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(xreg, xshift, xmax, xinvert) \
  30         ((unsigned long)&(struct soc_mixer_control) \
  31         {.reg = xreg, .shift = xshift, .max = xmax, .invert = xinvert})
  32 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  33         ((unsigned long)&(struct soc_mixer_control) \
  34         {.reg = xreg, .max = xmax, .invert = xinvert})
  35 #define SOC_SINGLE(xname, reg, shift, max, invert) \
  36 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  37         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  38         .put = snd_soc_put_volsw, \
  39         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  40 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  41 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  42         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  43                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  44         .tlv.p = (tlv_array), \
  45         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  46         .put = snd_soc_put_volsw, \
  47         .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  48 #define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \
  49 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  50         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  51         .put = snd_soc_put_volsw, \
  52         .private_value = (unsigned long)&(struct soc_mixer_control) \
  53                 {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
  54                  .max = xmax, .invert = xinvert} }
  55 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
  56 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  57         .info = snd_soc_info_volsw_2r, \
  58         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  59         .private_value = (unsigned long)&(struct soc_mixer_control) \
  60                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  61                 .max = xmax, .invert = xinvert} }
  62 #define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \
  63 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  64         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  65                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  66         .tlv.p = (tlv_array), \
  67         .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  68         .put = snd_soc_put_volsw, \
  69         .private_value = (unsigned long)&(struct soc_mixer_control) \
  70                 {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
  71                  .max = xmax, .invert = xinvert} }
  72 #define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
  73 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  74         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  75                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  76         .tlv.p = (tlv_array), \
  77         .info = snd_soc_info_volsw_2r, \
  78         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  79         .private_value = (unsigned long)&(struct soc_mixer_control) \
  80                 {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  81                 .max = xmax, .invert = xinvert} }
  82 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
  83 {       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  84         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  85                   SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  86         .tlv.p  = (tlv_array), \
  87         .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
  88         .put    = snd_soc_put_volsw_s8, \
  89         .private_value = (unsigned long)&(struct soc_mixer_control) \
  90                 {.reg = xreg, .min = xmin, .max = xmax} }
  91 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
  92 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  93         .max = xmax, .texts = xtexts }
  94 #define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
  95         SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
  96 #define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
  97 {       .max = xmax, .texts = xtexts }
  98 #define SOC_ENUM(xname, xenum) \
  99 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 100         .info = snd_soc_info_enum_double, \
 101         .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 102         .private_value = (unsigned long)&xenum }
 103 #define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 104          xhandler_get, xhandler_put) \
 105 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 106         .info = snd_soc_info_volsw, \
 107         .get = xhandler_get, .put = xhandler_put, \
 108         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 109 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 110          xhandler_get, xhandler_put, tlv_array) \
 111 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 112         .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 113                  SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 114         .tlv.p = (tlv_array), \
 115         .info = snd_soc_info_volsw, \
 116         .get = xhandler_get, .put = xhandler_put, \
 117         .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 118 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 119 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 120         .info = snd_soc_info_bool_ext, \
 121         .get = xhandler_get, .put = xhandler_put, \
 122         .private_value = xdata }
 123 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 124 {       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 125         .info = snd_soc_info_enum_ext, \
 126         .get = xhandler_get, .put = xhandler_put, \
 127         .private_value = (unsigned long)&xenum }
 128
 129 /*
 130  * Bias levels
 131  *
 132  * @ON:      Bias is fully on for audio playback and capture operations.
 133  * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 134  *           stream start and stop operations.
 135  * @STANDBY: Low power standby state when no playback/capture operations are
 136  *           in progress. NOTE: The transition time between STANDBY and ON
 137  *           should be as fast as possible and no longer than 10ms.
 138  * @OFF:     Power Off. No restrictions on transition times.
 139  */
 140 enum snd_soc_bias_level {
 141         SND_SOC_BIAS_ON,
 142         SND_SOC_BIAS_PREPARE,
 143         SND_SOC_BIAS_STANDBY,
 144         SND_SOC_BIAS_OFF,
 145 };
 146
 147 /*
 148  * Digital Audio Interface (DAI) types
 149  */
 150 #define SND_SOC_DAI_AC97        0x1
 151 #define SND_SOC_DAI_I2S         0x2
 152 #define SND_SOC_DAI_PCM         0x4
 153 #define SND_SOC_DAI_AC97_BUS    0x8     /* for custom i.e. non ac97_codec.c */
 154
 155 /*
 156  * DAI hardware audio formats
 157  */
 158 #define SND_SOC_DAIFMT_I2S              0       /* I2S mode */
 159 #define SND_SOC_DAIFMT_RIGHT_J  1       /* Right justified mode */
 160 #define SND_SOC_DAIFMT_LEFT_J   2       /* Left Justified mode */
 161 #define SND_SOC_DAIFMT_DSP_A    3       /* L data msb after FRM or LRC */
 162 #define SND_SOC_DAIFMT_DSP_B    4       /* L data msb during FRM or LRC */
 163 #define SND_SOC_DAIFMT_AC97             5       /* AC97 */
 164
 165 #define SND_SOC_DAIFMT_MSB      SND_SOC_DAIFMT_LEFT_J
 166 #define SND_SOC_DAIFMT_LSB      SND_SOC_DAIFMT_RIGHT_J
 167
 168 /*
 169  * DAI Gating
 170  */
 171 #define SND_SOC_DAIFMT_CONT                     (0 << 4)        /* continuous clock */
 172 #define SND_SOC_DAIFMT_GATED            (1 << 4)        /* clock is gated when not Tx/Rx */
 173
 174 /*
 175  * DAI Sync
 176  * Synchronous LR (Left Right) clocks and Frame signals.
