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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
[linux-2.6-block.git] / drivers / hid / hid-wiimote-core.c
CommitLineData
fb51b443 1/*
92eda7e4
DH		 2 * HID driver for Nintendo Wii / Wii U peripherals
3 * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
fb51b443
DH		 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
29d28064 13#include <linux/completion.h>
672bc4e0 14#include <linux/device.h>
02fb72a0 15#include <linux/hid.h>
672bc4e0 16#include <linux/input.h>
fb51b443 17#include <linux/module.h>
29d28064 18#include <linux/mutex.h>
23c063cb 19#include <linux/spinlock.h>
02fb72a0 20#include "hid-ids.h"
7e274400 21#include "hid-wiimote.h"
fb51b443 22
13938538
DH		 23/* output queue handling */
24
d758b1f0
DH		 25static int wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
26 size_t count)
0c218f14
DH		 27{
28 __u8 *buf;
d758b1f0 29 int ret;
0c218f14 30
7e0bc880 31 if (!hdev->ll_driver->output_report)
0c218f14
DH		 32 return -ENODEV;
33
34 buf = kmemdup(buffer, count, GFP_KERNEL);
35 if (!buf)
36 return -ENOMEM;
37
7e0bc880 38 ret = hid_hw_output_report(hdev, buf, count);
0c218f14
DH		 39
40 kfree(buf);
41 return ret;
42}
43
13938538 44static void wiimote_queue_worker(struct work_struct *work)
23c063cb 45{
13938538
DH		 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);
23c063cb 50 unsigned long flags;
d758b1f0 51 int ret;
23c063cb 52
13938538 53 spin_lock_irqsave(&wdata->queue.lock, flags);
23c063cb 54
13938538
DH		 55 while (wdata->queue.head != wdata->queue.tail) {
56 spin_unlock_irqrestore(&wdata->queue.lock, flags);
d758b1f0 57 ret = wiimote_hid_send(wdata->hdev,
13938538
DH		 58 wdata->queue.outq[wdata->queue.tail].data,
59 wdata->queue.outq[wdata->queue.tail].size);
d758b1f0
DH		 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 }
13938538 65 spin_lock_irqsave(&wdata->queue.lock, flags);
23c063cb 66
13938538 67 wdata->queue.tail = (wdata->queue.tail + 1) % WIIMOTE_BUFSIZE;
23c063cb
DH		 68 }
69
13938538 70 spin_unlock_irqrestore(&wdata->queue.lock, flags);
23c063cb
DH		 71}
72
73static 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");
d758b1f0
DH		 81
82 spin_lock_irqsave(&wdata->queue.lock, flags);
83 goto out_error;
23c063cb
DH		 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
13938538 96 spin_lock_irqsave(&wdata->queue.lock, flags);
23c063cb 97
13938538
DH		 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;
23c063cb 101
13938538
DH		 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;
23c063cb
DH		 107 } else {
108 hid_warn(wdata->hdev, "Output queue is full");
d758b1f0 109 goto out_error;
23c063cb
DH		 110 }
111
d758b1f0
DH		 112 goto out_unlock;
113
114out_error:
115 wiimote_cmd_abort(wdata);
116out_unlock:
13938538 117 spin_unlock_irqrestore(&wdata->queue.lock, flags);
23c063cb
DH		 118}
119
c003ec21
DH		 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 */
127static 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
20cef813 133void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
c003ec21
DH		 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
6c5ae018 153void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
db308346
DH		 154{
155 __u8 cmd[2];
156
32a0d9a5
DH		 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
db308346
DH		 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
c003ec21 174 wiiproto_keep_rumble(wdata, &cmd[1]);
db308346
DH		 175 wiimote_queue(wdata, cmd, sizeof(cmd));
176}
177
2cb5e4bc
DH		 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.
4148b6bf
DH		 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.
2cb5e4bc
DH		 196 */
197static __u8 select_drm(struct wiimote_data *wdata)
198{
f363e4f6 199 __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
4148b6bf
DH		 200 bool ext;
201
202 ext = (wdata->state.flags & WIIPROTO_FLAG_EXT_USED) ||
203 (wdata->state.flags & WIIPROTO_FLAG_MP_USED);
f363e4f6 204
f1d4bed4
DH		 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
f363e4f6 213 if (ir == WIIPROTO_FLAG_IR_BASIC) {
4148b6bf 214 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
a6be8569
DH		 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;
4148b6bf 221 } else {
f363e4f6 222 return WIIPROTO_REQ_DRM_KIE;
4148b6bf 223 }
f363e4f6
DH		 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 {
cb99221b
DH		 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)
4148b6bf 236 return WIIPROTO_REQ_DRM_KEE;
cb99221b
DH		 237 else
238 return WIIPROTO_REQ_DRM_K;
239 }
f363e4f6 240 }
2cb5e4bc
DH		 241}
242
7e274400 243void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
2cb5e4bc
DH		 244{
245 __u8 cmd[3];
246
d76f89e1
DH		 247 if (wdata->state.flags & WIIPROTO_FLAG_DRM_LOCKED)
248 drm = wdata->state.drm;
249 else if (drm == WIIPROTO_REQ_NULL)
2cb5e4bc
DH		 250 drm = select_drm(wdata);
251
252 cmd[0] = WIIPROTO_REQ_DRM;
253 cmd[1] = 0;
254 cmd[2] = drm;
255
43d782ae 256 wdata->state.drm = drm;
c003ec21 257 wiiproto_keep_rumble(wdata, &cmd[1]);
2cb5e4bc
DH		 258 wiimote_queue(wdata, cmd, sizeof(cmd));
259}
260
dcf39231 261void wiiproto_req_status(struct wiimote_data *wdata)
e3979a91
DH		 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
0ea16757 272void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
98a558ae
DH		 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
3b5f03c4 286void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
fc221cda
DH		 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
3b5f03c4 297void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
fc221cda
DH		 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
be1ecd62
DH		 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
314static 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
1d3452c6
DH		 339void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
340 __u16 size)
fad8c0e3
DH		 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
33e84013 364/* requries the cmd-mutex to be held */
7e274400 365int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
33e84013
DH		 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
fad8c0e3
DH		 383/* requries the cmd-mutex to be held */
384ssize_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
c57ff761
DH		 413/* requires the cmd-mutex to be held */
414static 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 */
4148b6bf 435static __u8 wiimote_cmd_read_ext(struct wiimote_data *wdata, __u8 *rmem)
c57ff761 436{
c57ff761
DH		 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
95f71266 444 hid_dbg(wdata->hdev, "extension ID: %6phC\n", rmem);
