soc.h

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/*
 * linux/sound/soc.h -- ALSA SoC Layer
 *
 * Author:      Liam Girdwood
 * Created:     Aug 11th 2005
 * Copyright:   Wolfson Microelectronics. PLC.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef __LINUX_SND_SOC_H
#define __LINUX_SND_SOC_H

#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/notifier.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/regmap.h>
#include <linux/log2.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/compress_driver.h>
#include <sound/control.h>
#include <sound/ac97_codec.h>

/*
 * Convenience kcontrol builders
 */
#define SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, xmax, xinvert) \
    ((unsigned long)&(struct soc_mixer_control) \
    {.reg = xreg, .rreg = xreg, .shift = shift_left, \
    .rshift = shift_right, .max = xmax, .platform_max = xmax, \
    .invert = xinvert})
#define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
    SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert)
#define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
    ((unsigned long)&(struct soc_mixer_control) \
    {.reg = xreg, .max = xmax, .platform_max = xmax, .invert = xinvert})
#define SOC_DOUBLE_R_VALUE(xlreg, xrreg, xshift, xmax, xinvert) \
    ((unsigned long)&(struct soc_mixer_control) \
    {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
    .max = xmax, .platform_max = xmax, .invert = xinvert})
#define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
    ((unsigned long)&(struct soc_mixer_control) \
    {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
    .min = xmin, .max = xmax, .platform_max = xmax, .invert = xinvert})
#define SOC_SINGLE(xname, reg, shift, max, invert) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
    .put = snd_soc_put_volsw, \
    .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
#define SOC_SINGLE_RANGE(xname, xreg, xshift, xmin, xmax, xinvert) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .info = snd_soc_info_volsw_range, .get = snd_soc_get_volsw_range, \
    .put = snd_soc_put_volsw_range, \
    .private_value = (unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .shift = xshift, .min = xmin,\
         .max = xmax, .platform_max = xmax, .invert = xinvert} }
#define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
    .put = snd_soc_put_volsw, \
    .private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
#define SOC_SINGLE_SX_TLV(xname, xreg, xshift, xmin, xmax, tlv_array) \
{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
    SNDRV_CTL_ELEM_ACCESS_READWRITE, \
    .tlv.p  = (tlv_array),\
    .info = snd_soc_info_volsw, \
    .get = snd_soc_get_volsw_sx,\
    .put = snd_soc_put_volsw_sx, \
    .private_value = (unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .rreg = xreg, \
        .shift = xshift, .rshift = xshift, \
        .max = xmax, .min = xmin} }
#define SOC_SINGLE_RANGE_TLV(xname, xreg, xshift, xmin, xmax, xinvert, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw_range, \
    .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
    .private_value = (unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .shift = xshift, .min = xmin,\
         .max = xmax, .platform_max = xmax, .invert = xinvert} }
#define SOC_DOUBLE(xname, reg, shift_left, shift_right, max, invert) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
    .put = snd_soc_put_volsw, \
    .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
                      max, invert) }
#define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .info = snd_soc_info_volsw, \
    .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
    .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
                        xmax, xinvert) }
#define SOC_DOUBLE_R_RANGE(xname, reg_left, reg_right, xshift, xmin, \
               xmax, xinvert)       \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .info = snd_soc_info_volsw_range, \
    .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
    .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
                        xshift, xmin, xmax, xinvert) }
#define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, .get = snd_soc_get_volsw, \
    .put = snd_soc_put_volsw, \
    .private_value = SOC_DOUBLE_VALUE(reg, shift_left, shift_right, \
                      max, invert) }
#define SOC_DOUBLE_R_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, \
    .get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
    .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
                        xmax, xinvert) }
#define SOC_DOUBLE_R_RANGE_TLV(xname, reg_left, reg_right, xshift, xmin, \
                   xmax, xinvert, tlv_array)        \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw_range, \
    .get = snd_soc_get_volsw_range, .put = snd_soc_put_volsw_range, \
    .private_value = SOC_DOUBLE_R_RANGE_VALUE(reg_left, reg_right, \
                        xshift, xmin, xmax, xinvert) }
#define SOC_DOUBLE_R_SX_TLV(xname, xreg, xrreg, xshift, xmin, xmax, tlv_array) \
{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
    SNDRV_CTL_ELEM_ACCESS_READWRITE, \
    .tlv.p  = (tlv_array), \
    .info = snd_soc_info_volsw, \
    .get = snd_soc_get_volsw_sx, \
    .put = snd_soc_put_volsw_sx, \
    .private_value = (unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .rreg = xrreg, \
        .shift = xshift, .rshift = xshift, \
        .max = xmax, .min = xmin} }
#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
{   .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
          SNDRV_CTL_ELEM_ACCESS_READWRITE, \
    .tlv.p  = (tlv_array), \
    .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
    .put    = snd_soc_put_volsw_s8, \
    .private_value = (unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .min = xmin, .max = xmax, \
         .platform_max = xmax} }
#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmax, xtexts) \
{   .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
    .max = xmax, .texts = xtexts, \
    .mask = xmax ? roundup_pow_of_two(xmax) - 1 : 0}
#define SOC_ENUM_SINGLE(xreg, xshift, xmax, xtexts) \
    SOC_ENUM_DOUBLE(xreg, xshift, xshift, xmax, xtexts)
#define SOC_ENUM_SINGLE_EXT(xmax, xtexts) \
{   .max = xmax, .texts = xtexts }
#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xmax, xtexts, xvalues) \
{   .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
    .mask = xmask, .max = xmax, .texts = xtexts, .values = xvalues}
#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xmax, xtexts, xvalues) \
    SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xmax, xtexts, xvalues)
#define SOC_ENUM(xname, xenum) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
    .info = snd_soc_info_enum_double, \
    .get = snd_soc_get_enum_double, .put = snd_soc_put_enum_double, \
    .private_value = (unsigned long)&xenum }
#define SOC_VALUE_ENUM(xname, xenum) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
    .info = snd_soc_info_enum_double, \
    .get = snd_soc_get_value_enum_double, \
    .put = snd_soc_put_value_enum_double, \
    .private_value = (unsigned long)&xenum }
#define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
     xhandler_get, xhandler_put) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .info = snd_soc_info_volsw, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
#define SOC_DOUBLE_EXT(xname, reg, shift_left, shift_right, max, invert,\
     xhandler_get, xhandler_put) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
    .info = snd_soc_info_volsw, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = \
        SOC_DOUBLE_VALUE(reg, shift_left, shift_right, max, invert) }
#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
     xhandler_get, xhandler_put, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
         SNDRV_CTL_ELEM_ACCESS_READWRITE,\
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
#define SOC_DOUBLE_EXT_TLV(xname, xreg, shift_left, shift_right, xmax, xinvert,\
     xhandler_get, xhandler_put, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = SOC_DOUBLE_VALUE(xreg, shift_left, shift_right, \
                      xmax, xinvert) }
#define SOC_DOUBLE_R_EXT_TLV(xname, reg_left, reg_right, xshift, xmax, xinvert,\
     xhandler_get, xhandler_put, tlv_array) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
         SNDRV_CTL_ELEM_ACCESS_READWRITE, \
    .tlv.p = (tlv_array), \
    .info = snd_soc_info_volsw, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
                        xmax, xinvert) }
#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .info = snd_soc_info_bool_ext, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = xdata }
#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
    .info = snd_soc_info_enum_ext, \
    .get = xhandler_get, .put = xhandler_put, \
    .private_value = (unsigned long)&xenum }

