drivers/hid/hid-wiimote.h

   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_DRUMS,
  93         WIIMOTE_EXT_GUITAR,
  94         WIIMOTE_EXT_NUM,
  95 };
  96
  97 enum wiimote_mptype {
  98         WIIMOTE_MP_NONE,
  99         WIIMOTE_MP_UNKNOWN,
 100         WIIMOTE_MP_SINGLE,
 101         WIIMOTE_MP_PASSTHROUGH_NUNCHUK,
 102         WIIMOTE_MP_PASSTHROUGH_CLASSIC,
 103 };
 104
 105 struct wiimote_buf {
 106         __u8 data[HID_MAX_BUFFER_SIZE];
 107         size_t size;
 108 };
 109
 110 struct wiimote_queue {
 111         spinlock_t lock;
 112         struct work_struct worker;
 113         __u8 head;
 114         __u8 tail;
 115         struct wiimote_buf outq[WIIMOTE_BUFSIZE];
 116 };
 117
 118 struct wiimote_state {
 119         spinlock_t lock;
 120         __u32 flags;
 121         __u8 accel_split[2];
 122         __u8 drm;
 123         __u8 devtype;
 124         __u8 exttype;
 125         __u8 mp;
 126
 127         /* synchronous cmd requests */
 128         struct mutex sync;
 129         struct completion ready;
 130         int cmd;
 131         __u32 opt;
 132
 133         /* results of synchronous requests */
 134         __u8 cmd_battery;
 135         __u8 cmd_err;
 136         __u8 *cmd_read_buf;
 137         __u8 cmd_read_size;
 138
 139         /* calibration/cache data */
 140         __u16 calib_bboard[4][3];
 141         __s16 calib_pro_sticks[4];
 142         __u8 pressure_drums[7];
 143         __u8 cache_rumble;
 144 };
 145
 146 struct wiimote_data {
 147         struct hid_device *hdev;
 148         struct input_dev *input;
 149         struct work_struct rumble_worker;
 150         struct led_classdev *leds[4];
 151         struct input_dev *accel;
 152         struct input_dev *ir;
 153         struct power_supply *battery;
 154         struct power_supply_desc battery_desc;
 155         struct input_dev *mp;
 156         struct timer_list timer;
 157         struct wiimote_debug *debug;
 158
 159         union {
 160                 struct input_dev *input;
 161         } extension;
 162
 163         struct wiimote_queue queue;
 164         struct wiimote_state state;
 165         struct work_struct init_worker;
 166 };
 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