4148b6bf 445
c57ff761
DH		 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
b6ee67b3
DH		 450 if (rmem[4] == 0x00 && rmem[5] == 0x00)
451 return WIIMOTE_EXT_NUNCHUK;
9d6f9ecb
DH		 452 if (rmem[4] == 0x01 && rmem[5] == 0x01)
453 return WIIMOTE_EXT_CLASSIC_CONTROLLER;
f1d4bed4
DH		 454 if (rmem[4] == 0x04 && rmem[5] == 0x02)
455 return WIIMOTE_EXT_BALANCE_BOARD;
b8e0fe31
DH		 456 if (rmem[4] == 0x01 && rmem[5] == 0x20)
457 return WIIMOTE_EXT_PRO_CONTROLLER;
d4bdf2d2
NAL		 458 if (rmem[0] == 0x01 && rmem[1] == 0x00 &&
459 rmem[4] == 0x01 && rmem[5] == 0x03)
460 return WIIMOTE_EXT_DRUMS;
461 if (rmem[0] == 0x00 && rmem[1] == 0x00 &&
462 rmem[4] == 0x01 && rmem[5] == 0x03)
463 return WIIMOTE_EXT_GUITAR;
f1d4bed4 464
c57ff761
DH		 465 return WIIMOTE_EXT_UNKNOWN;
466}
467
4148b6bf
DH		 468/* requires the cmd-mutex to be held */
469static int wiimote_cmd_init_mp(struct wiimote_data *wdata)
470{
471 __u8 wmem;
472 int ret;
473
474 /* initialize MP */
475 wmem = 0x55;
476 ret = wiimote_cmd_write(wdata, 0xa600f0, &wmem, sizeof(wmem));
477 if (ret)
478 return ret;
479
480 /* disable default encryption */
481 wmem = 0x0;
482 ret = wiimote_cmd_write(wdata, 0xa600fb, &wmem, sizeof(wmem));
483 if (ret)
484 return ret;
485
486 return 0;
487}
488
489/* requires the cmd-mutex to be held */
490static bool wiimote_cmd_map_mp(struct wiimote_data *wdata, __u8 exttype)
491{
492 __u8 wmem;
493
494 /* map MP with correct pass-through mode */
495 switch (exttype) {
9d6f9ecb 496 case WIIMOTE_EXT_CLASSIC_CONTROLLER:
d4bdf2d2
NAL		 497 case WIIMOTE_EXT_DRUMS:
498 case WIIMOTE_EXT_GUITAR:
9d6f9ecb
DH		 499 wmem = 0x07;
500 break;
b6ee67b3
DH		 501 case WIIMOTE_EXT_NUNCHUK:
502 wmem = 0x05;
503 break;
4148b6bf
DH		 504 default:
505 wmem = 0x04;
506 break;
507 }
508
509 return wiimote_cmd_write(wdata, 0xa600fe, &wmem, sizeof(wmem));
510}
511
512/* requires the cmd-mutex to be held */
513static bool wiimote_cmd_read_mp(struct wiimote_data *wdata, __u8 *rmem)
514{
515 int ret;
516
517 /* read motion plus ID */
518 ret = wiimote_cmd_read(wdata, 0xa600fa, rmem, 6);
519 if (ret != 6)
520 return false;
521
95f71266 522 hid_dbg(wdata->hdev, "motion plus ID: %6phC\n", rmem);
4148b6bf
DH		 523
524 if (rmem[5] == 0x05)
525 return true;
526
95f71266 527 hid_info(wdata->hdev, "unknown motion plus ID: %6phC\n", rmem);
4148b6bf
DH		 528
529 return false;
530}
531
532/* requires the cmd-mutex to be held */
533static __u8 wiimote_cmd_read_mp_mapped(struct wiimote_data *wdata)
534{
535 int ret;
536 __u8 rmem[6];
537
538 /* read motion plus ID */
539 ret = wiimote_cmd_read(wdata, 0xa400fa, rmem, 6);
540 if (ret != 6)
541 return WIIMOTE_MP_NONE;
542
95f71266 543 hid_dbg(wdata->hdev, "mapped motion plus ID: %6phC\n", rmem);
4148b6bf
DH		 544
545 if (rmem[0] == 0xff && rmem[1] == 0xff && rmem[2] == 0xff &&
546 rmem[3] == 0xff && rmem[4] == 0xff && rmem[5] == 0xff)
547 return WIIMOTE_MP_NONE;
548
549 if (rmem[4] == 0x04 && rmem[5] == 0x05)
550 return WIIMOTE_MP_SINGLE;
551 else if (rmem[4] == 0x05 && rmem[5] == 0x05)
552 return WIIMOTE_MP_PASSTHROUGH_NUNCHUK;
553 else if (rmem[4] == 0x07 && rmem[5] == 0x05)
554 return WIIMOTE_MP_PASSTHROUGH_CLASSIC;
555
556 return WIIMOTE_MP_UNKNOWN;
557}
558
27f06942
DH		 559/* device module handling */
560
561static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = {
562 [WIIMOTE_DEV_PENDING] = (const __u8[]){
563 WIIMOD_NULL,
564 },
565 [WIIMOTE_DEV_UNKNOWN] = (const __u8[]){
9f329741 566 WIIMOD_NO_MP,
27f06942
DH		 567 WIIMOD_NULL,
568 },
569 [WIIMOTE_DEV_GENERIC] = (const __u8[]){
20cef813
DH		 570 WIIMOD_KEYS,
571 WIIMOD_RUMBLE,
dcf39231 572 WIIMOD_BATTERY,
6c5ae018
DH		 573 WIIMOD_LED1,
574 WIIMOD_LED2,
575 WIIMOD_LED3,
576 WIIMOD_LED4,
0ea16757 577 WIIMOD_ACCEL,
3b5f03c4 578 WIIMOD_IR,
27f06942
DH		 579 WIIMOD_NULL,
580 },
581 [WIIMOTE_DEV_GEN10] = (const __u8[]){
20cef813
DH		 582 WIIMOD_KEYS,
583 WIIMOD_RUMBLE,
dcf39231 584 WIIMOD_BATTERY,
6c5ae018
DH		 585 WIIMOD_LED1,
586 WIIMOD_LED2,
587 WIIMOD_LED3,
588 WIIMOD_LED4,
0ea16757 589 WIIMOD_ACCEL,
3b5f03c4 590 WIIMOD_IR,
27f06942
DH		 591 WIIMOD_NULL,
592 },
593 [WIIMOTE_DEV_GEN20] = (const __u8[]){
20cef813
DH		 594 WIIMOD_KEYS,
595 WIIMOD_RUMBLE,
dcf39231 596 WIIMOD_BATTERY,
6c5ae018
DH		 597 WIIMOD_LED1,
598 WIIMOD_LED2,
599 WIIMOD_LED3,
600 WIIMOD_LED4,
0ea16757 601 WIIMOD_ACCEL,
3b5f03c4 602 WIIMOD_IR,
9f329741 603 WIIMOD_BUILTIN_MP,
27f06942
DH		 604 WIIMOD_NULL,
605 },
f1d4bed4
DH		 606 [WIIMOTE_DEV_BALANCE_BOARD] = (const __u8[]) {
607 WIIMOD_BATTERY,
608 WIIMOD_LED1,
9f329741 609 WIIMOD_NO_MP,
f1d4bed4
DH		 610 WIIMOD_NULL,
611 },
b8e0fe31
DH		 612 [WIIMOTE_DEV_PRO_CONTROLLER] = (const __u8[]) {
613 WIIMOD_BATTERY,
614 WIIMOD_LED1,
615 WIIMOD_LED2,
616 WIIMOD_LED3,
617 WIIMOD_LED4,
618 WIIMOD_NO_MP,
619 WIIMOD_NULL,
620 },
27f06942
DH		 621};
622
623static void wiimote_modules_load(struct wiimote_data *wdata,
624 unsigned int devtype)
625{
626 bool need_input = false;
627 const __u8 *mods, *iter;
628 const struct wiimod_ops *ops;
629 int ret;
630
631 mods = wiimote_devtype_mods[devtype];
632
633 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
634 if (wiimod_table[*iter]->flags & WIIMOD_FLAG_INPUT) {
635 need_input = true;
636 break;
637 }
638 }
639
640 if (need_input) {
641 wdata->input = input_allocate_device();
642 if (!wdata->input)
643 return;
644
645 input_set_drvdata(wdata->input, wdata);
646 wdata->input->dev.parent = &wdata->hdev->dev;
647 wdata->input->id.bustype = wdata->hdev->bus;
648 wdata->input->id.vendor = wdata->hdev->vendor;
649 wdata->input->id.product = wdata->hdev->product;
650 wdata->input->id.version = wdata->hdev->version;
651 wdata->input->name = WIIMOTE_NAME;
652 }
653
654 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
655 ops = wiimod_table[*iter];
656 if (!ops->probe)
657 continue;
658
659 ret = ops->probe(ops, wdata);
660 if (ret)
661 goto error;
662 }
663
664 if (wdata->input) {
665 ret = input_register_device(wdata->input);
666 if (ret)
667 goto error;
668 }
669
670 spin_lock_irq(&wdata->state.lock);
671 wdata->state.devtype = devtype;
672 spin_unlock_irq(&wdata->state.lock);
673 return;
674
675error:
676 for ( ; iter-- != mods; ) {
677 ops = wiimod_table[*iter];
678 if (ops->remove)
679 ops->remove(ops, wdata);
680 }
681
682 if (wdata->input) {
683 input_free_device(wdata->input);
684 wdata->input = NULL;
685 }
686}
687
688static void wiimote_modules_unload(struct wiimote_data *wdata)
689{
690 const __u8 *mods, *iter;
691 const struct wiimod_ops *ops;
692 unsigned long flags;
693