#define SND_SOC_BYTES(xname, xbase, xregs)            \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
    .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
    .put = snd_soc_bytes_put, .private_value =        \
        ((unsigned long)&(struct soc_bytes)           \
        {.base = xbase, .num_regs = xregs }) }

#define SND_SOC_BYTES_MASK(xname, xbase, xregs, xmask)        \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,   \
    .info = snd_soc_bytes_info, .get = snd_soc_bytes_get, \
    .put = snd_soc_bytes_put, .private_value =        \
        ((unsigned long)&(struct soc_bytes)           \
        {.base = xbase, .num_regs = xregs,        \
         .mask = xmask }) }

#define SOC_SINGLE_XR_SX(xname, xregbase, xregcount, xnbits, \
        xmin, xmax, xinvert) \
{   .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
    .info = snd_soc_info_xr_sx, .get = snd_soc_get_xr_sx, \
    .put = snd_soc_put_xr_sx, \
    .private_value = (unsigned long)&(struct soc_mreg_control) \
        {.regbase = xregbase, .regcount = xregcount, .nbits = xnbits, \
        .invert = xinvert, .min = xmin, .max = xmax} }

#define SOC_SINGLE_STROBE(xname, xreg, xshift, xinvert) \
    SOC_SINGLE_EXT(xname, xreg, xshift, 1, xinvert, \
        snd_soc_get_strobe, snd_soc_put_strobe)

