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[mirror_ubuntu-artful-kernel.git] / drivers / hid / hid-wiimote-core.c
1 /*
2 * HID driver for Nintendo Wii / Wii U peripherals
3 * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
4 */
5
6 /*
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 */
12
13 #include <linux/completion.h>
14 #include <linux/device.h>
15 #include <linux/hid.h>
16 #include <linux/input.h>
17 #include <linux/module.h>
18 #include <linux/mutex.h>
19 #include <linux/spinlock.h>
20 #include "hid-ids.h"
21 #include "hid-wiimote.h"
22
23 /* output queue handling */
24
25 static int wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
26 size_t count)
27 {
28 __u8 *buf;
29 int ret;
30
31 if (!hdev->hid_output_raw_report)
32 return -ENODEV;
33
34 buf = kmemdup(buffer, count, GFP_KERNEL);
35 if (!buf)
36 return -ENOMEM;
37
38 ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
39
40 kfree(buf);
41 return ret;
42 }
43
44 static void wiimote_queue_worker(struct work_struct *work)
45 {
46 struct wiimote_queue *queue = container_of(work, struct wiimote_queue,
47 worker);
48 struct wiimote_data *wdata = container_of(queue, struct wiimote_data,
49 queue);
50 unsigned long flags;
51 int ret;
52
53 spin_lock_irqsave(&wdata->queue.lock, flags);
54
55 while (wdata->queue.head != wdata->queue.tail) {
56 spin_unlock_irqrestore(&wdata->queue.lock, flags);
57 ret = wiimote_hid_send(wdata->hdev,
58 wdata->queue.outq[wdata->queue.tail].data,
59 wdata->queue.outq[wdata->queue.tail].size);
60 if (ret < 0) {
61 spin_lock_irqsave(&wdata->state.lock, flags);
62 wiimote_cmd_abort(wdata);
63 spin_unlock_irqrestore(&wdata->state.lock, flags);
64 }
65 spin_lock_irqsave(&wdata->queue.lock, flags);
66
67 wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE;
68 }
69
70 spin_unlock_irqrestore(&wdata->queue.lock, flags);
71 }
72
73 static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
74 size_t count)
75 {
76 unsigned long flags;
77 __u8 newhead;
78
79 if (count > HID_MAX_BUFFER_SIZE) {
80 hid_warn(wdata->hdev, "Sending too large output report\n");
81
82 spin_lock_irqsave(&wdata->queue.lock, flags);
83 goto out_error;
84 }
85
86 /*
87 * Copy new request into our output queue and check whether the
88 * queue is full. If it is full, discard this request.
89 * If it is empty we need to start a new worker that will
90 * send out the buffer to the hid device.
91 * If the queue is not empty, then there must be a worker
92 * that is currently sending out our buffer and this worker
93 * will reschedule itself until the queue is empty.
94 */
95
96 spin_lock_irqsave(&wdata->queue.lock, flags);
97
98 memcpy(wdata->queue.outq[wdata->queue.head].data, buffer, count);
99 wdata->queue.outq[wdata->queue.head].size = count;
100 newhead = (wdata->queue.head + 1) % WIIMOTE_BUFSIZE;
101
102 if (wdata->queue.head == wdata->queue.tail) {
103 wdata->queue.head = newhead;
104 schedule_work(&wdata->queue.worker);
105 } else if (newhead != wdata->queue.tail) {
106 wdata->queue.head = newhead;
107 } else {
108 hid_warn(wdata->hdev, "Output queue is full");
109 goto out_error;
110 }
111
112 goto out_unlock;
113
114 out_error:
115 wiimote_cmd_abort(wdata);
116 out_unlock:
117 spin_unlock_irqrestore(&wdata->queue.lock, flags);
118 }
119
120 /*
121 * This sets the rumble bit on the given output report if rumble is
122 * currently enabled.
123 * \cmd1 must point to the second byte in the output report => &cmd[1]
124 * This must be called on nearly every output report before passing it
125 * into the output queue!
126 */
127 static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
128 {
129 if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
130 *cmd1 |= 0x01;
131 }
132
133 void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
134 {
135 __u8 cmd[2];
136
137 rumble = !!rumble;
138 if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
139 return;
140
141 if (rumble)
142 wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
143 else
144 wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
145
146 cmd[0] = WIIPROTO_REQ_RUMBLE;
147 cmd[1] = 0;
148
149 wiiproto_keep_rumble(wdata, &cmd[1]);
150 wiimote_queue(wdata, cmd, sizeof(cmd));
151 }
152
153 void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
154 {
155 __u8 cmd[2];
156
157 leds &= WIIPROTO_FLAGS_LEDS;
158 if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
159 return;
160 wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
161
162 cmd[0] = WIIPROTO_REQ_LED;
163 cmd[1] = 0;
164
165 if (leds & WIIPROTO_FLAG_LED1)
166 cmd[1] |= 0x10;
167 if (leds & WIIPROTO_FLAG_LED2)
168 cmd[1] |= 0x20;
169 if (leds & WIIPROTO_FLAG_LED3)
170 cmd[1] |= 0x40;
171 if (leds & WIIPROTO_FLAG_LED4)
172 cmd[1] |= 0x80;
173
174 wiiproto_keep_rumble(wdata, &cmd[1]);
175 wiimote_queue(wdata, cmd, sizeof(cmd));
176 }
177
178 /*
179 * Check what peripherals of the wiimote are currently
180 * active and select a proper DRM that supports all of
181 * the requested data inputs.
182 *
183 * Not all combinations are actually supported. The following
184 * combinations work only with limitations:
185 * - IR cam in extended or full mode disables any data transmission
186 * of extension controllers. There is no DRM mode that supports
187 * extension bytes plus extended/full IR.
188 * - IR cam with accelerometer and extension *_EXT8 is not supported.
189 * However, all extensions that need *_EXT8 are devices that don't
190 * support IR cameras. Hence, this shouldn't happen under normal
191 * operation.
192 * - *_EXT16 is only supported in combination with buttons and
193 * accelerometer. No IR or similar can be active simultaneously. As
194 * above, all modules that require it are mutually exclusive with
195 * IR/etc. so this doesn't matter.
196 */
197 static __u8 select_drm(struct wiimote_data *wdata)
198 {
199 __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
200 bool ext;
201
202 ext = (wdata->state.flags & WIIPROTO_FLAG_EXT_USED) ||
203 (wdata->state.flags & WIIPROTO_FLAG_MP_USED);
204
205 /* some 3rd-party balance-boards are hard-coded to KEE, *sigh* */
206 if (wdata->state.devtype == WIIMOTE_DEV_BALANCE_BOARD) {
207 if (ext)
208 return WIIPROTO_REQ_DRM_KEE;
209 else
210 return WIIPROTO_REQ_DRM_K;
211 }
212
213 if (ir == WIIPROTO_FLAG_IR_BASIC) {
214 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
215 /* GEN10 and ealier devices bind IR formats to DRMs.
