LXR linux/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 <linux/interrupt.h>
  20#include <linux/kernel.h>
  21#include <sound/core.h>
  22#include <sound/pcm.h>
  23#include <sound/control.h>
  24#include <sound/ac97_codec.h>
  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, .rshift = xshift, .max = xmax, \
  32        .invert = xinvert})
  33#define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  34        ((unsigned long)&(struct soc_mixer_control) \
  35        {.reg = xreg, .max = xmax, .invert = xinvert})
  36#define SOC_SINGLE(xname, reg, shift, max, invert) \
  37{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  38        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  39        .put = snd_soc_put_volsw, \
  40        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  41#define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  42{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  43        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  44                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  45        .tlv.p = (tlv_array), \
  46        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  47        .put = snd_soc_put_volsw, \
  48        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  49#define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \
  50{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  51        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  52        .put = snd_soc_put_volsw, \
  53        .private_value = (unsigned long)&(struct soc_mixer_control) \
  54                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
  55                 .max = xmax, .invert = xinvert} }
  56#define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
  57{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  58        .info = snd_soc_info_volsw_2r, \
  59        .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  60        .private_value = (unsigned long)&(struct soc_mixer_control) \
  61                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  62                .max = xmax, .invert = xinvert} }
  63#define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \
  64{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  65        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  66                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  67        .tlv.p = (tlv_array), \
  68        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  69        .put = snd_soc_put_volsw, \
  70        .private_value = (unsigned long)&(struct soc_mixer_control) \
  71                {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
  72                 .max = xmax, .invert = xinvert} }
  73#define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
  74{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  75        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  76                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  77        .tlv.p = (tlv_array), \
  78        .info = snd_soc_info_volsw_2r, \
  79        .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  80        .private_value = (unsigned long)&(struct soc_mixer_control) \
  81                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  82                .max = xmax, .invert = xinvert} }
  83#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
  84{       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  85        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  86                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  87        .tlv.p  = (tlv_array), \
  88        .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
  89        .put    = snd_soc_put_volsw_s8, \
  90        .private_value = (unsigned long)&(struct soc_mixer_control) \
  91                {.reg = xreg, .min = xmin, .max = xmax} }
  92#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
  93{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  94        .max = xmax, .texts = xtexts }
  95#define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
  96        SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
  97#define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
  98{       .max = xmax, .texts = xtexts }
  99#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
 100{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 101        .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
 102#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
 103        SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
 104#define SOC_ENUM(xname, xenum) \
 105{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 106        .info = snd_soc_info_enum_double, \
 107        .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 108        .private_value = (unsigned long)&xenum }
 109#define SOC_VALUE_ENUM(xname, xenum) \
 110{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 111        .info = snd_soc_info_enum_double, \
 112        .get = snd_soc_get_value_enum_double, \
 113        .put = snd_soc_put_value_enum_double, \
 114        .private_value = (unsigned long)&xenum }
 115#define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 116         xhandler_get, xhandler_put) \
 117{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 118        .info = snd_soc_info_volsw, \
 119        .get = xhandler_get, .put = xhandler_put, \
 120        .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 121#define SOC_DOUBLE_EXT(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 122         xhandler_get, xhandler_put) \
 123{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 124        .info = snd_soc_info_volsw, \
 125        .get = xhandler_get, .put = xhandler_put, \
 126        .private_value = (unsigned long)&(struct soc_mixer_control) \
 127                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 128                 .max = xmax, .invert = xinvert} }
 129#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 130         xhandler_get, xhandler_put, tlv_array) \
 131{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 132        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 133                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 134        .tlv.p = (tlv_array), \
 135        .info = snd_soc_info_volsw, \
 136        .get = xhandler_get, .put = xhandler_put, \
 137        .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 138#define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 139         xhandler_get, xhandler_put, tlv_array) \
 140{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 141        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 142                 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 143        .tlv.p = (tlv_array), \
 144        .info = snd_soc_info_volsw, \
 145        .get = xhandler_get, .put = xhandler_put, \
 146        .private_value = (unsigned long)&(struct soc_mixer_control) \
 147                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 148                .max = xmax, .invert = xinvert} }
 149#define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 150         xhandler_get, xhandler_put, tlv_array) \
 151{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 152        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 153                 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 154        .tlv.p = (tlv_array), \
 155        .info = snd_soc_info_volsw_2r, \
 156        .get = xhandler_get, .put = xhandler_put, \
 157        .private_value = (unsigned long)&(struct soc_mixer_control) \
 158                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 159                .max = xmax, .invert = xinvert} }
 160#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 161{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 162        .info = snd_soc_info_bool_ext, \
 163        .get = xhandler_get, .put = xhandler_put, \
 164        .private_value = xdata }
 165#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 166{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 167        .info = snd_soc_info_enum_ext, \
 168        .get = xhandler_get, .put = xhandler_put, \
 169        .private_value = (unsigned long)&xenum }
 170
 171/*
 172 * Bias levels
 173 *
 174 * @ON:      Bias is fully on for audio playback and capture operations.
