linux/drivers/hid/hid-wiimote-core.c
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   1/*
   2 * HID driver for Nintendo Wiimote devices
   3 * Copyright (c) 2011 David Herrmann
   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#include <linux/completion.h>
  14#include <linux/device.h>
  15#include <linux/hid.h>
  16#include <linux/input.h>
  17#include <linux/leds.h>
  18#include <linux/module.h>
  19#include <linux/mutex.h>
  20#include <linux/power_supply.h>
  21#include <linux/spinlock.h>
  22#include "hid-ids.h"
  23#include "hid-wiimote.h"
  24
  25enum wiiproto_keys {
  26        WIIPROTO_KEY_LEFT,
  27        WIIPROTO_KEY_RIGHT,
  28        WIIPROTO_KEY_UP,
  29        WIIPROTO_KEY_DOWN,
  30        WIIPROTO_KEY_PLUS,
  31        WIIPROTO_KEY_MINUS,
  32        WIIPROTO_KEY_ONE,
  33        WIIPROTO_KEY_TWO,
  34        WIIPROTO_KEY_A,
  35        WIIPROTO_KEY_B,
  36        WIIPROTO_KEY_HOME,
  37        WIIPROTO_KEY_COUNT
  38};
  39
  40static __u16 wiiproto_keymap[] = {
  41        KEY_LEFT,       /* WIIPROTO_KEY_LEFT */
  42        KEY_RIGHT,      /* WIIPROTO_KEY_RIGHT */
  43        KEY_UP,         /* WIIPROTO_KEY_UP */
  44        KEY_DOWN,       /* WIIPROTO_KEY_DOWN */
  45        KEY_NEXT,       /* WIIPROTO_KEY_PLUS */
  46        KEY_PREVIOUS,   /* WIIPROTO_KEY_MINUS */
  47        BTN_1,          /* WIIPROTO_KEY_ONE */
  48        BTN_2,          /* WIIPROTO_KEY_TWO */
  49        BTN_A,          /* WIIPROTO_KEY_A */
  50        BTN_B,          /* WIIPROTO_KEY_B */
  51        BTN_MODE,       /* WIIPROTO_KEY_HOME */
  52};
  53
  54static enum power_supply_property wiimote_battery_props[] = {
  55        POWER_SUPPLY_PROP_CAPACITY,
  56        POWER_SUPPLY_PROP_SCOPE,
  57};
  58
  59static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
  60                                                                size_t count)
  61{
  62        __u8 *buf;
  63        ssize_t ret;
  64
  65        if (!hdev->hid_output_raw_report)
  66                return -ENODEV;
  67
  68        buf = kmemdup(buffer, count, GFP_KERNEL);
  69        if (!buf)
  70                return -ENOMEM;
  71
  72        ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
  73
  74        kfree(buf);
  75        return ret;
  76}
  77
  78static void wiimote_worker(struct work_struct *work)
  79{
  80        struct wiimote_data *wdata = container_of(work, struct wiimote_data,
  81                                                                        worker);
  82        unsigned long flags;
  83
  84        spin_lock_irqsave(&wdata->qlock, flags);
  85
  86        while (wdata->head != wdata->tail) {
  87                spin_unlock_irqrestore(&wdata->qlock, flags);
  88                wiimote_hid_send(wdata->hdev, wdata->outq[wdata->tail].data,
  89                                                wdata->outq[wdata->tail].size);
  90                spin_lock_irqsave(&wdata->qlock, flags);
  91
  92                wdata->tail = (wdata->tail + 1) % WIIMOTE_BUFSIZE;
  93        }
  94
  95        spin_unlock_irqrestore(&wdata->qlock, flags);
  96}
  97
  98static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
  99                                                                size_t count)
 100{
 101        unsigned long flags;
 102        __u8 newhead;
 103
 104        if (count > HID_MAX_BUFFER_SIZE) {
 105                hid_warn(wdata->hdev, "Sending too large output report\n");
 106                return;
 107        }
 108
 109        /*
 110         * Copy new request into our output queue and check whether the
 111         * queue is full. If it is full, discard this request.
 112         * If it is empty we need to start a new worker that will
 113         * send out the buffer to the hid device.
 114         * If the queue is not empty, then there must be a worker
 115         * that is currently sending out our buffer and this worker
 116         * will reschedule itself until the queue is empty.
 117         */
 118
 119        spin_lock_irqsave(&wdata->qlock, flags);
 120
 121        memcpy(wdata->outq[wdata->head].data, buffer, count);
 122        wdata->outq[wdata->head].size = count;
 123        newhead = (wdata->head + 1) % WIIMOTE_BUFSIZE;
 124
 125        if (wdata->head == wdata->tail) {
 126                wdata->head = newhead;
 127                schedule_work(&wdata->worker);
 128        } else if (newhead != wdata->tail) {
 129                wdata->head = newhead;
 130        } else {
 131                hid_warn(wdata->hdev, "Output queue is full");
 132        }
 133
 134        spin_unlock_irqrestore(&wdata->qlock, flags);
 135}
 136
 137/*
 138 * This sets the rumble bit on the given output report if rumble is
 139 * currently enabled.
 140 * \cmd1 must point to the second byte in the output report => &cmd[1]
 141 * This must be called on nearly every output report before passing it
 142 * into the output queue!