 177  */
 178 #define SND_SOC_DAIFMT_SYNC             (0 << 5)        /* Tx FRM = Rx FRM */
 179 #define SND_SOC_DAIFMT_ASYNC            (1 << 5)        /* Tx FRM ~ Rx FRM */
 180
 181 /*
 182  * TDM
 183  */
 184 #define SND_SOC_DAIFMT_TDM              (1 << 6)
 185
 186 /*
 187  * DAI hardware signal inversions
 188  */
 189 #define SND_SOC_DAIFMT_NB_NF            (0 << 8)        /* normal bclk + frm */
 190 #define SND_SOC_DAIFMT_NB_IF            (1 << 8)        /* normal bclk + inv frm */
 191 #define SND_SOC_DAIFMT_IB_NF            (2 << 8)        /* invert bclk + nor frm */
 192 #define SND_SOC_DAIFMT_IB_IF            (3 << 8)        /* invert bclk + frm */
 193
 194 /*
 195  * DAI hardware clock masters
 196  * This is wrt the codec, the inverse is true for the interface
 197  * i.e. if the codec is clk and frm master then the interface is
 198  * clk and frame slave.
 199  */
 200 #define SND_SOC_DAIFMT_CBM_CFM  (0 << 12) /* codec clk & frm master */
 201 #define SND_SOC_DAIFMT_CBS_CFM  (1 << 12) /* codec clk slave & frm master */
 202 #define SND_SOC_DAIFMT_CBM_CFS  (2 << 12) /* codec clk master & frame slave */
 203 #define SND_SOC_DAIFMT_CBS_CFS  (3 << 12) /* codec clk & frm slave */
 204
 205 #define SND_SOC_DAIFMT_FORMAT_MASK              0x000f
 206 #define SND_SOC_DAIFMT_CLOCK_MASK               0x00f0
 207 #define SND_SOC_DAIFMT_INV_MASK                 0x0f00
 208 #define SND_SOC_DAIFMT_MASTER_MASK              0xf000
 209
 210
 211 /*
 212  * Master Clock Directions
 213  */
 214 #define SND_SOC_CLOCK_IN        0
 215 #define SND_SOC_CLOCK_OUT       1
 216
 217 /*
 218  * AC97 codec ID's bitmask
 219  */
 220 #define SND_SOC_DAI_AC97_ID0    (1 << 0)
 221 #define SND_SOC_DAI_AC97_ID1    (1 << 1)
 222 #define SND_SOC_DAI_AC97_ID2    (1 << 2)
 223 #define SND_SOC_DAI_AC97_ID3    (1 << 3)
 224
 225 struct snd_soc_device;
 226 struct snd_soc_pcm_stream;
 227 struct snd_soc_ops;
 228 struct snd_soc_dai_mode;
 229 struct snd_soc_pcm_runtime;
 230 struct snd_soc_dai;
 231 struct snd_soc_codec;
 232 struct snd_soc_machine_config;
 233 struct soc_enum;
 234 struct snd_soc_ac97_ops;
 235 struct snd_soc_clock_info;
 236
 237 typedef int (*hw_write_t)(void *,const char* ,int);
 238 typedef int (*hw_read_t)(void *,char* ,int);
 239
 240 extern struct snd_ac97_bus_ops soc_ac97_ops;
 241
 242 /* pcm <-> DAI connect */
 243 void snd_soc_free_pcms(struct snd_soc_device *socdev);
 244 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 245 int snd_soc_register_card(struct snd_soc_device *socdev);
 246
 247 /* set runtime hw params */
 248 int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 249         const struct snd_pcm_hardware *hw);
 250
 251 /* codec IO */
 252 #define snd_soc_read(codec, reg) codec->read(codec, reg)
 253 #define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)
 254
 255 /* codec register bit access */
 256 int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 257                                 unsigned short mask, unsigned short value);
 258 int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 259                                 unsigned short mask, unsigned short value);
 260
 261 int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 262         struct snd_ac97_bus_ops *ops, int num);
 263 void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 264
 265 /* Digital Audio Interface clocking API.*/
 266 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 267         unsigned int freq, int dir);
 268
 269 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
 270         int div_id, int div);
 271
 272 int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
 273         int pll_id, unsigned int freq_in, unsigned int freq_out);
 274
 275 /* Digital Audio interface formatting */
 276 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);
 277
 278 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
 279         unsigned int mask, int slots);
 280
 281 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);
 282
 283 /* Digital Audio Interface mute */
 284 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);
 285
 286 /*
 287  *Controls
 288  */
 289 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 290         void *data, char *long_name);
 291 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 292         struct snd_ctl_elem_info *uinfo);
 293 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 294         struct snd_ctl_elem_info *uinfo);
 295 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 296         struct snd_ctl_elem_value *ucontrol);
 297 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 298         struct snd_ctl_elem_value *ucontrol);