216 * Hence, we cannot use DRM_KAI here as it might be
217 * bound to IR_EXT. Use DRM_KAIE unconditionally so we
218 * work with all devices and our parsers can use the
219 * fixed formats, too. */
220 return WIIPROTO_REQ_DRM_KAIE;
221 } else {
222 return WIIPROTO_REQ_DRM_KIE;
223 }
224 } else if (ir == WIIPROTO_FLAG_IR_EXT) {
225 return WIIPROTO_REQ_DRM_KAI;
226 } else if (ir == WIIPROTO_FLAG_IR_FULL) {
227 return WIIPROTO_REQ_DRM_SKAI1;
228 } else {
229 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
230 if (ext)
231 return WIIPROTO_REQ_DRM_KAE;
232 else
233 return WIIPROTO_REQ_DRM_KA;
234 } else {
235 if (ext)
236 return WIIPROTO_REQ_DRM_KEE;
237 else
238 return WIIPROTO_REQ_DRM_K;
239 }
240 }
241 }
242
243 void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
244 {
245 __u8 cmd[3];
246
247 if (wdata->state.flags & WIIPROTO_FLAG_DRM_LOCKED)
248 drm = wdata->state.drm;
249 else if (drm == WIIPROTO_REQ_NULL)
250 drm = select_drm(wdata);
251
252 cmd[0] = WIIPROTO_REQ_DRM;
253 cmd[1] = 0;
254 cmd[2] = drm;
255
256 wdata->state.drm = drm;
257 wiiproto_keep_rumble(wdata, &cmd[1]);
258 wiimote_queue(wdata, cmd, sizeof(cmd));
259 }
260
261 void wiiproto_req_status(struct wiimote_data *wdata)
262 {
263 __u8 cmd[2];
264
265 cmd[0] = WIIPROTO_REQ_SREQ;
266 cmd[1] = 0;
267
268 wiiproto_keep_rumble(wdata, &cmd[1]);
269 wiimote_queue(wdata, cmd, sizeof(cmd));
270 }
271
272 void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
273 {
274 accel = !!accel;
275 if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
276 return;
277
278 if (accel)
279 wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
280 else
281 wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
282
283 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
284 }
285
286 void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
287 {
288 __u8 cmd[2];
289
290 cmd[0] = WIIPROTO_REQ_IR1;
291 cmd[1] = flags;
292
293 wiiproto_keep_rumble(wdata, &cmd[1]);
294 wiimote_queue(wdata, cmd, sizeof(cmd));
295 }
296
297 void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
298 {
299 __u8 cmd[2];
300
301 cmd[0] = WIIPROTO_REQ_IR2;
302 cmd[1] = flags;
303
304 wiiproto_keep_rumble(wdata, &cmd[1]);
305 wiimote_queue(wdata, cmd, sizeof(cmd));
306 }
307
308 #define wiiproto_req_wreg(wdata, os, buf, sz) \
309 wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
310
311 #define wiiproto_req_weeprom(wdata, os, buf, sz) \
312 wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
313
314 static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
315 __u32 offset, const __u8 *buf, __u8 size)
316 {
317 __u8 cmd[22];
318
319 if (size > 16 || size == 0) {
320 hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
321 return;
322 }
323
324 memset(cmd, 0, sizeof(cmd));
325 cmd[0] = WIIPROTO_REQ_WMEM;
326 cmd[2] = (offset >> 16) & 0xff;
327 cmd[3] = (offset >> 8) & 0xff;
328 cmd[4] = offset & 0xff;
329 cmd[5] = size;
330 memcpy(&cmd[6], buf, size);
331
332 if (!eeprom)
333 cmd[1] |= 0x04;
334
335 wiiproto_keep_rumble(wdata, &cmd[1]);
336 wiimote_queue(wdata, cmd, sizeof(cmd));
337 }
338
339 void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
340 __u16 size)
341 {
342 __u8 cmd[7];
343
344 if (size == 0) {
345 hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
346 return;
347 }
348
349 cmd[0] = WIIPROTO_REQ_RMEM;
350 cmd[1] = 0;
351 cmd[2] = (offset >> 16) & 0xff;
352 cmd[3] = (offset >> 8) & 0xff;
353 cmd[4] = offset & 0xff;
354 cmd[5] = (size >> 8) & 0xff;
355 cmd[6] = size & 0xff;
356
357 if (!eeprom)
358 cmd[1] |= 0x04;
359
360 wiiproto_keep_rumble(wdata, &cmd[1]);
361 wiimote_queue(wdata, cmd, sizeof(cmd));
362 }
363
364 /* requries the cmd-mutex to be held */
365 int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
366 const __u8 *wmem, __u8 size)
367 {
368 unsigned long flags;
369 int ret;
370
371 spin_lock_irqsave(&wdata->state.lock, flags);
372 wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
373 wiiproto_req_wreg(wdata, offset, wmem, size);
374 spin_unlock_irqrestore(&wdata->state.lock, flags);
375
376 ret = wiimote_cmd_wait(wdata);
377 if (!ret && wdata->state.cmd_err)
378 ret = -EIO;
379
380 return ret;
381 }
382
383 /* requries the cmd-mutex to be held */
384 ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
385 __u8 size)
386 {
387 unsigned long flags;
388 ssize_t ret;
389
390 spin_lock_irqsave(&wdata->state.lock, flags);
391 wdata->state.cmd_read_size = size;
392 wdata->state.cmd_read_buf = rmem;
393 wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
394 wiiproto_req_rreg(wdata, offset, size);
395 spin_unlock_irqrestore(&wdata->state.lock, flags);
396
397 ret = wiimote_cmd_wait(wdata);
398
399 spin_lock_irqsave(&wdata->state.lock, flags);
400 wdata->state.cmd_read_buf = NULL;
401 spin_unlock_irqrestore(&wdata->state.lock, flags);
402
403 if (!ret) {
404 if (wdata->state.cmd_read_size == 0)
405 ret = -EIO;
406 else
407 ret = wdata->state.cmd_read_size;
408 }
409
410 return ret;
411 }
412
413 /* requires the cmd-mutex to be held */
414 static int wiimote_cmd_init_ext(struct wiimote_data *wdata)
415 {
416 __u8 wmem;
417 int ret;
418
419 /* initialize extension */
420 wmem = 0x55;
421 ret = wiimote_cmd_write(wdata, 0xa400f0, &wmem, sizeof(wmem));
422 if (ret)
423 return ret;
424
425 /* disable default encryption */
426 wmem = 0x0;
427 ret = wiimote_cmd_write(wdata, 0xa400fb, &wmem, sizeof(wmem));
428 if (ret)
429 return ret;
430
431 return 0;
432 }
433
434 /* requires the cmd-mutex to be held */
435 static __u8 wiimote_cmd_read_ext(struct wiimote_data *wdata, __u8 *rmem)
436 {
437 int ret;
438
439 /* read extension ID */
440 ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6);
441 if (ret != 6)
442 return WIIMOTE_EXT_NONE;
443
444 hid_dbg(wdata->hdev, "extension ID: %6phC\n", rmem);
445
446 if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff &&
447 rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff)
448 return WIIMOTE_EXT_NONE;
449
450 if (rmem[4] == 0x00 && rmem[5] == 0x00)
451 return WIIMOTE_EXT_NUNCHUK;
452 if (rmem[4] == 0x01 && rmem[5] == 0x01)
453 return WIIMOTE_EXT_CLASSIC_CONTROLLER;
454 if (rmem[4] == 0x04 && rmem[5] == 0x02)
455 return WIIMOTE_EXT_BALANCE_BOARD;
456 if (rmem[4] == 0x01 && rmem[5] == 0x20)
457 return WIIMOTE_EXT_PRO_CONTROLLER;
458
459 return WIIMOTE_EXT_UNKNOWN;
460 }
461
462 /* requires the cmd-mutex to be held */
463 static int wiimote_cmd_init_mp(struct wiimote_data *wdata)
464 {
465 __u8 wmem;
466 int ret;
467
468 /* initialize MP */
469 wmem = 0x55;