/*
 * Simplified versions of above macros, declaring a struct and calculating
 * ARRAY_SIZE internally
 */
#define SOC_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xtexts) \
    struct soc_enum name = SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, \
                        ARRAY_SIZE(xtexts), xtexts)
#define SOC_ENUM_SINGLE_DECL(name, xreg, xshift, xtexts) \
    SOC_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xtexts)
#define SOC_ENUM_SINGLE_EXT_DECL(name, xtexts) \
    struct soc_enum name = SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(xtexts), xtexts)
#define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
    struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
                            ARRAY_SIZE(xtexts), xtexts, xvalues)
#define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
    SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)

/*
 * Component probe and remove ordering levels for components with runtime
 * dependencies.
 */
#define SND_SOC_COMP_ORDER_FIRST        -2
#define SND_SOC_COMP_ORDER_EARLY        -1
#define SND_SOC_COMP_ORDER_NORMAL       0
#define SND_SOC_COMP_ORDER_LATE     1
#define SND_SOC_COMP_ORDER_LAST     2

/*
 * Bias levels
 *
 * @ON:      Bias is fully on for audio playback and capture operations.
 * @PREPARE: Prepare for audio operations. Called before DAPM switching for
 *           stream start and stop operations.
 * @STANDBY: Low power standby state when no playback/capture operations are
 *           in progress. NOTE: The transition time between STANDBY and ON
 *           should be as fast as possible and no longer than 10ms.
 * @OFF:     Power Off. No restrictions on transition times.
 */
enum snd_soc_bias_level {
    SND_SOC_BIAS_OFF = 0,
    SND_SOC_BIAS_STANDBY = 1,
    SND_SOC_BIAS_PREPARE = 2,
    SND_SOC_BIAS_ON = 3,
};

struct device_node;
struct snd_jack;
struct snd_soc_card;
struct snd_soc_pcm_stream;
struct snd_soc_ops;
struct snd_soc_pcm_runtime;
struct snd_soc_dai;
struct snd_soc_dai_driver;
struct snd_soc_platform;
struct snd_soc_dai_link;
struct snd_soc_platform_driver;
struct snd_soc_codec;
struct snd_soc_codec_driver;
struct soc_enum;
struct snd_soc_jack;
struct snd_soc_jack_zone;
struct snd_soc_jack_pin;
struct snd_soc_cache_ops;
#include <sound/soc-dapm.h>
#include <sound/soc-dpcm.h>

#ifdef CONFIG_GPIOLIB
struct snd_soc_jack_gpio;
#endif

typedef int (*hw_write_t)(void *,const char* ,int);

extern struct snd_ac97_bus_ops soc_ac97_ops;

enum snd_soc_control_type {
    SND_SOC_I2C = 1,
    SND_SOC_SPI,
    SND_SOC_REGMAP,
};

enum snd_soc_compress_type {
    SND_SOC_FLAT_COMPRESSION = 1,
};

enum snd_soc_pcm_subclass {
    SND_SOC_PCM_CLASS_PCM   = 0,
    SND_SOC_PCM_CLASS_BE    = 1,
};

enum snd_soc_card_subclass {
    SND_SOC_CARD_CLASS_INIT     = 0,
    SND_SOC_CARD_CLASS_RUNTIME  = 1,
};

int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
                 int source, unsigned int freq, int dir);
int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
              unsigned int freq_in, unsigned int freq_out);

int snd_soc_register_card(struct snd_soc_card *card);
int snd_soc_unregister_card(struct snd_soc_card *card);
int snd_soc_suspend(struct device *dev);
int snd_soc_resume(struct device *dev);
int snd_soc_poweroff(struct device *dev);
int snd_soc_register_platform(struct device *dev,
        struct snd_soc_platform_driver *platform_drv);
void snd_soc_unregister_platform(struct device *dev);
int snd_soc_register_codec(struct device *dev,
        const struct snd_soc_codec_driver *codec_drv,
        struct snd_soc_dai_driver *dai_drv, int num_dai);
void snd_soc_unregister_codec(struct device *dev);
int snd_soc_codec_volatile_register(struct snd_soc_codec *codec,
                    unsigned int reg);
int snd_soc_codec_readable_register(struct snd_soc_codec *codec,
                    unsigned int reg);
int snd_soc_codec_writable_register(struct snd_soc_codec *codec,
                    unsigned int reg);
int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
                   int addr_bits, int data_bits,
                   enum snd_soc_control_type control);
int snd_soc_cache_sync(struct snd_soc_codec *codec);
int snd_soc_cache_init(struct snd_soc_codec *codec);
int snd_soc_cache_exit(struct snd_soc_codec *codec);
int snd_soc_cache_write(struct snd_soc_codec *codec,
            unsigned int reg, unsigned int value);
int snd_soc_cache_read(struct snd_soc_codec *codec,
               unsigned int reg, unsigned int *value);
int snd_soc_default_volatile_register(struct snd_soc_codec *codec,
                      unsigned int reg);
int snd_soc_default_readable_register(struct snd_soc_codec *codec,
                      unsigned int reg);
int snd_soc_default_writable_register(struct snd_soc_codec *codec,
                      unsigned int reg);
int snd_soc_platform_read(struct snd_soc_platform *platform,
                    unsigned int reg);
int snd_soc_platform_write(struct snd_soc_platform *platform,
                    unsigned int reg, unsigned int val);
int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num);
int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num);