694 mods = wiimote_devtype_mods[wdata->state.devtype];
695
696 spin_lock_irqsave(&wdata->state.lock, flags);
697 wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
698 spin_unlock_irqrestore(&wdata->state.lock, flags);
699
700 /* find end of list */
701 for (iter = mods; *iter != WIIMOD_NULL; ++iter)
702 /* empty */ ;
703
704 if (wdata->input) {
705 input_get_device(wdata->input);
706 input_unregister_device(wdata->input);
707 }
708
709 for ( ; iter-- != mods; ) {
710 ops = wiimod_table[*iter];
711 if (ops->remove)
712 ops->remove(ops, wdata);
713 }
714
715 if (wdata->input) {
716 input_put_device(wdata->input);
717 wdata->input = NULL;
718 }
719}
720
4148b6bf
DH		 721/* device extension handling */
722
723static void wiimote_ext_load(struct wiimote_data *wdata, unsigned int ext)
724{
725 unsigned long flags;
726 const struct wiimod_ops *ops;
727 int ret;
728
729 ops = wiimod_ext_table[ext];
730
731 if (ops->probe) {
732 ret = ops->probe(ops, wdata);
733 if (ret)
734 ext = WIIMOTE_EXT_UNKNOWN;
735 }
736
737 spin_lock_irqsave(&wdata->state.lock, flags);
738 wdata->state.exttype = ext;
739 spin_unlock_irqrestore(&wdata->state.lock, flags);
740}
741
742static void wiimote_ext_unload(struct wiimote_data *wdata)
743{
744 unsigned long flags;
745 const struct wiimod_ops *ops;
746
747 ops = wiimod_ext_table[wdata->state.exttype];
748
749 spin_lock_irqsave(&wdata->state.lock, flags);
750 wdata->state.exttype = WIIMOTE_EXT_UNKNOWN;
751 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
752 spin_unlock_irqrestore(&wdata->state.lock, flags);
753
754 if (ops->remove)
755 ops->remove(ops, wdata);
756}
757
758static void wiimote_mp_load(struct wiimote_data *wdata)
759{
760 unsigned long flags;
761 const struct wiimod_ops *ops;
762 int ret;
763 __u8 mode = 2;
764
765 ops = &wiimod_mp;
766 if (ops->probe) {
767 ret = ops->probe(ops, wdata);
768 if (ret)
769 mode = 1;
770 }
771
772 spin_lock_irqsave(&wdata->state.lock, flags);
773 wdata->state.mp = mode;
774 spin_unlock_irqrestore(&wdata->state.lock, flags);
775}
776
777static void wiimote_mp_unload(struct wiimote_data *wdata)
778{
779 unsigned long flags;
780 const struct wiimod_ops *ops;
781
782 if (wdata->state.mp < 2)
783 return;
784
785 ops = &wiimod_mp;
786
787 spin_lock_irqsave(&wdata->state.lock, flags);
788 wdata->state.mp = 0;
789 wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
790 spin_unlock_irqrestore(&wdata->state.lock, flags);
791
792 if (ops->remove)
793 ops->remove(ops, wdata);
794}
795
c57ff761
DH		 796/* device (re-)initialization and detection */
797
798static const char *wiimote_devtype_names[WIIMOTE_DEV_NUM] = {
799 [WIIMOTE_DEV_PENDING] = "Pending",
800 [WIIMOTE_DEV_UNKNOWN] = "Unknown",
801 [WIIMOTE_DEV_GENERIC] = "Generic",
802 [WIIMOTE_DEV_GEN10] = "Nintendo Wii Remote (Gen 1)",
803 [WIIMOTE_DEV_GEN20] = "Nintendo Wii Remote Plus (Gen 2)",
f1d4bed4 804 [WIIMOTE_DEV_BALANCE_BOARD] = "Nintendo Wii Balance Board",
b8e0fe31 805 [WIIMOTE_DEV_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller",
c57ff761
DH		 806};
807
808/* Try to guess the device type based on all collected information. We
809 * first try to detect by static extension types, then VID/PID and the
810 * device name. If we cannot detect the device, we use
811 * WIIMOTE_DEV_GENERIC so all modules will get probed on the device. */
812static void wiimote_init_set_type(struct wiimote_data *wdata,
813 __u8 exttype)
814{
815 __u8 devtype = WIIMOTE_DEV_GENERIC;
816 __u16 vendor, product;
817 const char *name;
818
819 vendor = wdata->hdev->vendor;
820 product = wdata->hdev->product;
821 name = wdata->hdev->name;
822
f1d4bed4
DH		 823 if (exttype == WIIMOTE_EXT_BALANCE_BOARD) {
824 devtype = WIIMOTE_DEV_BALANCE_BOARD;
825 goto done;
b8e0fe31
DH		 826 } else if (exttype == WIIMOTE_EXT_PRO_CONTROLLER) {
827 devtype = WIIMOTE_DEV_PRO_CONTROLLER;
828 goto done;
f1d4bed4
DH		 829 }
830
c57ff761
DH		 831 if (!strcmp(name, "Nintendo RVL-CNT-01")) {
832 devtype = WIIMOTE_DEV_GEN10;
833 goto done;
834 } else if (!strcmp(name, "Nintendo RVL-CNT-01-TR")) {
835 devtype = WIIMOTE_DEV_GEN20;
836 goto done;
f1d4bed4
DH		 837 } else if (!strcmp(name, "Nintendo RVL-WBC-01")) {
838 devtype = WIIMOTE_DEV_BALANCE_BOARD;
839 goto done;
b8e0fe31
DH		 840 } else if (!strcmp(name, "Nintendo RVL-CNT-01-UC")) {
841 devtype = WIIMOTE_DEV_PRO_CONTROLLER;
842 goto done;
c57ff761
DH		 843 }
844
9316e580 845 if (vendor == USB_VENDOR_ID_NINTENDO) {
c57ff761
DH		 846 if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE) {
847 devtype = WIIMOTE_DEV_GEN10;
848 goto done;
849 } else if (product == USB_DEVICE_ID_NINTENDO_WIIMOTE2) {
850 devtype = WIIMOTE_DEV_GEN20;
851 goto done;
852 }
853 }
854
855done:
856 if (devtype == WIIMOTE_DEV_GENERIC)
857 hid_info(wdata->hdev, "cannot detect device; NAME: %s VID: %04x PID: %04x EXT: %04x\n",
858 name, vendor, product, exttype);
859 else
860 hid_info(wdata->hdev, "detected device: %s\n",
861 wiimote_devtype_names[devtype]);
862
27f06942 863 wiimote_modules_load(wdata, devtype);
c57ff761
DH		 864}
865
866static void wiimote_init_detect(struct wiimote_data *wdata)
867{
4148b6bf 868 __u8 exttype = WIIMOTE_EXT_NONE, extdata[6];
c57ff761
DH		 869 bool ext;
870 int ret;
871
872 wiimote_cmd_acquire_noint(wdata);
873
874 spin_lock_irq(&wdata->state.lock);
27f06942 875 wdata->state.devtype = WIIMOTE_DEV_UNKNOWN;
c57ff761
DH		 876 wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
877 wiiproto_req_status(wdata);
878 spin_unlock_irq(&wdata->state.lock);
879
880 ret = wiimote_cmd_wait_noint(wdata);
881 if (ret)
882 goto out_release;
883
884 spin_lock_irq(&wdata->state.lock);
885 ext = wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED;
886 spin_unlock_irq(&wdata->state.lock);
887
888 if (!ext)
889 goto out_release;
890
891 wiimote_cmd_init_ext(wdata);
4148b6bf 892 exttype = wiimote_cmd_read_ext(wdata, extdata);
c57ff761
DH		 893
894out_release:
895 wiimote_cmd_release(wdata);
896 wiimote_init_set_type(wdata, exttype);
9f329741 897
4148b6bf 898 /* schedule MP timer */
9f329741
DH		 899 spin_lock_irq(&wdata->state.lock);
900 if (!(wdata->state.flags & WIIPROTO_FLAG_BUILTIN_MP) &&
901 !(wdata->state.flags & WIIPROTO_FLAG_NO_MP))
902 mod_timer(&wdata->timer, jiffies + HZ * 4);
903 spin_unlock_irq(&wdata->state.lock);
4148b6bf
DH		 904}
905
906/*
907 * MP hotplug events are not generated by the wiimote. Therefore, we need
908 * polling to detect it. We use a 4s interval for polling MP registers. This
909 * seems reasonable considering applications can trigger it manually via
910 * sysfs requests.
