drivers/hid/hid-wiimote-modules.c

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
wiimod_keys_in_keys
wiimod_keys_probe
wiimod_rumble_worker
wiimod_rumble_play
wiimod_rumble_probe
wiimod_rumble_remove
wiimod_battery_get_property
wiimod_battery_probe
wiimod_battery_remove
wiimod_led_get
wiimod_led_set
wiimod_led_probe
wiimod_led_remove
wiimod_accel_in_accel
wiimod_accel_open
wiimod_accel_close
wiimod_accel_probe
wiimod_accel_remove
wiimod_ir_in_ir
wiimod_ir_change
wiimod_ir_open
wiimod_ir_close
wiimod_ir_probe
wiimod_ir_remove
wiimod_nunchuk_in_ext
wiimod_nunchuk_open
wiimod_nunchuk_close
wiimod_nunchuk_probe
wiimod_nunchuk_remove
wiimod_classic_in_ext
wiimod_classic_open
wiimod_classic_close
wiimod_classic_probe
wiimod_classic_remove
wiimod_bboard_in_keys
wiimod_bboard_in_ext
wiimod_bboard_open
wiimod_bboard_close
wiimod_bboard_calib_show
wiimod_bboard_probe
wiimod_bboard_remove
wiimod_pro_in_ext
wiimod_pro_open
wiimod_pro_close
wiimod_pro_play
wiimod_pro_calib_show
wiimod_pro_calib_store
wiimod_pro_probe
wiimod_pro_remove
wiimod_drums_report_pressure
wiimod_drums_in_ext
wiimod_drums_open
wiimod_drums_close
wiimod_drums_probe
wiimod_drums_remove
wiimod_guitar_in_ext
wiimod_guitar_open
wiimod_guitar_close
wiimod_guitar_probe
wiimod_guitar_remove
wiimod_builtin_mp_probe
wiimod_builtin_mp_remove
wiimod_no_mp_probe
wiimod_no_mp_remove
wiimod_mp_in_mp
wiimod_mp_open
wiimod_mp_close
wiimod_mp_probe
wiimod_mp_remove
   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Device Modules for Nintendo Wii / Wii U HID Driver
   4  * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
   5  */
   6 
   7 /*
   8  */
   9 
  10 /*
  11  * Wiimote Modules
  12  * Nintendo devices provide different peripherals and many new devices lack
  13  * initial features like the IR camera. Therefore, each peripheral device is
  14  * implemented as an independent module and we probe on each device only the
  15  * modules for the hardware that really is available.
  16  *
  17  * Module registration is sequential. Unregistration is done in reverse order.
  18  * After device detection, the needed modules are loaded. Users can trigger
  19  * re-detection which causes all modules to be unloaded and then reload the
  20  * modules for the new detected device.
  21  *
  22  * wdata->input is a shared input device. It is always initialized prior to
  23  * module registration. If at least one registered module is marked as
  24  * WIIMOD_FLAG_INPUT, then the input device will get registered after all
  25  * modules were registered.
  26  * Please note that it is unregistered _before_ the "remove" callbacks are
  27  * called. This guarantees that no input interaction is done, anymore. However,
  28  * the wiimote core keeps a reference to the input device so it is freed only
  29  * after all modules were removed. It is safe to send events to unregistered
  30  * input devices.
  31  */
  32 
  33 #include <linux/device.h>
  34 #include <linux/hid.h>
  35 #include <linux/input.h>
  36 #include <linux/spinlock.h>
  37 #include "hid-wiimote.h"
  38 
  39 /*
  40  * Keys
  41  * The initial Wii Remote provided a bunch of buttons that are reported as
  42  * part of the core protocol. Many later devices dropped these and report
  43  * invalid data in the core button reports. Load this only on devices which
  44  * correctly send button reports.
  45  * It uses the shared input device.
  46  */
  47 
  48 static const __u16 wiimod_keys_map[] = {
  49         KEY_LEFT,       /* WIIPROTO_KEY_LEFT */
  50         KEY_RIGHT,      /* WIIPROTO_KEY_RIGHT */
  51         KEY_UP,         /* WIIPROTO_KEY_UP */
  52         KEY_DOWN,       /* WIIPROTO_KEY_DOWN */
  53         KEY_NEXT,       /* WIIPROTO_KEY_PLUS */
  54         KEY_PREVIOUS,   /* WIIPROTO_KEY_MINUS */
  55         BTN_1,          /* WIIPROTO_KEY_ONE */
  56         BTN_2,          /* WIIPROTO_KEY_TWO */
  57         BTN_A,          /* WIIPROTO_KEY_A */
  58         BTN_B,          /* WIIPROTO_KEY_B */
  59         BTN_MODE,       /* WIIPROTO_KEY_HOME */
  60 };
  61 
  62 static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
  63 {
  64         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
  65                                                         !!(keys[0] & 0x01));
  66         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
  67                                                         !!(keys[0] & 0x02));
  68         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
  69                                                         !!(keys[0] & 0x04));
  70         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
  71                                                         !!(keys[0] & 0x08));
  72         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
  73                                                         !!(keys[0] & 0x10));
  74         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
  75                                                         !!(keys[1] & 0x01));
  76         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
  77                                                         !!(keys[1] & 0x02));
  78         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
  79                                                         !!(keys[1] & 0x04));
  80         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
  81                                                         !!(keys[1] & 0x08));
  82         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
  83                                                         !!(keys[1] & 0x10));
  84         input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
  85                                                         !!(keys[1] & 0x80));
  86         input_sync(wdata->input);
  87 }
  88 
  89 static int wiimod_keys_probe(const struct wiimod_ops *ops,
  90                              struct wiimote_data *wdata)
  91 {
  92         unsigned int i;
  93 
  94         set_bit(EV_KEY, wdata->input->evbit);
  95         for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
  96                 set_bit(wiimod_keys_map[i], wdata->input->keybit);
  97 
  98         return 0;
  99 }
 100 
 101 static const struct wiimod_ops wiimod_keys = {
 102         .flags = WIIMOD_FLAG_INPUT,
 103         .arg = 0,
 104         .probe = wiimod_keys_probe,
 105         .remove = NULL,
 106         .in_keys = wiimod_keys_in_keys,
 107 };
 108 
 109 /*
 110  * Rumble
 111  * Nearly all devices provide a rumble feature. A small motor for
 112  * force-feedback effects. We provide an FF_RUMBLE memless ff device on the
 113  * shared input device if this module is loaded.
 114  * The rumble motor is controlled via a flag on almost every output report so
 115  * the wiimote core handles the rumble flag. But if a device doesn't provide
 116  * the rumble motor, this flag shouldn't be set.
 117  */
 118 
 119 /* used by wiimod_rumble and wiipro_rumble */
 120 static void wiimod_rumble_worker(struct work_struct *work)
 121 {
 122         struct wiimote_data *wdata = container_of(work, struct wiimote_data,
 123                                                   rumble_worker);
 124 
 125         spin_lock_irq(&wdata->state.lock);
 126         wiiproto_req_rumble(wdata, wdata->state.cache_rumble);
 127         spin_unlock_irq(&wdata->state.lock);
 128 }
 129 
 130 static int wiimod_rumble_play(struct input_dev *dev, void *data,
 131                               struct ff_effect *eff)
 132 {
 133         struct wiimote_data *wdata = input_get_drvdata(dev);
 134         __u8 value;
 135 
 136         /*
 137          * The wiimote supports only a single rumble motor so if any magnitude
 138          * is set to non-zero then we start the rumble motor. If both are set to
 139          * zero, we stop the rumble motor.
 140          */
 141 
 142         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
 143                 value = 1;
 144         else
 145                 value = 0;
 146 
 147         /* Locking state.lock here might deadlock with input_event() calls.
 148          * schedule_work acts as barrier. Merging multiple changes is fine. */
 149         wdata->state.cache_rumble = value;
 150         schedule_work(&wdata->rumble_worker);
 151 
 152         return 0;
 153 }
 154 
 155 static int wiimod_rumble_probe(const struct wiimod_ops *ops,
 156                                struct wiimote_data *wdata)
 157 {
 158         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
 159 
 160         set_bit(FF_RUMBLE, wdata->input->ffbit);
 161         if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
 162                 return -ENOMEM;
 163 
 164         return 0;
 165 }
 166 
 167 static void wiimod_rumble_remove(const struct wiimod_ops *ops,
 168                                  struct wiimote_data *wdata)
 169 {
 170         unsigned long flags;
 171 
 172         cancel_work_sync(&wdata->rumble_worker);
 173 
 174         spin_lock_irqsave(&wdata->state.lock, flags);
 175         wiiproto_req_rumble(wdata, 0);
 176         spin_unlock_irqrestore(&wdata->state.lock, flags);
 177 }
 178 
 179 static const struct wiimod_ops wiimod_rumble = {
 180         .flags = WIIMOD_FLAG_INPUT,
 181         .arg = 0,
 182         .probe = wiimod_rumble_probe,
 183         .remove = wiimod_rumble_remove,
 184 };
 185 
 186 /*
 187  * Battery
 188  * 1 byte of battery capacity information is sent along every protocol status
 189  * report. The wiimote core caches it but we try to update it on every
 190  * user-space request.
 191  * This is supported by nearly every device so it's almost always enabled.
 192  */
 193 
 194 static enum power_supply_property wiimod_battery_props[] = {
 195         POWER_SUPPLY_PROP_CAPACITY,
 196         POWER_SUPPLY_PROP_SCOPE,
 197 };
 198 
 199 static int wiimod_battery_get_property(struct power_supply *psy,
 200                                        enum power_supply_property psp,
 201                                        union power_supply_propval *val)
 202 {
 203         struct wiimote_data *wdata = power_supply_get_drvdata(psy);
 204         int ret = 0, state;
 205         unsigned long flags;
 206 
 207         if (psp == POWER_SUPPLY_PROP_SCOPE) {
 208                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 209                 return 0;
 210         } else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
 211                 return -EINVAL;
 212         }
 213 
 214         ret = wiimote_cmd_acquire(wdata);
 215         if (ret)
 216                 return ret;
 217 
 218         spin_lock_irqsave(&wdata->state.lock, flags);
 219         wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
 220         wiiproto_req_status(wdata);
 221         spin_unlock_irqrestore(&wdata->state.lock, flags);
 222 
 223         wiimote_cmd_wait(wdata);
 224         wiimote_cmd_release(wdata);
 225 
 226         spin_lock_irqsave(&wdata->state.lock, flags);
 227         state = wdata->state.cmd_battery;
 228         spin_unlock_irqrestore(&wdata->state.lock, flags);
 229 
 230         val->intval = state * 100 / 255;
 231         return ret;
 232 }
 233 
 234 static int wiimod_battery_probe(const struct wiimod_ops *ops,
 235                                 struct wiimote_data *wdata)
 236 {
 237         struct power_supply_config psy_cfg = { .drv_data = wdata, };
 238         int ret;
 239 
 240         wdata->battery_desc.properties = wiimod_battery_props;
 241         wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
 242         wdata->battery_desc.get_property = wiimod_battery_get_property;
 243         wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
 244         wdata->battery_desc.use_for_apm = 0;
 245         wdata->battery_desc.name = kasprintf(GFP_KERNEL, "wiimote_battery_%s",
 246                                              wdata->hdev->uniq);
 247         if (!wdata->battery_desc.name)
 248                 return -ENOMEM;
 249 
 250         wdata->battery = power_supply_register(&wdata->hdev->dev,
 251                                                &wdata->battery_desc,
 252                                                &psy_cfg);
 253         if (IS_ERR(wdata->battery)) {
 254                 hid_err(wdata->hdev, "cannot register battery device\n");
 255                 ret = PTR_ERR(wdata->battery);
 256                 goto err_free;
 257         }
 258 
 259         power_supply_powers(wdata->battery, &wdata->hdev->dev);
 260         return 0;
 261 
 262 err_free:
 263         kfree(wdata->battery_desc.name);
 264         wdata->battery_desc.name = NULL;
 265         return ret;
 266 }
 267 
 268 static void wiimod_battery_remove(const struct wiimod_ops *ops,
 269                                   struct wiimote_data *wdata)
 270 {
 271         if (!wdata->battery_desc.name)
 272                 return;
 273 
 274         power_supply_unregister(wdata->battery);
 275         kfree(wdata->battery_desc.name);
 276         wdata->battery_desc.name = NULL;
 277 }
 278 
 279 static const struct wiimod_ops wiimod_battery = {
 280         .flags = 0,
 281         .arg = 0,
 282         .probe = wiimod_battery_probe,
 283         .remove = wiimod_battery_remove,
 284 };
 285 
 286 /*
 287  * LED
 288  * 0 to 4 player LEDs are supported by devices. The "arg" field of the
 289  * wiimod_ops structure specifies which LED this module controls. This allows
 290  * to register a limited number of LEDs.
 291  * State is managed by wiimote core.