470 ret = wiimote_cmd_write(wdata, 0xa600f0, &wmem, sizeof(wmem));
471 if (ret)
472 return ret;
473
474 /* disable default encryption */
475 wmem = 0x0;
476 ret = wiimote_cmd_write(wdata, 0xa600fb, &wmem, sizeof(wmem));
477 if (ret)
478 return ret;
479
480 return 0;
481 }
482
483 /* requires the cmd-mutex to be held */
484 static bool wiimote_cmd_map_mp(struct wiimote_data *wdata, __u8 exttype)
485 {
486 __u8 wmem;
487
488 /* map MP with correct pass-through mode */
489 switch (exttype) {
490 case WIIMOTE_EXT_CLASSIC_CONTROLLER:
491 wmem = 0x07;
492 break;
493 case WIIMOTE_EXT_NUNCHUK:
494 wmem = 0x05;
495 break;
496 default:
497 wmem = 0x04;
498 break;
499 }
500
501 return wiimote_cmd_write(wdata, 0xa600fe, &wmem, sizeof(wmem));
502 }
503
504 /* requires the cmd-mutex to be held */
505 static bool wiimote_cmd_read_mp(struct wiimote_data *wdata, __u8 *rmem)
506 {
507 int ret;
508
509 /* read motion plus ID */
510 ret = wiimote_cmd_read(wdata, 0xa600fa, rmem, 6);
511 if (ret != 6)
512 return false;
513
514 hid_dbg(wdata->hdev, "motion plus ID: %6phC\n", rmem);
515
516 if (rmem[5] == 0x05)
517 return true;
518
519 hid_info(wdata->hdev, "unknown motion plus ID: %6phC\n", rmem);
520
521 return false;
522 }
523
524 /* requires the cmd-mutex to be held */
525 static __u8 wiimote_cmd_read_mp_mapped(struct wiimote_data *wdata)
526 {
527 int ret;
528 __u8 rmem[6];
529
530 /* read motion plus ID */
531 ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6);
532 if (ret != 6)
533 return WIIMOTE_MP_NONE;
534
535 hid_dbg(wdata->hdev, "mapped motion plus ID: %6phC\n", rmem);
536
537 if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff &&
538 rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff)
539 return WIIMOTE_MP_NONE;
540
541 if (rmem[4] == 0x04 && rmem[5] == 0x05)
542 return WIIMOTE_MP_SINGLE;
543 else if (rmem[4] == 0x05 && rmem[5] == 0x05)
544 return WIIMOTE_MP_PASSTHROUGH_NUNCHUK;
545 else if (rmem[4] == 0x07 && rmem[5] == 0x05)
546 return WIIMOTE_MP_PASSTHROUGH_CLASSIC;
547
548 return WIIMOTE_MP_UNKNOWN;
549 }
550
551 /* device module handling */
552
553 static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = {
554 [WIIMOTE_DEV_PENDING] = (const __u8[]){
555 WIIMOD_NULL,
556 },
557 [WIIMOTE_DEV_UNKNOWN] = (const __u8[]){
558 WIIMOD_NO_MP,
559 WIIMOD_NULL,
560 },
561 [WIIMOTE_DEV_GENERIC] = (const __u8[]){
562 WIIMOD_KEYS,
563 WIIMOD_RUMBLE,
564 WIIMOD_BATTERY,
565 WIIMOD_LED1,
566 WIIMOD_LED2,
567 WIIMOD_LED3,
568 WIIMOD_LED4,
569 WIIMOD_ACCEL,
570 WIIMOD_IR,
571 WIIMOD_NULL,
572 },
573 [WIIMOTE_DEV_GEN10] = (const __u8[]){
574 WIIMOD_KEYS,
575 WIIMOD_RUMBLE,
576 WIIMOD_BATTERY,
577 WIIMOD_LED1,
578 WIIMOD_LED2,
579 WIIMOD_LED3,
580 WIIMOD_LED4,
581 WIIMOD_ACCEL,
582 WIIMOD_IR,
583 WIIMOD_NULL,
584 },
585 [WIIMOTE_DEV_GEN20] = (const __u8[]){
586 WIIMOD_KEYS,
587 WIIMOD_RUMBLE,
588 WIIMOD_BATTERY,
589 WIIMOD_LED1,
590 WIIMOD_LED2,
591 WIIMOD_LED3,
592 WIIMOD_LED4,
593 WIIMOD_ACCEL,
594 WIIMOD_IR,
595 WIIMOD_BUILTIN_MP,
596 WIIMOD_NULL,
597 },
598 [WIIMOTE_DEV_BALANCE_BOARD] = (const __u8[]) {
599 WIIMOD_BATTERY,
600 WIIMOD_LED1,
601 WIIMOD_NO_MP,
602 WIIMOD_NULL,
603 },
604 [WIIMOTE_DEV_PRO_CONTROLLER] = (const __u8[]) {
605 WIIMOD_BATTERY,
606 WIIMOD_LED1,
607 WIIMOD_LED2,
608 WIIMOD_LED3,
609 WIIMOD_LED4,
610 WIIMOD_NO_MP,
611 WIIMOD_NULL,
612 },
613 };
614
615 static void wiimote_modules_load(struct wiimote_data *wdata,
616 unsigned int devtype)
617 {
618 bool need_input = false;
619 const __u8 *mods, *iter;
620 const struct wiimod_ops *ops;
621 int ret;
622
623 mods = wiimote_devtype_mods[devtype];
624
625 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
626 if (wiimod_table[*iter]->flags & WIIMOD_FLAG_INPUT) {
627 need_input = true;
628 break;
629 }
630 }
631
632 if (need_input) {
633 wdata->input = input_allocate_device();
634 if (!wdata->input)
635 return;
636
637 input_set_drvdata(wdata->input, wdata);
638 wdata->input->dev.parent = &wdata->hdev->dev;
639 wdata->input->id.bustype = wdata->hdev->bus;
640 wdata->input->id.vendor = wdata->hdev->vendor;
641 wdata->input->id.product = wdata->hdev->product;
642 wdata->input->id.version = wdata->hdev->version;
643 wdata->input->name = WIIMOTE_NAME;
644 }
645
646 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
647 ops = wiimod_table[*iter];
648 if (!ops->probe)
649 continue;
650
651 ret = ops->probe(ops, wdata);
652 if (ret)
653 goto error;
654 }
655
656 if (wdata->input) {
657 ret = input_register_device(wdata->input);
658 if (ret)
659 goto error;
660 }
661
662 spin_lock_irq(&wdata->state.lock);
663 wdata->state.devtype = devtype;
664 spin_unlock_irq(&wdata->state.lock);
665 return;
666
667 error:
668 for ( ; iter-- != mods; ) {
669 ops = wiimod_table[*iter];
670 if (ops->remove)
671 ops->remove(ops, wdata);
672 }
673
674 if (wdata->input) {
675 input_free_device(wdata->input);
676 wdata->input = NULL;
677 }
678 }
679
680 static void wiimote_modules_unload(struct wiimote_data *wdata)
681 {
682 const __u8 *mods, *iter;
683 const struct wiimod_ops *ops;
684 unsigned long flags;
685
686 mods = wiimote_devtype_mods[wdata->state.devtype];
687
688 spin_lock_irqsave(&wdata->state.lock, flags);
689 wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
690 spin_unlock_irqrestore(&wdata->state.lock, flags);
691
692 /* find end of list */
693 for (iter = mods; *iter != WIIMOD_NULL; ++iter)
694 /* empty */ ;
695
696 if (wdata->input) {
697 input_get_device(wdata->input);
698 input_unregister_device(wdata->input);
699 }
700
701 for ( ; iter-- != mods; ) {
702 ops = wiimod_table[*iter];
703 if (ops->remove)
704 ops->remove(ops, wdata);
705 }
706
707 if (wdata->input) {
708 input_put_device(wdata->input);
709 wdata->input = NULL;
710 }
711 }
712
713 /* device extension handling */
714
715 static void wiimote_ext_load(struct wiimote_data *wdata, unsigned int ext)
716 {
717 unsigned long flags;
718 const struct wiimod_ops *ops;
719 int ret;
720
721 ops = wiimod_ext_table[ext];
722
723 if (ops->probe) {
724 ret = ops->probe(ops, wdata);
725 if (ret)
726 ext = WIIMOTE_EXT_UNKNOWN;
727 }
728
729 spin_lock_irqsave(&wdata->state.lock, flags);
730 wdata->state.exttype = ext;
731 spin_unlock_irqrestore(&wdata->state.lock, flags);
732 }
733
734 static void wiimote_ext_unload(struct wiimote_data *wdata)
735 {
736 unsigned long flags;
737 const struct wiimod_ops *ops;
738
739 ops = wiimod_ext_table[wdata->state.exttype];
740
741 spin_lock_irqsave(&wdata->state.lock, flags);
742 wdata->state.exttype = WIIMOTE_EXT_UNKNOWN;
743 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
