1	// SPDX-License-Identifier: GPL-2.0-or-later
2	/*
3	* Device Modules for Nintendo Wii / Wii U HID Driver
4	* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
5	*/
6
7	/*
8	*/
9
10	/*
11	* Wiimote Modules
12	* Nintendo devices provide different peripherals and many new devices lack
13	* initial features like the IR camera. Therefore, each peripheral device is
14	* implemented as an independent module and we probe on each device only the
15	* modules for the hardware that really is available.
16	*
17	* Module registration is sequential. Unregistration is done in reverse order.
18	* After device detection, the needed modules are loaded. Users can trigger
19	* re-detection which causes all modules to be unloaded and then reload the
20	* modules for the new detected device.
21	*
22	* wdata->input is a shared input device. It is always initialized prior to
23	* module registration. If at least one registered module is marked as
24	* WIIMOD_FLAG_INPUT, then the input device will get registered after all
25	* modules were registered.
26	* Please note that it is unregistered _before_ the "remove" callbacks are
27	* called. This guarantees that no input interaction is done, anymore. However,
28	* the wiimote core keeps a reference to the input device so it is freed only
29	* after all modules were removed. It is safe to send events to unregistered
30	* input devices.
31	*/
32
33	#include <linux/device.h>
34	#include <linux/hid.h>
35	#include <linux/input.h>
36	#include <linux/spinlock.h>
37	#include "hid-wiimote.h"
38
39	/*
40	* Keys
41	* The initial Wii Remote provided a bunch of buttons that are reported as
42	* part of the core protocol. Many later devices dropped these and report
43	* invalid data in the core button reports. Load this only on devices which
44	* correctly send button reports.
45	* It uses the shared input device.
46	*/
47
48	static const __u16 wiimod_keys_map[] = {
49	KEY_LEFT, /* WIIPROTO_KEY_LEFT */
50	KEY_RIGHT, /* WIIPROTO_KEY_RIGHT */
51	KEY_UP, /* WIIPROTO_KEY_UP */
52	KEY_DOWN, /* WIIPROTO_KEY_DOWN */
53	KEY_NEXT, /* WIIPROTO_KEY_PLUS */
54	KEY_PREVIOUS, /* WIIPROTO_KEY_MINUS */
55	BTN_1, /* WIIPROTO_KEY_ONE */
56	BTN_2, /* WIIPROTO_KEY_TWO */
57	BTN_A, /* WIIPROTO_KEY_A */
58	BTN_B, /* WIIPROTO_KEY_B */
59	BTN_MODE, /* WIIPROTO_KEY_HOME */
60	};
61
62	static void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
63	{
64	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_LEFT],
65	value: !!(keys[0] & 0x01));
66	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_RIGHT],
67	value: !!(keys[0] & 0x02));
68	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_DOWN],
69	value: !!(keys[0] & 0x04));
70	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_UP],
71	value: !!(keys[0] & 0x08));
72	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_PLUS],
73	value: !!(keys[0] & 0x10));
74	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_TWO],
75	value: !!(keys[1] & 0x01));
76	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_ONE],
77	value: !!(keys[1] & 0x02));
78	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_B],
79	value: !!(keys[1] & 0x04));
80	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_A],
81	value: !!(keys[1] & 0x08));
82	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_MINUS],
83	value: !!(keys[1] & 0x10));
84	input_report_key(dev: wdata->input, code: wiimod_keys_map[WIIPROTO_KEY_HOME],
85	value: !!(keys[1] & 0x80));
86	input_sync(dev: wdata->input);
87	}
88
89	static int wiimod_keys_probe(const struct wiimod_ops *ops,
90	struct wiimote_data *wdata)
91	{
92	unsigned int i;
93
94	set_bit(EV_KEY, addr: wdata->input->evbit);
95	for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
96	set_bit(nr: wiimod_keys_map[i], addr: wdata->input->keybit);
97
98	return 0;
99	}
100
101	static const struct wiimod_ops wiimod_keys = {
102	.flags = WIIMOD_FLAG_INPUT,
103	.arg = 0,
104	.probe = wiimod_keys_probe,
105	.remove = NULL,
106	.in_keys = wiimod_keys_in_keys,
107	};
108
109	/*
110	* Rumble
111	* Nearly all devices provide a rumble feature. A small motor for
112	* force-feedback effects. We provide an FF_RUMBLE memless ff device on the
113	* shared input device if this module is loaded.
114	* The rumble motor is controlled via a flag on almost every output report so
115	* the wiimote core handles the rumble flag. But if a device doesn't provide
116	* the rumble motor, this flag shouldn't be set.
117	*/
118
119	/* used by wiimod_rumble and wiipro_rumble */
120	static void wiimod_rumble_worker(struct work_struct *work)
121	{
122	struct wiimote_data *wdata = container_of(work, struct wiimote_data,
123	rumble_worker);
124
125	spin_lock_irq(lock: &wdata->state.lock);
126	wiiproto_req_rumble(wdata, rumble: wdata->state.cache_rumble);
127	spin_unlock_irq(lock: &wdata->state.lock);
128	}
129
130	static int wiimod_rumble_play(struct input_dev *dev, void *data,
131	struct ff_effect *eff)
132	{
133	struct wiimote_data *wdata = input_get_drvdata(dev);
134	__u8 value;
135
136	/*
137	* The wiimote supports only a single rumble motor so if any magnitude
138	* is set to non-zero then we start the rumble motor. If both are set to
139	* zero, we stop the rumble motor.
140	*/
141
142	if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
143	value = 1;
144	else
145	value = 0;
146
147	/* Locking state.lock here might deadlock with input_event() calls.
148	* schedule_work acts as barrier. Merging multiple changes is fine. */
149	wdata->state.cache_rumble = value;
150	schedule_work(work: &wdata->rumble_worker);
151
152	return 0;
153	}
154
155	static int wiimod_rumble_probe(const struct wiimod_ops *ops,
156	struct wiimote_data *wdata)
157	{
158	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
159
160	set_bit(FF_RUMBLE, addr: wdata->input->ffbit);
161	if (input_ff_create_memless(dev: wdata->input, NULL, play_effect: wiimod_rumble_play))
162	return -ENOMEM;
163
164	return 0;
165	}
166
167	static void wiimod_rumble_remove(const struct wiimod_ops *ops,
168	struct wiimote_data *wdata)
169	{
170	unsigned long flags;
171
172	cancel_work_sync(work: &wdata->rumble_worker);
173
174	spin_lock_irqsave(&wdata->state.lock, flags);
175	wiiproto_req_rumble(wdata, rumble: 0);
176	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
177	}
178
179	static const struct wiimod_ops wiimod_rumble = {
180	.flags = WIIMOD_FLAG_INPUT,
181	.arg = 0,
182	.probe = wiimod_rumble_probe,
183	.remove = wiimod_rumble_remove,
184	};
185
186	/*
187	* Battery
188	* 1 byte of battery capacity information is sent along every protocol status
189	* report. The wiimote core caches it but we try to update it on every
190	* user-space request.
191	* This is supported by nearly every device so it's almost always enabled.
192	*/
193
194	static enum power_supply_property wiimod_battery_props[] = {
195	POWER_SUPPLY_PROP_CAPACITY,
196	POWER_SUPPLY_PROP_SCOPE,
197	};
198
199	static int wiimod_battery_get_property(struct power_supply *psy,
200	enum power_supply_property psp,
201	union power_supply_propval *val)
202	{
203	struct wiimote_data *wdata = power_supply_get_drvdata(psy);
204	int ret = 0, state;
205	unsigned long flags;
206
207	if (psp == POWER_SUPPLY_PROP_SCOPE) {
208	val->intval = POWER_SUPPLY_SCOPE_DEVICE;
209	return 0;
210	} else if (psp != POWER_SUPPLY_PROP_CAPACITY) {
211	return -EINVAL;
212	}
213
214	ret = wiimote_cmd_acquire(wdata);
215	if (ret)
216	return ret;
217
218	spin_lock_irqsave(&wdata->state.lock, flags);
219	wiimote_cmd_set(wdata, cmd: WIIPROTO_REQ_SREQ, opt: 0);
220	wiiproto_req_status(wdata);
221	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
222
223	wiimote_cmd_wait(wdata);
224	wiimote_cmd_release(wdata);
225
226	spin_lock_irqsave(&wdata->state.lock, flags);
227	state = wdata->state.cmd_battery;
228	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
229
230	val->intval = state * 100 / 255;
231	return ret;
232	}
233
234	static int wiimod_battery_probe(const struct wiimod_ops *ops,
235	struct wiimote_data *wdata)
236	{
237	struct power_supply_config psy_cfg = { .drv_data = wdata, };
238	int ret;
239
240	wdata->battery_desc.properties = wiimod_battery_props;
241	wdata->battery_desc.num_properties = ARRAY_SIZE(wiimod_battery_props);
242	wdata->battery_desc.get_property = wiimod_battery_get_property;
243	wdata->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
244	wdata->battery_desc.use_for_apm = 0;
245	wdata->battery_desc.name = kasprintf(GFP_KERNEL, fmt: "wiimote_battery_%s",
246	wdata->hdev->uniq);
247	if (!wdata->battery_desc.name)
248	return -ENOMEM;
249
250	wdata->battery = power_supply_register(parent: &wdata->hdev->dev,
251	desc: &wdata->battery_desc,
252	cfg: &psy_cfg);
253	if (IS_ERR(ptr: wdata->battery)) {
254	hid_err(wdata->hdev, "cannot register battery device\n");
255	ret = PTR_ERR(ptr: wdata->battery);
256	goto err_free;
257	}
258
259	power_supply_powers(psy: wdata->battery, dev: &wdata->hdev->dev);
260	return 0;
261
262	err_free:
263	kfree(objp: wdata->battery_desc.name);
264	wdata->battery_desc.name = NULL;
265	return ret;
266	}
267
268	static void wiimod_battery_remove(const struct wiimod_ops *ops,
269	struct wiimote_data *wdata)
270	{
271	if (!wdata->battery_desc.name)
272	return;
273
274	power_supply_unregister(psy: wdata->battery);
275	kfree(objp: wdata->battery_desc.name);
276	wdata->battery_desc.name = NULL;
277	}
278
279	static const struct wiimod_ops wiimod_battery = {
280	.flags = 0,
281	.arg = 0,
282	.probe = wiimod_battery_probe,
283	.remove = wiimod_battery_remove,
284	};
285
286	/*
287	* LED
288	* 0 to 4 player LEDs are supported by devices. The "arg" field of the
289	* wiimod_ops structure specifies which LED this module controls. This allows
290	* to register a limited number of LEDs.
291	* State is managed by wiimote core.
292	*/
293
294	static enum led_brightness wiimod_led_get(struct led_classdev *led_dev)
295	{
296	struct device *dev = led_dev->dev->parent;
297	struct wiimote_data *wdata = dev_to_wii(dev);
298	int i;
299	unsigned long flags;
300	bool value = false;
301
302	for (i = 0; i < 4; ++i) {
303	if (wdata->leds[i] == led_dev) {
304	spin_lock_irqsave(&wdata->state.lock, flags);
305	value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
306	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
307	break;
308	}
309	}
310
311	return value ? LED_FULL : LED_OFF;
312	}
313
314	static void wiimod_led_set(struct led_classdev *led_dev,
315	enum led_brightness value)
316	{
317	struct device *dev = led_dev->dev->parent;
318	struct wiimote_data *wdata = dev_to_wii(dev);
319	int i;
320	unsigned long flags;
321	__u8 state, flag;
322
323	for (i = 0; i < 4; ++i) {
324	if (wdata->leds[i] == led_dev) {
325	flag = WIIPROTO_FLAG_LED(i + 1);
326	spin_lock_irqsave(&wdata->state.lock, flags);
327	state = wdata->state.flags;
328	if (value == LED_OFF)
329	wiiproto_req_leds(wdata, leds: state & ~flag);
330	else
331	wiiproto_req_leds(wdata, leds: state | flag);
332	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
333	break;
334	}
335	}
336	}
337
338	static int wiimod_led_probe(const struct wiimod_ops *ops,
339	struct wiimote_data *wdata)
340	{
341	struct device *dev = &wdata->hdev->dev;
342	size_t namesz = strlen(dev_name(dev)) + 9;
343	struct led_classdev *led;
344	unsigned long flags;
345	char *name;
346	int ret;
347
348	led = kzalloc(size: sizeof(struct led_classdev) + namesz, GFP_KERNEL);
349	if (!led)
350	return -ENOMEM;
351
352	name = (void*)&led[1];
353	snprintf(buf: name, size: namesz, fmt: "%s:blue:p%lu", dev_name(dev), ops->arg);
354	led->name = name;
355	led->brightness = 0;
356	led->max_brightness = 1;
357	led->brightness_get = wiimod_led_get;
358	led->brightness_set = wiimod_led_set;
359
360	wdata->leds[ops->arg] = led;
361	ret = led_classdev_register(parent: dev, led_cdev: led);
362	if (ret)
363	goto err_free;
364
365	/* enable LED1 to stop initial LED-blinking */
366	if (ops->arg == 0) {
367	spin_lock_irqsave(&wdata->state.lock, flags);
368	wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
369	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
370	}
371
372	return 0;
373
374	err_free:
375	wdata->leds[ops->arg] = NULL;
376	kfree(objp: led);
377	return ret;
378	}
379
380	static void wiimod_led_remove(const struct wiimod_ops *ops,
381	struct wiimote_data *wdata)
382	{
383	if (!wdata->leds[ops->arg])
384	return;
385
386	led_classdev_unregister(led_cdev: wdata->leds[ops->arg]);
387	kfree(objp: wdata->leds[ops->arg]);
388	wdata->leds[ops->arg] = NULL;
389	}
390
391	static const struct wiimod_ops wiimod_leds[4] = {
392	{
393	.flags = 0,
394	.arg = 0,
395	.probe = wiimod_led_probe,
396	.remove = wiimod_led_remove,
397	},
398	{
399	.flags = 0,
400	.arg = 1,
401	.probe = wiimod_led_probe,
402	.remove = wiimod_led_remove,
403	},
404	{
405	.flags = 0,
406	.arg = 2,
407	.probe = wiimod_led_probe,
408	.remove = wiimod_led_remove,
409	},
410	{
411	.flags = 0,
412	.arg = 3,
413	.probe = wiimod_led_probe,
414	.remove = wiimod_led_remove,
415	},
416	};
417
418	/*
419	* Accelerometer
420	* 3 axis accelerometer data is part of nearly all DRMs. If not supported by a
421	* device, it's mostly cleared to 0. This module parses this data and provides
422	* it via a separate input device.
423	*/
424
425	static void wiimod_accel_in_accel(struct wiimote_data *wdata,
426	const __u8 *accel)
427	{
428	__u16 x, y, z;
429
430	if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
431	return;
432
433	/*
434	* payload is: BB BB XX YY ZZ
435	* Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
436	* contain the upper 8 bits of each value. The lower 2 bits are
437	* contained in the buttons data BB BB.
438	* Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
439	* X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
440	* accel value and bit 6 is the second bit of the Z value.
441	* The first bit of Y and Z values is not available and always set to 0.
442	* 0x200 is returned on no movement.