 292  */
 293 
 294 static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
 295 {
 296         struct device *dev = led_dev->dev->parent;
 297         struct wiimote_data *wdata = dev_to_wii(dev);
 298         int i;
 299         unsigned long flags;
 300         bool value = false;
 301 
 302         for (i = 0; i < 4; ++i) {
 303                 if (wdata->leds[i] == led_dev) {
 304                         spin_lock_irqsave(&wdata->state.lock, flags);
 305                         value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
 306                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 307                         break;
 308                 }
 309         }
 310 
 311         return value ? LED_FULL : LED_OFF;
 312 }
 313 
 314 static void wiimod_led_set(struct led_classdev *led_dev,
 315                            enum led_brightness value)
 316 {
 317         struct device *dev = led_dev->dev->parent;
 318         struct wiimote_data *wdata = dev_to_wii(dev);
 319         int i;
 320         unsigned long flags;
 321         __u8 state, flag;
 322 
 323         for (i = 0; i < 4; ++i) {
 324                 if (wdata->leds[i] == led_dev) {
 325                         flag = WIIPROTO_FLAG_LED(i + 1);
 326                         spin_lock_irqsave(&wdata->state.lock, flags);
 327                         state = wdata->state.flags;
 328                         if (value == LED_OFF)
 329                                 wiiproto_req_leds(wdata, state & ~flag);
 330                         else
 331                                 wiiproto_req_leds(wdata, state | flag);
 332                         spin_unlock_irqrestore(&wdata->state.lock, flags);
 333                         break;
 334                 }
 335         }
 336 }
 337 
 338 static int wiimod_led_probe(const struct wiimod_ops *ops,
 339                             struct wiimote_data *wdata)
 340 {
 341         struct device *dev = &wdata->hdev->dev;
 342         size_t namesz = strlen(dev_name(dev)) + 9;
 343         struct led_classdev *led;
 344         unsigned long flags;
 345         char *name;
 346         int ret;
 347 
 348         led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
 349         if (!led)
 350                 return -ENOMEM;
 351 
 352         name = (void*)&led[1];
 353         snprintf(name, namesz, "%s:blue:p%lu", dev_name(dev), ops->arg);
 354         led->name = name;
 355         led->brightness = 0;
 356         led->max_brightness = 1;
 357         led->brightness_get = wiimod_led_get;
 358         led->brightness_set = wiimod_led_set;
 359 
 360         wdata->leds[ops->arg] = led;
 361         ret = led_classdev_register(dev, led);
 362         if (ret)
 363                 goto err_free;
 364 
 365         /* enable LED1 to stop initial LED-blinking */
 366         if (ops->arg == 0) {
 367                 spin_lock_irqsave(&wdata->state.lock, flags);
 368                 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
 369                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 370         }
 371 
 372         return 0;
 373 
 374 err_free:
 375         wdata->leds[ops->arg] = NULL;
 376         kfree(led);
 377         return ret;
 378 }
 379 
 380 static void wiimod_led_remove(const struct wiimod_ops *ops,
 381                               struct wiimote_data *wdata)
 382 {
 383         if (!wdata->leds[ops->arg])
 384                 return;
 385 
 386         led_classdev_unregister(wdata->leds[ops->arg]);
 387         kfree(wdata->leds[ops->arg]);
 388         wdata->leds[ops->arg] = NULL;
 389 }
 390 
 391 static const struct wiimod_ops wiimod_leds[4] = {
 392         {
 393                 .flags = 0,
 394                 .arg = 0,
 395                 .probe = wiimod_led_probe,
 396                 .remove = wiimod_led_remove,
 397         },
 398         {
 399                 .flags = 0,
 400                 .arg = 1,
 401                 .probe = wiimod_led_probe,
 402                 .remove = wiimod_led_remove,
 403         },
 404         {
 405                 .flags = 0,
 406                 .arg = 2,
 407                 .probe = wiimod_led_probe,
 408                 .remove = wiimod_led_remove,
 409         },
 410         {
 411                 .flags = 0,
 412                 .arg = 3,
 413                 .probe = wiimod_led_probe,
 414                 .remove = wiimod_led_remove,
 415         },
 416 };
 417 
 418 /*
 419  * Accelerometer
 420  * 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
 421  * device, it's mostly cleared to 0. This module parses this data and provides
 422  * it via a separate input device.
 423  */
 424 
 425 static void wiimod_accel_in_accel(struct wiimote_data *wdata,
 426                                   const __u8 *accel)
 427 {
 428         __u16 x, y, z;
 429 
 430         if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
 431                 return;
 432 
 433         /*
 434          * payload is: BB BB XX YY ZZ
 435          * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
 436          * contain the upper 8 bits of each value. The lower 2 bits are
 437          * contained in the buttons data BB BB.
 438          * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
 439          * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
 440          * accel value and bit 6 is the second bit of the Z value.
 441          * The first bit of Y and Z values is not available and always set to 0.
 442          * 0x200 is returned on no movement.
 443          */
 444 
 445         x = accel[2] << 2;
 446         y = accel[3] << 2;
 447         z = accel[4] << 2;
 448 
 449         x |= (accel[0] >> 5) & 0x3;
 450         y |= (accel[1] >> 4) & 0x2;
 451         z |= (accel[1] >> 5) & 0x2;
 452 
 453         input_report_abs(wdata->accel, ABS_RX, x - 0x200);
 454         input_report_abs(wdata->accel, ABS_RY, y - 0x200);
 455         input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
 456         input_sync(wdata->accel);
 457 }
 458 
 459 static int wiimod_accel_open(struct input_dev *dev)
 460 {
 461         struct wiimote_data *wdata = input_get_drvdata(dev);
 462         unsigned long flags;
 463 
 464         spin_lock_irqsave(&wdata->state.lock, flags);
 465         wiiproto_req_accel(wdata, true);
 466         spin_unlock_irqrestore(&wdata->state.lock, flags);
 467 
 468         return 0;
 469 }
 470 
 471 static void wiimod_accel_close(struct input_dev *dev)
 472 {
 473         struct wiimote_data *wdata = input_get_drvdata(dev);
 474         unsigned long flags;
 475 
 476         spin_lock_irqsave(&wdata->state.lock, flags);
 477         wiiproto_req_accel(wdata, false);
 478         spin_unlock_irqrestore(&wdata->state.lock, flags);
 479 }
 480 
 481 static int wiimod_accel_probe(const struct wiimod_ops *ops,
 482                               struct wiimote_data *wdata)
 483 {
 484         int ret;
 485 
 486         wdata->accel = input_allocate_device();
 487         if (!wdata->accel)
 488                 return -ENOMEM;
 489 
 490         input_set_drvdata(wdata->accel, wdata);
 491         wdata->accel->open = wiimod_accel_open;
 492         wdata->accel->close = wiimod_accel_close;
 493         wdata->accel->dev.parent = &wdata->hdev->dev;
 494         wdata->accel->id.bustype = wdata->hdev->bus;
 495         wdata->accel->id.vendor = wdata->hdev->vendor;
 496         wdata->accel->id.product = wdata->hdev->product;
 497         wdata->accel->id.version = wdata->hdev->version;
 498         wdata->accel->name = WIIMOTE_NAME " Accelerometer";
 499 
 500         set_bit(EV_ABS, wdata->accel->evbit);
 501         set_bit(ABS_RX, wdata->accel->absbit);
 502         set_bit(ABS_RY, wdata->accel->absbit);
 503         set_bit(ABS_RZ, wdata->accel->absbit);
 504         input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
 505         input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
 506         input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
 507 
 508         ret = input_register_device(wdata->accel);
 509         if (ret) {
 510                 hid_err(wdata->hdev, "cannot register input device\n");
 511                 goto err_free;
 512         }
 513 
 514         return 0;
 515 
 516 err_free:
 517         input_free_device(wdata->accel);
 518         wdata->accel = NULL;
 519         return ret;
 520 }
 521 
 522 static void wiimod_accel_remove(const struct wiimod_ops *ops,
 523                                 struct wiimote_data *wdata)
 524 {
 525         if (!wdata->accel)
 526                 return;
 527 
 528         input_unregister_device(wdata->accel);
 529         wdata->accel = NULL;
 530 }
 531 
 532 static const struct wiimod_ops wiimod_accel = {
 533         .flags = 0,
 534         .arg = 0,
 535         .probe = wiimod_accel_probe,
 536         .remove = wiimod_accel_remove,
 537         .in_accel = wiimod_accel_in_accel,
 538 };
 539 
 540 /*
 541  * IR Cam
 542  * Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
 543  * to be initialized with a fairly complex procedure and consumes a lot of
 544  * power. Therefore, as long as no application uses the IR input device, it is
 545  * kept offline.
 546  * Nearly no other device than the normal Wii Remotes supports the IR cam so
 547  * you can disable this module for these devices.
 548  */
 549 
 550 static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
 551                             bool packed, unsigned int id)
 552 {
 553         __u16 x, y;
 554         __u8 xid, yid;
 555         bool sync = false;
 556 
 557         if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
 558                 return;
 559 
 560         switch (id) {
 561         case 0:
 562                 xid = ABS_HAT0X;
 563                 yid = ABS_HAT0Y;
 564                 break;
 565         case 1:
 566                 xid = ABS_HAT1X;
 567                 yid = ABS_HAT1Y;
 568                 break;
 569         case 2:
 570                 xid = ABS_HAT2X;
 571                 yid = ABS_HAT2Y;
 572                 break;
 573         case 3:
 574                 xid = ABS_HAT3X;
 575                 yid = ABS_HAT3Y;
 576                 sync = true;
 577                 break;
 578         default:
 579                 return;
 580         }
 581 
 582         /*
 583          * Basic IR data is encoded into 3 bytes. The first two bytes are the
 584          * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
 585          * of both.
 586          * If data is packed, then the 3rd byte is put first and slightly
 587          * reordered. This allows to interleave packed and non-packed data to
 588          * have two IR sets in 5 bytes instead of 6.
