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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 POWER_SUPPLY_PROP_SCOPE,
57};
58
59static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
60 size_t count)
61{
62 __u8 *buf;
63 ssize_t ret;
64
65 if (!hdev->hid_output_raw_report)
66 return -ENODEV;
67
68 buf = kmemdup(buffer, count, GFP_KERNEL);
69 if (!buf)
70 return -ENOMEM;
71
72 ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
73
74 kfree(buf);
75 return ret;
76}
77
78static void wiimote_worker(struct work_struct *work)
79{
80 struct wiimote_data *wdata = container_of(work, struct wiimote_data,
81 worker);
82 unsigned long flags;
83
84 spin_lock_irqsave(&wdata->qlock, flags);
85
86 while (wdata->head != wdata->tail) {
87 spin_unlock_irqrestore(&wdata->qlock, flags);
88 wiimote_hid_send(wdata->hdev, wdata->outq[wdata->tail].data,
89 wdata->outq[wdata->tail].size);
90 spin_lock_irqsave(&wdata->qlock, flags);
91
92 wdata->tail = (wdata->tail + 1) % WIIMOTE_BUFSIZE;
93 }
94
95 spin_unlock_irqrestore(&wdata->qlock, flags);
96}
97
98static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
99 size_t count)
100{
101 unsigned long flags;
102 __u8 newhead;
103
104 if (count > HID_MAX_BUFFER_SIZE) {
105 hid_warn(wdata->hdev, "Sending too large output report\n");
106 return;
107 }
108
109 /*
110 * Copy new request into our output queue and check whether the
111 * queue is full. If it is full, discard this request.
112 * If it is empty we need to start a new worker that will
113 * send out the buffer to the hid device.
114 * If the queue is not empty, then there must be a worker
115 * that is currently sending out our buffer and this worker
116 * will reschedule itself until the queue is empty.
117 */
118
119 spin_lock_irqsave(&wdata->qlock, flags);
120
121 memcpy(wdata->outq[wdata->head].data, buffer, count);
122 wdata->outq[wdata->head].size = count;
123 newhead = (wdata->head + 1) % WIIMOTE_BUFSIZE;
124
125 if (wdata->head == wdata->tail) {
126 wdata->head = newhead;
127 schedule_work(&wdata->worker);
128 } else if (newhead != wdata->tail) {
129 wdata->head = newhead;
130 } else {
131 hid_warn(wdata->hdev, "Output queue is full");
132 }
133
134 spin_unlock_irqrestore(&wdata->qlock, flags);
135}
136
137/*
138 * This sets the rumble bit on the given output report if rumble is
139 * currently enabled.
140 * \cmd1 must point to the second byte in the output report => &cmd[1]
141 * This must be called on nearly every output report before passing it
142 * into the output queue!
143 */
144static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
145{
146 if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
147 *cmd1 |= 0x01;
148}
149
150static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
151{
152 __u8 cmd[2];
153
154 rumble = !!rumble;
155 if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
156 return;
157
158 if (rumble)
159 wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
160 else
161 wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
162
163 cmd[0] = WIIPROTO_REQ_RUMBLE;
164 cmd[1] = 0;
165
166 wiiproto_keep_rumble(wdata, &cmd[1]);
167 wiimote_queue(wdata, cmd, sizeof(cmd));
168}
169
170static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
171{
172 __u8 cmd[2];
173
174 leds &= WIIPROTO_FLAGS_LEDS;
175 if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
176 return;
177 wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
178
179 cmd[0] = WIIPROTO_REQ_LED;
180 cmd[1] = 0;
181
182 if (leds & WIIPROTO_FLAG_LED1)
183 cmd[1] |= 0x10;
184 if (leds & WIIPROTO_FLAG_LED2)
185 cmd[1] |= 0x20;
186 if (leds & WIIPROTO_FLAG_LED3)
187 cmd[1] |= 0x40;
188 if (leds & WIIPROTO_FLAG_LED4)
189 cmd[1] |= 0x80;
190
191 wiiproto_keep_rumble(wdata, &cmd[1]);
192 wiimote_queue(wdata, cmd, sizeof(cmd));
193}
194
195/*
196 * Check what peripherals of the wiimote are currently
197 * active and select a proper DRM that supports all of
198 * the requested data inputs.
