xref: /openbmc/linux/drivers/hid/hid-wiimote.h (revision a44e4f3a) 
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef __HID_WIIMOTE_H
3 #define __HID_WIIMOTE_H
4 
5 /*
6  * HID driver for Nintendo Wii / Wii U peripherals
7  * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
8  */
9 
10 /*
11  */
12 
13 #include <linux/completion.h>
14 #include <linux/device.h>
15 #include <linux/hid.h>
16 #include <linux/input.h>
17 #include <linux/leds.h>
18 #include <linux/module.h>
19 #include <linux/mutex.h>
20 #include <linux/power_supply.h>
21 #include <linux/spinlock.h>
22 #include <linux/timer.h>
23 
24 #define WIIMOTE_NAME "Nintendo Wii Remote"
25 #define WIIMOTE_BUFSIZE 32
26 
27 #define WIIPROTO_FLAG_LED1		0x01
28 #define WIIPROTO_FLAG_LED2		0x02
29 #define WIIPROTO_FLAG_LED3		0x04
30 #define WIIPROTO_FLAG_LED4		0x08
31 #define WIIPROTO_FLAG_RUMBLE		0x10
32 #define WIIPROTO_FLAG_ACCEL		0x20
33 #define WIIPROTO_FLAG_IR_BASIC		0x40
34 #define WIIPROTO_FLAG_IR_EXT		0x80
35 #define WIIPROTO_FLAG_IR_FULL		0xc0 /* IR_BASIC | IR_EXT */
36 #define WIIPROTO_FLAG_EXT_PLUGGED	0x0100
37 #define WIIPROTO_FLAG_EXT_USED		0x0200
38 #define WIIPROTO_FLAG_EXT_ACTIVE	0x0400
39 #define WIIPROTO_FLAG_MP_PLUGGED	0x0800
40 #define WIIPROTO_FLAG_MP_USED		0x1000
41 #define WIIPROTO_FLAG_MP_ACTIVE		0x2000
42 #define WIIPROTO_FLAG_EXITING		0x4000
43 #define WIIPROTO_FLAG_DRM_LOCKED	0x8000
44 #define WIIPROTO_FLAG_BUILTIN_MP	0x010000
45 #define WIIPROTO_FLAG_NO_MP		0x020000
46 #define WIIPROTO_FLAG_PRO_CALIB_DONE	0x040000
47 
48 #define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
49 					WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
50 #define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \
51 							WIIPROTO_FLAG_IR_FULL)
52 
53 /* return flag for led \num */
54 #define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
55 
56 enum wiiproto_keys {
57 	WIIPROTO_KEY_LEFT,
58 	WIIPROTO_KEY_RIGHT,
59 	WIIPROTO_KEY_UP,
60 	WIIPROTO_KEY_DOWN,
61 	WIIPROTO_KEY_PLUS,
62 	WIIPROTO_KEY_MINUS,
63 	WIIPROTO_KEY_ONE,
64 	WIIPROTO_KEY_TWO,
65 	WIIPROTO_KEY_A,
66 	WIIPROTO_KEY_B,
67 	WIIPROTO_KEY_HOME,
68 	WIIPROTO_KEY_COUNT
69 };
70 
71 enum wiimote_devtype {
72 	WIIMOTE_DEV_PENDING,
73 	WIIMOTE_DEV_UNKNOWN,
74 	WIIMOTE_DEV_GENERIC,
75 	WIIMOTE_DEV_GEN10,
76 	WIIMOTE_DEV_GEN20,
77 	WIIMOTE_DEV_BALANCE_BOARD,
78 	WIIMOTE_DEV_PRO_CONTROLLER,
79 	WIIMOTE_DEV_NUM,
80 };
81 
82 enum wiimote_exttype {
83 	WIIMOTE_EXT_NONE,
84 	WIIMOTE_EXT_UNKNOWN,
85 	WIIMOTE_EXT_NUNCHUK,
86 	WIIMOTE_EXT_CLASSIC_CONTROLLER,
87 	WIIMOTE_EXT_BALANCE_BOARD,
88 	WIIMOTE_EXT_PRO_CONTROLLER,
89 	WIIMOTE_EXT_DRUMS,
90 	WIIMOTE_EXT_GUITAR,
91 	WIIMOTE_EXT_NUM,
92 };
93 
94 enum wiimote_mptype {
95 	WIIMOTE_MP_NONE,
96 	WIIMOTE_MP_UNKNOWN,
97 	WIIMOTE_MP_SINGLE,
98 	WIIMOTE_MP_PASSTHROUGH_NUNCHUK,
99 	WIIMOTE_MP_PASSTHROUGH_CLASSIC,
100 };
101 
102 struct wiimote_buf {
103 	__u8 data[HID_MAX_BUFFER_SIZE];
104 	size_t size;
105 };
106 
107 struct wiimote_queue {
108 	spinlock_t lock;
109 	struct work_struct worker;
110 	__u8 head;
111 	__u8 tail;
112 	struct wiimote_buf outq[WIIMOTE_BUFSIZE];
113 };
114 
115 struct wiimote_state {
116 	spinlock_t lock;
117 	__u32 flags;
118 	__u8 accel_split[2];
119 	__u8 drm;
120 	__u8 devtype;
121 	__u8 exttype;
122 	__u8 mp;
123 
124 	/* synchronous cmd requests */
125 	struct mutex sync;
126 	struct completion ready;
127 	int cmd;
128 	__u32 opt;
129 
130 	/* results of synchronous requests */
131 	__u8 cmd_battery;
132 	__u8 cmd_err;
133 	__u8 *cmd_read_buf;
134 	__u8 cmd_read_size;
