linux/include/sound/soc.h
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   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/notifier.h>
  19#include <linux/workqueue.h>
  20#include <linux/interrupt.h>
  21#include <linux/kernel.h>
  22#include <sound/core.h>
  23#include <sound/pcm.h>
  24#include <sound/control.h>
  25#include <sound/ac97_codec.h>
  26
  27/*
  28 * Convenience kcontrol builders
  29 */
  30#define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
  31        ((unsigned long)&(struct soc_mixer_control) \
  32        {.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
  33        .platform_max = xmax, .invert = xinvert})
  34#define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
  35        ((unsigned long)&(struct soc_mixer_control) \
  36        {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
  37#define SOC_SINGLE(xname, reg, shift, max, invert) \
  38{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  39        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  40        .put = snd_soc_put_volsw, \
  41        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  42#define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
  43{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
  44        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  45                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  46        .tlv.p = (tlv_array), \
  47        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
  48        .put = snd_soc_put_volsw, \
  49        .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
  50#define SOC_DOUBLE(xname, xreg, shift_left, shift_right, xmax, xinvert) \
  51{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  52        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  53        .put = snd_soc_put_volsw, \
  54        .private_value = (unsigned long)&(struct soc_mixer_control) \
  55                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
  56                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
  57#define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
  58{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  59        .info = snd_soc_info_volsw_2r, \
  60        .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  61        .private_value = (unsigned long)&(struct soc_mixer_control) \
  62                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  63                .max = xmax, .platform_max = xmax, .invert = xinvert} }
  64#define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert, tlv_array) \
  65{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  66        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  67                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  68        .tlv.p = (tlv_array), \
  69        .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
  70        .put = snd_soc_put_volsw, \
  71        .private_value = (unsigned long)&(struct soc_mixer_control) \
  72                {.reg = xreg, .shift = shift_left, .rshift = shift_right,\
  73                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
  74#define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
  75{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
  76        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
  77                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
  78        .tlv.p = (tlv_array), \
  79        .info = snd_soc_info_volsw_2r, \
  80        .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
  81        .private_value = (unsigned long)&(struct soc_mixer_control) \
  82                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
  83                .max = xmax, .platform_max = xmax, .invert = xinvert} }
  84#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
  85{       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
  86        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
  87                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
  88        .tlv.p  = (tlv_array), \
  89        .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
  90        .put    = snd_soc_put_volsw_s8, \
  91        .private_value = (unsigned long)&(struct soc_mixer_control) \
  92                {.reg = xreg, .min = xmin, .max = xmax, \
  93                 .platform_max = xmax} }
  94#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
  95{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
  96        .max = xmax, .texts = xtexts }
  97#define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
  98        SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
  99#define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
 100{       .max = xmax, .texts = xtexts }
 101#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
 102{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
 103        .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
 104#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
 105        SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
 106#define SOC_ENUM(xname, xenum) \
 107{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 108        .info = snd_soc_info_enum_double, \
 109        .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
 110        .private_value = (unsigned long)&xenum }
 111#define SOC_VALUE_ENUM(xname, xenum) \
