drivers/hid/hid-wiimote-core.c

   1 /*
   2  * HID driver for Nintendo Wii / Wii U peripherals
   3  * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
   4  */
   5
   6 /*
   7  * This program is free software; you can redistribute it and/or modify it
   8  * under the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  */
  12
  13 #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 /* output queue handling */
  60
  61 static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
  62                                                                 size_t count)
  63 {
  64         __u8 *buf;
  65         ssize_t ret;
  66
  67         if (!hdev->hid_output_raw_report)
  68                 return -ENODEV;
  69
  70         buf = kmemdup(buffer, count, GFP_KERNEL);
  71         if (!buf)
  72                 return -ENOMEM;
  73
  74         ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
  75
  76         kfree(buf);
  77         return ret;
  78 }
  79
  80 static void wiimote_queue_worker(struct work_struct *work)
  81 {
  82         struct wiimote_queue *queue = container_of(work, struct wiimote_queue,
  83                                                    worker);
  84         struct wiimote_data *wdata = container_of(queue, struct wiimote_data,
  85                                                   queue);
  86         unsigned long flags;
  87
  88         spin_lock_irqsave(&wdata->queue.lock, flags);
  89
  90         while (wdata->queue.head != wdata->queue.tail) {
  91                 spin_unlock_irqrestore(&wdata->queue.lock, flags);
  92                 wiimote_hid_send(wdata->hdev,
  93                                  wdata->queue.outq[wdata->queue.tail].data,
  94                                  wdata->queue.outq[wdata->queue.tail].size);
  95                 spin_lock_irqsave(&wdata->queue.lock, flags);
  96
  97                 wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE;
  98         }
  99
 100         spin_unlock_irqrestore(&wdata->queue.lock, flags);
 101 }
 102
 103 static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
 104                                                                 size_t count)
 105 {
 106         unsigned long flags;
 107         __u8 newhead;
 108
 109         if (count > HID_MAX_BUFFER_SIZE) {
 110                 hid_warn(wdata->hdev, "Sending too large output report\n");
 111                 return;
 112         }
 113
 114         /*
 115          * Copy new request into our output queue and check whether the
 116          * queue is full. If it is full, discard this request.
 117          * If it is empty we need to start a new worker that will
 118          * send out the buffer to the hid device.
 119          * If the queue is not empty, then there must be a worker
 120          * that is currently sending out our buffer and this worker
 121          * will reschedule itself until the queue is empty.
 122          */
 123
 124         spin_lock_irqsave(&wdata->queue.lock, flags);
 125
 126         memcpy(wdata->queue.outq[wdata->queue.head].data, buffer, count);
 127         wdata->queue.outq[wdata->queue.head].size = count;
 128         newhead = (wdata->queue.head + 1) % WIIMOTE_BUFSIZE;
 129
 130         if (wdata->queue.head == wdata->queue.tail) {
 131                 wdata->queue.head = newhead;
 132                 schedule_work(&wdata->queue.worker);
 133         } else if (newhead != wdata->queue.tail) {
 134                 wdata->queue.head = newhead;
 135         } else {
 136                 hid_warn(wdata->hdev, "Output queue is full");
 137         }
 138
 139         spin_unlock_irqrestore(&wdata->queue.lock, flags);
 140 }
 141
 142 /*
 143  * This sets the rumble bit on the given output report if rumble is
 144  * currently enabled.
 145  * \cmd1 must point to the second byte in the output report => &cmd[1]
 146  * This must be called on nearly every output report before passing it
 147  * into the output queue!
 148  */
 149 static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
 150 {
 151         if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
 152                 *cmd1 |= 0x01;
 153 }
 154
 155 static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
 156 {
 157         __u8 cmd[2];
 158
 159         rumble = !!rumble;
 160         if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
 161                 return;
 162
 163         if (rumble)
 164                 wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
 165         else
 166                 wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
 167
 168         cmd[0] = WIIPROTO_REQ_RUMBLE;
 169         cmd[1] = 0;
 170
 171         wiiproto_keep_rumble(wdata, &cmd[1]);
 172         wiimote_queue(wdata, cmd, sizeof(cmd));
 173 }
 174
 175 static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
 176 {
 177         __u8 cmd[2];
 178
 179         leds &= WIIPROTO_FLAGS_LEDS;
 180         if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
 181                 return;
 182         wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
 183
 184         cmd[0] = WIIPROTO_REQ_LED;
 185         cmd[1] = 0;
 186
 187         if (leds & WIIPROTO_FLAG_LED1)
 188                 cmd[1] |= 0x10;
 189         if (leds & WIIPROTO_FLAG_LED2)
 190                 cmd[1] |= 0x20;
 191         if (leds & WIIPROTO_FLAG_LED3)
 192                 cmd[1] |= 0x40;
 193         if (leds & WIIPROTO_FLAG_LED4)
 194                 cmd[1] |= 0x80;
 195
 196         wiiproto_keep_rumble(wdata, &cmd[1]);
 197         wiimote_queue(wdata, cmd, sizeof(cmd));
 198 }
 199
 200 /*
 201  * Check what peripherals of the wiimote are currently
 202  * active and select a proper DRM that supports all of
 203  * the requested data inputs.
