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/module.h>
  18 #include <linux/mutex.h>
  19 #include <linux/spinlock.h>
  20 #include "hid-ids.h"
  21 #include "hid-wiimote.h"
  22
  23 /* output queue handling */
  24
  25 static int wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
  26                             size_t count)
  27 {
  28         __u8 *buf;
  29         int ret;
  30
  31         if (!hdev->hid_output_raw_report)
  32                 return -ENODEV;
  33
  34         buf = kmemdup(buffer, count, GFP_KERNEL);
  35         if (!buf)
  36                 return -ENOMEM;
  37
  38         ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
  39
  40         kfree(buf);
  41         return ret;
  42 }
  43
  44 static void wiimote_queue_worker(struct work_struct *work)
  45 {
  46         struct wiimote_queue *queue = container_of(work, struct wiimote_queue,
  47                                                    worker);
  48         struct wiimote_data *wdata = container_of(queue, struct wiimote_data,
  49                                                   queue);
  50         unsigned long flags;
  51         int ret;
  52
  53         spin_lock_irqsave(&wdata->queue.lock, flags);
  54
  55         while (wdata->queue.head != wdata->queue.tail) {
  56                 spin_unlock_irqrestore(&wdata->queue.lock, flags);
  57                 ret = wiimote_hid_send(wdata->hdev,
  58                                  wdata->queue.outq[wdata->queue.tail].data,
  59                                  wdata->queue.outq[wdata->queue.tail].size);
  60                 if (ret < 0) {
  61                         spin_lock_irqsave(&wdata->state.lock, flags);
  62                         wiimote_cmd_abort(wdata);
  63                         spin_unlock_irqrestore(&wdata->state.lock, flags);
  64                 }
  65                 spin_lock_irqsave(&wdata->queue.lock, flags);
  66
  67                 wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE;
  68         }
  69
  70         spin_unlock_irqrestore(&wdata->queue.lock, flags);
  71 }
  72
  73 static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
  74                                                                 size_t count)
  75 {
  76         unsigned long flags;
  77         __u8 newhead;
  78
  79         if (count > HID_MAX_BUFFER_SIZE) {
  80                 hid_warn(wdata->hdev, "Sending too large output report\n");
  81
  82                 spin_lock_irqsave(&wdata->queue.lock, flags);
  83                 goto out_error;
  84         }
  85
  86         /*
  87          * Copy new request into our output queue and check whether the
  88          * queue is full. If it is full, discard this request.
  89          * If it is empty we need to start a new worker that will
  90          * send out the buffer to the hid device.
  91          * If the queue is not empty, then there must be a worker
  92          * that is currently sending out our buffer and this worker
  93          * will reschedule itself until the queue is empty.
  94          */
  95
  96         spin_lock_irqsave(&wdata->queue.lock, flags);
  97
  98         memcpy(wdata->queue.outq[wdata->queue.head].data, buffer, count);
  99         wdata->queue.outq[wdata->queue.head].size = count;
 100         newhead = (wdata->queue.head + 1) % WIIMOTE_BUFSIZE;
 101
 102         if (wdata->queue.head == wdata->queue.tail) {
 103                 wdata->queue.head = newhead;
 104                 schedule_work(&wdata->queue.worker);
 105         } else if (newhead != wdata->queue.tail) {
 106                 wdata->queue.head = newhead;
 107         } else {
 108                 hid_warn(wdata->hdev, "Output queue is full");
 109                 goto out_error;
 110         }
 111
 112         goto out_unlock;
 113
 114 out_error:
 115         wiimote_cmd_abort(wdata);
 116 out_unlock:
 117         spin_unlock_irqrestore(&wdata->queue.lock, flags);
 118 }
 119
 120 /*
 121  * This sets the rumble bit on the given output report if rumble is
 122  * currently enabled.
 123  * \cmd1 must point to the second byte in the output report => &cmd[1]
 124  * This must be called on nearly every output report before passing it
 125  * into the output queue!
 126  */
 127 static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
 128 {
 129         if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
 130                 *cmd1 |= 0x01;
 131 }
 132
 133 void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
 134 {
 135         __u8 cmd[2];
 136
 137         rumble = !!rumble;
 138         if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
 139                 return;
 140
 141         if (rumble)
 142                 wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
 143         else
 144                 wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
 145
 146         cmd[0] = WIIPROTO_REQ_RUMBLE;
 147         cmd[1] = 0;
 148
 149         wiiproto_keep_rumble(wdata, &cmd[1]);
 150         wiimote_queue(wdata, cmd, sizeof(cmd));
 151 }
 152
 153 void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
 154 {
 155         __u8 cmd[2];
 156
 157         leds &= WIIPROTO_FLAGS_LEDS;
 158         if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
 159                 return;
 160         wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
 161
 162         cmd[0] = WIIPROTO_REQ_LED;
 163         cmd[1] = 0;
 164
 165         if (leds & WIIPROTO_FLAG_LED1)
 166                 cmd[1] |= 0x10;
 167         if (leds & WIIPROTO_FLAG_LED2)
 168                 cmd[1] |= 0x20;
 169         if (leds & WIIPROTO_FLAG_LED3)
 170                 cmd[1] |= 0x40;
 171         if (leds & WIIPROTO_FLAG_LED4)
 172                 cmd[1] |= 0x80;
 173
 174         wiiproto_keep_rumble(wdata, &cmd[1]);
 175         wiimote_queue(wdata, cmd, sizeof(cmd));
 176 }
 177
 178 /*
 179  * Check what peripherals of the wiimote are currently
 180  * active and select a proper DRM that supports all of
 181  * the requested data inputs.
