include/sound/soc.h

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This source file includes following definitions.
snd_soc_jack_add_gpios
snd_soc_jack_add_gpiods
snd_soc_jack_free_gpios
snd_soc_component_to_codec
snd_soc_component_to_platform
snd_soc_dapm_to_component
snd_soc_dapm_to_codec
snd_soc_dapm_to_platform
snd_soc_component_get_dapm
snd_soc_card_set_drvdata
snd_soc_card_get_drvdata
snd_soc_component_set_drvdata
snd_soc_component_get_drvdata
snd_soc_codec_set_drvdata
snd_soc_codec_get_drvdata
snd_soc_platform_set_drvdata
snd_soc_platform_get_drvdata
snd_soc_pcm_set_drvdata
snd_soc_pcm_get_drvdata
snd_soc_initialize_card_lists
snd_soc_volsw_is_stereo
snd_soc_enum_val_to_item
snd_soc_enum_item_to_val
snd_soc_component_is_active
snd_soc_codec_is_active
snd_soc_kcontrol_component
snd_soc_kcontrol_codec
snd_soc_kcontrol_platform
snd_soc_dapm_mutex_lock
snd_soc_dapm_mutex_unlock
/*
 * 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/of.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, xautodisable) \
        ((unsigned long)&(struct soc_mixer_control) \
        {.reg = xreg, .rreg = xreg, .shift = shift_left, \
        .rshift = shift_right, .max = xmax, .platform_max = xmax, \
        .invert = xinvert, .autodisable = xautodisable})
#define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert, xautodisable) \
        SOC_DOUBLE_VALUE(xreg, xshift, xshift, xmax, xinvert, xautodisable)
#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_S_VALUE(xlreg, xrreg, xshift, xmin, xmax, xsign_bit, xinvert) \
        ((unsigned long)&(struct soc_mixer_control) \
        {.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
        .max = xmax, .min = xmin, .platform_max = xmax, .sign_bit = xsign_bit, \
        .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, 0) }
#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, .rreg = xreg, .shift = xshift, \
                 .rshift = 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, 0) }
#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, .rreg = xreg, .shift = xshift, \
                 .rshift = 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, 0) }
#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, 0) }
#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_R_S_TLV(xname, reg_left, reg_right, xshift, xmin, xmax, xsign_bit, 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_S_VALUE(reg_left, reg_right, xshift, \
                                            xmin, xmax, xsign_bit, xinvert) }
#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, xitems, xtexts) \
{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
        .items = xitems, .texts = xtexts, \
        .mask = xitems ? roundup_pow_of_two(xitems) - 1 : 0}
#define SOC_ENUM_SINGLE(xreg, xshift, xitems, xtexts) \
        SOC_ENUM_DOUBLE(xreg, xshift, xshift, xitems, xtexts)
#define SOC_ENUM_SINGLE_EXT(xitems, xtexts) \
{       .items = xitems, .texts = xtexts }
#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xitems, xtexts, xvalues) \
{       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
        .mask = xmask, .items = xitems, .texts = xtexts, .values = xvalues}
#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xnitmes, xtexts, xvalues) \
        SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xnitmes, xtexts, xvalues)
#define SOC_ENUM_SINGLE_VIRT(xitems, xtexts) \
        SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, xitems, xtexts)
#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_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, 0) }
#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, 0) }
#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, 0) }
#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, 0) }
#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_double, \
        .get = xhandler_get, .put = xhandler_put, \
        .private_value = (unsigned long)&xenum }
#define SOC_VALUE_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
        SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put)

