
1497        wdata->extension.input->id.bustype = wdata->hdev->bus;
1498        wdata->extension.input->id.vendor = wdata->hdev->vendor;
1499        wdata->extension.input->id.product = wdata->hdev->product;
1500        wdata->extension.input->id.version = wdata->hdev->version;
1501        wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1502
1503        set_bit(EV_KEY, wdata->extension.input->evbit);
1504        set_bit(BTN_A, wdata->extension.input->keybit);
1505
1506        set_bit(EV_ABS, wdata->extension.input->evbit);
1507        set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1508        set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1509        set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1510        set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1511        input_set_abs_params(wdata->extension.input,
1512                             ABS_HAT0X, 0, 65535, 2, 4);
1513        input_set_abs_params(wdata->extension.input,
1514                             ABS_HAT0Y, 0, 65535, 2, 4);
1515        input_set_abs_params(wdata->extension.input,
1516                             ABS_HAT1X, 0, 65535, 2, 4);
1517        input_set_abs_params(wdata->extension.input,
1518                             ABS_HAT1Y, 0, 65535, 2, 4);
1519
1520        ret = input_register_device(wdata->extension.input);
1521        if (ret)
1522                goto err_file;
1523
1524        return 0;
1525
1526err_file:
1527        device_remove_file(&wdata->hdev->dev,
1528                           &dev_attr_bboard_calib);
1529err_free:
1530        input_free_device(wdata->extension.input);
1531        wdata->extension.input = NULL;
1532        return ret;
1533}
1534
1535static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1536                                 struct wiimote_data *wdata)
1537{
1538        if (!wdata->extension.input)
1539                return;
1540
1541        input_unregister_device(wdata->extension.input);
1542        wdata->extension.input = NULL;
1543        device_remove_file(&wdata->hdev->dev,
1544                           &dev_attr_bboard_calib);
1545}
1546
1547static const struct wiimod_ops wiimod_bboard = {
1548        .flags = WIIMOD_FLAG_EXT8,
1549        .arg = 0,
1550        .probe = wiimod_bboard_probe,
1551        .remove = wiimod_bboard_remove,
1552        .in_keys = wiimod_bboard_in_keys,
1553        .in_ext = wiimod_bboard_in_ext,
1554};
1555
1556/*
1557 * Pro Controller
1558 * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1559 * work together with the classic Wii, but only with the new Wii U. However, it
1560 * uses the same protocol and provides a builtin "classic controller pro"
1561 * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1562 * We provide all these via a standard extension device as the device doesn't
1563 * feature an extension port.
1564 */
1565
1566enum wiimod_pro_keys {
1567        WIIMOD_PRO_KEY_A,
1568        WIIMOD_PRO_KEY_B,
1569        WIIMOD_PRO_KEY_X,
1570        WIIMOD_PRO_KEY_Y,
1571        WIIMOD_PRO_KEY_PLUS,
1572        WIIMOD_PRO_KEY_MINUS,
1573        WIIMOD_PRO_KEY_HOME,
1574        WIIMOD_PRO_KEY_LEFT,
1575        WIIMOD_PRO_KEY_RIGHT,
1576        WIIMOD_PRO_KEY_UP,
1577        WIIMOD_PRO_KEY_DOWN,
1578        WIIMOD_PRO_KEY_TL,
1579        WIIMOD_PRO_KEY_TR,
1580        WIIMOD_PRO_KEY_ZL,
1581        WIIMOD_PRO_KEY_ZR,
1582        WIIMOD_PRO_KEY_THUMBL,