911 */
912static void wiimote_init_poll_mp(struct wiimote_data *wdata)
913{
914 bool mp;
915 __u8 mpdata[6];
916
917 wiimote_cmd_acquire_noint(wdata);
918 wiimote_cmd_init_mp(wdata);
919 mp = wiimote_cmd_read_mp(wdata, mpdata);
920 wiimote_cmd_release(wdata);
921
922 /* load/unload MP module if it changed */
923 if (mp) {
924 if (!wdata->state.mp) {
925 hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n");
926 wiimote_mp_load(wdata);
927 }
928 } else if (wdata->state.mp) {
929 wiimote_mp_unload(wdata);
930 }
931
932 mod_timer(&wdata->timer, jiffies + HZ * 4);
933}
934
935/*
936 * Check whether the wiimote is in the expected state. The extension registers
937 * may change during hotplug and initialization so we might get hotplug events
938 * that we caused by remapping some memory.
939 * We use some heuristics here to check known states. If the wiimote is in the
940 * expected state, we can ignore the hotplug event.
941 *
942 * Returns "true" if the device is in expected state, "false" if we should
943 * redo hotplug handling and extension initialization.
944 */
945static bool wiimote_init_check(struct wiimote_data *wdata)
946{
947 __u32 flags;
948 __u8 type, data[6];
949 bool ret, poll_mp;
950
951 spin_lock_irq(&wdata->state.lock);
952 flags = wdata->state.flags;
953 spin_unlock_irq(&wdata->state.lock);
954
955 wiimote_cmd_acquire_noint(wdata);
956
957 /* If MP is used and active, but the extension is not, we expect:
958 * read_mp_mapped() == WIIMOTE_MP_SINGLE
959 * state.flags == !EXT_ACTIVE && !MP_PLUGGED && MP_ACTIVE
960 * We do not check EXT_PLUGGED because it might change during
961 * initialization of MP without extensions.
962 * - If MP is unplugged/replugged, read_mp_mapped() fails
963 * - If EXT is plugged, MP_PLUGGED will get set */
964 if (wdata->state.exttype == WIIMOTE_EXT_NONE &&
965 wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) {
966 type = wiimote_cmd_read_mp_mapped(wdata);
967 ret = type == WIIMOTE_MP_SINGLE;
968
969 spin_lock_irq(&wdata->state.lock);
970 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
971 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED);
972 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
973 spin_unlock_irq(&wdata->state.lock);
974
975 if (!ret)
976 hid_dbg(wdata->hdev, "state left: !EXT && MP\n");
977
978 /* while MP is mapped, we get EXT_PLUGGED events */
979 poll_mp = false;
980
981 goto out_release;
982 }
983
984 /* If MP is unused, but the extension port is used, we expect:
985 * read_ext == state.exttype
986 * state.flags == !MP_ACTIVE && EXT_ACTIVE
987 * - If MP is plugged/unplugged, our timer detects it
988 * - If EXT is unplugged/replugged, EXT_ACTIVE will become unset */
989 if (!(flags & WIIPROTO_FLAG_MP_USED) &&
990 wdata->state.exttype != WIIMOTE_EXT_NONE) {
991 type = wiimote_cmd_read_ext(wdata, data);
992 ret = type == wdata->state.exttype;
993
994 spin_lock_irq(&wdata->state.lock);
995 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
996 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
997 spin_unlock_irq(&wdata->state.lock);
998
999 if (!ret)
1000 hid_dbg(wdata->hdev, "state left: EXT && !MP\n");
1001
1002 /* poll MP for hotplug events */
1003 poll_mp = true;
1004
1005 goto out_release;
1006 }
1007
1008 /* If neither MP nor an extension are used, we expect:
1009 * read_ext() == WIIMOTE_EXT_NONE
1010 * state.flags == !MP_ACTIVE && !EXT_ACTIVE && !EXT_PLUGGED
1011 * No need to perform any action in this case as everything is
1012 * disabled already.
1013 * - If MP is plugged/unplugged, our timer detects it
1014 * - If EXT is plugged, EXT_PLUGGED will be set */
1015 if (!(flags & WIIPROTO_FLAG_MP_USED) &&
1016 wdata->state.exttype == WIIMOTE_EXT_NONE) {
1017 type = wiimote_cmd_read_ext(wdata, data);
1018 ret = type == wdata->state.exttype;
1019
1020 spin_lock_irq(&wdata->state.lock);
1021 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
1022 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
1023 ret = ret && !(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED);
1024 spin_unlock_irq(&wdata->state.lock);
1025
1026 if (!ret)
1027 hid_dbg(wdata->hdev, "state left: !EXT && !MP\n");
1028
1029 /* poll MP for hotplug events */
1030 poll_mp = true;
1031
1032 goto out_release;
1033 }
1034
1035 /* The trickiest part is if both EXT and MP are active. We cannot read
1036 * the EXT ID, anymore, because MP is mapped over it. However, we use
1037 * a handy trick here:
1038 * - EXT_ACTIVE is unset whenever !MP_PLUGGED is sent
1039 * MP_PLUGGED might be re-sent again before we are scheduled, but
1040 * EXT_ACTIVE will stay unset.
1041 * So it is enough to check for mp_mapped() and MP_ACTIVE and
1042 * EXT_ACTIVE. EXT_PLUGGED is a sanity check. */
1043 if (wdata->state.exttype != WIIMOTE_EXT_NONE &&
1044 wdata->state.mp > 0 && (flags & WIIPROTO_FLAG_MP_USED)) {
1045 type = wiimote_cmd_read_mp_mapped(wdata);
1046 ret = type != WIIMOTE_MP_NONE;
1047 ret = ret && type != WIIMOTE_MP_UNKNOWN;
1048 ret = ret && type != WIIMOTE_MP_SINGLE;
1049
1050 spin_lock_irq(&wdata->state.lock);
1051 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED);
1052 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE);
1053 ret = ret && (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE);
1054 spin_unlock_irq(&wdata->state.lock);
1055
1056 if (!ret)
1057 hid_dbg(wdata->hdev, "state left: EXT && MP\n");
1058
1059 /* while MP is mapped, we get EXT_PLUGGED events */
1060 poll_mp = false;
1061
1062 goto out_release;
1063 }
1064
1065 /* unknown state */
1066 ret = false;
1067
1068out_release:
1069 wiimote_cmd_release(wdata);
1070
1071 /* only poll for MP if requested and if state didn't change */
9f329741
DH		 1072 if (ret && poll_mp && !(flags & WIIPROTO_FLAG_BUILTIN_MP) &&
1073 !(flags & WIIPROTO_FLAG_NO_MP))
4148b6bf
DH		 1074 wiimote_init_poll_mp(wdata);
1075
1076 return ret;
1077}
1078
1079static const char *wiimote_exttype_names[WIIMOTE_EXT_NUM] = {
1080 [WIIMOTE_EXT_NONE] = "None",
1081 [WIIMOTE_EXT_UNKNOWN] = "Unknown",
b6ee67b3 1082 [WIIMOTE_EXT_NUNCHUK] = "Nintendo Wii Nunchuk",
9d6f9ecb 1083 [WIIMOTE_EXT_CLASSIC_CONTROLLER] = "Nintendo Wii Classic Controller",
f1d4bed4 1084 [WIIMOTE_EXT_BALANCE_BOARD] = "Nintendo Wii Balance Board",
b8e0fe31 1085 [WIIMOTE_EXT_PRO_CONTROLLER] = "Nintendo Wii U Pro Controller",
d4bdf2d2
NAL		 1086 [WIIMOTE_EXT_DRUMS] = "Nintendo Wii Drums",
1087 [WIIMOTE_EXT_GUITAR] = "Nintendo Wii Guitar",
4148b6bf
DH		 1088};
1089
1090/*
1091 * Handle hotplug events
1092 * If we receive an hotplug event and the device-check failed, we deinitialize
1093 * the extension ports, re-read all extension IDs and set the device into
1094 * the desired state. This involves mapping MP into the main extension
1095 * registers, setting up extension passthrough modes and initializing the
1096 * requested extensions.