#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 SND_SOC_BYTES_EXT(xname, xcount, xhandler_get, xhandler_put) \
{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
        .info = snd_soc_bytes_info_ext, \
        .get = xhandler_get, .put = xhandler_put, \
        .private_value = (unsigned long)&(struct soc_bytes_ext) \
                {.max = xcount} }
#define SND_SOC_BYTES_TLV(xname, xcount, xhandler_get, xhandler_put) \
{       .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE | \
                  SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
        .tlv.c = (snd_soc_bytes_tlv_callback), \
        .info = snd_soc_bytes_info_ext, \
        .private_value = (unsigned long)&(struct soc_bytes_ext) \
                {.max = xcount, .get = xhandler_get, .put = xhandler_put, } }
#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) \
        const 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) \
        const 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) \
        const 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)
#define SOC_ENUM_SINGLE_VIRT_DECL(name, xtexts) \
        const struct soc_enum name = SOC_ENUM_SINGLE_VIRT(ARRAY_SIZE(xtexts), xtexts)

/*
 * 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 snd_soc_component;
struct snd_soc_component_driver;
struct soc_enum;
struct snd_soc_jack;
struct snd_soc_jack_zone;
struct snd_soc_jack_pin;
#include <sound/soc-dapm.h>
#include <sound/soc-dpcm.h>

struct snd_soc_jack_gpio;

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

extern struct snd_ac97_bus_ops *soc_ac97_ops;

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 devm_snd_soc_register_card(struct device *dev, 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,
                const struct snd_soc_platform_driver *platform_drv);
int devm_snd_soc_register_platform(struct device *dev,
                const struct snd_soc_platform_driver *platform_drv);
void snd_soc_unregister_platform(struct device *dev);
int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform,
                const struct snd_soc_platform_driver *platform_drv);
void snd_soc_remove_platform(struct snd_soc_platform *platform);
struct snd_soc_platform *snd_soc_lookup_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_register_component(struct device *dev,
                         const struct snd_soc_component_driver *cmpnt_drv,
                         struct snd_soc_dai_driver *dai_drv, int num_dai);
int devm_snd_soc_register_component(struct device *dev,
                         const struct snd_soc_component_driver *cmpnt_drv,
                         struct snd_soc_dai_driver *dai_drv, int num_dai);
void snd_soc_unregister_component(struct device *dev);
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_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);

bool snd_soc_runtime_ignore_pmdown_time(struct snd_soc_pcm_runtime *rtd);
void snd_soc_runtime_activate(struct snd_soc_pcm_runtime *rtd, int stream);
void snd_soc_runtime_deactivate(struct snd_soc_pcm_runtime *rtd, int stream);

/* 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);

int soc_dai_hw_params(struct snd_pcm_substream *substream,
                      struct snd_pcm_hw_params *params,
                      struct snd_soc_dai *dai);

/* 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);
int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
                            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);
#else
static inline int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
                                         struct snd_soc_jack_gpio *gpios)
{
        return 0;
}

static inline int snd_soc_jack_add_gpiods(struct device *gpiod_dev,
                                          struct snd_soc_jack *jack,
                                          int count,
                                          struct snd_soc_jack_gpio *gpios)
{
        return 0;
}

static inline 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 int reg,
                                unsigned int mask, unsigned int value);
int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
                               unsigned int reg, unsigned int mask,
                               unsigned int value);
int snd_soc_test_bits(struct snd_soc_codec *codec, unsigned int 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);

int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops);
int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops,
                struct platform_device *pdev);

/*
 *Controls
 */
struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
                                  void *data, const char *long_name,
                                  const char *prefix);
struct snd_kcontrol *snd_soc_card_get_kcontrol(struct snd_soc_card *soc_card,
                                               const char *name);
int snd_soc_add_component_controls(struct snd_soc_component *component,
        const struct snd_kcontrol_new *controls, unsigned int num_controls);
int snd_soc_add_codec_controls(struct snd_soc_codec *codec,
        const struct snd_kcontrol_new *controls, unsigned int num_controls);
int snd_soc_add_platform_controls(struct snd_soc_platform *platform,
        const struct snd_kcontrol_new *controls, unsigned 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_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_info_volsw(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_bytes_info_ext(struct snd_kcontrol *kcontrol,
        struct snd_ctl_elem_info *ucontrol);
int snd_soc_bytes_tlv_callback(struct snd_kcontrol *kcontrol, int op_flag,
        unsigned int size, unsigned int __user *tlv);
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_jack_pin - Describes a pin to update based on jack detection
 *
 * @pin:    name of the pin to update
 * @mask:   bits to check for in reported jack status
 * @invert: if non-zero then pin is enabled when status is not reported
 */
struct snd_soc_jack_pin {
        struct list_head list;
        const char *pin;
        int mask;
        bool invert;
};

