drivers/hid/hid-wiimote-core.c

   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
  25 enum 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
  40 static __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
  54 static enum power_supply_property wiimote_battery_props[] = {
  55         POWER_SUPPLY_PROP_CAPACITY,
  56         POWER_SUPPLY_PROP_SCOPE,
  57 };
  58
  59 static 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
  78 static 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
  98 static 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  */
 144 static 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
 150 static 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
 170 static 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  */
 200 static __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
 229 void 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
 245 static 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
 256 static 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
 270 static 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
 281 static 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
 298 static 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
 323 void 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 */
 349 int 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 */
 368 ssize_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
 397 static 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
 439 static 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
 546 unlock:
 547         wiimote_cmd_release(wdata);
 548         return ret;
 549 }
 550
 551 static 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
 573 static 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
 599 static 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
 624 static 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
 631 static 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
 638 static 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
 655 static 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
 667 static 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
 685 static 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
 693 static 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
 720 static 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
 762 static 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
 792 /* reduced status report with "BB BB" key data only */
 793 static void handler_status_K(struct wiimote_data *wdata,
 794                              const __u8 *payload)
 795 {
 796         handler_keys(wdata, payload);
 797
 798         /* on status reports the drm is reset so we need to resend the drm */
 799         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 800 }
 801
 802 /* extended status report with "BB BB LF 00 00 VV" data */
 803 static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
 804 {
 805         handler_status_K(wdata, payload);
 806
 807         wiiext_event(wdata, payload[2] & 0x02);
 808
 809         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
 810                 wdata->state.cmd_battery = payload[5];
 811                 wiimote_cmd_complete(wdata);
 812         }
 813 }
 814
 815 /* reduced generic report with "BB BB" key data only */
 816 static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload)
 817 {
 818         handler_keys(wdata, payload);
 819 }
 820
 821 static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
 822 {
 823         __u16 offset = payload[3] << 8 | payload[4];
 824         __u8 size = (payload[2] >> 4) + 1;
 825         __u8 err = payload[2] & 0x0f;
 826
 827         handler_keys(wdata, payload);
 828
 829         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
 830                 if (err)
 831                         size = 0;
 832                 else if (size > wdata->state.cmd_read_size)
 833                         size = wdata->state.cmd_read_size;
 834
 835                 wdata->state.cmd_read_size = size;
 836                 if (wdata->state.cmd_read_buf)
 837                         memcpy(wdata->state.cmd_read_buf, &payload[5], size);
 838                 wiimote_cmd_complete(wdata);
 839         }
 840 }
 841
 842 static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
 843 {
 844         __u8 err = payload[3];
 845         __u8 cmd = payload[2];
 846
 847         handler_keys(wdata, payload);
 848
 849         if (wiimote_cmd_pending(wdata, cmd, 0)) {
 850                 wdata->state.cmd_err = err;
 851                 wiimote_cmd_complete(wdata);
 852         } else if (err) {
 853                 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
 854                                                                         cmd);
 855         }
 856 }
 857
 858 static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
 859 {
 860         handler_keys(wdata, payload);
 861         handler_accel(wdata, payload);
 862 }
 863
 864 static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
 865 {
 866         handler_keys(wdata, payload);
 867         wiiext_handle(wdata, &payload[2]);
 868 }
 869
 870 static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
 871 {
 872         handler_keys(wdata, payload);
 873         handler_accel(wdata, payload);
 874         ir_to_input0(wdata, &payload[5], false);
 875         ir_to_input1(wdata, &payload[8], false);
 876         ir_to_input2(wdata, &payload[11], false);
 877         ir_to_input3(wdata, &payload[14], false);
 878         input_sync(wdata->ir);
 879 }
 880
 881 static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
 882 {
