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-rw-r--r--drivers/hid/hid-wiimote-core.c1316
1 files changed, 1316 insertions, 0 deletions
diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c
new file mode 100644
index 00000000000..61881b35c67
--- /dev/null
+++ b/drivers/hid/hid-wiimote-core.c
@@ -0,0 +1,1316 @@
1/*
2 * HID driver for Nintendo Wiimote devices
3 * Copyright (c) 2011 David Herrmann
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/leds.h>
18#include <linux/module.h>
19#include <linux/mutex.h>
20#include <linux/power_supply.h>
21#include <linux/spinlock.h>
22#include "hid-ids.h"
23#include "hid-wiimote.h"
24
25enum wiiproto_keys {
26 WIIPROTO_KEY_LEFT,
27 WIIPROTO_KEY_RIGHT,
28 WIIPROTO_KEY_UP,
29 WIIPROTO_KEY_DOWN,
30 WIIPROTO_KEY_PLUS,
31 WIIPROTO_KEY_MINUS,
32 WIIPROTO_KEY_ONE,
33 WIIPROTO_KEY_TWO,
34 WIIPROTO_KEY_A,
35 WIIPROTO_KEY_B,
36 WIIPROTO_KEY_HOME,
37 WIIPROTO_KEY_COUNT
38};
39
40static __u16 wiiproto_keymap[] = {
41 KEY_LEFT, /* WIIPROTO_KEY_LEFT */
42 KEY_RIGHT, /* WIIPROTO_KEY_RIGHT */
43 KEY_UP, /* WIIPROTO_KEY_UP */
44 KEY_DOWN, /* WIIPROTO_KEY_DOWN */
45 KEY_NEXT, /* WIIPROTO_KEY_PLUS */
46 KEY_PREVIOUS, /* WIIPROTO_KEY_MINUS */
47 BTN_1, /* WIIPROTO_KEY_ONE */
48 BTN_2, /* WIIPROTO_KEY_TWO */
49 BTN_A, /* WIIPROTO_KEY_A */
50 BTN_B, /* WIIPROTO_KEY_B */
51 BTN_MODE, /* WIIPROTO_KEY_HOME */
52};
53
54static enum power_supply_property wiimote_battery_props[] = {
55 POWER_SUPPLY_PROP_CAPACITY
56};
57
58static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
59 size_t count)
60{
61 __u8 *buf;
62 ssize_t ret;
63
64 if (!hdev->hid_output_raw_report)
65 return -ENODEV;
66
67 buf = kmemdup(buffer, count, GFP_KERNEL);
68 if (!buf)
69 return -ENOMEM;
70
71 ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
72
73 kfree(buf);
74 return ret;
75}
76
77static void wiimote_worker(struct work_struct *work)
78{
79 struct wiimote_data *wdata = container_of(work, struct wiimote_data,
80 worker);
81 unsigned long flags;
82
83 spin_lock_irqsave(&wdata->qlock, flags);
84
85 while (wdata->head != wdata->tail) {
86 spin_unlock_irqrestore(&wdata->qlock, flags);
87 wiimote_hid_send(wdata->hdev, wdata->outq[wdata->tail].data,
88 wdata->outq[wdata->tail].size);
89 spin_lock_irqsave(&wdata->qlock, flags);
90
91 wdata->tail = (wdata->tail + 1) % WIIMOTE_BUFSIZE;
92 }
93
94 spin_unlock_irqrestore(&wdata->qlock, flags);
95}
96
97static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
98 size_t count)
99{
100 unsigned long flags;
101 __u8 newhead;
102
103 if (count > HID_MAX_BUFFER_SIZE) {
104 hid_warn(wdata->hdev, "Sending too large output report\n");
105 return;
106 }
107
108 /*
109 * Copy new request into our output queue and check whether the
110 * queue is full. If it is full, discard this request.
111 * If it is empty we need to start a new worker that will
112 * send out the buffer to the hid device.
113 * If the queue is not empty, then there must be a worker
114 * that is currently sending out our buffer and this worker
115 * will reschedule itself until the queue is empty.
116 */
117
118 spin_lock_irqsave(&wdata->qlock, flags);
119
120 memcpy(wdata->outq[wdata->head].data, buffer, count);
121 wdata->outq[wdata->head].size = count;
122 newhead = (wdata->head + 1) % WIIMOTE_BUFSIZE;
123
124 if (wdata->head == wdata->tail) {
125 wdata->head = newhead;
126 schedule_work(&wdata->worker);
127 } else if (newhead != wdata->tail) {
128 wdata->head = newhead;
129 } else {
130 hid_warn(wdata->hdev, "Output queue is full");
131 }
132
133 spin_unlock_irqrestore(&wdata->qlock, flags);
134}
135
136/*
137 * This sets the rumble bit on the given output report if rumble is
138 * currently enabled.
139 * \cmd1 must point to the second byte in the output report => &cmd[1]
140 * This must be called on nearly every output report before passing it
141 * into the output queue!