/**
 * struct snd_soc_jack_zone - Describes voltage zones of jack detection
 *
 * @min_mv: start voltage in mv
 * @max_mv: end voltage in mv
 * @jack_type: type of jack that is expected for this voltage
 * @debounce_time: debounce_time for jack, codec driver should wait for this
 *              duration before reading the adc for voltages
 * @:list: list container
 */
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;
};

/**
 * struct snd_soc_jack_gpio - Describes a gpio pin for jack detection
 *
 * @gpio:         legacy gpio number
 * @idx:          gpio descriptor index within the function of the GPIO
 *                consumer device
 * @gpiod_dev     GPIO consumer device
 * @name:         gpio name. Also as connection ID for the GPIO consumer
 *                device function name lookup
 * @report:       value to report when jack detected
 * @invert:       report presence in low state
 * @debouce_time: debouce time in ms
 * @wake:         enable as wake source
 * @jack_status_check: callback function which overrides the detection
 *                     to provide more complex checks (eg, reading an
 *                     ADC).
 */
struct snd_soc_jack_gpio {
        unsigned int gpio;
        unsigned int idx;
        struct device *gpiod_dev;
        const char *name;
        int report;
        int invert;
        int debounce_time;
        bool wake;

        struct snd_soc_jack *jack;
        struct delayed_work work;
        struct gpio_desc *desc;

        void *data;
        int (*jack_status_check)(void *data);
};

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 *);
};

/* component interface */
struct snd_soc_component_driver {
        const char *name;

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

        int (*probe)(struct snd_soc_component *);
        void (*remove)(struct snd_soc_component *);

        /* DT */
        int (*of_xlate_dai_name)(struct snd_soc_component *component,
                                 struct of_phandle_args *args,
                                 const char **dai_name);
        void (*seq_notifier)(struct snd_soc_component *, enum snd_soc_dapm_type,
                int subseq);
        int (*stream_event)(struct snd_soc_component *, int event);

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

struct snd_soc_component {
        const char *name;
        int id;
        const char *name_prefix;
        struct device *dev;
        struct snd_soc_card *card;

        unsigned int active;

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

        struct list_head list;

        struct snd_soc_dai_driver *dai_drv;
        int num_dai;

        const struct snd_soc_component_driver *driver;

        struct list_head dai_list;

        int (*read)(struct snd_soc_component *, unsigned int, unsigned int *);
        int (*write)(struct snd_soc_component *, unsigned int, unsigned int);

        struct regmap *regmap;
        int val_bytes;

        struct mutex io_mutex;

#ifdef CONFIG_DEBUG_FS
        struct dentry *debugfs_root;
#endif

        /*
        * DO NOT use any of the fields below in drivers, they are temporary and
        * are going to be removed again soon. If you use them in driver code the
        * driver will be marked as BROKEN when these fields are removed.
        */

        /* Don't use these, use snd_soc_component_get_dapm() */
        struct snd_soc_dapm_context dapm;
        struct snd_soc_dapm_context *dapm_ptr;

        const struct snd_kcontrol_new *controls;
        unsigned int num_controls;
        const struct snd_soc_dapm_widget *dapm_widgets;
        unsigned int num_dapm_widgets;
        const struct snd_soc_dapm_route *dapm_routes;
        unsigned int num_dapm_routes;
        struct snd_soc_codec *codec;

        int (*probe)(struct snd_soc_component *);
        void (*remove)(struct snd_soc_component *);