 299 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 300         struct snd_ctl_elem_info *uinfo);
 301 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 302         struct snd_ctl_elem_info *uinfo);
 303 #define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 304 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 305         struct snd_ctl_elem_value *ucontrol);
 306 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 307         struct snd_ctl_elem_value *ucontrol);
 308 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 309         struct snd_ctl_elem_info *uinfo);
 310 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 311         struct snd_ctl_elem_value *ucontrol);
 312 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 313         struct snd_ctl_elem_value *ucontrol);
 314 int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 315         struct snd_ctl_elem_info *uinfo);
 316 int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 317         struct snd_ctl_elem_value *ucontrol);
 318 int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 319         struct snd_ctl_elem_value *ucontrol);
 320
 321 /* SoC PCM stream information */
 322 struct snd_soc_pcm_stream {
 323         char *stream_name;
 324         u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 325         unsigned int rates;             /* SNDRV_PCM_RATE_* */
 326         unsigned int rate_min;          /* min rate */
 327         unsigned int rate_max;          /* max rate */
 328         unsigned int channels_min;      /* min channels */
 329         unsigned int channels_max;      /* max channels */
 330         unsigned int active:1;          /* stream is in use */
 331 };
 332
 333 /* SoC audio ops */
 334 struct snd_soc_ops {
 335         int (*startup)(struct snd_pcm_substream *);
 336         void (*shutdown)(struct snd_pcm_substream *);
 337         int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 338         int (*hw_free)(struct snd_pcm_substream *);
 339         int (*prepare)(struct snd_pcm_substream *);
 340         int (*trigger)(struct snd_pcm_substream *, int);
 341 };
 342
 343 /* ASoC DAI ops */
 344 struct snd_soc_dai_ops {
 345         /* DAI clocking configuration */
 346         int (*set_sysclk)(struct snd_soc_dai *dai,
 347                 int clk_id, unsigned int freq, int dir);
 348         int (*set_pll)(struct snd_soc_dai *dai,
 349                 int pll_id, unsigned int freq_in, unsigned int freq_out);
 350         int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div);
 351
 352         /* DAI format configuration */
 353         int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
 354         int (*set_tdm_slot)(struct snd_soc_dai *dai,
 355                 unsigned int mask, int slots);
 356         int (*set_tristate)(struct snd_soc_dai *dai, int tristate);
 357
 358         /* digital mute */
 359         int (*digital_mute)(struct snd_soc_dai *dai, int mute);
 360 };
 361
 362 /* SoC  DAI (Digital Audio Interface) */
 363 struct snd_soc_dai {
 364         /* DAI description */
 365         char *name;
 366         unsigned int id;
 367         unsigned char type;
 368
 369         /* DAI callbacks */
 370         int (*probe)(struct platform_device *pdev,
 371                      struct snd_soc_dai *dai);
 372         void (*remove)(struct platform_device *pdev,
 373                        struct snd_soc_dai *dai);
 374         int (*suspend)(struct platform_device *pdev,
 375                 struct snd_soc_dai *dai);
 376         int (*resume)(struct platform_device *pdev,
 377                 struct snd_soc_dai *dai);
 378
 379         /* ops */
 380         struct snd_soc_ops ops;
 381         struct snd_soc_dai_ops dai_ops;
 382
 383         /* DAI capabilities */
 384         struct snd_soc_pcm_stream capture;
 385         struct snd_soc_pcm_stream playback;
 386
 387         /* DAI runtime info */
 388         struct snd_pcm_runtime *runtime;
 389         struct snd_soc_codec *codec;
 390         unsigned int active;
 391         unsigned char pop_wait:1;
 392         void *dma_data;
 393
 394         /* DAI private data */
 395         void *private_data;
 396 };
 397
 398 /* SoC Audio Codec */
 399 struct snd_soc_codec {
 400         char *name;
 401         struct module *owner;
 402         struct mutex mutex;
 403
 404         /* callbacks */
 405         int (*set_bias_level)(struct snd_soc_codec *,
 406                               enum snd_soc_bias_level level);
 407
 408         /* runtime */
 409         struct snd_card *card;
 410         struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 411         unsigned int active;