 143 */
 144static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
 145{
 146        if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
 147                *cmd1 |= 0x01;
 148}
 149
 150static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
 151{
 152        __u8 cmd[2];
 153
 154        rumble = !!rumble;
 155        if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
 156                return;
 157
 158        if (rumble)
 159                wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
 160        else
 161                wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
 162
 163        cmd[0] = WIIPROTO_REQ_RUMBLE;
 164        cmd[1] = 0;
 165
 166        wiiproto_keep_rumble(wdata, &cmd[1]);
 167        wiimote_queue(wdata, cmd, sizeof(cmd));
 168}
 169
 170static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
 171{
 172        __u8 cmd[2];
 173
 174        leds &= WIIPROTO_FLAGS_LEDS;
 175        if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
 176                return;
 177        wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
 178
 179        cmd[0] = WIIPROTO_REQ_LED;
 180        cmd[1] = 0;
 181
 182        if (leds & WIIPROTO_FLAG_LED1)
 183                cmd[1] |= 0x10;
 184        if (leds & WIIPROTO_FLAG_LED2)
 185                cmd[1] |= 0x20;
 186        if (leds & WIIPROTO_FLAG_LED3)
 187                cmd[1] |= 0x40;
 188        if (leds & WIIPROTO_FLAG_LED4)
 189                cmd[1] |= 0x80;
 190
 191        wiiproto_keep_rumble(wdata, &cmd[1]);
 192        wiimote_queue(wdata, cmd, sizeof(cmd));
 193}
 194
 195/*
 196 * Check what peripherals of the wiimote are currently
 197 * active and select a proper DRM that supports all of
 198 * the requested data inputs.
 199 */
 200static __u8 select_drm(struct wiimote_data *wdata)
 201{
 202        __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
 203        bool ext = wiiext_active(wdata);
 204
 205        if (ir == WIIPROTO_FLAG_IR_BASIC) {
 206                if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
 207                        return WIIPROTO_REQ_DRM_KAIE;
 208                else
 209                        return WIIPROTO_REQ_DRM_KIE;
 210        } else if (ir == WIIPROTO_FLAG_IR_EXT) {
 211                return WIIPROTO_REQ_DRM_KAI;
 212        } else if (ir == WIIPROTO_FLAG_IR_FULL) {
 213                return WIIPROTO_REQ_DRM_SKAI1;
 214        } else {
 215                if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
 216                        if (ext)
 217                                return WIIPROTO_REQ_DRM_KAE;
 218                        else
 219                                return WIIPROTO_REQ_DRM_KA;
 220                } else {
 221                        if (ext)
 222                                return WIIPROTO_REQ_DRM_KE;
 223                        else
 224                                return WIIPROTO_REQ_DRM_K;
 225                }
 226        }
 227}
 228
 229void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
 230{
 231        __u8 cmd[3];
 232
 233        if (drm == WIIPROTO_REQ_NULL)
 234                drm = select_drm(wdata);
 235
 236        cmd[0] = WIIPROTO_REQ_DRM;
 237        cmd[1] = 0;
 238        cmd[2] = drm;
 239
 240        wdata->state.drm = drm;
 241        wiiproto_keep_rumble(wdata, &cmd[1]);
 242        wiimote_queue(wdata, cmd, sizeof(cmd));
 243}
 244
 245static void wiiproto_req_status(struct wiimote_data *wdata)
 246{
 247        __u8 cmd[2];
 248
 249        cmd[0] = WIIPROTO_REQ_SREQ;
 250        cmd[1] = 0;
 251
 252        wiiproto_keep_rumble(wdata, &cmd[1]);
 253        wiimote_queue(wdata, cmd, sizeof(cmd));
 254}
 255
 256static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
 257{
 258        accel = !!accel;
 259        if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 260                return;
 261
 262        if (accel)
 263                wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
 264        else
 265                wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
 266
 267        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 268}
 269
 270static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
 271{
 272        __u8 cmd[2];
 273
 274        cmd[0] = WIIPROTO_REQ_IR1;
 275        cmd[1] = flags;
 276
 277        wiiproto_keep_rumble(wdata, &cmd[1]);
 278        wiimote_queue(wdata, cmd, sizeof(cmd));
 279}
 280
 281static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
 282{
 283        __u8 cmd[2];
 284
 285        cmd[0] = WIIPROTO_REQ_IR2;
 286        cmd[1] = flags;
 287
 288        wiiproto_keep_rumble(wdata, &cmd[1]);
 289        wiimote_queue(wdata, cmd, sizeof(cmd));
 290}
 291
 292#define wiiproto_req_wreg(wdata, os, buf, sz) \
 293                        wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
 294
 295#define wiiproto_req_weeprom(wdata, os, buf, sz) \
 296                        wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
 297
 298static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
 299                                __u32 offset, const __u8 *buf, __u8 size)
 300{
 301        __u8 cmd[22];
 302
 303        if (size > 16 || size == 0) {
 304                hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
 305                return;
 306        }
 307
 308        memset(cmd, 0, sizeof(cmd));
 309        cmd[0] = WIIPROTO_REQ_WMEM;
 310        cmd[2] = (offset >> 16) & 0xff;