135 
136 	/* calibration/cache data */
137 	__u16 calib_bboard[4][3];
138 	__s16 calib_pro_sticks[4];
139 	__u8 pressure_drums[7];
140 	__u8 cache_rumble;
141 };
142 
143 struct wiimote_data {
144 	struct hid_device *hdev;
145 	struct input_dev *input;
146 	struct work_struct rumble_worker;
147 	struct led_classdev *leds[4];
148 	struct input_dev *accel;
149 	struct input_dev *ir;
150 	struct power_supply *battery;
151 	struct power_supply_desc battery_desc;
152 	struct input_dev *mp;
153 	struct timer_list timer;
154 	struct wiimote_debug *debug;
155 
156 	union {
157 		struct input_dev *input;
158 	} extension;
159 
160 	struct wiimote_queue queue;
161 	struct wiimote_state state;
162 	struct work_struct init_worker;
163 };
164 
165 /* wiimote modules */
166 
167 enum wiimod_module {
168 	WIIMOD_KEYS,
169 	WIIMOD_RUMBLE,
170 	WIIMOD_BATTERY,
171 	WIIMOD_LED1,
172 	WIIMOD_LED2,
173 	WIIMOD_LED3,
174 	WIIMOD_LED4,
175 	WIIMOD_ACCEL,
176 	WIIMOD_IR,
177 	WIIMOD_BUILTIN_MP,
178 	WIIMOD_NO_MP,
179 	WIIMOD_NUM,
180 	WIIMOD_NULL = WIIMOD_NUM,
181 };
182 
183 #define WIIMOD_FLAG_INPUT		0x0001
184 #define WIIMOD_FLAG_EXT8		0x0002
185 #define WIIMOD_FLAG_EXT16		0x0004
186 
187 struct wiimod_ops {
188 	__u16 flags;
189 	unsigned long arg;
190 	int (*probe) (const struct wiimod_ops *ops,
191 		      struct wiimote_data *wdata);
192 	void (*remove) (const struct wiimod_ops *ops,
193 			struct wiimote_data *wdata);
194 
195 	void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys);
196 	void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel);
197 	void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed,
198 		       unsigned int id);
199 	void (*in_mp) (struct wiimote_data *wdata, const __u8 *mp);
200 	void (*in_ext) (struct wiimote_data *wdata, const __u8 *ext);
201 };
202 
203 extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM];
204 extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM];
205 extern const struct wiimod_ops wiimod_mp;
206 
207 /* wiimote requests */
208 
209 enum wiiproto_reqs {
210 	WIIPROTO_REQ_NULL = 0x0,
211 	WIIPROTO_REQ_RUMBLE = 0x10,
212 	WIIPROTO_REQ_LED = 0x11,
213 	WIIPROTO_REQ_DRM = 0x12,
214 	WIIPROTO_REQ_IR1 = 0x13,
215 	WIIPROTO_REQ_SREQ = 0x15,
216 	WIIPROTO_REQ_WMEM = 0x16,
217 	WIIPROTO_REQ_RMEM = 0x17,
218 	WIIPROTO_REQ_IR2 = 0x1a,
219 	WIIPROTO_REQ_STATUS = 0x20,
220 	WIIPROTO_REQ_DATA = 0x21,
221 	WIIPROTO_REQ_RETURN = 0x22,
222 
223 	/* DRM_K: BB*2 */
224 	WIIPROTO_REQ_DRM_K = 0x30,
225 
226 	/* DRM_KA: BB*2 AA*3 */
227 	WIIPROTO_REQ_DRM_KA = 0x31,
228 
229 	/* DRM_KE: BB*2 EE*8 */
230 	WIIPROTO_REQ_DRM_KE = 0x32,
231 
232 	/* DRM_KAI: BB*2 AA*3 II*12 */
233 	WIIPROTO_REQ_DRM_KAI = 0x33,
234 
235 	/* DRM_KEE: BB*2 EE*19 */
236 	WIIPROTO_REQ_DRM_KEE = 0x34,
237 
238 	/* DRM_KAE: BB*2 AA*3 EE*16 */
239 	WIIPROTO_REQ_DRM_KAE = 0x35,
240 
241 	/* DRM_KIE: BB*2 II*10 EE*9 */
242 	WIIPROTO_REQ_DRM_KIE = 0x36,
243 
244 	/* DRM_KAIE: BB*2 AA*3 II*10 EE*6 */
245 	WIIPROTO_REQ_DRM_KAIE = 0x37,
246 
247 	/* DRM_E: EE*21 */
248 	WIIPROTO_REQ_DRM_E = 0x3d,
249 
250 	/* DRM_SKAI1: BB*2 AA*1 II*18 */
251 	WIIPROTO_REQ_DRM_SKAI1 = 0x3e,
252 
253 	/* DRM_SKAI2: BB*2 AA*1 II*18 */
254 	WIIPROTO_REQ_DRM_SKAI2 = 0x3f,
255 
256 	WIIPROTO_REQ_MAX
257 };
258 
259 #define dev_to_wii(pdev) hid_get_drvdata(to_hid_device(pdev))
260 
261 void __wiimote_schedule(struct wiimote_data *wdata);
262 
263 extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
264 extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
265 extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds);