199 */
200static __u8 select_drm(struct wiimote_data *wdata)
201{
202 __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
203 bool ext = wiiext_active(wdata);
204
205 if (ir == WIIPROTO_FLAG_IR_BASIC) {
206 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
207 return WIIPROTO_REQ_DRM_KAIE;
208 else
209 return WIIPROTO_REQ_DRM_KIE;
210 } else if (ir == WIIPROTO_FLAG_IR_EXT) {
211 return WIIPROTO_REQ_DRM_KAI;
212 } else if (ir == WIIPROTO_FLAG_IR_FULL) {
213 return WIIPROTO_REQ_DRM_SKAI1;
214 } else {
215 if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
216 if (ext)
217 return WIIPROTO_REQ_DRM_KAE;
218 else
219 return WIIPROTO_REQ_DRM_KA;
220 } else {
221 if (ext)
222 return WIIPROTO_REQ_DRM_KE;
223 else
224 return WIIPROTO_REQ_DRM_K;
225 }
226 }
227}
228
229void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
230{
231 __u8 cmd[3];
232
233 if (drm == WIIPROTO_REQ_NULL)
234 drm = select_drm(wdata);
235
236 cmd[0] = WIIPROTO_REQ_DRM;
237 cmd[1] = 0;
238 cmd[2] = drm;
239
240 wdata->state.drm = drm;
241 wiiproto_keep_rumble(wdata, &cmd[1]);
242 wiimote_queue(wdata, cmd, sizeof(cmd));
243}
244
245static void wiiproto_req_status(struct wiimote_data *wdata)
246{
247 __u8 cmd[2];
248
249 cmd[0] = WIIPROTO_REQ_SREQ;
250 cmd[1] = 0;
251
252 wiiproto_keep_rumble(wdata, &cmd[1]);
253 wiimote_queue(wdata, cmd, sizeof(cmd));
254}
255
256static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
257{
258 accel = !!accel;
259 if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
260 return;
261
262 if (accel)
263 wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
264 else
265 wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
266
267 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
268}
269
270static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
271{
272 __u8 cmd[2];
273
274 cmd[0] = WIIPROTO_REQ_IR1;
275 cmd[1] = flags;
276
277 wiiproto_keep_rumble(wdata, &cmd[1]);
278 wiimote_queue(wdata, cmd, sizeof(cmd));
279}
280
281static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
282{
283 __u8 cmd[2];
284
285 cmd[0] = WIIPROTO_REQ_IR2;
286 cmd[1] = flags;
287
288 wiiproto_keep_rumble(wdata, &cmd[1]);
289 wiimote_queue(wdata, cmd, sizeof(cmd));
290}
291
292#define wiiproto_req_wreg(wdata, os, buf, sz) \
293 wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
294
295#define wiiproto_req_weeprom(wdata, os, buf, sz) \
296 wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
297
298static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
299 __u32 offset, const __u8 *buf, __u8 size)
300{
301 __u8 cmd[22];
302
303 if (size > 16 || size == 0) {
304 hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
305 return;
306 }
307
308 memset(cmd, 0, sizeof(cmd));
309 cmd[0] = WIIPROTO_REQ_WMEM;
310 cmd[2] = (offset >> 16) & 0xff;
311 cmd[3] = (offset >> 8) & 0xff;
312 cmd[4] = offset & 0xff;
313 cmd[5] = size;
314 memcpy(&cmd[6], buf, size);
315
316 if (!eeprom)
317 cmd[1] |= 0x04;
318
319 wiiproto_keep_rumble(wdata, &cmd[1]);
320 wiimote_queue(wdata, cmd, sizeof(cmd));
321}
322
323void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
324 __u16 size)
325{
326 __u8 cmd[7];
327
328 if (size == 0) {
329 hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
330 return;
331 }
332
333 cmd[0] = WIIPROTO_REQ_RMEM;
334 cmd[1] = 0;
335 cmd[2] = (offset >> 16) & 0xff;
336 cmd[3] = (offset >> 8) & 0xff;
337 cmd[4] = offset & 0xff;
338 cmd[5] = (size >> 8) & 0xff;
339 cmd[6] = size & 0xff;
340
341 if (!eeprom)
342 cmd[1] |= 0x04;
343
344 wiiproto_keep_rumble(wdata, &cmd[1]);