 311        cmd[3] = (offset >> 8) & 0xff;
 312        cmd[4] = offset & 0xff;
 313        cmd[5] = size;
 314        memcpy(&cmd[6], buf, size);
 315
 316        if (!eeprom)
 317                cmd[1] |= 0x04;
 318
 319        wiiproto_keep_rumble(wdata, &cmd[1]);
 320        wiimote_queue(wdata, cmd, sizeof(cmd));
 321}
 322
 323void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
 324                                                                __u16 size)
 325{
 326        __u8 cmd[7];
 327
 328        if (size == 0) {
 329                hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
 330                return;
 331        }
 332
 333        cmd[0] = WIIPROTO_REQ_RMEM;
 334        cmd[1] = 0;
 335        cmd[2] = (offset >> 16) & 0xff;
 336        cmd[3] = (offset >> 8) & 0xff;
 337        cmd[4] = offset & 0xff;
 338        cmd[5] = (size >> 8) & 0xff;
 339        cmd[6] = size & 0xff;
 340
 341        if (!eeprom)
 342                cmd[1] |= 0x04;
 343
 344        wiiproto_keep_rumble(wdata, &cmd[1]);
 345        wiimote_queue(wdata, cmd, sizeof(cmd));
 346}
 347
 348/* requries the cmd-mutex to be held */
 349int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
 350                                                const __u8 *wmem, __u8 size)
 351{
 352        unsigned long flags;
 353        int ret;
 354
 355        spin_lock_irqsave(&wdata->state.lock, flags);
 356        wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
 357        wiiproto_req_wreg(wdata, offset, wmem, size);
 358        spin_unlock_irqrestore(&wdata->state.lock, flags);
 359
 360        ret = wiimote_cmd_wait(wdata);
 361        if (!ret && wdata->state.cmd_err)
 362                ret = -EIO;
 363
 364        return ret;
 365}
 366
 367/* requries the cmd-mutex to be held */
 368ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
 369                                                                __u8 size)
 370{
 371        unsigned long flags;
 372        ssize_t ret;
 373
 374        spin_lock_irqsave(&wdata->state.lock, flags);
 375        wdata->state.cmd_read_size = size;
 376        wdata->state.cmd_read_buf = rmem;
 377        wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
 378        wiiproto_req_rreg(wdata, offset, size);
 379        spin_unlock_irqrestore(&wdata->state.lock, flags);
 380
 381        ret = wiimote_cmd_wait(wdata);
 382
 383        spin_lock_irqsave(&wdata->state.lock, flags);
 384        wdata->state.cmd_read_buf = NULL;
 385        spin_unlock_irqrestore(&wdata->state.lock, flags);
 386
 387        if (!ret) {
 388                if (wdata->state.cmd_read_size == 0)
 389                        ret = -EIO;
 390                else
 391                        ret = wdata->state.cmd_read_size;
 392        }
 393
 394        return ret;
 395}
 396
 397static int wiimote_battery_get_property(struct power_supply *psy,
 398                                                enum power_supply_property psp,
 399                                                union power_supply_propval *val)
 400{
 401        struct wiimote_data *wdata = container_of(psy,
 402                                                struct wiimote_data, battery);
 403        int ret = 0, state;
 404        unsigned long flags;
 405
 406        if (psp == POWER_SUPPLY_PROP_SCOPE) {
 407                val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 408                return 0;
 409        }
 410
 411        ret = wiimote_cmd_acquire(wdata);
 412        if (ret)
 413                return ret;
 414
 415        spin_lock_irqsave(&wdata->state.lock, flags);
 416        wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 417        wiiproto_req_status(wdata);
 418        spin_unlock_irqrestore(&wdata->state.lock, flags);
 419
 420        ret = wiimote_cmd_wait(wdata);
 421        state = wdata->state.cmd_battery;
 422        wiimote_cmd_release(wdata);
 423
 424        if (ret)
 425                return ret;
 426
 427        switch (psp) {
 428                case POWER_SUPPLY_PROP_CAPACITY:
 429                        val->intval = state * 100 / 255;
 430                        break;
 431                default:
 432                        ret = -EINVAL;
 433                        break;
 434        }
 435
 436        return ret;
 437}
 438
 439static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
 440{
 441        int ret;
 442        unsigned long flags;
 443        __u8 format = 0;
 444        static const __u8 data_enable[] = { 0x01 };
 445        static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 446                                                0x00, 0xaa, 0x00, 0x64 };
 447        static const __u8 data_sens2[] = { 0x63, 0x03 };
 448        static const __u8 data_fin[] = { 0x08 };
 449
 450        spin_lock_irqsave(&wdata->state.lock, flags);
 451
 452        if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 453                spin_unlock_irqrestore(&wdata->state.lock, flags);
 454                return 0;
 455        }
 456
 457        if (mode == 0) {
 458                wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 459                wiiproto_req_ir1(wdata, 0);
 460                wiiproto_req_ir2(wdata, 0);
 461                wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 462                spin_unlock_irqrestore(&wdata->state.lock, flags);
 463                return 0;
 464        }
 465
 466        spin_unlock_irqrestore(&wdata->state.lock, flags);
