1 #ifndef __HID_WIIMOTE_H 2 #define __HID_WIIMOTE_H 3 4 /* 5 * HID driver for Nintendo Wii / Wii U peripherals 6 * Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com> 7 */ 8 9 /* 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the Free 12 * Software Foundation; either version 2 of the License, or (at your option) 13 * any later version. 14 */ 15 16 #include <linux/completion.h> 17 #include <linux/device.h> 18 #include <linux/hid.h> 19 #include <linux/input.h> 20 #include <linux/leds.h> 21 #include <linux/module.h> 22 #include <linux/mutex.h> 23 #include <linux/power_supply.h> 24 #include <linux/spinlock.h> 25 #include <linux/timer.h> 26 27 #define WIIMOTE_NAME "Nintendo Wii Remote" 28 #define WIIMOTE_BUFSIZE 32 29 30 #define WIIPROTO_FLAG_LED1 0x01 31 #define WIIPROTO_FLAG_LED2 0x02 32 #define WIIPROTO_FLAG_LED3 0x04 33 #define WIIPROTO_FLAG_LED4 0x08 34 #define WIIPROTO_FLAG_RUMBLE 0x10 35 #define WIIPROTO_FLAG_ACCEL 0x20 36 #define WIIPROTO_FLAG_IR_BASIC 0x40 37 #define WIIPROTO_FLAG_IR_EXT 0x80 38 #define WIIPROTO_FLAG_IR_FULL 0xc0 /* IR_BASIC | IR_EXT */ 39 #define WIIPROTO_FLAG_EXT_PLUGGED 0x0100 40 #define WIIPROTO_FLAG_EXT_USED 0x0200 41 #define WIIPROTO_FLAG_EXT_ACTIVE 0x0400 42 #define WIIPROTO_FLAG_MP_PLUGGED 0x0800 43 #define WIIPROTO_FLAG_MP_USED 0x1000 44 #define WIIPROTO_FLAG_MP_ACTIVE 0x2000 45 #define WIIPROTO_FLAG_EXITING 0x4000 46 #define WIIPROTO_FLAG_DRM_LOCKED 0x8000 47 #define WIIPROTO_FLAG_BUILTIN_MP 0x010000 48 #define WIIPROTO_FLAG_NO_MP 0x020000 49 #define WIIPROTO_FLAG_PRO_CALIB_DONE 0x040000 50 51 #define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \ 52 WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4) 53 #define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \ 54 WIIPROTO_FLAG_IR_FULL) 55 56 /* return flag for led \num */ 57 #define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1)) 58 59 enum wiiproto_keys { 60 WIIPROTO_KEY_LEFT, 61 WIIPROTO_KEY_RIGHT, 62 WIIPROTO_KEY_UP, 63 WIIPROTO_KEY_DOWN, 64 WIIPROTO_KEY_PLUS, 65 WIIPROTO_KEY_MINUS, 66 WIIPROTO_KEY_ONE, 67 WIIPROTO_KEY_TWO, 68 WIIPROTO_KEY_A, 69 WIIPROTO_KEY_B, 70 WIIPROTO_KEY_HOME, 71 WIIPROTO_KEY_COUNT 72 }; 73 74 enum wiimote_devtype { 75 WIIMOTE_DEV_PENDING, 76 WIIMOTE_DEV_UNKNOWN, 77 WIIMOTE_DEV_GENERIC, 78 WIIMOTE_DEV_GEN10, 79 WIIMOTE_DEV_GEN20, 80 WIIMOTE_DEV_BALANCE_BOARD, 81 WIIMOTE_DEV_PRO_CONTROLLER, 82 WIIMOTE_DEV_NUM, 83 }; 84 85 enum wiimote_exttype { 86 WIIMOTE_EXT_NONE, 87 WIIMOTE_EXT_UNKNOWN, 88 WIIMOTE_EXT_NUNCHUK, 89 WIIMOTE_EXT_CLASSIC_CONTROLLER, 90 WIIMOTE_EXT_BALANCE_BOARD, 91 WIIMOTE_EXT_PRO_CONTROLLER, 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 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(container_of(pdev, struct hid_device, \ 260 dev)) 261 262 void __wiimote_schedule(struct wiimote_data *wdata); 263 264 extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm); 265 extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble); 266 extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds); 267 extern void wiiproto_req_status(struct wiimote_data *wdata); 268 extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel); 269 extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags); 