1583        WIIMOD_PRO_KEY_THUMBR,
1584        WIIMOD_PRO_KEY_NUM,
1585};
1586
1587static const __u16 wiimod_pro_map[] = {
1588        BTN_EAST,       /* WIIMOD_PRO_KEY_A */
1589        BTN_SOUTH,      /* WIIMOD_PRO_KEY_B */
1590        BTN_NORTH,      /* WIIMOD_PRO_KEY_X */
1591        BTN_WEST,       /* WIIMOD_PRO_KEY_Y */
1592        BTN_START,      /* WIIMOD_PRO_KEY_PLUS */
1593        BTN_SELECT,     /* WIIMOD_PRO_KEY_MINUS */
1594        BTN_MODE,       /* WIIMOD_PRO_KEY_HOME */
1595        BTN_DPAD_LEFT,  /* WIIMOD_PRO_KEY_LEFT */
1596        BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1597        BTN_DPAD_UP,    /* WIIMOD_PRO_KEY_UP */
1598        BTN_DPAD_DOWN,  /* WIIMOD_PRO_KEY_DOWN */
1599        BTN_TL,         /* WIIMOD_PRO_KEY_TL */
1600        BTN_TR,         /* WIIMOD_PRO_KEY_TR */
1601        BTN_TL2,        /* WIIMOD_PRO_KEY_ZL */
1602        BTN_TR2,        /* WIIMOD_PRO_KEY_ZR */
1603        BTN_THUMBL,     /* WIIMOD_PRO_KEY_THUMBL */
1604        BTN_THUMBR,     /* WIIMOD_PRO_KEY_THUMBR */
1605};
1606
1607static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1608{
1609        __s16 rx, ry, lx, ly;
1610
1611        /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1612         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1613         *    1   |                   LX <7:0>                    |
1614         *   -----+-----------------------+-----------------------+
1615         *    2   |  0     0     0     0  |       LX <11:8>       |
1616         *   -----+-----------------------+-----------------------+
1617         *    3   |                   RX <7:0>                    |
1618         *   -----+-----------------------+-----------------------+
1619         *    4   |  0     0     0     0  |       RX <11:8>       |
1620         *   -----+-----------------------+-----------------------+
1621         *    5   |                   LY <7:0>                    |
1622         *   -----+-----------------------+-----------------------+
1623         *    6   |  0     0     0     0  |       LY <11:8>       |
1624         *   -----+-----------------------+-----------------------+
1625         *    7   |                   RY <7:0>                    |
1626         *   -----+-----------------------+-----------------------+
1627         *    8   |  0     0     0     0  |       RY <11:8>       |
1628         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1629         *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1630         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1631         *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1632         *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1633         *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
1634         *   -----+-----+-----------------+-----------+-----+-----+
1635         * All buttons are low-active (0 if pressed)
1636         * RX and RY are right analog stick
1637         * LX and LY are left analog stick
1638         * BLT is left trigger, BRT is right trigger.
1639         * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1640         * BZL is left Z button and BZR is right Z button
1641         * B-, BH, B+ are +, HOME and - buttons
1642         * BB, BY, BA, BX are A, B, X, Y buttons
1643         *
1644         * Bits marked as 0/1 are unknown and never changed during tests.