1097 */
1098static void wiimote_init_hotplug(struct wiimote_data *wdata)
1099{
1100 __u8 exttype, extdata[6], mpdata[6];
1101 __u32 flags;
1102 bool mp;
1103
1104 hid_dbg(wdata->hdev, "detect extensions..\n");
1105
1106 wiimote_cmd_acquire_noint(wdata);
1107
1108 spin_lock_irq(&wdata->state.lock);
1109
1110 /* get state snapshot that we will then work on */
1111 flags = wdata->state.flags;
1112
1113 /* disable event forwarding temporarily */
1114 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1115 wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE;
1116
1117 spin_unlock_irq(&wdata->state.lock);
1118
1119 /* init extension and MP (deactivates current extension or MP) */
1120 wiimote_cmd_init_ext(wdata);
9f329741
DH		 1121 if (flags & WIIPROTO_FLAG_NO_MP) {
1122 mp = false;
1123 } else {
1124 wiimote_cmd_init_mp(wdata);
1125 mp = wiimote_cmd_read_mp(wdata, mpdata);
1126 }
4148b6bf
DH		 1127 exttype = wiimote_cmd_read_ext(wdata, extdata);
1128
1129 wiimote_cmd_release(wdata);
1130
1131 /* load/unload extension module if it changed */
1132 if (exttype != wdata->state.exttype) {
1133 /* unload previous extension */
1134 wiimote_ext_unload(wdata);
1135
1136 if (exttype == WIIMOTE_EXT_UNKNOWN) {
95f71266
AS		 1137 hid_info(wdata->hdev, "cannot detect extension; %6phC\n",
1138 extdata);
4148b6bf
DH		 1139 } else if (exttype == WIIMOTE_EXT_NONE) {
1140 spin_lock_irq(&wdata->state.lock);
1141 wdata->state.exttype = WIIMOTE_EXT_NONE;
1142 spin_unlock_irq(&wdata->state.lock);
1143 } else {
1144 hid_info(wdata->hdev, "detected extension: %s\n",
1145 wiimote_exttype_names[exttype]);
1146 /* try loading new extension */
1147 wiimote_ext_load(wdata, exttype);
1148 }
1149 }
1150
1151 /* load/unload MP module if it changed */
1152 if (mp) {
1153 if (!wdata->state.mp) {
1154 hid_info(wdata->hdev, "detected extension: Nintendo Wii Motion Plus\n");
1155 wiimote_mp_load(wdata);
1156 }
1157 } else if (wdata->state.mp) {
1158 wiimote_mp_unload(wdata);
1159 }
1160
1161 /* if MP is not used, do not map or activate it */
1162 if (!(flags & WIIPROTO_FLAG_MP_USED))
1163 mp = false;
1164
1165 /* map MP into main extension registers if used */
1166 if (mp) {
1167 wiimote_cmd_acquire_noint(wdata);
1168 wiimote_cmd_map_mp(wdata, exttype);
1169 wiimote_cmd_release(wdata);
1170
1171 /* delete MP hotplug timer */
1172 del_timer_sync(&wdata->timer);
1173 } else {
1174 /* reschedule MP hotplug timer */
9f329741
DH		 1175 if (!(flags & WIIPROTO_FLAG_BUILTIN_MP) &&
1176 !(flags & WIIPROTO_FLAG_NO_MP))
1177 mod_timer(&wdata->timer, jiffies + HZ * 4);
4148b6bf
DH		 1178 }
1179
1180 spin_lock_irq(&wdata->state.lock);
1181
1182 /* enable data forwarding again and set expected hotplug state */
1183 if (mp) {
1184 wdata->state.flags |= WIIPROTO_FLAG_MP_ACTIVE;
1185 if (wdata->state.exttype == WIIMOTE_EXT_NONE) {
1186 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1187 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1188 } else {
1189 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1190 wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED;
1191 wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE;
1192 }
1193 } else if (wdata->state.exttype != WIIMOTE_EXT_NONE) {
1194 wdata->state.flags |= WIIPROTO_FLAG_EXT_ACTIVE;
1195 }
1196
1197 /* request status report for hotplug state updates */
1198 wiiproto_req_status(wdata);
1199
1200 spin_unlock_irq(&wdata->state.lock);
1201
1202 hid_dbg(wdata->hdev, "detected extensions: MP: %d EXT: %d\n",
1203 wdata->state.mp, wdata->state.exttype);
c57ff761
DH		 1204}
1205
1206static void wiimote_init_worker(struct work_struct *work)
1207{
1208 struct wiimote_data *wdata = container_of(work, struct wiimote_data,
1209 init_worker);
c7da0867 1210 bool changed = false;
c57ff761 1211
c7da0867 1212 if (wdata->state.devtype == WIIMOTE_DEV_PENDING) {
c57ff761 1213 wiimote_init_detect(wdata);
c7da0867
DH		 1214 changed = true;
1215 }
1216
77a74809 1217 if (changed || !wiimote_init_check(wdata))
4148b6bf 1218 wiimote_init_hotplug(wdata);
c7da0867
DH		 1219
1220 if (changed)
1221 kobject_uevent(&wdata->hdev->dev.kobj, KOBJ_CHANGE);
4148b6bf
DH		 1222}
1223
1224void __wiimote_schedule(struct wiimote_data *wdata)
1225{
1226 if (!(wdata->state.flags & WIIPROTO_FLAG_EXITING))
1227 schedule_work(&wdata->init_worker);
1228}
1229
1230static void wiimote_schedule(struct wiimote_data *wdata)
1231{
1232 unsigned long flags;
1233
1234 spin_lock_irqsave(&wdata->state.lock, flags);
1235 __wiimote_schedule(wdata);
1236 spin_unlock_irqrestore(&wdata->state.lock, flags);
1237}
1238
e99e88a9 1239static void wiimote_init_timeout(struct timer_list *t)
4148b6bf 1240{
e99e88a9 1241 struct wiimote_data *wdata = from_timer(wdata, t, timer);
4148b6bf
DH		 1242
1243 wiimote_schedule(wdata);
c57ff761
DH		 1244}
1245
1246/* protocol handlers */
1247
1abb9ad3
DH		 1248static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
1249{
20cef813
DH		 1250 const __u8 *iter, *mods;
1251 const struct wiimod_ops *ops;
1252
4148b6bf
DH		 1253 ops = wiimod_ext_table[wdata->state.exttype];
1254 if (ops->in_keys) {
1255 ops->in_keys(wdata, payload);
1256 return;
1257 }
1258
20cef813
DH		 1259 mods = wiimote_devtype_mods[wdata->state.devtype];
1260 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1261 ops = wiimod_table[*iter];
1262 if (ops->in_keys) {
1263 ops->in_keys(wdata, payload);
1264 break;
1265 }
1266 }
1abb9ad3
DH		 1267}
1268
efcf9188
DH		 1269static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
1270{
0ea16757
DH		 1271 const __u8 *iter, *mods;
1272 const struct wiimod_ops *ops;
efcf9188 1273
4148b6bf
DH		 1274 ops = wiimod_ext_table[wdata->state.exttype];
1275 if (ops->in_accel) {
1276 ops->in_accel(wdata, payload);
1277 return;
1278 }
1279
0ea16757
DH		 1280 mods = wiimote_devtype_mods[wdata->state.devtype];
1281 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1282 ops = wiimod_table[*iter];
1283 if (ops->in_accel) {
1284 ops->in_accel(wdata, payload);
1285 break;
1286 }
1287 }
efcf9188
DH		 1288}
1289
4148b6bf
DH		 1290static bool valid_ext_handler(const struct wiimod_ops *ops, size_t len)
1291{
1292 if (!ops->in_ext)
1293 return false;
1294 if ((ops->flags & WIIMOD_FLAG_EXT8) && len < 8)
1295 return false;
1296 if ((ops->flags & WIIMOD_FLAG_EXT16) && len < 16)
1297 return false;
1298
1299 return true;
1300}
1301
1302static void handler_ext(struct wiimote_data *wdata, const __u8 *payload,
1303 size_t len)
1304{
876727ea
DH		 1305 static const __u8 invalid[21] = { 0xff, 0xff, 0xff, 0xff,
1306 0xff, 0xff, 0xff, 0xff,
1307 0xff, 0xff, 0xff, 0xff,
1308 0xff, 0xff, 0xff, 0xff,
