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