 112{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
 113        .info = snd_soc_info_enum_double, \
 114        .get = snd_soc_get_value_enum_double, \
 115        .put = snd_soc_put_value_enum_double, \
 116        .private_value = (unsigned long)&xenum }
 117#define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
 118         xhandler_get, xhandler_put) \
 119{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 120        .info = snd_soc_info_volsw, \
 121        .get = xhandler_get, .put = xhandler_put, \
 122        .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 123#define SOC_DOUBLE_EXT(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 124         xhandler_get, xhandler_put) \
 125{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
 126        .info = snd_soc_info_volsw, \
 127        .get = xhandler_get, .put = xhandler_put, \
 128        .private_value = (unsigned long)&(struct soc_mixer_control) \
 129                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 130                 .max = xmax, .platform_max = xmax, .invert = xinvert} }
 131#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 132         xhandler_get, xhandler_put, tlv_array) \
 133{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 134        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 135                 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 136        .tlv.p = (tlv_array), \
 137        .info = snd_soc_info_volsw, \
 138        .get = xhandler_get, .put = xhandler_put, \
 139        .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 140#define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
 141         xhandler_get, xhandler_put, tlv_array) \
 142{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 143        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 144                 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 145        .tlv.p = (tlv_array), \
 146        .info = snd_soc_info_volsw, \
 147        .get = xhandler_get, .put = xhandler_put, \
 148        .private_value = (unsigned long)&(struct soc_mixer_control) \
 149                {.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 150                .max = xmax, .platform_max = xmax, .invert = xinvert} }
 151#define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
 152         xhandler_get, xhandler_put, tlv_array) \
 153{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 154        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
 155                 SNDRV_CTL_ELEM_ACCESS_READWRITE, \
 156        .tlv.p = (tlv_array), \
 157        .info = snd_soc_info_volsw_2r, \
 158        .get = xhandler_get, .put = xhandler_put, \
 159        .private_value = (unsigned long)&(struct soc_mixer_control) \
 160                {.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 161                .max = xmax, .platform_max = xmax, .invert = xinvert} }
 162#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 163{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 164        .info = snd_soc_info_bool_ext, \
 165        .get = xhandler_get, .put = xhandler_put, \
 166        .private_value = xdata }
 167#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 168{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 169        .info = snd_soc_info_enum_ext, \
 170        .get = xhandler_get, .put = xhandler_put, \
 171        .private_value = (unsigned long)&xenum }
 172
 173/*
 174 * Simplified versions of above macros, declaring a struct and calculating
 175 * ARRAY_SIZE internally
 176 */
 177#define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
 178        struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
 179                                                ARRAY_SIZE(xtexts), xtexts)
 180#define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
 181        SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
 182#define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
 183        struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
 184#define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
 185        struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
 186                                                        ARRAY_SIZE(xtexts), xtexts, xvalues)
 187#define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
 188        SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
 189
 190/*
 191 * Bias levels
 192 *
 193 * @ON:      Bias is fully on for audio playback and capture operations.
 194 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 195 *           stream start and stop operations.
 196 * @STANDBY: Low power standby state when no playback/capture operations are
 197 *           in progress. NOTE: The transition time between STANDBY and ON
 198 *           should be as fast as possible and no longer than 10ms.
 199 * @OFF:     Power Off. No restrictions on transition times.
 200 */
 201enum snd_soc_bias_level {
 202        SND_SOC_BIAS_ON,
 203        SND_SOC_BIAS_PREPARE,
 204        SND_SOC_BIAS_STANDBY,
 205        SND_SOC_BIAS_OFF,
 206};
 207
 208struct snd_jack;
 209struct snd_soc_card;
 210struct snd_soc_device;
 211struct snd_soc_pcm_stream;
 212struct snd_soc_ops;
 213struct snd_soc_dai_mode;
 214struct snd_soc_pcm_runtime;
 215struct snd_soc_dai;
 216struct snd_soc_platform;
 217struct snd_soc_dai_link;