1309 0xff, 0xff, 0xff, 0xff,
1310 0xff };
4148b6bf
DH		 1311 const __u8 *iter, *mods;
1312 const struct wiimod_ops *ops;
1313 bool is_mp;
1314
876727ea
DH		 1315 if (len > 21)
1316 len = 21;
1317 if (len < 6 || !memcmp(payload, invalid, len))
4148b6bf
DH		 1318 return;
1319
1320 /* if MP is active, track MP slot hotplugging */
1321 if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1322 /* this bit is set for invalid events (eg. during hotplug) */
1323 if (payload[5] & 0x01)
1324 return;
1325
1326 if (payload[4] & 0x01) {
1327 if (!(wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED)) {
1328 hid_dbg(wdata->hdev, "MP hotplug: 1\n");
1329 wdata->state.flags |= WIIPROTO_FLAG_MP_PLUGGED;
1330 __wiimote_schedule(wdata);
1331 }
1332 } else {
1333 if (wdata->state.flags & WIIPROTO_FLAG_MP_PLUGGED) {
1334 hid_dbg(wdata->hdev, "MP hotplug: 0\n");
1335 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1336 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1337 __wiimote_schedule(wdata);
1338 }
1339 }
1340
1341 /* detect MP data that is sent interleaved with EXT data */
1342 is_mp = payload[5] & 0x02;
1343 } else {
1344 is_mp = false;
1345 }
1346
1347 /* ignore EXT events if no extension is active */
1348 if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_ACTIVE) && !is_mp)
1349 return;
1350
1351 /* try forwarding to extension handler, first */
1352 ops = wiimod_ext_table[wdata->state.exttype];
1353 if (is_mp && ops->in_mp) {
1354 ops->in_mp(wdata, payload);
1355 return;
1356 } else if (!is_mp && valid_ext_handler(ops, len)) {
1357 ops->in_ext(wdata, payload);
1358 return;
1359 }
1360
1361 /* try forwarding to MP handler */
1362 ops = &wiimod_mp;
1363 if (is_mp && ops->in_mp) {
1364 ops->in_mp(wdata, payload);
1365 return;
1366 } else if (!is_mp && valid_ext_handler(ops, len)) {
1367 ops->in_ext(wdata, payload);
1368 return;
1369 }
1370
1371 /* try forwarding to loaded modules */
1372 mods = wiimote_devtype_mods[wdata->state.devtype];
1373 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1374 ops = wiimod_table[*iter];
1375 if (is_mp && ops->in_mp) {
1376 ops->in_mp(wdata, payload);
1377 return;
1378 } else if (!is_mp && valid_ext_handler(ops, len)) {
1379 ops->in_ext(wdata, payload);
1380 return;
1381 }
1382 }
1383}
1384
3b5f03c4
DH		 1385#define ir_to_input0(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 0)
1386#define ir_to_input1(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 1)
1387#define ir_to_input2(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 2)
1388#define ir_to_input3(wdata, ir, packed) handler_ir((wdata), (ir), (packed), 3)
eac39e7e 1389
3b5f03c4
DH		 1390static void handler_ir(struct wiimote_data *wdata, const __u8 *payload,
1391 bool packed, unsigned int id)
1392{
1393 const __u8 *iter, *mods;
1394 const struct wiimod_ops *ops;
eac39e7e 1395
4148b6bf
DH		 1396 ops = wiimod_ext_table[wdata->state.exttype];
1397 if (ops->in_ir) {
1398 ops->in_ir(wdata, payload, packed, id);
1399 return;
1400 }
1401
3b5f03c4
DH		 1402 mods = wiimote_devtype_mods[wdata->state.devtype];
1403 for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
1404 ops = wiimod_table[*iter];
1405 if (ops->in_ir) {
1406 ops->in_ir(wdata, payload, packed, id);
1407 break;
1408 }
eac39e7e 1409 }
eac39e7e 1410}
efcf9188 1411
2d44e3d2
DH		 1412/* reduced status report with "BB BB" key data only */
1413static void handler_status_K(struct wiimote_data *wdata,
1414 const __u8 *payload)
c87019e4
DH		 1415{
1416 handler_keys(wdata, payload);
1417
1418 /* on status reports the drm is reset so we need to resend the drm */
1419 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
2d44e3d2
DH		 1420}
1421
1422/* extended status report with "BB BB LF 00 00 VV" data */
1423static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
1424{
1425 handler_status_K(wdata, payload);
e3979a91 1426
c57ff761
DH		 1427 /* update extension status */
1428 if (payload[2] & 0x02) {
4148b6bf
DH		 1429 if (!(wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED)) {
1430 hid_dbg(wdata->hdev, "EXT hotplug: 1\n");
1431 wdata->state.flags |= WIIPROTO_FLAG_EXT_PLUGGED;
1432 __wiimote_schedule(wdata);
1433 }
c57ff761 1434 } else {
4148b6bf
DH		 1435 if (wdata->state.flags & WIIPROTO_FLAG_EXT_PLUGGED) {
1436 hid_dbg(wdata->hdev, "EXT hotplug: 0\n");
1437 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_PLUGGED;
1438 wdata->state.flags &= ~WIIPROTO_FLAG_MP_PLUGGED;
1439 wdata->state.flags &= ~WIIPROTO_FLAG_EXT_ACTIVE;
1440 wdata->state.flags &= ~WIIPROTO_FLAG_MP_ACTIVE;
1441 __wiimote_schedule(wdata);
1442 }
c57ff761 1443 }
cb99221b 1444
6b80bb94
DH		 1445 wdata->state.cmd_battery = payload[5];
1446 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0))
e3979a91 1447 wiimote_cmd_complete(wdata);
c87019e4
DH		 1448}
1449
2d44e3d2
DH		 1450/* reduced generic report with "BB BB" key data only */
1451static void handler_generic_K(struct wiimote_data *wdata, const __u8 *payload)
1452{
1453 handler_keys(wdata, payload);
1454}
1455
be1ecd62
DH		 1456static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
1457{
fad8c0e3
DH		 1458 __u16 offset = payload[3] << 8 | payload[4];
1459 __u8 size = (payload[2] >> 4) + 1;
1460 __u8 err = payload[2] & 0x0f;
1461
be1ecd62 1462 handler_keys(wdata, payload);
fad8c0e3
DH		 1463
1464 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
1465 if (err)
1466 size = 0;
1467 else if (size > wdata->state.cmd_read_size)
1468 size = wdata->state.cmd_read_size;
1469
1470 wdata->state.cmd_read_size = size;
1471 if (wdata->state.cmd_read_buf)
1472 memcpy(wdata->state.cmd_read_buf, &payload[5], size);
1473 wiimote_cmd_complete(wdata);
1474 }
be1ecd62
DH		 1475}
1476
c87019e4
DH		 1477static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
1478{
1479 __u8 err = payload[3];
1480 __u8 cmd = payload[2];
1481
1482 handler_keys(wdata, payload);
1483
33e84013
DH		 1484 if (wiimote_cmd_pending(wdata, cmd, 0)) {
1485 wdata->state.cmd_err = err;
1486 wiimote_cmd_complete(wdata);
1487 } else if (err) {
c87019e4
DH		 1488 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
1489 cmd);
33e84013 1490 }
c87019e4
DH		 1491}
1492
efcf9188
DH		 1493static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
1494{
1495 handler_keys(wdata, payload);
1496 handler_accel(wdata, payload);
1497}
1498
7336b9f9
DH		 1499static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
1500{
1501 handler_keys(wdata, payload);
4148b6bf 1502 handler_ext(wdata, &payload[2], 8);
7336b9f9
DH		 1503}
1504
efcf9188
DH		 1505static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