 589          * The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
 590          */
 591 
 592         if (packed) {
 593                 x = ir[1] | ((ir[0] & 0x03) << 8);
 594                 y = ir[2] | ((ir[0] & 0x0c) << 6);
 595         } else {
 596                 x = ir[0] | ((ir[2] & 0x30) << 4);
 597                 y = ir[1] | ((ir[2] & 0xc0) << 2);
 598         }
 599 
 600         input_report_abs(wdata->ir, xid, x);
 601         input_report_abs(wdata->ir, yid, y);
 602 
 603         if (sync)
 604                 input_sync(wdata->ir);
 605 }
 606 
 607 static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
 608 {
 609         int ret;
 610         unsigned long flags;
 611         __u8 format = 0;
 612         static const __u8 data_enable[] = { 0x01 };
 613         static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
 614                                                 0x00, 0xaa, 0x00, 0x64 };
 615         static const __u8 data_sens2[] = { 0x63, 0x03 };
 616         static const __u8 data_fin[] = { 0x08 };
 617 
 618         spin_lock_irqsave(&wdata->state.lock, flags);
 619 
 620         if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
 621                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 622                 return 0;
 623         }
 624 
 625         if (mode == 0) {
 626                 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 627                 wiiproto_req_ir1(wdata, 0);
 628                 wiiproto_req_ir2(wdata, 0);
 629                 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 630                 spin_unlock_irqrestore(&wdata->state.lock, flags);
 631                 return 0;
 632         }
 633 
 634         spin_unlock_irqrestore(&wdata->state.lock, flags);
 635 
 636         ret = wiimote_cmd_acquire(wdata);
 637         if (ret)
 638                 return ret;
 639 
 640         /* send PIXEL CLOCK ENABLE cmd first */
 641         spin_lock_irqsave(&wdata->state.lock, flags);
 642         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
 643         wiiproto_req_ir1(wdata, 0x06);
 644         spin_unlock_irqrestore(&wdata->state.lock, flags);
 645 
 646         ret = wiimote_cmd_wait(wdata);
 647         if (ret)
 648                 goto unlock;
 649         if (wdata->state.cmd_err) {
 650                 ret = -EIO;
 651                 goto unlock;
 652         }
 653 
 654         /* enable IR LOGIC */
 655         spin_lock_irqsave(&wdata->state.lock, flags);
 656         wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
 657         wiiproto_req_ir2(wdata, 0x06);
 658         spin_unlock_irqrestore(&wdata->state.lock, flags);
 659 
 660         ret = wiimote_cmd_wait(wdata);
 661         if (ret)
 662                 goto unlock;
 663         if (wdata->state.cmd_err) {
 664                 ret = -EIO;
 665                 goto unlock;
 666         }
 667 
 668         /* enable IR cam but do not make it send data, yet */
 669         ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
 670                                                         sizeof(data_enable));
 671         if (ret)
 672                 goto unlock;
 673 
 674         /* write first sensitivity block */
 675         ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
 676                                                         sizeof(data_sens1));
 677         if (ret)
 678                 goto unlock;
 679 
 680         /* write second sensitivity block */
 681         ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
 682                                                         sizeof(data_sens2));
 683         if (ret)
 684                 goto unlock;
 685 
 686         /* put IR cam into desired state */
 687         switch (mode) {
 688                 case WIIPROTO_FLAG_IR_FULL:
 689                         format = 5;
 690                         break;
 691                 case WIIPROTO_FLAG_IR_EXT:
 692                         format = 3;
 693                         break;
 694                 case WIIPROTO_FLAG_IR_BASIC:
 695                         format = 1;
 696                         break;
 697         }
 698         ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
 699         if (ret)
 700                 goto unlock;
 701 
 702         /* make IR cam send data */
 703         ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
 704         if (ret)
 705                 goto unlock;
 706 
 707         /* request new DRM mode compatible to IR mode */
 708         spin_lock_irqsave(&wdata->state.lock, flags);
 709         wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
 710         wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
 711         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 712         spin_unlock_irqrestore(&wdata->state.lock, flags);
 713 
 714 unlock:
 715         wiimote_cmd_release(wdata);
 716         return ret;
 717 }
 718 
 719 static int wiimod_ir_open(struct input_dev *dev)
 720 {
 721         struct wiimote_data *wdata = input_get_drvdata(dev);
 722 
 723         return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
 724 }
 725 
 726 static void wiimod_ir_close(struct input_dev *dev)
 727 {
 728         struct wiimote_data *wdata = input_get_drvdata(dev);
 729 
 730         wiimod_ir_change(wdata, 0);
 731 }
 732 
 733 static int wiimod_ir_probe(const struct wiimod_ops *ops,
 734                            struct wiimote_data *wdata)
 735 {
 736         int ret;
 737 
 738         wdata->ir = input_allocate_device();
 739         if (!wdata->ir)
 740                 return -ENOMEM;
 741 
 742         input_set_drvdata(wdata->ir, wdata);
 743         wdata->ir->open = wiimod_ir_open;
 744         wdata->ir->close = wiimod_ir_close;
 745         wdata->ir->dev.parent = &wdata->hdev->dev;
 746         wdata->ir->id.bustype = wdata->hdev->bus;
 747         wdata->ir->id.vendor = wdata->hdev->vendor;
 748         wdata->ir->id.product = wdata->hdev->product;
 749         wdata->ir->id.version = wdata->hdev->version;
 750         wdata->ir->name = WIIMOTE_NAME " IR";
 751 
 752         set_bit(EV_ABS, wdata->ir->evbit);
 753         set_bit(ABS_HAT0X, wdata->ir->absbit);
 754         set_bit(ABS_HAT0Y, wdata->ir->absbit);
 755         set_bit(ABS_HAT1X, wdata->ir->absbit);
 756         set_bit(ABS_HAT1Y, wdata->ir->absbit);
 757         set_bit(ABS_HAT2X, wdata->ir->absbit);
 758         set_bit(ABS_HAT2Y, wdata->ir->absbit);
 759         set_bit(ABS_HAT3X, wdata->ir->absbit);
 760         set_bit(ABS_HAT3Y, wdata->ir->absbit);
 761         input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
 762         input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
 763         input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
 764         input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
 765         input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
 766         input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
 767         input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
 768         input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
 769 
 770         ret = input_register_device(wdata->ir);
 771         if (ret) {
 772                 hid_err(wdata->hdev, "cannot register input device\n");
 773                 goto err_free;
 774         }
 775 
 776         return 0;
 777 
 778 err_free:
 779         input_free_device(wdata->ir);
 780         wdata->ir = NULL;
 781         return ret;
 782 }
 783 
 784 static void wiimod_ir_remove(const struct wiimod_ops *ops,
 785                              struct wiimote_data *wdata)
 786 {
 787         if (!wdata->ir)
 788                 return;
 789 
 790         input_unregister_device(wdata->ir);
 791         wdata->ir = NULL;
 792 }
 793 
 794 static const struct wiimod_ops wiimod_ir = {
 795         .flags = 0,
 796         .arg = 0,
 797         .probe = wiimod_ir_probe,
 798         .remove = wiimod_ir_remove,
 799         .in_ir = wiimod_ir_in_ir,
 800 };
 801 
 802 /*
 803  * Nunchuk Extension
 804  * The Nintendo Wii Nunchuk was the first official extension published by
 805  * Nintendo. It provides two additional keys and a separate accelerometer. It
 806  * can be hotplugged to standard Wii Remotes.
 807  */
 808 
 809 enum wiimod_nunchuk_keys {
 810         WIIMOD_NUNCHUK_KEY_C,
 811         WIIMOD_NUNCHUK_KEY_Z,
 812         WIIMOD_NUNCHUK_KEY_NUM,
 813 };
 814 
 815 static const __u16 wiimod_nunchuk_map[] = {
 816         BTN_C,          /* WIIMOD_NUNCHUK_KEY_C */
 817         BTN_Z,          /* WIIMOD_NUNCHUK_KEY_Z */
 818 };
 819 
 820 static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
 821 {
 822         __s16 x, y, z, bx, by;
 823 
 824         /*   Byte |   8    7 |  6    5 |  4    3 |  2 |  1  |
 825          *   -----+----------+---------+---------+----+-----+
 826          *    1   |              Button X <7:0>             |
 827          *    2   |              Button Y <7:0>             |
 828          *   -----+----------+---------+---------+----+-----+
 829          *    3   |               Speed X <9:2>             |
 830          *    4   |               Speed Y <9:2>             |
 831          *    5   |               Speed Z <9:2>             |
 832          *   -----+----------+---------+---------+----+-----+
 833          *    6   | Z <1:0>  | Y <1:0> | X <1:0> | BC | BZ  |
 834          *   -----+----------+---------+---------+----+-----+
 835          * Button X/Y is the analog stick. Speed X, Y and Z are the
 836          * accelerometer data in the same format as the wiimote's accelerometer.
 837          * The 6th byte contains the LSBs of the accelerometer data.
 838          * BC and BZ are the C and Z buttons: 0 means pressed
 839          *
 840          * If reported interleaved with motionp, then the layout changes. The
 841          * 5th and 6th byte changes to:
 842          *   -----+-----------------------------------+-----+
 843          *    5   |            Speed Z <9:3>          | EXT |
 844          *   -----+--------+-----+-----+----+----+----+-----+
 845          *    6   |Z <2:1> |Y <1>|X <1>| BC | BZ | 0  |  0  |
 846          *   -----+--------+-----+-----+----+----+----+-----+
 847          * All three accelerometer values lose their LSB. The other data is
 848          * still available but slightly moved.
 849          *
 850          * Center data for button values is 128. Center value for accelerometer
 851          * values it 512 / 0x200
 852          */
 853 
 854         bx = ext[0];
 855         by = ext[1];
 856         bx -= 128;
 857         by -= 128;
 858 
 859         x = ext[2] << 2;
 860         y = ext[3] << 2;
 861         z = ext[4] << 2;
 862 
 863         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 864                 x |= (ext[5] >> 3) & 0x02;
 865                 y |= (ext[5] >> 4) & 0x02;
 866                 z &= ~0x4;
 867                 z |= (ext[5] >> 5) & 0x06;
 868         } else {
 869                 x |= (ext[5] >> 2) & 0x03;
 870                 y |= (ext[5] >> 4) & 0x03;
 871                 z |= (ext[5] >> 6) & 0x03;
 872         }
 873 
 874         x -= 0x200;
 875         y -= 0x200;
 876         z -= 0x200;
 877 
 878         input_report_abs(wdata->extension.input, ABS_HAT0X, bx);
 879         input_report_abs(wdata->extension.input, ABS_HAT0Y, by);
 880 
 881         input_report_abs(wdata->extension.input, ABS_RX, x);
 882         input_report_abs(wdata->extension.input, ABS_RY, y);
 883         input_report_abs(wdata->extension.input, ABS_RZ, z);
 884 
 885         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
 886                 input_report_key(wdata->extension.input,
 887                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 888                         !(ext[5] & 0x04));
 889                 input_report_key(wdata->extension.input,
 890                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 891                         !(ext[5] & 0x08));
 892         } else {
 893                 input_report_key(wdata->extension.input,
 894                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
 895                         !(ext[5] & 0x01));
 896                 input_report_key(wdata->extension.input,
 897                         wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
 898                         !(ext[5] & 0x02));
 899         }
 900 
 901         input_sync(wdata->extension.input);
 902 }
 903 
 904 static int wiimod_nunchuk_open(struct input_dev *dev)
 905 {
 906         struct wiimote_data *wdata = input_get_drvdata(dev);
 907         unsigned long flags;
 908 
 909         spin_lock_irqsave(&wdata->state.lock, flags);
 910         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
 911         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 912         spin_unlock_irqrestore(&wdata->state.lock, flags);
 913 
 914         return 0;
 915 }
 916 
 917 static void wiimod_nunchuk_close(struct input_dev *dev)
 918 {
 919         struct wiimote_data *wdata = input_get_drvdata(dev);
 920         unsigned long flags;
 921 
 922         spin_lock_irqsave(&wdata->state.lock, flags);
 923         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
 924         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
 925         spin_unlock_irqrestore(&wdata->state.lock, flags);
 926 }
 927 
 928 static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
 929                                 struct wiimote_data *wdata)
 930 {
 931         int ret, i;
 932 
 933         wdata->extension.input = input_allocate_device();
 934         if (!wdata->extension.input)
 935                 return -ENOMEM;
 936 
 937         input_set_drvdata(wdata->extension.input, wdata);
 938         wdata->extension.input->open = wiimod_nunchuk_open;
 939         wdata->extension.input->close = wiimod_nunchuk_close;
 940         wdata->extension.input->dev.parent = &wdata->hdev->dev;
 941         wdata->extension.input->id.bustype = wdata->hdev->bus;
 942         wdata->extension.input->id.vendor = wdata->hdev->vendor;
 943         wdata->extension.input->id.product = wdata->hdev->product;
 944         wdata->extension.input->id.version = wdata->hdev->version;
 945         wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
 946 
 947         set_bit(EV_KEY, wdata->extension.input->evbit);
 948         for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
 949                 set_bit(wiimod_nunchuk_map[i],
 950                         wdata->extension.input->keybit);
 951 
 952         set_bit(EV_ABS, wdata->extension.input->evbit);
 953         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
 954         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
 955         input_set_abs_params(wdata->extension.input,
 956                              ABS_HAT0X, -120, 120, 2, 4);
 957         input_set_abs_params(wdata->extension.input,
 958                              ABS_HAT0Y, -120, 120, 2, 4);
 959         set_bit(ABS_RX, wdata->extension.input->absbit);
 960         set_bit(ABS_RY, wdata->extension.input->absbit);
 961         set_bit(ABS_RZ, wdata->extension.input->absbit);
 962         input_set_abs_params(wdata->extension.input,
 963                              ABS_RX, -500, 500, 2, 4);
 964         input_set_abs_params(wdata->extension.input,
 965                              ABS_RY, -500, 500, 2, 4);
 966         input_set_abs_params(wdata->extension.input,
 967                              ABS_RZ, -500, 500, 2, 4);
 968 
 969         ret = input_register_device(wdata->extension.input);
 970         if (ret)
 971                 goto err_free;
 972 
 973         return 0;
 974 
 975 err_free:
 976         input_free_device(wdata->extension.input);
 977         wdata->extension.input = NULL;
 978         return ret;
 979 }
 980 
 981 static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
 982                                   struct wiimote_data *wdata)
 983 {
 984         if (!wdata->extension.input)
 985                 return;
 986 
 987         input_unregister_device(wdata->extension.input);
 988         wdata->extension.input = NULL;
 989 }
 990 
 991 static const struct wiimod_ops wiimod_nunchuk = {
 992         .flags = 0,
 993         .arg = 0,
 994         .probe = wiimod_nunchuk_probe,
 995         .remove = wiimod_nunchuk_remove,
 996         .in_ext = wiimod_nunchuk_in_ext,
 997 };
 998 
 999 /*
1000  * Classic Controller
1001  * Another official extension from Nintendo. It provides a classic
1002  * gamecube-like controller that can be hotplugged on the Wii Remote.
1003  * It has several hardware buttons and switches that are all reported via
1004  * a normal extension device.