744 spin_unlock_irqrestore(&wdata->state.lock, flags);
745
746 if (ops->remove)
747 ops->remove(ops, wdata);
748 }
749
750 static void wiimote_mp_load(struct wiimote_data *wdata)
751 {
752 unsigned long flags;
753 const struct wiimod_ops *ops;
754 int ret;
755 __u8 mode = 2;
756
757 ops = &wiimod_mp;
758 if (ops->probe) {
759 ret = ops->probe(ops, wdata);
760 if (ret)
761 mode = 1;
762 }
763
764 spin_lock_irqsave(&wdata->state.lock, flags);
765 wdata->state.mp = mode;
766 spin_unlock_irqrestore(&wdata->state.lock, flags);
767 }
768
769 static void wiimote_mp_unload(struct wiimote_data *wdata)
770 {
771 unsigned long flags;
772 const struct wiimod_ops *ops;
773
774 if (wdata->state.mp < 2)
775 return;
776
777 ops = &wiimod_mp;
778
779 spin_lock_irqsave(&wdata->state.lock, flags);
780 wdata->state.mp = 0;
781 wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
782 spin_unlock_irqrestore(&wdata->state.lock, flags);
783
784 if (ops->remove)
785 ops->remove(ops, wdata);
786 }
787
788 /* device (re-)initialization and detection */
789
790 static const char *wiimote_devtype_names[WIIMOTE_DEV_NUM] = {
791 [WIIMOTE_DEV_PENDING] = "Pending",
792 [WIIMOTE_DEV_UNKNOWN] = "Unknown",
793 [WIIMOTE_DEV_GENERIC] = "Generic",
794 [WIIMOTE_DEV_GEN10] = "Nintendo Wii Remote (Gen 1)",
795 [WIIMOTE_DEV_GEN20] = "Nintendo Wii Remote Plus (Gen 2)",
796 [WIIMOTE_DEV_BALANCE_BOARD] = "Nintendo Wii Balance Board",
797 [WIIMOTE_DEV_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller",
798 };
799
800 /* Try to guess the device type based on all collected information. We
801 * first try to detect by static extension types, then VID/PID and the
802 * device name. If we cannot detect the device, we use
803 * WIIMOTE_DEV_GENERIC so all modules will get probed on the device. */
804 static void wiimote_init_set_type(struct wiimote_data *wdata,
805 __u8 exttype)
806 {
807 __u8 devtype = WIIMOTE_DEV_GENERIC;
808 __u16 vendor, product;
809 const char *name;
810
811 vendor = wdata->hdev->vendor;
812 product = wdata->hdev->product;
813 name = wdata->hdev->name;
814
815 if (exttype == WIIMOTE_EXT_BALANCE_BOARD) {
816 devtype = WIIMOTE_DEV_BALANCE_BOARD;
817 goto done;
818 } else if (exttype == WIIMOTE_EXT_PRO_CONTROLLER) {
819 devtype = WIIMOTE_DEV_PRO_CONTROLLER;
820 goto done;
821 }
822
823 if (!strcmp(name, "Nintendo RVL-CNT-01")) {
824 devtype = WIIMOTE_DEV_GEN10;
825 goto done;
826 } else if (!strcmp(name, "Nintendo RVL-CNT-01-TR")) {
827 devtype = WIIMOTE_DEV_GEN20;
828 goto done;
829 } else if (!strcmp(name, "Nintendo RVL-WBC-01")) {
830 devtype = WIIMOTE_DEV_BALANCE_BOARD;
831 goto done;
832 } else if (!strcmp(name, "Nintendo RVL-CNT-01-UC")) {
833 devtype = WIIMOTE_DEV_PRO_CONTROLLER;
834 goto done;
835 }
836
837 if (vendor == USB_VENDOR_ID_NINTENDO ||
838 vendor == USB_VENDOR_ID_NINTENDO2) {
839 if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE) {
840 devtype = WIIMOTE_DEV_GEN10;
841 goto done;
842 } else if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE2) {
843 devtype = WIIMOTE_DEV_GEN20;
844 goto done;
845 }
846 }
847
848 done:
849 if (devtype == WIIMOTE_DEV_GENERIC)
850 hid_info(wdata->hdev, "cannot detect device; NAME: %s VID: %04x PID: %04x EXT: %04x\n",
851 name, vendor, product, exttype);
852 else
853 hid_info(wdata->hdev, "detected device: %s\n",
854 wiimote_devtype_names[devtype]);
855
856 wiimote_modules_load(wdata, devtype);
857 }
858
859 static void wiimote_init_detect(struct wiimote_data *wdata)
860 {
861 __u8 exttype = WIIMOTE_EXT_NONE, extdata[6];
862 bool ext;
863 int ret;
864
865 wiimote_cmd_acquire_noint(wdata);
866
867 spin_lock_irq(&wdata->state.lock);
868 wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
869 wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
870 wiiproto_req_status(wdata);
871 spin_unlock_irq(&wdata->state.lock);
872
873 ret = wiimote_cmd_wait_noint(wdata);
874 if (ret)
875 goto out_release;
876
877 spin_lock_irq(&wdata->state.lock);
878 ext = wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED;
879 spin_unlock_irq(&wdata->state.lock);
880
881 if (!ext)
882 goto out_release;
883
884 wiimote_cmd_init_ext(wdata);
885 exttype = wiimote_cmd_read_ext(wdata, extdata);
886
887 out_release:
888 wiimote_cmd_release(wdata);
889 wiimote_init_set_type(wdata, exttype);
890
891 /* schedule MP timer */
892 spin_lock_irq(&wdata->state.lock);
893 if (!(wdata->state.flags & WIIPROTO_FLAG_BUILTIN_MP) &&
894 !(wdata->state.flags & WIIPROTO_FLAG_NO_MP))
895 mod_timer(&wdata->timer, jiffies + HZ * 4);
896 spin_unlock_irq(&wdata->state.lock);
897 }
898
899 /*
900 * MP hotplug events are not generated by the wiimote. Therefore, we need
901 * polling to detect it. We use a 4s interval for polling MP registers. This
902 * seems reasonable considering applications can trigger it manually via
903 * sysfs requests.
904 */
905 static void wiimote_init_poll_mp(struct wiimote_data *wdata)
906 {
907 bool mp;
908 __u8 mpdata[6];
909
910 wiimote_cmd_acquire_noint(wdata);
911 wiimote_cmd_init_mp(wdata);
912 mp = wiimote_cmd_read_mp(wdata, mpdata);
913 wiimote_cmd_release(wdata);
914
915 /* load/unload MP module if it changed */
916 if (mp) {
917 if (!wdata->state.mp) {
918 hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n");
919 wiimote_mp_load(wdata);
920 }
921 } else if (wdata->state.mp) {
922 wiimote_mp_unload(wdata);
923 }
924
925 mod_timer(&wdata->timer, jiffies + HZ * 4);
926 }
927
928 /*
929 * Check whether the wiimote is in the expected state. The extension registers
930 * may change during hotplug and initialization so we might get hotplug events
931 * that we caused by remapping some memory.
932 * We use some heuristics here to check known states. If the wiimote is in the
933 * expected state, we can ignore the hotplug event.
934 *
935 * Returns "true" if the device is in expected state, "false" if we should
936 * redo hotplug handling and extension initialization.
937 */
938 static bool wiimote_init_check(struct wiimote_data *wdata)
939 {
940 __u32 flags;
941 __u8 type, data[6];
942 bool ret, poll_mp;
943
944 spin_lock_irq(&wdata->state.lock);
945 flags = wdata->state.flags;
946 spin_unlock_irq(&wdata->state.lock);
947
948 wiimote_cmd_acquire_noint(wdata);
949
950 /* If MP is used and active, but the extension is not, we expect:
951 * read_mp_mapped() == WIIMOTE_MP_SINGLE
952 * state.flags == !EXT_ACTIVE && !MP_PLUGGED && MP_ACTIVE
953 * We do not check EXT_PLUGGED because it might change during
954 * initialization of MP without extensions.