 218struct snd_soc_codec;
 219struct soc_enum;
 220struct snd_soc_ac97_ops;
 221struct snd_soc_jack;
 222struct snd_soc_jack_pin;
 223#ifdef CONFIG_GPIOLIB
 224struct snd_soc_jack_gpio;
 225#endif
 226
 227typedef int (*hw_write_t)(void *,const char* ,int);
 228
 229extern struct snd_ac97_bus_ops soc_ac97_ops;
 230
 231enum snd_soc_control_type {
 232        SND_SOC_CUSTOM,
 233        SND_SOC_I2C,
 234        SND_SOC_SPI,
 235};
 236
 237int snd_soc_register_platform(struct snd_soc_platform *platform);
 238void snd_soc_unregister_platform(struct snd_soc_platform *platform);
 239int snd_soc_register_codec(struct snd_soc_codec *codec);
 240void snd_soc_unregister_codec(struct snd_soc_codec *codec);
 241int snd_soc_codec_volatile_register(struct snd_soc_codec *codec, int reg);
 242int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
 243                               int addr_bits, int data_bits,
 244                               enum snd_soc_control_type control);
 245
 246/* pcm <-> DAI connect */
 247void snd_soc_free_pcms(struct snd_soc_device *socdev);
 248int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 249
 250/* Utility functions to get clock rates from various things */
 251int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
 252int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
 253int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
 254int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
 255
 256/* set runtime hw params */
 257int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
 258        const struct snd_pcm_hardware *hw);
 259
 260/* Jack reporting */
 261int snd_soc_jack_new(struct snd_soc_card *card, const char *id, int type,
 262                     struct snd_soc_jack *jack);
 263void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
 264int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
 265                          struct snd_soc_jack_pin *pins);
 266void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
 267                                    struct notifier_block *nb);
 268void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
 269                                      struct notifier_block *nb);
 270#ifdef CONFIG_GPIOLIB
 271int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 272                        struct snd_soc_jack_gpio *gpios);
 273void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 274                        struct snd_soc_jack_gpio *gpios);
 275#endif
 276
 277/* codec register bit access */
 278int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
 279                                unsigned int mask, unsigned int value);
 280int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
 281                               unsigned short reg, unsigned int mask,
 282                               unsigned int value);
 283int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 284                                unsigned int mask, unsigned int value);
 285
 286int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
 287        struct snd_ac97_bus_ops *ops, int num);
 288void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);
 289
 290/*
 291 *Controls
 292 */
 293struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 294        void *data, char *long_name);
 295int snd_soc_add_controls(struct snd_soc_codec *codec,
 296        const struct snd_kcontrol_new *controls, int num_controls);
 297int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 298        struct snd_ctl_elem_info *uinfo);
 299int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 300        struct snd_ctl_elem_info *uinfo);
 301int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 302        struct snd_ctl_elem_value *ucontrol);
 303int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 304        struct snd_ctl_elem_value *ucontrol);
 305int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
 306        struct snd_ctl_elem_value *ucontrol);
 307int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
 308        struct snd_ctl_elem_value *ucontrol);
 309int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 310        struct snd_ctl_elem_info *uinfo);
 311int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 312        struct snd_ctl_elem_info *uinfo);
 313#define snd_soc_info_bool_ext           snd_ctl_boolean_mono_info
 314int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 315        struct snd_ctl_elem_value *ucontrol);
 316int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 317        struct snd_ctl_elem_value *ucontrol);
 318int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 319        struct snd_ctl_elem_info *uinfo);
 320int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 321        struct snd_ctl_elem_value *ucontrol);
 322int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
 323        struct snd_ctl_elem_value *ucontrol);
 324int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
 325        struct snd_ctl_elem_info *uinfo);
 326int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
 327        struct snd_ctl_elem_value *ucontrol);
 328int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
 329        struct snd_ctl_elem_value *ucontrol);
 330int snd_soc_limit_volume(struct snd_soc_codec *codec,
 331        const char *name, int max);
 332
 333/**
 334 * struct snd_soc_jack_pin - Describes a pin to update based on jack detection