1005  */
1006 
1007 enum wiimod_classic_keys {
1008         WIIMOD_CLASSIC_KEY_A,
1009         WIIMOD_CLASSIC_KEY_B,
1010         WIIMOD_CLASSIC_KEY_X,
1011         WIIMOD_CLASSIC_KEY_Y,
1012         WIIMOD_CLASSIC_KEY_ZL,
1013         WIIMOD_CLASSIC_KEY_ZR,
1014         WIIMOD_CLASSIC_KEY_PLUS,
1015         WIIMOD_CLASSIC_KEY_MINUS,
1016         WIIMOD_CLASSIC_KEY_HOME,
1017         WIIMOD_CLASSIC_KEY_LEFT,
1018         WIIMOD_CLASSIC_KEY_RIGHT,
1019         WIIMOD_CLASSIC_KEY_UP,
1020         WIIMOD_CLASSIC_KEY_DOWN,
1021         WIIMOD_CLASSIC_KEY_LT,
1022         WIIMOD_CLASSIC_KEY_RT,
1023         WIIMOD_CLASSIC_KEY_NUM,
1024 };
1025 
1026 static const __u16 wiimod_classic_map[] = {
1027         BTN_A,          /* WIIMOD_CLASSIC_KEY_A */
1028         BTN_B,          /* WIIMOD_CLASSIC_KEY_B */
1029         BTN_X,          /* WIIMOD_CLASSIC_KEY_X */
1030         BTN_Y,          /* WIIMOD_CLASSIC_KEY_Y */
1031         BTN_TL2,        /* WIIMOD_CLASSIC_KEY_ZL */
1032         BTN_TR2,        /* WIIMOD_CLASSIC_KEY_ZR */
1033         KEY_NEXT,       /* WIIMOD_CLASSIC_KEY_PLUS */
1034         KEY_PREVIOUS,   /* WIIMOD_CLASSIC_KEY_MINUS */
1035         BTN_MODE,       /* WIIMOD_CLASSIC_KEY_HOME */
1036         KEY_LEFT,       /* WIIMOD_CLASSIC_KEY_LEFT */
1037         KEY_RIGHT,      /* WIIMOD_CLASSIC_KEY_RIGHT */
1038         KEY_UP,         /* WIIMOD_CLASSIC_KEY_UP */
1039         KEY_DOWN,       /* WIIMOD_CLASSIC_KEY_DOWN */
1040         BTN_TL,         /* WIIMOD_CLASSIC_KEY_LT */
1041         BTN_TR,         /* WIIMOD_CLASSIC_KEY_RT */
1042 };
1043 
1044 static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1045 {
1046         __s8 rx, ry, lx, ly, lt, rt;
1047 
1048         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1049          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1050          *    1   | RX <5:4>  |              LX <5:0>             |
1051          *    2   | RX <3:2>  |              LY <5:0>             |
1052          *   -----+-----+-----+-----+-----------------------------+
1053          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1054          *   -----+-----+-----------+-----------------------------+
1055          *    4   |     LT <3:1>    |         RT <5:1>            |
1056          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1057          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1058          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1059          *    6   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1060          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1061          * All buttons are 0 if pressed
1062          * RX and RY are right analog stick
1063          * LX and LY are left analog stick
1064          * LT is left trigger, RT is right trigger
1065          * BLT is 0 if left trigger is fully pressed
1066          * BRT is 0 if right trigger is fully pressed
1067          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1068          * BZL is left Z button and BZR is right Z button
1069          * B-, BH, B+ are +, HOME and - buttons
1070          * BB, BY, BA, BX are A, B, X, Y buttons
1071          * LSB of RX, RY, LT, and RT are not transmitted and always 0.
1072          *
1073          * With motionp enabled it changes slightly to this:
1074          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1075          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1076          *    1   | RX <5:4>  |          LX <5:1>           | BDU |
1077          *    2   | RX <3:2>  |          LY <5:1>           | BDL |
1078          *   -----+-----+-----+-----+-----------------------+-----+
1079          *    3   |RX<1>| LT <5:4>  |         RY <5:1>            |
1080          *   -----+-----+-----------+-----------------------------+
1081          *    4   |     LT <3:1>    |         RT <5:1>            |
1082          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1083          *    5   | BDR | BDD | BLT | B-  | BH  | B+  | BRT | EXT |
1084          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1085          *    6   | BZL | BB  | BY  | BA  | BX  | BZR |  0  |  0  |
1086          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1087          * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1088          * is the same as before.
1089          */
1090 
1091         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1092                 lx = ext[0] & 0x3e;
1093                 ly = ext[1] & 0x3e;
1094         } else {
1095                 lx = ext[0] & 0x3f;
1096                 ly = ext[1] & 0x3f;
1097         }
1098 
1099         rx = (ext[0] >> 3) & 0x18;
1100         rx |= (ext[1] >> 5) & 0x06;
1101         rx |= (ext[2] >> 7) & 0x01;
1102         ry = ext[2] & 0x1f;
1103 
1104         rt = ext[3] & 0x1f;
1105         lt = (ext[2] >> 2) & 0x18;
1106         lt |= (ext[3] >> 5) & 0x07;
1107 
1108         rx <<= 1;
1109         ry <<= 1;
1110         rt <<= 1;
1111         lt <<= 1;
1112 
1113         input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20);
1114         input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20);
1115         input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20);
1116         input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20);
1117         input_report_abs(wdata->extension.input, ABS_HAT3X, rt);
1118         input_report_abs(wdata->extension.input, ABS_HAT3Y, lt);
1119 
1120         input_report_key(wdata->extension.input,
1121                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1122                          !(ext[4] & 0x80));
1123         input_report_key(wdata->extension.input,
1124                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1125                          !(ext[4] & 0x40));
1126         input_report_key(wdata->extension.input,
1127                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1128                          !(ext[4] & 0x20));
1129         input_report_key(wdata->extension.input,
1130                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1131                          !(ext[4] & 0x10));
1132         input_report_key(wdata->extension.input,
1133                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1134                          !(ext[4] & 0x08));
1135         input_report_key(wdata->extension.input,
1136                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1137                          !(ext[4] & 0x04));
1138         input_report_key(wdata->extension.input,
1139                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1140                          !(ext[4] & 0x02));
1141         input_report_key(wdata->extension.input,
1142                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1143                          !(ext[5] & 0x80));
1144         input_report_key(wdata->extension.input,
1145                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1146                          !(ext[5] & 0x40));
1147         input_report_key(wdata->extension.input,
1148                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1149                          !(ext[5] & 0x20));
1150         input_report_key(wdata->extension.input,
1151                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1152                          !(ext[5] & 0x10));
1153         input_report_key(wdata->extension.input,
1154                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1155                          !(ext[5] & 0x08));
1156         input_report_key(wdata->extension.input,
1157                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1158                          !(ext[5] & 0x04));
1159 
1160         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1161                 input_report_key(wdata->extension.input,
1162                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1163                          !(ext[1] & 0x01));
1164                 input_report_key(wdata->extension.input,
1165                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1166                          !(ext[0] & 0x01));
1167         } else {
1168                 input_report_key(wdata->extension.input,
1169                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1170                          !(ext[5] & 0x02));
1171                 input_report_key(wdata->extension.input,
1172                          wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1173                          !(ext[5] & 0x01));
1174         }
1175 
1176         input_sync(wdata->extension.input);
1177 }
1178 
1179 static int wiimod_classic_open(struct input_dev *dev)
1180 {
1181         struct wiimote_data *wdata = input_get_drvdata(dev);
1182         unsigned long flags;
1183 
1184         spin_lock_irqsave(&wdata->state.lock, flags);
1185         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1186         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1187         spin_unlock_irqrestore(&wdata->state.lock, flags);
1188 
1189         return 0;
1190 }
1191 
1192 static void wiimod_classic_close(struct input_dev *dev)
1193 {
1194         struct wiimote_data *wdata = input_get_drvdata(dev);
1195         unsigned long flags;
1196 
1197         spin_lock_irqsave(&wdata->state.lock, flags);
1198         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1199         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1200         spin_unlock_irqrestore(&wdata->state.lock, flags);
1201 }
1202 
1203 static int wiimod_classic_probe(const struct wiimod_ops *ops,
1204                                 struct wiimote_data *wdata)
1205 {
1206         int ret, i;
1207 
1208         wdata->extension.input = input_allocate_device();
1209         if (!wdata->extension.input)
1210                 return -ENOMEM;
1211 
1212         input_set_drvdata(wdata->extension.input, wdata);
1213         wdata->extension.input->open = wiimod_classic_open;
1214         wdata->extension.input->close = wiimod_classic_close;
1215         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1216         wdata->extension.input->id.bustype = wdata->hdev->bus;
1217         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1218         wdata->extension.input->id.product = wdata->hdev->product;
1219         wdata->extension.input->id.version = wdata->hdev->version;
1220         wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1221 
1222         set_bit(EV_KEY, wdata->extension.input->evbit);
1223         for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1224                 set_bit(wiimod_classic_map[i],
1225                         wdata->extension.input->keybit);
1226 
1227         set_bit(EV_ABS, wdata->extension.input->evbit);
1228         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1229         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1230         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
1231         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
1232         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
1233         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
1234         input_set_abs_params(wdata->extension.input,
1235                              ABS_HAT1X, -30, 30, 1, 1);
1236         input_set_abs_params(wdata->extension.input,
1237                              ABS_HAT1Y, -30, 30, 1, 1);
1238         input_set_abs_params(wdata->extension.input,
1239                              ABS_HAT2X, -30, 30, 1, 1);
1240         input_set_abs_params(wdata->extension.input,
1241                              ABS_HAT2Y, -30, 30, 1, 1);
1242         input_set_abs_params(wdata->extension.input,
1243                              ABS_HAT3X, -30, 30, 1, 1);
1244         input_set_abs_params(wdata->extension.input,
1245                              ABS_HAT3Y, -30, 30, 1, 1);
1246 
1247         ret = input_register_device(wdata->extension.input);
1248         if (ret)
1249                 goto err_free;
1250 
1251         return 0;
1252 
1253 err_free:
1254         input_free_device(wdata->extension.input);
1255         wdata->extension.input = NULL;
1256         return ret;
1257 }
1258 
1259 static void wiimod_classic_remove(const struct wiimod_ops *ops,
1260                                   struct wiimote_data *wdata)
1261 {
1262         if (!wdata->extension.input)
1263                 return;
1264 
1265         input_unregister_device(wdata->extension.input);
1266         wdata->extension.input = NULL;
1267 }
1268 
1269 static const struct wiimod_ops wiimod_classic = {
1270         .flags = 0,
1271         .arg = 0,
1272         .probe = wiimod_classic_probe,
1273         .remove = wiimod_classic_remove,
1274         .in_ext = wiimod_classic_in_ext,
1275 };
1276 
1277 /*
1278  * Balance Board Extension
1279  * The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1280  * single push button. No other peripherals are available. However, the
1281  * balance-board data is sent via a standard Wii Remote extension. All other
1282  * data for non-present hardware is zeroed out.
1283  * Some 3rd party devices react allergic if we try to access normal Wii Remote
1284  * hardware, so this extension module should be the only module that is loaded
1285  * on balance boards.
1286  * The balance board needs 8 bytes extension data instead of basic 6 bytes so
1287  * it needs the WIIMOD_FLAG_EXT8 flag.
1288  */
1289 
1290 static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1291 {
1292         input_report_key(wdata->extension.input, BTN_A,
1293                          !!(keys[1] & 0x08));
1294         input_sync(wdata->extension.input);
1295 }
1296 
1297 static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1298                                  const __u8 *ext)
1299 {
1300         __s32 val[4], tmp, div;
1301         unsigned int i;
1302         struct wiimote_state *s = &wdata->state;
1303 
1304         /*
1305          * Balance board data layout:
1306          *
1307          *   Byte |  8  7  6  5  4  3  2  1  |
1308          *   -----+--------------------------+
1309          *    1   |    Top Right <15:8>      |
1310          *    2   |    Top Right  <7:0>      |
1311          *   -----+--------------------------+
1312          *    3   | Bottom Right <15:8>      |
1313          *    4   | Bottom Right  <7:0>      |
1314          *   -----+--------------------------+
1315          *    5   |     Top Left <15:8>      |
1316          *    6   |     Top Left  <7:0>      |
1317          *   -----+--------------------------+
1318          *    7   |  Bottom Left <15:8>      |
1319          *    8   |  Bottom Left  <7:0>      |
1320          *   -----+--------------------------+
1321          *
1322          * These values represent the weight-measurements of the Wii-balance
1323          * board with 16bit precision.
1324          *
1325          * The balance-board is never reported interleaved with motionp.