1645         *
1646         * Not entirely verified:
1647         *   CHARG: 1 if uncharging, 0 if charging
1648         *   USB: 1 if not connected, 0 if connected
1649         *   BATTERY: battery capacity from 000 (empty) to 100 (full)
1650         */
1651
1652        lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1653        rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1654        ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1655        ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1656
1657        /* zero-point offsets */
1658        lx -= 0x800;
1659        ly = 0x800 - ly;
1660        rx -= 0x800;
1661        ry = 0x800 - ry;
1662
1663        /* Trivial automatic calibration. We don't know any calibration data
1664         * in the EEPROM so we must use the first report to calibrate the
1665         * null-position of the analog sticks. Users can retrigger calibration
1666         * via sysfs, or set it explicitly. If data is off more than abs(500),
1667         * we skip calibration as the sticks are likely to be moved already. */
1668        if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1669                wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1670                if (abs(lx) < 500)
1671                        wdata->state.calib_pro_sticks[0] = -lx;
1672                if (abs(ly) < 500)
1673                        wdata->state.calib_pro_sticks[1] = -ly;
1674                if (abs(rx) < 500)
1675                        wdata->state.calib_pro_sticks[2] = -rx;
1676                if (abs(ry) < 500)
1677                        wdata->state.calib_pro_sticks[3] = -ry;
1678        }
1679
1680        /* apply calibration data */
1681        lx += wdata->state.calib_pro_sticks[0];
1682        ly += wdata->state.calib_pro_sticks[1];
1683        rx += wdata->state.calib_pro_sticks[2];
1684        ry += wdata->state.calib_pro_sticks[3];
1685
1686        input_report_abs(wdata->extension.input, ABS_X, lx);
1687        input_report_abs(wdata->extension.input, ABS_Y, ly);
1688        input_report_abs(wdata->extension.input, ABS_RX, rx);
1689        input_report_abs(wdata->extension.input, ABS_RY, ry);
1690
1691        input_report_key(wdata->extension.input,
1692                         wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1693                         !(ext[8] & 0x80));
1694        input_report_key(wdata->extension.input,
1695                         wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1696                         !(ext[8] & 0x40));
1697        input_report_key(wdata->extension.input,
1698                         wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1699                         !(ext[8] & 0x20));
1700        input_report_key(wdata->extension.input,
1701                         wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1702                         !(ext[8] & 0x10));
1703        input_report_key(wdata->extension.input,
1704                         wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1705                         !(ext[8] & 0x08));
1706        input_report_key(wdata->extension.input,
1707                         wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1708                         !(ext[8] & 0x04));
1709        input_report_key(wdata->extension.input,
1710                         wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1711                         !(ext[8] & 0x02));
1712
1713        input_report_key(wdata->extension.input,
1714                         wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1715                         !(ext[9] & 0x80));
1716        input_report_key(wdata->extension.input,
1717                         wiimod_pro_map[WIIMOD_PRO_KEY_B],
1718                         !(ext[9] & 0x40));
1719        input_report_key(wdata->extension.input,
1720                         wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1721                         !(ext[9] & 0x20));
1722        input_report_key(wdata->extension.input,
1723                         wiimod_pro_map[WIIMOD_PRO_KEY_A],
1724                         !(ext[9] & 0x10));
1725        input_report_key(wdata->extension.input,
1726                         wiimod_pro_map[WIIMOD_PRO_KEY_X],
1727                         !(ext[9] & 0x08));
1728        input_report_key(wdata->extension.input,
1729                         wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1730                         !(ext[9] & 0x04));
1731        input_report_key(wdata->extension.input,
1732                         wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1733                         !(ext[9] & 0x02));
1734        input_report_key(wdata->extension.input,
1735                         wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1736                         !(ext[9] & 0x01));
1737
1738        input_report_key(wdata->extension.input,
1739                         wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1740                         !(ext[10] & 0x02));
1741        input_report_key(wdata->extension.input,
1742                         wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1743                         !(ext[10] & 0x01));
1744
1745        input_sync(wdata->extension.input);
1746}
1747
1748static int wiimod_pro_open(struct input_dev *dev)
1749{
1750        struct wiimote_data *wdata = input_get_drvdata(dev);
1751        unsigned long flags;
1752
1753        spin_lock_irqsave(&wdata->state.lock, flags);
1754        wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1755        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1756        spin_unlock_irqrestore(&wdata->state.lock, flags);
1757
1758        return 0;
1759}
1760
1761static void wiimod_pro_close(struct input_dev *dev)
1762{
1763        struct wiimote_data *wdata = input_get_drvdata(dev);
1764        unsigned long flags;
1765
1766        spin_lock_irqsave(&wdata->state.lock, flags);
1767        wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1768        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1769        spin_unlock_irqrestore(&wdata->state.lock, flags);
1770}
1771
1772static int wiimod_pro_play(struct input_dev *dev, void *data,
1773                           struct ff_effect *eff)
1774{
1775        struct wiimote_data *wdata = input_get_drvdata(dev);
1776        __u8 value;
1777
1778        /*
1779         * The wiimote supports only a single rumble motor so if any magnitude
1780         * is set to non-zero then we start the rumble motor. If both are set to
1781         * zero, we stop the rumble motor.