struct snd_pcm_substream *snd_soc_get_dai_substream(struct snd_soc_card *card,
        const char *dai_link, int stream);
struct snd_soc_pcm_runtime *snd_soc_get_pcm_runtime(struct snd_soc_card *card,
        const char *dai_link);

/* Utility functions to get clock rates from various things */
int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);

/* set runtime hw params */
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
    const struct snd_pcm_hardware *hw);

int snd_soc_platform_trigger(struct snd_pcm_substream *substream,
        int cmd, struct snd_soc_platform *platform);

/* Jack reporting */
int snd_soc_jack_new(struct snd_soc_codec *codec, const char *id, int type,
             struct snd_soc_jack *jack);
void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask);
int snd_soc_jack_add_pins(struct snd_soc_jack *jack, int count,
              struct snd_soc_jack_pin *pins);
void snd_soc_jack_notifier_register(struct snd_soc_jack *jack,
                    struct notifier_block *nb);
void snd_soc_jack_notifier_unregister(struct snd_soc_jack *jack,
                      struct notifier_block *nb);
int snd_soc_jack_add_zones(struct snd_soc_jack *jack, int count,
              struct snd_soc_jack_zone *zones);
int snd_soc_jack_get_type(struct snd_soc_jack *jack, int micbias_voltage);
#ifdef CONFIG_GPIOLIB
int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
            struct snd_soc_jack_gpio *gpios);
void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
            struct snd_soc_jack_gpio *gpios);
#endif

/* codec register bit access */
int snd_soc_update_bits(struct snd_soc_codec *codec, unsigned short reg,
                unsigned int mask, unsigned int value);
int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
                   unsigned short reg, unsigned int mask,
                   unsigned int value);
int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
                unsigned int mask, unsigned int value);

int snd_soc_new_ac97_codec(struct snd_soc_codec *codec,
    struct snd_ac97_bus_ops *ops, int num);
void snd_soc_free_ac97_codec(struct snd_soc_codec *codec);

/*
 *Controls
 */
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
                  void *data, const char *long_name,
                  const char *prefix);
int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
    const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
    const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_add_card_controls(struct snd_soc_card *soc_card,
    const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_add_dai_controls(struct snd_soc_dai *dai,
    const struct snd_kcontrol_new *controls, int num_controls);
int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_get_value_enum_double(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
#define snd_soc_info_bool_ext       snd_ctl_boolean_mono_info
int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
#define snd_soc_get_volsw_2r snd_soc_get_volsw
#define snd_soc_put_volsw_2r snd_soc_put_volsw
int snd_soc_get_volsw_sx(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_info_volsw_range(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_limit_volume(struct snd_soc_codec *codec,
    const char *name, int max);
int snd_soc_bytes_info(struct snd_kcontrol *kcontrol,
               struct snd_ctl_elem_info *uinfo);
int snd_soc_bytes_get(struct snd_kcontrol *kcontrol,
              struct snd_ctl_elem_value *ucontrol);
int snd_soc_bytes_put(struct snd_kcontrol *kcontrol,
              struct snd_ctl_elem_value *ucontrol);
int snd_soc_info_xr_sx(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_info *uinfo);
int snd_soc_get_xr_sx(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_xr_sx(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_get_strobe(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_strobe(struct snd_kcontrol *kcontrol,
    struct snd_ctl_elem_value *ucontrol);

struct snd_soc_reg_access {
    u16 reg;
    u16 read;
    u16 write;
    u16 vol;
};

struct snd_soc_jack_pin {
    struct list_head list;
    const char *pin;
    int mask;
    bool invert;
};

struct snd_soc_jack_zone {
    unsigned int min_mv;
    unsigned int max_mv;
    unsigned int jack_type;
    unsigned int debounce_time;
    struct list_head list;
};