345 wiimote_queue(wdata, cmd, sizeof(cmd));
346}
347
348/* requries the cmd-mutex to be held */
349int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
350 const __u8 *wmem, __u8 size)
351{
352 unsigned long flags;
353 int ret;
354
355 spin_lock_irqsave(&wdata->state.lock, flags);
356 wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
357 wiiproto_req_wreg(wdata, offset, wmem, size);
358 spin_unlock_irqrestore(&wdata->state.lock, flags);
359
360 ret = wiimote_cmd_wait(wdata);
361 if (!ret && wdata->state.cmd_err)
362 ret = -EIO;
363
364 return ret;
365}
366
367/* requries the cmd-mutex to be held */
368ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
369 __u8 size)
370{
371 unsigned long flags;
372 ssize_t ret;
373
374 spin_lock_irqsave(&wdata->state.lock, flags);
375 wdata->state.cmd_read_size = size;
376 wdata->state.cmd_read_buf = rmem;
377 wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
378 wiiproto_req_rreg(wdata, offset, size);
379 spin_unlock_irqrestore(&wdata->state.lock, flags);
380
381 ret = wiimote_cmd_wait(wdata);
382
383 spin_lock_irqsave(&wdata->state.lock, flags);
384 wdata->state.cmd_read_buf = NULL;
385 spin_unlock_irqrestore(&wdata->state.lock, flags);
386
387 if (!ret) {
388 if (wdata->state.cmd_read_size == 0)
389 ret = -EIO;
390 else
391 ret = wdata->state.cmd_read_size;
392 }
393
394 return ret;
395}
396
397static int wiimote_battery_get_property(struct power_supply *psy,
398 enum power_supply_property psp,
399 union power_supply_propval *val)
400{
401 struct wiimote_data *wdata = container_of(psy,
402 struct wiimote_data, battery);
403 int ret = 0, state;
404 unsigned long flags;
405
406 if (psp == POWER_SUPPLY_PROP_SCOPE) {
407 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
408 return 0;
409 }
410
411 ret = wiimote_cmd_acquire(wdata);
412 if (ret)
413 return ret;
414
415 spin_lock_irqsave(&wdata->state.lock, flags);
416 wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
417 wiiproto_req_status(wdata);
418 spin_unlock_irqrestore(&wdata->state.lock, flags);
419
420 ret = wiimote_cmd_wait(wdata);
421 state = wdata->state.cmd_battery;
422 wiimote_cmd_release(wdata);
423
424 if (ret)
425 return ret;
426
427 switch (psp) {
428 case POWER_SUPPLY_PROP_CAPACITY:
429 val->intval = state * 100 / 255;
430 break;
431 default:
432 ret = -EINVAL;
433 break;
434 }
435
436 return ret;
437}
438
439static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
440{
441 int ret;
442 unsigned long flags;
443 __u8 format = 0;
444 static const __u8 data_enable[] = { 0x01 };
445 static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
446 0x00, 0xaa, 0x00, 0x64 };
447 static const __u8 data_sens2[] = { 0x63, 0x03 };
448 static const __u8 data_fin[] = { 0x08 };
449
450 spin_lock_irqsave(&wdata->state.lock, flags);
451
452 if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
453 spin_unlock_irqrestore(&wdata->state.lock, flags);
454 return 0;
455 }
456
457 if (mode == 0) {
458 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
459 wiiproto_req_ir1(wdata, 0);
460 wiiproto_req_ir2(wdata, 0);
461 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
462 spin_unlock_irqrestore(&wdata->state.lock, flags);
463 return 0;
464 }
465
466 spin_unlock_irqrestore(&wdata->state.lock, flags);
467
468 ret = wiimote_cmd_acquire(wdata);
469 if (ret)
470 return ret;
471
472 /* send PIXEL CLOCK ENABLE cmd first */
473 spin_lock_irqsave(&wdata->state.lock, flags);
474 wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
475 wiiproto_req_ir1(wdata, 0x06);
476 spin_unlock_irqrestore(&wdata->state.lock, flags);