 204  */
 205 static __u8 select_drm(struct wiimote_data *wdata)
 206 {
 207         __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
 208         bool ext = wiiext_active(wdata);
 209
 210         if (ir == WIIPROTO_FLAG_IR_BASIC) {
 211                 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
 212                         return WIIPROTO_REQ_DRM_KAIE;
 213                 else
 214                         return WIIPROTO_REQ_DRM_KIE;
 215         } else if (ir == WIIPROTO_FLAG_IR_EXT) {
 216                 return WIIPROTO_REQ_DRM_KAI;
 217         } else if (ir == WIIPROTO_FLAG_IR_FULL) {
 218                 return WIIPROTO_REQ_DRM_SKAI1;
 219         } else {
 220                 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
 221                         if (ext)
 222                                 return WIIPROTO_REQ_DRM_KAE;
 223                         else
 224                                 return WIIPROTO_REQ_DRM_KA;
 225                 } else {
 226                         if (ext)
 227                                 return WIIPROTO_REQ_DRM_KE;
 228                         else
 229                                 return WIIPROTO_REQ_DRM_K;
 230                 }
 231         }
 232 }
 233
 234 void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
 235 {
 236         __u8 cmd[3];
 237
 238         if (drm == WIIPROTO_REQ_NULL)
 239                 drm = select_drm(wdata);
 240
 241         cmd[0] = WIIPROTO_REQ_DRM;
 242         cmd[1] = 0;
 243         cmd[2] = drm;
 244
 245         wdata->state.drm = drm;
 246         wiiproto_keep_rumble(wdata, &cmd[1]);
 247         wiimote_queue(wdata, cmd, sizeof(cmd));
 248 }
 249
 250 static void wiiproto_req_status(struct wiimote_data *wdata)
 251 {
 252         __u8 cmd[2];
 253
 254         cmd[0] = WIIPROTO_REQ_SREQ;
 255         cmd[1] = 0;
 256
 257         wiiproto_keep_rumble(wdata, &cmd[1]);
 258         wiimote_queue(wdata, cmd, sizeof(cmd));
 259 }
 260
 261 static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
 262 {
 263         accel = !!accel;
 264         if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 265                 return;
 266
 267         if (accel)
 268                 wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
 269         else
 270                 wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
 271
 272         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 273 }
 274
 275 static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
 276 {
 277         __u8 cmd[2];
 278
 279         cmd[0] = WIIPROTO_REQ_IR1;
 280         cmd[1] = flags;
 281
 282         wiiproto_keep_rumble(wdata, &cmd[1]);
 283         wiimote_queue(wdata, cmd, sizeof(cmd));
 284 }
 285
 286 static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
 287 {
 288         __u8 cmd[2];
 289
 290         cmd[0] = WIIPROTO_REQ_IR2;
 291         cmd[1] = flags;
 292
 293         wiiproto_keep_rumble(wdata, &cmd[1]);
 294         wiimote_queue(wdata, cmd, sizeof(cmd));
 295 }
 296
 297 #define wiiproto_req_wreg(wdata, os, buf, sz) \
 298                         wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
 299
 300 #define wiiproto_req_weeprom(wdata, os, buf, sz) \
 301                         wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
 302
 303 static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
 304                                 __u32 offset, const __u8 *buf, __u8 size)
 305 {
 306         __u8 cmd[22];
 307
 308         if (size > 16 || size == 0) {
 309                 hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
 310                 return;
 311         }
 312
 313         memset(cmd, 0, sizeof(cmd));
 314         cmd[0] = WIIPROTO_REQ_WMEM;
 315         cmd[2] = (offset >> 16) & 0xff;
 316         cmd[3] = (offset >> 8) & 0xff;
 317         cmd[4] = offset & 0xff;
 318         cmd[5] = size;
 319         memcpy(&cmd[6], buf, size);
 320
 321         if (!eeprom)
 322                 cmd[1] |= 0x04;
 323
 324         wiiproto_keep_rumble(wdata, &cmd[1]);
 325         wiimote_queue(wdata, cmd, sizeof(cmd));
 326 }
 327
 328 void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
 329                                                                 __u16 size)
 330 {
 331         __u8 cmd[7];
 332
 333         if (size == 0) {
 334                 hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
 335                 return;
 336         }
 337
 338         cmd[0] = WIIPROTO_REQ_RMEM;
 339         cmd[1] = 0;
 340         cmd[2] = (offset >> 16) & 0xff;
 341         cmd[3] = (offset >> 8) & 0xff;
 342         cmd[4] = offset & 0xff;
 343         cmd[5] = (size >> 8) & 0xff;
 344         cmd[6] = size & 0xff;
 345
 346         if (!eeprom)
 347                 cmd[1] |= 0x04;
 348
 349         wiiproto_keep_rumble(wdata, &cmd[1]);
 350         wiimote_queue(wdata, cmd, sizeof(cmd));
 351 }
 352
 353 /* requries the cmd-mutex to be held */
 354 int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
 355                                                 const __u8 *wmem, __u8 size)
 356 {
 357         unsigned long flags;
 358         int ret;
 359
 360         spin_lock_irqsave(&wdata->state.lock, flags);
 361         wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
 362         wiiproto_req_wreg(wdata, offset, wmem, size);
 363         spin_unlock_irqrestore(&wdata->state.lock, flags);
 364
 365         ret = wiimote_cmd_wait(wdata);
 366         if (!ret && wdata->state.cmd_err)
 367                 ret = -EIO;
 368
 369         return ret;
 370 }
 371
 372 /* requries the cmd-mutex to be held */
 373 ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
 374                                                                 __u8 size)
 375 {
 376         unsigned long flags;
 377         ssize_t ret;
 378
 379         spin_lock_irqsave(&wdata->state.lock, flags);
 380         wdata->state.cmd_read_size = size;
 381         wdata->state.cmd_read_buf = rmem;
 382         wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
 383         wiiproto_req_rreg(wdata, offset, size);
 384         spin_unlock_irqrestore(&wdata->state.lock, flags);
 385
 386         ret = wiimote_cmd_wait(wdata);
 387
 388         spin_lock_irqsave(&wdata->state.lock, flags);
 389         wdata->state.cmd_read_buf = NULL;
 390         spin_unlock_irqrestore(&wdata->state.lock, flags);
 391
 392         if (!ret) {
 393                 if (wdata->state.cmd_read_size == 0)
 394                         ret = -EIO;
