2 * HID driver for Nintendo Wiimote extension devices
3 * Copyright (c) 2011 David Herrmann
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
13 #include <linux/atomic.h>
14 #include <linux/module.h>
15 #include <linux/spinlock.h>
16 #include <linux/workqueue.h>
17 #include "hid-wiimote.h"
20 struct wiimote_data *wdata;
21 struct work_struct worker;
22 struct input_dev *input;
23 struct input_dev *mp_input;
35 WIIEXT_NONE, /* placeholder */
36 WIIEXT_CLASSIC, /* Nintendo classic controller */
37 WIIEXT_NUNCHUCK, /* Nintendo nunchuck controller */
38 WIIEXT_BALANCE_BOARD, /* Nintendo balance board controller */
62 static __u16 wiiext_keymap[] = {
63 BTN_C, /* WIIEXT_KEY_C */
64 BTN_Z, /* WIIEXT_KEY_Z */
65 BTN_A, /* WIIEXT_KEY_A */
66 BTN_B, /* WIIEXT_KEY_B */
67 BTN_X, /* WIIEXT_KEY_X */
68 BTN_Y, /* WIIEXT_KEY_Y */
69 BTN_TL2, /* WIIEXT_KEY_ZL */
70 BTN_TR2, /* WIIEXT_KEY_ZR */
71 KEY_NEXT, /* WIIEXT_KEY_PLUS */
72 KEY_PREVIOUS, /* WIIEXT_KEY_MINUS */
73 BTN_MODE, /* WIIEXT_KEY_HOME */
74 KEY_LEFT, /* WIIEXT_KEY_LEFT */
75 KEY_RIGHT, /* WIIEXT_KEY_RIGHT */
76 KEY_UP, /* WIIEXT_KEY_UP */
77 KEY_DOWN, /* WIIEXT_KEY_DOWN */
78 BTN_TL, /* WIIEXT_KEY_LT */
79 BTN_TR, /* WIIEXT_KEY_RT */
82 /* disable all extensions */
83 static void ext_disable(struct wiimote_ext *ext)
88 if (!wiimote_cmd_acquire(ext->wdata)) {
89 wiimote_cmd_write(ext->wdata, 0xa400f0, &wmem, sizeof(wmem));
90 wiimote_cmd_release(ext->wdata);
93 spin_lock_irqsave(&ext->wdata->state.lock, flags);
95 ext->ext_type = WIIEXT_NONE;
96 wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL);
97 spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
100 static bool motionp_read(struct wiimote_ext *ext)
106 if (!atomic_read(&ext->mp_opened))
109 if (wiimote_cmd_acquire(ext->wdata))
112 /* initialize motion plus */
114 ret = wiimote_cmd_write(ext->wdata, 0xa600f0, &wmem, sizeof(wmem));
118 /* read motion plus ID */
119 ret = wiimote_cmd_read(ext->wdata, 0xa600fe, rmem, 2);
120 if (ret == 2 || rmem[1] == 0x5)
124 wiimote_cmd_release(ext->wdata);
128 static __u8 ext_read(struct wiimote_ext *ext)
131 __u8 buf[24], i, j, offs = 0;
133 __u8 type = WIIEXT_NONE;
135 if (!ext->plugged || !atomic_read(&ext->opened))
138 if (wiimote_cmd_acquire(ext->wdata))
141 /* initialize extension */
143 ret = wiimote_cmd_write(ext->wdata, 0xa400f0, &wmem, sizeof(wmem));
145 /* disable encryption */
147 wiimote_cmd_write(ext->wdata, 0xa400fb, &wmem, sizeof(wmem));
150 /* read extension ID */
151 ret = wiimote_cmd_read(ext->wdata, 0xa400fe, rmem, 2);
153 if (rmem[0] == 0 && rmem[1] == 0)
154 type = WIIEXT_NUNCHUCK;
155 else if (rmem[0] == 0x01 && rmem[1] == 0x01)
156 type = WIIEXT_CLASSIC;
157 else if (rmem[0] == 0x04 && rmem[1] == 0x02)
158 type = WIIEXT_BALANCE_BOARD;
161 /* get balance board calibration data */
162 if (type == WIIEXT_BALANCE_BOARD) {
163 ret = wiimote_cmd_read(ext->wdata, 0xa40024, buf, 12);
164 ret += wiimote_cmd_read(ext->wdata, 0xa40024 + 12,
170 for (i = 0; i < 3; i++) {
171 for (j = 0; j < 4; j++) {
172 ext->calib[j][i] = buf[offs];
173 ext->calib[j][i] <<= 8;
174 ext->calib[j][i] |= buf[offs + 1];
181 wiimote_cmd_release(ext->wdata);