 883         handler_keys(wdata, payload);
 884         wiiext_handle(wdata, &payload[2]);
 885 }
 886
 887 static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
 888 {
 889         handler_keys(wdata, payload);
 890         ir_to_input0(wdata, &payload[2], false);
 891         ir_to_input1(wdata, &payload[4], true);
 892         ir_to_input2(wdata, &payload[7], false);
 893         ir_to_input3(wdata, &payload[9], true);
 894         input_sync(wdata->ir);
 895         wiiext_handle(wdata, &payload[12]);
 896 }
 897
 898 static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
 899 {
 900         handler_keys(wdata, payload);
 901         handler_accel(wdata, payload);
 902         wiiext_handle(wdata, &payload[5]);
 903 }
 904
 905 static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
 906 {
 907         handler_keys(wdata, payload);
 908         handler_accel(wdata, payload);
 909         ir_to_input0(wdata, &payload[5], false);
 910         ir_to_input1(wdata, &payload[7], true);
 911         ir_to_input2(wdata, &payload[10], false);
 912         ir_to_input3(wdata, &payload[12], true);
 913         input_sync(wdata->ir);
 914         wiiext_handle(wdata, &payload[15]);
 915 }
 916
 917 static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
 918 {
 919         wiiext_handle(wdata, payload);
 920 }
 921
 922 static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
 923 {
 924         handler_keys(wdata, payload);
 925
 926         wdata->state.accel_split[0] = payload[2];
 927         wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
 928         wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
 929
 930         ir_to_input0(wdata, &payload[3], false);
 931         ir_to_input1(wdata, &payload[12], false);
 932         input_sync(wdata->ir);
 933 }
 934
 935 static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
 936 {
 937         __u8 buf[5];
 938
 939         handler_keys(wdata, payload);
 940
 941         wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
 942         wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
 943
 944         buf[0] = 0;
 945         buf[1] = 0;
 946         buf[2] = wdata->state.accel_split[0];
 947         buf[3] = payload[2];
 948         buf[4] = wdata->state.accel_split[1];
 949         handler_accel(wdata, buf);
 950
 951         ir_to_input2(wdata, &payload[3], false);
 952         ir_to_input3(wdata, &payload[12], false);
 953         input_sync(wdata->ir);
 954 }
 955
 956 struct wiiproto_handler {
 957         __u8 id;
 958         size_t size;
 959         void (*func)(struct wiimote_data *wdata, const __u8 *payload);
 960 };
 961
 962 static struct wiiproto_handler handlers[] = {
 963         { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
 964         { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K },
 965         { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
 966         { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K },
 967         { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
 968         { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K },
 969         { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
 970         { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
 971         { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K },
 972         { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
 973         { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K },
 974         { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
 975         { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K },
 976         { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
 977         { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K },
 978         { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
 979         { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K },
 980         { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
 981         { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K },
 982         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
 983         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K },
 984         { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
 985         { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
 986         { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
 987         { .id = 0 }
 988 };
 989
 990 static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
 991                                                         u8 *raw_data, int size)
 992 {
 993         struct wiimote_data *wdata = hid_get_drvdata(hdev);
 994         struct wiiproto_handler *h;
 995         int i;
 996         unsigned long flags;
 997
 998         if (size < 1)
 999                 return -EINVAL;
1000
1001         spin_lock_irqsave(&wdata->state.lock, flags);
1002
1003         for (i = 0; handlers[i].id; ++i) {
1004                 h = &handlers[i];
1005                 if (h->id == raw_data[0] && h->size < size) {
1006                         h->func(wdata, &raw_data[1]);
1007                         break;
1008                 }
1009         }
1010
1011         if (!handlers[i].id)
1012                 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
1013                                                                         size);
1014
1015         spin_unlock_irqrestore(&wdata->state.lock, flags);
1016
1017         return 0;
1018 }
1019
1020 static void wiimote_leds_destroy(struct wiimote_data *wdata)
1021 {
1022         int i;
1023         struct led_classdev *led;
1024
1025         for (i = 0; i < 4; ++i) {
1026                 if (wdata->leds[i]) {
1027                         led = wdata->leds[i];
