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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
56enum 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
71enum 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
82enum 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
94enum 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
102struct wiimote_buf {
103 __u8 data[HID_MAX_BUFFER_SIZE];
104 size_t size;
105};
106
107struct 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
115struct 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
143struct 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
167enum 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
187struct 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
203extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM];
204extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM];
205extern const struct wiimod_ops wiimod_mp;
206
207/* wiimote requests */
208
209enum 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
261void __wiimote_schedule(struct wiimote_data *wdata);
262
263extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
264extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
265extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds);
266extern void wiiproto_req_status(struct wiimote_data *wdata);
267extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel);
268extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags);
269extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags);
270extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
271 const __u8 *wmem, __u8 size);
272extern 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))
279extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
280 __u32 offset, __u16 size);
281
282#ifdef CONFIG_DEBUG_FS
283
284extern int wiidebug_init(struct wiimote_data *wdata);
285extern void wiidebug_deinit(struct wiimote_data *wdata);
286
287#else
288
289static inline int wiidebug_init(void *u) { return 0; }
290static inline void wiidebug_deinit(void *u) { }
291
292#endif
293
294/* requires the state.lock spinlock to be held */
295static 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 */
302static 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 */
309static 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
318static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
319{
320 return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
321}
322
323static 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 */
329static 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
337static inline void wiimote_cmd_release(struct wiimote_data *wdata)
338{
339 mutex_unlock(&wdata->state.sync);
340}
341
342static 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
361static 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