186 static void ext_enable(struct wiimote_ext *ext, bool motionp, __u8 ext_type)
193 if (wiimote_cmd_acquire(ext->wdata))
196 if (ext_type == WIIEXT_CLASSIC)
198 else if (ext_type == WIIEXT_NUNCHUCK)
203 ret = wiimote_cmd_write(ext->wdata, 0xa600fe, &wmem, sizeof(wmem));
204 wiimote_cmd_release(ext->wdata);
209 spin_lock_irqsave(&ext->wdata->state.lock, flags);
210 ext->motionp = motionp;
211 ext->ext_type = ext_type;
212 wiiproto_req_drm(ext->wdata, WIIPROTO_REQ_NULL);
213 spin_unlock_irqrestore(&ext->wdata->state.lock, flags);
216 static void wiiext_worker(struct work_struct *work)
218 struct wiimote_ext *ext = container_of(work, struct wiimote_ext,
224 motionp = motionp_read(ext);
225 ext_type = ext_read(ext);
226 ext_enable(ext, motionp, ext_type);
229 /* schedule work only once, otherwise mark for reschedule */
230 static void wiiext_schedule(struct wiimote_ext *ext)
232 schedule_work(&ext->worker);
236 * Reacts on extension port events
237 * Whenever the driver gets an event from the wiimote that an extension has been
238 * plugged or unplugged, this funtion shall be called. It checks what extensions
239 * are connected and initializes and activates them.
240 * This can be called in atomic context. The initialization is done in a
241 * separate worker thread. The state.lock spinlock must be held by the caller.
243 void wiiext_event(struct wiimote_data *wdata, bool plugged)
248 if (wdata->ext->plugged == plugged)
251 wdata->ext->plugged = plugged;
254 wdata->ext->mp_plugged = false;
257 * We need to call wiiext_schedule(wdata->ext) here, however, the
258 * extension initialization logic is not fully understood and so
259 * automatic initialization is not supported, yet.
264 * Returns true if the current DRM mode should contain extension data and false
265 * if there is no interest in extension data.
266 * All supported extensions send 6 byte extension data so any DRM that contains
267 * extension bytes is fine.
268 * The caller must hold the state.lock spinlock.
270 bool wiiext_active(struct wiimote_data *wdata)
275 return wdata->ext->motionp || wdata->ext->ext_type;
278 static void handler_motionp(struct wiimote_ext *ext, const __u8 *payload)
283 /* | 8 7 6 5 4 3 | 2 | 1 |
284 * -----+------------------------------+-----+-----+
285 * 1 | Yaw Speed <7:0> |
286 * 2 | Roll Speed <7:0> |
287 * 3 | Pitch Speed <7:0> |
288 * -----+------------------------------+-----+-----+
289 * 4 | Yaw Speed <13:8> | Yaw |Pitch|
290 * -----+------------------------------+-----+-----+
291 * 5 | Roll Speed <13:8> |Roll | Ext |
292 * -----+------------------------------+-----+-----+
293 * 6 | Pitch Speed <13:8> | 1 | 0 |
294 * -----+------------------------------+-----+-----+
295 * The single bits Yaw, Roll, Pitch in the lower right corner specify
296 * whether the wiimote is rotating fast (0) or slow (1). Speed for slow
297 * roation is 440 deg/s and for fast rotation 2000 deg/s. To get a
298 * linear scale we multiply by 2000/440 = ~4.5454 which is 18 for fast
300 * If the wiimote is not rotating the sensor reports 2^13 = 8192.
301 * Ext specifies whether an extension is connected to the motionp.