477
478 ret = wiimote_cmd_wait(wdata);
479 if (ret)
480 goto unlock;
481 if (wdata->state.cmd_err) {
482 ret = -EIO;
483 goto unlock;
484 }
485
486 /* enable IR LOGIC */
487 spin_lock_irqsave(&wdata->state.lock, flags);
488 wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
489 wiiproto_req_ir2(wdata, 0x06);
490 spin_unlock_irqrestore(&wdata->state.lock, flags);
491
492 ret = wiimote_cmd_wait(wdata);
493 if (ret)
494 goto unlock;
495 if (wdata->state.cmd_err) {
496 ret = -EIO;
497 goto unlock;
498 }
499
500 /* enable IR cam but do not make it send data, yet */
501 ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
502 sizeof(data_enable));
503 if (ret)
504 goto unlock;
505
506 /* write first sensitivity block */
507 ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
508 sizeof(data_sens1));
509 if (ret)
510 goto unlock;
511
512 /* write second sensitivity block */
513 ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
514 sizeof(data_sens2));
515 if (ret)
516 goto unlock;
517
518 /* put IR cam into desired state */
519 switch (mode) {
520 case WIIPROTO_FLAG_IR_FULL:
521 format = 5;
522 break;
523 case WIIPROTO_FLAG_IR_EXT:
524 format = 3;
525 break;
526 case WIIPROTO_FLAG_IR_BASIC:
527 format = 1;
528 break;
529 }
530 ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
531 if (ret)
532 goto unlock;
533
534 /* make IR cam send data */
535 ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
536 if (ret)
537 goto unlock;
538
539 /* request new DRM mode compatible to IR mode */
540 spin_lock_irqsave(&wdata->state.lock, flags);
541 wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
542 wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
543 wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
544 spin_unlock_irqrestore(&wdata->state.lock, flags);
545
546unlock:
547 wiimote_cmd_release(wdata);
548 return ret;
549}
550
551static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
552{
553 struct wiimote_data *wdata;
554 struct device *dev = led_dev->dev->parent;
555 int i;
556 unsigned long flags;
557 bool value = false;
558
559 wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
560
561 for (i = 0; i < 4; ++i) {
562 if (wdata->leds[i] == led_dev) {
563 spin_lock_irqsave(&wdata->state.lock, flags);
564 value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
565 spin_unlock_irqrestore(&wdata->state.lock, flags);
566 break;
567 }
568 }
569
570 return value ? LED_FULL : LED_OFF;
571}
572
573static void wiimote_leds_set(struct led_classdev *led_dev,
574 enum led_brightness value)
575{
576 struct wiimote_data *wdata;
577 struct device *dev = led_dev->dev->parent;
578 int i;
579 unsigned long flags;
580 __u8 state, flag;
581
582 wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
583
584 for (i = 0; i < 4; ++i) {
585 if (wdata->leds[i] == led_dev) {
586 flag = WIIPROTO_FLAG_LED(i + 1);
587 spin_lock_irqsave(&wdata->state.lock, flags);
588 state = wdata->state.flags;
589 if (value == LED_OFF)
590 wiiproto_req_leds(wdata, state & ~flag);
591 else
592 wiiproto_req_leds(wdata, state | flag);
593 spin_unlock_irqrestore(&wdata->state.lock, flags);
594 break;
595 }
596 }
597}
598
599static int wiimote_ff_play(struct input_dev *dev, void *data,
600 struct ff_effect *eff)
601{
602 struct wiimote_data *wdata = input_get_drvdata(dev);
603 __u8 value;
604 unsigned long flags;
605
606 /*
607 * The wiimote supports only a single rumble motor so if any magnitude
608 * is set to non-zero then we start the rumble motor. If both are set to
609 * zero, we stop the rumble motor.