 395                 else
 396                         ret = wdata->state.cmd_read_size;
 397         }
 398
 399         return ret;
 400 }
 401
 402 static int wiimote_battery_get_property(struct power_supply *psy,
 403                                                 enum power_supply_property psp,
 404                                                 union power_supply_propval *val)
 405 {
 406         struct wiimote_data *wdata = container_of(psy,
 407                                                 struct wiimote_data, battery);
 408         int ret = 0, state;
 409         unsigned long flags;
 410
 411         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 412                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 413                 return 0;
 414         }
 415
 416         ret = wiimote_cmd_acquire(wdata);
 417         if (ret)
 418                 return ret;
 419
 420         spin_lock_irqsave(&wdata->state.lock, flags);
 421         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 422         wiiproto_req_status(wdata);
 423         spin_unlock_irqrestore(&wdata->state.lock, flags);
 424
 425         ret = wiimote_cmd_wait(wdata);
 426         state = wdata->state.cmd_battery;
 427         wiimote_cmd_release(wdata);
 428
 429         if (ret)
 430                 return ret;
 431
 432         switch (psp) {
 433                 case POWER_SUPPLY_PROP_CAPACITY:
 434                         val->intval = state * 100 / 255;
 435                         break;
 436                 default:
 437                         ret = -EINVAL;
 438                         break;
 439         }
 440
 441         return ret;
 442 }
 443
 444 static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
 445 {
 446         int ret;
 447         unsigned long flags;
 448         __u8 format = 0;
 449         static const __u8 data_enable[] = { 0x01 };
 450         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 451                                                 0x00, 0xaa, 0x00, 0x64 };
 452         static const __u8 data_sens2[] = { 0x63, 0x03 };
 453         static const __u8 data_fin[] = { 0x08 };
 454
 455         spin_lock_irqsave(&wdata->state.lock, flags);
 456
 457         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 458                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 459                 return 0;
 460         }
 461
 462         if (mode == 0) {
 463                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 464                 wiiproto_req_ir1(wdata, 0);
 465                 wiiproto_req_ir2(wdata, 0);
 466                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 467                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 468                 return 0;
 469         }
 470
 471         spin_unlock_irqrestore(&wdata->state.lock, flags);
 472
 473         ret = wiimote_cmd_acquire(wdata);
 474         if (ret)
 475                 return ret;
 476
 477         /* send PIXEL CLOCK ENABLE cmd first */
 478         spin_lock_irqsave(&wdata->state.lock, flags);
 479         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 480         wiiproto_req_ir1(wdata, 0x06);
 481         spin_unlock_irqrestore(&wdata->state.lock, flags);
 482
 483         ret = wiimote_cmd_wait(wdata);
 484         if (ret)
 485                 goto unlock;
 486         if (wdata->state.cmd_err) {
 487                 ret = -EIO;
 488                 goto unlock;
 489         }
 490
 491         /* enable IR LOGIC */
 492         spin_lock_irqsave(&wdata->state.lock, flags);
 493         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 494         wiiproto_req_ir2(wdata, 0x06);
 495         spin_unlock_irqrestore(&wdata->state.lock, flags);
 496
 497         ret = wiimote_cmd_wait(wdata);
 498         if (ret)
 499                 goto unlock;
 500         if (wdata->state.cmd_err) {
 501                 ret = -EIO;
 502                 goto unlock;
 503         }
 504
 505         /* enable IR cam but do not make it send data, yet */
 506         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 507                                                         sizeof(data_enable));
 508         if (ret)
 509                 goto unlock;
 510
 511         /* write first sensitivity block */
 512         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 513                                                         sizeof(data_sens1));
 514         if (ret)
 515                 goto unlock;
 516
 517         /* write second sensitivity block */
 518         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 519                                                         sizeof(data_sens2));
 520         if (ret)
 521                 goto unlock;
 522
 523         /* put IR cam into desired state */
 524         switch (mode) {
 525                 case WIIPROTO_FLAG_IR_FULL:
 526                         format = 5;
 527                         break;
 528                 case WIIPROTO_FLAG_IR_EXT:
 529                         format = 3;
 530                         break;
 531                 case WIIPROTO_FLAG_IR_BASIC:
 532                         format = 1;
 533                         break;
 534         }
 535         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 536         if (ret)
 537                 goto unlock;
 538
 539         /* make IR cam send data */
 540         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 541         if (ret)
 542                 goto unlock;
 543
 544         /* request new DRM mode compatible to IR mode */
 545         spin_lock_irqsave(&wdata->state.lock, flags);
 546         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 547         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 548         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 549         spin_unlock_irqrestore(&wdata->state.lock, flags);
 550
 551 unlock:
 552         wiimote_cmd_release(wdata);
 553         return ret;
 554 }
 555
 556 static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
 557 {
 558         struct wiimote_data *wdata;
 559         struct device *dev = led_dev->dev->parent;
 560         int i;
 561         unsigned long flags;
 562         bool value = false;
 563
 564         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 565
 566         for (i = 0; i < 4; ++i) {
 567                 if (wdata->leds[i] == led_dev) {
 568                         spin_lock_irqsave(&wdata->state.lock, flags);