142 */
143static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
144{
145 if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
146 *cmd1 |= 0x01;
147}
148
149static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
150{
151 __u8 cmd[2];
152
153 rumble = !!rumble;
154 if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
155 return;
156
157 if (rumble)
158 wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
159 else
160 wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
161
162 cmd[0] = WIIPROTO_REQ_RUMBLE;
163 cmd[1] = 0;
164
165 wiiproto_keep_rumble(wdata, &cmd[1]);
166 wiimote_queue(wdata, cmd, sizeof(cmd));
167}
168
169static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
170{
171 __u8 cmd[2];
172
173 leds &= WIIPROTO_FLAGS_LEDS;
174 if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
175 return;
176 wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
177
178 cmd[0] = WIIPROTO_REQ_LED;
179 cmd[1] = 0;
180
181 if (leds & WIIPROTO_FLAG_LED1)
182 cmd[1] |= 0x10;
183 if (leds & WIIPROTO_FLAG_LED2)
184 cmd[1] |= 0x20;
185 if (leds & WIIPROTO_FLAG_LED3)
186 cmd[1] |= 0x40;
187 if (leds & WIIPROTO_FLAG_LED4)
188 cmd[1] |= 0x80;
189
190 wiiproto_keep_rumble(wdata, &cmd[1]);
191 wiimote_queue(wdata, cmd, sizeof(cmd));
192}
193
194/*
195 * Check what peripherals of the wiimote are currently
196 * active and select a proper DRM that supports all of
197 * the requested data inputs.
198 */
199static __u8 select_drm(struct wiimote_data *wdata)
200{
201 __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
202 bool ext = wiiext_active(wdata);
203
204 if (ir == WIIPROTO_FLAG_IR_BASIC) {
205 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
206 return WIIPROTO_REQ_DRM_KAIE;
207 else
208 return WIIPROTO_REQ_DRM_KIE;
209 } else if (ir == WIIPROTO_FLAG_IR_EXT) {
210 return WIIPROTO_REQ_DRM_KAI;
211 } else if (ir == WIIPROTO_FLAG_IR_FULL) {
212 return WIIPROTO_REQ_DRM_SKAI1;
213 } else {
214 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
215 if (ext)
216 return WIIPROTO_REQ_DRM_KAE;
217 else
218 return WIIPROTO_REQ_DRM_KA;
219 } else {
220 if (ext)
221 return WIIPROTO_REQ_DRM_KE;
222 else
223 return WIIPROTO_REQ_DRM_K;
224 }
225 }
226}
227
228void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
229{
230 __u8 cmd[3];
231
232 if (drm == WIIPROTO_REQ_NULL)
233 drm = select_drm(wdata);
234
235 cmd[0] = WIIPROTO_REQ_DRM;
236 cmd[1] = 0;
237 cmd[2] = drm;
238
239 wdata->state.drm = drm;
240 wiiproto_keep_rumble(wdata, &cmd[1]);
241 wiimote_queue(wdata, cmd, sizeof(cmd));
242}
243
244static void wiiproto_req_status(struct wiimote_data *wdata)
245{
246 __u8 cmd[2];
247
248 cmd[0] = WIIPROTO_REQ_SREQ;
249 cmd[1] = 0;
250
251 wiiproto_keep_rumble(wdata, &cmd[1]);
252 wiimote_queue(wdata, cmd, sizeof(cmd));
253}
254
255static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
256{
257 accel = !!accel;
258 if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
259 return;
260
261 if (accel)
262 wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
263 else
264 wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
265
266 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
267}
268
269static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
270{
271 __u8 cmd[2];
272
273 cmd[0] = WIIPROTO_REQ_IR1;
274 cmd[1] = flags;
275
276 wiiproto_keep_rumble(wdata, &cmd[1]);
277 wiimote_queue(wdata, cmd, sizeof(cmd));
278}
279
280static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
281{
282 __u8 cmd[2];
283
284 cmd[0] = WIIPROTO_REQ_IR2;
285 cmd[1] = flags;
286
287 wiiproto_keep_rumble(wdata, &cmd[1]);
288 wiimote_queue(wdata, cmd, sizeof(cmd));
289}
290
291#define wiiproto_req_wreg(wdata, os, buf, sz) \
292 wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
293
294#define wiiproto_req_weeprom(wdata, os, buf, sz) \
295 wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
296
297static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
298 __u32 offset, const __u8 *buf, __u8 size)
299{
300 __u8 cmd[22];
301
302 if (size > 16 || size == 0) {
303 hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
304 return;
305 }
306
307 memset(cmd, 0, sizeof(cmd));
308 cmd[0] = WIIPROTO_REQ_WMEM;
309 cmd[2] = (offset >> 16) & 0xff;
310 cmd[3] = (offset >> 8) & 0xff;
311 cmd[4] = offset & 0xff;
312 cmd[5] = size;
313 memcpy(&cmd[6], buf, size);
314
315 if (!eeprom)
316 cmd[1] |= 0x04;
317
318 wiiproto_keep_rumble(wdata, &cmd[1]);
319 wiimote_queue(wdata, cmd, sizeof(cmd));
320}
321
322void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
323 __u16 size)
324{
325 __u8 cmd[7];
326
327 if (size == 0) {
328 hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
329 return;
