LXR linux/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
  59enum 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
  74enum 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
  85enum 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
  95enum 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
 103struct wiimote_buf {
 104        __u8 data[HID_MAX_BUFFER_SIZE];
 105        size_t size;
 106};
 107
 108struct 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
 116struct 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
 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
 376