 569                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 570                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 571                         break;
 572                 }
 573         }
 574
 575         return value ? LED_FULL : LED_OFF;
 576 }
 577
 578 static void wiimote_leds_set(struct led_classdev *led_dev,
 579                                                 enum led_brightness value)
 580 {
 581         struct wiimote_data *wdata;
 582         struct device *dev = led_dev->dev->parent;
 583         int i;
 584         unsigned long flags;
 585         __u8 state, flag;
 586
 587         wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
 588
 589         for (i = 0; i < 4; ++i) {
 590                 if (wdata->leds[i] == led_dev) {
 591                         flag = WIIPROTO_FLAG_LED(i + 1);
 592                         spin_lock_irqsave(&wdata->state.lock, flags);
 593                         state = wdata->state.flags;
 594                         if (value == LED_OFF)
 595                                 wiiproto_req_leds(wdata, state & ~flag);
 596                         else
 597                                 wiiproto_req_leds(wdata, state | flag);
 598                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 599                         break;
 600                 }
 601         }
 602 }
 603
 604 static int wiimote_ff_play(struct input_dev *dev, void *data,
 605                                                         struct ff_effect *eff)
 606 {
 607         struct wiimote_data *wdata = input_get_drvdata(dev);
 608         __u8 value;
 609         unsigned long flags;
 610
 611         /*
 612          * The wiimote supports only a single rumble motor so if any magnitude
 613          * is set to non-zero then we start the rumble motor. If both are set to
 614          * zero, we stop the rumble motor.
 615          */
 616
 617         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 618                 value = 1;
 619         else
 620                 value = 0;
 621
 622         spin_lock_irqsave(&wdata->state.lock, flags);
 623         wiiproto_req_rumble(wdata, value);
 624         spin_unlock_irqrestore(&wdata->state.lock, flags);
 625
 626         return 0;
 627 }
 628
 629 static int wiimote_input_open(struct input_dev *dev)
 630 {
 631         struct wiimote_data *wdata = input_get_drvdata(dev);
 632
 633         return hid_hw_open(wdata->hdev);
 634 }
 635
 636 static void wiimote_input_close(struct input_dev *dev)
 637 {
 638         struct wiimote_data *wdata = input_get_drvdata(dev);
 639
 640         hid_hw_close(wdata->hdev);
 641 }
 642
 643 static int wiimote_accel_open(struct input_dev *dev)
 644 {
 645         struct wiimote_data *wdata = input_get_drvdata(dev);
 646         int ret;
 647         unsigned long flags;
 648
 649         ret = hid_hw_open(wdata->hdev);
 650         if (ret)
 651                 return ret;
 652
 653         spin_lock_irqsave(&wdata->state.lock, flags);
 654         wiiproto_req_accel(wdata, true);
 655         spin_unlock_irqrestore(&wdata->state.lock, flags);
 656
 657         return 0;
 658 }
 659
 660 static void wiimote_accel_close(struct input_dev *dev)
 661 {
 662         struct wiimote_data *wdata = input_get_drvdata(dev);
 663         unsigned long flags;
 664
 665         spin_lock_irqsave(&wdata->state.lock, flags);
 666         wiiproto_req_accel(wdata, false);
 667         spin_unlock_irqrestore(&wdata->state.lock, flags);
 668
 669         hid_hw_close(wdata->hdev);
 670 }
 671
 672 static int wiimote_ir_open(struct input_dev *dev)
 673 {
 674         struct wiimote_data *wdata = input_get_drvdata(dev);
 675         int ret;
 676
 677         ret = hid_hw_open(wdata->hdev);
 678         if (ret)
 679                 return ret;
 680
 681         ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
 682         if (ret) {
 683                 hid_hw_close(wdata->hdev);
 684                 return ret;
 685         }
 686
 687         return 0;
 688 }
 689
 690 static void wiimote_ir_close(struct input_dev *dev)
 691 {
 692         struct wiimote_data *wdata = input_get_drvdata(dev);
 693
 694         wiimote_init_ir(wdata, 0);
 695         hid_hw_close(wdata->hdev);
 696 }
 697
 698 static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
 699 {
 700         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
 701                                                         !!(payload[0] & 0x01));
 702         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_RIGHT],
 703                                                         !!(payload[0] & 0x02));
 704         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_DOWN],
 705                                                         !!(payload[0] & 0x04));
 706         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_UP],
 707                                                         !!(payload[0] & 0x08));
 708         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_PLUS],
 709                                                         !!(payload[0] & 0x10));
 710         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_TWO],
 711                                                         !!(payload[1] & 0x01));
 712         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_ONE],
 713                                                         !!(payload[1] & 0x02));
 714         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_B],
 715                                                         !!(payload[1] & 0x04));
 716         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_A],
 717                                                         !!(payload[1] & 0x08));
 718         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_MINUS],
 719                                                         !!(payload[1] & 0x10));
 720         input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_HOME],
 721                                                         !!(payload[1] & 0x80));
 722         input_sync(wdata->input);
 723 }
 724
 725 static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
 726 {
 727         __u16 x, y, z;
 728
 729         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 730                 return;
 731
 732         /*
 733          * payload is: BB BB XX YY ZZ
 734          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 735          * contain the upper 8 bits of each value. The lower 2 bits are
 736          * contained in the buttons data BB BB.