1782         */
1783
1784        if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1785                value = 1;
1786        else
1787                value = 0;
1788
1789        /* Locking state.lock here might deadlock with input_event() calls.
1790         * schedule_work acts as barrier. Merging multiple changes is fine. */
1791        wdata->state.cache_rumble = value;
1792        schedule_work(&wdata->rumble_worker);
1793
1794        return 0;
1795}
1796
1797static ssize_t wiimod_pro_calib_show(struct device *dev,
1798                                     struct device_attribute *attr,
1799                                     char *out)
1800{
1801        struct wiimote_data *wdata = dev_to_wii(dev);
1802        int r;
1803
1804        r = 0;
1805        r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
1806        r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
1807        r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
1808        r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1809
1810        return r;
1811}
1812
1813static ssize_t wiimod_pro_calib_store(struct device *dev,
1814                                      struct device_attribute *attr,
1815                                      const char *buf, size_t count)
1816{
1817        struct wiimote_data *wdata = dev_to_wii(dev);
1818        int r;
1819        s16 x1, y1, x2, y2;
1820
1821        if (!strncmp(buf, "scan\n", 5)) {
1822                spin_lock_irq(&wdata->state.lock);
1823                wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1824                spin_unlock_irq(&wdata->state.lock);
1825        } else {
1826                r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1827                if (r != 4)
1828                        return -EINVAL;
1829
1830                spin_lock_irq(&wdata->state.lock);
1831                wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1832                spin_unlock_irq(&wdata->state.lock);
1833
1834                wdata->state.calib_pro_sticks[0] = x1;
1835                wdata->state.calib_pro_sticks[1] = y1;
1836                wdata->state.calib_pro_sticks[2] = x2;
1837                wdata->state.calib_pro_sticks[3] = y2;
1838        }
1839
1840        return strnlen(buf, PAGE_SIZE);
1841}
1842
1843static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1844                   wiimod_pro_calib_store);
1845
1846static int wiimod_pro_probe(const struct wiimod_ops *ops,
1847                            struct wiimote_data *wdata)
1848{
1849        int ret, i;
1850        unsigned long flags;
1851
1852        INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1853        wdata->state.calib_pro_sticks[0] = 0;
1854        wdata->state.calib_pro_sticks[1] = 0;
1855        wdata->state.calib_pro_sticks[2] = 0;
1856        wdata->state.calib_pro_sticks[3] = 0;
1857
1858        spin_lock_irqsave(&wdata->state.lock, flags);
1859        wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1860        spin_unlock_irqrestore(&wdata->state.lock, flags);
1861
1862        wdata->extension.input = input_allocate_device();
1863        if (!wdata->extension.input)
1864                return -ENOMEM;
1865
1866        set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
1867        input_set_drvdata(wdata->extension.input, wdata);
1868
1869        if (input_ff_create_memless(wdata->extension.input, NULL,
1870                                    wiimod_pro_play)) {
1871                ret = -ENOMEM;
1872                goto err_free;
1873        }
1874
1875        ret = device_create_file(&wdata->hdev->dev,
1876                                 &dev_attr_pro_calib);
1877        if (ret) {
1878                hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1879                goto err_free;
1880        }
1881
1882        wdata->extension.input->open = wiimod_pro_open;
1883        wdata->extension.input->close = wiimod_pro_close;
1884        wdata->extension.input->dev.parent = &wdata->hdev->dev;
1885        wdata->extension.input->id.bustype = wdata->hdev->bus;