330 }
331
332 cmd[0] = WIIPROTO_REQ_RMEM;
333 cmd[1] = 0;
334 cmd[2] = (offset >> 16) & 0xff;
335 cmd[3] = (offset >> 8) & 0xff;
336 cmd[4] = offset & 0xff;
337 cmd[5] = (size >> 8) & 0xff;
338 cmd[6] = size & 0xff;
339
340 if (!eeprom)
341 cmd[1] |= 0x04;
342
343 wiiproto_keep_rumble(wdata, &cmd[1]);
344 wiimote_queue(wdata, cmd, sizeof(cmd));
345}
346
347/* requries the cmd-mutex to be held */
348int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
349 const __u8 *wmem, __u8 size)
350{
351 unsigned long flags;
352 int ret;
353
354 spin_lock_irqsave(&wdata->state.lock, flags);
355 wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
356 wiiproto_req_wreg(wdata, offset, wmem, size);
357 spin_unlock_irqrestore(&wdata->state.lock, flags);
358
359 ret = wiimote_cmd_wait(wdata);
360 if (!ret && wdata->state.cmd_err)
361 ret = -EIO;
362
363 return ret;
364}
365
366/* requries the cmd-mutex to be held */
367ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
368 __u8 size)
369{
370 unsigned long flags;
371 ssize_t ret;
372
373 spin_lock_irqsave(&wdata->state.lock, flags);
374 wdata->state.cmd_read_size = size;
375 wdata->state.cmd_read_buf = rmem;
376 wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
377 wiiproto_req_rreg(wdata, offset, size);
378 spin_unlock_irqrestore(&wdata->state.lock, flags);
379
380 ret = wiimote_cmd_wait(wdata);
381
382 spin_lock_irqsave(&wdata->state.lock, flags);
383 wdata->state.cmd_read_buf = NULL;
384 spin_unlock_irqrestore(&wdata->state.lock, flags);
385
386 if (!ret) {
387 if (wdata->state.cmd_read_size == 0)
388 ret = -EIO;
389 else
390 ret = wdata->state.cmd_read_size;
391 }
392
393 return ret;
394}
395
396static int wiimote_battery_get_property(struct power_supply *psy,
397 enum power_supply_property psp,
398 union power_supply_propval *val)
399{
400 struct wiimote_data *wdata = container_of(psy,
401 struct wiimote_data, battery);
402 int ret = 0, state;
403 unsigned long flags;
404
405 ret = wiimote_cmd_acquire(wdata);
406 if (ret)
407 return ret;
408
409 spin_lock_irqsave(&wdata->state.lock, flags);
410 wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
411 wiiproto_req_status(wdata);
412 spin_unlock_irqrestore(&wdata->state.lock, flags);
413
414 ret = wiimote_cmd_wait(wdata);
415 state = wdata->state.cmd_battery;
416 wiimote_cmd_release(wdata);
417
418 if (ret)
419 return ret;
420
421 switch (psp) {
422 case POWER_SUPPLY_PROP_CAPACITY:
423 val->intval = state * 100 / 255;
424 break;
425 default:
426 ret = -EINVAL;
427 break;
428 }
429
430 return ret;
431}
432
433static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
434{
435 int ret;
436 unsigned long flags;
437 __u8 format = 0;
438 static const __u8 data_enable[] = { 0x01 };
439 static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
440 0x00, 0xaa, 0x00, 0x64 };
441 static const __u8 data_sens2[] = { 0x63, 0x03 };
442 static const __u8 data_fin[] = { 0x08 };
443
444 spin_lock_irqsave(&wdata->state.lock, flags);
445
446 if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
447 spin_unlock_irqrestore(&wdata->state.lock, flags);
448 return 0;
449 }
450
451 if (mode == 0) {
452 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
453 wiiproto_req_ir1(wdata, 0);
454 wiiproto_req_ir2(wdata, 0);
455 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
456 spin_unlock_irqrestore(&wdata->state.lock, flags);
457 return 0;
458 }
459
460 spin_unlock_irqrestore(&wdata->state.lock, flags);
461
462 ret = wiimote_cmd_acquire(wdata);
463 if (ret)
464 return ret;
465
466 /* send PIXEL CLOCK ENABLE cmd first */
467 spin_lock_irqsave(&wdata->state.lock, flags);
468 wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
469 wiiproto_req_ir1(wdata, 0x06);
470 spin_unlock_irqrestore(&wdata->state.lock, flags);
471
472 ret = wiimote_cmd_wait(wdata);
473 if (ret)
474 goto unlock;
475 if (wdata->state.cmd_err) {
476 ret = -EIO;
477 goto unlock;
478 }
479
480 /* enable IR LOGIC */
481 spin_lock_irqsave(&wdata->state.lock, flags);
482 wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
483 wiiproto_req_ir2(wdata, 0x06);
484 spin_unlock_irqrestore(&wdata->state.lock, flags);
485
486 ret = wiimote_cmd_wait(wdata);
487 if (ret)
488 goto unlock;
489 if (wdata->state.cmd_err) {
490 ret = -EIO;
491 goto unlock;
492 }
493
494 /* enable IR cam but do not make it send data, yet */
495 ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
496 sizeof(data_enable));
497 if (ret)
498 goto unlock;
499
500 /* write first sensitivity block */
501 ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
502 sizeof(data_sens1));
503 if (ret)
504 goto unlock;
505
506 /* write second sensitivity block */