 467
 468        ret = wiimote_cmd_acquire(wdata);
 469        if (ret)
 470                return ret;
 471
 472        /* send PIXEL CLOCK ENABLE cmd first */
 473        spin_lock_irqsave(&wdata->state.lock, flags);
 474        wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 475        wiiproto_req_ir1(wdata, 0x06);
 476        spin_unlock_irqrestore(&wdata->state.lock, flags);
 477
 478        ret = wiimote_cmd_wait(wdata);
 479        if (ret)
 480                goto unlock;
 481        if (wdata->state.cmd_err) {
 482                ret = -EIO;
 483                goto unlock;
 484        }
 485
 486        /* enable IR LOGIC */
 487        spin_lock_irqsave(&wdata->state.lock, flags);
 488        wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 489        wiiproto_req_ir2(wdata, 0x06);
 490        spin_unlock_irqrestore(&wdata->state.lock, flags);
 491
 492        ret = wiimote_cmd_wait(wdata);
 493        if (ret)
 494                goto unlock;
 495        if (wdata->state.cmd_err) {
 496                ret = -EIO;
 497                goto unlock;
 498        }
 499
 500        /* enable IR cam but do not make it send data, yet */
 501        ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 502                                                        sizeof(data_enable));
 503        if (ret)
 504                goto unlock;
 505
 506        /* write first sensitivity block */
 507        ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 508                                                        sizeof(data_sens1));
 509        if (ret)
 510                goto unlock;
 511
 512        /* write second sensitivity block */
 513        ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 514                                                        sizeof(data_sens2));
 515        if (ret)
 516                goto unlock;
 517
 518        /* put IR cam into desired state */
 519        switch (mode) {
 520                case WIIPROTO_FLAG_IR_FULL:
 521                        format = 5;
 522                        break;
 523                case WIIPROTO_FLAG_IR_EXT:
 524                        format = 3;
 525                        break;
 526                case WIIPROTO_FLAG_IR_BASIC:
 527                        format = 1;
 528                        break;
 529        }
 530        ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 531        if (ret)
 532                goto unlock;
 533
 534        /* make IR cam send data */
 535        ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 536        if (ret)
 537                goto unlock;
 538
 539        /* request new DRM mode compatible to IR mode */
 540        spin_lock_irqsave(&wdata->state.lock, flags);
 541        wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 542        wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 543        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 544        spin_unlock_irqrestore(&wdata->state.lock, flags);
 545
 546unlock:
 547        wiimote_cmd_release(wdata);
 548        return ret;
 549}
 550
 551static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
 552{
 553        struct wiimote_data *wdata;
 554        struct device *dev = led_dev->dev->parent;
 555        int i;
 556        unsigned long flags;
 557        bool value = false;
 558
 559        wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 560
 561        for (i = 0; i < 4; ++i) {
 562                if (wdata->leds[i] == led_dev) {
 563                        spin_lock_irqsave(&wdata->state.lock, flags);
 564                        value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 565                        spin_unlock_irqrestore(&wdata->state.lock, flags);
 566                        break;
 567                }
 568        }
 569
 570        return value ? LED_FULL : LED_OFF;
 571}
 572
 573static void wiimote_leds_set(struct led_classdev *led_dev,
 574                                                enum led_brightness value)
 575{
 576        struct wiimote_data *wdata;
 577        struct device *dev = led_dev->dev->parent;
 578        int i;
 579        unsigned long flags;
 580        __u8 state, flag;
 581
 582        wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 583
 584        for (i = 0; i < 4; ++i) {
 585                if (wdata->leds[i] == led_dev) {
 586                        flag = WIIPROTO_FLAG_LED(i + 1);
 587                        spin_lock_irqsave(&wdata->state.lock, flags);
 588                        state = wdata->state.flags;
 589                        if (value == LED_OFF)
 590                                wiiproto_req_leds(wdata, state & ~flag);
 591                        else
 592                                wiiproto_req_leds(wdata, state | flag);
 593                        spin_unlock_irqrestore(&wdata->state.lock, flags);
 594                        break;
 595                }
 596        }
 597}
 598
 599static int wiimote_ff_play(struct input_dev *dev, void *data,
 600                                                        struct ff_effect *eff)
 601{
 602        struct wiimote_data *wdata = input_get_drvdata(dev);
 603        __u8 value;
 604        unsigned long flags;
 605
 606        /*
 607         * The wiimote supports only a single rumble motor so if any magnitude
 608         * is set to non-zero then we start the rumble motor. If both are set to
 609         * zero, we stop the rumble motor.