#ifdef CONFIG_GPIOLIB
struct snd_soc_jack_gpio {
    unsigned int gpio;
    const char *name;
    int report;
    int invert;
    int debounce_time;
    bool wake;

    struct snd_soc_jack *jack;
    struct delayed_work work;

    int (*jack_status_check)(void);
};
#endif

struct snd_soc_jack {
    struct mutex mutex;
    struct snd_jack *jack;
    struct snd_soc_codec *codec;
    struct list_head pins;
    int status;
    struct blocking_notifier_head notifier;
    struct list_head jack_zones;
};

/* SoC PCM stream information */
struct snd_soc_pcm_stream {
    const char *stream_name;
    u64 formats;            /* SNDRV_PCM_FMTBIT_* */
    unsigned int rates;     /* SNDRV_PCM_RATE_* */
    unsigned int rate_min;      /* min rate */
    unsigned int rate_max;      /* max rate */
    unsigned int channels_min;  /* min channels */
    unsigned int channels_max;  /* max channels */
    unsigned int sig_bits;      /* number of bits of content */
};

/* SoC audio ops */
struct snd_soc_ops {
    int (*startup)(struct snd_pcm_substream *);
    void (*shutdown)(struct snd_pcm_substream *);
    int (*hw_params)(struct snd_pcm_substream *, struct snd_pcm_hw_params *);
    int (*hw_free)(struct snd_pcm_substream *);
    int (*prepare)(struct snd_pcm_substream *);
    int (*trigger)(struct snd_pcm_substream *, int);
};

struct snd_soc_compr_ops {
    int (*startup)(struct snd_compr_stream *);
    void (*shutdown)(struct snd_compr_stream *);
    int (*set_params)(struct snd_compr_stream *);
    int (*trigger)(struct snd_compr_stream *);
};

/* SoC cache ops */
struct snd_soc_cache_ops {
    const char *name;
    enum snd_soc_compress_type id;
    int (*init)(struct snd_soc_codec *codec);
    int (*exit)(struct snd_soc_codec *codec);
    int (*read)(struct snd_soc_codec *codec, unsigned int reg,
        unsigned int *value);
    int (*write)(struct snd_soc_codec *codec, unsigned int reg,
        unsigned int value);
    int (*sync)(struct snd_soc_codec *codec);
};

/* SoC Audio Codec device */
struct snd_soc_codec {
    const char *name;
    const char *name_prefix;
    int id;
    struct device *dev;
    const struct snd_soc_codec_driver *driver;

    struct mutex mutex;
    struct snd_soc_card *card;
    struct list_head list;
    struct list_head card_list;
    int num_dai;
    enum snd_soc_compress_type compress_type;
    size_t reg_size;    /* reg_cache_size * reg_word_size */
    int (*volatile_register)(struct snd_soc_codec *, unsigned int);
    int (*readable_register)(struct snd_soc_codec *, unsigned int);
    int (*writable_register)(struct snd_soc_codec *, unsigned int);

    /* runtime */
    struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
    unsigned int active;
    unsigned int cache_bypass:1; /* Suppress access to the cache */
    unsigned int suspended:1; /* Codec is in suspend PM state */
    unsigned int probed:1; /* Codec has been probed */
    unsigned int ac97_registered:1; /* Codec has been AC97 registered */
    unsigned int ac97_created:1; /* Codec has been created by SoC */
    unsigned int sysfs_registered:1; /* codec has been sysfs registered */
    unsigned int cache_init:1; /* codec cache has been initialized */
    unsigned int using_regmap:1; /* using regmap access */
    u32 cache_only;  /* Suppress writes to hardware */
    u32 cache_sync; /* Cache needs to be synced to hardware */

    /* codec IO */
    void *control_data; /* codec control (i2c/3wire) data */
    enum snd_soc_control_type control_type;
    hw_write_t hw_write;
    unsigned int (*hw_read)(struct snd_soc_codec *, unsigned int);
    unsigned int (*read)(struct snd_soc_codec *, unsigned int);
    int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
    int (*bulk_write_raw)(struct snd_soc_codec *, unsigned int, const void *, size_t);
    void *reg_cache;
    const void *reg_def_copy;
    const struct snd_soc_cache_ops *cache_ops;
    struct mutex cache_rw_mutex;
    int val_bytes;

    /* dapm */
    struct snd_soc_dapm_context dapm;
    unsigned int ignore_pmdown_time:1; /* pmdown_time is ignored at stop */

#ifdef CONFIG_DEBUG_FS
    struct dentry *debugfs_codec_root;
    struct dentry *debugfs_reg;
    struct dentry *debugfs_dapm;
#endif
};

/* codec driver */
struct snd_soc_codec_driver {

    /* driver ops */
    int (*probe)(struct snd_soc_codec *);
    int (*remove)(struct snd_soc_codec *);
    int (*suspend)(struct snd_soc_codec *);
    int (*resume)(struct snd_soc_codec *);