955 * - If MP is unplugged/replugged, read_mp_mapped() fails
956 * - If EXT is plugged, MP_PLUGGED will get set */
957 if (wdata->state.exttype == WIIMOTE_EXT_NONE &&
958 wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) {
959 type = wiimote_cmd_read_mp_mapped(wdata);
960 ret = type == WIIMOTE_MP_SINGLE;
961
962 spin_lock_irq(&wdata->state.lock);
963 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
964 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED);
965 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
966 spin_unlock_irq(&wdata->state.lock);
967
968 if (!ret)
969 hid_dbg(wdata->hdev, "state left: !EXT && MP\n");
970
971 /* while MP is mapped, we get EXT_PLUGGED events */
972 poll_mp = false;
973
974 goto out_release;
975 }
976
977 /* If MP is unused, but the extension port is used, we expect:
978 * read_ext == state.exttype
979 * state.flags == !MP_ACTIVE && EXT_ACTIVE
980 * - If MP is plugged/unplugged, our timer detects it
981 * - If EXT is unplugged/replugged, EXT_ACTIVE will become unset */
982 if (!(flags & WIIPROTO_FLAG_MP_USED) &&
983 wdata->state.exttype != WIIMOTE_EXT_NONE) {
984 type = wiimote_cmd_read_ext(wdata, data);
985 ret = type == wdata->state.exttype;
986
987 spin_lock_irq(&wdata->state.lock);
988 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
989 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
990 spin_unlock_irq(&wdata->state.lock);
991
992 if (!ret)
993 hid_dbg(wdata->hdev, "state left: EXT && !MP\n");
994
995 /* poll MP for hotplug events */
996 poll_mp = true;
997
998 goto out_release;
999 }
1000
1001 /* If neither MP nor an extension are used, we expect:
1002 * read_ext() == WIIMOTE_EXT_NONE
1003 * state.flags == !MP_ACTIVE && !EXT_ACTIVE && !EXT_PLUGGED
1004 * No need to perform any action in this case as everything is
1005 * disabled already.
1006 * - If MP is plugged/unplugged, our timer detects it
1007 * - If EXT is plugged, EXT_PLUGGED will be set */
1008 if (!(flags & WIIPROTO_FLAG_MP_USED) &&
1009 wdata->state.exttype == WIIMOTE_EXT_NONE) {
1010 type = wiimote_cmd_read_ext(wdata, data);
1011 ret = type == wdata->state.exttype;
1012
1013 spin_lock_irq(&wdata->state.lock);
1014 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
1015 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
1016 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED);
1017 spin_unlock_irq(&wdata->state.lock);
1018
1019 if (!ret)
1020 hid_dbg(wdata->hdev, "state left: !EXT && !MP\n");
1021
1022 /* poll MP for hotplug events */
1023 poll_mp = true;
1024
1025 goto out_release;
1026 }
1027
1028 /* The trickiest part is if both EXT and MP are active. We cannot read
1029 * the EXT ID, anymore, because MP is mapped over it. However, we use
1030 * a handy trick here:
1031 * - EXT_ACTIVE is unset whenever !MP_PLUGGED is sent
1032 * MP_PLUGGED might be re-sent again before we are scheduled, but
1033 * EXT_ACTIVE will stay unset.
1034 * So it is enough to check for mp_mapped() and MP_ACTIVE and
1035 * EXT_ACTIVE. EXT_PLUGGED is a sanity check. */
1036 if (wdata->state.exttype != WIIMOTE_EXT_NONE &&
1037 wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) {
1038 type = wiimote_cmd_read_mp_mapped(wdata);
1039 ret = type != WIIMOTE_MP_NONE;
1040 ret = ret && type != WIIMOTE_MP_UNKNOWN;
1041 ret = ret && type != WIIMOTE_MP_SINGLE;
1042
1043 spin_lock_irq(&wdata->state.lock);
1044 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED);
1045 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
1046 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
1047 spin_unlock_irq(&wdata->state.lock);
1048
1049 if (!ret)
1050 hid_dbg(wdata->hdev, "state left: EXT && MP\n");
1051
1052 /* while MP is mapped, we get EXT_PLUGGED events */
1053 poll_mp = false;
1054
1055 goto out_release;
1056 }
1057
1058 /* unknown state */
1059 ret = false;
1060
1061 out_release:
1062 wiimote_cmd_release(wdata);
1063
1064 /* only poll for MP if requested and if state didn't change */
1065 if (ret && poll_mp && !(flags & WIIPROTO_FLAG_BUILTIN_MP) &&
1066 !(flags & WIIPROTO_FLAG_NO_MP))
1067 wiimote_init_poll_mp(wdata);
1068
1069 return ret;
1070 }
1071
1072 static const char *wiimote_exttype_names[WIIMOTE_EXT_NUM] = {
1073 [WIIMOTE_EXT_NONE] = "None",
1074 [WIIMOTE_EXT_UNKNOWN] = "Unknown",
1075 [WIIMOTE_EXT_NUNCHUK] = "Nintendo Wii Nunchuk",
1076 [WIIMOTE_EXT_CLASSIC_CONTROLLER] = "Nintendo Wii Classic Controller",
1077 [WIIMOTE_EXT_BALANCE_BOARD] = "Nintendo Wii Balance Board",
1078 [WIIMOTE_EXT_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller",
1079 };
1080
1081 /*
1082 * Handle hotplug events
1083 * If we receive an hotplug event and the device-check failed, we deinitialize
1084 * the extension ports, re-read all extension IDs and set the device into
1085 * the desired state. This involves mapping MP into the main extension
1086 * registers, setting up extension passthrough modes and initializing the
1087 * requested extensions.