 182  */
 183 static __u8 select_drm(struct wiimote_data *wdata)
 184 {
 185         __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
 186         bool ext = wiiext_active(wdata);
 187
 188         if (ir == WIIPROTO_FLAG_IR_BASIC) {
 189                 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
 190                         return WIIPROTO_REQ_DRM_KAIE;
 191                 else
 192                         return WIIPROTO_REQ_DRM_KIE;
 193         } else if (ir == WIIPROTO_FLAG_IR_EXT) {
 194                 return WIIPROTO_REQ_DRM_KAI;
 195         } else if (ir == WIIPROTO_FLAG_IR_FULL) {
 196                 return WIIPROTO_REQ_DRM_SKAI1;
 197         } else {
 198                 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
 199                         if (ext)
 200                                 return WIIPROTO_REQ_DRM_KAE;
 201                         else
 202                                 return WIIPROTO_REQ_DRM_KA;
 203                 } else {
 204                         if (ext)
 205                                 return WIIPROTO_REQ_DRM_KE;
 206                         else
 207                                 return WIIPROTO_REQ_DRM_K;
 208                 }
 209         }
 210 }
 211
 212 void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
 213 {
 214         __u8 cmd[3];
 215
 216         if (drm == WIIPROTO_REQ_NULL)
 217                 drm = select_drm(wdata);
 218
 219         cmd[0] = WIIPROTO_REQ_DRM;
 220         cmd[1] = 0;
 221         cmd[2] = drm;
 222
 223         wdata->state.drm = drm;
 224         wiiproto_keep_rumble(wdata, &cmd[1]);
 225         wiimote_queue(wdata, cmd, sizeof(cmd));
 226 }
 227
 228 void wiiproto_req_status(struct wiimote_data *wdata)
 229 {
 230         __u8 cmd[2];
 231
 232         cmd[0] = WIIPROTO_REQ_SREQ;
 233         cmd[1] = 0;
 234
 235         wiiproto_keep_rumble(wdata, &cmd[1]);
 236         wiimote_queue(wdata, cmd, sizeof(cmd));
 237 }
 238
 239 static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
 240 {
 241         accel = !!accel;
 242         if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 243                 return;
 244
 245         if (accel)
 246                 wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
 247         else
 248                 wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
 249
 250         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 251 }
 252
 253 static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
 254 {
 255         __u8 cmd[2];
 256
 257         cmd[0] = WIIPROTO_REQ_IR1;
 258         cmd[1] = flags;
 259
 260         wiiproto_keep_rumble(wdata, &cmd[1]);
 261         wiimote_queue(wdata, cmd, sizeof(cmd));
 262 }
 263
 264 static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
 265 {
 266         __u8 cmd[2];
 267
 268         cmd[0] = WIIPROTO_REQ_IR2;
 269         cmd[1] = flags;
 270
 271         wiiproto_keep_rumble(wdata, &cmd[1]);
 272         wiimote_queue(wdata, cmd, sizeof(cmd));
 273 }
 274
 275 #define wiiproto_req_wreg(wdata, os, buf, sz) \
 276                         wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
 277
 278 #define wiiproto_req_weeprom(wdata, os, buf, sz) \
 279                         wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
 280
 281 static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
 282                                 __u32 offset, const __u8 *buf, __u8 size)
 283 {
 284         __u8 cmd[22];
 285
 286         if (size > 16 || size == 0) {
 287                 hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
 288                 return;
 289         }
 290
 291         memset(cmd, 0, sizeof(cmd));
 292         cmd[0] = WIIPROTO_REQ_WMEM;
 293         cmd[2] = (offset >> 16) & 0xff;
 294         cmd[3] = (offset >> 8) & 0xff;
 295         cmd[4] = offset & 0xff;
 296         cmd[5] = size;
 297         memcpy(&cmd[6], buf, size);
 298
 299         if (!eeprom)
 300                 cmd[1] |= 0x04;
 301
 302         wiiproto_keep_rumble(wdata, &cmd[1]);
 303         wiimote_queue(wdata, cmd, sizeof(cmd));
 304 }
 305
 306 void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
 307                                                                 __u16 size)
 308 {
 309         __u8 cmd[7];
 310
 311         if (size == 0) {
 312                 hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
 313                 return;
 314         }
 315
 316         cmd[0] = WIIPROTO_REQ_RMEM;
 317         cmd[1] = 0;
 318         cmd[2] = (offset >> 16) & 0xff;
 319         cmd[3] = (offset >> 8) & 0xff;
 320         cmd[4] = offset & 0xff;
 321         cmd[5] = (size >> 8) & 0xff;
 322         cmd[6] = size & 0xff;
 323
 324         if (!eeprom)
 325                 cmd[1] |= 0x04;
 326
 327         wiiproto_keep_rumble(wdata, &cmd[1]);
 328         wiimote_queue(wdata, cmd, sizeof(cmd));
 329 }
 330
 331 /* requries the cmd-mutex to be held */
 332 int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
 333                                                 const __u8 *wmem, __u8 size)
 334 {
 335         unsigned long flags;
 336         int ret;
 337
 338         spin_lock_irqsave(&wdata->state.lock, flags);
 339         wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
 340         wiiproto_req_wreg(wdata, offset, wmem, size);
 341         spin_unlock_irqrestore(&wdata->state.lock, flags);
 342
 343         ret = wiimote_cmd_wait(wdata);
 344         if (!ret && wdata->state.cmd_err)
 345                 ret = -EIO;
 346
 347         return ret;
 348 }
 349
 350 /* requries the cmd-mutex to be held */
 351 ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