    /* Default control and setup, added after probe() is run */
    const struct snd_kcontrol_new *controls;
    int num_controls;
    const struct snd_soc_dapm_widget *dapm_widgets;
    int num_dapm_widgets;
    const struct snd_soc_dapm_route *dapm_routes;
    int num_dapm_routes;

    /* codec wide operations */
    int (*set_sysclk)(struct snd_soc_codec *codec,
              int clk_id, int source, unsigned int freq, int dir);
    int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source,
        unsigned int freq_in, unsigned int freq_out);

    /* codec IO */
    unsigned int (*read)(struct snd_soc_codec *, unsigned int);
    int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
    int (*display_register)(struct snd_soc_codec *, char *,
                size_t, unsigned int);
    int (*volatile_register)(struct snd_soc_codec *, unsigned int);
    int (*readable_register)(struct snd_soc_codec *, unsigned int);
    int (*writable_register)(struct snd_soc_codec *, unsigned int);
    unsigned int reg_cache_size;
    short reg_cache_step;
    short reg_word_size;
    const void *reg_cache_default;
    short reg_access_size;
    const struct snd_soc_reg_access *reg_access_default;
    enum snd_soc_compress_type compress_type;

    /* codec bias level */
    int (*set_bias_level)(struct snd_soc_codec *,
                  enum snd_soc_bias_level level);
    bool idle_bias_off;

    void (*seq_notifier)(struct snd_soc_dapm_context *,
                 enum snd_soc_dapm_type, int);

    /* codec stream completion event */
    int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);

    bool ignore_pmdown_time;  /* Doesn't benefit from pmdown delay */

    /* probe ordering - for components with runtime dependencies */
    int probe_order;
    int remove_order;
};

/* SoC platform interface */
struct snd_soc_platform_driver {

    int (*probe)(struct snd_soc_platform *);
    int (*remove)(struct snd_soc_platform *);
    int (*suspend)(struct snd_soc_dai *dai);
    int (*resume)(struct snd_soc_dai *dai);

    /* pcm creation and destruction */
    int (*pcm_new)(struct snd_soc_pcm_runtime *);
    void (*pcm_free)(struct snd_pcm *);

    /* Default control and setup, added after probe() is run */
    const struct snd_kcontrol_new *controls;
    int num_controls;
    const struct snd_soc_dapm_widget *dapm_widgets;
    int num_dapm_widgets;
    const struct snd_soc_dapm_route *dapm_routes;
    int num_dapm_routes;

    /*
     * For platform caused delay reporting.
     * Optional.
     */
    snd_pcm_sframes_t (*delay)(struct snd_pcm_substream *,
        struct snd_soc_dai *);

    /* platform stream pcm ops */
    struct snd_pcm_ops *ops;

    /* platform stream compress ops */
    struct snd_compr_ops *compr_ops;

    /* platform stream completion event */
    int (*stream_event)(struct snd_soc_dapm_context *dapm, int event);

    /* probe ordering - for components with runtime dependencies */
    int probe_order;
    int remove_order;

    /* platform IO - used for platform DAPM */
    unsigned int (*read)(struct snd_soc_platform *, unsigned int);
    int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
    int (*bespoke_trigger)(struct snd_pcm_substream *, int);
};

struct snd_soc_platform {
    const char *name;
    int id;
    struct device *dev;
    struct snd_soc_platform_driver *driver;
    struct mutex mutex;

    unsigned int suspended:1; /* platform is suspended */
    unsigned int probed:1;

    struct snd_soc_card *card;
    struct list_head list;
    struct list_head card_list;

    struct snd_soc_dapm_context dapm;

#ifdef CONFIG_DEBUG_FS
    struct dentry *debugfs_platform_root;
    struct dentry *debugfs_dapm;
#endif
};

struct snd_soc_dai_link {
    /* config - must be set by machine driver */
    const char *name;           /* Codec name */
    const char *stream_name;        /* Stream name */
    /*
     * You MAY specify the link's CPU-side device, either by device name,
     * or by DT/OF node, but not both. If this information is omitted,
     * the CPU-side DAI is matched using .cpu_dai_name only, which hence
     * must be globally unique. These fields are currently typically used
     * only for codec to codec links, or systems using device tree.
     */
    const char *cpu_name;
    const struct device_node *cpu_of_node;
    /*
     * You MAY specify the DAI name of the CPU DAI. If this information is
     * omitted, the CPU-side DAI is matched using .cpu_name/.cpu_of_node
     * only, which only works well when that device exposes a single DAI.
     */
    const char *cpu_dai_name;
    /*
     * You MUST specify the link's codec, either by device name, or by
     * DT/OF node, but not both.
     */
    const char *codec_name;
    const struct device_node *codec_of_node;
    /* You MUST specify the DAI name within the codec */
    const char *codec_dai_name;
    /*
     * You MAY specify the link's platform/PCM/DMA driver, either by
     * device name, or by DT/OF node, but not both. Some forms of link
     * do not need a platform.
     */
    const char *platform_name;
    const struct device_node *platform_of_node;
    int be_id;  /* optional ID for machine driver BE identification */