#ifdef CONFIG_DEBUG_FS
        void (*init_debugfs)(struct snd_soc_component *component);
        const char *debugfs_prefix;
#endif
};

/* SoC Audio Codec device */
struct snd_soc_codec {
        struct device *dev;
        const struct snd_soc_codec_driver *driver;

        struct mutex mutex;
        struct list_head list;
        struct list_head card_list;

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

        /* codec IO */
        void *control_data; /* codec control (i2c/3wire) data */
        hw_write_t hw_write;
        void *reg_cache;
        struct mutex cache_rw_mutex;

        /* component */
        struct snd_soc_component component;

        /* dapm */
        struct snd_soc_dapm_context dapm;

#ifdef CONFIG_DEBUG_FS
        struct dentry *debugfs_reg;
#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 *);
        struct snd_soc_component_driver component_driver;

        /* 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 */
        struct regmap *(*get_regmap)(struct device *);
        unsigned int (*read)(struct snd_soc_codec *, unsigned int);
        int (*write)(struct snd_soc_codec *, unsigned int, unsigned int);
        unsigned int reg_cache_size;
        short reg_cache_step;
        short reg_word_size;
        const void *reg_cache_default;

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

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

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

/* 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);
        struct snd_soc_component_driver component_driver;

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

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

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

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

        int (*bespoke_trigger)(struct snd_pcm_substream *, int);
};

struct snd_soc_dai_link_component {
        const char *name;
        const struct device_node *of_node;
        const char *dai_name;
};

struct snd_soc_platform {
        struct device *dev;
        const struct snd_soc_platform_driver *driver;

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

        struct list_head list;

        struct snd_soc_component component;
};

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;
        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;
        struct device_node *codec_of_node;
        /* You MUST specify the DAI name within the codec */
        const char *codec_dai_name;

        struct snd_soc_dai_link_component *codecs;
        unsigned int num_codecs;

        /*
         * 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;
        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;
        unsigned int symmetric_channels:1;
        unsigned int symmetric_samplebits: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;

        /* DPCM capture and Playback support */
        unsigned int dpcm_capture:1;
        unsigned int dpcm_playback: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 */
        const struct snd_soc_ops *ops;
        const struct snd_soc_compr_ops *compr_ops;

        /* For unidirectional dai links */
        bool playback_only;
        bool capture_only;
};

struct snd_soc_codec_conf {
        /*
         * specify device either by device name, or by
         * DT/OF node, but not both.
         */
        const char *dev_name;
        const struct device_node *of_node;

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

struct snd_soc_aux_dev {
        const char *name;               /* Codec name */

        /*
         * specify multi-codec either by device name, or by
         * DT/OF node, but not both.
         */
        const char *codec_name;
        const struct device_node *codec_of_node;

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

/* 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 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 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;
        struct snd_soc_dapm_update *update;

#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];
        int fe_compr;

        long pmdown_time;
        unsigned char pop_wait:1;

        /* 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 snd_soc_component *component; /* Only valid for AUX dev rtds */

        struct snd_soc_dai **codec_dais;
        unsigned int num_codecs;

        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;
        int reg, rreg;
        unsigned int shift, rshift;
        unsigned int sign_bit;
        unsigned int invert:1;
        unsigned int autodisable:1;
};

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

struct soc_bytes_ext {
        int max;
        /* used for TLV byte control */
        int (*get)(unsigned int __user *bytes, unsigned int size);
        int (*put)(const unsigned int __user *bytes, unsigned int size);
};

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

/* enumerated kcontrol */
struct soc_enum {
        int reg;
        unsigned char shift_l;
        unsigned char shift_r;
        unsigned int items;
        unsigned int mask;
        const char * const *texts;
        const unsigned int *values;
};