 737          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 738          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 739          * accel value and bit 6 is the second bit of the Z value.
 740          * The first bit of Y and Z values is not available and always set to 0.
 741          * 0x200 is returned on no movement.
 742          */
 743
 744         x = payload[2] << 2;
 745         y = payload[3] << 2;
 746         z = payload[4] << 2;
 747
 748         x |= (payload[0] >> 5) & 0x3;
 749         y |= (payload[1] >> 4) & 0x2;
 750         z |= (payload[1] >> 5) & 0x2;
 751
 752         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 753         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 754         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 755         input_sync(wdata->accel);
 756 }
 757
 758 #define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 759                                                         ABS_HAT0X, ABS_HAT0Y)
 760 #define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 761                                                         ABS_HAT1X, ABS_HAT1Y)
 762 #define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 763                                                         ABS_HAT2X, ABS_HAT2Y)
 764 #define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 765                                                         ABS_HAT3X, ABS_HAT3Y)
 766
 767 static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
 768                                                 bool packed, __u8 xid, __u8 yid)
 769 {
 770         __u16 x, y;
 771
 772         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 773                 return;
 774
 775         /*
 776          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 777          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 778          * of both.
 779          * If data is packed, then the 3rd byte is put first and slightly
 780          * reordered. This allows to interleave packed and non-packed data to
 781          * have two IR sets in 5 bytes instead of 6.
 782          * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
 783          */
 784
 785         if (packed) {
 786                 x = ir[1] | ((ir[0] & 0x03) << 8);
 787                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 788         } else {
 789                 x = ir[0] | ((ir[2] & 0x30) << 4);
 790                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 791         }
 792
 793         input_report_abs(wdata->ir, xid, x);
 794         input_report_abs(wdata->ir, yid, y);
 795 }
 796
 797 /* reduced status report with "BB BB" key data only */
 798 static void handler_status_K(struct wiimote_data *wdata,
 799                              const __u8 *payload)
 800 {
 801         handler_keys(wdata, payload);
 802
 803         /* on status reports the drm is reset so we need to resend the drm */
 804         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 805 }
 806
 807 /* extended status report with "BB BB LF 00 00 VV" data */
 808 static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
 809 {
 810         handler_status_K(wdata, payload);
 811
 812         wiiext_event(wdata, payload[2] & 0x02);
 813
 814         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
 815                 wdata->state.cmd_battery = payload[5];
 816                 wiimote_cmd_complete(wdata);
 817         }
 818 }
 819
 820 /* reduced generic report with "BB BB" key data only */
 821 static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload)
 822 {
 823         handler_keys(wdata, payload);
 824 }
 825
 826 static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
 827 {
 828         __u16 offset = payload[3] << 8 | payload[4];
 829         __u8 size = (payload[2] >> 4) + 1;
 830         __u8 err = payload[2] & 0x0f;
 831
 832         handler_keys(wdata, payload);
 833
 834         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
 835                 if (err)
 836                         size = 0;
 837                 else if (size > wdata->state.cmd_read_size)
 838                         size = wdata->state.cmd_read_size;
 839
 840                 wdata->state.cmd_read_size = size;
 841                 if (wdata->state.cmd_read_buf)
 842                         memcpy(wdata->state.cmd_read_buf, &payload[5], size);
 843                 wiimote_cmd_complete(wdata);
 844         }
 845 }
 846
 847 static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
 848 {
 849         __u8 err = payload[3];
 850         __u8 cmd = payload[2];
 851
 852         handler_keys(wdata, payload);
 853
 854         if (wiimote_cmd_pending(wdata, cmd, 0)) {
 855                 wdata->state.cmd_err = err;
 856                 wiimote_cmd_complete(wdata);
 857         } else if (err) {
 858                 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
 859                                                                         cmd);
 860         }
 861 }
 862
 863 static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
 864 {
 865         handler_keys(wdata, payload);
 866         handler_accel(wdata, payload);
 867 }
 868
 869 static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
 870 {
 871         handler_keys(wdata, payload);
 872         wiiext_handle(wdata, &payload[2]);
 873 }
 874
 875 static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
 876 {
 877         handler_keys(wdata, payload);
 878         handler_accel(wdata, payload);
 879         ir_to_input0(wdata, &payload[5], false);
 880         ir_to_input1(wdata, &payload[8], false);
 881         ir_to_input2(wdata, &payload[11], false);
 882         ir_to_input3(wdata, &payload[14], false);