443	*/
444
445	x = accel[2] << 2;
446	y = accel[3] << 2;
447	z = accel[4] << 2;
448
449	x |= (accel[0] >> 5) & 0x3;
450	y |= (accel[1] >> 4) & 0x2;
451	z |= (accel[1] >> 5) & 0x2;
452
453	input_report_abs(dev: wdata->accel, ABS_RX, value: x - 0x200);
454	input_report_abs(dev: wdata->accel, ABS_RY, value: y - 0x200);
455	input_report_abs(dev: wdata->accel, ABS_RZ, value: z - 0x200);
456	input_sync(dev: wdata->accel);
457	}
458
459	static int wiimod_accel_open(struct input_dev *dev)
460	{
461	struct wiimote_data *wdata = input_get_drvdata(dev);
462	unsigned long flags;
463
464	spin_lock_irqsave(&wdata->state.lock, flags);
465	wiiproto_req_accel(wdata, accel: true);
466	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
467
468	return 0;
469	}
470
471	static void wiimod_accel_close(struct input_dev *dev)
472	{
473	struct wiimote_data *wdata = input_get_drvdata(dev);
474	unsigned long flags;
475
476	spin_lock_irqsave(&wdata->state.lock, flags);
477	wiiproto_req_accel(wdata, accel: false);
478	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
479	}
480
481	static int wiimod_accel_probe(const struct wiimod_ops *ops,
482	struct wiimote_data *wdata)
483	{
484	int ret;
485
486	wdata->accel = input_allocate_device();
487	if (!wdata->accel)
488	return -ENOMEM;
489
490	input_set_drvdata(dev: wdata->accel, data: wdata);
491	wdata->accel->open = wiimod_accel_open;
492	wdata->accel->close = wiimod_accel_close;
493	wdata->accel->dev.parent = &wdata->hdev->dev;
494	wdata->accel->id.bustype = wdata->hdev->bus;
495	wdata->accel->id.vendor = wdata->hdev->vendor;
496	wdata->accel->id.product = wdata->hdev->product;
497	wdata->accel->id.version = wdata->hdev->version;
498	wdata->accel->name = WIIMOTE_NAME " Accelerometer";
499
500	set_bit(EV_ABS, addr: wdata->accel->evbit);
501	set_bit(ABS_RX, addr: wdata->accel->absbit);
502	set_bit(ABS_RY, addr: wdata->accel->absbit);
503	set_bit(ABS_RZ, addr: wdata->accel->absbit);
504	input_set_abs_params(dev: wdata->accel, ABS_RX, min: -500, max: 500, fuzz: 2, flat: 4);
505	input_set_abs_params(dev: wdata->accel, ABS_RY, min: -500, max: 500, fuzz: 2, flat: 4);
506	input_set_abs_params(dev: wdata->accel, ABS_RZ, min: -500, max: 500, fuzz: 2, flat: 4);
507
508	ret = input_register_device(wdata->accel);
509	if (ret) {
510	hid_err(wdata->hdev, "cannot register input device\n");
511	goto err_free;
512	}
513
514	return 0;
515
516	err_free:
517	input_free_device(dev: wdata->accel);
518	wdata->accel = NULL;
519	return ret;
520	}
521
522	static void wiimod_accel_remove(const struct wiimod_ops *ops,
523	struct wiimote_data *wdata)
524	{
525	if (!wdata->accel)
526	return;
527
528	input_unregister_device(wdata->accel);
529	wdata->accel = NULL;
530	}
531
532	static const struct wiimod_ops wiimod_accel = {
533	.flags = 0,
534	.arg = 0,
535	.probe = wiimod_accel_probe,
536	.remove = wiimod_accel_remove,
537	.in_accel = wiimod_accel_in_accel,
538	};
539
540	/*
541	* IR Cam
542	* Up to 4 IR sources can be tracked by a normal Wii Remote. The IR cam needs
543	* to be initialized with a fairly complex procedure and consumes a lot of
544	* power. Therefore, as long as no application uses the IR input device, it is
545	* kept offline.
546	* Nearly no other device than the normal Wii Remotes supports the IR cam so
547	* you can disable this module for these devices.
548	*/
549
550	static void wiimod_ir_in_ir(struct wiimote_data *wdata, const __u8 *ir,
551	bool packed, unsigned int id)
552	{
553	__u16 x, y;
554	__u8 xid, yid;
555	bool sync = false;
556
557	if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
558	return;
559
560	switch (id) {
561	case 0:
562	xid = ABS_HAT0X;
563	yid = ABS_HAT0Y;
564	break;
565	case 1:
566	xid = ABS_HAT1X;
567	yid = ABS_HAT1Y;
568	break;
569	case 2:
570	xid = ABS_HAT2X;
571	yid = ABS_HAT2Y;
572	break;
573	case 3:
574	xid = ABS_HAT3X;
575	yid = ABS_HAT3Y;
576	sync = true;
577	break;
578	default:
579	return;
580	}
581
582	/*
583	* Basic IR data is encoded into 3 bytes. The first two bytes are the
584	* lower 8 bit of the X/Y data, the 3rd byte contains the upper 2 bits
585	* of both.
586	* If data is packed, then the 3rd byte is put first and slightly
587	* reordered. This allows to interleave packed and non-packed data to
588	* have two IR sets in 5 bytes instead of 6.
589	* The resulting 10bit X/Y values are passed to the ABS_HAT? input dev.
590	*/
591
592	if (packed) {
593	x = ir[1] | ((ir[0] & 0x03) << 8);
594	y = ir[2] | ((ir[0] & 0x0c) << 6);
595	} else {
596	x = ir[0] | ((ir[2] & 0x30) << 4);
597	y = ir[1] | ((ir[2] & 0xc0) << 2);
598	}
599
600	input_report_abs(dev: wdata->ir, code: xid, value: x);
601	input_report_abs(dev: wdata->ir, code: yid, value: y);
602
603	if (sync)
604	input_sync(dev: wdata->ir);
605	}
606
607	static int wiimod_ir_change(struct wiimote_data *wdata, __u16 mode)
608	{
609	int ret;
610	unsigned long flags;
611	__u8 format = 0;
612	static const __u8 data_enable[] = { 0x01 };
613	static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
614	0x00, 0xaa, 0x00, 0x64 };
615	static const __u8 data_sens2[] = { 0x63, 0x03 };
616	static const __u8 data_fin[] = { 0x08 };
617
618	spin_lock_irqsave(&wdata->state.lock, flags);
619
620	if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
621	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
622	return 0;
623	}
624
625	if (mode == 0) {
626	wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
627	wiiproto_req_ir1(wdata, flags: 0);
628	wiiproto_req_ir2(wdata, flags: 0);
629	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
630	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
631	return 0;
632	}
633
634	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
635
636	ret = wiimote_cmd_acquire(wdata);
637	if (ret)
638	return ret;
639
640	/* send PIXEL CLOCK ENABLE cmd first */
641	spin_lock_irqsave(&wdata->state.lock, flags);
642	wiimote_cmd_set(wdata, cmd: WIIPROTO_REQ_IR1, opt: 0);
643	wiiproto_req_ir1(wdata, flags: 0x06);
644	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
645
646	ret = wiimote_cmd_wait(wdata);
647	if (ret)
648	goto unlock;
649	if (wdata->state.cmd_err) {
650	ret = -EIO;
651	goto unlock;
652	}
653
654	/* enable IR LOGIC */
655	spin_lock_irqsave(&wdata->state.lock, flags);
656	wiimote_cmd_set(wdata, cmd: WIIPROTO_REQ_IR2, opt: 0);
657	wiiproto_req_ir2(wdata, flags: 0x06);
658	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
659
660	ret = wiimote_cmd_wait(wdata);
661	if (ret)
662	goto unlock;
663	if (wdata->state.cmd_err) {
664	ret = -EIO;
665	goto unlock;
666	}
667
668	/* enable IR cam but do not make it send data, yet */
669	ret = wiimote_cmd_write(wdata, offset: 0xb00030, wmem: data_enable,
670	size: sizeof(data_enable));
671	if (ret)
672	goto unlock;
673
674	/* write first sensitivity block */
675	ret = wiimote_cmd_write(wdata, offset: 0xb00000, wmem: data_sens1,
676	size: sizeof(data_sens1));
677	if (ret)
678	goto unlock;
679
680	/* write second sensitivity block */
681	ret = wiimote_cmd_write(wdata, offset: 0xb0001a, wmem: data_sens2,
682	size: sizeof(data_sens2));
683	if (ret)
684	goto unlock;
685
686	/* put IR cam into desired state */
687	switch (mode) {
688	case WIIPROTO_FLAG_IR_FULL:
689	format = 5;
690	break;
691	case WIIPROTO_FLAG_IR_EXT:
692	format = 3;
693	break;
694	case WIIPROTO_FLAG_IR_BASIC:
695	format = 1;
696	break;
697	}
698	ret = wiimote_cmd_write(wdata, offset: 0xb00033, wmem: &format, size: sizeof(format));
699	if (ret)
700	goto unlock;
701
702	/* make IR cam send data */
703	ret = wiimote_cmd_write(wdata, offset: 0xb00030, wmem: data_fin, size: sizeof(data_fin));
704	if (ret)
705	goto unlock;
706
707	/* request new DRM mode compatible to IR mode */
708	spin_lock_irqsave(&wdata->state.lock, flags);
709	wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
710	wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
711	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
712	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
713
714	unlock:
715	wiimote_cmd_release(wdata);
716	return ret;
717	}
718
719	static int wiimod_ir_open(struct input_dev *dev)
720	{
721	struct wiimote_data *wdata = input_get_drvdata(dev);
722
723	return wiimod_ir_change(wdata, WIIPROTO_FLAG_IR_BASIC);
724	}
725
726	static void wiimod_ir_close(struct input_dev *dev)
727	{
728	struct wiimote_data *wdata = input_get_drvdata(dev);
729
730	wiimod_ir_change(wdata, mode: 0);
731	}
732
733	static int wiimod_ir_probe(const struct wiimod_ops *ops,
734	struct wiimote_data *wdata)
735	{
736	int ret;
737
738	wdata->ir = input_allocate_device();
739	if (!wdata->ir)
740	return -ENOMEM;
741
742	input_set_drvdata(dev: wdata->ir, data: wdata);
743	wdata->ir->open = wiimod_ir_open;
744	wdata->ir->close = wiimod_ir_close;
745	wdata->ir->dev.parent = &wdata->hdev->dev;
746	wdata->ir->id.bustype = wdata->hdev->bus;
747	wdata->ir->id.vendor = wdata->hdev->vendor;
748	wdata->ir->id.product = wdata->hdev->product;
749	wdata->ir->id.version = wdata->hdev->version;
750	wdata->ir->name = WIIMOTE_NAME " IR";
751
752	set_bit(EV_ABS, addr: wdata->ir->evbit);
753	set_bit(ABS_HAT0X, addr: wdata->ir->absbit);
754	set_bit(ABS_HAT0Y, addr: wdata->ir->absbit);
755	set_bit(ABS_HAT1X, addr: wdata->ir->absbit);
756	set_bit(ABS_HAT1Y, addr: wdata->ir->absbit);
757	set_bit(ABS_HAT2X, addr: wdata->ir->absbit);
758	set_bit(ABS_HAT2Y, addr: wdata->ir->absbit);
759	set_bit(ABS_HAT3X, addr: wdata->ir->absbit);
760	set_bit(ABS_HAT3Y, addr: wdata->ir->absbit);
761	input_set_abs_params(dev: wdata->ir, ABS_HAT0X, min: 0, max: 1023, fuzz: 2, flat: 4);
762	input_set_abs_params(dev: wdata->ir, ABS_HAT0Y, min: 0, max: 767, fuzz: 2, flat: 4);
763	input_set_abs_params(dev: wdata->ir, ABS_HAT1X, min: 0, max: 1023, fuzz: 2, flat: 4);
764	input_set_abs_params(dev: wdata->ir, ABS_HAT1Y, min: 0, max: 767, fuzz: 2, flat: 4);
765	input_set_abs_params(dev: wdata->ir, ABS_HAT2X, min: 0, max: 1023, fuzz: 2, flat: 4);
766	input_set_abs_params(dev: wdata->ir, ABS_HAT2Y, min: 0, max: 767, fuzz: 2, flat: 4);
767	input_set_abs_params(dev: wdata->ir, ABS_HAT3X, min: 0, max: 1023, fuzz: 2, flat: 4);
768	input_set_abs_params(dev: wdata->ir, ABS_HAT3Y, min: 0, max: 767, fuzz: 2, flat: 4);
769
770	ret = input_register_device(wdata->ir);
771	if (ret) {
772	hid_err(wdata->hdev, "cannot register input device\n");
773	goto err_free;
774	}
775
776	return 0;
777
778	err_free:
779	input_free_device(dev: wdata->ir);
780	wdata->ir = NULL;
781	return ret;
782	}
783
784	static void wiimod_ir_remove(const struct wiimod_ops *ops,
785	struct wiimote_data *wdata)
786	{
787	if (!wdata->ir)
788	return;
789
790	input_unregister_device(wdata->ir);
791	wdata->ir = NULL;
792	}
793
794	static const struct wiimod_ops wiimod_ir = {
795	.flags = 0,
796	.arg = 0,
797	.probe = wiimod_ir_probe,
798	.remove = wiimod_ir_remove,
799	.in_ir = wiimod_ir_in_ir,
800	};
801
802	/*
803	* Nunchuk Extension
804	* The Nintendo Wii Nunchuk was the first official extension published by
805	* Nintendo. It provides two additional keys and a separate accelerometer. It
806	* can be hotplugged to standard Wii Remotes.
807	*/
808
809	enum wiimod_nunchuk_keys {
810	WIIMOD_NUNCHUK_KEY_C,
811	WIIMOD_NUNCHUK_KEY_Z,
812	WIIMOD_NUNCHUK_KEY_NUM,
813	};
814
815	static const __u16 wiimod_nunchuk_map[] = {
816	BTN_C, /* WIIMOD_NUNCHUK_KEY_C */
817	BTN_Z, /* WIIMOD_NUNCHUK_KEY_Z */
818	};
819
820	static void wiimod_nunchuk_in_ext(struct wiimote_data *wdata, const __u8 *ext)
821	{
822	__s16 x, y, z, bx, by;
823
824	/* Byte | 8 7 | 6 5 | 4 3 | 2 | 1 |
825	* -----+----------+---------+---------+----+-----+
826	* 1 | Button X <7:0> |
827	* 2 | Button Y <7:0> |
828	* -----+----------+---------+---------+----+-----+
829	* 3 | Speed X <9:2> |
830	* 4 | Speed Y <9:2> |
831	* 5 | Speed Z <9:2> |
832	* -----+----------+---------+---------+----+-----+
833	* 6 | Z <1:0> | Y <1:0> | X <1:0> | BC | BZ |
834	* -----+----------+---------+---------+----+-----+
835	* Button X/Y is the analog stick. Speed X, Y and Z are the
836	* accelerometer data in the same format as the wiimote's accelerometer.
837	* The 6th byte contains the LSBs of the accelerometer data.