 335 *
 336 * @pin:    name of the pin to update
 337 * @mask:   bits to check for in reported jack status
 338 * @invert: if non-zero then pin is enabled when status is not reported
 339 */
 340struct snd_soc_jack_pin {
 341        struct list_head list;
 342        const char *pin;
 343        int mask;
 344        bool invert;
 345};
 346
 347/**
 348 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 349 *
 350 * @gpio:         gpio number
 351 * @name:         gpio name
 352 * @report:       value to report when jack detected
 353 * @invert:       report presence in low state
 354 * @debouce_time: debouce time in ms
 355 */
 356#ifdef CONFIG_GPIOLIB
 357struct snd_soc_jack_gpio {
 358        unsigned int gpio;
 359        const char *name;
 360        int report;
 361        int invert;
 362        int debounce_time;
 363        struct snd_soc_jack *jack;
 364        struct work_struct work;
 365
 366        int (*jack_status_check)(void);
 367};
 368#endif
 369
 370struct snd_soc_jack {
 371        struct snd_jack *jack;
 372        struct snd_soc_card *card;
 373        struct list_head pins;
 374        int status;
 375        struct blocking_notifier_head notifier;
 376};
 377
 378/* SoC PCM stream information */
 379struct snd_soc_pcm_stream {
 380        char *stream_name;
 381        u64 formats;                    /* SNDRV_PCM_FMTBIT_* */
 382        unsigned int rates;             /* SNDRV_PCM_RATE_* */
 383        unsigned int rate_min;          /* min rate */
 384        unsigned int rate_max;          /* max rate */
 385        unsigned int channels_min;      /* min channels */
 386        unsigned int channels_max;      /* max channels */
 387        unsigned int active;            /* stream is in use */
 388        void *dma_data;                 /* used by platform code */
 389};
 390
 391/* SoC audio ops */
 392struct snd_soc_ops {
 393        int (*startup)(struct snd_pcm_substream *);
 394        void (*shutdown)(struct snd_pcm_substream *);
 395        int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
 396        int (*hw_free)(struct snd_pcm_substream *);
 397        int (*prepare)(struct snd_pcm_substream *);
 398        int (*trigger)(struct snd_pcm_substream *, int);
 399};
 400
 401/* SoC Audio Codec */
 402struct snd_soc_codec {
 403        char *name;
 404        struct module *owner;
 405        struct mutex mutex;
 406        struct device *dev;
 407        struct snd_soc_device *socdev;
 408
 409        struct list_head list;
 410
 411        /* callbacks */
 412        int (*set_bias_level)(struct snd_soc_codec *,
 413                              enum snd_soc_bias_level level);
 414
 415        /* runtime */
 416        struct snd_card *card;
 417        struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 418        unsigned int active;
 419        unsigned int pcm_devs;
 420        void *drvdata;
 421
 422        /* codec IO */
 423        void *control_data; /* codec control (i2c/3wire) data */
 424        unsigned int (*read)(struct snd_soc_codec *, unsigned int);
 425        int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
 426        int (*display_register)(struct snd_soc_codec *, char *,
 427                                size_t, unsigned int);
 428        int (*volatile_register)(unsigned int);
 429        int (*readable_register)(unsigned int);
 430        hw_write_t hw_write;
 431        unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
 432        void *reg_cache;
 433        short reg_cache_size;
 434        short reg_cache_step;
 435
 436        unsigned int idle_bias_off:1; /* Use BIAS_OFF instead of STANDBY */
 437        unsigned int cache_only:1;  /* Suppress writes to hardware */
 438        unsigned int cache_sync:1; /* Cache needs to be synced to hardware */
 439
 440        /* dapm */
 441        u32 pop_time;
 442        struct list_head dapm_widgets;
 443        struct list_head dapm_paths;
 444        enum snd_soc_bias_level bias_level;
 445        enum snd_soc_bias_level suspend_bias_level;
 446        struct delayed_work delayed_work;
 447
 448        /* codec DAI's */
 449        struct snd_soc_dai *dai;
 450        unsigned int num_dai;
 451
 452#ifdef CONFIG_DEBUG_FS
 453        struct dentry *debugfs_codec_root;
 454        struct dentry *debugfs_reg;
 455        struct dentry *debugfs_pop_time;
 456        struct dentry *debugfs_dapm;
 457#endif
 458};
 459
 460/* codec device */
 461struct snd_soc_codec_device {
 462        int (*probe)(struct platform_device *pdev);
 463        int (*remove)(struct platform_device *pdev);
 464        int (*suspend)(struct platform_device *pdev, pm_message_t state);
 465        int (*resume)(struct platform_device *pdev);
 466};
 467
 468/* SoC platform interface */
 469struct snd_soc_platform {
 470        char *name;
 471        struct list_head list;
 472
 473        int (*probe)(struct platform_device *pdev);
 474        int (*remove)(struct platform_device *pdev);
 475        int (*suspend)(struct snd_soc_dai_link *dai_link);
 476        int (*resume)(struct snd_soc_dai_link *dai_link);
 477
 478        /* pcm creation and destruction */
 479        int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
 480                struct snd_pcm *);
 481        void (*pcm_free)(struct snd_pcm *);
 482
 483        /*
 484         * For platform caused delay reporting.
