linux/drivers/hid/hid-wiimote.h
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   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
  50#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
  51                                        WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
  52#define WIIPROTO_FLAGS_IR (WIIPROTO_FLAG_IR_BASIC | WIIPROTO_FLAG_IR_EXT | \
  53                                                        WIIPROTO_FLAG_IR_FULL)
  54
  55/* return flag for led \num */
  56#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
  57
  58enum wiiproto_keys {
  59        WIIPROTO_KEY_LEFT,
  60        WIIPROTO_KEY_RIGHT,
  61        WIIPROTO_KEY_UP,
  62        WIIPROTO_KEY_DOWN,
  63        WIIPROTO_KEY_PLUS,
  64        WIIPROTO_KEY_MINUS,
  65        WIIPROTO_KEY_ONE,
  66        WIIPROTO_KEY_TWO,
  67        WIIPROTO_KEY_A,
  68        WIIPROTO_KEY_B,
  69        WIIPROTO_KEY_HOME,
  70        WIIPROTO_KEY_COUNT
  71};
  72
  73enum wiimote_devtype {
  74        WIIMOTE_DEV_PENDING,
  75        WIIMOTE_DEV_UNKNOWN,
  76        WIIMOTE_DEV_GENERIC,
  77        WIIMOTE_DEV_GEN10,
  78        WIIMOTE_DEV_GEN20,
  79        WIIMOTE_DEV_BALANCE_BOARD,
  80        WIIMOTE_DEV_PRO_CONTROLLER,
  81        WIIMOTE_DEV_NUM,
  82};
  83
  84enum wiimote_exttype {
  85        WIIMOTE_EXT_NONE,
  86        WIIMOTE_EXT_UNKNOWN,
  87        WIIMOTE_EXT_NUNCHUK,
  88        WIIMOTE_EXT_CLASSIC_CONTROLLER,
  89        WIIMOTE_EXT_BALANCE_BOARD,
  90        WIIMOTE_EXT_PRO_CONTROLLER,
  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 data */
 137        __u16 calib_bboard[4][3];
 138};
 139
 140struct wiimote_data {
 141        struct hid_device *hdev;
 142        struct input_dev *input;
 143        struct led_classdev *leds[4];
 144        struct input_dev *accel;
 145        struct input_dev *ir;
 146        struct power_supply battery;
 147        struct input_dev *mp;
 148        struct timer_list timer;
 149        struct wiimote_debug *debug;
 150
 151        union {
 152                struct input_dev *input;
 153        } extension;
 154
 155        struct wiimote_queue queue;
 156        struct wiimote_state state;
 157        struct work_struct init_worker;
 158};
 159
 160/* wiimote modules */
 161
 162enum wiimod_module {
 163        WIIMOD_KEYS,
 164        WIIMOD_RUMBLE,
 165        WIIMOD_BATTERY,
 166        WIIMOD_LED1,
 167        WIIMOD_LED2,
 168        WIIMOD_LED3,
 169        WIIMOD_LED4,
 170        WIIMOD_ACCEL,
 171        WIIMOD_IR,
 172        WIIMOD_BUILTIN_MP,
 173        WIIMOD_NO_MP,
 174        WIIMOD_NUM,
 175        WIIMOD_NULL = WIIMOD_NUM,
 176};
 177
 178#define WIIMOD_FLAG_INPUT               0x0001
 179#define WIIMOD_FLAG_EXT8                0x0002
 180#define WIIMOD_FLAG_EXT16               0x0004
 181
 182struct wiimod_ops {
 183        __u16 flags;
 184        unsigned long arg;
 185        int (*probe) (const struct wiimod_ops *ops,
 186                      struct wiimote_data *wdata);
 187        void (*remove) (const struct wiimod_ops *ops,
 188                        struct wiimote_data *wdata);
 189
 190        void (*in_keys) (struct wiimote_data *wdata, const __u8 *keys);
 191        void (*in_accel) (struct wiimote_data *wdata, const __u8 *accel);
 192        void (*in_ir) (struct wiimote_data *wdata, const __u8 *ir, bool packed,
 193                       unsigned int id);
 194        void (*in_mp) (struct wiimote_data *wdata, const __u8 *mp);
 195        void (*in_ext) (struct wiimote_data *wdata, const __u8 *ext);
 196};
 197
 198extern const struct wiimod_ops *wiimod_table[WIIMOD_NUM];
 199extern const struct wiimod_ops *wiimod_ext_table[WIIMOTE_EXT_NUM];
 200extern const struct wiimod_ops wiimod_mp;
 201
 202/* wiimote requests */
 203
 204enum wiiproto_reqs {
 205        WIIPROTO_REQ_NULL = 0x0,
 206        WIIPROTO_REQ_RUMBLE = 0x10,
 207        WIIPROTO_REQ_LED = 0x11,
 208        WIIPROTO_REQ_DRM = 0x12,
 209        WIIPROTO_REQ_IR1 = 0x13,
 210        WIIPROTO_REQ_SREQ = 0x15,
 211        WIIPROTO_REQ_WMEM = 0x16,
 212        WIIPROTO_REQ_RMEM = 0x17,
 213        WIIPROTO_REQ_IR2 = 0x1a,
 214        WIIPROTO_REQ_STATUS = 0x20,
 215        WIIPROTO_REQ_DATA = 0x21,
 216        WIIPROTO_REQ_RETURN = 0x22,
 217
 218        /* DRM_K: BB*2 */
 219        WIIPROTO_REQ_DRM_K = 0x30,
 220
 221        /* DRM_KA: BB*2 AA*3 */
 222        WIIPROTO_REQ_DRM_KA = 0x31,
 223
 224        /* DRM_KE: BB*2 EE*8 */
 225        WIIPROTO_REQ_DRM_KE = 0x32,
 226
 227        /* DRM_KAI: BB*2 AA*3 II*12 */
 228        WIIPROTO_REQ_DRM_KAI = 0x33,
 229
 230        /* DRM_KEE: BB*2 EE*19 */
 231        WIIPROTO_REQ_DRM_KEE = 0x34,
 232
 233        /* DRM_KAE: BB*2 AA*3 EE*16 */
 234        WIIPROTO_REQ_DRM_KAE = 0x35,
 235
 236        /* DRM_KIE: BB*2 II*10 EE*9 */
 237        WIIPROTO_REQ_DRM_KIE = 0x36,
 238
 239        /* DRM_KAIE: BB*2 AA*3 II*10 EE*6 */
 240        WIIPROTO_REQ_DRM_KAIE = 0x37,
 241
 242        /* DRM_E: EE*21 */
