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_TURNTABLE, 92 WIIMOTE_EXT_NUM, 93 }; 94 95 enum wiimote_mptype { 96 WIIMOTE_MP_NONE, 97 WIIMOTE_MP_UNKNOWN, 98 WIIMOTE_MP_SINGLE, 99 WIIMOTE_MP_PASSTHROUGH_NUNCHUK, 100 WIIMOTE_MP_PASSTHROUGH_CLASSIC, 101 }; 102 103 struct wiimote_buf { 104 __u8 data[HID_MAX_BUFFER_SIZE]; 105 size_t size; 106 }; 107 108 struct wiimote_queue { 109 spinlock_t lock; 110 struct work_struct worker; 111 __u8 head; 112 __u8 tail; 113 struct wiimote_buf outq[WIIMOTE_BUFSIZE]; 114 }; 115 116 struct wiimote_state { 117 spinlock_t lock; 118 __u32 flags; 119 __u8 accel_split[2]; 120 __u8 drm; 121 __u8 devtype; 122 __u8 exttype; 123 __u8 mp; 124 125 /* synchronous cmd requests */ 126 struct mutex sync; 127 struct completion ready; 128 int cmd; 129 __u32 opt; 130 131 /* results of synchronous requests */ 132 __u8 cmd_battery; 133 __u8 cmd_err; 134 __u8 *cmd_read_buf; 135 __u8 cmd_read_size; 136 137 /* calibration/cache data */ 138 __u16 calib_bboard[4][3]; 139 __s16 calib_pro_sticks[4]; 140 __u8 pressure_drums[7]; 141 __u8 cache_rumble; 142 }; 143 144 struct wiimote_data { 145 struct hid_device *hdev; 146 struct input_dev *input; 147 struct work_struct rumble_worker; 148 struct led_classdev *leds[4]; 149 struct input_dev *accel; 150 struct input_dev *ir; 151 struct power_supply *battery; 152 struct power_supply_desc battery_desc; 153 struct input_dev *mp; 154 struct timer_list timer; 155 struct wiimote_debug *debug; 156 157 union { 158 struct input_dev *input; 159 } extension; 160 161 struct wiimote_queue queue; 162 struct wiimote_state state; 163 struct work_struct init_worker; 164 }; 165 166 extern bool wiimote_dpad_as_analog; 167 168 /* wiimote modules */ 169 170 enum wiimod_module { 171 WIIMOD_KEYS, 172 WIIMOD_RUMBLE, 173 WIIMOD_BATTERY, 174 WIIMOD_LED1, 175 WIIMOD_LED2, 176 WIIMOD_LED3, 177 WIIMOD_LED4, 178 WIIMOD_ACCEL, 179 WIIMOD_IR, 180 WIIMOD_BUILTIN_MP, 181 WIIMOD_NO_MP, 182 WIIMOD_NUM, 183 WIIMOD_NULL = WIIMOD_NUM, 184 }; 185 186 #define WIIMOD_FLAG_INPUT 0x0001 187 #define WIIMOD_FLAG_EXT8 0x0002 188 #define WIIMOD_FLAG_EXT16 0x0004 189 190 struct wiimod_ops { 191 __u16 flags; 192 unsigned long arg; 193 int (*probe) (const struct wiimod_ops *ops, 194 struct wiimote_data *wdata); 195 void (*remove) (const struct wiimod_ops *ops, 196 struct wiimote_data *wdata); 197 198 void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys); 199 void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel); 200 void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed, 201 unsigned int id); 202 void (*in_mp) (struct wiimote_data *wdata, const __u8 *mp); 203 void (*in_ext) (struct wiimote_data *wdata, const __u8 *ext); 204 }; 205 206 extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM]; 207 extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM]; 208 extern const struct wiimod_ops wiimod_mp; 209 210 /* wiimote requests */ 211 212 enum wiiproto_reqs { 213 WIIPROTO_REQ_NULL = 0x0, 214 WIIPROTO_REQ_RUMBLE = 0x10, 215 WIIPROTO_REQ_LED = 0x11, 216 WIIPROTO_REQ_DRM = 0x12, 217 WIIPROTO_REQ_IR1 = 0x13, 218 WIIPROTO_REQ_SREQ = 0x15, 219 WIIPROTO_REQ_WMEM = 0x16, 220 WIIPROTO_REQ_RMEM = 0x17, 221 WIIPROTO_REQ_IR2 = 0x1a, 222 WIIPROTO_REQ_STATUS = 0x20, 223 WIIPROTO_REQ_DATA = 0x21, 224 WIIPROTO_REQ_RETURN = 0x22, 225 226 /* DRM_K: BB*2 */ 227 WIIPROTO_REQ_DRM_K = 0x30, 228 229 /* DRM_KA: BB*2 AA*3 */ 230 WIIPROTO_REQ_DRM_KA = 0x31, 231 232 /* DRM_KE: BB*2 EE*8 */ 233 WIIPROTO_REQ_DRM_KE = 0x32, 234 235 /* DRM_KAI: BB*2 AA*3 II*12 */ 236 WIIPROTO_REQ_DRM_KAI = 0x33, 237 238 /* DRM_KEE: BB*2 EE*19 */ 239 WIIPROTO_REQ_DRM_KEE = 0x34, 240 241 /* DRM_KAE: BB*2 AA*3 EE*16 */ 242 WIIPROTO_REQ_DRM_KAE = 0x35, 243 244 /* DRM_KIE: BB*2 II*10 EE*9 */ 245 WIIPROTO_REQ_DRM_KIE = 0x36, 246 247 /* DRM_KAIE: BB*2 AA*3 II*10 EE*6 */ 248 WIIPROTO_REQ_DRM_KAIE = 0x37, 249 250 /* DRM_E: EE*21 */ 251 WIIPROTO_REQ_DRM_E = 0x3d, 252 253 /* DRM_SKAI1: BB*2 AA*1 II*18 */ 254 WIIPROTO_REQ_DRM_SKAI1 = 0x3e, 255 256 /* DRM_SKAI2: BB*2 AA*1 II*18 */ 257 WIIPROTO_REQ_DRM_SKAI2 = 0x3f, 258 259 WIIPROTO_REQ_MAX 260 }; 261 262 #define dev_to_wii(pdev) hid_get_drvdata(to_hid_device(pdev)) 263 264 void __wiimote_schedule(struct wiimote_data *wdata); 265 266 extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm); 267 extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble); 268 extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds); 269 extern void wiiproto_req_status(struct wiimote_data *wdata); 270 extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel); 271 extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags); 272 extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags); 273 extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, 274 const __u8 *wmem, __u8 size); 275 extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, 276 __u8 *rmem, __u8 size); 277 278 #define wiiproto_req_rreg(wdata, os, sz) \ 279 wiiproto_req_rmem((wdata), false, (os), (sz)) 280 #define wiiproto_req_reeprom(wdata, os, sz) \ 281 wiiproto_req_rmem((wdata), true, (os), (sz)) 282 extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, 283 __u32 offset, __u16 size); 284 285 #ifdef CONFIG_DEBUG_FS 286 287 extern int wiidebug_init(struct wiimote_data *wdata); 288 extern void wiidebug_deinit(struct wiimote_data *wdata); 289 290 #else 291 292 static inline int wiidebug_init(void *u) { return 0; } 293 static inline void wiidebug_deinit(void *u) { } 294 295 #endif 296 297 /* requires the state.lock spinlock to be held */ 298 static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd, 299 __u32 opt) 300 { 301 return wdata->state.cmd == cmd && wdata->state.opt == opt; 302 } 303 304 /* requires the state.lock spinlock to be held */ 305 static inline void wiimote_cmd_complete(struct wiimote_data *wdata) 306 { 307 wdata->state.cmd = WIIPROTO_REQ_NULL; 308 complete(&wdata->state.ready); 309 } 310 311 /* requires the state.lock spinlock to be held */ 312 static inline void wiimote_cmd_abort(struct wiimote_data *wdata) 313 { 314 /* Abort synchronous request by waking up the sleeping caller. But 315 * reset the state.cmd field to an invalid value so no further event 316 * handlers will work with it. */ 317 wdata->state.cmd = WIIPROTO_REQ_MAX; 318 complete(&wdata->state.ready); 319 } 320 321 static inline int wiimote_cmd_acquire(struct wiimote_data *wdata) 322 { 323 return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0; 324 } 325 326 static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata) 327 { 328 mutex_lock(&wdata->state.sync); 329 } 330 331 /* requires the state.lock spinlock to be held */ 332 static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd, 333 __u32 opt) 334 { 335 reinit_completion(&wdata->state.ready); 336 wdata->state.cmd = cmd; 337 wdata->state.opt = opt; 338 } 339 340 static inline void wiimote_cmd_release(struct wiimote_data *wdata) 341 { 342 mutex_unlock(&wdata->state.sync); 343 } 344 345 static inline int wiimote_cmd_wait(struct wiimote_data *wdata) 346 { 347 int ret; 348 349 /* The completion acts as implicit memory barrier so we can safely 350 * assume that state.cmd is set on success/failure and isn't accessed 351 * by any other thread, anymore. */ 352 353 ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ); 354 if (ret < 0) 355 return -ERESTARTSYS; 356 else if (ret == 0) 357 return -EIO; 358 else if (wdata->state.cmd != WIIPROTO_REQ_NULL) 359 return -EIO; 360 else 361 return 0; 362 } 363 364 static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata) 365 { 366 unsigned long ret; 367 368 /* no locking needed; see wiimote_cmd_wait() */ 369 ret = wait_for_completion_timeout(&wdata->state.ready, HZ); 370 if (!ret) 371 return -EIO; 372 else if (wdata->state.cmd != WIIPROTO_REQ_NULL) 373 return -EIO; 374 else 375 return 0; 376 } 377 378 #endif 379