include/sound/soc.h

   1 /*
   2  * linux/sound/soc.h -- ALSA SoC Layer
   3  *
   4  * Author:              Liam Girdwood
   5  * Created:             Aug 11th 2005
   6  * Copyright:   Wolfson Microelectronics. PLC.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #ifndef __LINUX_SND_SOC_H
  14 #define __LINUX_SND_SOC_H
  15
  16 #include <linux/platform_device.h>
  17 #include <linux/types.h>
  18 #include <linux/workqueue.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/control.h>
  22 #include <sound/ac97_codec.h>
  23
  24 #define SND_SOC_VERSION "0.13.2"
  25
  26 /*
  27  * Convenience kcontrol builders
  28  */
  29 #define SOC_SINGLE_VALUE(reg, shift, max, invert) ((reg) | ((shift) << 8) |\
  30         ((shift) << 12) | ((max) << 16) | ((invert) << 24))
  31 #define SOC_SINGLE_VALUE_EXT(reg, max, invert) ((reg) | ((max) << 16) |\
  32         ((invert) << 31))
  33 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  34 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  35         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  36         .put = snd_soc_put_volsw, \
  37         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  38 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  39 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  40         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  41                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  42         .tlv.p = (tlv_array), \
  43         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  44         .put = snd_soc_put_volsw, \
  45         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  46 #define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
  47 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  48         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  49         .put = snd_soc_put_volsw, \
  50         .private_value = (reg) | ((shift_left) << 8) | \
  51                 ((shift_right) << 12) | ((max) << 16) | ((invert) << 24) }
  52 #define SOC_DOUBLE_R(xname, reg_left, reg_right, shift, max, invert) \
  53 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  54         .info = snd_soc_info_volsw_2r, \
  55         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  56         .private_value = (reg_left) | ((shift) << 8)  | \
  57                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
  58 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
  59 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  60         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  61                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  62         .tlv.p = (tlv_array), \
  63         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  64         .put = snd_soc_put_volsw, \
  65         .private_value = (reg) | ((shift_left) << 8) | \
  66                 ((shift_right) << 12) | ((max) << 16) | ((invert) << 24) }
  67 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, shift, max, invert, tlv_array) \
  68 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  69         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  70                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  71         .tlv.p = (tlv_array), \
  72         .info = snd_soc_info_volsw_2r, \
  73         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  74         .private_value = (reg_left) | ((shift) << 8)  | \
  75                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
  76 #define SOC_DOUBLE_S8_TLV(xname, reg, min, max, tlv_array) \
  77 {       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  78         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  79                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  80         .tlv.p  = (tlv_array), \
  81         .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
  82         .put    = snd_soc_put_volsw_s8, \
  83         .private_value = (reg) | (((signed char)max) << 16) | \
  84                          (((signed char)min) << 24) }
  85 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
  86 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  87         .mask = xmask, .texts = xtexts }
  88 #define SOC_ENUM_SINGLE(xreg, xshift, xmask, xtexts) \
  89         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xtexts)
  90 #define SOC_ENUM_SINGLE_EXT(xmask, xtexts) \
  91 {       .mask = xmask, .texts = xtexts }
  92 #define SOC_ENUM(xname, xenum) \
  93 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
  94         .info = snd_soc_info_enum_double, \
  95         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
  96         .private_value = (unsigned long)&xenum }
  97 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmask, xinvert,\
  98          xhandler_get, xhandler_put) \
  99 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 100         .info = snd_soc_info_volsw, \
 101         .get = xhandler_get, .put = xhandler_put, \
 102         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmask, xinvert) }
 103 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 104 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 105         .info = snd_soc_info_bool_ext, \
 106         .get = xhandler_get, .put = xhandler_put, \
 107         .private_value = xdata }
 108 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 109 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 110         .info = snd_soc_info_enum_ext, \
 111         .get = xhandler_get, .put = xhandler_put, \
 112         .private_value = (unsigned long)&xenum }
 113
 114 /*
 115  * Bias levels
 116  *
 117  * @ON:      Bias is fully on for audio playback and capture operations.