308 x |= (((__u16)payload[3]) << 6) & 0xff00;
309 y |= (((__u16)payload[4]) << 6) & 0xff00;
310 z |= (((__u16)payload[5]) << 6) & 0xff00;
316 if (!(payload[3] & 0x02))
320 if (!(payload[4] & 0x02))
324 if (!(payload[3] & 0x01))
329 input_report_abs(ext->mp_input, ABS_RX, x);
330 input_report_abs(ext->mp_input, ABS_RY, y);
331 input_report_abs(ext->mp_input, ABS_RZ, z);
332 input_sync(ext->mp_input);
334 plugged = payload[5] & 0x01;
335 if (plugged != ext->mp_plugged)
336 ext->mp_plugged = plugged;
339 static void handler_nunchuck(struct wiimote_ext *ext, const __u8 *payload)
341 __s16 x, y, z, bx, by;
343 /* Byte | 8 7 | 6 5 | 4 3 | 2 | 1 |
344 * -----+----------+---------+---------+----+-----+
345 * 1 | Button X <7:0> |
346 * 2 | Button Y <7:0> |
347 * -----+----------+---------+---------+----+-----+
348 * 3 | Speed X <9:2> |
349 * 4 | Speed Y <9:2> |
350 * 5 | Speed Z <9:2> |
351 * -----+----------+---------+---------+----+-----+
352 * 6 | Z <1:0> | Y <1:0> | X <1:0> | BC | BZ |
353 * -----+----------+---------+---------+----+-----+
354 * Button X/Y is the analog stick. Speed X, Y and Z are the
355 * accelerometer data in the same format as the wiimote's accelerometer.
356 * The 6th byte contains the LSBs of the accelerometer data.
357 * BC and BZ are the C and Z buttons: 0 means pressed
359 * If reported interleaved with motionp, then the layout changes. The
360 * 5th and 6th byte changes to:
361 * -----+-----------------------------------+-----+
362 * 5 | Speed Z <9:3> | EXT |
363 * -----+--------+-----+-----+----+----+----+-----+
364 * 6 |Z <2:1> |Y <1>|X <1>| BC | BZ | 0 | 0 |
365 * -----+--------+-----+-----+----+----+----+-----+
366 * All three accelerometer values lose their LSB. The other data is
367 * still available but slightly moved.
369 * Center data for button values is 128. Center value for accelerometer
370 * values it 512 / 0x200
383 x |= (payload[5] >> 3) & 0x02;
384 y |= (payload[5] >> 4) & 0x02;
386 z |= (payload[5] >> 5) & 0x06;
388 x |= (payload[5] >> 2) & 0x03;
389 y |= (payload[5] >> 4) & 0x03;
390 z |= (payload[5] >> 6) & 0x03;
397 input_report_abs(ext->input, ABS_HAT0X, bx);
398 input_report_abs(ext->input, ABS_HAT0Y, by);
400 input_report_abs(ext->input, ABS_RX, x);
401 input_report_abs(ext->input, ABS_RY, y);
402 input_report_abs(ext->input, ABS_RZ, z);
405 input_report_key(ext->input,
406 wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x04));
407 input_report_key(ext->input,
408 wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x08));
410 input_report_key(ext->input,
411 wiiext_keymap[WIIEXT_KEY_Z], !!(payload[5] & 0x01));
412 input_report_key(ext->input,
413 wiiext_keymap[WIIEXT_KEY_C], !!(payload[5] & 0x02));
416 input_sync(ext->input);
419 static void handler_classic(struct wiimote_ext *ext, const __u8 *payload)
421 __s8 rx, ry, lx, ly, lt, rt;
423 /* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
424 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
425 * 1 | RX <5:4> | LX <5:0> |
426 * 2 | RX <3:2> | LY <5:0> |
427 * -----+-----+-----+-----+-----------------------------+
428 * 3 |RX<1>| LT <5:4> | RY <5:1> |
429 * -----+-----+-----------+-----------------------------+
430 * 4 | LT <3:1> | RT <5:1> |
431 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
432 * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | 1 |
433 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
434 * 6 | BZL | BB | BY | BA | BX | BZR | BDL | BDU |
435 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
436 * All buttons are 0 if pressed
437 * RX and RY are right analog stick
438 * LX and LY are left analog stick
439 * LT is left trigger, RT is right trigger
440 * BLT is 0 if left trigger is fully pressed
441 * BRT is 0 if right trigger is fully pressed
442 * BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
443 * BZL is left Z button and BZR is right Z button
444 * B-, BH, B+ are +, HOME and - buttons
445 * BB, BY, BA, BX are A, B, X, Y buttons
446 * LSB of RX, RY, LT, and RT are not transmitted and always 0.