1326          */
1327 
1328         val[0] = ext[0];
1329         val[0] <<= 8;
1330         val[0] |= ext[1];
1331 
1332         val[1] = ext[2];
1333         val[1] <<= 8;
1334         val[1] |= ext[3];
1335 
1336         val[2] = ext[4];
1337         val[2] <<= 8;
1338         val[2] |= ext[5];
1339 
1340         val[3] = ext[6];
1341         val[3] <<= 8;
1342         val[3] |= ext[7];
1343 
1344         /* apply calibration data */
1345         for (i = 0; i < 4; i++) {
1346                 if (val[i] <= s->calib_bboard[i][0]) {
1347                         tmp = 0;
1348                 } else if (val[i] < s->calib_bboard[i][1]) {
1349                         tmp = val[i] - s->calib_bboard[i][0];
1350                         tmp *= 1700;
1351                         div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1352                         tmp /= div ? div : 1;
1353                 } else {
1354                         tmp = val[i] - s->calib_bboard[i][1];
1355                         tmp *= 1700;
1356                         div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1357                         tmp /= div ? div : 1;
1358                         tmp += 1700;
1359                 }
1360                 val[i] = tmp;
1361         }
1362 
1363         input_report_abs(wdata->extension.input, ABS_HAT0X, val[0]);
1364         input_report_abs(wdata->extension.input, ABS_HAT0Y, val[1]);
1365         input_report_abs(wdata->extension.input, ABS_HAT1X, val[2]);
1366         input_report_abs(wdata->extension.input, ABS_HAT1Y, val[3]);
1367         input_sync(wdata->extension.input);
1368 }
1369 
1370 static int wiimod_bboard_open(struct input_dev *dev)
1371 {
1372         struct wiimote_data *wdata = input_get_drvdata(dev);
1373         unsigned long flags;
1374 
1375         spin_lock_irqsave(&wdata->state.lock, flags);
1376         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1377         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1378         spin_unlock_irqrestore(&wdata->state.lock, flags);
1379 
1380         return 0;
1381 }
1382 
1383 static void wiimod_bboard_close(struct input_dev *dev)
1384 {
1385         struct wiimote_data *wdata = input_get_drvdata(dev);
1386         unsigned long flags;
1387 
1388         spin_lock_irqsave(&wdata->state.lock, flags);
1389         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1390         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1391         spin_unlock_irqrestore(&wdata->state.lock, flags);
1392 }
1393 
1394 static ssize_t wiimod_bboard_calib_show(struct device *dev,
1395                                         struct device_attribute *attr,
1396                                         char *out)
1397 {
1398         struct wiimote_data *wdata = dev_to_wii(dev);
1399         int i, j, ret;
1400         __u16 val;
1401         __u8 buf[24], offs;
1402 
1403         ret = wiimote_cmd_acquire(wdata);
1404         if (ret)
1405                 return ret;
1406 
1407         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1408         if (ret != 12) {
1409                 wiimote_cmd_release(wdata);
1410                 return ret < 0 ? ret : -EIO;
1411         }
1412         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1413         if (ret != 12) {
1414                 wiimote_cmd_release(wdata);
1415                 return ret < 0 ? ret : -EIO;
1416         }
1417 
1418         wiimote_cmd_release(wdata);
1419 
1420         spin_lock_irq(&wdata->state.lock);
1421         offs = 0;
1422         for (i = 0; i < 3; ++i) {
1423                 for (j = 0; j < 4; ++j) {
1424                         wdata->state.calib_bboard[j][i] = buf[offs];
1425                         wdata->state.calib_bboard[j][i] <<= 8;
1426                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1427                         offs += 2;
1428                 }
1429         }
1430         spin_unlock_irq(&wdata->state.lock);
1431 
1432         ret = 0;
1433         for (i = 0; i < 3; ++i) {
1434                 for (j = 0; j < 4; ++j) {
1435                         val = wdata->state.calib_bboard[j][i];
1436                         if (i == 2 && j == 3)
1437                                 ret += sprintf(&out[ret], "%04x\n", val);
1438                         else
1439                                 ret += sprintf(&out[ret], "%04x:", val);
1440                 }
1441         }
1442 
1443         return ret;
1444 }
1445 
1446 static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1447 
1448 static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1449                                struct wiimote_data *wdata)
1450 {
1451         int ret, i, j;
1452         __u8 buf[24], offs;
1453 
1454         wiimote_cmd_acquire_noint(wdata);
1455 
1456         ret = wiimote_cmd_read(wdata, 0xa40024, buf, 12);
1457         if (ret != 12) {
1458                 wiimote_cmd_release(wdata);
1459                 return ret < 0 ? ret : -EIO;
1460         }
1461         ret = wiimote_cmd_read(wdata, 0xa40024 + 12, buf + 12, 12);
1462         if (ret != 12) {
1463                 wiimote_cmd_release(wdata);
1464                 return ret < 0 ? ret : -EIO;
1465         }
1466 
1467         wiimote_cmd_release(wdata);
1468 
1469         offs = 0;
1470         for (i = 0; i < 3; ++i) {
1471                 for (j = 0; j < 4; ++j) {
1472                         wdata->state.calib_bboard[j][i] = buf[offs];
1473                         wdata->state.calib_bboard[j][i] <<= 8;
1474                         wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1475                         offs += 2;
1476                 }
1477         }
1478 
1479         wdata->extension.input = input_allocate_device();
1480         if (!wdata->extension.input)
1481                 return -ENOMEM;
1482 
1483         ret = device_create_file(&wdata->hdev->dev,
1484                                  &dev_attr_bboard_calib);
1485         if (ret) {
1486                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1487                 goto err_free;
1488         }
1489 
1490         input_set_drvdata(wdata->extension.input, wdata);
1491         wdata->extension.input->open = wiimod_bboard_open;
1492         wdata->extension.input->close = wiimod_bboard_close;
1493         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1494         wdata->extension.input->id.bustype = wdata->hdev->bus;
1495         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1496         wdata->extension.input->id.product = wdata->hdev->product;
1497         wdata->extension.input->id.version = wdata->hdev->version;
1498         wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1499 
1500         set_bit(EV_KEY, wdata->extension.input->evbit);
1501         set_bit(BTN_A, wdata->extension.input->keybit);
1502 
1503         set_bit(EV_ABS, wdata->extension.input->evbit);
1504         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
1505         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
1506         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
1507         set_bit(ABS_HAT1Y, wdata->extension.input->absbit);
1508         input_set_abs_params(wdata->extension.input,
1509                              ABS_HAT0X, 0, 65535, 2, 4);
1510         input_set_abs_params(wdata->extension.input,
1511                              ABS_HAT0Y, 0, 65535, 2, 4);
1512         input_set_abs_params(wdata->extension.input,
1513                              ABS_HAT1X, 0, 65535, 2, 4);
1514         input_set_abs_params(wdata->extension.input,
1515                              ABS_HAT1Y, 0, 65535, 2, 4);
1516 
1517         ret = input_register_device(wdata->extension.input);
1518         if (ret)
1519                 goto err_file;
1520 
1521         return 0;
1522 
1523 err_file:
1524         device_remove_file(&wdata->hdev->dev,
1525                            &dev_attr_bboard_calib);
1526 err_free:
1527         input_free_device(wdata->extension.input);
1528         wdata->extension.input = NULL;
1529         return ret;
1530 }
1531 
1532 static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1533                                  struct wiimote_data *wdata)
1534 {
1535         if (!wdata->extension.input)
1536                 return;
1537 
1538         input_unregister_device(wdata->extension.input);
1539         wdata->extension.input = NULL;
1540         device_remove_file(&wdata->hdev->dev,
1541                            &dev_attr_bboard_calib);
1542 }
1543 
1544 static const struct wiimod_ops wiimod_bboard = {
1545         .flags = WIIMOD_FLAG_EXT8,
1546         .arg = 0,
1547         .probe = wiimod_bboard_probe,
1548         .remove = wiimod_bboard_remove,
1549         .in_keys = wiimod_bboard_in_keys,
1550         .in_ext = wiimod_bboard_in_ext,
1551 };
1552 
1553 /*
1554  * Pro Controller
1555  * Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1556  * work together with the classic Wii, but only with the new Wii U. However, it
1557  * uses the same protocol and provides a builtin "classic controller pro"
1558  * extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1559  * We provide all these via a standard extension device as the device doesn't
1560  * feature an extension port.
1561  */
1562 
1563 enum wiimod_pro_keys {
1564         WIIMOD_PRO_KEY_A,
1565         WIIMOD_PRO_KEY_B,
1566         WIIMOD_PRO_KEY_X,
1567         WIIMOD_PRO_KEY_Y,
1568         WIIMOD_PRO_KEY_PLUS,
1569         WIIMOD_PRO_KEY_MINUS,
1570         WIIMOD_PRO_KEY_HOME,
1571         WIIMOD_PRO_KEY_LEFT,
1572         WIIMOD_PRO_KEY_RIGHT,
1573         WIIMOD_PRO_KEY_UP,
1574         WIIMOD_PRO_KEY_DOWN,
1575         WIIMOD_PRO_KEY_TL,
1576         WIIMOD_PRO_KEY_TR,
1577         WIIMOD_PRO_KEY_ZL,
1578         WIIMOD_PRO_KEY_ZR,
1579         WIIMOD_PRO_KEY_THUMBL,
1580         WIIMOD_PRO_KEY_THUMBR,
1581         WIIMOD_PRO_KEY_NUM,
1582 };
1583 
1584 static const __u16 wiimod_pro_map[] = {
1585         BTN_EAST,       /* WIIMOD_PRO_KEY_A */
1586         BTN_SOUTH,      /* WIIMOD_PRO_KEY_B */
1587         BTN_NORTH,      /* WIIMOD_PRO_KEY_X */
1588         BTN_WEST,       /* WIIMOD_PRO_KEY_Y */
1589         BTN_START,      /* WIIMOD_PRO_KEY_PLUS */
1590         BTN_SELECT,     /* WIIMOD_PRO_KEY_MINUS */
1591         BTN_MODE,       /* WIIMOD_PRO_KEY_HOME */
1592         BTN_DPAD_LEFT,  /* WIIMOD_PRO_KEY_LEFT */
1593         BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1594         BTN_DPAD_UP,    /* WIIMOD_PRO_KEY_UP */
1595         BTN_DPAD_DOWN,  /* WIIMOD_PRO_KEY_DOWN */
1596         BTN_TL,         /* WIIMOD_PRO_KEY_TL */
1597         BTN_TR,         /* WIIMOD_PRO_KEY_TR */
1598         BTN_TL2,        /* WIIMOD_PRO_KEY_ZL */
1599         BTN_TR2,        /* WIIMOD_PRO_KEY_ZR */
1600         BTN_THUMBL,     /* WIIMOD_PRO_KEY_THUMBL */
1601         BTN_THUMBR,     /* WIIMOD_PRO_KEY_THUMBR */
1602 };
1603 
1604 static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1605 {
1606         __s16 rx, ry, lx, ly;
1607 
1608         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1609          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1610          *    1   |                   LX <7:0>                    |
1611          *   -----+-----------------------+-----------------------+
1612          *    2   |  0     0     0     0  |       LX <11:8>       |
1613          *   -----+-----------------------+-----------------------+
1614          *    3   |                   RX <7:0>                    |
1615          *   -----+-----------------------+-----------------------+
1616          *    4   |  0     0     0     0  |       RX <11:8>       |
1617          *   -----+-----------------------+-----------------------+
1618          *    5   |                   LY <7:0>                    |
1619          *   -----+-----------------------+-----------------------+
1620          *    6   |  0     0     0     0  |       LY <11:8>       |
1621          *   -----+-----------------------+-----------------------+
1622          *    7   |                   RY <7:0>                    |
1623          *   -----+-----------------------+-----------------------+
1624          *    8   |  0     0     0     0  |       RY <11:8>       |
1625          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1626          *    9   | BDR | BDD | BLT | B-  | BH  | B+  | BRT |  1  |
1627          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1628          *   10   | BZL | BB  | BY  | BA  | BX  | BZR | BDL | BDU |
1629          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1630          *   11   |  1  |     BATTERY     | USB |CHARG|LTHUM|RTHUM|
1631          *   -----+-----+-----------------+-----------+-----+-----+
1632          * All buttons are low-active (0 if pressed)
1633          * RX and RY are right analog stick
1634          * LX and LY are left analog stick
1635          * BLT is left trigger, BRT is right trigger.
1636          * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1637          * BZL is left Z button and BZR is right Z button
1638          * B-, BH, B+ are +, HOME and - buttons
1639          * BB, BY, BA, BX are A, B, X, Y buttons
1640          *
1641          * Bits marked as 0/1 are unknown and never changed during tests.