 118  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 119  *           stream start and stop operations.
 120  * @STANDBY: Low power standby state when no playback/capture operations are
 121  *           in progress. NOTE: The transition time between STANDBY and ON
 122  *           should be as fast as possible and no longer than 10ms.
 123  * @OFF:     Power Off. No restrictions on transition times.
 124  */
 125 enum snd_soc_bias_level {
 126         SND_SOC_BIAS_ON,
 127         SND_SOC_BIAS_PREPARE,
 128         SND_SOC_BIAS_STANDBY,
 129         SND_SOC_BIAS_OFF,
 130 };
 131
 132 /*
 133  * Digital Audio Interface (DAI) types
 134  */
 135 #define SND_SOC_DAI_AC97        0x1
 136 #define SND_SOC_DAI_I2S         0x2
 137 #define SND_SOC_DAI_PCM         0x4
 138 #define SND_SOC_DAI_AC97_BUS    0x8     /* for custom i.e. non ac97_codec.c */
 139
 140 /*
 141  * DAI hardware audio formats
 142  */
 143 #define SND_SOC_DAIFMT_I2S              0       /* I2S mode */
 144 #define SND_SOC_DAIFMT_RIGHT_J  1       /* Right justified mode */
 145 #define SND_SOC_DAIFMT_LEFT_J   2       /* Left Justified mode */
 146 #define SND_SOC_DAIFMT_DSP_A    3       /* L data msb after FRM or LRC */
 147 #define SND_SOC_DAIFMT_DSP_B    4       /* L data msb during FRM or LRC */
 148 #define SND_SOC_DAIFMT_AC97             5       /* AC97 */
 149
 150 #define SND_SOC_DAIFMT_MSB      SND_SOC_DAIFMT_LEFT_J
 151 #define SND_SOC_DAIFMT_LSB      SND_SOC_DAIFMT_RIGHT_J
 152
 153 /*
 154  * DAI Gating
 155  */
 156 #define SND_SOC_DAIFMT_CONT                     (0 << 4)        /* continuous clock */
 157 #define SND_SOC_DAIFMT_GATED            (1 << 4)        /* clock is gated when not Tx/Rx */
 158
 159 /*
 160  * DAI Sync
 161  * Synchronous LR (Left Right) clocks and Frame signals.
 162  */
 163 #define SND_SOC_DAIFMT_SYNC             (0 << 5)        /* Tx FRM = Rx FRM */
 164 #define SND_SOC_DAIFMT_ASYNC            (1 << 5)        /* Tx FRM ~ Rx FRM */
 165
 166 /*
 167  * TDM
 168  */
 169 #define SND_SOC_DAIFMT_TDM              (1 << 6)
 170
 171 /*
 172  * DAI hardware signal inversions
 173  */
 174 #define SND_SOC_DAIFMT_NB_NF            (0 << 8)        /* normal bclk + frm */
 175 #define SND_SOC_DAIFMT_NB_IF            (1 << 8)        /* normal bclk + inv frm */
 176 #define SND_SOC_DAIFMT_IB_NF            (2 << 8)        /* invert bclk + nor frm */
 177 #define SND_SOC_DAIFMT_IB_IF            (3 << 8)        /* invert bclk + frm */
 178
 179 /*
 180  * DAI hardware clock masters
 181  * This is wrt the codec, the inverse is true for the interface
 182  * i.e. if the codec is clk and frm master then the interface is
 183  * clk and frame slave.