 412         unsigned int pcm_devs;
 413         void *private_data;
 414
 415         /* codec IO */
 416         void *control_data; /* codec control (i2c/3wire) data */
 417         unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 418         int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 419         int (*display_register)(struct snd_soc_codec *, char *,
 420                                 size_t, unsigned int);
 421         hw_write_t hw_write;
 422         hw_read_t hw_read;
 423         void *reg_cache;
 424         short reg_cache_size;
 425         short reg_cache_step;
 426
 427         /* dapm */
 428         struct list_head dapm_widgets;
 429         struct list_head dapm_paths;
 430         enum snd_soc_bias_level bias_level;
 431         enum snd_soc_bias_level suspend_bias_level;
 432         struct delayed_work delayed_work;
 433
 434         /* codec DAI's */
 435         struct snd_soc_dai *dai;
 436         unsigned int num_dai;
 437 };
 438
 439 /* codec device */
 440 struct snd_soc_codec_device {
 441         int (*probe)(struct platform_device *pdev);
 442         int (*remove)(struct platform_device *pdev);
 443         int (*suspend)(struct platform_device *pdev, pm_message_t state);
 444         int (*resume)(struct platform_device *pdev);
 445 };
 446
 447 /* SoC platform interface */
 448 struct snd_soc_platform {
 449         char *name;
 450
 451         int (*probe)(struct platform_device *pdev);
 452         int (*remove)(struct platform_device *pdev);
 453         int (*suspend)(struct platform_device *pdev,
 454                 struct snd_soc_dai *dai);
 455         int (*resume)(struct platform_device *pdev,
 456                 struct snd_soc_dai *dai);
 457
 458         /* pcm creation and destruction */
 459         int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
 460                 struct snd_pcm *);
 461         void (*pcm_free)(struct snd_pcm *);
 462
 463         /* platform stream ops */
 464         struct snd_pcm_ops *pcm_ops;
 465 };
 466
 467 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 468 struct snd_soc_dai_link  {
 469         char *name;                     /* Codec name */
 470         char *stream_name;              /* Stream name */
 471
 472         /* DAI */
 473         struct snd_soc_dai *codec_dai;
 474         struct snd_soc_dai *cpu_dai;
 475
 476         /* machine stream operations */
 477         struct snd_soc_ops *ops;
 478
 479         /* codec/machine specific init - e.g. add machine controls */
 480         int (*init)(struct snd_soc_codec *codec);
 481
 482         /* DAI pcm */
 483         struct snd_pcm *pcm;
 484 };
 485
 486 /* SoC machine */
 487 struct snd_soc_machine {
 488         char *name;
 489
 490         int (*probe)(struct platform_device *pdev);
 491         int (*remove)(struct platform_device *pdev);
 492
 493         /* the pre and post PM functions are used to do any PM work before and
 494          * after the codec and DAI's do any PM work. */
 495         int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 496         int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 497         int (*resume_pre)(struct platform_device *pdev);
 498         int (*resume_post)(struct platform_device *pdev);
 499
 500         /* callbacks */
 501         int (*set_bias_level)(struct snd_soc_machine *,
 502                               enum snd_soc_bias_level level);
 503
 504         /* CPU <--> Codec DAI links  */
 505         struct snd_soc_dai_link *dai_link;
 506         int num_links;
 507 };
 508
 509 /* SoC Device - the audio subsystem */
 510 struct snd_soc_device {
 511         struct device *dev;
 512         struct snd_soc_machine *machine;
 513         struct snd_soc_platform *platform;
 514         struct snd_soc_codec *codec;
 515         struct snd_soc_codec_device *codec_dev;
 516         struct delayed_work delayed_work;
 517         struct work_struct deferred_resume_work;
 518         void *codec_data;
 519 };
 520
 521 /* runtime channel data */
 522 struct snd_soc_pcm_runtime {
 523         struct snd_soc_dai_link *dai;
 524         struct snd_soc_device *socdev;
 525 };
 526
 527 /* mixer control */
 528 struct soc_mixer_control {
 529         int min, max;
 530         unsigned int reg, rreg, shift, rshift, invert;
 531 };
 532
 533 /* enumerated kcontrol */
 534 struct soc_enum {
 535         unsigned short reg;
 536         unsigned short reg2;
 537         unsigned char shift_l;
 538         unsigned char shift_r;
 539         unsigned int max;
 540         const char **texts;
 541         void *dapm;
 542 };
 543
 544 #endif