 610         */
 611
 612        if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 613                value = 1;
 614        else
 615                value = 0;
 616
 617        spin_lock_irqsave(&wdata->state.lock, flags);
 618        wiiproto_req_rumble(wdata, value);
 619        spin_unlock_irqrestore(&wdata->state.lock, flags);
 620
 621        return 0;
 622}
 623
 624static int wiimote_input_open(struct input_dev *dev)
 625{
 626        struct wiimote_data *wdata = input_get_drvdata(dev);
 627
 628        return hid_hw_open(wdata->hdev);
 629}
 630
 631static void wiimote_input_close(struct input_dev *dev)
 632{
 633        struct wiimote_data *wdata = input_get_drvdata(dev);
 634
 635        hid_hw_close(wdata->hdev);
 636}
 637
 638static int wiimote_accel_open(struct input_dev *dev)
 639{
 640        struct wiimote_data *wdata = input_get_drvdata(dev);
 641        int ret;
 642        unsigned long flags;
 643
 644        ret = hid_hw_open(wdata->hdev);
 645        if (ret)
 646                return ret;
 647
 648        spin_lock_irqsave(&wdata->state.lock, flags);
 649        wiiproto_req_accel(wdata, true);
 650        spin_unlock_irqrestore(&wdata->state.lock, flags);
 651
 652        return 0;
 653}
 654
 655static void wiimote_accel_close(struct input_dev *dev)
 656{
 657        struct wiimote_data *wdata = input_get_drvdata(dev);
 658        unsigned long flags;
 659
 660        spin_lock_irqsave(&wdata->state.lock, flags);
 661        wiiproto_req_accel(wdata, false);
 662        spin_unlock_irqrestore(&wdata->state.lock, flags);
 663
 664        hid_hw_close(wdata->hdev);
 665}
 666
 667static int wiimote_ir_open(struct input_dev *dev)
 668{
 669        struct wiimote_data *wdata = input_get_drvdata(dev);
 670        int ret;
 671
 672        ret = hid_hw_open(wdata->hdev);
 673        if (ret)
 674                return ret;
 675
 676        ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
 677        if (ret) {
 678                hid_hw_close(wdata->hdev);
 679                return ret;
 680        }
 681
 682        return 0;
 683}
 684
 685static void wiimote_ir_close(struct input_dev *dev)
 686{
 687        struct wiimote_data *wdata = input_get_drvdata(dev);
 688
 689        wiimote_init_ir(wdata, 0);
 690        hid_hw_close(wdata->hdev);
 691}
 692
 693static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
 694{
 695        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
 696                                                        !!(payload[0] & 0x01));
 697        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_RIGHT],
 698                                                        !!(payload[0] & 0x02));
 699        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_DOWN],
 700                                                        !!(payload[0] & 0x04));
 701        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_UP],
 702                                                        !!(payload[0] & 0x08));
 703        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_PLUS],
 704                                                        !!(payload[0] & 0x10));
 705        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_TWO],
 706                                                        !!(payload[1] & 0x01));
 707        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_ONE],
 708                                                        !!(payload[1] & 0x02));
 709        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_B],
 710                                                        !!(payload[1] & 0x04));
 711        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_A],
 712                                                        !!(payload[1] & 0x08));
 713        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_MINUS],
 714                                                        !!(payload[1] & 0x10));
 715        input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_HOME],
 716                                                        !!(payload[1] & 0x80));
 717        input_sync(wdata->input);
 718}
 719
 720static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
 721{
 722        __u16 x, y, z;
 723
 724        if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 725                return;
 726
 727        /*
 728         * payload is: BB BB XX YY ZZ
 729         * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 730         * contain the upper 8 bits of each value. The lower 2 bits are
 731         * contained in the buttons data BB BB.
 732         * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 733         * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 734         * accel value and bit 6 is the second bit of the Z value.
 735         * The first bit of Y and Z values is not available and always set to 0.
 736         * 0x200 is returned on no movement.
 737         */
 738
 739        x = payload[2] << 2;
 740        y = payload[3] << 2;
 741        z = payload[4] << 2;
 742
 743        x |= (payload[0] >> 5) & 0x3;
 744        y |= (payload[1] >> 4) & 0x2;
 745        z |= (payload[1] >> 5) & 0x2;
 746
 747        input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 748        input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 749        input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 750        input_sync(wdata->accel);
 751}
 752
 753#define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 754                                                        ABS_HAT0X, ABS_HAT0Y)
 755#define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 756                                                        ABS_HAT1X, ABS_HAT1Y)
 757#define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 758                                                        ABS_HAT2X, ABS_HAT2Y)
 759#define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 760                                                        ABS_HAT3X, ABS_HAT3Y)
 761
 762static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
 763                                                bool packed, __u8 xid, __u8 yid)
 764{
 765        __u16 x, y;
 766
 767        if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 768                return;
 769
 770        /*
 771         * Basic IR data is encoded into 3 bytes. The first two bytes are the
 772         * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 773         * of both.
 774         * If data is packed, then the 3rd byte is put first and slightly
 775         * reordered. This allows to interleave packed and non-packed data to
 776         * have two IR sets in 5 bytes instead of 6.