266 extern void wiiproto_req_status(struct wiimote_data *wdata);
267 extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel);
268 extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags);
269 extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags);
270 extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
271 						const __u8 *wmem, __u8 size);
272 extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
273 							__u8 *rmem, __u8 size);
274 
275 #define wiiproto_req_rreg(wdata, os, sz) \
276 				wiiproto_req_rmem((wdata), false, (os), (sz))
277 #define wiiproto_req_reeprom(wdata, os, sz) \
278 				wiiproto_req_rmem((wdata), true, (os), (sz))
279 extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
280 						__u32 offset, __u16 size);
281 
282 #ifdef CONFIG_DEBUG_FS
283 
284 extern int wiidebug_init(struct wiimote_data *wdata);
285 extern void wiidebug_deinit(struct wiimote_data *wdata);
286 
287 #else
288 
289 static inline int wiidebug_init(void *u) { return 0; }
290 static inline void wiidebug_deinit(void *u) { }
291 
292 #endif
293 
294 /* requires the state.lock spinlock to be held */
295 static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd,
296 								__u32 opt)
297 {
298 	return wdata->state.cmd == cmd && wdata->state.opt == opt;
299 }
300 
301 /* requires the state.lock spinlock to be held */
302 static inline void wiimote_cmd_complete(struct wiimote_data *wdata)
303 {
304 	wdata->state.cmd = WIIPROTO_REQ_NULL;
305 	complete(&wdata->state.ready);
306 }
307 
308 /* requires the state.lock spinlock to be held */
309 static inline void wiimote_cmd_abort(struct wiimote_data *wdata)
310 {
311 	/* Abort synchronous request by waking up the sleeping caller. But
312 	 * reset the state.cmd field to an invalid value so no further event
313 	 * handlers will work with it. */
314 	wdata->state.cmd = WIIPROTO_REQ_MAX;
315 	complete(&wdata->state.ready);
316 }
317 
318 static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
319 {
320 	return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
321 }
322 
323 static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata)
324 {
325 	mutex_lock(&wdata->state.sync);
326 }
327 
328 /* requires the state.lock spinlock to be held */
329 static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd,
330 								__u32 opt)
331 {
332 	reinit_completion(&wdata->state.ready);
333 	wdata->state.cmd = cmd;
334 	wdata->state.opt = opt;
335 }
336 
337 static inline void wiimote_cmd_release(struct wiimote_data *wdata)
338 {
339 	mutex_unlock(&wdata->state.sync);
340 }
341 
342 static inline int wiimote_cmd_wait(struct wiimote_data *wdata)
343 {
344 	int ret;
345 
346 	/* The completion acts as implicit memory barrier so we can safely
347 	 * assume that state.cmd is set on success/failure and isn't accessed
348 	 * by any other thread, anymore. */
349 
350 	ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ);
351 	if (ret < 0)
352 		return -ERESTARTSYS;
353 	else if (ret == 0)
354 		return -EIO;
355 	else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
356 		return -EIO;
357 	else
358 		return 0;
359 }
360 
361 static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata)
362 {
363 	unsigned long ret;
364 
365 	/* no locking needed; see wiimote_cmd_wait() */
366 	ret = wait_for_completion_timeout(&wdata->state.ready, HZ);
367 	if (!ret)
368 		return -EIO;
369 	else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
370 		return -EIO;
371 	else
372 		return 0;
373 }
374 
375 #endif
376