1088 */
1089 static void wiimote_init_hotplug(struct wiimote_data *wdata)
1090 {
1091 __u8 exttype, extdata[6], mpdata[6];
1092 __u32 flags;
1093 bool mp;
1094
1095 hid_dbg(wdata->hdev, "detect extensions..\n");
1096
1097 wiimote_cmd_acquire_noint(wdata);
1098
1099 spin_lock_irq(&wdata->state.lock);
1100
1101 /* get state snapshot that we will then work on */
1102 flags = wdata->state.flags;
1103
1104 /* disable event forwarding temporarily */
1105 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1106 wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE;
1107
1108 spin_unlock_irq(&wdata->state.lock);
1109
1110 /* init extension and MP (deactivates current extension or MP) */
1111 wiimote_cmd_init_ext(wdata);
1112 if (flags & WIIPROTO_FLAG_NO_MP) {
1113 mp = false;
1114 } else {
1115 wiimote_cmd_init_mp(wdata);
1116 mp = wiimote_cmd_read_mp(wdata, mpdata);
1117 }
1118 exttype = wiimote_cmd_read_ext(wdata, extdata);
1119
1120 wiimote_cmd_release(wdata);
1121
1122 /* load/unload extension module if it changed */
1123 if (exttype != wdata->state.exttype) {
1124 /* unload previous extension */
1125 wiimote_ext_unload(wdata);
1126
1127 if (exttype == WIIMOTE_EXT_UNKNOWN) {
1128 hid_info(wdata->hdev, "cannot detect extension; %6phC\n",
1129 extdata);
1130 } else if (exttype == WIIMOTE_EXT_NONE) {
1131 spin_lock_irq(&wdata->state.lock);
1132 wdata->state.exttype = WIIMOTE_EXT_NONE;
1133 spin_unlock_irq(&wdata->state.lock);
1134 } else {
1135 hid_info(wdata->hdev, "detected extension: %s\n",
1136 wiimote_exttype_names[exttype]);
1137 /* try loading new extension */
1138 wiimote_ext_load(wdata, exttype);
1139 }
1140 }
1141
1142 /* load/unload MP module if it changed */
1143 if (mp) {
1144 if (!wdata->state.mp) {
1145 hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n");
1146 wiimote_mp_load(wdata);
1147 }
1148 } else if (wdata->state.mp) {
1149 wiimote_mp_unload(wdata);
1150 }
1151
1152 /* if MP is not used, do not map or activate it */
1153 if (!(flags & WIIPROTO_FLAG_MP_USED))
1154 mp = false;
1155
1156 /* map MP into main extension registers if used */
1157 if (mp) {
1158 wiimote_cmd_acquire_noint(wdata);
1159 wiimote_cmd_map_mp(wdata, exttype);
1160 wiimote_cmd_release(wdata);
1161
1162 /* delete MP hotplug timer */
1163 del_timer_sync(&wdata->timer);
1164 } else {
1165 /* reschedule MP hotplug timer */
1166 if (!(flags & WIIPROTO_FLAG_BUILTIN_MP) &&
1167 !(flags & WIIPROTO_FLAG_NO_MP))
1168 mod_timer(&wdata->timer, jiffies + HZ * 4);
1169 }
1170
1171 spin_lock_irq(&wdata->state.lock);
1172
1173 /* enable data forwarding again and set expected hotplug state */
1174 if (mp) {
1175 wdata->state.flags |= WIIPROTO_FLAG_MP_ACTIVE;
1176 if (wdata->state.exttype == WIIMOTE_EXT_NONE) {
1177 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1178 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1179 } else {
1180 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1181 wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED;
1182 wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE;
1183 }
1184 } else if (wdata->state.exttype != WIIMOTE_EXT_NONE) {
1185 wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE;
1186 }
1187
1188 /* request status report for hotplug state updates */
1189 wiiproto_req_status(wdata);
1190
1191 spin_unlock_irq(&wdata->state.lock);
1192
1193 hid_dbg(wdata->hdev, "detected extensions: MP: %d EXT: %d\n",
1194 wdata->state.mp, wdata->state.exttype);
1195 }
1196
1197 static void wiimote_init_worker(struct work_struct *work)
1198 {
1199 struct wiimote_data *wdata = container_of(work, struct wiimote_data,
1200 init_worker);
1201 bool changed = false;
1202
1203 if (wdata->state.devtype == WIIMOTE_DEV_PENDING) {
1204 wiimote_init_detect(wdata);
1205 changed = true;
1206 }
1207
1208 if (changed || !wiimote_init_check(wdata))
1209 wiimote_init_hotplug(wdata);
1210
1211 if (changed)
1212 kobject_uevent(&wdata->hdev->dev.kobj, KOBJ_CHANGE);
1213 }
1214
1215 void __wiimote_schedule(struct wiimote_data *wdata)
1216 {
1217 if (!(wdata->state.flags & WIIPROTO_FLAG_EXITING))
1218 schedule_work(&wdata->init_worker);
1219 }
1220
1221 static void wiimote_schedule(struct wiimote_data *wdata)
1222 {
1223 unsigned long flags;
1224
1225 spin_lock_irqsave(&wdata->state.lock, flags);
1226 __wiimote_schedule(wdata);
1227 spin_unlock_irqrestore(&wdata->state.lock, flags);
1228 }
1229
1230 static void wiimote_init_timeout(unsigned long arg)
1231 {
1232 struct wiimote_data *wdata = (void*)arg;
1233
1234 wiimote_schedule(wdata);
1235 }
1236
1237 /* protocol handlers */
1238
1239 static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
1240 {
1241 const __u8 *iter, *mods;
1242 const struct wiimod_ops *ops;
1243
1244 ops = wiimod_ext_table[wdata->state.exttype];
1245 if (ops->in_keys) {
1246 ops->in_keys(wdata, payload);
1247 return;
1248 }
1249
1250 mods = wiimote_devtype_mods[wdata->state.devtype];
1251 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1252 ops = wiimod_table[*iter];
1253 if (ops->in_keys) {
1254 ops->in_keys(wdata, payload);
1255 break;
1256 }
1257 }
1258 }
1259
1260 static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
1261 {
1262 const __u8 *iter, *mods;
1263 const struct wiimod_ops *ops;
1264
1265 ops = wiimod_ext_table[wdata->state.exttype];
1266 if (ops->in_accel) {
1267 ops->in_accel(wdata, payload);
1268 return;
1269 }
1270
1271 mods = wiimote_devtype_mods[wdata->state.devtype];
1272 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1273 ops = wiimod_table[*iter];
1274 if (ops->in_accel) {
1275 ops->in_accel(wdata, payload);
1276 break;
1277 }
1278 }
1279 }
1280
1281 static bool valid_ext_handler(const struct wiimod_ops *ops, size_t len)
1282 {
1283 if (!ops->in_ext)
1284 return false;
1285 if ((ops->flags & WIIMOD_FLAG_EXT8) && len < 8)
1286 return false;
1287 if ((ops->flags & WIIMOD_FLAG_EXT16) && len < 16)
1288 return false;
1289
1290 return true;
1291 }
1292
1293 static void handler_ext(struct wiimote_data *wdata, const __u8 *payload,
1294 size_t len)
1295 {
1296 static const __u8 invalid[21] = { 0xff, 0xff, 0xff, 0xff,
1297 0xff, 0xff, 0xff, 0xff,
1298 0xff, 0xff, 0xff, 0xff,
1299 0xff, 0xff, 0xff, 0xff,
1300 0xff, 0xff, 0xff, 0xff,
1301 0xff };
1302 const __u8 *iter, *mods;
1303 const struct wiimod_ops *ops;
1304 bool is_mp;
1305
1306 if (len > 21)
1307 len = 21;
1308 if (len < 6 || !memcmp(payload, invalid, len))
1309 return;
1310
1311 /* if MP is active, track MP slot hotplugging */
1312 if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1313 /* this bit is set for invalid events (eg. during hotplug) */
1314 if (payload[5] & 0x01)
1315 return;
1316
1317 if (payload[4] & 0x01) {
1318 if (!(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED)) {
1319 hid_dbg(wdata->hdev, "MP hotplug: 1\n");
1320 wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED;
1321 __wiimote_schedule(wdata);
1322 }
1323 } else {
1324 if (wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED) {
1325 hid_dbg(wdata->hdev, "MP hotplug: 0\n");
1326 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1327 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1328 __wiimote_schedule(wdata);
1329 }
1330 }
1331
1332 /* detect MP data that is sent interleaved with EXT data */
1333 is_mp = payload[5] & 0x02;
1334 } else {
1335 is_mp = false;
1336 }
1337
1338 /* ignore EXT events if no extension is active */
1339 if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE) && !is_mp)
1340 return;
1341
1342 /* try forwarding to extension handler, first */
1343 ops = wiimod_ext_table[wdata->state.exttype];
1344 if (is_mp && ops->in_mp) {
1345 ops->in_mp(wdata, payload);
1346 return;
1347 } else if (!is_mp && valid_ext_handler(ops, len)) {
1348 ops->in_ext(wdata, payload);
1349 return;
1350 }
1351
1352 /* try forwarding to MP handler */
1353 ops = &wiimod_mp;
1354 if (is_mp && ops->in_mp) {
1355 ops->in_mp(wdata, payload);
1356 return;
1357 } else if (!is_mp && valid_ext_handler(ops, len)) {