507 ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
508 sizeof(data_sens2));
509 if (ret)
510 goto unlock;
511
512 /* put IR cam into desired state */
513 switch (mode) {
514 case WIIPROTO_FLAG_IR_FULL:
515 format = 5;
516 break;
517 case WIIPROTO_FLAG_IR_EXT:
518 format = 3;
519 break;
520 case WIIPROTO_FLAG_IR_BASIC:
521 format = 1;
522 break;
523 }
524 ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
525 if (ret)
526 goto unlock;
527
528 /* make IR cam send data */
529 ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
530 if (ret)
531 goto unlock;
532
533 /* request new DRM mode compatible to IR mode */
534 spin_lock_irqsave(&wdata->state.lock, flags);
535 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
536 wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
537 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
538 spin_unlock_irqrestore(&wdata->state.lock, flags);
539
540unlock:
541 wiimote_cmd_release(wdata);
542 return ret;
543}
544
545static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
546{
547 struct wiimote_data *wdata;
548 struct device *dev = led_dev->dev->parent;
549 int i;
550 unsigned long flags;
551 bool value = false;
552
553 wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
554
555 for (i = 0; i < 4; ++i) {
556 if (wdata->leds[i] == led_dev) {
557 spin_lock_irqsave(&wdata->state.lock, flags);
558 value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
559 spin_unlock_irqrestore(&wdata->state.lock, flags);
560 break;
561 }
562 }
563
564 return value ? LED_FULL : LED_OFF;
565}
566
567static void wiimote_leds_set(struct led_classdev *led_dev,
568 enum led_brightness value)
569{
570 struct wiimote_data *wdata;
571 struct device *dev = led_dev->dev->parent;
572 int i;
573 unsigned long flags;
574 __u8 state, flag;
575
576 wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
577
578 for (i = 0; i < 4; ++i) {
579 if (wdata->leds[i] == led_dev) {
580 flag = WIIPROTO_FLAG_LED(i + 1);
581 spin_lock_irqsave(&wdata->state.lock, flags);
582 state = wdata->state.flags;
583 if (value == LED_OFF)
584 wiiproto_req_leds(wdata, state & ~flag);
585 else
586 wiiproto_req_leds(wdata, state | flag);
587 spin_unlock_irqrestore(&wdata->state.lock, flags);
588 break;
589 }
590 }
591}
592
593static int wiimote_ff_play(struct input_dev *dev, void *data,
594 struct ff_effect *eff)
595{
596 struct wiimote_data *wdata = input_get_drvdata(dev);
597 __u8 value;
598 unsigned long flags;
599
600 /*
601 * The wiimote supports only a single rumble motor so if any magnitude
602 * is set to non-zero then we start the rumble motor. If both are set to
603 * zero, we stop the rumble motor.
604 */
605
606 if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
607 value = 1;
608 else
609 value = 0;
610
611 spin_lock_irqsave(&wdata->state.lock, flags);
612 wiiproto_req_rumble(wdata, value);
613 spin_unlock_irqrestore(&wdata->state.lock, flags);
614
615 return 0;
616}
617
618static int wiimote_input_open(struct input_dev *dev)
619{
620 struct wiimote_data *wdata = input_get_drvdata(dev);
621
622 return hid_hw_open(wdata->hdev);
623}
624
625static void wiimote_input_close(struct input_dev *dev)
626{
627 struct wiimote_data *wdata = input_get_drvdata(dev);
628
629 hid_hw_close(wdata->hdev);
630}
631
632static int wiimote_accel_open(struct input_dev *dev)
633{
634 struct wiimote_data *wdata = input_get_drvdata(dev);
635 int ret;
636 unsigned long flags;
637
638 ret = hid_hw_open(wdata->hdev);
639 if (ret)
640 return ret;
641
642 spin_lock_irqsave(&wdata->state.lock, flags);
643 wiiproto_req_accel(wdata, true);
644 spin_unlock_irqrestore(&wdata->state.lock, flags);
645
646 return 0;
647}
648
649static void wiimote_accel_close(struct input_dev *dev)
650{
651 struct wiimote_data *wdata = input_get_drvdata(dev);
652 unsigned long flags;
653
654 spin_lock_irqsave(&wdata->state.lock, flags);
655 wiiproto_req_accel(wdata, false);
656 spin_unlock_irqrestore(&wdata->state.lock, flags);
657
658 hid_hw_close(wdata->hdev);
659}
660
661static int wiimote_ir_open(struct input_dev *dev)
662{
663 struct wiimote_data *wdata = input_get_drvdata(dev);
664 int ret;
665
666 ret = hid_hw_open(wdata->hdev);
667 if (ret)
668 return ret;
669
670 ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
671 if (ret) {
672 hid_hw_close(wdata->hdev);
673 return ret;
674 }
675
676 return 0;
677}
678
679static void wiimote_ir_close(struct input_dev *dev)
680{
681 struct wiimote_data *wdata = input_get_drvdata(dev);
682
683 wiimote_init_ir(wdata, 0);
684 hid_hw_close(wdata->hdev);
685}
686
687static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
688{
689 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