1642          *
1643          * Not entirely verified:
1644          *   CHARG: 1 if uncharging, 0 if charging
1645          *   USB: 1 if not connected, 0 if connected
1646          *   BATTERY: battery capacity from 000 (empty) to 100 (full)
1647          */
1648 
1649         lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1650         rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1651         ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1652         ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1653 
1654         /* zero-point offsets */
1655         lx -= 0x800;
1656         ly = 0x800 - ly;
1657         rx -= 0x800;
1658         ry = 0x800 - ry;
1659 
1660         /* Trivial automatic calibration. We don't know any calibration data
1661          * in the EEPROM so we must use the first report to calibrate the
1662          * null-position of the analog sticks. Users can retrigger calibration
1663          * via sysfs, or set it explicitly. If data is off more than abs(500),
1664          * we skip calibration as the sticks are likely to be moved already. */
1665         if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1666                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1667                 if (abs(lx) < 500)
1668                         wdata->state.calib_pro_sticks[0] = -lx;
1669                 if (abs(ly) < 500)
1670                         wdata->state.calib_pro_sticks[1] = -ly;
1671                 if (abs(rx) < 500)
1672                         wdata->state.calib_pro_sticks[2] = -rx;
1673                 if (abs(ry) < 500)
1674                         wdata->state.calib_pro_sticks[3] = -ry;
1675         }
1676 
1677         /* apply calibration data */
1678         lx += wdata->state.calib_pro_sticks[0];
1679         ly += wdata->state.calib_pro_sticks[1];
1680         rx += wdata->state.calib_pro_sticks[2];
1681         ry += wdata->state.calib_pro_sticks[3];
1682 
1683         input_report_abs(wdata->extension.input, ABS_X, lx);
1684         input_report_abs(wdata->extension.input, ABS_Y, ly);
1685         input_report_abs(wdata->extension.input, ABS_RX, rx);
1686         input_report_abs(wdata->extension.input, ABS_RY, ry);
1687 
1688         input_report_key(wdata->extension.input,
1689                          wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1690                          !(ext[8] & 0x80));
1691         input_report_key(wdata->extension.input,
1692                          wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1693                          !(ext[8] & 0x40));
1694         input_report_key(wdata->extension.input,
1695                          wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1696                          !(ext[8] & 0x20));
1697         input_report_key(wdata->extension.input,
1698                          wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1699                          !(ext[8] & 0x10));
1700         input_report_key(wdata->extension.input,
1701                          wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1702                          !(ext[8] & 0x08));
1703         input_report_key(wdata->extension.input,
1704                          wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1705                          !(ext[8] & 0x04));
1706         input_report_key(wdata->extension.input,
1707                          wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1708                          !(ext[8] & 0x02));
1709 
1710         input_report_key(wdata->extension.input,
1711                          wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1712                          !(ext[9] & 0x80));
1713         input_report_key(wdata->extension.input,
1714                          wiimod_pro_map[WIIMOD_PRO_KEY_B],
1715                          !(ext[9] & 0x40));
1716         input_report_key(wdata->extension.input,
1717                          wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1718                          !(ext[9] & 0x20));
1719         input_report_key(wdata->extension.input,
1720                          wiimod_pro_map[WIIMOD_PRO_KEY_A],
1721                          !(ext[9] & 0x10));
1722         input_report_key(wdata->extension.input,
1723                          wiimod_pro_map[WIIMOD_PRO_KEY_X],
1724                          !(ext[9] & 0x08));
1725         input_report_key(wdata->extension.input,
1726                          wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1727                          !(ext[9] & 0x04));
1728         input_report_key(wdata->extension.input,
1729                          wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1730                          !(ext[9] & 0x02));
1731         input_report_key(wdata->extension.input,
1732                          wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1733                          !(ext[9] & 0x01));
1734 
1735         input_report_key(wdata->extension.input,
1736                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1737                          !(ext[10] & 0x02));
1738         input_report_key(wdata->extension.input,
1739                          wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1740                          !(ext[10] & 0x01));
1741 
1742         input_sync(wdata->extension.input);
1743 }
1744 
1745 static int wiimod_pro_open(struct input_dev *dev)
1746 {
1747         struct wiimote_data *wdata = input_get_drvdata(dev);
1748         unsigned long flags;
1749 
1750         spin_lock_irqsave(&wdata->state.lock, flags);
1751         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1752         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1753         spin_unlock_irqrestore(&wdata->state.lock, flags);
1754 
1755         return 0;
1756 }
1757 
1758 static void wiimod_pro_close(struct input_dev *dev)
1759 {
1760         struct wiimote_data *wdata = input_get_drvdata(dev);
1761         unsigned long flags;
1762 
1763         spin_lock_irqsave(&wdata->state.lock, flags);
1764         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1765         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1766         spin_unlock_irqrestore(&wdata->state.lock, flags);
1767 }
1768 
1769 static int wiimod_pro_play(struct input_dev *dev, void *data,
1770                            struct ff_effect *eff)
1771 {
1772         struct wiimote_data *wdata = input_get_drvdata(dev);
1773         __u8 value;
1774 
1775         /*
1776          * The wiimote supports only a single rumble motor so if any magnitude
1777          * is set to non-zero then we start the rumble motor. If both are set to
1778          * zero, we stop the rumble motor.
1779          */
1780 
1781         if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1782                 value = 1;
1783         else
1784                 value = 0;
1785 
1786         /* Locking state.lock here might deadlock with input_event() calls.
1787          * schedule_work acts as barrier. Merging multiple changes is fine. */
1788         wdata->state.cache_rumble = value;
1789         schedule_work(&wdata->rumble_worker);
1790 
1791         return 0;
1792 }
1793 
1794 static ssize_t wiimod_pro_calib_show(struct device *dev,
1795                                      struct device_attribute *attr,
1796                                      char *out)
1797 {
1798         struct wiimote_data *wdata = dev_to_wii(dev);
1799         int r;
1800 
1801         r = 0;
1802         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[0]);
1803         r += sprintf(&out[r], "%+06hd ", wdata->state.calib_pro_sticks[1]);
1804         r += sprintf(&out[r], "%+06hd:", wdata->state.calib_pro_sticks[2]);
1805         r += sprintf(&out[r], "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1806 
1807         return r;
1808 }
1809 
1810 static ssize_t wiimod_pro_calib_store(struct device *dev,
1811                                       struct device_attribute *attr,
1812                                       const char *buf, size_t count)
1813 {
1814         struct wiimote_data *wdata = dev_to_wii(dev);
1815         int r;
1816         s16 x1, y1, x2, y2;
1817 
1818         if (!strncmp(buf, "scan\n", 5)) {
1819                 spin_lock_irq(&wdata->state.lock);
1820                 wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1821                 spin_unlock_irq(&wdata->state.lock);
1822         } else {
1823                 r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1824                 if (r != 4)
1825                         return -EINVAL;
1826 
1827                 spin_lock_irq(&wdata->state.lock);
1828                 wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1829                 spin_unlock_irq(&wdata->state.lock);
1830 
1831                 wdata->state.calib_pro_sticks[0] = x1;
1832                 wdata->state.calib_pro_sticks[1] = y1;
1833                 wdata->state.calib_pro_sticks[2] = x2;
1834                 wdata->state.calib_pro_sticks[3] = y2;
1835         }
1836 
1837         return strnlen(buf, PAGE_SIZE);
1838 }
1839 
1840 static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1841                    wiimod_pro_calib_store);
1842 
1843 static int wiimod_pro_probe(const struct wiimod_ops *ops,
1844                             struct wiimote_data *wdata)
1845 {
1846         int ret, i;
1847         unsigned long flags;
1848 
1849         INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1850         wdata->state.calib_pro_sticks[0] = 0;
1851         wdata->state.calib_pro_sticks[1] = 0;
1852         wdata->state.calib_pro_sticks[2] = 0;
1853         wdata->state.calib_pro_sticks[3] = 0;
1854 
1855         spin_lock_irqsave(&wdata->state.lock, flags);
1856         wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1857         spin_unlock_irqrestore(&wdata->state.lock, flags);
1858 
1859         wdata->extension.input = input_allocate_device();
1860         if (!wdata->extension.input)
1861                 return -ENOMEM;
1862 
1863         set_bit(FF_RUMBLE, wdata->extension.input->ffbit);
1864         input_set_drvdata(wdata->extension.input, wdata);
1865 
1866         if (input_ff_create_memless(wdata->extension.input, NULL,
1867                                     wiimod_pro_play)) {
1868                 ret = -ENOMEM;
1869                 goto err_free;
1870         }
1871 
1872         ret = device_create_file(&wdata->hdev->dev,
1873                                  &dev_attr_pro_calib);
1874         if (ret) {
1875                 hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1876                 goto err_free;
1877         }
1878 
1879         wdata->extension.input->open = wiimod_pro_open;
1880         wdata->extension.input->close = wiimod_pro_close;
1881         wdata->extension.input->dev.parent = &wdata->hdev->dev;
1882         wdata->extension.input->id.bustype = wdata->hdev->bus;
1883         wdata->extension.input->id.vendor = wdata->hdev->vendor;
1884         wdata->extension.input->id.product = wdata->hdev->product;
1885         wdata->extension.input->id.version = wdata->hdev->version;
1886         wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1887 
1888         set_bit(EV_KEY, wdata->extension.input->evbit);
1889         for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1890                 set_bit(wiimod_pro_map[i],
1891                         wdata->extension.input->keybit);
1892 
1893         set_bit(EV_ABS, wdata->extension.input->evbit);
1894         set_bit(ABS_X, wdata->extension.input->absbit);
1895         set_bit(ABS_Y, wdata->extension.input->absbit);
1896         set_bit(ABS_RX, wdata->extension.input->absbit);
1897         set_bit(ABS_RY, wdata->extension.input->absbit);
1898         input_set_abs_params(wdata->extension.input,
1899                              ABS_X, -0x400, 0x400, 4, 100);
1900         input_set_abs_params(wdata->extension.input,
1901                              ABS_Y, -0x400, 0x400, 4, 100);
1902         input_set_abs_params(wdata->extension.input,
1903                              ABS_RX, -0x400, 0x400, 4, 100);
1904         input_set_abs_params(wdata->extension.input,
1905                              ABS_RY, -0x400, 0x400, 4, 100);
1906 
1907         ret = input_register_device(wdata->extension.input);
1908         if (ret)
1909                 goto err_file;
1910 
1911         return 0;
1912 
1913 err_file:
1914         device_remove_file(&wdata->hdev->dev,
1915                            &dev_attr_pro_calib);
1916 err_free:
1917         input_free_device(wdata->extension.input);
1918         wdata->extension.input = NULL;
1919         return ret;
1920 }
1921 
1922 static void wiimod_pro_remove(const struct wiimod_ops *ops,
1923                               struct wiimote_data *wdata)
1924 {
1925         unsigned long flags;
1926 
1927         if (!wdata->extension.input)
1928                 return;
1929 
1930         input_unregister_device(wdata->extension.input);
1931         wdata->extension.input = NULL;
1932         cancel_work_sync(&wdata->rumble_worker);
1933         device_remove_file(&wdata->hdev->dev,
1934                            &dev_attr_pro_calib);
1935 
1936         spin_lock_irqsave(&wdata->state.lock, flags);
1937         wiiproto_req_rumble(wdata, 0);
1938         spin_unlock_irqrestore(&wdata->state.lock, flags);
1939 }
1940 
1941 static const struct wiimod_ops wiimod_pro = {
1942         .flags = WIIMOD_FLAG_EXT16,
1943         .arg = 0,
1944         .probe = wiimod_pro_probe,
1945         .remove = wiimod_pro_remove,
1946         .in_ext = wiimod_pro_in_ext,
1947 };
1948 
1949 /*
1950  * Drums
1951  * Guitar-Hero, Rock-Band and other games came bundled with drums which can
1952  * be plugged as extension to a Wiimote. Drum-reports are still not entirely
1953  * figured out, but the most important information is known.
1954  * We create a separate device for drums and report all information via this
1955  * input device.