1028                         wdata->leds[i] = NULL;
1029                         led_classdev_unregister(led);
1030                         kfree(led);
1031                 }
1032         }
1033 }
1034
1035 static int wiimote_leds_create(struct wiimote_data *wdata)
1036 {
1037         int i, ret;
1038         struct device *dev = &wdata->hdev->dev;
1039         size_t namesz = strlen(dev_name(dev)) + 9;
1040         struct led_classdev *led;
1041         char *name;
1042
1043         for (i = 0; i < 4; ++i) {
1044                 led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
1045                 if (!led) {
1046                         ret = -ENOMEM;
1047                         goto err;
1048                 }
1049                 name = (void*)&led[1];
1050                 snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
1051                 led->name = name;
1052                 led->brightness = 0;
1053                 led->max_brightness = 1;
1054                 led->brightness_get = wiimote_leds_get;
1055                 led->brightness_set = wiimote_leds_set;
1056
1057                 ret = led_classdev_register(dev, led);
1058                 if (ret) {
1059                         kfree(led);
1060                         goto err;
1061                 }
1062                 wdata->leds[i] = led;
1063         }
1064
1065         return 0;
1066
1067 err:
1068         wiimote_leds_destroy(wdata);
1069         return ret;
1070 }
1071
1072 static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1073 {
1074         struct wiimote_data *wdata;
1075         int i;
1076
1077         wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1078         if (!wdata)
1079                 return NULL;
1080
1081         wdata->input = input_allocate_device();
1082         if (!wdata->input)
1083                 goto err;
1084
1085         wdata->hdev = hdev;
1086         hid_set_drvdata(hdev, wdata);
1087
1088         input_set_drvdata(wdata->input, wdata);
1089         wdata->input->open = wiimote_input_open;
1090         wdata->input->close = wiimote_input_close;
1091         wdata->input->dev.parent = &wdata->hdev->dev;
1092         wdata->input->id.bustype = wdata->hdev->bus;
1093         wdata->input->id.vendor = wdata->hdev->vendor;
1094         wdata->input->id.product = wdata->hdev->product;
1095         wdata->input->id.version = wdata->hdev->version;
1096         wdata->input->name = WIIMOTE_NAME;
1097
1098         set_bit(EV_KEY, wdata->input->evbit);
1099         for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
1100                 set_bit(wiiproto_keymap[i], wdata->input->keybit);
1101
1102         set_bit(FF_RUMBLE, wdata->input->ffbit);
1103         if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play))
1104                 goto err_input;
1105
1106         wdata->accel = input_allocate_device();
1107         if (!wdata->accel)
1108                 goto err_input;
1109
1110         input_set_drvdata(wdata->accel, wdata);
1111         wdata->accel->open = wiimote_accel_open;
1112         wdata->accel->close = wiimote_accel_close;
1113         wdata->accel->dev.parent = &wdata->hdev->dev;
1114         wdata->accel->id.bustype = wdata->hdev->bus;
1115         wdata->accel->id.vendor = wdata->hdev->vendor;
1116         wdata->accel->id.product = wdata->hdev->product;
1117         wdata->accel->id.version = wdata->hdev->version;
1118         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
1119
1120         set_bit(EV_ABS, wdata->accel->evbit);
1121         set_bit(ABS_RX, wdata->accel->absbit);
1122         set_bit(ABS_RY, wdata->accel->absbit);
1123         set_bit(ABS_RZ, wdata->accel->absbit);
1124         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
1125         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
1126         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
1127
1128         wdata->ir = input_allocate_device();
1129         if (!wdata->ir)
1130                 goto err_ir;
1131
1132         input_set_drvdata(wdata->ir, wdata);
1133         wdata->ir->open = wiimote_ir_open;
1134         wdata->ir->close = wiimote_ir_close;
1135         wdata->ir->dev.parent = &wdata->hdev->dev;
1136         wdata->ir->id.bustype = wdata->hdev->bus;
1137         wdata->ir->id.vendor = wdata->hdev->vendor;
1138         wdata->ir->id.product = wdata->hdev->product;
1139         wdata->ir->id.version = wdata->hdev->version;
1140         wdata->ir->name = WIIMOTE_NAME " IR";
1141
1142         set_bit(EV_ABS, wdata->ir->evbit);
1143         set_bit(ABS_HAT0X, wdata->ir->absbit);
1144         set_bit(ABS_HAT0Y, wdata->ir->absbit);
1145         set_bit(ABS_HAT1X, wdata->ir->absbit);
1146         set_bit(ABS_HAT1Y, wdata->ir->absbit);
1147         set_bit(ABS_HAT2X, wdata->ir->absbit);
1148         set_bit(ABS_HAT2Y, wdata->ir->absbit);
1149         set_bit(ABS_HAT3X, wdata->ir->absbit);
1150         set_bit(ABS_HAT3Y, wdata->ir->absbit);
1151         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
1152         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
1153         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
1154         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
1155         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
1156         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
1157         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
1158         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
1159
1160         spin_lock_init(&wdata->qlock);
1161         INIT_WORK(&wdata->worker, wiimote_worker);
1162
1163         spin_lock_init(&wdata->state.lock);
1164         init_completion(&wdata->state.ready);