1886        wdata->extension.input->id.vendor = wdata->hdev->vendor;
1887        wdata->extension.input->id.product = wdata->hdev->product;
1888        wdata->extension.input->id.version = wdata->hdev->version;
1889        wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1890
1891        set_bit(EV_KEY, wdata->extension.input->evbit);
1892        for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1893                set_bit(wiimod_pro_map[i],
1894                        wdata->extension.input->keybit);
1895
1896        set_bit(EV_ABS, wdata->extension.input->evbit);
1897        set_bit(ABS_X, wdata->extension.input->absbit);
1898        set_bit(ABS_Y, wdata->extension.input->absbit);
1899        set_bit(ABS_RX, wdata->extension.input->absbit);
1900        set_bit(ABS_RY, wdata->extension.input->absbit);
1901        input_set_abs_params(wdata->extension.input,
1902                             ABS_X, -0x400, 0x400, 4, 100);
1903        input_set_abs_params(wdata->extension.input,
1904                             ABS_Y, -0x400, 0x400, 4, 100);
1905        input_set_abs_params(wdata->extension.input,
1906                             ABS_RX, -0x400, 0x400, 4, 100);
1907        input_set_abs_params(wdata->extension.input,
1908                             ABS_RY, -0x400, 0x400, 4, 100);
1909
1910        ret = input_register_device(wdata->extension.input);
1911        if (ret)
1912                goto err_file;
1913
1914        return 0;
1915
1916err_file:
1917        device_remove_file(&wdata->hdev->dev,
1918                           &dev_attr_pro_calib);
1919err_free:
1920        input_free_device(wdata->extension.input);
1921        wdata->extension.input = NULL;
1922        return ret;
1923}
1924
1925static void wiimod_pro_remove(const struct wiimod_ops *ops,
1926                              struct wiimote_data *wdata)
1927{
1928        unsigned long flags;
1929
1930        if (!wdata->extension.input)
1931                return;
1932
1933        input_unregister_device(wdata->extension.input);
1934        wdata->extension.input = NULL;
1935        cancel_work_sync(&wdata->rumble_worker);
1936        device_remove_file(&wdata->hdev->dev,
1937                           &dev_attr_pro_calib);
1938
1939        spin_lock_irqsave(&wdata->state.lock, flags);
1940        wiiproto_req_rumble(wdata, 0);
1941        spin_unlock_irqrestore(&wdata->state.lock, flags);
1942}
1943
1944static const struct wiimod_ops wiimod_pro = {
1945        .flags = WIIMOD_FLAG_EXT16,
1946        .arg = 0,
1947        .probe = wiimod_pro_probe,
1948        .remove = wiimod_pro_remove,
1949        .in_ext = wiimod_pro_in_ext,
1950};
1951
1952/*
1953 * Builtin Motion Plus
1954 * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
1955 * disables polling for Motion-Plus. This should be set only for devices which
1956 * don't allow MP hotplugging.
1957 */
1958
1959static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
1960                                   struct wiimote_data *wdata)
1961{
1962        unsigned long flags;
1963
1964        spin_lock_irqsave(&wdata->state.lock, flags);
1965        wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1966        spin_unlock_irqrestore(&wdata->state.lock, flags);
1967
1968        return 0;
1969}
1970
1971static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
1972                                     struct wiimote_data *wdata)
1973{
1974        unsigned long flags;
1975
1976        spin_lock_irqsave(&wdata->state.lock, flags);
1977        wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
1978        spin_unlock_irqrestore(&wdata->state.lock, flags);
1979}
1980
1981static const struct wiimod_ops wiimod_builtin_mp = {
1982        .flags = 0,
1983        .arg = 0,
1984        .probe = wiimod_builtin_mp_probe,
1985        .remove = wiimod_builtin_mp_remove,
1986};
1987
1988/*
1989 * No Motion Plus
1990 * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
1991 * disables motion-plus. This is needed for devices that advertise this but we
1992 * don't know how to use it (or whether it is actually present).