 883         input_sync(wdata->ir);
 884 }
 885
 886 static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
 887 {
 888         handler_keys(wdata, payload);
 889         wiiext_handle(wdata, &payload[2]);
 890 }
 891
 892 static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
 893 {
 894         handler_keys(wdata, payload);
 895         ir_to_input0(wdata, &payload[2], false);
 896         ir_to_input1(wdata, &payload[4], true);
 897         ir_to_input2(wdata, &payload[7], false);
 898         ir_to_input3(wdata, &payload[9], true);
 899         input_sync(wdata->ir);
 900         wiiext_handle(wdata, &payload[12]);
 901 }
 902
 903 static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
 904 {
 905         handler_keys(wdata, payload);
 906         handler_accel(wdata, payload);
 907         wiiext_handle(wdata, &payload[5]);
 908 }
 909
 910 static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
 911 {
 912         handler_keys(wdata, payload);
 913         handler_accel(wdata, payload);
 914         ir_to_input0(wdata, &payload[5], false);
 915         ir_to_input1(wdata, &payload[7], true);
 916         ir_to_input2(wdata, &payload[10], false);
 917         ir_to_input3(wdata, &payload[12], true);
 918         input_sync(wdata->ir);
 919         wiiext_handle(wdata, &payload[15]);
 920 }
 921
 922 static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
 923 {
 924         wiiext_handle(wdata, payload);
 925 }
 926
 927 static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
 928 {
 929         handler_keys(wdata, payload);
 930
 931         wdata->state.accel_split[0] = payload[2];
 932         wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
 933         wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
 934
 935         ir_to_input0(wdata, &payload[3], false);
 936         ir_to_input1(wdata, &payload[12], false);
 937         input_sync(wdata->ir);
 938 }
 939
 940 static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
 941 {
 942         __u8 buf[5];
 943
 944         handler_keys(wdata, payload);
 945
 946         wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
 947         wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
 948
 949         buf[0] = 0;
 950         buf[1] = 0;
 951         buf[2] = wdata->state.accel_split[0];
 952         buf[3] = payload[2];
 953         buf[4] = wdata->state.accel_split[1];
 954         handler_accel(wdata, buf);
 955
 956         ir_to_input2(wdata, &payload[3], false);
 957         ir_to_input3(wdata, &payload[12], false);
 958         input_sync(wdata->ir);
 959 }
 960
 961 struct wiiproto_handler {
 962         __u8 id;
 963         size_t size;
 964         void (*func)(struct wiimote_data *wdata, const __u8 *payload);
 965 };
 966
 967 static struct wiiproto_handler handlers[] = {
 968         { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
 969         { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K },
 970         { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
 971         { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K },
 972         { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
 973         { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K },
 974         { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
 975         { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
 976         { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K },
 977         { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
 978         { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K },
 979         { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
 980         { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K },
 981         { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
 982         { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K },
 983         { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
 984         { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K },
 985         { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
 986         { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K },
 987         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
 988         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K },
 989         { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
 990         { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
 991         { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
 992         { .id = 0 }
 993 };
 994
 995 static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
 996                                                         u8 *raw_data, int size)
 997 {
 998         struct wiimote_data *wdata = hid_get_drvdata(hdev);
 999         struct wiiproto_handler *h;
1000         int i;
1001         unsigned long flags;
1002
1003         if (size < 1)
1004                 return -EINVAL;
1005
1006         spin_lock_irqsave(&wdata->state.lock, flags);
1007
1008         for (i = 0; handlers[i].id; ++i) {
1009                 h = &handlers[i];
1010                 if (h->id == raw_data[0] && h->size < size) {
1011                         h->func(wdata, &raw_data[1]);
1012                         break;
1013                 }
1014         }
1015
1016         if (!handlers[i].id)
1017                 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
1018                                                                         size);
1019
1020         spin_unlock_irqrestore(&wdata->state.lock, flags);
1021
1022         return 0;
1023 }
1024
1025 static void wiimote_leds_destroy(struct wiimote_data *wdata)
1026 {
1027         int i;
1028         struct led_classdev *led;
1029
1030         for (i = 0; i < 4; ++i) {