 777         * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
 778         */
 779
 780        if (packed) {
 781                x = ir[1] | ((ir[0] & 0x03) << 8);
 782                y = ir[2] | ((ir[0] & 0x0c) << 6);
 783        } else {
 784                x = ir[0] | ((ir[2] & 0x30) << 4);
 785                y = ir[1] | ((ir[2] & 0xc0) << 2);
 786        }
 787
 788        input_report_abs(wdata->ir, xid, x);
 789        input_report_abs(wdata->ir, yid, y);
 790}
 791
 792static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
 793{
 794        handler_keys(wdata, payload);
 795
 796        /* on status reports the drm is reset so we need to resend the drm */
 797        wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 798
 799        wiiext_event(wdata, payload[2] & 0x02);
 800
 801        if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
 802                wdata->state.cmd_battery = payload[5];
 803                wiimote_cmd_complete(wdata);
 804        }
 805}
 806
 807static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
 808{
 809        __u16 offset = payload[3] << 8 | payload[4];
 810        __u8 size = (payload[2] >> 4) + 1;
 811        __u8 err = payload[2] & 0x0f;
 812
 813        handler_keys(wdata, payload);
 814
 815        if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
 816                if (err)
 817                        size = 0;
 818                else if (size > wdata->state.cmd_read_size)
 819                        size = wdata->state.cmd_read_size;
 820
 821                wdata->state.cmd_read_size = size;
 822                if (wdata->state.cmd_read_buf)
 823                        memcpy(wdata->state.cmd_read_buf, &payload[5], size);
 824                wiimote_cmd_complete(wdata);
 825        }
 826}
 827
 828static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
 829{
 830        __u8 err = payload[3];
 831        __u8 cmd = payload[2];
 832
 833        handler_keys(wdata, payload);
 834
 835        if (wiimote_cmd_pending(wdata, cmd, 0)) {
 836                wdata->state.cmd_err = err;
 837                wiimote_cmd_complete(wdata);
 838        } else if (err) {
 839                hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
 840                                                                        cmd);
 841        }
 842}
 843
 844static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
 845{
 846        handler_keys(wdata, payload);
 847        handler_accel(wdata, payload);
 848}
 849
 850static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
 851{
 852        handler_keys(wdata, payload);
 853        wiiext_handle(wdata, &payload[2]);
 854}
 855
 856static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
 857{
 858        handler_keys(wdata, payload);
 859        handler_accel(wdata, payload);
 860        ir_to_input0(wdata, &payload[5], false);
 861        ir_to_input1(wdata, &payload[8], false);
 862        ir_to_input2(wdata, &payload[11], false);
 863        ir_to_input3(wdata, &payload[14], false);
 864        input_sync(wdata->ir);
 865}
 866
 867static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
 868{
 869        handler_keys(wdata, payload);
 870        wiiext_handle(wdata, &payload[2]);
 871}
 872
 873static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
 874{
 875        handler_keys(wdata, payload);
 876        ir_to_input0(wdata, &payload[2], false);
 877        ir_to_input1(wdata, &payload[4], true);
 878        ir_to_input2(wdata, &payload[7], false);
 879        ir_to_input3(wdata, &payload[9], true);
 880        input_sync(wdata->ir);
 881        wiiext_handle(wdata, &payload[12]);
 882}
 883
 884static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
 885{
 886        handler_keys(wdata, payload);
 887        handler_accel(wdata, payload);
 888        wiiext_handle(wdata, &payload[5]);
 889}
 890
 891static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
 892{
 893        handler_keys(wdata, payload);
 894        handler_accel(wdata, payload);
 895        ir_to_input0(wdata, &payload[5], false);
 896        ir_to_input1(wdata, &payload[7], true);
 897        ir_to_input2(wdata, &payload[10], false);
 898        ir_to_input3(wdata, &payload[12], true);
 899        input_sync(wdata->ir);
 900        wiiext_handle(wdata, &payload[15]);
 901}
 902
 903static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
 904{
 905        wiiext_handle(wdata, payload);
 906}
 907
 908static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
 909{
 910        handler_keys(wdata, payload);
 911
 912        wdata->state.accel_split[0] = payload[2];
 913        wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
 914        wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
 915
 916        ir_to_input0(wdata, &payload[3], false);
 917        ir_to_input1(wdata, &payload[12], false);
 918        input_sync(wdata->ir);
 919}
 920
 921static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
 922{
 923        __u8 buf[5];
 924
 925        handler_keys(wdata, payload);
 926
 927        wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
 928        wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
 929
 930        buf[0] = 0;
 931        buf[1] = 0;
 932        buf[2] = wdata->state.accel_split[0];
 933        buf[3] = payload[2];
 934        buf[4] = wdata->state.accel_split[1];
 935        handler_accel(wdata, buf);
 936
 937        ir_to_input2(wdata, &payload[3], false);
 938        ir_to_input3(wdata, &payload[12], false);
 939        input_sync(wdata->ir);
 940}
 941
 942struct wiiproto_handler {
 943        __u8 id;
 944        size_t size;
 945        void (*func)(struct wiimote_data *wdata, const __u8 *payload);
 946};
 947
 948static struct wiiproto_handler handlers[] = {
 949        { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
 950        { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
 951        { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
 952        { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
 953        { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
 954        { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
 955        { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
 956        { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
 957        { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