 352                                                                 __u8 size)
 353 {
 354         unsigned long flags;
 355         ssize_t ret;
 356
 357         spin_lock_irqsave(&wdata->state.lock, flags);
 358         wdata->state.cmd_read_size = size;
 359         wdata->state.cmd_read_buf = rmem;
 360         wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
 361         wiiproto_req_rreg(wdata, offset, size);
 362         spin_unlock_irqrestore(&wdata->state.lock, flags);
 363
 364         ret = wiimote_cmd_wait(wdata);
 365
 366         spin_lock_irqsave(&wdata->state.lock, flags);
 367         wdata->state.cmd_read_buf = NULL;
 368         spin_unlock_irqrestore(&wdata->state.lock, flags);
 369
 370         if (!ret) {
 371                 if (wdata->state.cmd_read_size == 0)
 372                         ret = -EIO;
 373                 else
 374                         ret = wdata->state.cmd_read_size;
 375         }
 376
 377         return ret;
 378 }
 379
 380 /* requires the cmd-mutex to be held */
 381 static int wiimote_cmd_init_ext(struct wiimote_data *wdata)
 382 {
 383         __u8 wmem;
 384         int ret;
 385
 386         /* initialize extension */
 387         wmem = 0x55;
 388         ret = wiimote_cmd_write(wdata, 0xa400f0, &wmem, sizeof(wmem));
 389         if (ret)
 390                 return ret;
 391
 392         /* disable default encryption */
 393         wmem = 0x0;
 394         ret = wiimote_cmd_write(wdata, 0xa400fb, &wmem, sizeof(wmem));
 395         if (ret)
 396                 return ret;
 397
 398         return 0;
 399 }
 400
 401 /* requires the cmd-mutex to be held */
 402 static __u8 wiimote_cmd_read_ext(struct wiimote_data *wdata)
 403 {
 404         __u8 rmem[6];
 405         int ret;
 406
 407         /* read extension ID */
 408         ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6);
 409         if (ret != 6)
 410                 return WIIMOTE_EXT_NONE;
 411
 412         if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff &&
 413             rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff)
 414                 return WIIMOTE_EXT_NONE;
 415
 416         return WIIMOTE_EXT_UNKNOWN;
 417 }
 418
 419 static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
 420 {
 421         int ret;
 422         unsigned long flags;
 423         __u8 format = 0;
 424         static const __u8 data_enable[] = { 0x01 };
 425         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 426                                                 0x00, 0xaa, 0x00, 0x64 };
 427         static const __u8 data_sens2[] = { 0x63, 0x03 };
 428         static const __u8 data_fin[] = { 0x08 };
 429
 430         spin_lock_irqsave(&wdata->state.lock, flags);
 431
 432         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 433                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 434                 return 0;
 435         }
 436
 437         if (mode == 0) {
 438                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 439                 wiiproto_req_ir1(wdata, 0);
 440                 wiiproto_req_ir2(wdata, 0);
 441                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 442                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 443                 return 0;
 444         }
 445
 446         spin_unlock_irqrestore(&wdata->state.lock, flags);
 447
 448         ret = wiimote_cmd_acquire(wdata);
 449         if (ret)
 450                 return ret;
 451
 452         /* send PIXEL CLOCK ENABLE cmd first */
 453         spin_lock_irqsave(&wdata->state.lock, flags);
 454         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 455         wiiproto_req_ir1(wdata, 0x06);
 456         spin_unlock_irqrestore(&wdata->state.lock, flags);
 457
 458         ret = wiimote_cmd_wait(wdata);
 459         if (ret)
 460                 goto unlock;
 461         if (wdata->state.cmd_err) {
 462                 ret = -EIO;
 463                 goto unlock;
 464         }
 465
 466         /* enable IR LOGIC */
 467         spin_lock_irqsave(&wdata->state.lock, flags);
 468         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 469         wiiproto_req_ir2(wdata, 0x06);
 470         spin_unlock_irqrestore(&wdata->state.lock, flags);
 471
 472         ret = wiimote_cmd_wait(wdata);
 473         if (ret)
 474                 goto unlock;
 475         if (wdata->state.cmd_err) {
 476                 ret = -EIO;
 477                 goto unlock;
 478         }
 479
 480         /* enable IR cam but do not make it send data, yet */
 481         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 482                                                         sizeof(data_enable));
 483         if (ret)
 484                 goto unlock;
 485
 486         /* write first sensitivity block */
 487         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 488                                                         sizeof(data_sens1));
 489         if (ret)
 490                 goto unlock;
 491
 492         /* write second sensitivity block */
 493         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 494                                                         sizeof(data_sens2));
 495         if (ret)
 496                 goto unlock;
 497
 498         /* put IR cam into desired state */
 499         switch (mode) {
 500                 case WIIPROTO_FLAG_IR_FULL:
 501                         format = 5;
 502                         break;
 503                 case WIIPROTO_FLAG_IR_EXT:
 504                         format = 3;
 505                         break;
 506                 case WIIPROTO_FLAG_IR_BASIC:
 507                         format = 1;
 508                         break;