270 extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags); 271 extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset, 272 const __u8 *wmem, __u8 size); 273 extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, 274 __u8 *rmem, __u8 size); 275 276 #define wiiproto_req_rreg(wdata, os, sz) \ 277 wiiproto_req_rmem((wdata), false, (os), (sz)) 278 #define wiiproto_req_reeprom(wdata, os, sz) \ 279 wiiproto_req_rmem((wdata), true, (os), (sz)) 280 extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, 281 __u32 offset, __u16 size); 282 283 #ifdef CONFIG_DEBUG_FS 284 285 extern int wiidebug_init(struct wiimote_data *wdata); 286 extern void wiidebug_deinit(struct wiimote_data *wdata); 287 288 #else 289 290 static inline int wiidebug_init(void *u) { return 0; } 291 static inline void wiidebug_deinit(void *u) { } 292 293 #endif 294 295 /* requires the state.lock spinlock to be held */ 296 static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd, 297 __u32 opt) 298 { 299 return wdata->state.cmd == cmd && wdata->state.opt == opt; 300 } 301 302 /* requires the state.lock spinlock to be held */ 303 static inline void wiimote_cmd_complete(struct wiimote_data *wdata) 304 { 305 wdata->state.cmd = WIIPROTO_REQ_NULL; 306 complete(&wdata->state.ready); 307 } 308 309 /* requires the state.lock spinlock to be held */ 310 static inline void wiimote_cmd_abort(struct wiimote_data *wdata) 311 { 312 /* Abort synchronous request by waking up the sleeping caller. But 313 * reset the state.cmd field to an invalid value so no further event 314 * handlers will work with it. */ 315 wdata->state.cmd = WIIPROTO_REQ_MAX; 316 complete(&wdata->state.ready); 317 } 318 319 static inline int wiimote_cmd_acquire(struct wiimote_data *wdata) 320 { 321 return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0; 322 } 323 324 static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata) 325 { 326 mutex_lock(&wdata->state.sync); 327 } 328 329 /* requires the state.lock spinlock to be held */ 330 static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd, 331 __u32 opt) 332 { 333 reinit_completion(&wdata->state.ready); 334 wdata->state.cmd = cmd; 335 wdata->state.opt = opt; 336 } 337 338 static inline void wiimote_cmd_release(struct wiimote_data *wdata) 339 { 340 mutex_unlock(&wdata->state.sync); 341 } 342 343 static inline int wiimote_cmd_wait(struct wiimote_data *wdata) 344 { 345 int ret; 346 347 /* The completion acts as implicit memory barrier so we can safely 348 * assume that state.cmd is set on success/failure and isn't accessed 349 * by any other thread, anymore. */ 350 351 ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ); 352 if (ret < 0) 353 return -ERESTARTSYS; 354 else if (ret == 0) 355 return -EIO; 356 else if (wdata->state.cmd != WIIPROTO_REQ_NULL) 357 return -EIO; 358 else 359 return 0; 360 } 361 362 static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata) 363 { 364 unsigned long ret; 365 366 /* no locking needed; see wiimote_cmd_wait() */ 367 ret = wait_for_completion_timeout(&wdata->state.ready, HZ); 368 if (!ret) 369 return -EIO; 370 else if (wdata->state.cmd != WIIPROTO_REQ_NULL) 371 return -EIO; 372 else 373 return 0; 374 } 375 376 #endif 377