1031                 if (wdata->leds[i]) {
1032                         led = wdata->leds[i];
1033                         wdata->leds[i] = NULL;
1034                         led_classdev_unregister(led);
1035                         kfree(led);
1036                 }
1037         }
1038 }
1039
1040 static int wiimote_leds_create(struct wiimote_data *wdata)
1041 {
1042         int i, ret;
1043         struct device *dev = &wdata->hdev->dev;
1044         size_t namesz = strlen(dev_name(dev)) + 9;
1045         struct led_classdev *led;
1046         char *name;
1047
1048         for (i = 0; i < 4; ++i) {
1049                 led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
1050                 if (!led) {
1051                         ret = -ENOMEM;
1052                         goto err;
1053                 }
1054                 name = (void*)&led[1];
1055                 snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
1056                 led->name = name;
1057                 led->brightness = 0;
1058                 led->max_brightness = 1;
1059                 led->brightness_get = wiimote_leds_get;
1060                 led->brightness_set = wiimote_leds_set;
1061
1062                 ret = led_classdev_register(dev, led);
1063                 if (ret) {
1064                         kfree(led);
1065                         goto err;
1066                 }
1067                 wdata->leds[i] = led;
1068         }
1069
1070         return 0;
1071
1072 err:
1073         wiimote_leds_destroy(wdata);
1074         return ret;
1075 }
1076
1077 static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1078 {
1079         struct wiimote_data *wdata;
1080         int i;
1081
1082         wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1083         if (!wdata)
1084                 return NULL;
1085
1086         wdata->input = input_allocate_device();
1087         if (!wdata->input)
1088                 goto err;
1089
1090         wdata->hdev = hdev;
1091         hid_set_drvdata(hdev, wdata);
1092
1093         input_set_drvdata(wdata->input, wdata);
1094         wdata->input->open = wiimote_input_open;
1095         wdata->input->close = wiimote_input_close;
1096         wdata->input->dev.parent = &wdata->hdev->dev;
1097         wdata->input->id.bustype = wdata->hdev->bus;
1098         wdata->input->id.vendor = wdata->hdev->vendor;
1099         wdata->input->id.product = wdata->hdev->product;
1100         wdata->input->id.version = wdata->hdev->version;
1101         wdata->input->name = WIIMOTE_NAME;
1102
1103         set_bit(EV_KEY, wdata->input->evbit);
1104         for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
1105                 set_bit(wiiproto_keymap[i], wdata->input->keybit);
1106
1107         set_bit(FF_RUMBLE, wdata->input->ffbit);
1108         if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play))
1109                 goto err_input;
1110
1111         wdata->accel = input_allocate_device();
1112         if (!wdata->accel)
1113                 goto err_input;
1114
1115         input_set_drvdata(wdata->accel, wdata);
1116         wdata->accel->open = wiimote_accel_open;
1117         wdata->accel->close = wiimote_accel_close;
1118         wdata->accel->dev.parent = &wdata->hdev->dev;
1119         wdata->accel->id.bustype = wdata->hdev->bus;
1120         wdata->accel->id.vendor = wdata->hdev->vendor;
1121         wdata->accel->id.product = wdata->hdev->product;
1122         wdata->accel->id.version = wdata->hdev->version;
1123         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
1124
1125         set_bit(EV_ABS, wdata->accel->evbit);
1126         set_bit(ABS_RX, wdata->accel->absbit);
1127         set_bit(ABS_RY, wdata->accel->absbit);
1128         set_bit(ABS_RZ, wdata->accel->absbit);
1129         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
1130         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
1131         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
1132
1133         wdata->ir = input_allocate_device();
1134         if (!wdata->ir)
1135                 goto err_ir;
1136
1137         input_set_drvdata(wdata->ir, wdata);
1138         wdata->ir->open = wiimote_ir_open;
1139         wdata->ir->close = wiimote_ir_close;
1140         wdata->ir->dev.parent = &wdata->hdev->dev;
1141         wdata->ir->id.bustype = wdata->hdev->bus;
1142         wdata->ir->id.vendor = wdata->hdev->vendor;
1143         wdata->ir->id.product = wdata->hdev->product;
1144         wdata->ir->id.version = wdata->hdev->version;
1145         wdata->ir->name = WIIMOTE_NAME " IR";
1146
1147         set_bit(EV_ABS, wdata->ir->evbit);
1148         set_bit(ABS_HAT0X, wdata->ir->absbit);
1149         set_bit(ABS_HAT0Y, wdata->ir->absbit);
1150         set_bit(ABS_HAT1X, wdata->ir->absbit);
1151         set_bit(ABS_HAT1Y, wdata->ir->absbit);
1152         set_bit(ABS_HAT2X, wdata->ir->absbit);
1153         set_bit(ABS_HAT2Y, wdata->ir->absbit);
1154         set_bit(ABS_HAT3X, wdata->ir->absbit);
1155         set_bit(ABS_HAT3Y, wdata->ir->absbit);
1156         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
1157         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
1158         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
1159         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
1160         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
1161         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
1162         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
1163         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
1164
1165         spin_lock_init(&wdata->queue.lock);
1166         INIT_WORK(&wdata->queue.worker, wiimote_queue_worker);
1167
1168         spin_lock_init(&wdata->state.lock);