 509         }
 510         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 511         if (ret)
 512                 goto unlock;
 513
 514         /* make IR cam send data */
 515         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 516         if (ret)
 517                 goto unlock;
 518
 519         /* request new DRM mode compatible to IR mode */
 520         spin_lock_irqsave(&wdata->state.lock, flags);
 521         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 522         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 523         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 524         spin_unlock_irqrestore(&wdata->state.lock, flags);
 525
 526 unlock:
 527         wiimote_cmd_release(wdata);
 528         return ret;
 529 }
 530
 531 static int wiimote_accel_open(struct input_dev *dev)
 532 {
 533         struct wiimote_data *wdata = input_get_drvdata(dev);
 534         unsigned long flags;
 535
 536         spin_lock_irqsave(&wdata->state.lock, flags);
 537         wiiproto_req_accel(wdata, true);
 538         spin_unlock_irqrestore(&wdata->state.lock, flags);
 539
 540         return 0;
 541 }
 542
 543 static void wiimote_accel_close(struct input_dev *dev)
 544 {
 545         struct wiimote_data *wdata = input_get_drvdata(dev);
 546         unsigned long flags;
 547
 548         spin_lock_irqsave(&wdata->state.lock, flags);
 549         wiiproto_req_accel(wdata, false);
 550         spin_unlock_irqrestore(&wdata->state.lock, flags);
 551 }
 552
 553 static int wiimote_ir_open(struct input_dev *dev)
 554 {
 555         struct wiimote_data *wdata = input_get_drvdata(dev);
 556
 557         return wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
 558 }
 559
 560 static void wiimote_ir_close(struct input_dev *dev)
 561 {
 562         struct wiimote_data *wdata = input_get_drvdata(dev);
 563
 564         wiimote_init_ir(wdata, 0);
 565 }
 566
 567 /* device module handling */
 568
 569 static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = {
 570         [WIIMOTE_DEV_PENDING] = (const __u8[]){
 571                 WIIMOD_NULL,
 572         },
 573         [WIIMOTE_DEV_UNKNOWN] = (const __u8[]){
 574                 WIIMOD_NULL,
 575         },
 576         [WIIMOTE_DEV_GENERIC] = (const __u8[]){
 577                 WIIMOD_KEYS,
 578                 WIIMOD_RUMBLE,
 579                 WIIMOD_BATTERY,
 580                 WIIMOD_LED1,
 581                 WIIMOD_LED2,
 582                 WIIMOD_LED3,
 583                 WIIMOD_LED4,
 584                 WIIMOD_NULL,
 585         },
 586         [WIIMOTE_DEV_GEN10] = (const __u8[]){
 587                 WIIMOD_KEYS,
 588                 WIIMOD_RUMBLE,
 589                 WIIMOD_BATTERY,
 590                 WIIMOD_LED1,
 591                 WIIMOD_LED2,
 592                 WIIMOD_LED3,
 593                 WIIMOD_LED4,
 594                 WIIMOD_NULL,
 595         },
 596         [WIIMOTE_DEV_GEN20] = (const __u8[]){
 597                 WIIMOD_KEYS,
 598                 WIIMOD_RUMBLE,
 599                 WIIMOD_BATTERY,
 600                 WIIMOD_LED1,
 601                 WIIMOD_LED2,
 602                 WIIMOD_LED3,
 603                 WIIMOD_LED4,
 604                 WIIMOD_NULL,
 605         },
 606 };
 607
 608 static void wiimote_modules_load(struct wiimote_data *wdata,
 609                                  unsigned int devtype)
 610 {
 611         bool need_input = false;
 612         const __u8 *mods, *iter;
 613         const struct wiimod_ops *ops;
 614         int ret;
 615
 616         mods = wiimote_devtype_mods[devtype];
 617
 618         for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
 619                 if (wiimod_table[*iter]->flags & WIIMOD_FLAG_INPUT) {
 620                         need_input = true;
 621                         break;
 622                 }
 623         }
 624
 625         if (need_input) {
 626                 wdata->input = input_allocate_device();
 627                 if (!wdata->input)
 628                         return;
 629
 630                 input_set_drvdata(wdata->input, wdata);
 631                 wdata->input->dev.parent = &wdata->hdev->dev;
 632                 wdata->input->id.bustype = wdata->hdev->bus;
 633                 wdata->input->id.vendor = wdata->hdev->vendor;
 634                 wdata->input->id.product = wdata->hdev->product;
 635                 wdata->input->id.version = wdata->hdev->version;
 636                 wdata->input->name = WIIMOTE_NAME;
 637         }
 638
 639         for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
 640                 ops = wiimod_table[*iter];
 641                 if (!ops->probe)
 642                         continue;
 643
 644                 ret = ops->probe(ops, wdata);
 645                 if (ret)
 646                         goto error;
 647         }
 648
 649         if (wdata->input) {
 650                 ret = input_register_device(wdata->input);
 651                 if (ret)
 652                         goto error;
 653         }
 654
 655         spin_lock_irq(&wdata->state.lock);
 656         wdata->state.devtype = devtype;
 657         spin_unlock_irq(&wdata->state.lock);
 658         return;
 659
 660 error:
 661         for ( ; iter-- != mods; ) {
 662                 ops = wiimod_table[*iter];
 663                 if (ops->remove)
 664                         ops->remove(ops, wdata);
 665         }
 666
 667         if (wdata->input) {
 668                 input_free_device(wdata->input);
 669                 wdata->input = NULL;
 670         }
 671 }
 672
 673 static void wiimote_modules_unload(struct wiimote_data *wdata)
 674 {
 675         const __u8 *mods, *iter;