 175 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 176 *           stream start and stop operations.
 177 * @STANDBY: Low power standby state when no playback/capture operations are
 178 *           in progress. NOTE: The transition time between STANDBY and ON
 179 *           should be as fast as possible and no longer than 10ms.
 180 * @OFF:     Power Off. No restrictions on transition times.
 181 */
 182enum snd_soc_bias_level {
 183        SND_SOC_BIAS_ON,
 184        SND_SOC_BIAS_PREPARE,
 185        SND_SOC_BIAS_STANDBY,
 186        SND_SOC_BIAS_OFF,
 187};
 188
 189struct snd_jack;
 190struct snd_soc_card;
 191struct snd_soc_device;
 192struct snd_soc_pcm_stream;
 193struct snd_soc_ops;
 194struct snd_soc_dai_mode;
 195struct snd_soc_pcm_runtime;
 196struct snd_soc_dai;
 197struct snd_soc_platform;
 198struct snd_soc_codec;
 199struct soc_enum;
 200struct snd_soc_ac97_ops;
 201struct snd_soc_jack;
 202struct snd_soc_jack_pin;
 203#ifdef CONFIG_GPIOLIB
 204struct snd_soc_jack_gpio;
 205#endif
 206
 207typedef int (*hw_write_t)(void *,const char* ,int);
 208
 209extern struct snd_ac97_bus_ops soc_ac97_ops;
 210
 211enum snd_soc_control_type {
 212        SND_SOC_CUSTOM,
 213        SND_SOC_I2C,
 214        SND_SOC_SPI,
 215};
 216
 217int snd_soc_register_platform(struct snd_soc_platform *platform);
 218void snd_soc_unregister_platform(struct snd_soc_platform *platform);
 219int snd_soc_register_codec(struct snd_soc_codec *codec);
 220void snd_soc_unregister_codec(struct snd_soc_codec *codec);
 221int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg);
 222int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 223                               int addr_bits, int data_bits,
 224                               enum snd_soc_control_type control);
 225
 226/* pcm <-> DAI connect */
 227void snd_soc_free_pcms(struct snd_soc_device *socdev);
 228int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 229
 230/* Utility functions to get clock rates from various things */
 231int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 232int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 233int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 234int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 235
 236/* set runtime hw params */
 237int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 238        const struct snd_pcm_hardware *hw);
 239
 240/* Jack reporting */
 241int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
 242                     struct snd_soc_jack *jack);
 243void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 244int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 245                          struct snd_soc_jack_pin *pins);
 246#ifdef CONFIG_GPIOLIB
 247int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 248                        struct snd_soc_jack_gpio *gpios);
 249void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 250                        struct snd_soc_jack_gpio *gpios);
 251#endif
 252
 253/* codec register bit access */
 254int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 255                                unsigned int mask, unsigned int value);
 256int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 257                                unsigned int mask, unsigned int value);
 258
 259int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 260        struct snd_ac97_bus_ops *ops, int num);
 261void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 262
 263/*
 264 *Controls
 265 */
 266struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 267        void *data, char *long_name);
 268int snd_soc_add_controls(struct snd_soc_codec *codec,
 269        const struct snd_kcontrol_new *controls, int num_controls);
 270int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 271        struct snd_ctl_elem_info *uinfo);
 272int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 273        struct snd_ctl_elem_info *uinfo);
 274int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 275        struct snd_ctl_elem_value *ucontrol);
 276int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 277        struct snd_ctl_elem_value *ucontrol);
 278int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
 279        struct snd_ctl_elem_value *ucontrol);
 280int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 281        struct snd_ctl_elem_value *ucontrol);
 282int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 283        struct snd_ctl_elem_info *uinfo);
 284int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 285        struct snd_ctl_elem_info *uinfo);