 184  */
 185 #define SND_SOC_DAIFMT_CBM_CFM  (0 << 12) /* codec clk & frm master */
 186 #define SND_SOC_DAIFMT_CBS_CFM  (1 << 12) /* codec clk slave & frm master */
 187 #define SND_SOC_DAIFMT_CBM_CFS  (2 << 12) /* codec clk master & frame slave */
 188 #define SND_SOC_DAIFMT_CBS_CFS  (3 << 12) /* codec clk & frm slave */
 189
 190 #define SND_SOC_DAIFMT_FORMAT_MASK              0x000f
 191 #define SND_SOC_DAIFMT_CLOCK_MASK               0x00f0
 192 #define SND_SOC_DAIFMT_INV_MASK                 0x0f00
 193 #define SND_SOC_DAIFMT_MASTER_MASK              0xf000
 194
 195
 196 /*
 197  * Master Clock Directions
 198  */
 199 #define SND_SOC_CLOCK_IN        0
 200 #define SND_SOC_CLOCK_OUT       1
 201
 202 /*
 203  * AC97 codec ID's bitmask
 204  */
 205 #define SND_SOC_DAI_AC97_ID0    (1 << 0)
 206 #define SND_SOC_DAI_AC97_ID1    (1 << 1)
 207 #define SND_SOC_DAI_AC97_ID2    (1 << 2)
 208 #define SND_SOC_DAI_AC97_ID3    (1 << 3)
 209
 210 struct snd_soc_device;
 211 struct snd_soc_pcm_stream;
 212 struct snd_soc_ops;
 213 struct snd_soc_dai_mode;
 214 struct snd_soc_pcm_runtime;
 215 struct snd_soc_codec_dai;
 216 struct snd_soc_cpu_dai;
 217 struct snd_soc_codec;
 218 struct snd_soc_machine_config;
 219 struct soc_enum;
 220 struct snd_soc_ac97_ops;
 221 struct snd_soc_clock_info;
 222
 223 typedef int (*hw_write_t)(void *,const char* ,int);
 224 typedef int (*hw_read_t)(void *,char* ,int);
 225
 226 extern struct snd_ac97_bus_ops soc_ac97_ops;
 227
 228 /* pcm <-> DAI connect */
 229 void snd_soc_free_pcms(struct snd_soc_device *socdev);
 230 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 231 int snd_soc_register_card(struct snd_soc_device *socdev);
 232
 233 /* set runtime hw params */
 234 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 235         const struct snd_pcm_hardware *hw);
 236
 237 /* codec IO */
 238 #define snd_soc_read(codec, reg) codec->read(codec, reg)
 239 #define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
 240
 241 /* codec register bit access */
 242 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 243                                 unsigned short mask, unsigned short value);
 244 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 245                                 unsigned short mask, unsigned short value);
 246
 247 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 248         struct snd_ac97_bus_ops *ops, int num);
 249 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 250
 251 /*
 252  *Controls
 253  */
 254 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 255         void *data, char *long_name);
 256 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 257         struct snd_ctl_elem_info *uinfo);
 258 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 259         struct snd_ctl_elem_info *uinfo);
 260 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 261         struct snd_ctl_elem_value *ucontrol);
 262 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 263         struct snd_ctl_elem_value *ucontrol);
 264 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 265         struct snd_ctl_elem_info *uinfo);
 266 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 267         struct snd_ctl_elem_info *uinfo);
 268 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 269 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 270         struct snd_ctl_elem_value *ucontrol);
 271 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 272         struct snd_ctl_elem_value *ucontrol);
 273 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 274         struct snd_ctl_elem_info *uinfo);
 275 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 276         struct snd_ctl_elem_value *ucontrol);
 277 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 278         struct snd_ctl_elem_value *ucontrol);
 279 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 280         struct snd_ctl_elem_info *uinfo);
 281 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 282         struct snd_ctl_elem_value *ucontrol);
 283 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 284         struct snd_ctl_elem_value *ucontrol);
 285
 286 /* SoC PCM stream information */
 287 struct snd_soc_pcm_stream {