 676         const struct wiimod_ops *ops;
 677         unsigned long flags;
 678
 679         mods = wiimote_devtype_mods[wdata->state.devtype];
 680
 681         spin_lock_irqsave(&wdata->state.lock, flags);
 682         wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
 683         spin_unlock_irqrestore(&wdata->state.lock, flags);
 684
 685         /* find end of list */
 686         for (iter = mods; *iter != WIIMOD_NULL; ++iter)
 687                 /* empty */ ;
 688
 689         if (wdata->input) {
 690                 input_get_device(wdata->input);
 691                 input_unregister_device(wdata->input);
 692         }
 693
 694         for ( ; iter-- != mods; ) {
 695                 ops = wiimod_table[*iter];
 696                 if (ops->remove)
 697                         ops->remove(ops, wdata);
 698         }
 699
 700         if (wdata->input) {
 701                 input_put_device(wdata->input);
 702                 wdata->input = NULL;
 703         }
 704 }
 705
 706 /* device (re-)initialization and detection */
 707
 708 static const char *wiimote_devtype_names[WIIMOTE_DEV_NUM] = {
 709         [WIIMOTE_DEV_PENDING] = "Pending",
 710         [WIIMOTE_DEV_UNKNOWN] = "Unknown",
 711         [WIIMOTE_DEV_GENERIC] = "Generic",
 712         [WIIMOTE_DEV_GEN10] = "Nintendo Wii Remote (Gen 1)",
 713         [WIIMOTE_DEV_GEN20] = "Nintendo Wii Remote Plus (Gen 2)",
 714 };
 715
 716 /* Try to guess the device type based on all collected information. We
 717  * first try to detect by static extension types, then VID/PID and the
 718  * device name. If we cannot detect the device, we use
 719  * WIIMOTE_DEV_GENERIC so all modules will get probed on the device. */
 720 static void wiimote_init_set_type(struct wiimote_data *wdata,
 721                                   __u8 exttype)
 722 {
 723         __u8 devtype = WIIMOTE_DEV_GENERIC;
 724         __u16 vendor, product;
 725         const char *name;
 726
 727         vendor = wdata->hdev->vendor;
 728         product = wdata->hdev->product;
 729         name = wdata->hdev->name;
 730
 731         if (!strcmp(name, "Nintendo RVL-CNT-01")) {
 732                 devtype = WIIMOTE_DEV_GEN10;
 733                 goto done;
 734         } else if (!strcmp(name, "Nintendo RVL-CNT-01-TR")) {
 735                 devtype = WIIMOTE_DEV_GEN20;
 736                 goto done;
 737         }
 738
 739         if (vendor == USB_VENDOR_ID_NINTENDO) {
 740                 if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE) {
 741                         devtype = WIIMOTE_DEV_GEN10;
 742                         goto done;
 743                 } else if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE2) {
 744                         devtype = WIIMOTE_DEV_GEN20;
 745                         goto done;
 746                 }
 747         }
 748
 749 done:
 750         if (devtype == WIIMOTE_DEV_GENERIC)
 751                 hid_info(wdata->hdev, "cannot detect device; NAME: %s VID: %04x PID: %04x EXT: %04x\n",
 752                         name, vendor, product, exttype);
 753         else
 754                 hid_info(wdata->hdev, "detected device: %s\n",
 755                          wiimote_devtype_names[devtype]);
 756
 757         wiimote_modules_load(wdata, devtype);
 758 }
 759
 760 static void wiimote_init_detect(struct wiimote_data *wdata)
 761 {
 762         __u8 exttype = WIIMOTE_EXT_NONE;
 763         bool ext;
 764         int ret;
 765
 766         wiimote_cmd_acquire_noint(wdata);
 767
 768         spin_lock_irq(&wdata->state.lock);
 769         wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
 770         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 771         wiiproto_req_status(wdata);
 772         spin_unlock_irq(&wdata->state.lock);
 773
 774         ret = wiimote_cmd_wait_noint(wdata);
 775         if (ret)
 776                 goto out_release;
 777
 778         spin_lock_irq(&wdata->state.lock);
 779         ext = wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED;
 780         spin_unlock_irq(&wdata->state.lock);
 781
 782         if (!ext)
 783                 goto out_release;
 784
 785         wiimote_cmd_init_ext(wdata);
 786         exttype = wiimote_cmd_read_ext(wdata);
 787
 788 out_release:
 789         wiimote_cmd_release(wdata);
 790         wiimote_init_set_type(wdata, exttype);
 791 }
 792
 793 static void wiimote_init_worker(struct work_struct *work)
 794 {
 795         struct wiimote_data *wdata = container_of(work, struct wiimote_data,
 796                                                   init_worker);
 797
 798         if (wdata->state.devtype == WIIMOTE_DEV_PENDING)
 799                 wiimote_init_detect(wdata);
 800 }
 801
 802 /* protocol handlers */
 803
 804 static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
 805 {
 806         const __u8 *iter, *mods;
 807         const struct wiimod_ops *ops;
 808
 809         mods = wiimote_devtype_mods[wdata->state.devtype];
 810         for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
 811                 ops = wiimod_table[*iter];
 812                 if (ops->in_keys) {
 813                         ops->in_keys(wdata, payload);
 814                         break;
 815                 }
 816         }
 817 }
 818
 819 static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
 820 {
 821         __u16 x, y, z;
 822
 823         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 824                 return;
 825
 826         /*
 827          * payload is: BB BB XX YY ZZ
 828          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 829          * contain the upper 8 bits of each value. The lower 2 bits are
 830          * contained in the buttons data BB BB.