610 */
611
612 if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
613 value = 1;
614 else
615 value = 0;
616
617 spin_lock_irqsave(&wdata->state.lock, flags);
618 wiiproto_req_rumble(wdata, value);
619 spin_unlock_irqrestore(&wdata->state.lock, flags);
620
621 return 0;
622}
623
624static int wiimote_input_open(struct input_dev *dev)
625{
626 struct wiimote_data *wdata = input_get_drvdata(dev);
627
628 return hid_hw_open(wdata->hdev);
629}
630
631static void wiimote_input_close(struct input_dev *dev)
632{
633 struct wiimote_data *wdata = input_get_drvdata(dev);
634
635 hid_hw_close(wdata->hdev);
636}
637
638static int wiimote_accel_open(struct input_dev *dev)
639{
640 struct wiimote_data *wdata = input_get_drvdata(dev);
641 int ret;
642 unsigned long flags;
643
644 ret = hid_hw_open(wdata->hdev);
645 if (ret)
646 return ret;
647
648 spin_lock_irqsave(&wdata->state.lock, flags);
649 wiiproto_req_accel(wdata, true);
650 spin_unlock_irqrestore(&wdata->state.lock, flags);
651
652 return 0;
653}
654
655static void wiimote_accel_close(struct input_dev *dev)
656{
657 struct wiimote_data *wdata = input_get_drvdata(dev);
658 unsigned long flags;
659
660 spin_lock_irqsave(&wdata->state.lock, flags);
661 wiiproto_req_accel(wdata, false);
662 spin_unlock_irqrestore(&wdata->state.lock, flags);
663
664 hid_hw_close(wdata->hdev);
665}
666
667static int wiimote_ir_open(struct input_dev *dev)
668{
669 struct wiimote_data *wdata = input_get_drvdata(dev);
670 int ret;
671
672 ret = hid_hw_open(wdata->hdev);
673 if (ret)
674 return ret;
675
676 ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
677 if (ret) {
678 hid_hw_close(wdata->hdev);
679 return ret;
680 }
681
682 return 0;
683}
684
685static void wiimote_ir_close(struct input_dev *dev)
686{
687 struct wiimote_data *wdata = input_get_drvdata(dev);
688
689 wiimote_init_ir(wdata, 0);
690 hid_hw_close(wdata->hdev);
691}
692
693static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
694{
695 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
696 !!(payload[0] & 0x01));
697 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_RIGHT],
698 !!(payload[0] & 0x02));
699 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_DOWN],
700 !!(payload[0] & 0x04));
701 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_UP],
702 !!(payload[0] & 0x08));
703 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_PLUS],
704 !!(payload[0] & 0x10));
705 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_TWO],
706 !!(payload[1] & 0x01));
707 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_ONE],
708 !!(payload[1] & 0x02));
709 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_B],
710 !!(payload[1] & 0x04));
711 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_A],
712 !!(payload[1] & 0x08));
713 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_MINUS],
714 !!(payload[1] & 0x10));
715 input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_HOME],
716 !!(payload[1] & 0x80));
717 input_sync(wdata->input);
718}
719
720static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
721{
722 __u16 x, y, z;
723
724 if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
725 return;
726
727 /*
728 * payload is: BB BB XX YY ZZ
729 * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
730 * contain the upper 8 bits of each value. The lower 2 bits are
731 * contained in the buttons data BB BB.
732 * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
733 * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
734 * accel value and bit 6 is the second bit of the Z value.
735 * The first bit of Y and Z values is not available and always set to 0.
736 * 0x200 is returned on no movement.