448 * With motionp enabled it changes slightly to this:
449 * Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
450 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
451 * 1 | RX <4:3> | LX <5:1> | BDU |
452 * 2 | RX <2:1> | LY <5:1> | BDL |
453 * -----+-----+-----+-----+-----------------------+-----+
454 * 3 |RX<0>| LT <4:3> | RY <4:0> |
455 * -----+-----+-----------+-----------------------------+
456 * 4 | LT <2:0> | RT <4:0> |
457 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
458 * 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | EXT |
459 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
460 * 6 | BZL | BB | BY | BA | BX | BZR | 0 | 0 |
461 * -----+-----+-----+-----+-----+-----+-----+-----+-----+
462 * Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
463 * is the same as before.
467 lx = payload[0] & 0x3e;
468 ly = payload[0] & 0x3e;
470 lx = payload[0] & 0x3f;
471 ly = payload[0] & 0x3f;
474 rx = (payload[0] >> 3) & 0x14;
475 rx |= (payload[1] >> 5) & 0x06;
476 rx |= (payload[2] >> 7) & 0x01;
477 ry = payload[2] & 0x1f;
479 rt = payload[3] & 0x1f;
480 lt = (payload[2] >> 2) & 0x18;
481 lt |= (payload[3] >> 5) & 0x07;
488 input_report_abs(ext->input, ABS_HAT1X, lx - 0x20);
489 input_report_abs(ext->input, ABS_HAT1Y, ly - 0x20);
490 input_report_abs(ext->input, ABS_HAT2X, rx - 0x20);
491 input_report_abs(ext->input, ABS_HAT2Y, ry - 0x20);
492 input_report_abs(ext->input, ABS_HAT3X, rt - 0x20);
493 input_report_abs(ext->input, ABS_HAT3Y, lt - 0x20);
495 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RIGHT],
496 !!(payload[4] & 0x80));
497 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_DOWN],
498 !!(payload[4] & 0x40));
499 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LT],
500 !!(payload[4] & 0x20));
501 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_MINUS],
502 !!(payload[4] & 0x10));
503 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_HOME],
504 !!(payload[4] & 0x08));
505 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_PLUS],
506 !!(payload[4] & 0x04));
507 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_RT],
508 !!(payload[4] & 0x02));
509 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZL],
510 !!(payload[5] & 0x80));
511 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_B],
512 !!(payload[5] & 0x40));
513 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_Y],
514 !!(payload[5] & 0x20));
515 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_A],
516 !!(payload[5] & 0x10));
517 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_X],
518 !!(payload[5] & 0x08));
519 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_ZR],
520 !!(payload[5] & 0x04));
523 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP],
524 !!(payload[0] & 0x01));
525 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT],
526 !!(payload[1] & 0x01));
528 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_UP],
529 !!(payload[5] & 0x01));
530 input_report_key(ext->input, wiiext_keymap[WIIEXT_KEY_LEFT],
531 !!(payload[5] & 0x02));
534 input_sync(ext->input);
537 static void handler_balance_board(struct wiimote_ext *ext, const __u8 *payload)
542 /* Byte | 8 7 6 5 4 3 2 1 |
543 * -----+--------------------------+
544 * 1 | Top Right <15:8> |
545 * 2 | Top Right <7:0> |
546 * -----+--------------------------+
547 * 3 | Bottom Right <15:8> |
548 * 4 | Bottom Right <7:0> |
549 * -----+--------------------------+
550 * 5 | Top Left <15:8> |
551 * 6 | Top Left <7:0> |
552 * -----+--------------------------+
553 * 7 | Bottom Left <15:8> |
554 * 8 | Bottom Left <7:0> |
555 * -----+--------------------------+
557 * These values represent the weight-measurements of the Wii-balance
558 * board with 16bit precision.
560 * The balance-board is never reported interleaved with motionp.