/**
 * snd_soc_component_to_codec() - Casts a component to the CODEC it is embedded in
 * @component: The component to cast to a CODEC
 *
 * This function must only be used on components that are known to be CODECs.
 * Otherwise the behavior is undefined.
 */
static inline struct snd_soc_codec *snd_soc_component_to_codec(
        struct snd_soc_component *component)
{
        return container_of(component, struct snd_soc_codec, component);
}

/**
 * snd_soc_component_to_platform() - Casts a component to the platform it is embedded in
 * @component: The component to cast to a platform
 *
 * This function must only be used on components that are known to be platforms.
 * Otherwise the behavior is undefined.
 */
static inline struct snd_soc_platform *snd_soc_component_to_platform(
        struct snd_soc_component *component)
{
        return container_of(component, struct snd_soc_platform, component);
}

/**
 * snd_soc_dapm_to_component() - Casts a DAPM context to the component it is
 *  embedded in
 * @dapm: The DAPM context to cast to the component
 *
 * This function must only be used on DAPM contexts that are known to be part of
 * a component (e.g. in a component driver). Otherwise the behavior is
 * undefined.
 */
static inline struct snd_soc_component *snd_soc_dapm_to_component(
        struct snd_soc_dapm_context *dapm)
{
        return container_of(dapm, struct snd_soc_component, dapm);
}

/**
 * snd_soc_dapm_to_codec() - Casts a DAPM context to the CODEC it is embedded in
 * @dapm: The DAPM context to cast to the CODEC
 *
 * This function must only be used on DAPM contexts that are known to be part of
 * a CODEC (e.g. in a CODEC driver). Otherwise the behavior is undefined.
 */
static inline struct snd_soc_codec *snd_soc_dapm_to_codec(
        struct snd_soc_dapm_context *dapm)
{
        return container_of(dapm, struct snd_soc_codec, dapm);
}

/**
 * snd_soc_dapm_to_platform() - Casts a DAPM context to the platform it is
 *  embedded in
 * @dapm: The DAPM context to cast to the platform.
 *
 * This function must only be used on DAPM contexts that are known to be part of
 * a platform (e.g. in a platform driver). Otherwise the behavior is undefined.
 */
static inline struct snd_soc_platform *snd_soc_dapm_to_platform(
        struct snd_soc_dapm_context *dapm)
{
        return snd_soc_component_to_platform(snd_soc_dapm_to_component(dapm));
}

/**
 * snd_soc_component_get_dapm() - Returns the DAPM context associated with a
 *  component
 * @component: The component for which to get the DAPM context
 */
static inline struct snd_soc_dapm_context *snd_soc_component_get_dapm(
        struct snd_soc_component *component)
{
        return component->dapm_ptr;
}

/* codec IO */
unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg);
int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg,
        unsigned int val);

/* component IO */
int snd_soc_component_read(struct snd_soc_component *component,
        unsigned int reg, unsigned int *val);
int snd_soc_component_write(struct snd_soc_component *component,
        unsigned int reg, unsigned int val);
int snd_soc_component_update_bits(struct snd_soc_component *component,
        unsigned int reg, unsigned int mask, unsigned int val);
int snd_soc_component_update_bits_async(struct snd_soc_component *component,
        unsigned int reg, unsigned int mask, unsigned int val);
void snd_soc_component_async_complete(struct snd_soc_component *component);
int snd_soc_component_test_bits(struct snd_soc_component *component,
        unsigned int reg, unsigned int mask, unsigned int value);