1358 ops->in_ext(wdata, payload);
1359 return;
1360 }
1361
1362 /* try forwarding to loaded modules */
1363 mods = wiimote_devtype_mods[wdata->state.devtype];
1364 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1365 ops = wiimod_table[*iter];
1366 if (is_mp && ops->in_mp) {
1367 ops->in_mp(wdata, payload);
1368 return;
1369 } else if (!is_mp && valid_ext_handler(ops, len)) {
1370 ops->in_ext(wdata, payload);
1371 return;
1372 }
1373 }
1374 }
1375
1376 #define ir_to_input0(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 0)
1377 #define ir_to_input1(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 1)
1378 #define ir_to_input2(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 2)
1379 #define ir_to_input3(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 3)
1380
1381 static void handler_ir(struct wiimote_data *wdata, const __u8 *payload,
1382 bool packed, unsigned int id)
1383 {
1384 const __u8 *iter, *mods;
1385 const struct wiimod_ops *ops;
1386
1387 ops = wiimod_ext_table[wdata->state.exttype];
1388 if (ops->in_ir) {
1389 ops->in_ir(wdata, payload, packed, id);
1390 return;
1391 }
1392
1393 mods = wiimote_devtype_mods[wdata->state.devtype];
1394 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1395 ops = wiimod_table[*iter];
1396 if (ops->in_ir) {
1397 ops->in_ir(wdata, payload, packed, id);
1398 break;
1399 }
1400 }
1401 }
1402
1403 /* reduced status report with "BB BB" key data only */
1404 static void handler_status_K(struct wiimote_data *wdata,
1405 const __u8 *payload)
1406 {
1407 handler_keys(wdata, payload);
1408
1409 /* on status reports the drm is reset so we need to resend the drm */
1410 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
1411 }
1412
1413 /* extended status report with "BB BB LF 00 00 VV" data */
1414 static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
1415 {
1416 handler_status_K(wdata, payload);
1417
1418 /* update extension status */
1419 if (payload[2] & 0x02) {
1420 if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED)) {
1421 hid_dbg(wdata->hdev, "EXT hotplug: 1\n");
1422 wdata->state.flags |= WIIPROTO_FLAG_EXT_PLUGGED;
1423 __wiimote_schedule(wdata);
1424 }
1425 } else {
1426 if (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED) {
1427 hid_dbg(wdata->hdev, "EXT hotplug: 0\n");
1428 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1429 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1430 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1431 wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE;
1432 __wiimote_schedule(wdata);
1433 }
1434 }
1435
1436 wdata->state.cmd_battery = payload[5];
1437 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0))
1438 wiimote_cmd_complete(wdata);
1439 }
1440
1441 /* reduced generic report with "BB BB" key data only */
1442 static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload)
1443 {
1444 handler_keys(wdata, payload);
1445 }
1446
1447 static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
1448 {
1449 __u16 offset = payload[3] << 8 | payload[4];
1450 __u8 size = (payload[2] >> 4) + 1;
1451 __u8 err = payload[2] & 0x0f;
1452
1453 handler_keys(wdata, payload);
1454
1455 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
1456 if (err)
1457 size = 0;
1458 else if (size > wdata->state.cmd_read_size)
1459 size = wdata->state.cmd_read_size;
1460
1461 wdata->state.cmd_read_size = size;
1462 if (wdata->state.cmd_read_buf)
1463 memcpy(wdata->state.cmd_read_buf, &payload[5], size);
1464 wiimote_cmd_complete(wdata);
1465 }
1466 }
1467
1468 static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
1469 {
1470 __u8 err = payload[3];
1471 __u8 cmd = payload[2];
1472
1473 handler_keys(wdata, payload);
1474
1475 if (wiimote_cmd_pending(wdata, cmd, 0)) {
1476 wdata->state.cmd_err = err;
1477 wiimote_cmd_complete(wdata);
1478 } else if (err) {
1479 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
1480 cmd);
1481 }
1482 }
1483
1484 static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
1485 {
1486 handler_keys(wdata, payload);
1487 handler_accel(wdata, payload);
1488 }
1489
1490 static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
1491 {
1492 handler_keys(wdata, payload);
1493 handler_ext(wdata, &payload[2], 8);
1494 }
1495
1496 static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
1497 {
1498 handler_keys(wdata, payload);
1499 handler_accel(wdata, payload);
1500 ir_to_input0(wdata, &payload[5], false);
1501 ir_to_input1(wdata, &payload[8], false);
1502 ir_to_input2(wdata, &payload[11], false);
1503 ir_to_input3(wdata, &payload[14], false);
1504 }
1505
1506 static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
1507 {
1508 handler_keys(wdata, payload);
1509 handler_ext(wdata, &payload[2], 19);
1510 }
1511
1512 static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
1513 {
1514 handler_keys(wdata, payload);
1515 ir_to_input0(wdata, &payload[2], false);
1516 ir_to_input1(wdata, &payload[4], true);
1517 ir_to_input2(wdata, &payload[7], false);
1518 ir_to_input3(wdata, &payload[9], true);
1519 handler_ext(wdata, &payload[12], 9);
1520 }
1521
1522 static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
1523 {
1524 handler_keys(wdata, payload);
1525 handler_accel(wdata, payload);
1526 handler_ext(wdata, &payload[5], 16);
1527 }
1528
1529 static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
1530 {
1531 handler_keys(wdata, payload);
1532 handler_accel(wdata, payload);
1533 ir_to_input0(wdata, &payload[5], false);
1534 ir_to_input1(wdata, &payload[7], true);
1535 ir_to_input2(wdata, &payload[10], false);
1536 ir_to_input3(wdata, &payload[12], true);
1537 handler_ext(wdata, &payload[15], 6);
1538 }
1539
1540 static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
1541 {
1542 handler_ext(wdata, payload, 21);
1543 }
1544
1545 static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
1546 {
1547 handler_keys(wdata, payload);
1548
1549 wdata->state.accel_split[0] = payload[2];
1550 wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
1551 wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
1552
1553 ir_to_input0(wdata, &payload[3], false);
1554 ir_to_input1(wdata, &payload[12], false);
1555 }
1556
1557 static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
1558 {
1559 __u8 buf[5];
1560
1561 handler_keys(wdata, payload);
1562
1563 wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
1564 wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
1565
1566 buf[0] = 0;
1567 buf[1] = 0;
1568 buf[2] = wdata->state.accel_split[0];
1569 buf[3] = payload[2];
1570 buf[4] = wdata->state.accel_split[1];
1571 handler_accel(wdata, buf);
1572
1573 ir_to_input2(wdata, &payload[3], false);
1574 ir_to_input3(wdata, &payload[12], false);
1575 }
1576
1577 struct wiiproto_handler {
1578 __u8 id;
1579 size_t size;
1580 void (*func)(struct wiimote_data *wdata, const __u8 *payload);
1581 };
1582
1583 static struct wiiproto_handler handlers[] = {
1584 { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
1585 { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K },
1586 { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
1587 { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K },
1588 { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
1589 { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K },
1590 { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
1591 { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
1592 { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K },
1593 { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
1594 { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K },
1595 { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
1596 { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K },
1597 { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
1598 { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K },
1599 { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
1600 { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K },