690 !!(payload[0] & 0x01));
691 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_RIGHT],
692 !!(payload[0] & 0x02));
693 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_DOWN],
694 !!(payload[0] & 0x04));
695 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_UP],
696 !!(payload[0] & 0x08));
697 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_PLUS],
698 !!(payload[0] & 0x10));
699 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_TWO],
700 !!(payload[1] & 0x01));
701 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_ONE],
702 !!(payload[1] & 0x02));
703 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_B],
704 !!(payload[1] & 0x04));
705 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_A],
706 !!(payload[1] & 0x08));
707 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_MINUS],
708 !!(payload[1] & 0x10));
709 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_HOME],
710 !!(payload[1] & 0x80));
711 input_sync(wdata->input);
712}
713
714static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
715{
716 __u16 x, y, z;
717
718 if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
719 return;
720
721 /*
722 * payload is: BB BB XX YY ZZ
723 * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
724 * contain the upper 8 bits of each value. The lower 2 bits are
725 * contained in the buttons data BB BB.
726 * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
727 * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
728 * accel value and bit 6 is the second bit of the Z value.
729 * The first bit of Y and Z values is not available and always set to 0.
730 * 0x200 is returned on no movement.
731 */
732
733 x = payload[2] << 2;
734 y = payload[3] << 2;
735 z = payload[4] << 2;
736
737 x |= (payload[0] >> 5) & 0x3;
738 y |= (payload[1] >> 4) & 0x2;
739 z |= (payload[1] >> 5) & 0x2;
740
741 input_report_abs(wdata->accel, ABS_RX, x - 0x200);
742 input_report_abs(wdata->accel, ABS_RY, y - 0x200);
743 input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
744 input_sync(wdata->accel);
745}
746
747#define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
748 ABS_HAT0X, ABS_HAT0Y)
749#define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
750 ABS_HAT1X, ABS_HAT1Y)
751#define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
752 ABS_HAT2X, ABS_HAT2Y)
753#define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
754 ABS_HAT3X, ABS_HAT3Y)
755
756static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
757 bool packed, __u8 xid, __u8 yid)
758{
759 __u16 x, y;
760
761 if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
762 return;
763
764 /*
765 * Basic IR data is encoded into 3 bytes. The first two bytes are the
766 * upper 8 bit of the X/Y data, the 3rd byte contains the lower 2 bits
767 * of both.
768 * If data is packed, then the 3rd byte is put first and slightly
769 * reordered. This allows to interleave packed and non-packed data to
770 * have two IR sets in 5 bytes instead of 6.
771 * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
772 */
773
774 if (packed) {
775 x = ir[1] << 2;
776 y = ir[2] << 2;
777
778 x |= ir[0] & 0x3;
779 y |= (ir[0] >> 2) & 0x3;
780 } else {
781 x = ir[0] << 2;
782 y = ir[1] << 2;
783
784 x |= (ir[2] >> 4) & 0x3;
785 y |= (ir[2] >> 6) & 0x3;
786 }
787
788 input_report_abs(wdata->ir, xid, x);
789 input_report_abs(wdata->ir, yid, y);
790}
791
792static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
793{
794 handler_keys(wdata, payload);
795
796 /* on status reports the drm is reset so we need to resend the drm */
797 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
798
799 wiiext_event(wdata, payload[2] & 0x02);
800
801 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
802 wdata->state.cmd_battery = payload[5];
803 wiimote_cmd_complete(wdata);
804 }
805}
806
807static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
808{
809 __u16 offset = payload[3] << 8 | payload[4];
810 __u8 size = (payload[2] >> 4) + 1;
811 __u8 err = payload[2] & 0x0f;
812
813 handler_keys(wdata, payload);
814
815 if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
816 if (err)
817 size = 0;
818 else if (size > wdata->state.cmd_read_size)
819 size = wdata->state.cmd_read_size;
820
821 wdata->state.cmd_read_size = size;
822 if (wdata->state.cmd_read_buf)
823 memcpy(wdata->state.cmd_read_buf, &payload[5], size);
824 wiimote_cmd_complete(wdata);
825 }
826}
827
828static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
829{
830 __u8 err = payload[3];
831 __u8 cmd = payload[2];
832
833 handler_keys(wdata, payload);
834
835 if (wiimote_cmd_pending(wdata, cmd, 0)) {
836 wdata->state.cmd_err = err;