/* 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_component_set_drvdata(struct snd_soc_component *c,
                void *data)
{
        dev_set_drvdata(c->dev, data);
}

static inline void *snd_soc_component_get_drvdata(struct snd_soc_component *c)
{
        return dev_get_drvdata(c->dev);
}

static inline void snd_soc_codec_set_drvdata(struct snd_soc_codec *codec,
                void *data)
{
        snd_soc_component_set_drvdata(&codec->component, data);
}

static inline void *snd_soc_codec_get_drvdata(struct snd_soc_codec *codec)
{
        return snd_soc_component_get_drvdata(&codec->component);
}

static inline void snd_soc_platform_set_drvdata(struct snd_soc_platform *platform,
                void *data)
{
        snd_soc_component_set_drvdata(&platform->component, data);
}

static inline void *snd_soc_platform_get_drvdata(struct snd_soc_platform *platform)
{
        return snd_soc_component_get_drvdata(&platform->component);
}

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->codec_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;
}

static inline unsigned int snd_soc_enum_val_to_item(struct soc_enum *e,
        unsigned int val)
{
        unsigned int i;

        if (!e->values)
                return val;

        for (i = 0; i < e->items; i++)
                if (val == e->values[i])
                        return i;

        return 0;
}

static inline unsigned int snd_soc_enum_item_to_val(struct soc_enum *e,
        unsigned int item)
{
        if (!e->values)
                return item;

        return e->values[item];
}

static inline bool snd_soc_component_is_active(
        struct snd_soc_component *component)
{
        return component->active != 0;
}

static inline bool snd_soc_codec_is_active(struct snd_soc_codec *codec)
{
        return snd_soc_component_is_active(&codec->component);
}

/**
 * snd_soc_kcontrol_component() - Returns the component that registered the
 *  control
 * @kcontrol: The control for which to get the component
 *
 * Note: This function will work correctly if the control has been registered
 * for a component. Either with snd_soc_add_codec_controls() or
 * snd_soc_add_platform_controls() or via  table based setup for either a
 * CODEC, a platform or component driver. Otherwise the behavior is undefined.
 */
static inline struct snd_soc_component *snd_soc_kcontrol_component(
        struct snd_kcontrol *kcontrol)
{
        return snd_kcontrol_chip(kcontrol);
}

/**
 * snd_soc_kcontrol_codec() - Returns the CODEC that registered the control
 * @kcontrol: The control for which to get the CODEC
 *
 * Note: This function will only work correctly if the control has been
 * registered with snd_soc_add_codec_controls() or via table based setup of
 * snd_soc_codec_driver. Otherwise the behavior is undefined.
 */
static inline struct snd_soc_codec *snd_soc_kcontrol_codec(
        struct snd_kcontrol *kcontrol)
{
        return snd_soc_component_to_codec(snd_soc_kcontrol_component(kcontrol));
}

/**
 * snd_soc_kcontrol_platform() - Returns the platform that registerd the control
 * @kcontrol: The control for which to get the platform
 *
 * Note: This function will only work correctly if the control has been
 * registered with snd_soc_add_platform_controls() or via table based setup of
 * a snd_soc_platform_driver. Otherwise the behavior is undefined.
 */
static inline struct snd_soc_platform *snd_soc_kcontrol_platform(
        struct snd_kcontrol *kcontrol)
{
        return snd_soc_component_to_platform(snd_soc_kcontrol_component(kcontrol));
}

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_simple_widgets(struct snd_soc_card *card,
                                          const char *propname);
int snd_soc_of_parse_tdm_slot(struct device_node *np,
                              unsigned int *slots,
                              unsigned int *slot_width);
int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
                                   const char *propname);
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
                                     const char *prefix,
                                     struct device_node **bitclkmaster,
                                     struct device_node **framemaster);
int snd_soc_of_get_dai_name(struct device_node *of_node,
                            const char **dai_name);

#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;

/* Helper functions */
static inline void snd_soc_dapm_mutex_lock(struct snd_soc_dapm_context *dapm)
{
        mutex_lock(&dapm->card->dapm_mutex);
}

static inline void snd_soc_dapm_mutex_unlock(struct snd_soc_dapm_context *dapm)
{
        mutex_unlock(&dapm->card->dapm_mutex);
}

#endif
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root/include/sound/soc.h

INCLUDED FROM

DEFINITIONS