565 val[0] |= payload[1];
569 val[1] |= payload[3];
573 val[2] |= payload[5];
577 val[3] |= payload[7];
579 /* apply calibration data */
580 for (i = 0; i < 4; i++) {
581 if (val[i] < ext->calib[i][1]) {
582 tmp = val[i] - ext->calib[i][0];
584 tmp /= ext->calib[i][1] - ext->calib[i][0];
586 tmp = val[i] - ext->calib[i][1];
588 tmp /= ext->calib[i][2] - ext->calib[i][1];
594 input_report_abs(ext->input, ABS_HAT0X, val[0]);
595 input_report_abs(ext->input, ABS_HAT0Y, val[1]);
596 input_report_abs(ext->input, ABS_HAT1X, val[2]);
597 input_report_abs(ext->input, ABS_HAT1Y, val[3]);
599 input_sync(ext->input);
602 /* call this with state.lock spinlock held */
603 void wiiext_handle(struct wiimote_data *wdata, const __u8 *payload)
605 struct wiimote_ext *ext = wdata->ext;
610 if (ext->motionp && (payload[5] & 0x02)) {
611 handler_motionp(ext, payload);
612 } else if (ext->ext_type == WIIEXT_NUNCHUCK) {
613 handler_nunchuck(ext, payload);
614 } else if (ext->ext_type == WIIEXT_CLASSIC) {
615 handler_classic(ext, payload);
616 } else if (ext->ext_type == WIIEXT_BALANCE_BOARD) {
617 handler_balance_board(ext, payload);
621 static ssize_t wiiext_show(struct device *dev, struct device_attribute *attr,
624 struct wiimote_data *wdata = dev_to_wii(dev);
625 __u8 type = WIIEXT_NONE;
626 bool motionp = false;
629 spin_lock_irqsave(&wdata->state.lock, flags);
631 motionp = wdata->ext->motionp;
632 type = wdata->ext->ext_type;
634 spin_unlock_irqrestore(&wdata->state.lock, flags);
636 if (type == WIIEXT_NUNCHUCK) {
638 return sprintf(buf, "motionp+nunchuck\n");
640 return sprintf(buf, "nunchuck\n");
641 } else if (type == WIIEXT_CLASSIC) {
643 return sprintf(buf, "motionp+classic\n");
645 return sprintf(buf, "classic\n");
646 } else if (type == WIIEXT_BALANCE_BOARD) {
648 return sprintf(buf, "motionp+balanceboard\n");
650 return sprintf(buf, "balanceboard\n");
653 return sprintf(buf, "motionp\n");
655 return sprintf(buf, "none\n");
659 static DEVICE_ATTR(extension, S_IRUGO, wiiext_show, NULL);
661 static int wiiext_input_open(struct input_dev *dev)
663 struct wiimote_ext *ext = input_get_drvdata(dev);
666 ret = hid_hw_open(ext->wdata->hdev);
670 atomic_inc(&ext->opened);
671 wiiext_schedule(ext);
676 static void wiiext_input_close(struct input_dev *dev)
678 struct wiimote_ext *ext = input_get_drvdata(dev);
680 atomic_dec(&ext->opened);
681 wiiext_schedule(ext);
682 hid_hw_close(ext->wdata->hdev);
685 static int wiiext_mp_open(struct input_dev *dev)
687 struct wiimote_ext *ext = input_get_drvdata(dev);
690 ret = hid_hw_open(ext->wdata->hdev);
694 atomic_inc(&ext->mp_opened);
695 wiiext_schedule(ext);
700 static void wiiext_mp_close(struct input_dev *dev)
702 struct wiimote_ext *ext = input_get_drvdata(dev);
704 atomic_dec(&ext->mp_opened);
705 wiiext_schedule(ext);
706 hid_hw_close(ext->wdata->hdev);
709 /* Initializes the extension driver of a wiimote */
710 int wiiext_init(struct wiimote_data *wdata)
712 struct wiimote_ext *ext;
716 ext = kzalloc(sizeof(*ext), GFP_KERNEL);
721 INIT_WORK(&ext->worker, wiiext_worker);
723 ext->input = input_allocate_device();
729 input_set_drvdata(ext->input, ext);
730 ext->input->open = wiiext_input_open;
731 ext->input->close = wiiext_input_close;
732 ext->input->dev.parent = &wdata->hdev->dev;
733 ext->input->id.bustype = wdata->hdev->bus;
734 ext->input->id.vendor = wdata->hdev->vendor;
735 ext->input->id.product = wdata->hdev->product;