837 wiimote_cmd_complete(wdata);
838 } else if (err) {
839 hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
840 cmd);
841 }
842}
843
844static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
845{
846 handler_keys(wdata, payload);
847 handler_accel(wdata, payload);
848}
849
850static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
851{
852 handler_keys(wdata, payload);
853 wiiext_handle(wdata, &payload[2]);
854}
855
856static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
857{
858 handler_keys(wdata, payload);
859 handler_accel(wdata, payload);
860 ir_to_input0(wdata, &payload[5], false);
861 ir_to_input1(wdata, &payload[8], false);
862 ir_to_input2(wdata, &payload[11], false);
863 ir_to_input3(wdata, &payload[14], false);
864 input_sync(wdata->ir);
865}
866
867static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
868{
869 handler_keys(wdata, payload);
870 wiiext_handle(wdata, &payload[2]);
871}
872
873static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
874{
875 handler_keys(wdata, payload);
876 ir_to_input0(wdata, &payload[2], false);
877 ir_to_input1(wdata, &payload[4], true);
878 ir_to_input2(wdata, &payload[7], false);
879 ir_to_input3(wdata, &payload[9], true);
880 input_sync(wdata->ir);
881 wiiext_handle(wdata, &payload[12]);
882}
883
884static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
885{
886 handler_keys(wdata, payload);
887 handler_accel(wdata, payload);
888 wiiext_handle(wdata, &payload[5]);
889}
890
891static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
892{
893 handler_keys(wdata, payload);
894 handler_accel(wdata, payload);
895 ir_to_input0(wdata, &payload[5], false);
896 ir_to_input1(wdata, &payload[7], true);
897 ir_to_input2(wdata, &payload[10], false);
898 ir_to_input3(wdata, &payload[12], true);
899 input_sync(wdata->ir);
900 wiiext_handle(wdata, &payload[15]);
901}
902
903static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
904{
905 wiiext_handle(wdata, payload);
906}
907
908static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
909{
910 handler_keys(wdata, payload);
911
912 wdata->state.accel_split[0] = payload[2];
913 wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
914 wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
915
916 ir_to_input0(wdata, &payload[3], false);
917 ir_to_input1(wdata, &payload[12], false);
918 input_sync(wdata->ir);
919}
920
921static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
922{
923 __u8 buf[5];
924
925 handler_keys(wdata, payload);
926
927 wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
928 wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
929
930 buf[0] = 0;
931 buf[1] = 0;
932 buf[2] = wdata->state.accel_split[0];
933 buf[3] = payload[2];
934 buf[4] = wdata->state.accel_split[1];
935 handler_accel(wdata, buf);
936
937 ir_to_input2(wdata, &payload[3], false);
938 ir_to_input3(wdata, &payload[12], false);
939 input_sync(wdata->ir);
940}
941
942struct wiiproto_handler {
943 __u8 id;
944 size_t size;
945 void (*func)(struct wiimote_data *wdata, const __u8 *payload);
946};
947
948static struct wiiproto_handler handlers[] = {
949 { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
950 { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
951 { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
952 { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
953 { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
954 { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
955 { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
956 { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
957 { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
958 { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
959 { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
960 { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
961 { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
962 { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
963 { .id = 0 }
964};
965
966static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
967 u8 *raw_data, int size)
968{
969 struct wiimote_data *wdata = hid_get_drvdata(hdev);
970 struct wiiproto_handler *h;
971 int i;
972 unsigned long flags;
973 bool handled = false;
974
975 if (size < 1)
976 return -EINVAL;
977
978 spin_lock_irqsave(&wdata->state.lock, flags);
979
980 for (i = 0; handlers[i].id; ++i) {
981 h = &handlers[i];
982 if (h->id == raw_data[0] && h->size < size) {
983 h->func(wdata, &raw_data[1]);
984 handled = true;
985 }
986 }
987
988 if (!handled)
989 hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
990 size);
991
992 spin_unlock_irqrestore(&wdata->state.lock, flags);
993
994 return 0;
995}
996