 831          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 832          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 833          * accel value and bit 6 is the second bit of the Z value.
 834          * The first bit of Y and Z values is not available and always set to 0.
 835          * 0x200 is returned on no movement.
 836          */
 837
 838         x = payload[2] << 2;
 839         y = payload[3] << 2;
 840         z = payload[4] << 2;
 841
 842         x |= (payload[0] >> 5) & 0x3;
 843         y |= (payload[1] >> 4) & 0x2;
 844         z |= (payload[1] >> 5) & 0x2;
 845
 846         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 847         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 848         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 849         input_sync(wdata->accel);
 850 }
 851
 852 #define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 853                                                         ABS_HAT0X, ABS_HAT0Y)
 854 #define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 855                                                         ABS_HAT1X, ABS_HAT1Y)
 856 #define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 857                                                         ABS_HAT2X, ABS_HAT2Y)
 858 #define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
 859                                                         ABS_HAT3X, ABS_HAT3Y)
 860
 861 static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
 862                                                 bool packed, __u8 xid, __u8 yid)
 863 {
 864         __u16 x, y;
 865
 866         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 867                 return;
 868
 869         /*
 870          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 871          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 872          * of both.
 873          * If data is packed, then the 3rd byte is put first and slightly
 874          * reordered. This allows to interleave packed and non-packed data to
 875          * have two IR sets in 5 bytes instead of 6.
 876          * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
 877          */
 878
 879         if (packed) {
 880                 x = ir[1] | ((ir[0] & 0x03) << 8);
 881                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 882         } else {
 883                 x = ir[0] | ((ir[2] & 0x30) << 4);
 884                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 885         }
 886
 887         input_report_abs(wdata->ir, xid, x);
 888         input_report_abs(wdata->ir, yid, y);
 889 }
 890
 891 /* reduced status report with "BB BB" key data only */
 892 static void handler_status_K(struct wiimote_data *wdata,
 893                              const __u8 *payload)
 894 {
 895         handler_keys(wdata, payload);
 896
 897         /* on status reports the drm is reset so we need to resend the drm */
 898         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 899 }
 900
 901 /* extended status report with "BB BB LF 00 00 VV" data */
 902 static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
 903 {
 904         handler_status_K(wdata, payload);
 905
 906         /* update extension status */
 907         if (payload[2] & 0x02) {
 908                 wdata->state.flags |= WIIPROTO_FLAG_EXT_PLUGGED;
 909                 wiiext_event(wdata, true);
 910         } else {
 911                 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
 912                 wiiext_event(wdata, false);
 913         }
 914
 915         wdata->state.cmd_battery = payload[5];
 916         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0))
 917                 wiimote_cmd_complete(wdata);
 918 }
 919
 920 /* reduced generic report with "BB BB" key data only */
 921 static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload)
 922 {
 923         handler_keys(wdata, payload);
 924 }
 925
 926 static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
 927 {
 928         __u16 offset = payload[3] << 8 | payload[4];
 929         __u8 size = (payload[2] >> 4) + 1;
 930         __u8 err = payload[2] & 0x0f;
 931
 932         handler_keys(wdata, payload);
 933
 934         if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
 935                 if (err)
 936                         size = 0;
 937                 else if (size > wdata->state.cmd_read_size)
 938                         size = wdata->state.cmd_read_size;
 939
 940                 wdata->state.cmd_read_size = size;
 941                 if (wdata->state.cmd_read_buf)
 942                         memcpy(wdata->state.cmd_read_buf, &payload[5], size);
 943                 wiimote_cmd_complete(wdata);
 944         }
 945 }
 946
 947 static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
 948 {
 949         __u8 err = payload[3];
 950         __u8 cmd = payload[2];
 951
 952         handler_keys(wdata, payload);
 953
 954         if (wiimote_cmd_pending(wdata, cmd, 0)) {
 955                 wdata->state.cmd_err = err;
 956                 wiimote_cmd_complete(wdata);
 957         } else if (err) {
 958                 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
 959                                                                         cmd);
 960         }
 961 }
 962
 963 static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
 964 {
 965         handler_keys(wdata, payload);
 966         handler_accel(wdata, payload);
 967 }
 968
 969 static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
 970 {
 971         handler_keys(wdata, payload);
 972         wiiext_handle(wdata, &payload[2]);
 973 }
 974
 975 static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
 976 {
 977         handler_keys(wdata, payload);
 978         handler_accel(wdata, payload);
 979         ir_to_input0(wdata, &payload[5], false);
 980         ir_to_input1(wdata, &payload[8], false);
 981         ir_to_input2(wdata, &payload[11], false);
 982         ir_to_input3(wdata, &payload[14], false);
 983         input_sync(wdata->ir);
 984 }
 985
 986 static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
 987 {
 988         handler_keys(wdata, payload);
 989         wiiext_handle(wdata, &payload[2]);
 990 }
 991
 992 static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
 993 {
 994         handler_keys(wdata, payload);