838	* BC and BZ are the C and Z buttons: 0 means pressed
839	*
840	* If reported interleaved with motionp, then the layout changes. The
841	* 5th and 6th byte changes to:
842	* -----+-----------------------------------+-----+
843	* 5 | Speed Z <9:3> | EXT |
844	* -----+--------+-----+-----+----+----+----+-----+
845	* 6 |Z <2:1> |Y <1>|X <1>| BC | BZ | 0 | 0 |
846	* -----+--------+-----+-----+----+----+----+-----+
847	* All three accelerometer values lose their LSB. The other data is
848	* still available but slightly moved.
849	*
850	* Center data for button values is 128. Center value for accelerometer
851	* values it 512 / 0x200
852	*/
853
854	bx = ext[0];
855	by = ext[1];
856	bx -= 128;
857	by -= 128;
858
859	x = ext[2] << 2;
860	y = ext[3] << 2;
861	z = ext[4] << 2;
862
863	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
864	x |= (ext[5] >> 3) & 0x02;
865	y |= (ext[5] >> 4) & 0x02;
866	z &= ~0x4;
867	z |= (ext[5] >> 5) & 0x06;
868	} else {
869	x |= (ext[5] >> 2) & 0x03;
870	y |= (ext[5] >> 4) & 0x03;
871	z |= (ext[5] >> 6) & 0x03;
872	}
873
874	x -= 0x200;
875	y -= 0x200;
876	z -= 0x200;
877
878	input_report_abs(dev: wdata->extension.input, ABS_HAT0X, value: bx);
879	input_report_abs(dev: wdata->extension.input, ABS_HAT0Y, value: by);
880
881	input_report_abs(dev: wdata->extension.input, ABS_RX, value: x);
882	input_report_abs(dev: wdata->extension.input, ABS_RY, value: y);
883	input_report_abs(dev: wdata->extension.input, ABS_RZ, value: z);
884
885	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
886	input_report_key(dev: wdata->extension.input,
887	code: wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
888	value: !(ext[5] & 0x04));
889	input_report_key(dev: wdata->extension.input,
890	code: wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
891	value: !(ext[5] & 0x08));
892	} else {
893	input_report_key(dev: wdata->extension.input,
894	code: wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_Z],
895	value: !(ext[5] & 0x01));
896	input_report_key(dev: wdata->extension.input,
897	code: wiimod_nunchuk_map[WIIMOD_NUNCHUK_KEY_C],
898	value: !(ext[5] & 0x02));
899	}
900
901	input_sync(dev: wdata->extension.input);
902	}
903
904	static int wiimod_nunchuk_open(struct input_dev *dev)
905	{
906	struct wiimote_data *wdata = input_get_drvdata(dev);
907	unsigned long flags;
908
909	spin_lock_irqsave(&wdata->state.lock, flags);
910	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
911	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
912	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
913
914	return 0;
915	}
916
917	static void wiimod_nunchuk_close(struct input_dev *dev)
918	{
919	struct wiimote_data *wdata = input_get_drvdata(dev);
920	unsigned long flags;
921
922	spin_lock_irqsave(&wdata->state.lock, flags);
923	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
924	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
925	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
926	}
927
928	static int wiimod_nunchuk_probe(const struct wiimod_ops *ops,
929	struct wiimote_data *wdata)
930	{
931	int ret, i;
932
933	wdata->extension.input = input_allocate_device();
934	if (!wdata->extension.input)
935	return -ENOMEM;
936
937	input_set_drvdata(dev: wdata->extension.input, data: wdata);
938	wdata->extension.input->open = wiimod_nunchuk_open;
939	wdata->extension.input->close = wiimod_nunchuk_close;
940	wdata->extension.input->dev.parent = &wdata->hdev->dev;
941	wdata->extension.input->id.bustype = wdata->hdev->bus;
942	wdata->extension.input->id.vendor = wdata->hdev->vendor;
943	wdata->extension.input->id.product = wdata->hdev->product;
944	wdata->extension.input->id.version = wdata->hdev->version;
945	wdata->extension.input->name = WIIMOTE_NAME " Nunchuk";
946
947	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
948	for (i = 0; i < WIIMOD_NUNCHUK_KEY_NUM; ++i)
949	set_bit(nr: wiimod_nunchuk_map[i],
950	addr: wdata->extension.input->keybit);
951
952	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
953	set_bit(ABS_HAT0X, addr: wdata->extension.input->absbit);
954	set_bit(ABS_HAT0Y, addr: wdata->extension.input->absbit);
955	input_set_abs_params(dev: wdata->extension.input,
956	ABS_HAT0X, min: -120, max: 120, fuzz: 2, flat: 4);
957	input_set_abs_params(dev: wdata->extension.input,
958	ABS_HAT0Y, min: -120, max: 120, fuzz: 2, flat: 4);
959	set_bit(ABS_RX, addr: wdata->extension.input->absbit);
960	set_bit(ABS_RY, addr: wdata->extension.input->absbit);
961	set_bit(ABS_RZ, addr: wdata->extension.input->absbit);
962	input_set_abs_params(dev: wdata->extension.input,
963	ABS_RX, min: -500, max: 500, fuzz: 2, flat: 4);
964	input_set_abs_params(dev: wdata->extension.input,
965	ABS_RY, min: -500, max: 500, fuzz: 2, flat: 4);
966	input_set_abs_params(dev: wdata->extension.input,
967	ABS_RZ, min: -500, max: 500, fuzz: 2, flat: 4);
968
969	ret = input_register_device(wdata->extension.input);
970	if (ret)
971	goto err_free;
972
973	return 0;
974
975	err_free:
976	input_free_device(dev: wdata->extension.input);
977	wdata->extension.input = NULL;
978	return ret;
979	}
980
981	static void wiimod_nunchuk_remove(const struct wiimod_ops *ops,
982	struct wiimote_data *wdata)
983	{
984	if (!wdata->extension.input)
985	return;
986
987	input_unregister_device(wdata->extension.input);
988	wdata->extension.input = NULL;
989	}
990
991	static const struct wiimod_ops wiimod_nunchuk = {
992	.flags = 0,
993	.arg = 0,
994	.probe = wiimod_nunchuk_probe,
995	.remove = wiimod_nunchuk_remove,
996	.in_ext = wiimod_nunchuk_in_ext,
997	};
998
999	/*
1000	* Classic Controller
1001	* Another official extension from Nintendo. It provides a classic
1002	* gamecube-like controller that can be hotplugged on the Wii Remote.
1003	* It has several hardware buttons and switches that are all reported via
1004	* a normal extension device.
1005	*/
1006
1007	enum wiimod_classic_keys {
1008	WIIMOD_CLASSIC_KEY_A,
1009	WIIMOD_CLASSIC_KEY_B,
1010	WIIMOD_CLASSIC_KEY_X,
1011	WIIMOD_CLASSIC_KEY_Y,
1012	WIIMOD_CLASSIC_KEY_ZL,
1013	WIIMOD_CLASSIC_KEY_ZR,
1014	WIIMOD_CLASSIC_KEY_PLUS,
1015	WIIMOD_CLASSIC_KEY_MINUS,
1016	WIIMOD_CLASSIC_KEY_HOME,
1017	WIIMOD_CLASSIC_KEY_LEFT,
1018	WIIMOD_CLASSIC_KEY_RIGHT,
1019	WIIMOD_CLASSIC_KEY_UP,
1020	WIIMOD_CLASSIC_KEY_DOWN,
1021	WIIMOD_CLASSIC_KEY_LT,
1022	WIIMOD_CLASSIC_KEY_RT,
1023	WIIMOD_CLASSIC_KEY_NUM,
1024	};
1025
1026	static const __u16 wiimod_classic_map[] = {
1027	BTN_A, /* WIIMOD_CLASSIC_KEY_A */
1028	BTN_B, /* WIIMOD_CLASSIC_KEY_B */
1029	BTN_X, /* WIIMOD_CLASSIC_KEY_X */
1030	BTN_Y, /* WIIMOD_CLASSIC_KEY_Y */
1031	BTN_TL2, /* WIIMOD_CLASSIC_KEY_ZL */
1032	BTN_TR2, /* WIIMOD_CLASSIC_KEY_ZR */
1033	KEY_NEXT, /* WIIMOD_CLASSIC_KEY_PLUS */
1034	KEY_PREVIOUS, /* WIIMOD_CLASSIC_KEY_MINUS */
1035	BTN_MODE, /* WIIMOD_CLASSIC_KEY_HOME */
1036	KEY_LEFT, /* WIIMOD_CLASSIC_KEY_LEFT */
1037	KEY_RIGHT, /* WIIMOD_CLASSIC_KEY_RIGHT */
1038	KEY_UP, /* WIIMOD_CLASSIC_KEY_UP */
1039	KEY_DOWN, /* WIIMOD_CLASSIC_KEY_DOWN */
1040	BTN_TL, /* WIIMOD_CLASSIC_KEY_LT */
1041	BTN_TR, /* WIIMOD_CLASSIC_KEY_RT */
1042	};
1043
1044	static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1045	{
1046	__s8 rx, ry, lx, ly, lt, rt;
1047
1048	/* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
1049	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1050	* 1 | RX <5:4> | LX <5:0> |
1051	* 2 | RX <3:2> | LY <5:0> |
1052	* -----+-----+-----+-----+-----------------------------+
1053	* 3 |RX<1>| LT <5:4> | RY <5:1> |
1054	* -----+-----+-----------+-----------------------------+
1055	* 4 | LT <3:1> | RT <5:1> |
1056	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1057	* 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | 1 |
1058	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1059	* 6 | BZL | BB | BY | BA | BX | BZR | BDL | BDU |
1060	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1061	* All buttons are 0 if pressed
1062	* RX and RY are right analog stick
1063	* LX and LY are left analog stick
1064	* LT is left trigger, RT is right trigger
1065	* BLT is 0 if left trigger is fully pressed
1066	* BRT is 0 if right trigger is fully pressed
1067	* BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1068	* BZL is left Z button and BZR is right Z button
1069	* B-, BH, B+ are +, HOME and - buttons
1070	* BB, BY, BA, BX are A, B, X, Y buttons
1071	* LSB of RX, RY, LT, and RT are not transmitted and always 0.
1072	*
1073	* With motionp enabled it changes slightly to this:
1074	* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
1075	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1076	* 1 | RX <5:4> | LX <5:1> | BDU |
1077	* 2 | RX <3:2> | LY <5:1> | BDL |
1078	* -----+-----+-----+-----+-----------------------+-----+
1079	* 3 |RX<1>| LT <5:4> | RY <5:1> |
1080	* -----+-----+-----------+-----------------------------+
1081	* 4 | LT <3:1> | RT <5:1> |
1082	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1083	* 5 | BDR | BDD | BLT | B- | BH | B+ | BRT | EXT |
1084	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1085	* 6 | BZL | BB | BY | BA | BX | BZR | 0 | 0 |
1086	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1087	* Only the LSBs of LX and LY are lost. BDU and BDL are moved, the rest
1088	* is the same as before.