 288         char *stream_name;
 289         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 290         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 291         unsigned int rate_min;          /* min rate */
 292         unsigned int rate_max;          /* max rate */
 293         unsigned int channels_min;      /* min channels */
 294         unsigned int channels_max;      /* max channels */
 295         unsigned int active:1;          /* stream is in use */
 296 };
 297
 298 /* SoC audio ops */
 299 struct snd_soc_ops {
 300         int (*startup)(struct snd_pcm_substream *);
 301         void (*shutdown)(struct snd_pcm_substream *);
 302         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 303         int (*hw_free)(struct snd_pcm_substream *);
 304         int (*prepare)(struct snd_pcm_substream *);
 305         int (*trigger)(struct snd_pcm_substream *, int);
 306 };
 307
 308 /* ASoC DAI ops */
 309 struct snd_soc_dai_ops {
 310         /* DAI clocking configuration */
 311         int (*set_sysclk)(struct snd_soc_codec_dai *codec_dai,
 312                 int clk_id, unsigned int freq, int dir);
 313         int (*set_pll)(struct snd_soc_codec_dai *codec_dai,
 314                 int pll_id, unsigned int freq_in, unsigned int freq_out);
 315         int (*set_clkdiv)(struct snd_soc_codec_dai *codec_dai,
 316                 int div_id, int div);
 317
 318         /* DAI format configuration */
 319         int (*set_fmt)(struct snd_soc_codec_dai *codec_dai,
 320                 unsigned int fmt);
 321         int (*set_tdm_slot)(struct snd_soc_codec_dai *codec_dai,
 322                 unsigned int mask, int slots);
 323         int (*set_tristate)(struct snd_soc_codec_dai *, int tristate);
 324
 325         /* digital mute */
 326         int (*digital_mute)(struct snd_soc_codec_dai *, int mute);
 327 };
 328
 329 /* SoC Codec DAI */
 330 struct snd_soc_codec_dai {
 331         char *name;
 332         int id;
 333         unsigned char type;
 334
 335         /* DAI capabilities */
 336         struct snd_soc_pcm_stream playback;
 337         struct snd_soc_pcm_stream capture;
 338
 339         /* DAI runtime info */
 340         struct snd_soc_codec *codec;
 341         unsigned int active;
 342         unsigned char pop_wait:1;
 343
 344         /* ops */
 345         struct snd_soc_ops ops;
 346         struct snd_soc_dai_ops dai_ops;
 347
 348         /* DAI private data */
 349         void *private_data;
 350 };
 351
 352 /* SoC CPU DAI */
 353 struct snd_soc_cpu_dai {
 354
 355         /* DAI description */
 356         char *name;
 357         unsigned int id;
 358         unsigned char type;
 359
 360         /* DAI callbacks */
 361         int (*probe)(struct platform_device *pdev,
 362                      struct snd_soc_cpu_dai *dai);
 363         void (*remove)(struct platform_device *pdev,
 364                        struct snd_soc_cpu_dai *dai);
 365         int (*suspend)(struct platform_device *pdev,
 366                 struct snd_soc_cpu_dai *cpu_dai);
 367         int (*resume)(struct platform_device *pdev,
 368                 struct snd_soc_cpu_dai *cpu_dai);
 369
 370         /* ops */
 371         struct snd_soc_ops ops;
 372         struct snd_soc_dai_ops dai_ops;
 373
 374         /* DAI capabilities */
 375         struct snd_soc_pcm_stream capture;
 376         struct snd_soc_pcm_stream playback;
 377
 378         /* DAI runtime info */
 379         struct snd_pcm_runtime *runtime;
 380         unsigned char active:1;
 381         void *dma_data;
 382
 383         /* DAI private data */
 384         void *private_data;
 385 };
 386
 387 /* SoC Audio Codec */
 388 struct snd_soc_codec {
 389         char *name;
 390         struct module *owner;
 391         struct mutex mutex;
 392
 393         /* callbacks */
 394         int (*set_bias_level)(struct snd_soc_codec *,
 395                               enum snd_soc_bias_level level);
 396
 397         /* runtime */
 398         struct snd_card *card;
 399         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 400         unsigned int active;
 401         unsigned int pcm_devs;
 402         void *private_data;
 403
 404         /* codec IO */