1601 { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
1602 { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K },
1603 { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
1604 { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K },
1605 { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
1606 { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
1607 { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
1608 { .id = 0 }
1609 };
1610
1611 static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
1612 u8 *raw_data, int size)
1613 {
1614 struct wiimote_data *wdata = hid_get_drvdata(hdev);
1615 struct wiiproto_handler *h;
1616 int i;
1617 unsigned long flags;
1618
1619 if (size < 1)
1620 return -EINVAL;
1621
1622 spin_lock_irqsave(&wdata->state.lock, flags);
1623
1624 for (i = 0; handlers[i].id; ++i) {
1625 h = &handlers[i];
1626 if (h->id == raw_data[0] && h->size < size) {
1627 h->func(wdata, &raw_data[1]);
1628 break;
1629 }
1630 }
1631
1632 if (!handlers[i].id)
1633 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
1634 size);
1635
1636 spin_unlock_irqrestore(&wdata->state.lock, flags);
1637
1638 return 0;
1639 }
1640
1641 static ssize_t wiimote_ext_show(struct device *dev,
1642 struct device_attribute *attr,
1643 char *buf)
1644 {
1645 struct wiimote_data *wdata = dev_to_wii(dev);
1646 __u8 type;
1647 unsigned long flags;
1648
1649 spin_lock_irqsave(&wdata->state.lock, flags);
1650 type = wdata->state.exttype;
1651 spin_unlock_irqrestore(&wdata->state.lock, flags);
1652
1653 switch (type) {
1654 case WIIMOTE_EXT_NONE:
1655 return sprintf(buf, "none\n");
1656 case WIIMOTE_EXT_NUNCHUK:
1657 return sprintf(buf, "nunchuk\n");
1658 case WIIMOTE_EXT_CLASSIC_CONTROLLER:
1659 return sprintf(buf, "classic\n");
1660 case WIIMOTE_EXT_BALANCE_BOARD:
1661 return sprintf(buf, "balanceboard\n");
1662 case WIIMOTE_EXT_PRO_CONTROLLER:
1663 return sprintf(buf, "procontroller\n");
1664 case WIIMOTE_EXT_UNKNOWN:
1665 /* fallthrough */
1666 default:
1667 return sprintf(buf, "unknown\n");
1668 }
1669 }
1670
1671 static ssize_t wiimote_ext_store(struct device *dev,
1672 struct device_attribute *attr,
1673 const char *buf, size_t count)
1674 {
1675 struct wiimote_data *wdata = dev_to_wii(dev);
1676
1677 if (!strcmp(buf, "scan")) {
1678 wiimote_schedule(wdata);
1679 } else {
1680 return -EINVAL;
1681 }
1682
1683 return strnlen(buf, PAGE_SIZE);
1684 }
1685
1686 static DEVICE_ATTR(extension, S_IRUGO | S_IWUSR | S_IWGRP, wiimote_ext_show,
1687 wiimote_ext_store);
1688
1689 static ssize_t wiimote_dev_show(struct device *dev,
1690 struct device_attribute *attr,
1691 char *buf)
1692 {
1693 struct wiimote_data *wdata = dev_to_wii(dev);
1694 __u8 type;
1695 unsigned long flags;
1696
1697 spin_lock_irqsave(&wdata->state.lock, flags);
1698 type = wdata->state.devtype;
1699 spin_unlock_irqrestore(&wdata->state.lock, flags);
1700
1701 switch (type) {
1702 case WIIMOTE_DEV_GENERIC:
1703 return sprintf(buf, "generic\n");
1704 case WIIMOTE_DEV_GEN10:
1705 return sprintf(buf, "gen10\n");
1706 case WIIMOTE_DEV_GEN20:
1707 return sprintf(buf, "gen20\n");
1708 case WIIMOTE_DEV_BALANCE_BOARD:
1709 return sprintf(buf, "balanceboard\n");
1710 case WIIMOTE_DEV_PRO_CONTROLLER:
1711 return sprintf(buf, "procontroller\n");
1712 case WIIMOTE_DEV_PENDING:
1713 return sprintf(buf, "pending\n");
1714 case WIIMOTE_DEV_UNKNOWN:
1715 /* fallthrough */
1716 default:
1717 return sprintf(buf, "unknown\n");
1718 }
1719 }
1720
1721 static DEVICE_ATTR(devtype, S_IRUGO, wiimote_dev_show, NULL);
1722
1723 static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1724 {
1725 struct wiimote_data *wdata;
1726
1727 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1728 if (!wdata)
1729 return NULL;
1730
1731 wdata->hdev = hdev;
1732 hid_set_drvdata(hdev, wdata);
1733
1734 spin_lock_init(&wdata->queue.lock);
1735 INIT_WORK(&wdata->queue.worker, wiimote_queue_worker);
1736
1737 spin_lock_init(&wdata->state.lock);
1738 init_completion(&wdata->state.ready);
1739 mutex_init(&wdata->state.sync);
1740 wdata->state.drm = WIIPROTO_REQ_DRM_K;
1741 wdata->state.cmd_battery = 0xff;
1742
1743 INIT_WORK(&wdata->init_worker, wiimote_init_worker);
1744 setup_timer(&wdata->timer, wiimote_init_timeout, (long)wdata);
1745
1746 return wdata;
1747 }
1748
1749 static void wiimote_destroy(struct wiimote_data *wdata)
1750 {
1751 unsigned long flags;
1752
1753 wiidebug_deinit(wdata);
1754
1755 /* prevent init_worker from being scheduled again */
1756 spin_lock_irqsave(&wdata->state.lock, flags);
1757 wdata->state.flags |= WIIPROTO_FLAG_EXITING;
1758 spin_unlock_irqrestore(&wdata->state.lock, flags);
1759
1760 cancel_work_sync(&wdata->init_worker);
1761 del_timer_sync(&wdata->timer);
1762
1763 device_remove_file(&wdata->hdev->dev, &dev_attr_devtype);
1764 device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
1765
1766 wiimote_mp_unload(wdata);
1767 wiimote_ext_unload(wdata);
1768 wiimote_modules_unload(wdata);
1769 cancel_work_sync(&wdata->queue.worker);
1770 hid_hw_close(wdata->hdev);
1771 hid_hw_stop(wdata->hdev);
1772
1773 kfree(wdata);
1774 }
1775
1776 static int wiimote_hid_probe(struct hid_device *hdev,
1777 const struct hid_device_id *id)
1778 {
1779 struct wiimote_data *wdata;
1780 int ret;
1781
1782 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1783
1784 wdata = wiimote_create(hdev);
1785 if (!wdata) {
1786 hid_err(hdev, "Can't alloc device\n");
1787 return -ENOMEM;
1788 }
1789
1790 ret = hid_parse(hdev);
1791 if (ret) {
1792 hid_err(hdev, "HID parse failed\n");
1793 goto err;
1794 }
1795
1796 ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1797 if (ret) {
1798 hid_err(hdev, "HW start failed\n");
1799 goto err;
1800 }
1801
1802 ret = hid_hw_open(hdev);
1803 if (ret) {
1804 hid_err(hdev, "cannot start hardware I/O\n");
1805 goto err_stop;
1806 }
1807
1808 ret = device_create_file(&hdev->dev, &dev_attr_extension);
1809 if (ret) {
1810 hid_err(hdev, "cannot create sysfs attribute\n");
1811 goto err_close;
1812 }
1813
1814 ret = device_create_file(&hdev->dev, &dev_attr_devtype);
1815 if (ret) {
1816 hid_err(hdev, "cannot create sysfs attribute\n");
1817 goto err_ext;
1818 }
1819
1820 ret = wiidebug_init(wdata);
1821 if (ret)
1822 goto err_free;
1823
1824 hid_info(hdev, "New device registered\n");
1825
1826 /* schedule device detection */
1827 wiimote_schedule(wdata);
1828
1829 return 0;
1830
1831 err_free:
1832 wiimote_destroy(wdata);
1833 return ret;
1834
1835 err_ext:
1836 device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
1837 err_close:
1838 hid_hw_close(hdev);
1839 err_stop:
1840 hid_hw_stop(hdev);
1841 err:
1842 input_free_device(wdata->ir);
1843 input_free_device(wdata->accel);
1844 kfree(wdata);
1845 return ret;
1846 }
1847
1848 static void wiimote_hid_remove(struct hid_device *hdev)
1849 {
1850 struct wiimote_data *wdata = hid_get_drvdata(hdev);
1851
1852 hid_info(hdev, "Device removed\n");
1853 wiimote_destroy(wdata);
1854 }
1855
1856 static const struct hid_device_id wiimote_hid_devices[] = {
1857 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1858 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1859 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO2,
1860 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1861 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1862 USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
1863 { }
1864 };
1865 MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1866
1867 static struct hid_driver wiimote_hid_driver = {
1868 .name = "wiimote",
1869 .id_table = wiimote_hid_devices,
1870 .probe = wiimote_hid_probe,
1871 .remove = wiimote_hid_remove,
1872 .raw_event = wiimote_hid_event,
1873 };
1874 module_hid_driver(wiimote_hid_driver);
1875
1876 MODULE_LICENSE("GPL");
1877 MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1878 MODULE_DESCRIPTION("Driver for Nintendo Wii / Wii U peripherals");
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