1089	*/
1090
1091	static const s8 digital_to_analog[3] = {0x20, 0, -0x20};
1092
1093	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1094	if (wiimote_dpad_as_analog) {
1095	lx = digital_to_analog[1 - !(ext[4] & 0x80)
1096	+ !(ext[1] & 0x01)];
1097	ly = digital_to_analog[1 - !(ext[4] & 0x40)
1098	+ !(ext[0] & 0x01)];
1099	} else {
1100	lx = (ext[0] & 0x3e) - 0x20;
1101	ly = (ext[1] & 0x3e) - 0x20;
1102	}
1103	} else {
1104	if (wiimote_dpad_as_analog) {
1105	lx = digital_to_analog[1 - !(ext[4] & 0x80)
1106	+ !(ext[5] & 0x02)];
1107	ly = digital_to_analog[1 - !(ext[4] & 0x40)
1108	+ !(ext[5] & 0x01)];
1109	} else {
1110	lx = (ext[0] & 0x3f) - 0x20;
1111	ly = (ext[1] & 0x3f) - 0x20;
1112	}
1113	}
1114
1115	rx = (ext[0] >> 3) & 0x18;
1116	rx |= (ext[1] >> 5) & 0x06;
1117	rx |= (ext[2] >> 7) & 0x01;
1118	ry = ext[2] & 0x1f;
1119
1120	rt = ext[3] & 0x1f;
1121	lt = (ext[2] >> 2) & 0x18;
1122	lt |= (ext[3] >> 5) & 0x07;
1123
1124	rx <<= 1;
1125	ry <<= 1;
1126	rt <<= 1;
1127	lt <<= 1;
1128
1129	input_report_abs(dev: wdata->extension.input, ABS_HAT1X, value: lx);
1130	input_report_abs(dev: wdata->extension.input, ABS_HAT1Y, value: ly);
1131	input_report_abs(dev: wdata->extension.input, ABS_HAT2X, value: rx - 0x20);
1132	input_report_abs(dev: wdata->extension.input, ABS_HAT2Y, value: ry - 0x20);
1133	input_report_abs(dev: wdata->extension.input, ABS_HAT3X, value: rt);
1134	input_report_abs(dev: wdata->extension.input, ABS_HAT3Y, value: lt);
1135
1136	input_report_key(dev: wdata->extension.input,
1137	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT],
1138	value: !(ext[4] & 0x20));
1139	input_report_key(dev: wdata->extension.input,
1140	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_MINUS],
1141	value: !(ext[4] & 0x10));
1142	input_report_key(dev: wdata->extension.input,
1143	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_HOME],
1144	value: !(ext[4] & 0x08));
1145	input_report_key(dev: wdata->extension.input,
1146	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_PLUS],
1147	value: !(ext[4] & 0x04));
1148	input_report_key(dev: wdata->extension.input,
1149	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_RT],
1150	value: !(ext[4] & 0x02));
1151	input_report_key(dev: wdata->extension.input,
1152	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZL],
1153	value: !(ext[5] & 0x80));
1154	input_report_key(dev: wdata->extension.input,
1155	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_B],
1156	value: !(ext[5] & 0x40));
1157	input_report_key(dev: wdata->extension.input,
1158	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_Y],
1159	value: !(ext[5] & 0x20));
1160	input_report_key(dev: wdata->extension.input,
1161	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_A],
1162	value: !(ext[5] & 0x10));
1163	input_report_key(dev: wdata->extension.input,
1164	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_X],
1165	value: !(ext[5] & 0x08));
1166	input_report_key(dev: wdata->extension.input,
1167	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR],
1168	value: !(ext[5] & 0x04));
1169
1170	if (!wiimote_dpad_as_analog) {
1171	input_report_key(dev: wdata->extension.input,
1172	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT],
1173	value: !(ext[4] & 0x80));
1174	input_report_key(dev: wdata->extension.input,
1175	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN],
1176	value: !(ext[4] & 0x40));
1177
1178	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
1179	input_report_key(dev: wdata->extension.input,
1180	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1181	value: !(ext[1] & 0x01));
1182	input_report_key(dev: wdata->extension.input,
1183	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1184	value: !(ext[0] & 0x01));
1185	} else {
1186	input_report_key(dev: wdata->extension.input,
1187	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT],
1188	value: !(ext[5] & 0x02));
1189	input_report_key(dev: wdata->extension.input,
1190	code: wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP],
1191	value: !(ext[5] & 0x01));
1192	}
1193	}
1194
1195	input_sync(dev: wdata->extension.input);
1196	}
1197
1198	static int wiimod_classic_open(struct input_dev *dev)
1199	{
1200	struct wiimote_data *wdata = input_get_drvdata(dev);
1201	unsigned long flags;
1202
1203	spin_lock_irqsave(&wdata->state.lock, flags);
1204	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1205	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1206	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1207
1208	return 0;
1209	}
1210
1211	static void wiimod_classic_close(struct input_dev *dev)
1212	{
1213	struct wiimote_data *wdata = input_get_drvdata(dev);
1214	unsigned long flags;
1215
1216	spin_lock_irqsave(&wdata->state.lock, flags);
1217	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1218	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1219	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1220	}
1221
1222	static int wiimod_classic_probe(const struct wiimod_ops *ops,
1223	struct wiimote_data *wdata)
1224	{
1225	int ret, i;
1226
1227	wdata->extension.input = input_allocate_device();
1228	if (!wdata->extension.input)
1229	return -ENOMEM;
1230
1231	input_set_drvdata(dev: wdata->extension.input, data: wdata);
1232	wdata->extension.input->open = wiimod_classic_open;
1233	wdata->extension.input->close = wiimod_classic_close;
1234	wdata->extension.input->dev.parent = &wdata->hdev->dev;
1235	wdata->extension.input->id.bustype = wdata->hdev->bus;
1236	wdata->extension.input->id.vendor = wdata->hdev->vendor;
1237	wdata->extension.input->id.product = wdata->hdev->product;
1238	wdata->extension.input->id.version = wdata->hdev->version;
1239	wdata->extension.input->name = WIIMOTE_NAME " Classic Controller";
1240
1241	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
1242	for (i = 0; i < WIIMOD_CLASSIC_KEY_NUM; ++i)
1243	set_bit(nr: wiimod_classic_map[i],
1244	addr: wdata->extension.input->keybit);
1245
1246	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
1247	set_bit(ABS_HAT1X, addr: wdata->extension.input->absbit);
1248	set_bit(ABS_HAT1Y, addr: wdata->extension.input->absbit);
1249	set_bit(ABS_HAT2X, addr: wdata->extension.input->absbit);
1250	set_bit(ABS_HAT2Y, addr: wdata->extension.input->absbit);
1251	set_bit(ABS_HAT3X, addr: wdata->extension.input->absbit);
1252	set_bit(ABS_HAT3Y, addr: wdata->extension.input->absbit);
1253	input_set_abs_params(dev: wdata->extension.input,
1254	ABS_HAT1X, min: -30, max: 30, fuzz: 1, flat: 1);
1255	input_set_abs_params(dev: wdata->extension.input,
1256	ABS_HAT1Y, min: -30, max: 30, fuzz: 1, flat: 1);
1257	input_set_abs_params(dev: wdata->extension.input,
1258	ABS_HAT2X, min: -30, max: 30, fuzz: 1, flat: 1);
1259	input_set_abs_params(dev: wdata->extension.input,
1260	ABS_HAT2Y, min: -30, max: 30, fuzz: 1, flat: 1);
1261	input_set_abs_params(dev: wdata->extension.input,
1262	ABS_HAT3X, min: -30, max: 30, fuzz: 1, flat: 1);
1263	input_set_abs_params(dev: wdata->extension.input,
1264	ABS_HAT3Y, min: -30, max: 30, fuzz: 1, flat: 1);
1265
1266	ret = input_register_device(wdata->extension.input);
1267	if (ret)
1268	goto err_free;
1269
1270	return 0;
1271
1272	err_free:
1273	input_free_device(dev: wdata->extension.input);
1274	wdata->extension.input = NULL;
1275	return ret;
1276	}
1277
1278	static void wiimod_classic_remove(const struct wiimod_ops *ops,
1279	struct wiimote_data *wdata)
1280	{
1281	if (!wdata->extension.input)
1282	return;
1283
1284	input_unregister_device(wdata->extension.input);
1285	wdata->extension.input = NULL;
1286	}
1287
1288	static const struct wiimod_ops wiimod_classic = {
1289	.flags = 0,
1290	.arg = 0,
1291	.probe = wiimod_classic_probe,
1292	.remove = wiimod_classic_remove,
1293	.in_ext = wiimod_classic_in_ext,
1294	};
1295
1296	/*
1297	* Balance Board Extension
1298	* The Nintendo Wii Balance Board provides four hardware weight sensor plus a
1299	* single push button. No other peripherals are available. However, the
1300	* balance-board data is sent via a standard Wii Remote extension. All other
1301	* data for non-present hardware is zeroed out.
1302	* Some 3rd party devices react allergic if we try to access normal Wii Remote
1303	* hardware, so this extension module should be the only module that is loaded
1304	* on balance boards.
1305	* The balance board needs 8 bytes extension data instead of basic 6 bytes so
1306	* it needs the WIIMOD_FLAG_EXT8 flag.
1307	*/
1308
1309	static void wiimod_bboard_in_keys(struct wiimote_data *wdata, const __u8 *keys)
1310	{
1311	input_report_key(dev: wdata->extension.input, BTN_A,
1312	value: !!(keys[1] & 0x08));
1313	input_sync(dev: wdata->extension.input);
1314	}
1315
1316	static void wiimod_bboard_in_ext(struct wiimote_data *wdata,
1317	const __u8 *ext)
1318	{
1319	__s32 val[4], tmp, div;
1320	unsigned int i;
1321	struct wiimote_state *s = &wdata->state;
1322
1323	/*
1324	* Balance board data layout:
1325	*
1326	* Byte | 8 7 6 5 4 3 2 1 |
1327	* -----+--------------------------+
1328	* 1 | Top Right <15:8> |
1329	* 2 | Top Right <7:0> |
1330	* -----+--------------------------+
1331	* 3 | Bottom Right <15:8> |
1332	* 4 | Bottom Right <7:0> |
1333	* -----+--------------------------+
1334	* 5 | Top Left <15:8> |
1335	* 6 | Top Left <7:0> |
1336	* -----+--------------------------+
1337	* 7 | Bottom Left <15:8> |
1338	* 8 | Bottom Left <7:0> |
1339	* -----+--------------------------+
1340	*
1341	* These values represent the weight-measurements of the Wii-balance
1342	* board with 16bit precision.
1343	*
1344	* The balance-board is never reported interleaved with motionp.
1345	*/
1346
1347	val[0] = ext[0];
1348	val[0] <<= 8;
1349	val[0] |= ext[1];
1350
1351	val[1] = ext[2];
1352	val[1] <<= 8;
1353	val[1] |= ext[3];
1354
1355	val[2] = ext[4];
1356	val[2] <<= 8;
1357	val[2] |= ext[5];
1358
1359	val[3] = ext[6];
1360	val[3] <<= 8;
1361	val[3] |= ext[7];
1362
1363	/* apply calibration data */
1364	for (i = 0; i < 4; i++) {
1365	if (val[i] <= s->calib_bboard[i][0]) {
1366	tmp = 0;
1367	} else if (val[i] < s->calib_bboard[i][1]) {
1368	tmp = val[i] - s->calib_bboard[i][0];
1369	tmp *= 1700;
1370	div = s->calib_bboard[i][1] - s->calib_bboard[i][0];
1371	tmp /= div ? div : 1;
1372	} else {
1373	tmp = val[i] - s->calib_bboard[i][1];
1374	tmp *= 1700;
1375	div = s->calib_bboard[i][2] - s->calib_bboard[i][1];
1376	tmp /= div ? div : 1;
1377	tmp += 1700;
1378	}
1379	val[i] = tmp;
1380	}
1381
1382	input_report_abs(dev: wdata->extension.input, ABS_HAT0X, value: val[0]);
1383	input_report_abs(dev: wdata->extension.input, ABS_HAT0Y, value: val[1]);
1384	input_report_abs(dev: wdata->extension.input, ABS_HAT1X, value: val[2]);
1385	input_report_abs(dev: wdata->extension.input, ABS_HAT1Y, value: val[3]);
1386	input_sync(dev: wdata->extension.input);
1387	}
1388
1389	static int wiimod_bboard_open(struct input_dev *dev)
1390	{
1391	struct wiimote_data *wdata = input_get_drvdata(dev);
1392	unsigned long flags;
1393
1394	spin_lock_irqsave(&wdata->state.lock, flags);
1395	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1396	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1397	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1398
1399	return 0;
1400	}
1401
1402	static void wiimod_bboard_close(struct input_dev *dev)
1403	{
1404	struct wiimote_data *wdata = input_get_drvdata(dev);
1405	unsigned long flags;
1406
1407	spin_lock_irqsave(&wdata->state.lock, flags);
1408	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1409	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1410	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1411	}
1412
1413	static ssize_t wiimod_bboard_calib_show(struct device *dev,
1414	struct device_attribute *attr,
1415	char *out)
1416	{
1417	struct wiimote_data *wdata = dev_to_wii(dev);
1418	int i, j, ret;
1419	__u16 val;
1420	__u8 buf[24], offs;
1421
1422	ret = wiimote_cmd_acquire(wdata);
1423	if (ret)
1424	return ret;
1425
1426	ret = wiimote_cmd_read(wdata, offset: 0xa40024, rmem: buf, size: 12);
1427	if (ret != 12) {
1428	wiimote_cmd_release(wdata);
1429	return ret < 0 ? ret : -EIO;
1430	}
1431	ret = wiimote_cmd_read(wdata, offset: 0xa40024 + 12, rmem: buf + 12, size: 12);
1432	if (ret != 12) {
1433	wiimote_cmd_release(wdata);
1434	return ret < 0 ? ret : -EIO;
1435	}
1436
1437	wiimote_cmd_release(wdata);
1438
1439	spin_lock_irq(lock: &wdata->state.lock);
1440	offs = 0;
1441	for (i = 0; i < 3; ++i) {
1442	for (j = 0; j < 4; ++j) {
1443	wdata->state.calib_bboard[j][i] = buf[offs];
1444	wdata->state.calib_bboard[j][i] <<= 8;
1445	wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1446	offs += 2;
1447	}
1448	}
1449	spin_unlock_irq(lock: &wdata->state.lock);
1450
1451	ret = 0;
1452	for (i = 0; i < 3; ++i) {
1453	for (j = 0; j < 4; ++j) {
1454	val = wdata->state.calib_bboard[j][i];
1455	if (i == 2 && j == 3)
1456	ret += sprintf(buf: &out[ret], fmt: "%04x\n", val);
1457	else
1458	ret += sprintf(buf: &out[ret], fmt: "%04x:", val);
1459	}
1460	}
1461
1462	return ret;
1463	}
1464
1465	static DEVICE_ATTR(bboard_calib, S_IRUGO, wiimod_bboard_calib_show, NULL);
1466
1467	static int wiimod_bboard_probe(const struct wiimod_ops *ops,
1468	struct wiimote_data *wdata)
1469	{
1470	int ret, i, j;
1471	__u8 buf[24], offs;
1472
1473	wiimote_cmd_acquire_noint(wdata);
1474
1475	ret = wiimote_cmd_read(wdata, offset: 0xa40024, rmem: buf, size: 12);
1476	if (ret != 12) {
1477	wiimote_cmd_release(wdata);
1478	return ret < 0 ? ret : -EIO;
1479	}
1480	ret = wiimote_cmd_read(wdata, offset: 0xa40024 + 12, rmem: buf + 12, size: 12);
1481	if (ret != 12) {
1482	wiimote_cmd_release(wdata);
1483	return ret < 0 ? ret : -EIO;
1484	}
1485
1486	wiimote_cmd_release(wdata);
1487
1488	offs = 0;
1489	for (i = 0; i < 3; ++i) {
1490	for (j = 0; j < 4; ++j) {
1491	wdata->state.calib_bboard[j][i] = buf[offs];
1492	wdata->state.calib_bboard[j][i] <<= 8;
1493	wdata->state.calib_bboard[j][i] |= buf[offs + 1];
1494	offs += 2;
1495	}
1496	}
1497
1498	wdata->extension.input = input_allocate_device();
1499	if (!wdata->extension.input)
1500	return -ENOMEM;
1501
1502	ret = device_create_file(device: &wdata->hdev->dev,
1503	entry: &dev_attr_bboard_calib);
1504	if (ret) {
1505	hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1506	goto err_free;
1507	}
1508
1509	input_set_drvdata(dev: wdata->extension.input, data: wdata);
1510	wdata->extension.input->open = wiimod_bboard_open;
1511	wdata->extension.input->close = wiimod_bboard_close;
1512	wdata->extension.input->dev.parent = &wdata->hdev->dev;
1513	wdata->extension.input->id.bustype = wdata->hdev->bus;
1514	wdata->extension.input->id.vendor = wdata->hdev->vendor;
1515	wdata->extension.input->id.product = wdata->hdev->product;
1516	wdata->extension.input->id.version = wdata->hdev->version;
1517	wdata->extension.input->name = WIIMOTE_NAME " Balance Board";
1518
1519	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
1520	set_bit(BTN_A, addr: wdata->extension.input->keybit);
1521
1522	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
1523	set_bit(ABS_HAT0X, addr: wdata->extension.input->absbit);
1524	set_bit(ABS_HAT0Y, addr: wdata->extension.input->absbit);
1525	set_bit(ABS_HAT1X, addr: wdata->extension.input->absbit);
1526	set_bit(ABS_HAT1Y, addr: wdata->extension.input->absbit);
1527	input_set_abs_params(dev: wdata->extension.input,
1528	ABS_HAT0X, min: 0, max: 65535, fuzz: 2, flat: 4);
1529	input_set_abs_params(dev: wdata->extension.input,
1530	ABS_HAT0Y, min: 0, max: 65535, fuzz: 2, flat: 4);
1531	input_set_abs_params(dev: wdata->extension.input,
1532	ABS_HAT1X, min: 0, max: 65535, fuzz: 2, flat: 4);
1533	input_set_abs_params(dev: wdata->extension.input,
1534	ABS_HAT1Y, min: 0, max: 65535, fuzz: 2, flat: 4);
1535
1536	ret = input_register_device(wdata->extension.input);
1537	if (ret)
1538	goto err_file;
1539
1540	return 0;
1541
1542	err_file:
1543	device_remove_file(dev: &wdata->hdev->dev,
1544	attr: &dev_attr_bboard_calib);
1545	err_free:
1546	input_free_device(dev: wdata->extension.input);
1547	wdata->extension.input = NULL;
1548	return ret;
1549	}
1550
1551	static void wiimod_bboard_remove(const struct wiimod_ops *ops,
1552	struct wiimote_data *wdata)
1553	{
1554	if (!wdata->extension.input)
1555	return;
1556
1557	input_unregister_device(wdata->extension.input);
1558	wdata->extension.input = NULL;
1559	device_remove_file(dev: &wdata->hdev->dev,
1560	attr: &dev_attr_bboard_calib);
1561	}
1562
1563	static const struct wiimod_ops wiimod_bboard = {
1564	.flags = WIIMOD_FLAG_EXT8,
1565	.arg = 0,
1566	.probe = wiimod_bboard_probe,
1567	.remove = wiimod_bboard_remove,
1568	.in_keys = wiimod_bboard_in_keys,
1569	.in_ext = wiimod_bboard_in_ext,
1570	};
1571
1572	/*
1573	* Pro Controller
1574	* Released with the Wii U was the Nintendo Wii U Pro Controller. It does not
1575	* work together with the classic Wii, but only with the new Wii U. However, it
1576	* uses the same protocol and provides a builtin "classic controller pro"
1577	* extension, few standard buttons, a rumble motor, 4 LEDs and a battery.