 405         void *control_data; /* codec control (i2c/3wire) data */
 406         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 407         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 408         hw_write_t hw_write;
 409         hw_read_t hw_read;
 410         void *reg_cache;
 411         short reg_cache_size;
 412         short reg_cache_step;
 413
 414         /* dapm */
 415         struct list_head dapm_widgets;
 416         struct list_head dapm_paths;
 417         enum snd_soc_bias_level bias_level;
 418         enum snd_soc_bias_level suspend_bias_level;
 419         struct delayed_work delayed_work;
 420
 421         /* codec DAI's */
 422         struct snd_soc_codec_dai *dai;
 423         unsigned int num_dai;
 424 };
 425
 426 /* codec device */
 427 struct snd_soc_codec_device {
 428         int (*probe)(struct platform_device *pdev);
 429         int (*remove)(struct platform_device *pdev);
 430         int (*suspend)(struct platform_device *pdev, pm_message_t state);
 431         int (*resume)(struct platform_device *pdev);
 432 };
 433
 434 /* SoC platform interface */
 435 struct snd_soc_platform {
 436         char *name;
 437
 438         int (*probe)(struct platform_device *pdev);
 439         int (*remove)(struct platform_device *pdev);
 440         int (*suspend)(struct platform_device *pdev,
 441                 struct snd_soc_cpu_dai *cpu_dai);
 442         int (*resume)(struct platform_device *pdev,
 443                 struct snd_soc_cpu_dai *cpu_dai);
 444
 445         /* pcm creation and destruction */
 446         int (*pcm_new)(struct snd_card *, struct snd_soc_codec_dai *,
 447                 struct snd_pcm *);
 448         void (*pcm_free)(struct snd_pcm *);
 449
 450         /* platform stream ops */
 451         struct snd_pcm_ops *pcm_ops;
 452 };
 453
 454 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 455 struct snd_soc_dai_link  {
 456         char *name;                     /* Codec name */
 457         char *stream_name;              /* Stream name */
 458
 459         /* DAI */
 460         struct snd_soc_codec_dai *codec_dai;
 461         struct snd_soc_cpu_dai *cpu_dai;
 462
 463         /* machine stream operations */
 464         struct snd_soc_ops *ops;
 465
 466         /* codec/machine specific init - e.g. add machine controls */
 467         int (*init)(struct snd_soc_codec *codec);
 468
 469         /* DAI pcm */
 470         struct snd_pcm *pcm;
 471 };
 472
 473 /* SoC machine */
 474 struct snd_soc_machine {
 475         char *name;
 476
 477         int (*probe)(struct platform_device *pdev);
 478         int (*remove)(struct platform_device *pdev);
 479
 480         /* the pre and post PM functions are used to do any PM work before and
 481          * after the codec and DAI's do any PM work. */
 482         int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 483         int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 484         int (*resume_pre)(struct platform_device *pdev);
 485         int (*resume_post)(struct platform_device *pdev);
 486
 487         /* callbacks */
 488         int (*set_bias_level)(struct snd_soc_machine *,
 489                               enum snd_soc_bias_level level);
 490
 491         /* CPU <--> Codec DAI links  */
 492         struct snd_soc_dai_link *dai_link;
 493         int num_links;
 494 };
 495
 496 /* SoC Device - the audio subsystem */
 497 struct snd_soc_device {
 498         struct device *dev;
 499         struct snd_soc_machine *machine;
 500         struct snd_soc_platform *platform;
 501         struct snd_soc_codec *codec;
 502         struct snd_soc_codec_device *codec_dev;
 503         struct delayed_work delayed_work;
 504         void *codec_data;
 505 };
 506
 507 /* runtime channel data */
 508 struct snd_soc_pcm_runtime {
 509         struct snd_soc_dai_link *dai;
 510         struct snd_soc_device *socdev;
 511 };
 512
 513 /* enumerated kcontrol */
 514 struct soc_enum {
 515         unsigned short reg;
 516         unsigned short reg2;
 517         unsigned char shift_l;
 518         unsigned char shift_r;
 519         unsigned int mask;
 520         const char **texts;
 521         void *dapm;
 522 };
 523
 524 #endif