 485         * Optional.
 486         */
 487        snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
 488                struct snd_soc_dai *);
 489
 490        /* platform stream ops */
 491        struct snd_pcm_ops *pcm_ops;
 492};
 493
 494/* SoC machine DAI configuration, glues a codec and cpu DAI together */
 495struct snd_soc_dai_link  {
 496        char *name;                     /* Codec name */
 497        char *stream_name;              /* Stream name */
 498
 499        /* DAI */
 500        struct snd_soc_dai *codec_dai;
 501        struct snd_soc_dai *cpu_dai;
 502
 503        /* machine stream operations */
 504        struct snd_soc_ops *ops;
 505
 506        /* codec/machine specific init - e.g. add machine controls */
 507        int (*init)(struct snd_soc_codec *codec);
 508
 509        /* Keep DAI active over suspend */
 510        unsigned int ignore_suspend:1;
 511
 512        /* Symmetry requirements */
 513        unsigned int symmetric_rates:1;
 514
 515        /* Symmetry data - only valid if symmetry is being enforced */
 516        unsigned int rate;
 517
 518        /* DAI pcm */
 519        struct snd_pcm *pcm;
 520};
 521
 522/* SoC card */
 523struct snd_soc_card {
 524        char *name;
 525        struct device *dev;
 526
 527        struct list_head list;
 528
 529        int instantiated;
 530
 531        int (*probe)(struct platform_device *pdev);
 532        int (*remove)(struct platform_device *pdev);
 533
 534        /* the pre and post PM functions are used to do any PM work before and
 535         * after the codec and DAI's do any PM work. */
 536        int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
 537        int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 538        int (*resume_pre)(struct platform_device *pdev);
 539        int (*resume_post)(struct platform_device *pdev);
 540
 541        /* callbacks */
 542        int (*set_bias_level)(struct snd_soc_card *,
 543                              enum snd_soc_bias_level level);
 544
 545        long pmdown_time;
 546
 547        /* CPU <--> Codec DAI links  */
 548        struct snd_soc_dai_link *dai_link;
 549        int num_links;
 550
 551        struct snd_soc_device *socdev;
 552
 553        struct snd_soc_codec *codec;
 554
 555        struct snd_soc_platform *platform;
 556        struct delayed_work delayed_work;
 557        struct work_struct deferred_resume_work;
 558};
 559
 560/* SoC Device - the audio subsystem */
 561struct snd_soc_device {
 562        struct device *dev;
 563        struct snd_soc_card *card;
 564        struct snd_soc_codec_device *codec_dev;
 565        void *codec_data;
 566};
 567
 568/* runtime channel data */
 569struct snd_soc_pcm_runtime {
 570        struct snd_soc_dai_link *dai;
 571        struct snd_soc_device *socdev;
 572};
 573
 574/* mixer control */
 575struct soc_mixer_control {
 576        int min, max, platform_max;
 577        unsigned int reg, rreg, shift, rshift, invert;
 578};
 579
 580/* enumerated kcontrol */
 581struct soc_enum {
 582        unsigned short reg;
 583        unsigned short reg2;
 584        unsigned char shift_l;
 585        unsigned char shift_r;
 586        unsigned int max;
 587        unsigned int mask;
 588        const char **texts;
 589        const unsigned int *values;
 590        void *dapm;
 591};
 592
 593/* codec IO */
 594static inline unsigned int snd_soc_read(struct snd_soc_codec *codec,
 595                                        unsigned int reg)
 596{
 597        return codec->read(codec, reg);
 598}
 599
 600static inline unsigned int snd_soc_write(struct snd_soc_codec *codec,
 601                                         unsigned int reg, unsigned int val)
 602{
 603        return codec->write(codec, reg, val);
 604}
 605
 606static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
 607                                             void *data)
 608{
 609        codec->drvdata = data;
 610}
 611
 612static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
 613{
 614        return codec->drvdata;
 615}
 616
 617#include <sound/soc-dai.h>
 618
 619#endif
 620
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