997static void wiimote_leds_destroy(struct wiimote_data *wdata)
998{
999 int i;
1000 struct led_classdev *led;
1001
1002 for (i = 0; i < 4; ++i) {
1003 if (wdata->leds[i]) {
1004 led = wdata->leds[i];
1005 wdata->leds[i] = NULL;
1006 led_classdev_unregister(led);
1007 kfree(led);
1008 }
1009 }
1010}
1011
1012static int wiimote_leds_create(struct wiimote_data *wdata)
1013{
1014 int i, ret;
1015 struct device *dev = &wdata->hdev->dev;
1016 size_t namesz = strlen(dev_name(dev)) + 9;
1017 struct led_classdev *led;
1018 char *name;
1019
1020 for (i = 0; i < 4; ++i) {
1021 led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
1022 if (!led) {
1023 ret = -ENOMEM;
1024 goto err;
1025 }
1026 name = (void*)&led[1];
1027 snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
1028 led->name = name;
1029 led->brightness = 0;
1030 led->max_brightness = 1;
1031 led->brightness_get = wiimote_leds_get;
1032 led->brightness_set = wiimote_leds_set;
1033
1034 ret = led_classdev_register(dev, led);
1035 if (ret) {
1036 kfree(led);
1037 goto err;
1038 }
1039 wdata->leds[i] = led;
1040 }
1041
1042 return 0;
1043
1044err:
1045 wiimote_leds_destroy(wdata);
1046 return ret;
1047}
1048
1049static struct wiimote_data *wiimote_create(struct hid_device *hdev)
1050{
1051 struct wiimote_data *wdata;
1052 int i;
1053
1054 wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
1055 if (!wdata)
1056 return NULL;
1057
1058 wdata->input = input_allocate_device();
1059 if (!wdata->input)
1060 goto err;
1061
1062 wdata->hdev = hdev;
1063 hid_set_drvdata(hdev, wdata);
1064
1065 input_set_drvdata(wdata->input, wdata);
1066 wdata->input->open = wiimote_input_open;
1067 wdata->input->close = wiimote_input_close;
1068 wdata->input->dev.parent = &wdata->hdev->dev;
1069 wdata->input->id.bustype = wdata->hdev->bus;
1070 wdata->input->id.vendor = wdata->hdev->vendor;
1071 wdata->input->id.product = wdata->hdev->product;
1072 wdata->input->id.version = wdata->hdev->version;
1073 wdata->input->name = WIIMOTE_NAME;
1074
1075 set_bit(EV_KEY, wdata->input->evbit);
1076 for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
1077 set_bit(wiiproto_keymap[i], wdata->input->keybit);
1078
1079 set_bit(FF_RUMBLE, wdata->input->ffbit);
1080 if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play))
1081 goto err_input;
1082
1083 wdata->accel = input_allocate_device();
1084 if (!wdata->accel)
1085 goto err_input;
1086
1087 input_set_drvdata(wdata->accel, wdata);
1088 wdata->accel->open = wiimote_accel_open;
1089 wdata->accel->close = wiimote_accel_close;
1090 wdata->accel->dev.parent = &wdata->hdev->dev;
1091 wdata->accel->id.bustype = wdata->hdev->bus;
1092 wdata->accel->id.vendor = wdata->hdev->vendor;
1093 wdata->accel->id.product = wdata->hdev->product;
1094 wdata->accel->id.version = wdata->hdev->version;
1095 wdata->accel->name = WIIMOTE_NAME " Accelerometer";
1096
1097 set_bit(EV_ABS, wdata->accel->evbit);
1098 set_bit(ABS_RX, wdata->accel->absbit);
1099 set_bit(ABS_RY, wdata->accel->absbit);
1100 set_bit(ABS_RZ, wdata->accel->absbit);
1101 input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
1102 input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
1103 input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
1104
1105 wdata->ir = input_allocate_device();
1106 if (!wdata->ir)
1107 goto err_ir;
1108
1109 input_set_drvdata(wdata->ir, wdata);
1110 wdata->ir->open = wiimote_ir_open;
1111 wdata->ir->close = wiimote_ir_close;
1112 wdata->ir->dev.parent = &wdata->hdev->dev;
1113 wdata->ir->id.bustype = wdata->hdev->bus;
1114 wdata->ir->id.vendor = wdata->hdev->vendor;
1115 wdata->ir->id.product = wdata->hdev->product;
1116 wdata->ir->id.version = wdata->hdev->version;
1117 wdata->ir->name = WIIMOTE_NAME " IR";
1118
1119 set_bit(EV_ABS, wdata->ir->evbit);
1120 set_bit(ABS_HAT0X, wdata->ir->absbit);
1121 set_bit(ABS_HAT0Y, wdata->ir->absbit);
1122 set_bit(ABS_HAT1X, wdata->ir->absbit);
1123 set_bit(ABS_HAT1Y, wdata->ir->absbit);
1124 set_bit(ABS_HAT2X, wdata->ir->absbit);
1125 set_bit(ABS_HAT2Y, wdata->ir->absbit);
1126 set_bit(ABS_HAT3X, wdata->ir->absbit);
1127 set_bit(ABS_HAT3Y, wdata->ir->absbit);
1128 input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
1129 input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
1130 input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
1131 input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
1132 input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
1133 input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
1134 input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
1135 input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
1136
1137 spin_lock_init(&wdata->qlock);