737 */
738
739 x = payload[2] << 2;
740 y = payload[3] << 2;
741 z = payload[4] << 2;
742
743 x |= (payload[0] >> 5) & 0x3;
744 y |= (payload[1] >> 4) & 0x2;
745 z |= (payload[1] >> 5) & 0x2;
746
747 input_report_abs(wdata->accel, ABS_RX, x - 0x200);
748 input_report_abs(wdata->accel, ABS_RY, y - 0x200);
749 input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
750 input_sync(wdata->accel);
751}
752
753#define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
754 ABS_HAT0X, ABS_HAT0Y)
755#define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
756 ABS_HAT1X, ABS_HAT1Y)
757#define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
758 ABS_HAT2X, ABS_HAT2Y)
759#define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
760 ABS_HAT3X, ABS_HAT3Y)
761
762static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
763 bool packed, __u8 xid, __u8 yid)
764{
765 __u16 x, y;
766
767 if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
768 return;
769
770 /*
771 * Basic IR data is encoded into 3 bytes. The first two bytes are the
772 * lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
773 * of both.
774 * If data is packed, then the 3rd byte is put first and slightly
775 * reordered. This allows to interleave packed and non-packed data to
776 * have two IR sets in 5 bytes instead of 6.
777 * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
778 */
779
780 if (packed) {
781 x = ir[1] | ((ir[0] & 0x03) << 8);
782 y = ir[2] | ((ir[0] & 0x0c) << 6);
783 } else {
784 x = ir[0] | ((ir[2] & 0x30) << 4);
785 y = ir[1] | ((ir[2] & 0xc0) << 2);
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 power_supply_powers(&wdata->battery, &hdev->dev);
1230
1231 ret = wiimote_leds_create(wdata);
1232 if (ret)
1233 goto err_free;
1234
1235 ret = wiiext_init(wdata);
1236 if (ret)
1237 goto err_free;
1238
1239 ret = wiidebug_init(wdata);
1240 if (ret)
1241 goto err_free;
1242
1243 hid_info(hdev, "New device registered\n");
1244
1245 /* by default set led1 after device initialization */
1246 spin_lock_irq(&wdata->state.lock);
1247 wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
1248 spin_unlock_irq(&wdata->state.lock);
1249
1250 return 0;
1251
1252err_free:
1253 wiimote_destroy(wdata);
1254 return ret;
1255
1256err_battery:
1257 input_unregister_device(wdata->input);
1258 wdata->input = NULL;
1259err_input:
1260 input_unregister_device(wdata->ir);
1261 wdata->ir = NULL;
1262err_ir:
1263 input_unregister_device(wdata->accel);
1264 wdata->accel = NULL;
1265err_stop:
1266 hid_hw_stop(hdev);
1267err:
1268 input_free_device(wdata->ir);
1269 input_free_device(wdata->accel);
1270 input_free_device(wdata->input);
1271 kfree(wdata);
1272 return ret;
1273}
1274
1275static void wiimote_hid_remove(struct hid_device *hdev)
1276{
1277 struct wiimote_data *wdata = hid_get_drvdata(hdev);
1278
1279 hid_info(hdev, "Device removed\n");
1280 wiimote_destroy(wdata);
1281}
1282
1283static const struct hid_device_id wiimote_hid_devices[] = {
1284 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
1285 USB_DEVICE_ID_NINTENDO_WIIMOTE) },
1286 { }
1287};
1288MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
1289
1290static struct hid_driver wiimote_hid_driver = {
1291 .name = "wiimote",
1292 .id_table = wiimote_hid_devices,
1293 .probe = wiimote_hid_probe,
1294 .remove = wiimote_hid_remove,
1295 .raw_event = wiimote_hid_event,
1296};
1297
1298static int __init wiimote_init(void)
1299{
1300 int ret;
1301
1302 ret = hid_register_driver(&wiimote_hid_driver);
1303 if (ret)
1304 pr_err("Can't register wiimote hid driver\n");
1305
1306 return ret;
1307}
1308
1309static void __exit wiimote_exit(void)
1310{
1311 hid_unregister_driver(&wiimote_hid_driver);
1312}
1313
1314module_init(wiimote_init);
1315module_exit(wiimote_exit);
1316MODULE_LICENSE("GPL");
1317MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
1318MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");