1993 */
1994
1995static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
1996                              struct wiimote_data *wdata)
1997{
1998        unsigned long flags;
1999
2000        spin_lock_irqsave(&wdata->state.lock, flags);
2001        wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2002        spin_unlock_irqrestore(&wdata->state.lock, flags);
2003
2004        return 0;
2005}
2006
2007static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2008                                struct wiimote_data *wdata)
2009{
2010        unsigned long flags;
2011
2012        spin_lock_irqsave(&wdata->state.lock, flags);
2013        wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2014        spin_unlock_irqrestore(&wdata->state.lock, flags);
2015}
2016
2017static const struct wiimod_ops wiimod_no_mp = {
2018        .flags = 0,
2019        .arg = 0,
2020        .probe = wiimod_no_mp_probe,
2021        .remove = wiimod_no_mp_remove,
2022};
2023
2024/*
2025 * Motion Plus
2026 * The Motion Plus extension provides rotation sensors (gyro) as a small
2027 * extension device for Wii Remotes. Many devices have them built-in so
2028 * you cannot see them from the outside.
2029 * Motion Plus extensions are special because they are on a separate extension
2030 * port and allow other extensions to be used simultaneously. This is all
2031 * handled by the Wiimote Core so we don't have to deal with it.
2032 */
2033
2034static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2035{
2036        __s32 x, y, z;
2037
2038        /*        |   8    7    6    5    4    3 |  2  |  1  |
2039         *   -----+------------------------------+-----+-----+
2040         *    1   |               Yaw Speed <7:0>            |
2041         *    2   |              Roll Speed <7:0>            |
2042         *    3   |             Pitch Speed <7:0>            |
2043         *   -----+------------------------------+-----+-----+
2044         *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
2045         *   -----+------------------------------+-----+-----+
2046         *    5   |      Roll Speed <13:8>       |Roll | Ext |
2047         *   -----+------------------------------+-----+-----+
2048         *    6   |     Pitch Speed <13:8>       |  1  |  0  |
2049         *   -----+------------------------------+-----+-----+
2050         * The single bits Yaw, Roll, Pitch in the lower right corner specify
2051         * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2052         * roation is 8192/440 units / deg/s and for fast rotation 8192/2000
2053         * units / deg/s. To get a linear scale for fast rotation we multiply
2054         * by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
2055         * previous scale reported by this driver.
2056         * This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2057         * If the wiimote is not rotating the sensor reports 2^13 = 8192.
2058         * Ext specifies whether an extension is connected to the motionp.
2059         * which is parsed by wiimote-core.
2060         */
2061
2062        x = ext[0];
2063        y = ext[1];
2064        z = ext[2];
2065
2066        x |= (((__u16)ext[3]) << 6) & 0xff00;
2067        y |= (((__u16)ext[4]) << 6) & 0xff00;
2068        z |= (((__u16)ext[5]) << 6) & 0xff00;
2069
2070        x -= 8192;
2071        y -= 8192;
2072        z -= 8192;
2073
2074        if (!(ext[3] & 0x02))
2075                x = (x * 2000 * 9) / 440;
2076        else
2077                x *= 9;
2078        if (!(ext[4] & 0x02))
2079                y = (y * 2000 * 9) / 440;
2080        else
2081                y *= 9;
2082        if (!(ext[3] & 0x01))
2083                z = (z * 2000 * 9) / 440;
2084        else
2085                z *= 9;
2086
2087        input_report_abs(wdata->mp, ABS_RX, x);
2088        input_report_abs(wdata->mp, ABS_RY, y);
2089        input_report_abs(wdata->mp, ABS_RZ, z);
2090        input_sync(wdata->mp);
2091}
2092
2093static int wiimod_mp_open(struct input_dev *dev)
2094{