 286#define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 287int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 288        struct snd_ctl_elem_value *ucontrol);
 289int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 290        struct snd_ctl_elem_value *ucontrol);
 291int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 292        struct snd_ctl_elem_info *uinfo);
 293int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 294        struct snd_ctl_elem_value *ucontrol);
 295int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 296        struct snd_ctl_elem_value *ucontrol);
 297int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 298        struct snd_ctl_elem_info *uinfo);
 299int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 300        struct snd_ctl_elem_value *ucontrol);
 301int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 302        struct snd_ctl_elem_value *ucontrol);
 303
 304/**
 305 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 306 *
 307 * @pin:    name of the pin to update
 308 * @mask:   bits to check for in reported jack status
 309 * @invert: if non-zero then pin is enabled when status is not reported
 310 */
 311struct snd_soc_jack_pin {
 312        struct list_head list;
 313        const char *pin;
 314        int mask;
 315        bool invert;
 316};
 317
 318/**
 319 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 320 *
 321 * @gpio:         gpio number
 322 * @name:         gpio name
 323 * @report:       value to report when jack detected
 324 * @invert:       report presence in low state
 325 * @debouce_time: debouce time in ms
 326 */
 327#ifdef CONFIG_GPIOLIB
 328struct snd_soc_jack_gpio {
 329        unsigned int gpio;
 330        const char *name;
 331        int report;
 332        int invert;
 333        int debounce_time;
 334        struct snd_soc_jack *jack;
 335        struct work_struct work;
 336
 337        int (*jack_status_check)(void);
 338};
 339#endif
 340
 341struct snd_soc_jack {
 342        struct snd_jack *jack;
 343        struct snd_soc_card *card;
 344        struct list_head pins;
 345        int status;
 346};
 347
 348/* SoC PCM stream information */
 349struct snd_soc_pcm_stream {
 350        char *stream_name;
 351        u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 352        unsigned int rates;             /* SNDRV_PCM_RATE_* */
 353        unsigned int rate_min;          /* min rate */
 354        unsigned int rate_max;          /* max rate */
 355        unsigned int channels_min;      /* min channels */
 356        unsigned int channels_max;      /* max channels */
 357        unsigned int active:1;          /* stream is in use */
 358};
 359
 360/* SoC audio ops */
 361struct snd_soc_ops {
 362        int (*startup)(struct snd_pcm_substream *);
 363        void (*shutdown)(struct snd_pcm_substream *);
 364        int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 365        int (*hw_free)(struct snd_pcm_substream *);
 366        int (*prepare)(struct snd_pcm_substream *);
 367        int (*trigger)(struct snd_pcm_substream *, int);
 368};
 369
 370/* SoC Audio Codec */
 371struct snd_soc_codec {
 372        char *name;
 373        struct module *owner;
 374        struct mutex mutex;
 375        struct device *dev;
 376        struct snd_soc_device *socdev;
 377
 378        struct list_head list;
 379
 380        /* callbacks */
 381        int (*set_bias_level)(struct snd_soc_codec *,
 382                              enum snd_soc_bias_level level);
 383
 384        /* runtime */
 385        struct snd_card *card;
 386        struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 387        unsigned int active;
 388        unsigned int pcm_devs;
 389        void *private_data;
 390
 391        /* codec IO */
 392        void *control_data; /* codec control (i2c/3wire) data */
 393        unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 394        int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 395        int (*display_register)(struct snd_soc_codec *, char *,
 396                                size_t, unsigned int);
 397        int (*volatile_register)(unsigned int);
 398        int (*readable_register)(unsigned int);
 399        hw_write_t hw_write;
 400        unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
 401        void *reg_cache;
 402        short reg_cache_size;
 403        short reg_cache_step;
 404
 405        /* dapm */
 406        u32 pop_time;
 407        struct list_head dapm_widgets;
 408        struct list_head dapm_paths;
 409        enum snd_soc_bias_level bias_level;
 410        enum snd_soc_bias_level suspend_bias_level;