1169         init_completion(&wdata->state.ready);
1170         mutex_init(&wdata->state.sync);
1171         wdata->state.drm = WIIPROTO_REQ_DRM_K;
1172
1173         return wdata;
1174
1175 err_ir:
1176         input_free_device(wdata->accel);
1177 err_input:
1178         input_free_device(wdata->input);
1179 err:
1180         kfree(wdata);
1181         return NULL;
1182 }
1183
1184 static void wiimote_destroy(struct wiimote_data *wdata)
1185 {
1186         wiidebug_deinit(wdata);
1187         wiiext_deinit(wdata);
1188         wiimote_leds_destroy(wdata);
1189
1190         power_supply_unregister(&wdata->battery);
1191         kfree(wdata->battery.name);
1192         input_unregister_device(wdata->accel);
1193         input_unregister_device(wdata->ir);
1194         input_unregister_device(wdata->input);
1195         cancel_work_sync(&wdata->queue.worker);
1196         hid_hw_stop(wdata->hdev);
1197
1198         kfree(wdata);
1199 }
1200
1201 static int wiimote_hid_probe(struct hid_device *hdev,
1202                                 const struct hid_device_id *id)
1203 {
1204         struct wiimote_data *wdata;
1205         int ret;
1206
1207         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1208
1209         wdata = wiimote_create(hdev);
1210         if (!wdata) {
1211                 hid_err(hdev, "Can't alloc device\n");
1212                 return -ENOMEM;
1213         }
1214
1215         ret = hid_parse(hdev);
1216         if (ret) {
1217                 hid_err(hdev, "HID parse failed\n");
1218                 goto err;
1219         }
1220
1221         ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1222         if (ret) {
1223                 hid_err(hdev, "HW start failed\n");
1224                 goto err;
1225         }
1226
1227         ret = input_register_device(wdata->accel);
1228         if (ret) {
1229                 hid_err(hdev, "Cannot register input device\n");
1230                 goto err_stop;
1231         }
1232
1233         ret = input_register_device(wdata->ir);
1234         if (ret) {
1235                 hid_err(hdev, "Cannot register input device\n");
1236                 goto err_ir;
1237         }
1238
1239         ret = input_register_device(wdata->input);
1240         if (ret) {
1241                 hid_err(hdev, "Cannot register input device\n");
1242                 goto err_input;
1243         }
1244
1245         wdata->battery.properties = wiimote_battery_props;
1246         wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
1247         wdata->battery.get_property = wiimote_battery_get_property;
1248         wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1249         wdata->battery.use_for_apm = 0;
1250         wdata->battery.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
1251                                         wdata->hdev->uniq);
1252         if (!wdata->battery.name) {
1253                 ret = -ENOMEM;
1254                 goto err_battery_name;
1255         }
1256
1257         ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
1258         if (ret) {
1259                 hid_err(hdev, "Cannot register battery device\n");
1260                 goto err_battery;
1261         }
1262
1263         power_supply_powers(&wdata->battery, &hdev->dev);
1264
1265         ret = wiimote_leds_create(wdata);
1266         if (ret)
1267                 goto err_free;
1268
1269         ret = wiiext_init(wdata);
1270         if (ret)
1271                 goto err_free;
1272
1273         ret = wiidebug_init(wdata);
1274         if (ret)
1275                 goto err_free;
1276
1277         hid_info(hdev, "New device registered\n");
1278
1279         /* by default set led1 after device initialization */
1280         spin_lock_irq(&wdata->state.lock);
1281         wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
1282         spin_unlock_irq(&wdata->state.lock);
1283
1284         return 0;
1285
1286 err_free:
1287         wiimote_destroy(wdata);
1288         return ret;
1289
1290 err_battery:
1291         kfree(wdata->battery.name);
1292 err_battery_name:
1293         input_unregister_device(wdata->input);
1294         wdata->input = NULL;
1295 err_input:
1296         input_unregister_device(wdata->ir);
1297         wdata->ir = NULL;
1298 err_ir:
1299         input_unregister_device(wdata->accel);
1300         wdata->accel = NULL;
1301 err_stop:
1302         hid_hw_stop(hdev);
1303 err:
1304         input_free_device(wdata->ir);
1305         input_free_device(wdata->accel);
1306         input_free_device(wdata->input);
1307         kfree(wdata);
1308         return ret;
1309 }
1310
1311 static void wiimote_hid_remove(struct hid_device *hdev)
1312 {
1313         struct wiimote_data *wdata = hid_get_drvdata(hdev);
1314
1315         hid_info(hdev, "Device removed\n");
1316         wiimote_destroy(wdata);
1317 }
1318
1319 static const struct hid_device_id wiimote_hid_devices[] = {
1320         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1321                                 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1322         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1323                                 USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1324         { }
1325 };
1326 MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1327
1328 static struct hid_driver wiimote_hid_driver = {
1329         .name = "wiimote",
1330         .id_table = wiimote_hid_devices,
1331         .probe = wiimote_hid_probe,
1332         .remove = wiimote_hid_remove,
1333         .raw_event = wiimote_hid_event,
1334 };
1335 module_hid_driver(wiimote_hid_driver);
1336
1337 MODULE_LICENSE("GPL");
1338 MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1339 MODULE_DESCRIPTION("Driver for Nintendo Wii / Wii U peripherals");