1165         mutex_init(&wdata->state.sync);
1166         wdata->state.drm = WIIPROTO_REQ_DRM_K;
1167
1168         return wdata;
1169
1170 err_ir:
1171         input_free_device(wdata->accel);
1172 err_input:
1173         input_free_device(wdata->input);
1174 err:
1175         kfree(wdata);
1176         return NULL;
1177 }
1178
1179 static void wiimote_destroy(struct wiimote_data *wdata)
1180 {
1181         wiidebug_deinit(wdata);
1182         wiiext_deinit(wdata);
1183         wiimote_leds_destroy(wdata);
1184
1185         power_supply_unregister(&wdata->battery);
1186         kfree(wdata->battery.name);
1187         input_unregister_device(wdata->accel);
1188         input_unregister_device(wdata->ir);
1189         input_unregister_device(wdata->input);
1190         cancel_work_sync(&wdata->worker);
1191         hid_hw_stop(wdata->hdev);
1192
1193         kfree(wdata);
1194 }
1195
1196 static int wiimote_hid_probe(struct hid_device *hdev,
1197                                 const struct hid_device_id *id)
1198 {
1199         struct wiimote_data *wdata;
1200         int ret;
1201
1202         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1203
1204         wdata = wiimote_create(hdev);
1205         if (!wdata) {
1206                 hid_err(hdev, "Can't alloc device\n");
1207                 return -ENOMEM;
1208         }
1209
1210         ret = hid_parse(hdev);
1211         if (ret) {
1212                 hid_err(hdev, "HID parse failed\n");
1213                 goto err;
1214         }
1215
1216         ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1217         if (ret) {
1218                 hid_err(hdev, "HW start failed\n");
1219                 goto err;
1220         }
1221
1222         ret = input_register_device(wdata->accel);
1223         if (ret) {
1224                 hid_err(hdev, "Cannot register input device\n");
1225                 goto err_stop;
1226         }
1227
1228         ret = input_register_device(wdata->ir);
1229         if (ret) {
1230                 hid_err(hdev, "Cannot register input device\n");
1231                 goto err_ir;
1232         }
1233
1234         ret = input_register_device(wdata->input);
1235         if (ret) {
1236                 hid_err(hdev, "Cannot register input device\n");
1237                 goto err_input;
1238         }
1239
1240         wdata->battery.properties = wiimote_battery_props;
1241         wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
1242         wdata->battery.get_property = wiimote_battery_get_property;
1243         wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1244         wdata->battery.use_for_apm = 0;
1245         wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
1246                                         wdata->hdev->uniq);
1247         if (!wdata->battery.name) {
1248                 ret = -ENOMEM;
1249                 goto err_battery_name;
1250         }
1251
1252         ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
1253         if (ret) {
1254                 hid_err(hdev, "Cannot register battery device\n");
1255                 goto err_battery;
1256         }
1257
1258         power_supply_powers(&wdata->battery, &hdev->dev);
1259
1260         ret = wiimote_leds_create(wdata);
1261         if (ret)
1262                 goto err_free;
1263
1264         ret = wiiext_init(wdata);
1265         if (ret)
1266                 goto err_free;
1267
1268         ret = wiidebug_init(wdata);
1269         if (ret)
1270                 goto err_free;
1271
1272         hid_info(hdev, "New device registered\n");
1273
1274         /* by default set led1 after device initialization */
1275         spin_lock_irq(&wdata->state.lock);
1276         wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
1277         spin_unlock_irq(&wdata->state.lock);
1278
1279         return 0;
1280
1281 err_free:
1282         wiimote_destroy(wdata);
1283         return ret;
1284
1285 err_battery:
1286         kfree(wdata->battery.name);
1287 err_battery_name:
1288         input_unregister_device(wdata->input);
1289         wdata->input = NULL;
1290 err_input:
1291         input_unregister_device(wdata->ir);
1292         wdata->ir = NULL;
1293 err_ir:
1294         input_unregister_device(wdata->accel);
1295         wdata->accel = NULL;
1296 err_stop:
1297         hid_hw_stop(hdev);
1298 err:
1299         input_free_device(wdata->ir);
1300         input_free_device(wdata->accel);
1301         input_free_device(wdata->input);
1302         kfree(wdata);
1303         return ret;
1304 }
1305
1306 static void wiimote_hid_remove(struct hid_device *hdev)
1307 {
1308         struct wiimote_data *wdata = hid_get_drvdata(hdev);
1309
1310         hid_info(hdev, "Device removed\n");
1311         wiimote_destroy(wdata);
1312 }
1313
1314 static const struct hid_device_id wiimote_hid_devices[] = {
1315         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1316                                 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1317         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1318                                 USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1319         { }
1320 };
1321 MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1322
1323 static struct hid_driver wiimote_hid_driver = {
1324         .name = "wiimote",
1325         .id_table = wiimote_hid_devices,
1326         .probe = wiimote_hid_probe,
1327         .remove = wiimote_hid_remove,
1328         .raw_event = wiimote_hid_event,
1329 };
1330 module_hid_driver(wiimote_hid_driver);
1331
1332 MODULE_LICENSE("GPL");
1333 MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1334 MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");