1956  */
1957 
1958 static inline void wiimod_drums_report_pressure(struct wiimote_data *wdata,
1959                                                 __u8 none, __u8 which,
1960                                                 __u8 pressure, __u8 onoff,
1961                                                 __u8 *store, __u16 code,
1962                                                 __u8 which_code)
1963 {
1964         static const __u8 default_pressure = 3;
1965 
1966         if (!none && which == which_code) {
1967                 *store = pressure;
1968                 input_report_abs(wdata->extension.input, code, *store);
1969         } else if (onoff != !!*store) {
1970                 *store = onoff ? default_pressure : 0;
1971                 input_report_abs(wdata->extension.input, code, *store);
1972         }
1973 }
1974 
1975 static void wiimod_drums_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1976 {
1977         __u8 pressure, which, none, hhp, sx, sy;
1978         __u8 o, r, y, g, b, bass, bm, bp;
1979 
1980         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1981          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1982          *    1   |  0  |  0  |              SX <5:0>             |
1983          *    2   |  0  |  0  |              SY <5:0>             |
1984          *   -----+-----+-----+-----------------------------+-----+
1985          *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
1986          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1987          *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
1988          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1989          *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |  ?  |
1990          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1991          *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |  1  |  1  |
1992          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1993          * All buttons are 0 if pressed
1994          *
1995          * With Motion+ enabled, the following bits will get invalid:
1996          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
1997          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
1998          *    1   |  0  |  0  |              SX <5:1>       |XXXXX|
1999          *    2   |  0  |  0  |              SY <5:1>       |XXXXX|
2000          *   -----+-----+-----+-----------------------------+-----+
2001          *    3   | HPP | NON |         WHICH <5:1>         |  ?  |
2002          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2003          *    4   |   SOFT <7:5>    |  0  |  1  |  1  |  0  |  ?  |
2004          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2005          *    5   |  ?  |  1  |  1  | B-  |  1  | B+  |  1  |XXXXX|
2006          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2007          *    6   |  O  |  R  |  Y  |  G  |  B  | BSS |XXXXX|XXXXX|
2008          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2009          */
2010 
2011         pressure = 7 - (ext[3] >> 5);
2012         which = (ext[2] >> 1) & 0x1f;
2013         none = !!(ext[2] & 0x40);
2014         hhp = !(ext[2] & 0x80);
2015         sx = ext[0] & 0x3f;
2016         sy = ext[1] & 0x3f;
2017         o = !(ext[5] & 0x80);
2018         r = !(ext[5] & 0x40);
2019         y = !(ext[5] & 0x20);
2020         g = !(ext[5] & 0x10);
2021         b = !(ext[5] & 0x08);
2022         bass = !(ext[5] & 0x04);
2023         bm = !(ext[4] & 0x10);
2024         bp = !(ext[4] & 0x04);
2025 
2026         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2027                 sx &= 0x3e;
2028                 sy &= 0x3e;
2029         }
2030 
2031         wiimod_drums_report_pressure(wdata, none, which, pressure,
2032                                      o, &wdata->state.pressure_drums[0],
2033                                      ABS_HAT2Y, 0x0e);
2034         wiimod_drums_report_pressure(wdata, none, which, pressure,
2035                                      r, &wdata->state.pressure_drums[1],
2036                                      ABS_HAT0X, 0x19);
2037         wiimod_drums_report_pressure(wdata, none, which, pressure,
2038                                      y, &wdata->state.pressure_drums[2],
2039                                      ABS_HAT2X, 0x11);
2040         wiimod_drums_report_pressure(wdata, none, which, pressure,
2041                                      g, &wdata->state.pressure_drums[3],
2042                                      ABS_HAT1X, 0x12);
2043         wiimod_drums_report_pressure(wdata, none, which, pressure,
2044                                      b, &wdata->state.pressure_drums[4],
2045                                      ABS_HAT0Y, 0x0f);
2046 
2047         /* Bass shares pressure with hi-hat (set via hhp) */
2048         wiimod_drums_report_pressure(wdata, none, hhp ? 0xff : which, pressure,
2049                                      bass, &wdata->state.pressure_drums[5],
2050                                      ABS_HAT3X, 0x1b);
2051         /* Hi-hat has no on/off values, just pressure. Force to off/0. */
2052         wiimod_drums_report_pressure(wdata, none, hhp ? which : 0xff, pressure,
2053                                      0, &wdata->state.pressure_drums[6],
2054                                      ABS_HAT3Y, 0x0e);
2055 
2056         input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
2057         input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);
2058 
2059         input_report_key(wdata->extension.input, BTN_START, bp);
2060         input_report_key(wdata->extension.input, BTN_SELECT, bm);
2061 
2062         input_sync(wdata->extension.input);
2063 }
2064 
2065 static int wiimod_drums_open(struct input_dev *dev)
2066 {
2067         struct wiimote_data *wdata = input_get_drvdata(dev);
2068         unsigned long flags;
2069 
2070         spin_lock_irqsave(&wdata->state.lock, flags);
2071         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2072         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2073         spin_unlock_irqrestore(&wdata->state.lock, flags);
2074 
2075         return 0;
2076 }
2077 
2078 static void wiimod_drums_close(struct input_dev *dev)
2079 {
2080         struct wiimote_data *wdata = input_get_drvdata(dev);
2081         unsigned long flags;
2082 
2083         spin_lock_irqsave(&wdata->state.lock, flags);
2084         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2085         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2086         spin_unlock_irqrestore(&wdata->state.lock, flags);
2087 }
2088 
2089 static int wiimod_drums_probe(const struct wiimod_ops *ops,
2090                               struct wiimote_data *wdata)
2091 {
2092         int ret;
2093 
2094         wdata->extension.input = input_allocate_device();
2095         if (!wdata->extension.input)
2096                 return -ENOMEM;
2097 
2098         input_set_drvdata(wdata->extension.input, wdata);
2099         wdata->extension.input->open = wiimod_drums_open;
2100         wdata->extension.input->close = wiimod_drums_close;
2101         wdata->extension.input->dev.parent = &wdata->hdev->dev;
2102         wdata->extension.input->id.bustype = wdata->hdev->bus;
2103         wdata->extension.input->id.vendor = wdata->hdev->vendor;
2104         wdata->extension.input->id.product = wdata->hdev->product;
2105         wdata->extension.input->id.version = wdata->hdev->version;
2106         wdata->extension.input->name = WIIMOTE_NAME " Drums";
2107 
2108         set_bit(EV_KEY, wdata->extension.input->evbit);
2109         set_bit(BTN_START, wdata->extension.input->keybit);
2110         set_bit(BTN_SELECT, wdata->extension.input->keybit);
2111 
2112         set_bit(EV_ABS, wdata->extension.input->evbit);
2113         set_bit(ABS_X, wdata->extension.input->absbit);
2114         set_bit(ABS_Y, wdata->extension.input->absbit);
2115         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
2116         set_bit(ABS_HAT0Y, wdata->extension.input->absbit);
2117         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
2118         set_bit(ABS_HAT2X, wdata->extension.input->absbit);
2119         set_bit(ABS_HAT2Y, wdata->extension.input->absbit);
2120         set_bit(ABS_HAT3X, wdata->extension.input->absbit);
2121         set_bit(ABS_HAT3Y, wdata->extension.input->absbit);
2122         input_set_abs_params(wdata->extension.input,
2123                              ABS_X, -32, 31, 1, 1);
2124         input_set_abs_params(wdata->extension.input,
2125                              ABS_Y, -32, 31, 1, 1);
2126         input_set_abs_params(wdata->extension.input,
2127                              ABS_HAT0X, 0, 7, 0, 0);
2128         input_set_abs_params(wdata->extension.input,
2129                              ABS_HAT0Y, 0, 7, 0, 0);
2130         input_set_abs_params(wdata->extension.input,
2131                              ABS_HAT1X, 0, 7, 0, 0);
2132         input_set_abs_params(wdata->extension.input,
2133                              ABS_HAT2X, 0, 7, 0, 0);
2134         input_set_abs_params(wdata->extension.input,
2135                              ABS_HAT2Y, 0, 7, 0, 0);
2136         input_set_abs_params(wdata->extension.input,
2137                              ABS_HAT3X, 0, 7, 0, 0);
2138         input_set_abs_params(wdata->extension.input,
2139                              ABS_HAT3Y, 0, 7, 0, 0);
2140 
2141         ret = input_register_device(wdata->extension.input);
2142         if (ret)
2143                 goto err_free;
2144 
2145         return 0;
2146 
2147 err_free:
2148         input_free_device(wdata->extension.input);
2149         wdata->extension.input = NULL;
2150         return ret;
2151 }
2152 
2153 static void wiimod_drums_remove(const struct wiimod_ops *ops,
2154                                 struct wiimote_data *wdata)
2155 {
2156         if (!wdata->extension.input)
2157                 return;
2158 
2159         input_unregister_device(wdata->extension.input);
2160         wdata->extension.input = NULL;
2161 }
2162 
2163 static const struct wiimod_ops wiimod_drums = {
2164         .flags = 0,
2165         .arg = 0,
2166         .probe = wiimod_drums_probe,
2167         .remove = wiimod_drums_remove,
2168         .in_ext = wiimod_drums_in_ext,
2169 };
2170 
2171 /*
2172  * Guitar
2173  * Guitar-Hero, Rock-Band and other games came bundled with guitars which can
2174  * be plugged as extension to a Wiimote.
2175  * We create a separate device for guitars and report all information via this
2176  * input device.
2177  */
2178 
2179 enum wiimod_guitar_keys {
2180         WIIMOD_GUITAR_KEY_G,
2181         WIIMOD_GUITAR_KEY_R,
2182         WIIMOD_GUITAR_KEY_Y,
2183         WIIMOD_GUITAR_KEY_B,
2184         WIIMOD_GUITAR_KEY_O,
2185         WIIMOD_GUITAR_KEY_UP,
2186         WIIMOD_GUITAR_KEY_DOWN,
2187         WIIMOD_GUITAR_KEY_PLUS,
2188         WIIMOD_GUITAR_KEY_MINUS,
2189         WIIMOD_GUITAR_KEY_NUM,
2190 };
2191 
2192 static const __u16 wiimod_guitar_map[] = {
2193         BTN_1,                  /* WIIMOD_GUITAR_KEY_G */
2194         BTN_2,                  /* WIIMOD_GUITAR_KEY_R */
2195         BTN_3,                  /* WIIMOD_GUITAR_KEY_Y */
2196         BTN_4,                  /* WIIMOD_GUITAR_KEY_B */
2197         BTN_5,                  /* WIIMOD_GUITAR_KEY_O */
2198         BTN_DPAD_UP,            /* WIIMOD_GUITAR_KEY_UP */
2199         BTN_DPAD_DOWN,          /* WIIMOD_GUITAR_KEY_DOWN */
2200         BTN_START,              /* WIIMOD_GUITAR_KEY_PLUS */
2201         BTN_SELECT,             /* WIIMOD_GUITAR_KEY_MINUS */
2202 };
2203 
2204 static void wiimod_guitar_in_ext(struct wiimote_data *wdata, const __u8 *ext)
2205 {
2206         __u8 sx, sy, tb, wb, bd, bm, bp, bo, br, bb, bg, by, bu;
2207 
2208         /*   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2209          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2210          *    1   |  0  |  0  |              SX <5:0>             |
2211          *    2   |  0  |  0  |              SY <5:0>             |
2212          *   -----+-----+-----+-----+-----------------------------+
2213          *    3   |  0  |  0  |  0  |      TB <4:0>               |
2214          *   -----+-----+-----+-----+-----------------------------+
2215          *    4   |  0  |  0  |  0  |      WB <4:0>               |
2216          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2217          *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |  1  |
2218          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2219          *    6   | BO  | BR  | BB  | BG  | BY  |  1  |  1  | BU  |
2220          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2221          * All buttons are 0 if pressed
2222          *
2223          * With Motion+ enabled, it will look like this:
2224          *   Byte |  8  |  7  |  6  |  5  |  4  |  3  |  2  |  1  |
2225          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2226          *    1   |  0  |  0  |              SX <5:1>       | BU  |
2227          *    2   |  0  |  0  |              SY <5:1>       |  1  |
2228          *   -----+-----+-----+-----+-----------------------+-----+
2229          *    3   |  0  |  0  |  0  |      TB <4:0>               |
2230          *   -----+-----+-----+-----+-----------------------------+
2231          *    4   |  0  |  0  |  0  |      WB <4:0>               |
2232          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2233          *    5   |  1  | BD  |  1  | B-  |  1  | B+  |  1  |XXXXX|
2234          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2235          *    6   | BO  | BR  | BB  | BG  | BY  |  1  |XXXXX|XXXXX|
2236          *   -----+-----+-----+-----+-----+-----+-----+-----+-----+
2237          */
2238 
2239         sx = ext[0] & 0x3f;
2240         sy = ext[1] & 0x3f;
2241         tb = ext[2] & 0x1f;
2242         wb = ext[3] & 0x1f;
2243         bd = !(ext[4] & 0x40);
2244         bm = !(ext[4] & 0x10);
2245         bp = !(ext[4] & 0x04);
2246         bo = !(ext[5] & 0x80);
2247         br = !(ext[5] & 0x40);
2248         bb = !(ext[5] & 0x20);
2249         bg = !(ext[5] & 0x10);
2250         by = !(ext[5] & 0x08);
2251         bu = !(ext[5] & 0x01);
2252 
2253         if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2254                 bu = !(ext[0] & 0x01);
2255                 sx &= 0x3e;
2256                 sy &= 0x3e;
2257         }
2258 
2259         input_report_abs(wdata->extension.input, ABS_X, sx - 0x20);
2260         input_report_abs(wdata->extension.input, ABS_Y, sy - 0x20);
2261         input_report_abs(wdata->extension.input, ABS_HAT0X, tb);
2262         input_report_abs(wdata->extension.input, ABS_HAT1X, wb - 0x10);
2263 
2264         input_report_key(wdata->extension.input,
2265                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_G],
2266                          bg);
2267         input_report_key(wdata->extension.input,
2268                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_R],
2269                          br);
2270         input_report_key(wdata->extension.input,
2271                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_Y],
2272                          by);
2273         input_report_key(wdata->extension.input,
2274                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_B],
2275                          bb);
2276         input_report_key(wdata->extension.input,
2277                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_O],
2278                          bo);
2279         input_report_key(wdata->extension.input,
2280                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_UP],
2281                          bu);
2282         input_report_key(wdata->extension.input,
2283                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_DOWN],
2284                          bd);
2285         input_report_key(wdata->extension.input,
2286                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_PLUS],
2287                          bp);
2288         input_report_key(wdata->extension.input,
2289                          wiimod_guitar_map[WIIMOD_GUITAR_KEY_MINUS],
2290                          bm);
2291 
2292         input_sync(wdata->extension.input);
2293 }
2294 
2295 static int wiimod_guitar_open(struct input_dev *dev)
2296 {
2297         struct wiimote_data *wdata = input_get_drvdata(dev);
2298         unsigned long flags;
2299 
2300         spin_lock_irqsave(&wdata->state.lock, flags);
2301         wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2302         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2303         spin_unlock_irqrestore(&wdata->state.lock, flags);
2304 
2305         return 0;
2306 }
2307 
2308 static void wiimod_guitar_close(struct input_dev *dev)
2309 {
2310         struct wiimote_data *wdata = input_get_drvdata(dev);
2311         unsigned long flags;
2312 
2313         spin_lock_irqsave(&wdata->state.lock, flags);
2314         wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2315         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2316         spin_unlock_irqrestore(&wdata->state.lock, flags);
2317 }
2318 
2319 static int wiimod_guitar_probe(const struct wiimod_ops *ops,
2320                                struct wiimote_data *wdata)
2321 {
2322         int ret, i;
2323 
2324         wdata->extension.input = input_allocate_device();
2325         if (!wdata->extension.input)
2326                 return -ENOMEM;
2327 
2328         input_set_drvdata(wdata->extension.input, wdata);
2329         wdata->extension.input->open = wiimod_guitar_open;
2330         wdata->extension.input->close = wiimod_guitar_close;
2331         wdata->extension.input->dev.parent = &wdata->hdev->dev;
2332         wdata->extension.input->id.bustype = wdata->hdev->bus;
2333         wdata->extension.input->id.vendor = wdata->hdev->vendor;
2334         wdata->extension.input->id.product = wdata->hdev->product;
2335         wdata->extension.input->id.version = wdata->hdev->version;
2336         wdata->extension.input->name = WIIMOTE_NAME " Guitar";
2337 
2338         set_bit(EV_KEY, wdata->extension.input->evbit);
2339         for (i = 0; i < WIIMOD_GUITAR_KEY_NUM; ++i)
2340                 set_bit(wiimod_guitar_map[i],
2341                         wdata->extension.input->keybit);
2342 
2343         set_bit(EV_ABS, wdata->extension.input->evbit);
2344         set_bit(ABS_X, wdata->extension.input->absbit);
2345         set_bit(ABS_Y, wdata->extension.input->absbit);
2346         set_bit(ABS_HAT0X, wdata->extension.input->absbit);
2347         set_bit(ABS_HAT1X, wdata->extension.input->absbit);
2348         input_set_abs_params(wdata->extension.input,
2349                              ABS_X, -32, 31, 1, 1);
2350         input_set_abs_params(wdata->extension.input,
2351                              ABS_Y, -32, 31, 1, 1);
2352         input_set_abs_params(wdata->extension.input,
2353                              ABS_HAT0X, 0, 0x1f, 1, 1);
2354         input_set_abs_params(wdata->extension.input,
2355                              ABS_HAT1X, 0, 0x0f, 1, 1);
2356 
2357         ret = input_register_device(wdata->extension.input);
2358         if (ret)
2359                 goto err_free;
2360 
2361         return 0;
2362 
2363 err_free:
2364         input_free_device(wdata->extension.input);
2365         wdata->extension.input = NULL;
2366         return ret;
2367 }
2368 
2369 static void wiimod_guitar_remove(const struct wiimod_ops *ops,
2370                                  struct wiimote_data *wdata)
2371 {
2372         if (!wdata->extension.input)
2373                 return;
2374 
2375         input_unregister_device(wdata->extension.input);
2376         wdata->extension.input = NULL;
2377 }
2378 
2379 static const struct wiimod_ops wiimod_guitar = {
2380         .flags = 0,
2381         .arg = 0,
2382         .probe = wiimod_guitar_probe,
2383         .remove = wiimod_guitar_remove,
2384         .in_ext = wiimod_guitar_in_ext,
2385 };
2386 
2387 /*
2388  * Builtin Motion Plus
2389  * This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
2390  * disables polling for Motion-Plus. This should be set only for devices which
2391  * don't allow MP hotplugging.