 958        { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
 959        { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
 960        { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
 961        { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
 962        { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
 963        { .id = 0 }
 964};
 965
 966static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
 967                                                        u8 *raw_data, int size)
 968{
 969        struct wiimote_data *wdata = hid_get_drvdata(hdev);
 970        struct wiiproto_handler *h;
 971        int i;
 972        unsigned long flags;
 973        bool handled = false;
 974
 975        if (size < 1)
 976                return -EINVAL;
 977
 978        spin_lock_irqsave(&wdata->state.lock, flags);
 979
 980        for (i = 0; handlers[i].id; ++i) {
 981                h = &handlers[i];
 982                if (h->id == raw_data[0] && h->size < size) {
 983                        h->func(wdata, &raw_data[1]);
 984                        handled = true;
 985                }
 986        }
 987
 988        if (!handled)
 989                hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
 990                                                                        size);
 991
 992        spin_unlock_irqrestore(&wdata->state.lock, flags);
 993
 994        return 0;
 995}
 996
 997static void wiimote_leds_destroy(struct wiimote_data *wdata)
 998{
 999        int i;
1000        struct led_classdev *led;
1001
1002        for (i = 0; i < 4; ++i) {
1003                if (wdata->leds[i]) {
1004                        led = wdata->leds[i];
1005                        wdata->leds[i] = NULL;
1006                        led_classdev_unregister(led);
1007                        kfree(led);
1008                }
1009        }
1010}
1011
1012static int wiimote_leds_create(struct wiimote_data *wdata)
1013{
1014        int i, ret;
1015        struct device *dev = &wdata->hdev->dev;
1016        size_t namesz = strlen(dev_name(dev)) + 9;
1017        struct led_classdev *led;
1018        char *name;
1019
1020        for (i = 0; i < 4; ++i) {
1021                led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
1022                if (!led) {
1023                        ret = -ENOMEM;
1024                        goto err;
1025                }
1026                name = (void*)&led[1];
1027                snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
1028                led->name = name;
1029                led->brightness = 0;
1030                led->max_brightness = 1;
1031                led->brightness_get = wiimote_leds_get;
1032                led->brightness_set = wiimote_leds_set;
1033
1034                ret = led_classdev_register(dev, led);
1035                if (ret) {
1036                        kfree(led);
1037                        goto err;
1038                }
1039                wdata->leds[i] = led;
1040        }
1041
1042        return 0;
1043
1044err:
1045        wiimote_leds_destroy(wdata);
1046        return ret;
1047}
1048
1049static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1050{
1051        struct wiimote_data *wdata;
1052        int i;
1053
1054        wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1055        if (!wdata)
1056                return NULL;
1057
1058        wdata->input = input_allocate_device();
1059        if (!wdata->input)
1060                goto err;
1061
1062        wdata->hdev = hdev;
1063        hid_set_drvdata(hdev, wdata);
1064
1065        input_set_drvdata(wdata->input, wdata);
1066        wdata->input->open = wiimote_input_open;
1067        wdata->input->close = wiimote_input_close;
1068        wdata->input->dev.parent = &wdata->hdev->dev;
1069        wdata->input->id.bustype = wdata->hdev->bus;
1070        wdata->input->id.vendor = wdata->hdev->vendor;
1071        wdata->input->id.product = wdata->hdev->product;
1072        wdata->input->id.version = wdata->hdev->version;
1073        wdata->input->name = WIIMOTE_NAME;
1074
1075        set_bit(EV_KEY, wdata->input->evbit);
1076        for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
1077                set_bit(wiiproto_keymap[i], wdata->input->keybit);
1078
1079        set_bit(FF_RUMBLE, wdata->input->ffbit);
1080        if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play))
1081                goto err_input;
1082
1083        wdata->accel = input_allocate_device();
1084        if (!wdata->accel)
1085                goto err_input;
1086
1087        input_set_drvdata(wdata->accel, wdata);
1088        wdata->accel->open = wiimote_accel_open;
1089        wdata->accel->close = wiimote_accel_close;
1090        wdata->accel->dev.parent = &wdata->hdev->dev;
1091        wdata->accel->id.bustype = wdata->hdev->bus;
1092        wdata->accel->id.vendor = wdata->hdev->vendor;
1093        wdata->accel->id.product = wdata->hdev->product;
1094        wdata->accel->id.version = wdata->hdev->version;
1095        wdata->accel->name = WIIMOTE_NAME " Accelerometer";
1096
1097        set_bit(EV_ABS, wdata->accel->evbit);
1098        set_bit(ABS_RX, wdata->accel->absbit);
1099        set_bit(ABS_RY, wdata->accel->absbit);
1100        set_bit(ABS_RZ, wdata->accel->absbit);
1101        input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
1102        input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
1103        input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
1104
1105        wdata->ir = input_allocate_device();
1106        if (!wdata->ir)
1107                goto err_ir;
1108
1109        input_set_drvdata(wdata->ir, wdata);
1110        wdata->ir->open = wiimote_ir_open;
1111        wdata->ir->close = wiimote_ir_close;
1112        wdata->ir->dev.parent = &wdata->hdev->dev;
1113        wdata->ir->id.bustype = wdata->hdev->bus;
1114        wdata->ir->id.vendor = wdata->hdev->vendor;
1115        wdata->ir->id.product = wdata->hdev->product;
1116        wdata->ir->id.version = wdata->hdev->version;
1117        wdata->ir->name = WIIMOTE_NAME " IR";
1118
1119        set_bit(EV_ABS, wdata->ir->evbit);
1120        set_bit(ABS_HAT0X, wdata->ir->absbit);
1121        set_bit(ABS_HAT0Y, wdata->ir->absbit);
1122        set_bit(ABS_HAT1X, wdata->ir->absbit);
1123        set_bit(ABS_HAT1Y, wdata->ir->absbit);
1124        set_bit(ABS_HAT2X, wdata->ir->absbit);
1125        set_bit(ABS_HAT2Y, wdata->ir->absbit);