2095        struct wiimote_data *wdata = input_get_drvdata(dev);
2096        unsigned long flags;
2097
2098        spin_lock_irqsave(&wdata->state.lock, flags);
2099        wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2100        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2101        __wiimote_schedule(wdata);
2102        spin_unlock_irqrestore(&wdata->state.lock, flags);
2103
2104        return 0;
2105}
2106
2107static void wiimod_mp_close(struct input_dev *dev)
2108{
2109        struct wiimote_data *wdata = input_get_drvdata(dev);
2110        unsigned long flags;
2111
2112        spin_lock_irqsave(&wdata->state.lock, flags);
2113        wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2114        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2115        __wiimote_schedule(wdata);
2116        spin_unlock_irqrestore(&wdata->state.lock, flags);
2117}
2118
2119static int wiimod_mp_probe(const struct wiimod_ops *ops,
2120                           struct wiimote_data *wdata)
2121{
2122        int ret;
2123
2124        wdata->mp = input_allocate_device();
2125        if (!wdata->mp)
2126                return -ENOMEM;
2127
2128        input_set_drvdata(wdata->mp, wdata);
2129        wdata->mp->open = wiimod_mp_open;
2130        wdata->mp->close = wiimod_mp_close;
2131        wdata->mp->dev.parent = &wdata->hdev->dev;
2132        wdata->mp->id.bustype = wdata->hdev->bus;
2133        wdata->mp->id.vendor = wdata->hdev->vendor;
2134        wdata->mp->id.product = wdata->hdev->product;
2135        wdata->mp->id.version = wdata->hdev->version;
2136        wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2137
2138        set_bit(EV_ABS, wdata->mp->evbit);
2139        set_bit(ABS_RX, wdata->mp->absbit);
2140        set_bit(ABS_RY, wdata->mp->absbit);
2141        set_bit(ABS_RZ, wdata->mp->absbit);
2142        input_set_abs_params(wdata->mp,
2143                             ABS_RX, -16000, 16000, 4, 8);
2144        input_set_abs_params(wdata->mp,
2145                             ABS_RY, -16000, 16000, 4, 8);
2146        input_set_abs_params(wdata->mp,
2147                             ABS_RZ, -16000, 16000, 4, 8);
2148
2149        ret = input_register_device(wdata->mp);
2150        if (ret)
2151                goto err_free;
2152
2153        return 0;
2154
2155err_free:
2156        input_free_device(wdata->mp);
2157        wdata->mp = NULL;
2158        return ret;
2159}
2160
2161static void wiimod_mp_remove(const struct wiimod_ops *ops,
2162                             struct wiimote_data *wdata)
2163{
2164        if (!wdata->mp)
2165                return;
2166
2167        input_unregister_device(wdata->mp);
2168        wdata->mp = NULL;
2169}
2170
2171const struct wiimod_ops wiimod_mp = {
2172        .flags = 0,
2173        .arg = 0,
2174        .probe = wiimod_mp_probe,
2175        .remove = wiimod_mp_remove,
2176        .in_mp = wiimod_mp_in_mp,
2177};
2178
2179/* module table */
2180
2181static const struct wiimod_ops wiimod_dummy;
2182
2183const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2184        [WIIMOD_KEYS] = &wiimod_keys,
2185        [WIIMOD_RUMBLE] = &wiimod_rumble,
2186        [WIIMOD_BATTERY] = &wiimod_battery,
2187        [WIIMOD_LED1] = &wiimod_leds[0],
2188        [WIIMOD_LED2] = &wiimod_leds[1],
2189        [WIIMOD_LED3] = &wiimod_leds[2],
2190        [WIIMOD_LED4] = &wiimod_leds[3],
2191        [WIIMOD_ACCEL] = &wiimod_accel,
2192        [WIIMOD_IR] = &wiimod_ir,
2193        [WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2194        [WIIMOD_NO_MP] = &wiimod_no_mp,
2195};
2196
2197const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2198        [WIIMOTE_EXT_NONE] = &wiimod_dummy,
2199        [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2200        [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2201        [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2202        [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2203        [WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2204};
2205