1578	* We provide all these via a standard extension device as the device doesn't
1579	* feature an extension port.
1580	*/
1581
1582	enum wiimod_pro_keys {
1583	WIIMOD_PRO_KEY_A,
1584	WIIMOD_PRO_KEY_B,
1585	WIIMOD_PRO_KEY_X,
1586	WIIMOD_PRO_KEY_Y,
1587	WIIMOD_PRO_KEY_PLUS,
1588	WIIMOD_PRO_KEY_MINUS,
1589	WIIMOD_PRO_KEY_HOME,
1590	WIIMOD_PRO_KEY_LEFT,
1591	WIIMOD_PRO_KEY_RIGHT,
1592	WIIMOD_PRO_KEY_UP,
1593	WIIMOD_PRO_KEY_DOWN,
1594	WIIMOD_PRO_KEY_TL,
1595	WIIMOD_PRO_KEY_TR,
1596	WIIMOD_PRO_KEY_ZL,
1597	WIIMOD_PRO_KEY_ZR,
1598	WIIMOD_PRO_KEY_THUMBL,
1599	WIIMOD_PRO_KEY_THUMBR,
1600	WIIMOD_PRO_KEY_NUM,
1601	};
1602
1603	static const __u16 wiimod_pro_map[] = {
1604	BTN_EAST, /* WIIMOD_PRO_KEY_A */
1605	BTN_SOUTH, /* WIIMOD_PRO_KEY_B */
1606	BTN_NORTH, /* WIIMOD_PRO_KEY_X */
1607	BTN_WEST, /* WIIMOD_PRO_KEY_Y */
1608	BTN_START, /* WIIMOD_PRO_KEY_PLUS */
1609	BTN_SELECT, /* WIIMOD_PRO_KEY_MINUS */
1610	BTN_MODE, /* WIIMOD_PRO_KEY_HOME */
1611	BTN_DPAD_LEFT, /* WIIMOD_PRO_KEY_LEFT */
1612	BTN_DPAD_RIGHT, /* WIIMOD_PRO_KEY_RIGHT */
1613	BTN_DPAD_UP, /* WIIMOD_PRO_KEY_UP */
1614	BTN_DPAD_DOWN, /* WIIMOD_PRO_KEY_DOWN */
1615	BTN_TL, /* WIIMOD_PRO_KEY_TL */
1616	BTN_TR, /* WIIMOD_PRO_KEY_TR */
1617	BTN_TL2, /* WIIMOD_PRO_KEY_ZL */
1618	BTN_TR2, /* WIIMOD_PRO_KEY_ZR */
1619	BTN_THUMBL, /* WIIMOD_PRO_KEY_THUMBL */
1620	BTN_THUMBR, /* WIIMOD_PRO_KEY_THUMBR */
1621	};
1622
1623	static void wiimod_pro_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1624	{
1625	__s16 rx, ry, lx, ly;
1626
1627	/* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
1628	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1629	* 1 | LX <7:0> |
1630	* -----+-----------------------+-----------------------+
1631	* 2 | 0 0 0 0 | LX <11:8> |
1632	* -----+-----------------------+-----------------------+
1633	* 3 | RX <7:0> |
1634	* -----+-----------------------+-----------------------+
1635	* 4 | 0 0 0 0 | RX <11:8> |
1636	* -----+-----------------------+-----------------------+
1637	* 5 | LY <7:0> |
1638	* -----+-----------------------+-----------------------+
1639	* 6 | 0 0 0 0 | LY <11:8> |
1640	* -----+-----------------------+-----------------------+
1641	* 7 | RY <7:0> |
1642	* -----+-----------------------+-----------------------+
1643	* 8 | 0 0 0 0 | RY <11:8> |
1644	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1645	* 9 | BDR | BDD | BLT | B- | BH | B+ | BRT | 1 |
1646	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1647	* 10 | BZL | BB | BY | BA | BX | BZR | BDL | BDU |
1648	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
1649	* 11 | 1 | BATTERY | USB |CHARG|LTHUM|RTHUM|
1650	* -----+-----+-----------------+-----------+-----+-----+
1651	* All buttons are low-active (0 if pressed)
1652	* RX and RY are right analog stick
1653	* LX and LY are left analog stick
1654	* BLT is left trigger, BRT is right trigger.
1655	* BDR, BDD, BDL, BDU form the D-Pad with right, down, left, up buttons
1656	* BZL is left Z button and BZR is right Z button
1657	* B-, BH, B+ are +, HOME and - buttons
1658	* BB, BY, BA, BX are A, B, X, Y buttons
1659	*
1660	* Bits marked as 0/1 are unknown and never changed during tests.
1661	*
1662	* Not entirely verified:
1663	* CHARG: 1 if uncharging, 0 if charging
1664	* USB: 1 if not connected, 0 if connected
1665	* BATTERY: battery capacity from 000 (empty) to 100 (full)
1666	*/
1667
1668	lx = (ext[0] & 0xff) | ((ext[1] & 0x0f) << 8);
1669	rx = (ext[2] & 0xff) | ((ext[3] & 0x0f) << 8);
1670	ly = (ext[4] & 0xff) | ((ext[5] & 0x0f) << 8);
1671	ry = (ext[6] & 0xff) | ((ext[7] & 0x0f) << 8);
1672
1673	/* zero-point offsets */
1674	lx -= 0x800;
1675	ly = 0x800 - ly;
1676	rx -= 0x800;
1677	ry = 0x800 - ry;
1678
1679	/* Trivial automatic calibration. We don't know any calibration data
1680	* in the EEPROM so we must use the first report to calibrate the
1681	* null-position of the analog sticks. Users can retrigger calibration
1682	* via sysfs, or set it explicitly. If data is off more than abs(500),
1683	* we skip calibration as the sticks are likely to be moved already. */
1684	if (!(wdata->state.flags & WIIPROTO_FLAG_PRO_CALIB_DONE)) {
1685	wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1686	if (abs(lx) < 500)
1687	wdata->state.calib_pro_sticks[0] = -lx;
1688	if (abs(ly) < 500)
1689	wdata->state.calib_pro_sticks[1] = -ly;
1690	if (abs(rx) < 500)
1691	wdata->state.calib_pro_sticks[2] = -rx;
1692	if (abs(ry) < 500)
1693	wdata->state.calib_pro_sticks[3] = -ry;
1694	}
1695
1696	/* apply calibration data */
1697	lx += wdata->state.calib_pro_sticks[0];
1698	ly += wdata->state.calib_pro_sticks[1];
1699	rx += wdata->state.calib_pro_sticks[2];
1700	ry += wdata->state.calib_pro_sticks[3];
1701
1702	input_report_abs(dev: wdata->extension.input, ABS_X, value: lx);
1703	input_report_abs(dev: wdata->extension.input, ABS_Y, value: ly);
1704	input_report_abs(dev: wdata->extension.input, ABS_RX, value: rx);
1705	input_report_abs(dev: wdata->extension.input, ABS_RY, value: ry);
1706
1707	input_report_key(dev: wdata->extension.input,
1708	code: wiimod_pro_map[WIIMOD_PRO_KEY_RIGHT],
1709	value: !(ext[8] & 0x80));
1710	input_report_key(dev: wdata->extension.input,
1711	code: wiimod_pro_map[WIIMOD_PRO_KEY_DOWN],
1712	value: !(ext[8] & 0x40));
1713	input_report_key(dev: wdata->extension.input,
1714	code: wiimod_pro_map[WIIMOD_PRO_KEY_TL],
1715	value: !(ext[8] & 0x20));
1716	input_report_key(dev: wdata->extension.input,
1717	code: wiimod_pro_map[WIIMOD_PRO_KEY_MINUS],
1718	value: !(ext[8] & 0x10));
1719	input_report_key(dev: wdata->extension.input,
1720	code: wiimod_pro_map[WIIMOD_PRO_KEY_HOME],
1721	value: !(ext[8] & 0x08));
1722	input_report_key(dev: wdata->extension.input,
1723	code: wiimod_pro_map[WIIMOD_PRO_KEY_PLUS],
1724	value: !(ext[8] & 0x04));
1725	input_report_key(dev: wdata->extension.input,
1726	code: wiimod_pro_map[WIIMOD_PRO_KEY_TR],
1727	value: !(ext[8] & 0x02));
1728
1729	input_report_key(dev: wdata->extension.input,
1730	code: wiimod_pro_map[WIIMOD_PRO_KEY_ZL],
1731	value: !(ext[9] & 0x80));
1732	input_report_key(dev: wdata->extension.input,
1733	code: wiimod_pro_map[WIIMOD_PRO_KEY_B],
1734	value: !(ext[9] & 0x40));
1735	input_report_key(dev: wdata->extension.input,
1736	code: wiimod_pro_map[WIIMOD_PRO_KEY_Y],
1737	value: !(ext[9] & 0x20));
1738	input_report_key(dev: wdata->extension.input,
1739	code: wiimod_pro_map[WIIMOD_PRO_KEY_A],
1740	value: !(ext[9] & 0x10));
1741	input_report_key(dev: wdata->extension.input,
1742	code: wiimod_pro_map[WIIMOD_PRO_KEY_X],
1743	value: !(ext[9] & 0x08));
1744	input_report_key(dev: wdata->extension.input,
1745	code: wiimod_pro_map[WIIMOD_PRO_KEY_ZR],
1746	value: !(ext[9] & 0x04));
1747	input_report_key(dev: wdata->extension.input,
1748	code: wiimod_pro_map[WIIMOD_PRO_KEY_LEFT],
1749	value: !(ext[9] & 0x02));
1750	input_report_key(dev: wdata->extension.input,
1751	code: wiimod_pro_map[WIIMOD_PRO_KEY_UP],
1752	value: !(ext[9] & 0x01));
1753
1754	input_report_key(dev: wdata->extension.input,
1755	code: wiimod_pro_map[WIIMOD_PRO_KEY_THUMBL],
1756	value: !(ext[10] & 0x02));
1757	input_report_key(dev: wdata->extension.input,
1758	code: wiimod_pro_map[WIIMOD_PRO_KEY_THUMBR],
1759	value: !(ext[10] & 0x01));
1760
1761	input_sync(dev: wdata->extension.input);
1762	}
1763
1764	static int wiimod_pro_open(struct input_dev *dev)
1765	{
1766	struct wiimote_data *wdata = input_get_drvdata(dev);
1767	unsigned long flags;
1768
1769	spin_lock_irqsave(&wdata->state.lock, flags);
1770	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
1771	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1772	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1773
1774	return 0;
1775	}
1776
1777	static void wiimod_pro_close(struct input_dev *dev)
1778	{
1779	struct wiimote_data *wdata = input_get_drvdata(dev);
1780	unsigned long flags;
1781
1782	spin_lock_irqsave(&wdata->state.lock, flags);
1783	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
1784	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
1785	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1786	}
1787
1788	static int wiimod_pro_play(struct input_dev *dev, void *data,
1789	struct ff_effect *eff)
1790	{
1791	struct wiimote_data *wdata = input_get_drvdata(dev);
1792	__u8 value;
1793
1794	/*
1795	* The wiimote supports only a single rumble motor so if any magnitude
1796	* is set to non-zero then we start the rumble motor. If both are set to
1797	* zero, we stop the rumble motor.
1798	*/
1799
1800	if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
1801	value = 1;
1802	else
1803	value = 0;
1804
1805	/* Locking state.lock here might deadlock with input_event() calls.