    const struct snd_soc_pcm_stream *params;

    unsigned int dai_fmt;           /* format to set on init */

    enum snd_soc_dpcm_trigger trigger[2]; /* trigger type for DPCM */

    /* Keep DAI active over suspend */
    unsigned int ignore_suspend:1;

    /* Symmetry requirements */
    unsigned int symmetric_rates:1;

    /* Do not create a PCM for this DAI link (Backend link) */
    unsigned int no_pcm:1;

    /* This DAI link can route to other DAI links at runtime (Frontend)*/
    unsigned int dynamic:1;

    /* pmdown_time is ignored at stop */
    unsigned int ignore_pmdown_time:1;

    /* codec/machine specific init - e.g. add machine controls */
    int (*init)(struct snd_soc_pcm_runtime *rtd);

    /* optional hw_params re-writing for BE and FE sync */
    int (*be_hw_params_fixup)(struct snd_soc_pcm_runtime *rtd,
            struct snd_pcm_hw_params *params);

    /* machine stream operations */
    struct snd_soc_ops *ops;
    struct snd_soc_compr_ops *compr_ops;
};

struct snd_soc_codec_conf {
    const char *dev_name;

    /*
     * optional map of kcontrol, widget and path name prefixes that are
     * associated per device
     */
    const char *name_prefix;

    /*
     * set this to the desired compression type if you want to
     * override the one supplied in codec->driver->compress_type
     */
    enum snd_soc_compress_type compress_type;
};

struct snd_soc_aux_dev {
    const char *name;       /* Codec name */
    const char *codec_name;     /* for multi-codec */

    /* codec/machine specific init - e.g. add machine controls */
    int (*init)(struct snd_soc_dapm_context *dapm);
};

/* SoC card */
struct snd_soc_card {
    const char *name;
    const char *long_name;
    const char *driver_name;
    struct device *dev;
    struct snd_card *snd_card;
    struct module *owner;

    struct list_head list;
    struct mutex mutex;
    struct mutex dapm_mutex;

    bool instantiated;

    int (*probe)(struct snd_soc_card *card);
    int (*late_probe)(struct snd_soc_card *card);
    int (*remove)(struct snd_soc_card *card);

    /* the pre and post PM functions are used to do any PM work before and
     * after the codec and DAI's do any PM work. */
    int (*suspend_pre)(struct snd_soc_card *card);
    int (*suspend_post)(struct snd_soc_card *card);
    int (*resume_pre)(struct snd_soc_card *card);
    int (*resume_post)(struct snd_soc_card *card);

    /* callbacks */
    int (*set_bias_level)(struct snd_soc_card *,
                  struct snd_soc_dapm_context *dapm,
                  enum snd_soc_bias_level level);
    int (*set_bias_level_post)(struct snd_soc_card *,
                   struct snd_soc_dapm_context *dapm,
                   enum snd_soc_bias_level level);

    long pmdown_time;

    /* CPU <--> Codec DAI links  */
    struct snd_soc_dai_link *dai_link;
    int num_links;
    struct snd_soc_pcm_runtime *rtd;
    int num_rtd;

    /* optional codec specific configuration */
    struct snd_soc_codec_conf *codec_conf;
    int num_configs;

    /*
     * optional auxiliary devices such as amplifiers or codecs with DAI
     * link unused
     */
    struct snd_soc_aux_dev *aux_dev;
    int num_aux_devs;
    struct snd_soc_pcm_runtime *rtd_aux;
    int num_aux_rtd;

    const struct snd_kcontrol_new *controls;
    int num_controls;

    /*
     * Card-specific routes and widgets.
     */
    const struct snd_soc_dapm_widget *dapm_widgets;
    int num_dapm_widgets;
    const struct snd_soc_dapm_route *dapm_routes;
    int num_dapm_routes;
    bool fully_routed;

    struct work_struct deferred_resume_work;

    /* lists of probed devices belonging to this card */
    struct list_head codec_dev_list;
    struct list_head platform_dev_list;
    struct list_head dai_dev_list;

    struct list_head widgets;
    struct list_head paths;
    struct list_head dapm_list;
    struct list_head dapm_dirty;