 995         ir_to_input0(wdata, &payload[2], false);
 996         ir_to_input1(wdata, &payload[4], true);
 997         ir_to_input2(wdata, &payload[7], false);
 998         ir_to_input3(wdata, &payload[9], true);
 999         input_sync(wdata->ir);
1000         wiiext_handle(wdata, &payload[12]);
1001 }
1002
1003 static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
1004 {
1005         handler_keys(wdata, payload);
1006         handler_accel(wdata, payload);
1007         wiiext_handle(wdata, &payload[5]);
1008 }
1009
1010 static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
1011 {
1012         handler_keys(wdata, payload);
1013         handler_accel(wdata, payload);
1014         ir_to_input0(wdata, &payload[5], false);
1015         ir_to_input1(wdata, &payload[7], true);
1016         ir_to_input2(wdata, &payload[10], false);
1017         ir_to_input3(wdata, &payload[12], true);
1018         input_sync(wdata->ir);
1019         wiiext_handle(wdata, &payload[15]);
1020 }
1021
1022 static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
1023 {
1024         wiiext_handle(wdata, payload);
1025 }
1026
1027 static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
1028 {
1029         handler_keys(wdata, payload);
1030
1031         wdata->state.accel_split[0] = payload[2];
1032         wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
1033         wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
1034
1035         ir_to_input0(wdata, &payload[3], false);
1036         ir_to_input1(wdata, &payload[12], false);
1037         input_sync(wdata->ir);
1038 }
1039
1040 static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
1041 {
1042         __u8 buf[5];
1043
1044         handler_keys(wdata, payload);
1045
1046         wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
1047         wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
1048
1049         buf[0] = 0;
1050         buf[1] = 0;
1051         buf[2] = wdata->state.accel_split[0];
1052         buf[3] = payload[2];
1053         buf[4] = wdata->state.accel_split[1];
1054         handler_accel(wdata, buf);
1055
1056         ir_to_input2(wdata, &payload[3], false);
1057         ir_to_input3(wdata, &payload[12], false);
1058         input_sync(wdata->ir);
1059 }
1060
1061 struct wiiproto_handler {
1062         __u8 id;
1063         size_t size;
1064         void (*func)(struct wiimote_data *wdata, const __u8 *payload);
1065 };
1066
1067 static struct wiiproto_handler handlers[] = {
1068         { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
1069         { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K },
1070         { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
1071         { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K },
1072         { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
1073         { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K },
1074         { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
1075         { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
1076         { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K },
1077         { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
1078         { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K },
1079         { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
1080         { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K },
1081         { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
1082         { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K },
1083         { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
1084         { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K },
1085         { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
1086         { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K },
1087         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
1088         { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K },
1089         { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
1090         { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
1091         { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
1092         { .id = 0 }
1093 };
1094
1095 static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
1096                                                         u8 *raw_data, int size)
1097 {
1098         struct wiimote_data *wdata = hid_get_drvdata(hdev);
1099         struct wiiproto_handler *h;
1100         int i;
1101         unsigned long flags;
1102
1103         if (size < 1)
1104                 return -EINVAL;
1105
1106         spin_lock_irqsave(&wdata->state.lock, flags);
1107
1108         for (i = 0; handlers[i].id; ++i) {
1109                 h = &handlers[i];
1110                 if (h->id == raw_data[0] && h->size < size) {
1111                         h->func(wdata, &raw_data[1]);
1112                         break;
1113                 }
1114         }
1115
1116         if (!handlers[i].id)
1117                 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
1118                                                                         size);
1119
1120         spin_unlock_irqrestore(&wdata->state.lock, flags);
1121
1122         return 0;
1123 }
1124
1125 static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1126 {
1127         struct wiimote_data *wdata;
1128
1129         wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1130         if (!wdata)
1131                 return NULL;
1132
1133         wdata->hdev = hdev;
1134         hid_set_drvdata(hdev, wdata);
1135
1136         wdata->accel = input_allocate_device();
1137         if (!wdata->accel)
1138                 goto err;
1139
1140         input_set_drvdata(wdata->accel, wdata);
1141         wdata->accel->open = wiimote_accel_open;
1142         wdata->accel->close = wiimote_accel_close;
1143         wdata->accel->dev.parent = &wdata->hdev->dev;
1144         wdata->accel->id.bustype = wdata->hdev->bus;
1145         wdata->accel->id.vendor = wdata->hdev->vendor;
1146         wdata->accel->id.product = wdata->hdev->product;
1147         wdata->accel->id.version = wdata->hdev->version;
1148         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
1149
1150         set_bit(EV_ABS, wdata->accel->evbit);
1151         set_bit(ABS_RX, wdata->accel->absbit);
1152         set_bit(ABS_RY, wdata->accel->absbit);