1806	* schedule_work acts as barrier. Merging multiple changes is fine. */
1807	wdata->state.cache_rumble = value;
1808	schedule_work(work: &wdata->rumble_worker);
1809
1810	return 0;
1811	}
1812
1813	static ssize_t wiimod_pro_calib_show(struct device *dev,
1814	struct device_attribute *attr,
1815	char *out)
1816	{
1817	struct wiimote_data *wdata = dev_to_wii(dev);
1818	int r;
1819
1820	r = 0;
1821	r += sprintf(buf: &out[r], fmt: "%+06hd:", wdata->state.calib_pro_sticks[0]);
1822	r += sprintf(buf: &out[r], fmt: "%+06hd ", wdata->state.calib_pro_sticks[1]);
1823	r += sprintf(buf: &out[r], fmt: "%+06hd:", wdata->state.calib_pro_sticks[2]);
1824	r += sprintf(buf: &out[r], fmt: "%+06hd\n", wdata->state.calib_pro_sticks[3]);
1825
1826	return r;
1827	}
1828
1829	static ssize_t wiimod_pro_calib_store(struct device *dev,
1830	struct device_attribute *attr,
1831	const char *buf, size_t count)
1832	{
1833	struct wiimote_data *wdata = dev_to_wii(dev);
1834	int r;
1835	s16 x1, y1, x2, y2;
1836
1837	if (!strncmp(buf, "scan\n", 5)) {
1838	spin_lock_irq(lock: &wdata->state.lock);
1839	wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1840	spin_unlock_irq(lock: &wdata->state.lock);
1841	} else {
1842	r = sscanf(buf, "%hd:%hd %hd:%hd", &x1, &y1, &x2, &y2);
1843	if (r != 4)
1844	return -EINVAL;
1845
1846	spin_lock_irq(lock: &wdata->state.lock);
1847	wdata->state.flags |= WIIPROTO_FLAG_PRO_CALIB_DONE;
1848	spin_unlock_irq(lock: &wdata->state.lock);
1849
1850	wdata->state.calib_pro_sticks[0] = x1;
1851	wdata->state.calib_pro_sticks[1] = y1;
1852	wdata->state.calib_pro_sticks[2] = x2;
1853	wdata->state.calib_pro_sticks[3] = y2;
1854	}
1855
1856	return strnlen(p: buf, PAGE_SIZE);
1857	}
1858
1859	static DEVICE_ATTR(pro_calib, S_IRUGO|S_IWUSR|S_IWGRP, wiimod_pro_calib_show,
1860	wiimod_pro_calib_store);
1861
1862	static int wiimod_pro_probe(const struct wiimod_ops *ops,
1863	struct wiimote_data *wdata)
1864	{
1865	int ret, i;
1866	unsigned long flags;
1867
1868	INIT_WORK(&wdata->rumble_worker, wiimod_rumble_worker);
1869	wdata->state.calib_pro_sticks[0] = 0;
1870	wdata->state.calib_pro_sticks[1] = 0;
1871	wdata->state.calib_pro_sticks[2] = 0;
1872	wdata->state.calib_pro_sticks[3] = 0;
1873
1874	spin_lock_irqsave(&wdata->state.lock, flags);
1875	wdata->state.flags &= ~WIIPROTO_FLAG_PRO_CALIB_DONE;
1876	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1877
1878	wdata->extension.input = input_allocate_device();
1879	if (!wdata->extension.input)
1880	return -ENOMEM;
1881
1882	set_bit(FF_RUMBLE, addr: wdata->extension.input->ffbit);
1883	input_set_drvdata(dev: wdata->extension.input, data: wdata);
1884
1885	if (input_ff_create_memless(dev: wdata->extension.input, NULL,
1886	play_effect: wiimod_pro_play)) {
1887	ret = -ENOMEM;
1888	goto err_free;
1889	}
1890
1891	ret = device_create_file(device: &wdata->hdev->dev,
1892	entry: &dev_attr_pro_calib);
1893	if (ret) {
1894	hid_err(wdata->hdev, "cannot create sysfs attribute\n");
1895	goto err_free;
1896	}
1897
1898	wdata->extension.input->open = wiimod_pro_open;
1899	wdata->extension.input->close = wiimod_pro_close;
1900	wdata->extension.input->dev.parent = &wdata->hdev->dev;
1901	wdata->extension.input->id.bustype = wdata->hdev->bus;
1902	wdata->extension.input->id.vendor = wdata->hdev->vendor;
1903	wdata->extension.input->id.product = wdata->hdev->product;
1904	wdata->extension.input->id.version = wdata->hdev->version;
1905	wdata->extension.input->name = WIIMOTE_NAME " Pro Controller";
1906
1907	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
1908	for (i = 0; i < WIIMOD_PRO_KEY_NUM; ++i)
1909	set_bit(nr: wiimod_pro_map[i],
1910	addr: wdata->extension.input->keybit);
1911
1912	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
1913	set_bit(ABS_X, addr: wdata->extension.input->absbit);
1914	set_bit(ABS_Y, addr: wdata->extension.input->absbit);
1915	set_bit(ABS_RX, addr: wdata->extension.input->absbit);
1916	set_bit(ABS_RY, addr: wdata->extension.input->absbit);
1917	input_set_abs_params(dev: wdata->extension.input,
1918	ABS_X, min: -0x400, max: 0x400, fuzz: 4, flat: 100);
1919	input_set_abs_params(dev: wdata->extension.input,
1920	ABS_Y, min: -0x400, max: 0x400, fuzz: 4, flat: 100);
1921	input_set_abs_params(dev: wdata->extension.input,
1922	ABS_RX, min: -0x400, max: 0x400, fuzz: 4, flat: 100);
1923	input_set_abs_params(dev: wdata->extension.input,
1924	ABS_RY, min: -0x400, max: 0x400, fuzz: 4, flat: 100);
1925
1926	ret = input_register_device(wdata->extension.input);
1927	if (ret)
1928	goto err_file;
1929
1930	return 0;
1931
1932	err_file:
1933	device_remove_file(dev: &wdata->hdev->dev,
1934	attr: &dev_attr_pro_calib);
1935	err_free:
1936	input_free_device(dev: wdata->extension.input);
1937	wdata->extension.input = NULL;
1938	return ret;
1939	}
1940
1941	static void wiimod_pro_remove(const struct wiimod_ops *ops,
1942	struct wiimote_data *wdata)
1943	{
1944	unsigned long flags;
1945
1946	if (!wdata->extension.input)
1947	return;
1948
1949	input_unregister_device(wdata->extension.input);
1950	wdata->extension.input = NULL;
1951	cancel_work_sync(work: &wdata->rumble_worker);
1952	device_remove_file(dev: &wdata->hdev->dev,
1953	attr: &dev_attr_pro_calib);
1954
1955	spin_lock_irqsave(&wdata->state.lock, flags);
1956	wiiproto_req_rumble(wdata, rumble: 0);
1957	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
1958	}
1959
1960	static const struct wiimod_ops wiimod_pro = {
1961	.flags = WIIMOD_FLAG_EXT16,
1962	.arg = 0,
1963	.probe = wiimod_pro_probe,
1964	.remove = wiimod_pro_remove,
1965	.in_ext = wiimod_pro_in_ext,
1966	};
1967
1968	/*
1969	* Drums
1970	* Guitar-Hero, Rock-Band and other games came bundled with drums which can
1971	* be plugged as extension to a Wiimote. Drum-reports are still not entirely
1972	* figured out, but the most important information is known.
1973	* We create a separate device for drums and report all information via this
1974	* input device.
1975	*/
1976
1977	static inline void wiimod_drums_report_pressure(struct wiimote_data *wdata,
1978	__u8 none, __u8 which,
1979	__u8 pressure, __u8 onoff,
1980	__u8 *store, __u16 code,
1981	__u8 which_code)
1982	{
1983	static const __u8 default_pressure = 3;
1984
1985	if (!none && which == which_code) {
1986	*store = pressure;
1987	input_report_abs(dev: wdata->extension.input, code, value: *store);
1988	} else if (onoff != !!*store) {
1989	*store = onoff ? default_pressure : 0;
1990	input_report_abs(dev: wdata->extension.input, code, value: *store);
1991	}
1992	}
1993
1994	static void wiimod_drums_in_ext(struct wiimote_data *wdata, const __u8 *ext)
1995	{
1996	__u8 pressure, which, none, hhp, sx, sy;
1997	__u8 o, r, y, g, b, bass, bm, bp;
1998
1999	/* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
2000	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2001	* 1 | 0 | 0 | SX <5:0> |
2002	* 2 | 0 | 0 | SY <5:0> |
2003	* -----+-----+-----+-----------------------------+-----+
2004	* 3 | HPP | NON | WHICH <5:1> | ? |
2005	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2006	* 4 | SOFT <7:5> | 0 | 1 | 1 | 0 | ? |
2007	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2008	* 5 | ? | 1 | 1 | B- | 1 | B+ | 1 | ? |
2009	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2010	* 6 | O | R | Y | G | B | BSS | 1 | 1 |
2011	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2012	* All buttons are 0 if pressed
2013	*
2014	* With Motion+ enabled, the following bits will get invalid:
2015	* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
2016	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2017	* 1 | 0 | 0 | SX <5:1> |XXXXX|
2018	* 2 | 0 | 0 | SY <5:1> |XXXXX|
2019	* -----+-----+-----+-----------------------------+-----+
2020	* 3 | HPP | NON | WHICH <5:1> | ? |
2021	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2022	* 4 | SOFT <7:5> | 0 | 1 | 1 | 0 | ? |
2023	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2024	* 5 | ? | 1 | 1 | B- | 1 | B+ | 1 |XXXXX|
2025	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2026	* 6 | O | R | Y | G | B | BSS |XXXXX|XXXXX|
2027	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2028	*/
2029
2030	pressure = 7 - (ext[3] >> 5);
2031	which = (ext[2] >> 1) & 0x1f;
2032	none = !!(ext[2] & 0x40);
2033	hhp = !(ext[2] & 0x80);
2034	sx = ext[0] & 0x3f;
2035	sy = ext[1] & 0x3f;
2036	o = !(ext[5] & 0x80);
2037	r = !(ext[5] & 0x40);
2038	y = !(ext[5] & 0x20);
2039	g = !(ext[5] & 0x10);
2040	b = !(ext[5] & 0x08);
2041	bass = !(ext[5] & 0x04);
2042	bm = !(ext[4] & 0x10);
2043	bp = !(ext[4] & 0x04);
2044
2045	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2046	sx &= 0x3e;
2047	sy &= 0x3e;
2048	}
2049
2050	wiimod_drums_report_pressure(wdata, none, which, pressure,
2051	onoff: o, store: &wdata->state.pressure_drums[0],
2052	ABS_HAT2Y, which_code: 0x0e);
2053	wiimod_drums_report_pressure(wdata, none, which, pressure,
2054	onoff: r, store: &wdata->state.pressure_drums[1],
2055	ABS_HAT0X, which_code: 0x19);
2056	wiimod_drums_report_pressure(wdata, none, which, pressure,
2057	onoff: y, store: &wdata->state.pressure_drums[2],
2058	ABS_HAT2X, which_code: 0x11);
2059	wiimod_drums_report_pressure(wdata, none, which, pressure,
2060	onoff: g, store: &wdata->state.pressure_drums[3],
2061	ABS_HAT1X, which_code: 0x12);
2062	wiimod_drums_report_pressure(wdata, none, which, pressure,
2063	onoff: b, store: &wdata->state.pressure_drums[4],
2064	ABS_HAT0Y, which_code: 0x0f);
2065
2066	/* Bass shares pressure with hi-hat (set via hhp) */
2067	wiimod_drums_report_pressure(wdata, none, which: hhp ? 0xff : which, pressure,
2068	onoff: bass, store: &wdata->state.pressure_drums[5],
2069	ABS_HAT3X, which_code: 0x1b);
2070	/* Hi-hat has no on/off values, just pressure. Force to off/0. */
2071	wiimod_drums_report_pressure(wdata, none, which: hhp ? which : 0xff, pressure,
2072	onoff: 0, store: &wdata->state.pressure_drums[6],
2073	ABS_HAT3Y, which_code: 0x0e);
2074
2075	input_report_abs(dev: wdata->extension.input, ABS_X, value: sx - 0x20);
2076	input_report_abs(dev: wdata->extension.input, ABS_Y, value: sy - 0x20);
2077
2078	input_report_key(dev: wdata->extension.input, BTN_START, value: bp);
2079	input_report_key(dev: wdata->extension.input, BTN_SELECT, value: bm);
2080
2081	input_sync(dev: wdata->extension.input);
2082	}
2083
2084	static int wiimod_drums_open(struct input_dev *dev)
2085	{
2086	struct wiimote_data *wdata = input_get_drvdata(dev);
2087	unsigned long flags;
2088
2089	spin_lock_irqsave(&wdata->state.lock, flags);
2090	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2091	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2092	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2093
2094	return 0;
2095	}
2096
2097	static void wiimod_drums_close(struct input_dev *dev)
2098	{
2099	struct wiimote_data *wdata = input_get_drvdata(dev);
2100	unsigned long flags;
2101
2102	spin_lock_irqsave(&wdata->state.lock, flags);
2103	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2104	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2105	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2106	}
2107
2108	static int wiimod_drums_probe(const struct wiimod_ops *ops,
2109	struct wiimote_data *wdata)
2110	{
2111	int ret;
2112
2113	wdata->extension.input = input_allocate_device();
2114	if (!wdata->extension.input)
2115	return -ENOMEM;
2116
2117	input_set_drvdata(dev: wdata->extension.input, data: wdata);
2118	wdata->extension.input->open = wiimod_drums_open;
2119	wdata->extension.input->close = wiimod_drums_close;
2120	wdata->extension.input->dev.parent = &wdata->hdev->dev;
2121	wdata->extension.input->id.bustype = wdata->hdev->bus;
2122	wdata->extension.input->id.vendor = wdata->hdev->vendor;
2123	wdata->extension.input->id.product = wdata->hdev->product;
2124	wdata->extension.input->id.version = wdata->hdev->version;
2125	wdata->extension.input->name = WIIMOTE_NAME " Drums";
2126
2127	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
2128	set_bit(BTN_START, addr: wdata->extension.input->keybit);
2129	set_bit(BTN_SELECT, addr: wdata->extension.input->keybit);
2130
2131	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
2132	set_bit(ABS_X, addr: wdata->extension.input->absbit);
2133	set_bit(ABS_Y, addr: wdata->extension.input->absbit);
2134	set_bit(ABS_HAT0X, addr: wdata->extension.input->absbit);
2135	set_bit(ABS_HAT0Y, addr: wdata->extension.input->absbit);
2136	set_bit(ABS_HAT1X, addr: wdata->extension.input->absbit);
2137	set_bit(ABS_HAT2X, addr: wdata->extension.input->absbit);
2138	set_bit(ABS_HAT2Y, addr: wdata->extension.input->absbit);
2139	set_bit(ABS_HAT3X, addr: wdata->extension.input->absbit);
2140	set_bit(ABS_HAT3Y, addr: wdata->extension.input->absbit);
2141	input_set_abs_params(dev: wdata->extension.input,
2142	ABS_X, min: -32, max: 31, fuzz: 1, flat: 1);
2143	input_set_abs_params(dev: wdata->extension.input,
2144	ABS_Y, min: -32, max: 31, fuzz: 1, flat: 1);
2145	input_set_abs_params(dev: wdata->extension.input,
2146	ABS_HAT0X, min: 0, max: 7, fuzz: 0, flat: 0);
2147	input_set_abs_params(dev: wdata->extension.input,
2148	ABS_HAT0Y, min: 0, max: 7, fuzz: 0, flat: 0);
2149	input_set_abs_params(dev: wdata->extension.input,
2150	ABS_HAT1X, min: 0, max: 7, fuzz: 0, flat: 0);
2151	input_set_abs_params(dev: wdata->extension.input,
2152	ABS_HAT2X, min: 0, max: 7, fuzz: 0, flat: 0);
2153	input_set_abs_params(dev: wdata->extension.input,
2154	ABS_HAT2Y, min: 0, max: 7, fuzz: 0, flat: 0);
2155	input_set_abs_params(dev: wdata->extension.input,
2156	ABS_HAT3X, min: 0, max: 7, fuzz: 0, flat: 0);
2157	input_set_abs_params(dev: wdata->extension.input,
2158	ABS_HAT3Y, min: 0, max: 7, fuzz: 0, flat: 0);
2159
2160	ret = input_register_device(wdata->extension.input);
2161	if (ret)
2162	goto err_free;
2163
2164	return 0;
2165
2166	err_free:
2167	input_free_device(dev: wdata->extension.input);
2168	wdata->extension.input = NULL;
2169	return ret;
2170	}
2171
2172	static void wiimod_drums_remove(const struct wiimod_ops *ops,
2173	struct wiimote_data *wdata)
2174	{
2175	if (!wdata->extension.input)
2176	return;
2177
2178	input_unregister_device(wdata->extension.input);
2179	wdata->extension.input = NULL;
2180	}
2181
2182	static const struct wiimod_ops wiimod_drums = {
2183	.flags = 0,
2184	.arg = 0,
2185	.probe = wiimod_drums_probe,
2186	.remove = wiimod_drums_remove,
2187	.in_ext = wiimod_drums_in_ext,
2188	};
2189
2190	/*
2191	* Guitar
2192	* Guitar-Hero, Rock-Band and other games came bundled with guitars which can
2193	* be plugged as extension to a Wiimote.
2194	* We create a separate device for guitars and report all information via this
2195	* input device.