1506{
1507 handler_keys(wdata, payload);
1508 handler_accel(wdata, payload);
eac39e7e
DH		 1509 ir_to_input0(wdata, &payload[5], false);
1510 ir_to_input1(wdata, &payload[8], false);
1511 ir_to_input2(wdata, &payload[11], false);
1512 ir_to_input3(wdata, &payload[14], false);
eac39e7e
DH		 1513}
1514
7336b9f9
DH		 1515static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
1516{
1517 handler_keys(wdata, payload);
4148b6bf 1518 handler_ext(wdata, &payload[2], 19);
7336b9f9
DH		 1519}
1520
eac39e7e
DH		 1521static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
1522{
1523 handler_keys(wdata, payload);
1524 ir_to_input0(wdata, &payload[2], false);
1525 ir_to_input1(wdata, &payload[4], true);
1526 ir_to_input2(wdata, &payload[7], false);
1527 ir_to_input3(wdata, &payload[9], true);
4148b6bf 1528 handler_ext(wdata, &payload[12], 9);
efcf9188
DH		 1529}
1530
1531static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
1532{
1533 handler_keys(wdata, payload);
1534 handler_accel(wdata, payload);
4148b6bf 1535 handler_ext(wdata, &payload[5], 16);
efcf9188
DH		 1536}
1537
1538static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
1539{
1540 handler_keys(wdata, payload);
1541 handler_accel(wdata, payload);
eac39e7e
DH		 1542 ir_to_input0(wdata, &payload[5], false);
1543 ir_to_input1(wdata, &payload[7], true);
1544 ir_to_input2(wdata, &payload[10], false);
1545 ir_to_input3(wdata, &payload[12], true);
4148b6bf 1546 handler_ext(wdata, &payload[15], 6);
efcf9188
DH		 1547}
1548
7336b9f9
DH		 1549static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
1550{
4148b6bf 1551 handler_ext(wdata, payload, 21);
7336b9f9
DH		 1552}
1553
efcf9188
DH		 1554static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
1555{
1556 handler_keys(wdata, payload);
1557
1558 wdata->state.accel_split[0] = payload[2];
1559 wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
1560 wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
eac39e7e
DH		 1561
1562 ir_to_input0(wdata, &payload[3], false);
1563 ir_to_input1(wdata, &payload[12], false);
efcf9188
DH		 1564}
1565
1566static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
1567{
1568 __u8 buf[5];
1569
1570 handler_keys(wdata, payload);
1571
1572 wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
1573 wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
1574
1575 buf[0] = 0;
1576 buf[1] = 0;
1577 buf[2] = wdata->state.accel_split[0];
1578 buf[3] = payload[2];
1579 buf[4] = wdata->state.accel_split[1];
1580 handler_accel(wdata, buf);
eac39e7e
DH		 1581
1582 ir_to_input2(wdata, &payload[3], false);
1583 ir_to_input3(wdata, &payload[12], false);
efcf9188
DH		 1584}
1585
a4d19197
DH		 1586struct wiiproto_handler {
1587 __u8 id;
1588 size_t size;
1589 void (*func)(struct wiimote_data *wdata, const __u8 *payload);
1590};
1591
1592static struct wiiproto_handler handlers[] = {
c87019e4 1593 { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
2d44e3d2 1594 { .id = WIIPROTO_REQ_STATUS, .size = 2, .func = handler_status_K },
be1ecd62 1595 { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
2d44e3d2 1596 { .id = WIIPROTO_REQ_DATA, .size = 2, .func = handler_generic_K },
c87019e4 1597 { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
2d44e3d2 1598 { .id = WIIPROTO_REQ_RETURN, .size = 2, .func = handler_generic_K },
1abb9ad3 1599 { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
efcf9188 1600 { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
2d44e3d2 1601 { .id = WIIPROTO_REQ_DRM_KA, .size = 2, .func = handler_generic_K },
7336b9f9 1602 { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
2d44e3d2 1603 { .id = WIIPROTO_REQ_DRM_KE, .size = 2, .func = handler_generic_K },
efcf9188 1604 { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
2d44e3d2 1605 { .id = WIIPROTO_REQ_DRM_KAI, .size = 2, .func = handler_generic_K },
7336b9f9 1606 { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
2d44e3d2 1607 { .id = WIIPROTO_REQ_DRM_KEE, .size = 2, .func = handler_generic_K },
efcf9188 1608 { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
2d44e3d2 1609 { .id = WIIPROTO_REQ_DRM_KAE, .size = 2, .func = handler_generic_K },
eac39e7e 1610 { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
2d44e3d2 1611 { .id = WIIPROTO_REQ_DRM_KIE, .size = 2, .func = handler_generic_K },
efcf9188 1612 { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
2d44e3d2 1613 { .id = WIIPROTO_REQ_DRM_KAIE, .size = 2, .func = handler_generic_K },
7336b9f9 1614 { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
efcf9188
DH		 1615 { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
1616 { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
a4d19197
DH		 1617 { .id = 0 }
1618};
1619
02fb72a0
DH		 1620static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
1621 u8 *raw_data, int size)
1622{
4d36e975 1623 struct wiimote_data *wdata = hid_get_drvdata(hdev);
a4d19197
DH		 1624 struct wiiproto_handler *h;
1625 int i;
32a0d9a5 1626 unsigned long flags;
4d36e975 1627
02fb72a0
DH		 1628 if (size < 1)
1629 return -EINVAL;
1630
32a0d9a5
DH		 1631 spin_lock_irqsave(&wdata->state.lock, flags);
1632
a4d19197
DH		 1633 for (i = 0; handlers[i].id; ++i) {
1634 h = &handlers[i];
7336b9f9 1635 if (h->id == raw_data[0] && h->size < size) {
a4d19197 1636 h->func(wdata, &raw_data[1]);
2d44e3d2 1637 break;
7336b9f9 1638 }
a4d19197
DH		 1639 }
1640
2d44e3d2 1641 if (!handlers[i].id)
7336b9f9
DH		 1642 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
1643 size);
1644
32a0d9a5
DH		 1645 spin_unlock_irqrestore(&wdata->state.lock, flags);
1646
02fb72a0
DH		 1647 return 0;
1648}
1649
c7da0867
DH		 1650static ssize_t wiimote_ext_show(struct device *dev,
1651 struct device_attribute *attr,
1652 char *buf)
1653{
1654 struct wiimote_data *wdata = dev_to_wii(dev);
1655 __u8 type;
1656 unsigned long flags;
1657
1658 spin_lock_irqsave(&wdata->state.lock, flags);
1659 type = wdata->state.exttype;
1660 spin_unlock_irqrestore(&wdata->state.lock, flags);
1661
1662 switch (type) {
1663 case WIIMOTE_EXT_NONE:
1664 return sprintf(buf, "none\n");
1665 case WIIMOTE_EXT_NUNCHUK:
1666 return sprintf(buf, "nunchuk\n");
1667 case WIIMOTE_EXT_CLASSIC_CONTROLLER:
1668 return sprintf(buf, "classic\n");
1669 case WIIMOTE_EXT_BALANCE_BOARD:
1670 return sprintf(buf, "balanceboard\n");
b8e0fe31
DH		 1671 case WIIMOTE_EXT_PRO_CONTROLLER:
1672 return sprintf(buf, "procontroller\n");
d4bdf2d2
NAL		 1673 case WIIMOTE_EXT_DRUMS:
1674 return sprintf(buf, "drums\n");
1675 case WIIMOTE_EXT_GUITAR:
1676 return sprintf(buf, "guitar\n");
c7da0867
DH		 1677 case WIIMOTE_EXT_UNKNOWN:
1678 /* fallthrough */
1679 default:
1680 return sprintf(buf, "unknown\n");
1681 }
1682}
1683
1684static ssize_t wiimote_ext_store(struct device *dev,
1685 struct device_attribute *attr,
1686 const char *buf, size_t count)
1687{
1688 struct wiimote_data *wdata = dev_to_wii(dev);
1689
1690 if (!strcmp(buf, "scan")) {
1691 wiimote_schedule(wdata);
1692 } else {
1693 return -EINVAL;
1694 }
1695
1696 return strnlen(buf, PAGE_SIZE);
1697}
1698
1699static DEVICE_ATTR(extension, S_IRUGO | S_IWUSR | S_IWGRP, wiimote_ext_show,
1700 wiimote_ext_store);
1701
1702static ssize_t wiimote_dev_show(struct device *dev,
1703 struct device_attribute *attr,
1704 char *buf)
1705{
1706 struct wiimote_data *wdata = dev_to_wii(dev);
1707 __u8 type;
1708 unsigned long flags;
1709
1710 spin_lock_irqsave(&wdata->state.lock, flags);
1711 type = wdata->state.devtype;
1712 spin_unlock_irqrestore(&wdata->state.lock, flags);
1713
1714 switch (type) {
1715 case WIIMOTE_DEV_GENERIC:
1716 return sprintf(buf, "generic\n");
1717 case WIIMOTE_DEV_GEN10:
1718 return sprintf(buf, "gen10\n");
1719 case WIIMOTE_DEV_GEN20:
1720 return sprintf(buf, "gen20\n");
1721 case WIIMOTE_DEV_BALANCE_BOARD:
1722 return sprintf(buf, "balanceboard\n");
b8e0fe31
DH		 1723 case WIIMOTE_DEV_PRO_CONTROLLER:
1724 return sprintf(buf, "procontroller\n");
c7da0867
DH		 1725 case WIIMOTE_DEV_PENDING:
1726 return sprintf(buf, "pending\n");
1727 case WIIMOTE_DEV_UNKNOWN:
1728 /* fallthrough */
1729 default:
1730 return sprintf(buf, "unknown\n");
1731 }
1732}
1733
1734static DEVICE_ATTR(devtype, S_IRUGO, wiimote_dev_show, NULL);
1735
e894d0e3
DH		 1736static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1737{
1738 struct wiimote_data *wdata;
1739
1740 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1741 if (!wdata)
1742 return NULL;
1743
1744 wdata->hdev = hdev;
1745 hid_set_drvdata(hdev, wdata);
1746
13938538
DH		 1747 spin_lock_init(&wdata->queue.lock);
1748 INIT_WORK(&wdata->queue.worker, wiimote_queue_worker);
23c063cb 1749
32a0d9a5 1750 spin_lock_init(&wdata->state.lock);
29d28064
DH		 1751 init_completion(&wdata->state.ready);
1752 mutex_init(&wdata->state.sync);
43d782ae 1753 wdata->state.drm = WIIPROTO_REQ_DRM_K;
6b80bb94 1754 wdata->state.cmd_battery = 0xff;
32a0d9a5 1755
c57ff761 1756 INIT_WORK(&wdata->init_worker, wiimote_init_worker);
e99e88a9 1757 timer_setup(&wdata->timer, wiimote_init_timeout, 0);
c57ff761 1758
e894d0e3
DH		 1759 return wdata;
1760}
1761
1762static void wiimote_destroy(struct wiimote_data *wdata)
1763{
4148b6bf
DH		 1764 unsigned long flags;
1765
43e5e7c6 1766 wiidebug_deinit(wdata);
4148b6bf
DH		 1767
1768 /* prevent init_worker from being scheduled again */
1769 spin_lock_irqsave(&wdata->state.lock, flags);
1770 wdata->state.flags |= WIIPROTO_FLAG_EXITING;
1771 spin_unlock_irqrestore(&wdata->state.lock, flags);
3989ef6c 1772
20cef813 1773 cancel_work_sync(&wdata->init_worker);
4148b6bf
DH		 1774 del_timer_sync(&wdata->timer);
1775
c7da0867
DH		 1776 device_remove_file(&wdata->hdev->dev, &dev_attr_devtype);
1777 device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
1778
4148b6bf
DH		 1779 wiimote_mp_unload(wdata);
1780 wiimote_ext_unload(wdata);
27f06942 1781 wiimote_modules_unload(wdata);
13938538 1782 cancel_work_sync(&wdata->queue.worker);
5682b1a8 1783 hid_hw_close(wdata->hdev);
3989ef6c
DH		 1784 hid_hw_stop(wdata->hdev);
1785
e894d0e3
DH		 1786 kfree(wdata);
1787}
1788
02fb72a0
DH		 1789static int wiimote_hid_probe(struct hid_device *hdev,
1790 const struct hid_device_id *id)
fb51b443 1791{
e894d0e3 1792 struct wiimote_data *wdata;
02fb72a0
DH		 1793 int ret;
1794
90120d66
DH		 1795 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1796
e894d0e3
DH		 1797 wdata = wiimote_create(hdev);
1798 if (!wdata) {
1799 hid_err(hdev, "Can't alloc device\n");
1800 return -ENOMEM;
1801 }
1802
02fb72a0
DH		 1803 ret = hid_parse(hdev);
1804 if (ret) {
1805 hid_err(hdev, "HID parse failed\n");
e894d0e3 1806 goto err;
02fb72a0
DH		 1807 }
1808
1809 ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1810 if (ret) {
1811 hid_err(hdev, "HW start failed\n");
e894d0e3 1812 goto err;
02fb72a0
DH		 1813 }
1814
5682b1a8
DH		 1815 ret = hid_hw_open(hdev);
1816 if (ret) {
1817 hid_err(hdev, "cannot start hardware I/O\n");
1818 goto err_stop;
1819 }
1820
c7da0867
DH		 1821 ret = device_create_file(&hdev->dev, &dev_attr_extension);
1822 if (ret) {
1823 hid_err(hdev, "cannot create sysfs attribute\n");
1824 goto err_close;
1825 }
1826
1827 ret = device_create_file(&hdev->dev, &dev_attr_devtype);
1828 if (ret) {
1829 hid_err(hdev, "cannot create sysfs attribute\n");
1830 goto err_ext;
1831 }
1832
43e5e7c6
DH		 1833 ret = wiidebug_init(wdata);
1834 if (ret)
1835 goto err_free;
1836
02fb72a0 1837 hid_info(hdev, "New device registered\n");
32a0d9a5 1838
c57ff761 1839 /* schedule device detection */
4148b6bf 1840 wiimote_schedule(wdata);
c57ff761 1841
fb51b443 1842 return 0;
e894d0e3 1843
3989ef6c
DH		 1844err_free:
1845 wiimote_destroy(wdata);
1846 return ret;
1847
c7da0867
DH		 1848err_ext:
1849 device_remove_file(&wdata->hdev->dev, &dev_attr_extension);
1850err_close:
1851 hid_hw_close(hdev);
672bc4e0
DH		 1852err_stop:
1853 hid_hw_stop(hdev);
e894d0e3 1854err:
f363e4f6 1855 input_free_device(wdata->ir);
98a558ae 1856 input_free_device(wdata->accel);
3989ef6c 1857 kfree(wdata);
e894d0e3 1858 return ret;
fb51b443
DH		 1859}
1860
02fb72a0
DH		 1861static void wiimote_hid_remove(struct hid_device *hdev)
1862{
e894d0e3
DH		 1863 struct wiimote_data *wdata = hid_get_drvdata(hdev);
1864
02fb72a0 1865 hid_info(hdev, "Device removed\n");
e894d0e3 1866 wiimote_destroy(wdata);
02fb72a0
DH		 1867}
1868
1869static const struct hid_device_id wiimote_hid_devices[] = {
1870 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1871 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
a33042fa
DH		 1872 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1873 USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
02fb72a0
DH		 1874 { }
1875};
1876MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1877
1878static struct hid_driver wiimote_hid_driver = {
1879 .name = "wiimote",
1880 .id_table = wiimote_hid_devices,
1881 .probe = wiimote_hid_probe,
1882 .remove = wiimote_hid_remove,
1883 .raw_event = wiimote_hid_event,
1884};
f425458e 1885module_hid_driver(wiimote_hid_driver);
02fb72a0 1886
fb51b443
DH		 1887MODULE_LICENSE("GPL");
1888MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
92eda7e4 1889MODULE_DESCRIPTION("Driver for Nintendo Wii / Wii U peripherals");
Linux 6.x block layer and io_uring tree(s)