1126        set_bit(ABS_HAT3X, wdata->ir->absbit);
1127        set_bit(ABS_HAT3Y, wdata->ir->absbit);
1128        input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
1129        input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
1130        input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
1131        input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
1132        input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
1133        input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
1134        input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
1135        input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
1136
1137        spin_lock_init(&wdata->qlock);
1138        INIT_WORK(&wdata->worker, wiimote_worker);
1139
1140        spin_lock_init(&wdata->state.lock);
1141        init_completion(&wdata->state.ready);
1142        mutex_init(&wdata->state.sync);
1143        wdata->state.drm = WIIPROTO_REQ_DRM_K;
1144
1145        return wdata;
1146
1147err_ir:
1148        input_free_device(wdata->accel);
1149err_input:
1150        input_free_device(wdata->input);
1151err:
1152        kfree(wdata);
1153        return NULL;
1154}
1155
1156static void wiimote_destroy(struct wiimote_data *wdata)
1157{
1158        wiidebug_deinit(wdata);
1159        wiiext_deinit(wdata);
1160        wiimote_leds_destroy(wdata);
1161
1162        power_supply_unregister(&wdata->battery);
1163        input_unregister_device(wdata->accel);
1164        input_unregister_device(wdata->ir);
1165        input_unregister_device(wdata->input);
1166        cancel_work_sync(&wdata->worker);
1167        hid_hw_stop(wdata->hdev);
1168
1169        kfree(wdata);
1170}
1171
1172static int wiimote_hid_probe(struct hid_device *hdev,
1173                                const struct hid_device_id *id)
1174{
1175        struct wiimote_data *wdata;
1176        int ret;
1177
1178        hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1179
1180        wdata = wiimote_create(hdev);
1181        if (!wdata) {
1182                hid_err(hdev, "Can't alloc device\n");
1183                return -ENOMEM;
1184        }
1185
1186        ret = hid_parse(hdev);
1187        if (ret) {
1188                hid_err(hdev, "HID parse failed\n");
1189                goto err;
1190        }
1191
1192        ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1193        if (ret) {
1194                hid_err(hdev, "HW start failed\n");
1195                goto err;
1196        }
1197
1198        ret = input_register_device(wdata->accel);
1199        if (ret) {
1200                hid_err(hdev, "Cannot register input device\n");
1201                goto err_stop;
1202        }
1203
1204        ret = input_register_device(wdata->ir);
1205        if (ret) {
1206                hid_err(hdev, "Cannot register input device\n");
1207                goto err_ir;
1208        }
1209
1210        ret = input_register_device(wdata->input);
1211        if (ret) {
1212                hid_err(hdev, "Cannot register input device\n");
1213                goto err_input;
1214        }
1215
1216        wdata->battery.properties = wiimote_battery_props;
1217        wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
1218        wdata->battery.get_property = wiimote_battery_get_property;
1219        wdata->battery.name = "wiimote_battery";
1220        wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1221        wdata->battery.use_for_apm = 0;
1222
1223        ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
1224        if (ret) {
1225                hid_err(hdev, "Cannot register battery device\n");
1226                goto err_battery;
1227        }
1228
1229        power_supply_powers(&wdata->battery, &hdev->dev);
1230
1231        ret = wiimote_leds_create(wdata);
1232        if (ret)
1233                goto err_free;
1234
1235        ret = wiiext_init(wdata);
1236        if (ret)
1237                goto err_free;
1238
1239        ret = wiidebug_init(wdata);
1240        if (ret)
1241                goto err_free;
1242
1243        hid_info(hdev, "New device registered\n");
1244
1245        /* by default set led1 after device initialization */
1246        spin_lock_irq(&wdata->state.lock);
1247        wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
1248        spin_unlock_irq(&wdata->state.lock);
1249
1250        return 0;
1251
1252err_free:
1253        wiimote_destroy(wdata);
1254        return ret;
1255
1256err_battery:
1257        input_unregister_device(wdata->input);
1258        wdata->input = NULL;
1259err_input:
1260        input_unregister_device(wdata->ir);
1261        wdata->ir = NULL;
1262err_ir:
1263        input_unregister_device(wdata->accel);
1264        wdata->accel = NULL;
1265err_stop:
1266        hid_hw_stop(hdev);
1267err:
1268        input_free_device(wdata->ir);
1269        input_free_device(wdata->accel);
1270        input_free_device(wdata->input);
1271        kfree(wdata);
1272        return ret;
1273}
1274
1275static void wiimote_hid_remove(struct hid_device *hdev)
1276{
1277        struct wiimote_data *wdata = hid_get_drvdata(hdev);
1278
1279        hid_info(hdev, "Device removed\n");
1280        wiimote_destroy(wdata);
1281}
1282
1283static const struct hid_device_id wiimote_hid_devices[] = {
1284        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1285                                USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1286        { }
1287};
1288MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1289
1290static struct hid_driver wiimote_hid_driver = {
1291        .name = "wiimote",
1292        .id_table = wiimote_hid_devices,
1293        .probe = wiimote_hid_probe,
1294        .remove = wiimote_hid_remove,
1295        .raw_event = wiimote_hid_event,
1296};
1297
1298static int __init wiimote_init(void)
1299{
1300        int ret;
1301
1302        ret = hid_register_driver(&wiimote_hid_driver);
1303        if (ret)
1304                pr_err("Can't register wiimote hid driver\n");
1305
1306        return ret;
1307}
1308
1309static void __exit wiimote_exit(void)
1310{
1311        hid_unregister_driver(&wiimote_hid_driver);
1312}
1313
1314module_init(wiimote_init);
1315module_exit(wiimote_exit);
1316MODULE_LICENSE("GPL");
1317MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1318MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");
1319
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