    /* Generic DAPM context for the card */
    struct snd_soc_dapm_context dapm;
    struct snd_soc_dapm_stats dapm_stats;

#ifdef CONFIG_DEBUG_FS
    struct dentry *debugfs_card_root;
    struct dentry *debugfs_pop_time;
#endif
    u32 pop_time;

    void *drvdata;
};

/* SoC machine DAI configuration, glues a codec and cpu DAI together */
struct snd_soc_pcm_runtime {
    struct device *dev;
    struct snd_soc_card *card;
    struct snd_soc_dai_link *dai_link;
    struct mutex pcm_mutex;
    enum snd_soc_pcm_subclass pcm_subclass;
    struct snd_pcm_ops ops;

    unsigned int dev_registered:1;

    /* Dynamic PCM BE runtime data */
    struct snd_soc_dpcm_runtime dpcm[2];

    long pmdown_time;

    /* runtime devices */
    struct snd_pcm *pcm;
    struct snd_compr *compr;
    struct snd_soc_codec *codec;
    struct snd_soc_platform *platform;
    struct snd_soc_dai *codec_dai;
    struct snd_soc_dai *cpu_dai;

    struct delayed_work delayed_work;
#ifdef CONFIG_DEBUG_FS
    struct dentry *debugfs_dpcm_root;
    struct dentry *debugfs_dpcm_state;
#endif
};

/* mixer control */
struct soc_mixer_control {
    int min, max, platform_max;
    unsigned int reg, rreg, shift, rshift, invert;
};

struct soc_bytes {
    int base;
    int num_regs;
    u32 mask;
};

/* multi register control */
struct soc_mreg_control {
    long min, max;
    unsigned int regbase, regcount, nbits, invert;
};

/* enumerated kcontrol */
struct soc_enum {
    unsigned short reg;
    unsigned short reg2;
    unsigned char shift_l;
    unsigned char shift_r;
    unsigned int max;
    unsigned int mask;
    const char * const *texts;
    const unsigned int *values;
    void *dapm;
};

/* codec IO */
unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
unsigned int snd_soc_write(struct snd_soc_codec *codec,
               unsigned int reg, unsigned int val);
unsigned int snd_soc_bulk_write_raw(struct snd_soc_codec *codec,
                    unsigned int reg, const void *data, size_t len);

/* device driver data */

static inline void snd_soc_card_set_drvdata(struct snd_soc_card *card,
        void *data)
{
    card->drvdata = data;
}

static inline void *snd_soc_card_get_drvdata(struct snd_soc_card *card)
{
    return card->drvdata;
}

static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
        void *data)
{
    dev_set_drvdata(codec->dev, data);
}

static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
{
    return dev_get_drvdata(codec->dev);
}

static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
        void *data)
{
    dev_set_drvdata(platform->dev, data);
}

static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
{
    return dev_get_drvdata(platform->dev);
}

static inline void snd_soc_pcm_set_drvdata(struct snd_soc_pcm_runtime *rtd,
        void *data)
{
    dev_set_drvdata(rtd->dev, data);
}

static inline void *snd_soc_pcm_get_drvdata(struct snd_soc_pcm_runtime *rtd)
{
    return dev_get_drvdata(rtd->dev);
}

static inline void snd_soc_initialize_card_lists(struct snd_soc_card *card)
{
    INIT_LIST_HEAD(&card->dai_dev_list);
    INIT_LIST_HEAD(&card->codec_dev_list);
    INIT_LIST_HEAD(&card->platform_dev_list);
    INIT_LIST_HEAD(&card->widgets);
    INIT_LIST_HEAD(&card->paths);
    INIT_LIST_HEAD(&card->dapm_list);
}

static inline bool snd_soc_volsw_is_stereo(struct soc_mixer_control *mc)
{
    if (mc->reg == mc->rreg && mc->shift == mc->rshift)
        return 0;
    /*
     * mc->reg == mc->rreg && mc->shift != mc->rshift, or
     * mc->reg != mc->rreg means that the control is
     * stereo (bits in one register or in two registers)
     */
    return 1;
}

int snd_soc_util_init(void);
void snd_soc_util_exit(void);

int snd_soc_of_parse_card_name(struct snd_soc_card *card,
                   const char *propname);
int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
                   const char *propname);

#include <sound/soc-dai.h>

#ifdef CONFIG_DEBUG_FS
extern struct dentry *snd_soc_debugfs_root;
#endif

extern const struct dev_pm_ops snd_soc_pm_ops;

#endif