 411        struct delayed_work delayed_work;
 412
 413        /* codec DAI's */
 414        struct snd_soc_dai *dai;
 415        unsigned int num_dai;
 416
 417#ifdef CONFIG_DEBUG_FS
 418        struct dentry *debugfs_codec_root;
 419        struct dentry *debugfs_reg;
 420        struct dentry *debugfs_pop_time;
 421        struct dentry *debugfs_dapm;
 422#endif
 423};
 424
 425/* codec device */
 426struct snd_soc_codec_device {
 427        int (*probe)(struct platform_device *pdev);
 428        int (*remove)(struct platform_device *pdev);
 429        int (*suspend)(struct platform_device *pdev, pm_message_t state);
 430        int (*resume)(struct platform_device *pdev);
 431};
 432
 433/* SoC platform interface */
 434struct snd_soc_platform {
 435        char *name;
 436        struct list_head list;
 437
 438        int (*probe)(struct platform_device *pdev);
 439        int (*remove)(struct platform_device *pdev);
 440        int (*suspend)(struct snd_soc_dai *dai);
 441        int (*resume)(struct snd_soc_dai *dai);
 442
 443        /* pcm creation and destruction */
 444        int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
 445                struct snd_pcm *);
 446        void (*pcm_free)(struct snd_pcm *);
 447
 448        /* platform stream ops */
 449        struct snd_pcm_ops *pcm_ops;
 450};
 451
 452/* SoC machine DAI configuration, glues a codec and cpu DAI together */
 453struct snd_soc_dai_link  {
 454        char *name;                     /* Codec name */
 455        char *stream_name;              /* Stream name */
 456
 457        /* DAI */
 458        struct snd_soc_dai *codec_dai;
 459        struct snd_soc_dai *cpu_dai;
 460
 461        /* machine stream operations */
 462        struct snd_soc_ops *ops;
 463
 464        /* codec/machine specific init - e.g. add machine controls */
 465        int (*init)(struct snd_soc_codec *codec);
 466
 467        /* Symmetry requirements */
 468        unsigned int symmetric_rates:1;
 469
 470        /* Symmetry data - only valid if symmetry is being enforced */
 471        unsigned int rate;
 472
 473        /* DAI pcm */
 474        struct snd_pcm *pcm;
 475};
 476
 477/* SoC card */
 478struct snd_soc_card {
 479        char *name;
 480        struct device *dev;
 481
 482        struct list_head list;
 483
 484        int instantiated;
 485
 486        int (*probe)(struct platform_device *pdev);
 487        int (*remove)(struct platform_device *pdev);
 488
 489        /* the pre and post PM functions are used to do any PM work before and
 490         * after the codec and DAI's do any PM work. */
 491        int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 492        int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 493        int (*resume_pre)(struct platform_device *pdev);
 494        int (*resume_post)(struct platform_device *pdev);
 495
 496        /* callbacks */
 497        int (*set_bias_level)(struct snd_soc_card *,
 498                              enum snd_soc_bias_level level);
 499
 500        /* CPU <--> Codec DAI links  */
 501        struct snd_soc_dai_link *dai_link;
 502        int num_links;
 503
 504        struct snd_soc_device *socdev;
 505
 506        struct snd_soc_codec *codec;
 507
 508        struct snd_soc_platform *platform;
 509        struct delayed_work delayed_work;
 510        struct work_struct deferred_resume_work;
 511};
 512
 513/* SoC Device - the audio subsystem */
 514struct snd_soc_device {
 515        struct device *dev;
 516        struct snd_soc_card *card;
 517        struct snd_soc_codec_device *codec_dev;
 518        void *codec_data;
 519};
 520
 521/* runtime channel data */
 522struct snd_soc_pcm_runtime {
 523        struct snd_soc_dai_link *dai;
 524        struct snd_soc_device *socdev;
 525};
 526
 527/* mixer control */
 528struct soc_mixer_control {
 529        int min, max;
 530        unsigned int reg, rreg, shift, rshift, invert;
 531};
 532
 533/* enumerated kcontrol */
 534struct 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        unsigned int mask;
 541        const char **texts;
 542        const unsigned int *values;
 543        void *dapm;
 544};
 545
 546/* codec IO */
 547static inline unsigned int snd_soc_read(struct snd_soc_codec *codec,
 548                                        unsigned int reg)
 549{
 550        return codec->read(codec, reg);
 551}
 552
 553static inline unsigned int snd_soc_write(struct snd_soc_codec *codec,
 554                                         unsigned int reg, unsigned int val)
 555{
 556        return codec->write(codec, reg, val);
 557}
 558
 559#include <sound/soc-dai.h>
 560
 561#endif
 562