2196	*/
2197
2198	enum wiimod_guitar_keys {
2199	WIIMOD_GUITAR_KEY_G,
2200	WIIMOD_GUITAR_KEY_R,
2201	WIIMOD_GUITAR_KEY_Y,
2202	WIIMOD_GUITAR_KEY_B,
2203	WIIMOD_GUITAR_KEY_O,
2204	WIIMOD_GUITAR_KEY_UP,
2205	WIIMOD_GUITAR_KEY_DOWN,
2206	WIIMOD_GUITAR_KEY_PLUS,
2207	WIIMOD_GUITAR_KEY_MINUS,
2208	WIIMOD_GUITAR_KEY_NUM,
2209	};
2210
2211	static const __u16 wiimod_guitar_map[] = {
2212	BTN_1, /* WIIMOD_GUITAR_KEY_G */
2213	BTN_2, /* WIIMOD_GUITAR_KEY_R */
2214	BTN_3, /* WIIMOD_GUITAR_KEY_Y */
2215	BTN_4, /* WIIMOD_GUITAR_KEY_B */
2216	BTN_5, /* WIIMOD_GUITAR_KEY_O */
2217	BTN_DPAD_UP, /* WIIMOD_GUITAR_KEY_UP */
2218	BTN_DPAD_DOWN, /* WIIMOD_GUITAR_KEY_DOWN */
2219	BTN_START, /* WIIMOD_GUITAR_KEY_PLUS */
2220	BTN_SELECT, /* WIIMOD_GUITAR_KEY_MINUS */
2221	};
2222
2223	static void wiimod_guitar_in_ext(struct wiimote_data *wdata, const __u8 *ext)
2224	{
2225	__u8 sx, sy, tb, wb, bd, bm, bp, bo, br, bb, bg, by, bu;
2226
2227	/* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
2228	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2229	* 1 | 0 | 0 | SX <5:0> |
2230	* 2 | 0 | 0 | SY <5:0> |
2231	* -----+-----+-----+-----+-----------------------------+
2232	* 3 | 0 | 0 | 0 | TB <4:0> |
2233	* -----+-----+-----+-----+-----------------------------+
2234	* 4 | 0 | 0 | 0 | WB <4:0> |
2235	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2236	* 5 | 1 | BD | 1 | B- | 1 | B+ | 1 | 1 |
2237	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2238	* 6 | BO | BR | BB | BG | BY | 1 | 1 | BU |
2239	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2240	* All buttons are 0 if pressed
2241	*
2242	* With Motion+ enabled, it will look like this:
2243	* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
2244	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2245	* 1 | 0 | 0 | SX <5:1> | BU |
2246	* 2 | 0 | 0 | SY <5:1> | 1 |
2247	* -----+-----+-----+-----+-----------------------+-----+
2248	* 3 | 0 | 0 | 0 | TB <4:0> |
2249	* -----+-----+-----+-----+-----------------------------+
2250	* 4 | 0 | 0 | 0 | WB <4:0> |
2251	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2252	* 5 | 1 | BD | 1 | B- | 1 | B+ | 1 |XXXXX|
2253	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2254	* 6 | BO | BR | BB | BG | BY | 1 |XXXXX|XXXXX|
2255	* -----+-----+-----+-----+-----+-----+-----+-----+-----+
2256	*/
2257
2258	sx = ext[0] & 0x3f;
2259	sy = ext[1] & 0x3f;
2260	tb = ext[2] & 0x1f;
2261	wb = ext[3] & 0x1f;
2262	bd = !(ext[4] & 0x40);
2263	bm = !(ext[4] & 0x10);
2264	bp = !(ext[4] & 0x04);
2265	bo = !(ext[5] & 0x80);
2266	br = !(ext[5] & 0x40);
2267	bb = !(ext[5] & 0x20);
2268	bg = !(ext[5] & 0x10);
2269	by = !(ext[5] & 0x08);
2270	bu = !(ext[5] & 0x01);
2271
2272	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2273	bu = !(ext[0] & 0x01);
2274	sx &= 0x3e;
2275	sy &= 0x3e;
2276	}
2277
2278	input_report_abs(dev: wdata->extension.input, ABS_X, value: sx - 0x20);
2279	input_report_abs(dev: wdata->extension.input, ABS_Y, value: sy - 0x20);
2280	input_report_abs(dev: wdata->extension.input, ABS_HAT0X, value: tb);
2281	input_report_abs(dev: wdata->extension.input, ABS_HAT1X, value: wb - 0x10);
2282
2283	input_report_key(dev: wdata->extension.input,
2284	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_G],
2285	value: bg);
2286	input_report_key(dev: wdata->extension.input,
2287	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_R],
2288	value: br);
2289	input_report_key(dev: wdata->extension.input,
2290	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_Y],
2291	value: by);
2292	input_report_key(dev: wdata->extension.input,
2293	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_B],
2294	value: bb);
2295	input_report_key(dev: wdata->extension.input,
2296	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_O],
2297	value: bo);
2298	input_report_key(dev: wdata->extension.input,
2299	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_UP],
2300	value: bu);
2301	input_report_key(dev: wdata->extension.input,
2302	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_DOWN],
2303	value: bd);
2304	input_report_key(dev: wdata->extension.input,
2305	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_PLUS],
2306	value: bp);
2307	input_report_key(dev: wdata->extension.input,
2308	code: wiimod_guitar_map[WIIMOD_GUITAR_KEY_MINUS],
2309	value: bm);
2310
2311	input_sync(dev: wdata->extension.input);
2312	}
2313
2314	static int wiimod_guitar_open(struct input_dev *dev)
2315	{
2316	struct wiimote_data *wdata = input_get_drvdata(dev);
2317	unsigned long flags;
2318
2319	spin_lock_irqsave(&wdata->state.lock, flags);
2320	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2321	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2322	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2323
2324	return 0;
2325	}
2326
2327	static void wiimod_guitar_close(struct input_dev *dev)
2328	{
2329	struct wiimote_data *wdata = input_get_drvdata(dev);
2330	unsigned long flags;
2331
2332	spin_lock_irqsave(&wdata->state.lock, flags);
2333	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2334	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2335	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2336	}
2337
2338	static int wiimod_guitar_probe(const struct wiimod_ops *ops,
2339	struct wiimote_data *wdata)
2340	{
2341	int ret, i;
2342
2343	wdata->extension.input = input_allocate_device();
2344	if (!wdata->extension.input)
2345	return -ENOMEM;
2346
2347	input_set_drvdata(dev: wdata->extension.input, data: wdata);
2348	wdata->extension.input->open = wiimod_guitar_open;
2349	wdata->extension.input->close = wiimod_guitar_close;
2350	wdata->extension.input->dev.parent = &wdata->hdev->dev;
2351	wdata->extension.input->id.bustype = wdata->hdev->bus;
2352	wdata->extension.input->id.vendor = wdata->hdev->vendor;
2353	wdata->extension.input->id.product = wdata->hdev->product;
2354	wdata->extension.input->id.version = wdata->hdev->version;
2355	wdata->extension.input->name = WIIMOTE_NAME " Guitar";
2356
2357	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
2358	for (i = 0; i < WIIMOD_GUITAR_KEY_NUM; ++i)
2359	set_bit(nr: wiimod_guitar_map[i],
2360	addr: wdata->extension.input->keybit);
2361
2362	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
2363	set_bit(ABS_X, addr: wdata->extension.input->absbit);
2364	set_bit(ABS_Y, addr: wdata->extension.input->absbit);
2365	set_bit(ABS_HAT0X, addr: wdata->extension.input->absbit);
2366	set_bit(ABS_HAT1X, addr: wdata->extension.input->absbit);
2367	input_set_abs_params(dev: wdata->extension.input,
2368	ABS_X, min: -32, max: 31, fuzz: 1, flat: 1);
2369	input_set_abs_params(dev: wdata->extension.input,
2370	ABS_Y, min: -32, max: 31, fuzz: 1, flat: 1);
2371	input_set_abs_params(dev: wdata->extension.input,
2372	ABS_HAT0X, min: 0, max: 0x1f, fuzz: 1, flat: 1);
2373	input_set_abs_params(dev: wdata->extension.input,
2374	ABS_HAT1X, min: 0, max: 0x0f, fuzz: 1, flat: 1);
2375
2376	ret = input_register_device(wdata->extension.input);
2377	if (ret)
2378	goto err_free;
2379
2380	return 0;
2381
2382	err_free:
2383	input_free_device(dev: wdata->extension.input);
2384	wdata->extension.input = NULL;
2385	return ret;
2386	}
2387
2388	static void wiimod_guitar_remove(const struct wiimod_ops *ops,
2389	struct wiimote_data *wdata)
2390	{
2391	if (!wdata->extension.input)
2392	return;
2393
2394	input_unregister_device(wdata->extension.input);
2395	wdata->extension.input = NULL;
2396	}
2397
2398	static const struct wiimod_ops wiimod_guitar = {
2399	.flags = 0,
2400	.arg = 0,
2401	.probe = wiimod_guitar_probe,
2402	.remove = wiimod_guitar_remove,
2403	.in_ext = wiimod_guitar_in_ext,
2404	};
2405
2406	/*
2407	* Turntable
2408	* DJ Hero came with a Turntable Controller that was plugged in
2409	* as an extension.
2410	* We create a separate device for turntables and report all information via this
2411	* input device.
2412	*/
2413
2414	enum wiimod_turntable_keys {
2415	WIIMOD_TURNTABLE_KEY_G_RIGHT,
2416	WIIMOD_TURNTABLE_KEY_R_RIGHT,
2417	WIIMOD_TURNTABLE_KEY_B_RIGHT,
2418	WIIMOD_TURNTABLE_KEY_G_LEFT,
2419	WIIMOD_TURNTABLE_KEY_R_LEFT,
2420	WIIMOD_TURNTABLE_KEY_B_LEFT,
2421	WIIMOD_TURNTABLE_KEY_EUPHORIA,
2422	WIIMOD_TURNTABLE_KEY_PLUS,
2423	WIIMOD_TURNTABLE_KEY_MINUS,
2424	WIIMOD_TURNTABLE_KEY_NUM
2425	};
2426
2427	static const __u16 wiimod_turntable_map[] = {
2428	BTN_1, /* WIIMOD_TURNTABLE_KEY_G_RIGHT */
2429	BTN_2, /* WIIMOD_TURNTABLE_KEY_R_RIGHT */
2430	BTN_3, /* WIIMOD_TURNTABLE_KEY_B_RIGHT */
2431	BTN_4, /* WIIMOD_TURNTABLE_KEY_G_LEFT */
2432	BTN_5, /* WIIMOD_TURNTABLE_KEY_R_LEFT */
2433	BTN_6, /* WIIMOD_TURNTABLE_KEY_B_LEFT */
2434	BTN_7, /* WIIMOD_TURNTABLE_KEY_EUPHORIA */
2435	BTN_START, /* WIIMOD_TURNTABLE_KEY_PLUS */
2436	BTN_SELECT, /* WIIMOD_TURNTABLE_KEY_MINUS */
2437	};
2438
2439	static void wiimod_turntable_in_ext(struct wiimote_data *wdata, const __u8 *ext)
2440	{
2441	__u8 be, cs, sx, sy, ed, rtt, rbg, rbr, rbb, ltt, lbg, lbr, lbb, bp, bm;
2442	/*
2443	* Byte | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
2444	*------+------+-----+-----+-----+-----+------+------+--------+
2445	* 0 | RTT<4:3> | SX <5:0> |
2446	* 1 | RTT<2:1> | SY <5:0> |
2447	*------+------+-----+-----+-----+-----+------+------+--------+
2448	* 2 |RTT<0>| ED<4:3> | CS<3:0> | RTT<5> |
2449	*------+------+-----+-----+-----+-----+------+------+--------+
2450	* 3 | ED<2:0> | LTT<4:0> |
2451	*------+------+-----+-----+-----+-----+------+------+--------+
2452	* 4 | 0 | 0 | LBR | B- | 0 | B+ | RBR | LTT<5> |
2453	*------+------+-----+-----+-----+-----+------+------+--------+
2454	* 5 | LBB | 0 | RBG | BE | LBG | RBB | 0 | 0 |
2455	*------+------+-----+-----+-----+-----+------+------+--------+
2456	* All pressed buttons are 0
2457	*
2458	* With Motion+ enabled, it will look like this:
2459	* Byte | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
2460	*------+------+-----+-----+-----+-----+------+------+--------+
2461	* 1 | RTT<4:3> | SX <5:1> | 0 |
2462	* 2 | RTT<2:1> | SY <5:1> | 0 |
2463	*------+------+-----+-----+-----+-----+------+------+--------+
2464	* 3 |RTT<0>| ED<4:3> | CS<3:0> | RTT<5> |
2465	*------+------+-----+-----+-----+-----+------+------+--------+
2466	* 4 | ED<2:0> | LTT<4:0> |
2467	*------+------+-----+-----+-----+-----+------+------+--------+
2468	* 5 | 0 | 0 | LBR | B- | 0 | B+ | RBR | XXXX |
2469	*------+------+-----+-----+-----+-----+------+------+--------+
2470	* 6 | LBB | 0 | RBG | BE | LBG | RBB | XXXX | XXXX |
2471	*------+------+-----+-----+-----+-----+------+------+--------+
2472	*/
2473
2474	be = !(ext[5] & 0x10);
2475	cs = ((ext[2] & 0x1e));
2476	sx = ext[0] & 0x3f;
2477	sy = ext[1] & 0x3f;
2478	ed = (ext[3] & 0xe0) >> 5;
2479	rtt = ((ext[2] & 0x01) << 5 | (ext[0] & 0xc0) >> 3 | (ext[1] & 0xc0) >> 5 | ( ext[2] & 0x80 ) >> 7);
2480	ltt = ((ext[4] & 0x01) << 5 | (ext[3] & 0x1f));
2481	rbg = !(ext[5] & 0x20);
2482	rbr = !(ext[4] & 0x02);
2483	rbb = !(ext[5] & 0x04);
2484	lbg = !(ext[5] & 0x08);
2485	lbb = !(ext[5] & 0x80);
2486	lbr = !(ext[4] & 0x20);
2487	bm = !(ext[4] & 0x10);
2488	bp = !(ext[4] & 0x04);
2489
2490	if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) {
2491	ltt = (ext[4] & 0x01) << 5;
2492	sx &= 0x3e;
2493	sy &= 0x3e;
2494	}
2495
2496	input_report_abs(dev: wdata->extension.input, ABS_X, value: sx);
2497	input_report_abs(dev: wdata->extension.input, ABS_Y, value: sy);
2498	input_report_abs(dev: wdata->extension.input, ABS_HAT0X, value: rtt);
2499	input_report_abs(dev: wdata->extension.input, ABS_HAT1X, value: ltt);
2500	input_report_abs(dev: wdata->extension.input, ABS_HAT2X, value: cs);
2501	input_report_abs(dev: wdata->extension.input, ABS_HAT3X, value: ed);
2502	input_report_key(dev: wdata->extension.input,
2503	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_G_RIGHT],
2504	value: rbg);
2505	input_report_key(dev: wdata->extension.input,
2506	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_R_RIGHT],
2507	value: rbr);
2508	input_report_key(dev: wdata->extension.input,
2509	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_B_RIGHT],
2510	value: rbb);
2511	input_report_key(dev: wdata->extension.input,
2512	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_G_LEFT],
2513	value: lbg);
2514	input_report_key(dev: wdata->extension.input,
2515	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_R_LEFT],
2516	value: lbr);
2517	input_report_key(dev: wdata->extension.input,
2518	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_B_LEFT],
2519	value: lbb);