 243        WIIPROTO_REQ_DRM_E = 0x3d,
 244
 245        /* DRM_SKAI1: BB*2 AA*1 II*18 */
 246        WIIPROTO_REQ_DRM_SKAI1 = 0x3e,
 247
 248        /* DRM_SKAI2: BB*2 AA*1 II*18 */
 249        WIIPROTO_REQ_DRM_SKAI2 = 0x3f,
 250
 251        WIIPROTO_REQ_MAX
 252};
 253
 254#define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \
 255                                                                        dev))
 256
 257void __wiimote_schedule(struct wiimote_data *wdata);
 258
 259extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
 260extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
 261extern void wiiproto_req_leds(struct wiimote_data *wdata, int leds);
 262extern void wiiproto_req_status(struct wiimote_data *wdata);
 263extern void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel);
 264extern void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags);
 265extern void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags);
 266extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
 267                                                const __u8 *wmem, __u8 size);
 268extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,
 269                                                        __u8 *rmem, __u8 size);
 270
 271#define wiiproto_req_rreg(wdata, os, sz) \
 272                                wiiproto_req_rmem((wdata), false, (os), (sz))
 273#define wiiproto_req_reeprom(wdata, os, sz) \
 274                                wiiproto_req_rmem((wdata), true, (os), (sz))
 275extern void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom,
 276                                                __u32 offset, __u16 size);
 277
 278#ifdef CONFIG_DEBUG_FS
 279
 280extern int wiidebug_init(struct wiimote_data *wdata);
 281extern void wiidebug_deinit(struct wiimote_data *wdata);
 282
 283#else
 284
 285static inline int wiidebug_init(void *u) { return 0; }
 286static inline void wiidebug_deinit(void *u) { }
 287
 288#endif
 289
 290/* requires the state.lock spinlock to be held */
 291static inline bool wiimote_cmd_pending(struct wiimote_data *wdata, int cmd,
 292                                                                __u32 opt)
 293{
 294        return wdata->state.cmd == cmd && wdata->state.opt == opt;
 295}
 296
 297/* requires the state.lock spinlock to be held */
 298static inline void wiimote_cmd_complete(struct wiimote_data *wdata)
 299{
 300        wdata->state.cmd = WIIPROTO_REQ_NULL;
 301        complete(&wdata->state.ready);
 302}
 303
 304/* requires the state.lock spinlock to be held */
 305static inline void wiimote_cmd_abort(struct wiimote_data *wdata)
 306{
 307        /* Abort synchronous request by waking up the sleeping caller. But
 308         * reset the state.cmd field to an invalid value so no further event
 309         * handlers will work with it. */
 310        wdata->state.cmd = WIIPROTO_REQ_MAX;
 311        complete(&wdata->state.ready);
 312}
 313
 314static inline int wiimote_cmd_acquire(struct wiimote_data *wdata)
 315{
 316        return mutex_lock_interruptible(&wdata->state.sync) ? -ERESTARTSYS : 0;
 317}
 318
 319static inline void wiimote_cmd_acquire_noint(struct wiimote_data *wdata)
 320{
 321        mutex_lock(&wdata->state.sync);
 322}
 323
 324/* requires the state.lock spinlock to be held */
 325static inline void wiimote_cmd_set(struct wiimote_data *wdata, int cmd,
 326                                                                __u32 opt)
 327{
 328        INIT_COMPLETION(wdata->state.ready);
 329        wdata->state.cmd = cmd;
 330        wdata->state.opt = opt;
 331}
 332
 333static inline void wiimote_cmd_release(struct wiimote_data *wdata)
 334{
 335        mutex_unlock(&wdata->state.sync);
 336}
 337
 338static inline int wiimote_cmd_wait(struct wiimote_data *wdata)
 339{
 340        int ret;
 341
 342        /* The completion acts as implicit memory barrier so we can safely
 343         * assume that state.cmd is set on success/failure and isn't accessed
 344         * by any other thread, anymore. */
 345
 346        ret = wait_for_completion_interruptible_timeout(&wdata->state.ready, HZ);
 347        if (ret < 0)
 348                return -ERESTARTSYS;
 349        else if (ret == 0)
 350                return -EIO;
 351        else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
 352                return -EIO;
 353        else
 354                return 0;
 355}
 356
 357static inline int wiimote_cmd_wait_noint(struct wiimote_data *wdata)
 358{
 359        unsigned long ret;
 360
 361        /* no locking needed; see wiimote_cmd_wait() */
 362        ret = wait_for_completion_timeout(&wdata->state.ready, HZ);
 363        if (!ret)
 364                return -EIO;
 365        else if (wdata->state.cmd != WIIPROTO_REQ_NULL)
 366                return -EIO;
 367        else
 368                return 0;
 369}
 370
 371#endif
 372
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