1153         set_bit(ABS_RZ, wdata->accel->absbit);
1154         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
1155         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
1156         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
1157
1158         wdata->ir = input_allocate_device();
1159         if (!wdata->ir)
1160                 goto err_ir;
1161
1162         input_set_drvdata(wdata->ir, wdata);
1163         wdata->ir->open = wiimote_ir_open;
1164         wdata->ir->close = wiimote_ir_close;
1165         wdata->ir->dev.parent = &wdata->hdev->dev;
1166         wdata->ir->id.bustype = wdata->hdev->bus;
1167         wdata->ir->id.vendor = wdata->hdev->vendor;
1168         wdata->ir->id.product = wdata->hdev->product;
1169         wdata->ir->id.version = wdata->hdev->version;
1170         wdata->ir->name = WIIMOTE_NAME " IR";
1171
1172         set_bit(EV_ABS, wdata->ir->evbit);
1173         set_bit(ABS_HAT0X, wdata->ir->absbit);
1174         set_bit(ABS_HAT0Y, wdata->ir->absbit);
1175         set_bit(ABS_HAT1X, wdata->ir->absbit);
1176         set_bit(ABS_HAT1Y, wdata->ir->absbit);
1177         set_bit(ABS_HAT2X, wdata->ir->absbit);
1178         set_bit(ABS_HAT2Y, wdata->ir->absbit);
1179         set_bit(ABS_HAT3X, wdata->ir->absbit);
1180         set_bit(ABS_HAT3Y, wdata->ir->absbit);
1181         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
1182         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
1183         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
1184         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
1185         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
1186         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
1187         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
1188         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
1189
1190         spin_lock_init(&wdata->queue.lock);
1191         INIT_WORK(&wdata->queue.worker, wiimote_queue_worker);
1192
1193         spin_lock_init(&wdata->state.lock);
1194         init_completion(&wdata->state.ready);
1195         mutex_init(&wdata->state.sync);
1196         wdata->state.drm = WIIPROTO_REQ_DRM_K;
1197         wdata->state.cmd_battery = 0xff;
1198
1199         INIT_WORK(&wdata->init_worker, wiimote_init_worker);
1200
1201         return wdata;
1202
1203 err_ir:
1204         input_free_device(wdata->accel);
1205 err:
1206         kfree(wdata);
1207         return NULL;
1208 }
1209
1210 static void wiimote_destroy(struct wiimote_data *wdata)
1211 {
1212         wiidebug_deinit(wdata);
1213         wiiext_deinit(wdata);
1214
1215         cancel_work_sync(&wdata->init_worker);
1216         wiimote_modules_unload(wdata);
1217         input_unregister_device(wdata->accel);
1218         input_unregister_device(wdata->ir);
1219         cancel_work_sync(&wdata->queue.worker);
1220         hid_hw_close(wdata->hdev);
1221         hid_hw_stop(wdata->hdev);
1222
1223         kfree(wdata);
1224 }
1225
1226 static int wiimote_hid_probe(struct hid_device *hdev,
1227                                 const struct hid_device_id *id)
1228 {
1229         struct wiimote_data *wdata;
1230         int ret;
1231
1232         hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1233
1234         wdata = wiimote_create(hdev);
1235         if (!wdata) {
1236                 hid_err(hdev, "Can't alloc device\n");
1237                 return -ENOMEM;
1238         }
1239
1240         ret = hid_parse(hdev);
1241         if (ret) {
1242                 hid_err(hdev, "HID parse failed\n");
1243                 goto err;
1244         }
1245
1246         ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1247         if (ret) {
1248                 hid_err(hdev, "HW start failed\n");
1249                 goto err;
1250         }
1251
1252         ret = hid_hw_open(hdev);
1253         if (ret) {
1254                 hid_err(hdev, "cannot start hardware I/O\n");
1255                 goto err_stop;
1256         }
1257
1258         ret = input_register_device(wdata->accel);
1259         if (ret) {
1260                 hid_err(hdev, "Cannot register input device\n");
1261                 goto err_close;
1262         }
1263
1264         ret = input_register_device(wdata->ir);
1265         if (ret) {
1266                 hid_err(hdev, "Cannot register input device\n");
1267                 goto err_ir;
1268         }
1269
1270         ret = wiiext_init(wdata);
1271         if (ret)
1272                 goto err_free;
1273
1274         ret = wiidebug_init(wdata);
1275         if (ret)
1276                 goto err_free;
1277
1278         hid_info(hdev, "New device registered\n");
1279
1280         /* schedule device detection */
1281         schedule_work(&wdata->init_worker);
1282
1283         return 0;
1284
1285 err_free:
1286         wiimote_destroy(wdata);
1287         return ret;
1288
1289 err_ir:
1290         input_unregister_device(wdata->accel);
1291         wdata->accel = NULL;
1292 err_close:
1293         hid_hw_close(hdev);
1294 err_stop:
1295         hid_hw_stop(hdev);
1296 err:
1297         input_free_device(wdata->ir);
1298         input_free_device(wdata->accel);
1299         kfree(wdata);
1300         return ret;
1301 }
1302
1303 static void wiimote_hid_remove(struct hid_device *hdev)
1304 {
1305         struct wiimote_data *wdata = hid_get_drvdata(hdev);
1306
1307         hid_info(hdev, "Device removed\n");
1308         wiimote_destroy(wdata);
1309 }
1310
1311 static const struct hid_device_id wiimote_hid_devices[] = {
1312         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1313                                 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1314         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1315                                 USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1316         { }
1317 };
1318 MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1319
1320 static struct hid_driver wiimote_hid_driver = {
1321         .name = "wiimote",
1322         .id_table = wiimote_hid_devices,
1323         .probe = wiimote_hid_probe,
1324         .remove = wiimote_hid_remove,
1325         .raw_event = wiimote_hid_event,
1326 };
1327 module_hid_driver(wiimote_hid_driver);
1328
1329 MODULE_LICENSE("GPL");
1330 MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1331 MODULE_DESCRIPTION("Driver for Nintendo Wii / Wii U peripherals");