1138 INIT_WORK(&wdata->worker, wiimote_worker);
1139
1140 spin_lock_init(&wdata->state.lock);
1141 init_completion(&wdata->state.ready);
1142 mutex_init(&wdata->state.sync);
1143 wdata->state.drm = WIIPROTO_REQ_DRM_K;
1144
1145 return wdata;
1146
1147err_ir:
1148 input_free_device(wdata->accel);
1149err_input:
1150 input_free_device(wdata->input);
1151err:
1152 kfree(wdata);
1153 return NULL;
1154}
1155
1156static void wiimote_destroy(struct wiimote_data *wdata)
1157{
1158 wiidebug_deinit(wdata);
1159 wiiext_deinit(wdata);
1160 wiimote_leds_destroy(wdata);
1161
1162 power_supply_unregister(&wdata->battery);
1163 input_unregister_device(wdata->accel);
1164 input_unregister_device(wdata->ir);
1165 input_unregister_device(wdata->input);
1166 cancel_work_sync(&wdata->worker);
1167 hid_hw_stop(wdata->hdev);
1168
1169 kfree(wdata);
1170}
1171
1172static int wiimote_hid_probe(struct hid_device *hdev,
1173 const struct hid_device_id *id)
1174{
1175 struct wiimote_data *wdata;
1176 int ret;
1177
1178 hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
1179
1180 wdata = wiimote_create(hdev);
1181 if (!wdata) {
1182 hid_err(hdev, "Can't alloc device\n");
1183 return -ENOMEM;
1184 }
1185
1186 ret = hid_parse(hdev);
1187 if (ret) {
1188 hid_err(hdev, "HID parse failed\n");
1189 goto err;
1190 }
1191
1192 ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
1193 if (ret) {
1194 hid_err(hdev, "HW start failed\n");
1195 goto err;
1196 }
1197
1198 ret = input_register_device(wdata->accel);
1199 if (ret) {
1200 hid_err(hdev, "Cannot register input device\n");
1201 goto err_stop;
1202 }
1203
1204 ret = input_register_device(wdata->ir);
1205 if (ret) {
1206 hid_err(hdev, "Cannot register input device\n");
1207 goto err_ir;
1208 }
1209
1210 ret = input_register_device(wdata->input);
1211 if (ret) {
1212 hid_err(hdev, "Cannot register input device\n");
1213 goto err_input;
1214 }
1215
1216 wdata->battery.properties = wiimote_battery_props;
1217 wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
1218 wdata->battery.get_property = wiimote_battery_get_property;
1219 wdata->battery.name = "wiimote_battery";
1220 wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
1221 wdata->battery.use_for_apm = 0;
1222
1223 ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
1224 if (ret) {
1225 hid_err(hdev, "Cannot register battery device\n");
1226 goto err_battery;
1227 }
1228
1229 ret = wiimote_leds_create(wdata);
1230 if (ret)
1231 goto err_free;
1232
1233 ret = wiiext_init(wdata);
1234 if (ret)
1235 goto err_free;
1236
1237 ret = wiidebug_init(wdata);
1238 if (ret)
1239 goto err_free;
1240
1241 hid_info(hdev, "New device registered\n");
1242
1243 /* by default set led1 after device initialization */
1244 spin_lock_irq(&wdata->state.lock);
1245 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
1246 spin_unlock_irq(&wdata->state.lock);
1247
1248 return 0;
1249
1250err_free:
1251 wiimote_destroy(wdata);
1252 return ret;
1253
1254err_battery:
1255 input_unregister_device(wdata->input);
1256 wdata->input = NULL;
1257err_input:
1258 input_unregister_device(wdata->ir);
1259 wdata->ir = NULL;
1260err_ir:
1261 input_unregister_device(wdata->accel);
1262 wdata->accel = NULL;
1263err_stop:
1264 hid_hw_stop(hdev);
1265err:
1266 input_free_device(wdata->ir);
1267 input_free_device(wdata->accel);
1268 input_free_device(wdata->input);
1269 kfree(wdata);
1270 return ret;
1271}
1272
1273static void wiimote_hid_remove(struct hid_device *hdev)
1274{
1275 struct wiimote_data *wdata = hid_get_drvdata(hdev);
1276
1277 hid_info(hdev, "Device removed\n");
1278 wiimote_destroy(wdata);
1279}
1280
1281static const struct hid_device_id wiimote_hid_devices[] = {
1282 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1283 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1284 { }
1285};
1286MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1287
1288static struct hid_driver wiimote_hid_driver = {
1289 .name = "wiimote",
1290 .id_table = wiimote_hid_devices,
1291 .probe = wiimote_hid_probe,
1292 .remove = wiimote_hid_remove,
1293 .raw_event = wiimote_hid_event,
1294};
1295
1296static int __init wiimote_init(void)
1297{
1298 int ret;
1299
1300 ret = hid_register_driver(&wiimote_hid_driver);
1301 if (ret)
1302 pr_err("Can't register wiimote hid driver\n");
1303
1304 return ret;
1305}
1306
1307static void __exit wiimote_exit(void)
1308{
1309 hid_unregister_driver(&wiimote_hid_driver);
1310}
1311
1312module_init(wiimote_init);
1313module_exit(wiimote_exit);
1314MODULE_LICENSE("GPL");
1315MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1316MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-12 21:34:47 -0500