2520	input_report_key(dev: wdata->extension.input,
2521	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_EUPHORIA],
2522	value: be);
2523	input_report_key(dev: wdata->extension.input,
2524	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_PLUS],
2525	value: bp);
2526	input_report_key(dev: wdata->extension.input,
2527	code: wiimod_turntable_map[WIIMOD_TURNTABLE_KEY_MINUS],
2528	value: bm);
2529
2530	input_sync(dev: wdata->extension.input);
2531	}
2532
2533	static int wiimod_turntable_open(struct input_dev *dev)
2534	{
2535	struct wiimote_data *wdata = input_get_drvdata(dev);
2536	unsigned long flags;
2537
2538	spin_lock_irqsave(&wdata->state.lock, flags);
2539	wdata->state.flags |= WIIPROTO_FLAG_EXT_USED;
2540	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2541	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2542
2543	return 0;
2544	}
2545
2546	static void wiimod_turntable_close(struct input_dev *dev)
2547	{
2548	struct wiimote_data *wdata = input_get_drvdata(dev);
2549	unsigned long flags;
2550
2551	spin_lock_irqsave(&wdata->state.lock, flags);
2552	wdata->state.flags &= ~WIIPROTO_FLAG_EXT_USED;
2553	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2554	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2555	}
2556
2557	static int wiimod_turntable_probe(const struct wiimod_ops *ops,
2558	struct wiimote_data *wdata)
2559	{
2560	int ret, i;
2561
2562	wdata->extension.input = input_allocate_device();
2563	if (!wdata->extension.input)
2564	return -ENOMEM;
2565
2566	input_set_drvdata(dev: wdata->extension.input, data: wdata);
2567	wdata->extension.input->open = wiimod_turntable_open;
2568	wdata->extension.input->close = wiimod_turntable_close;
2569	wdata->extension.input->dev.parent = &wdata->hdev->dev;
2570	wdata->extension.input->id.bustype = wdata->hdev->bus;
2571	wdata->extension.input->id.vendor = wdata->hdev->vendor;
2572	wdata->extension.input->id.product = wdata->hdev->product;
2573	wdata->extension.input->id.version = wdata->hdev->version;
2574	wdata->extension.input->name = WIIMOTE_NAME " Turntable";
2575
2576	set_bit(EV_KEY, addr: wdata->extension.input->evbit);
2577	for (i = 0; i < WIIMOD_TURNTABLE_KEY_NUM; ++i)
2578	set_bit(nr: wiimod_turntable_map[i],
2579	addr: wdata->extension.input->keybit);
2580
2581	set_bit(EV_ABS, addr: wdata->extension.input->evbit);
2582	set_bit(ABS_X, addr: wdata->extension.input->absbit);
2583	set_bit(ABS_Y, addr: wdata->extension.input->absbit);
2584	set_bit(ABS_HAT0X, addr: wdata->extension.input->absbit);
2585	set_bit(ABS_HAT1X, addr: wdata->extension.input->absbit);
2586	set_bit(ABS_HAT2X, addr: wdata->extension.input->absbit);
2587	set_bit(ABS_HAT3X, addr: wdata->extension.input->absbit);
2588	input_set_abs_params(dev: wdata->extension.input,
2589	ABS_X, min: 0, max: 63, fuzz: 1, flat: 0);
2590	input_set_abs_params(dev: wdata->extension.input,
2591	ABS_Y, min: 63, max: 0, fuzz: 1, flat: 0);
2592	input_set_abs_params(dev: wdata->extension.input,
2593	ABS_HAT0X, min: -8, max: 8, fuzz: 0, flat: 0);
2594	input_set_abs_params(dev: wdata->extension.input,
2595	ABS_HAT1X, min: -8, max: 8, fuzz: 0, flat: 0);
2596	input_set_abs_params(dev: wdata->extension.input,
2597	ABS_HAT2X, min: 0, max: 31, fuzz: 1, flat: 1);
2598	input_set_abs_params(dev: wdata->extension.input,
2599	ABS_HAT3X, min: 0, max: 7, fuzz: 0, flat: 0);
2600	ret = input_register_device(wdata->extension.input);
2601	if (ret)
2602	goto err_free;
2603
2604	return 0;
2605
2606	err_free:
2607	input_free_device(dev: wdata->extension.input);
2608	wdata->extension.input = NULL;
2609	return ret;
2610	}
2611
2612	static void wiimod_turntable_remove(const struct wiimod_ops *ops,
2613	struct wiimote_data *wdata)
2614	{
2615	if (!wdata->extension.input)
2616	return;
2617
2618	input_unregister_device(wdata->extension.input);
2619	wdata->extension.input = NULL;
2620	}
2621
2622	static const struct wiimod_ops wiimod_turntable = {
2623	.flags = 0,
2624	.arg = 0,
2625	.probe = wiimod_turntable_probe,
2626	.remove = wiimod_turntable_remove,
2627	.in_ext = wiimod_turntable_in_ext,
2628	};
2629
2630	/*
2631	* Builtin Motion Plus
2632	* This module simply sets the WIIPROTO_FLAG_BUILTIN_MP protocol flag which
2633	* disables polling for Motion-Plus. This should be set only for devices which
2634	* don't allow MP hotplugging.
2635	*/
2636
2637	static int wiimod_builtin_mp_probe(const struct wiimod_ops *ops,
2638	struct wiimote_data *wdata)
2639	{
2640	unsigned long flags;
2641
2642	spin_lock_irqsave(&wdata->state.lock, flags);
2643	wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2644	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2645
2646	return 0;
2647	}
2648
2649	static void wiimod_builtin_mp_remove(const struct wiimod_ops *ops,
2650	struct wiimote_data *wdata)
2651	{
2652	unsigned long flags;
2653
2654	spin_lock_irqsave(&wdata->state.lock, flags);
2655	wdata->state.flags |= WIIPROTO_FLAG_BUILTIN_MP;
2656	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2657	}
2658
2659	static const struct wiimod_ops wiimod_builtin_mp = {
2660	.flags = 0,
2661	.arg = 0,
2662	.probe = wiimod_builtin_mp_probe,
2663	.remove = wiimod_builtin_mp_remove,
2664	};
2665
2666	/*
2667	* No Motion Plus
2668	* This module simply sets the WIIPROTO_FLAG_NO_MP protocol flag which
2669	* disables motion-plus. This is needed for devices that advertise this but we
2670	* don't know how to use it (or whether it is actually present).
2671	*/
2672
2673	static int wiimod_no_mp_probe(const struct wiimod_ops *ops,
2674	struct wiimote_data *wdata)
2675	{
2676	unsigned long flags;
2677
2678	spin_lock_irqsave(&wdata->state.lock, flags);
2679	wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2680	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2681
2682	return 0;
2683	}
2684
2685	static void wiimod_no_mp_remove(const struct wiimod_ops *ops,
2686	struct wiimote_data *wdata)
2687	{
2688	unsigned long flags;
2689
2690	spin_lock_irqsave(&wdata->state.lock, flags);
2691	wdata->state.flags |= WIIPROTO_FLAG_NO_MP;
2692	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2693	}
2694
2695	static const struct wiimod_ops wiimod_no_mp = {
2696	.flags = 0,
2697	.arg = 0,
2698	.probe = wiimod_no_mp_probe,
2699	.remove = wiimod_no_mp_remove,
2700	};
2701
2702	/*
2703	* Motion Plus
2704	* The Motion Plus extension provides rotation sensors (gyro) as a small
2705	* extension device for Wii Remotes. Many devices have them built-in so
2706	* you cannot see them from the outside.
2707	* Motion Plus extensions are special because they are on a separate extension
2708	* port and allow other extensions to be used simultaneously. This is all
2709	* handled by the Wiimote Core so we don't have to deal with it.
2710	*/
2711
2712	static void wiimod_mp_in_mp(struct wiimote_data *wdata, const __u8 *ext)
2713	{
2714	__s32 x, y, z;
2715
2716	/* | 8 7 6 5 4 3 | 2 | 1 |
2717	* -----+------------------------------+-----+-----+
2718	* 1 | Yaw Speed <7:0> |
2719	* 2 | Roll Speed <7:0> |
2720	* 3 | Pitch Speed <7:0> |
2721	* -----+------------------------------+-----+-----+
2722	* 4 | Yaw Speed <13:8> | Yaw |Pitch|
2723	* -----+------------------------------+-----+-----+
2724	* 5 | Roll Speed <13:8> |Roll | Ext |
2725	* -----+------------------------------+-----+-----+
2726	* 6 | Pitch Speed <13:8> | 1 | 0 |
2727	* -----+------------------------------+-----+-----+
2728	* The single bits Yaw, Roll, Pitch in the lower right corner specify
2729	* whether the wiimote is rotating fast (0) or slow (1). Speed for slow
2730	* roation is 8192/440 units / deg/s and for fast rotation 8192/2000
2731	* units / deg/s. To get a linear scale for fast rotation we multiply
2732	* by 2000/440 = ~4.5454 and scale both fast and slow by 9 to match the
2733	* previous scale reported by this driver.
2734	* This leaves a linear scale with 8192*9/440 (~167.564) units / deg/s.
2735	* If the wiimote is not rotating the sensor reports 2^13 = 8192.
2736	* Ext specifies whether an extension is connected to the motionp.
2737	* which is parsed by wiimote-core.
2738	*/
2739
2740	x = ext[0];
2741	y = ext[1];
2742	z = ext[2];
2743
2744	x |= (((__u16)ext[3]) << 6) & 0xff00;
2745	y |= (((__u16)ext[4]) << 6) & 0xff00;
2746	z |= (((__u16)ext[5]) << 6) & 0xff00;
2747
2748	x -= 8192;
2749	y -= 8192;
2750	z -= 8192;
2751
2752	if (!(ext[3] & 0x02))
2753	x = (x * 2000 * 9) / 440;
2754	else
2755	x *= 9;
2756	if (!(ext[4] & 0x02))
2757	y = (y * 2000 * 9) / 440;
2758	else
2759	y *= 9;
2760	if (!(ext[3] & 0x01))
2761	z = (z * 2000 * 9) / 440;
2762	else
2763	z *= 9;
2764
2765	input_report_abs(dev: wdata->mp, ABS_RX, value: x);
2766	input_report_abs(dev: wdata->mp, ABS_RY, value: y);
2767	input_report_abs(dev: wdata->mp, ABS_RZ, value: z);
2768	input_sync(dev: wdata->mp);
2769	}
2770
2771	static int wiimod_mp_open(struct input_dev *dev)
2772	{
2773	struct wiimote_data *wdata = input_get_drvdata(dev);
2774	unsigned long flags;
2775
2776	spin_lock_irqsave(&wdata->state.lock, flags);
2777	wdata->state.flags |= WIIPROTO_FLAG_MP_USED;
2778	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2779	__wiimote_schedule(wdata);
2780	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2781
2782	return 0;
2783	}
2784
2785	static void wiimod_mp_close(struct input_dev *dev)
2786	{
2787	struct wiimote_data *wdata = input_get_drvdata(dev);
2788	unsigned long flags;
2789
2790	spin_lock_irqsave(&wdata->state.lock, flags);
2791	wdata->state.flags &= ~WIIPROTO_FLAG_MP_USED;
2792	wiiproto_req_drm(wdata, drm: WIIPROTO_REQ_NULL);
2793	__wiimote_schedule(wdata);
2794	spin_unlock_irqrestore(lock: &wdata->state.lock, flags);
2795	}
2796
2797	static int wiimod_mp_probe(const struct wiimod_ops *ops,
2798	struct wiimote_data *wdata)
2799	{
2800	int ret;
2801
2802	wdata->mp = input_allocate_device();
2803	if (!wdata->mp)
2804	return -ENOMEM;
2805
2806	input_set_drvdata(dev: wdata->mp, data: wdata);
2807	wdata->mp->open = wiimod_mp_open;
2808	wdata->mp->close = wiimod_mp_close;
2809	wdata->mp->dev.parent = &wdata->hdev->dev;
2810	wdata->mp->id.bustype = wdata->hdev->bus;
2811	wdata->mp->id.vendor = wdata->hdev->vendor;
2812	wdata->mp->id.product = wdata->hdev->product;
2813	wdata->mp->id.version = wdata->hdev->version;
2814	wdata->mp->name = WIIMOTE_NAME " Motion Plus";
2815
2816	set_bit(EV_ABS, addr: wdata->mp->evbit);
2817	set_bit(ABS_RX, addr: wdata->mp->absbit);
2818	set_bit(ABS_RY, addr: wdata->mp->absbit);
2819	set_bit(ABS_RZ, addr: wdata->mp->absbit);
2820	input_set_abs_params(dev: wdata->mp,
2821	ABS_RX, min: -16000, max: 16000, fuzz: 4, flat: 8);
2822	input_set_abs_params(dev: wdata->mp,
2823	ABS_RY, min: -16000, max: 16000, fuzz: 4, flat: 8);
2824	input_set_abs_params(dev: wdata->mp,
2825	ABS_RZ, min: -16000, max: 16000, fuzz: 4, flat: 8);
2826
2827	ret = input_register_device(wdata->mp);
2828	if (ret)
2829	goto err_free;
2830
2831	return 0;
2832
2833	err_free:
2834	input_free_device(dev: wdata->mp);
2835	wdata->mp = NULL;
2836	return ret;
2837	}
2838
2839	static void wiimod_mp_remove(const struct wiimod_ops *ops,
2840	struct wiimote_data *wdata)
2841	{
2842	if (!wdata->mp)
2843	return;
2844
2845	input_unregister_device(wdata->mp);
2846	wdata->mp = NULL;
2847	}
2848
2849	const struct wiimod_ops wiimod_mp = {
2850	.flags = 0,
2851	.arg = 0,
2852	.probe = wiimod_mp_probe,
2853	.remove = wiimod_mp_remove,
2854	.in_mp = wiimod_mp_in_mp,
2855	};
2856
2857	/* module table */
2858
2859	static const struct wiimod_ops wiimod_dummy;
2860
2861	const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
2862	[WIIMOD_KEYS] = &wiimod_keys,
2863	[WIIMOD_RUMBLE] = &wiimod_rumble,
2864	[WIIMOD_BATTERY] = &wiimod_battery,
2865	[WIIMOD_LED1] = &wiimod_leds[0],
2866	[WIIMOD_LED2] = &wiimod_leds[1],
2867	[WIIMOD_LED3] = &wiimod_leds[2],
2868	[WIIMOD_LED4] = &wiimod_leds[3],
2869	[WIIMOD_ACCEL] = &wiimod_accel,
2870	[WIIMOD_IR] = &wiimod_ir,
2871	[WIIMOD_BUILTIN_MP] = &wiimod_builtin_mp,
2872	[WIIMOD_NO_MP] = &wiimod_no_mp,
2873	};
2874
2875	const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM] = {
2876	[WIIMOTE_EXT_NONE] = &wiimod_dummy,
2877	[WIIMOTE_EXT_UNKNOWN] = &wiimod_dummy,
2878	[WIIMOTE_EXT_NUNCHUK] = &wiimod_nunchuk,
2879	[WIIMOTE_EXT_CLASSIC_CONTROLLER] = &wiimod_classic,
2880	[WIIMOTE_EXT_BALANCE_BOARD] = &wiimod_bboard,
2881	[WIIMOTE_EXT_PRO_CONTROLLER] = &wiimod_pro,
2882	[WIIMOTE_EXT_DRUMS] = &wiimod_drums,
2883	[WIIMOTE_EXT_GUITAR] = &wiimod_guitar,
2884	[WIIMOTE_EXT_TURNTABLE] = &wiimod_turntable,
2885	};
2886