736 ext->input->id.version = wdata->hdev->version;
737 ext->input->name = WIIMOTE_NAME " Extension";
739 set_bit(EV_KEY, ext->input->evbit);
740 for (i = 0; i < WIIEXT_KEY_COUNT; ++i)
741 set_bit(wiiext_keymap[i], ext->input->keybit);
743 set_bit(EV_ABS, ext->input->evbit);
744 set_bit(ABS_HAT0X, ext->input->absbit);
745 set_bit(ABS_HAT0Y, ext->input->absbit);
746 set_bit(ABS_HAT1X, ext->input->absbit);
747 set_bit(ABS_HAT1Y, ext->input->absbit);
748 set_bit(ABS_HAT2X, ext->input->absbit);
749 set_bit(ABS_HAT2Y, ext->input->absbit);
750 set_bit(ABS_HAT3X, ext->input->absbit);
751 set_bit(ABS_HAT3Y, ext->input->absbit);
752 input_set_abs_params(ext->input, ABS_HAT0X, -120, 120, 2, 4);
753 input_set_abs_params(ext->input, ABS_HAT0Y, -120, 120, 2, 4);
754 input_set_abs_params(ext->input, ABS_HAT1X, -30, 30, 1, 1);
755 input_set_abs_params(ext->input, ABS_HAT1Y, -30, 30, 1, 1);
756 input_set_abs_params(ext->input, ABS_HAT2X, -30, 30, 1, 1);
757 input_set_abs_params(ext->input, ABS_HAT2Y, -30, 30, 1, 1);
758 input_set_abs_params(ext->input, ABS_HAT3X, -30, 30, 1, 1);
759 input_set_abs_params(ext->input, ABS_HAT3Y, -30, 30, 1, 1);
760 set_bit(ABS_RX, ext->input->absbit);
761 set_bit(ABS_RY, ext->input->absbit);
762 set_bit(ABS_RZ, ext->input->absbit);
763 input_set_abs_params(ext->input, ABS_RX, -500, 500, 2, 4);
764 input_set_abs_params(ext->input, ABS_RY, -500, 500, 2, 4);
765 input_set_abs_params(ext->input, ABS_RZ, -500, 500, 2, 4);
767 ret = input_register_device(ext->input);
769 input_free_device(ext->input);
773 ext->mp_input = input_allocate_device();
774 if (!ext->mp_input) {
779 input_set_drvdata(ext->mp_input, ext);
780 ext->mp_input->open = wiiext_mp_open;
781 ext->mp_input->close = wiiext_mp_close;
782 ext->mp_input->dev.parent = &wdata->hdev->dev;
783 ext->mp_input->id.bustype = wdata->hdev->bus;
784 ext->mp_input->id.vendor = wdata->hdev->vendor;
785 ext->mp_input->id.product = wdata->hdev->product;
786 ext->mp_input->id.version = wdata->hdev->version;
787 ext->mp_input->name = WIIMOTE_NAME " Motion+";
789 set_bit(EV_ABS, ext->mp_input->evbit);
790 set_bit(ABS_RX, ext->mp_input->absbit);
791 set_bit(ABS_RY, ext->mp_input->absbit);
792 set_bit(ABS_RZ, ext->mp_input->absbit);
793 input_set_abs_params(ext->mp_input, ABS_RX, -160000, 160000, 4, 8);
794 input_set_abs_params(ext->mp_input, ABS_RY, -160000, 160000, 4, 8);
795 input_set_abs_params(ext->mp_input, ABS_RZ, -160000, 160000, 4, 8);
797 ret = input_register_device(ext->mp_input);
799 input_free_device(ext->mp_input);
803 ret = device_create_file(&wdata->hdev->dev, &dev_attr_extension);
807 spin_lock_irqsave(&wdata->state.lock, flags);
809 spin_unlock_irqrestore(&wdata->state.lock, flags);
814 input_unregister_device(ext->mp_input);
816 input_unregister_device(ext->input);
822 /* Deinitializes the extension driver of a wiimote */
823 void wiiext_deinit(struct wiimote_data *wdata)
825 struct wiimote_ext *ext = wdata->ext;
832 * We first unset wdata->ext to avoid further input from the wiimote
833 * core. The worker thread does not access this pointer so it is not
835 * We kill the worker after this so it does not get respawned during
839 spin_lock_irqsave(&wdata->state.lock, flags);
841 spin_unlock_irqrestore(&wdata->state.lock, flags);
843 device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
844 input_unregister_device(ext->mp_input);
845 input_unregister_device(ext->input);
847 cancel_work_sync(&ext->worker);