2392  */
2393 
2394 static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
2395                                    struct wiimote_data *wdata)
2396 {
2397         unsigned long flags;
2398 
2399         spin_lock_irqsave(&wdata->state.lock, flags);
2400         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2401         spin_unlock_irqrestore(&wdata->state.lock, flags);
2402 
2403         return 0;
2404 }
2405 
2406 static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
2407                                      struct wiimote_data *wdata)
2408 {
2409         unsigned long flags;
2410 
2411         spin_lock_irqsave(&wdata->state.lock, flags);
2412         wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2413         spin_unlock_irqrestore(&wdata->state.lock, flags);
2414 }
2415 
2416 static const struct wiimod_ops wiimod_builtin_mp = {
2417         .flags = 0,
2418         .arg = 0,
2419         .probe = wiimod_builtin_mp_probe,
2420         .remove = wiimod_builtin_mp_remove,
2421 };
2422 
2423 /*
2424  * No Motion Plus
2425  * This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
2426  * disables motion-plus. This is needed for devices that advertise this but we
2427  * don't know how to use it (or whether it is actually present).
2428  */
2429 
2430 static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
2431                               struct wiimote_data *wdata)
2432 {
2433         unsigned long flags;
2434 
2435         spin_lock_irqsave(&wdata->state.lock, flags);
2436         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2437         spin_unlock_irqrestore(&wdata->state.lock, flags);
2438 
2439         return 0;
2440 }
2441 
2442 static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2443                                 struct wiimote_data *wdata)
2444 {
2445         unsigned long flags;
2446 
2447         spin_lock_irqsave(&wdata->state.lock, flags);
2448         wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2449         spin_unlock_irqrestore(&wdata->state.lock, flags);
2450 }
2451 
2452 static const struct wiimod_ops wiimod_no_mp = {
2453         .flags = 0,
2454         .arg = 0,
2455         .probe = wiimod_no_mp_probe,
2456         .remove = wiimod_no_mp_remove,
2457 };
2458 
2459 /*
2460  * Motion Plus
2461  * The Motion Plus extension provides rotation sensors (gyro) as a small
2462  * extension device for Wii Remotes. Many devices have them built-in so
2463  * you cannot see them from the outside.
2464  * Motion Plus extensions are special because they are on a separate extension
2465  * port and allow other extensions to be used simultaneously. This is all
2466  * handled by the Wiimote Core so we don't have to deal with it.
2467  */
2468 
2469 static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2470 {
2471         __s32 x, y, z;
2472 
2473         /*        |   8    7    6    5    4    3 |  2  |  1  |
2474          *   -----+------------------------------+-----+-----+
2475          *    1   |               Yaw Speed <7:0>            |
2476          *    2   |              Roll Speed <7:0>            |
2477          *    3   |             Pitch Speed <7:0>            |
2478          *   -----+------------------------------+-----+-----+
2479          *    4   |       Yaw Speed <13:8>       | Yaw |Pitch|
2480          *   -----+------------------------------+-----+-----+
2481          *    5   |      Roll Speed <13:8>       |Roll | Ext |
2482          *   -----+------------------------------+-----+-----+
2483          *    6   |     Pitch Speed <13:8>       |  1  |  0  |
2484          *   -----+------------------------------+-----+-----+
2485          * The single bits Yaw, Roll, Pitch in the lower right corner specify
2486          * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2487          * roation is 8192/440 units / deg/s and for fast rotation 8192/2000
2488          * units / deg/s. To get a linear scale for fast rotation we multiply
2489          * by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
2490          * previous scale reported by this driver.
2491          * This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2492          * If the wiimote is not rotating the sensor reports 2^13 = 8192.
2493          * Ext specifies whether an extension is connected to the motionp.
2494          * which is parsed by wiimote-core.
2495          */
2496 
2497         x = ext[0];
2498         y = ext[1];
2499         z = ext[2];
2500 
2501         x |= (((__u16)ext[3]) << 6) & 0xff00;
2502         y |= (((__u16)ext[4]) << 6) & 0xff00;
2503         z |= (((__u16)ext[5]) << 6) & 0xff00;
2504 
2505         x -= 8192;
2506         y -= 8192;
2507         z -= 8192;
2508 
2509         if (!(ext[3] & 0x02))
2510                 x = (x * 2000 * 9) / 440;
2511         else
2512                 x *= 9;
2513         if (!(ext[4] & 0x02))
2514                 y = (y * 2000 * 9) / 440;
2515         else
2516                 y *= 9;
2517         if (!(ext[3] & 0x01))
2518                 z = (z * 2000 * 9) / 440;
2519         else
2520                 z *= 9;
2521 
2522         input_report_abs(wdata->mp, ABS_RX, x);
2523         input_report_abs(wdata->mp, ABS_RY, y);
2524         input_report_abs(wdata->mp, ABS_RZ, z);
2525         input_sync(wdata->mp);
2526 }
2527 
2528 static int wiimod_mp_open(struct input_dev *dev)
2529 {
2530         struct wiimote_data *wdata = input_get_drvdata(dev);
2531         unsigned long flags;
2532 
2533         spin_lock_irqsave(&wdata->state.lock, flags);
2534         wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2535         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2536         __wiimote_schedule(wdata);
2537         spin_unlock_irqrestore(&wdata->state.lock, flags);
2538 
2539         return 0;
2540 }
2541 
2542 static void wiimod_mp_close(struct input_dev *dev)
2543 {
2544         struct wiimote_data *wdata = input_get_drvdata(dev);
2545         unsigned long flags;
2546 
2547         spin_lock_irqsave(&wdata->state.lock, flags);
2548         wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2549         wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2550         __wiimote_schedule(wdata);
2551         spin_unlock_irqrestore(&wdata->state.lock, flags);
2552 }
2553 
2554 static int wiimod_mp_probe(const struct wiimod_ops *ops,
2555                            struct wiimote_data *wdata)
2556 {
2557         int ret;
2558 
2559         wdata->mp = input_allocate_device();
2560         if (!wdata->mp)
2561                 return -ENOMEM;
2562 
2563         input_set_drvdata(wdata->mp, wdata);
2564         wdata->mp->open = wiimod_mp_open;
2565         wdata->mp->close = wiimod_mp_close;
2566         wdata->mp->dev.parent = &wdata->hdev->dev;
2567         wdata->mp->id.bustype = wdata->hdev->bus;
2568         wdata->mp->id.vendor = wdata->hdev->vendor;
2569         wdata->mp->id.product = wdata->hdev->product;
2570         wdata->mp->id.version = wdata->hdev->version;
2571         wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2572 
2573         set_bit(EV_ABS, wdata->mp->evbit);
2574         set_bit(ABS_RX, wdata->mp->absbit);
2575         set_bit(ABS_RY, wdata->mp->absbit);
2576         set_bit(ABS_RZ, wdata->mp->absbit);
2577         input_set_abs_params(wdata->mp,
2578                              ABS_RX, -16000, 16000, 4, 8);
2579         input_set_abs_params(wdata->mp,
2580                              ABS_RY, -16000, 16000, 4, 8);
2581         input_set_abs_params(wdata->mp,
2582                              ABS_RZ, -16000, 16000, 4, 8);
2583 
2584         ret = input_register_device(wdata->mp);
2585         if (ret)
2586                 goto err_free;
2587 
2588         return 0;
2589 
2590 err_free:
2591         input_free_device(wdata->mp);
2592         wdata->mp = NULL;
2593         return ret;
2594 }
2595 
2596 static void wiimod_mp_remove(const struct wiimod_ops *ops,
2597                              struct wiimote_data *wdata)
2598 {
2599         if (!wdata->mp)
2600                 return;
2601 
2602         input_unregister_device(wdata->mp);
2603         wdata->mp = NULL;
2604 }
2605 
2606 const struct wiimod_ops wiimod_mp = {
2607         .flags = 0,
2608         .arg = 0,
2609         .probe = wiimod_mp_probe,
2610         .remove = wiimod_mp_remove,
2611         .in_mp = wiimod_mp_in_mp,
2612 };
2613 
2614 /* module table */
2615 
2616 static const struct wiimod_ops wiimod_dummy;
2617 
2618 const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2619         [WIIMOD_KEYS] = &wiimod_keys,
2620         [WIIMOD_RUMBLE] = &wiimod_rumble,
2621         [WIIMOD_BATTERY] = &wiimod_battery,
2622         [WIIMOD_LED1] = &wiimod_leds[0],
2623         [WIIMOD_LED2] = &wiimod_leds[1],
2624         [WIIMOD_LED3] = &wiimod_leds[2],
2625         [WIIMOD_LED4] = &wiimod_leds[3],
2626         [WIIMOD_ACCEL] = &wiimod_accel,
2627         [WIIMOD_IR] = &wiimod_ir,
2628         [WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2629         [WIIMOD_NO_MP] = &wiimod_no_mp,
2630 };
2631 
2632 const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2633         [WIIMOTE_EXT_NONE] = &wiimod_dummy,
2634         [WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2635         [WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2636         [WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2637         [WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2638         [WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2639         [WIIMOTE_EXT_DRUMS] = &wiimod_drums,
2640         [WIIMOTE_EXT_GUITAR] = &wiimod_guitar,
2641 };
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/hid/hid-wiimote-modules.c

DEFINITIONS
