- 根目录:
- include
- sound
- soc.h
/*
* 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_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_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, 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 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 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_control_type {
SND_SOC_I2C = 1,
SND_SOC_SPI,
SND_SOC_REGMAP,
};
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);
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_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_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);
#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 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);
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_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_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);
#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_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: gpio number
* @name: gpio name
* @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;
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);
};
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;
/* DT */
int (*of_xlate_dai_name)(struct snd_soc_component *component,
struct of_phandle_args *args,
const char **dai_name);
};
struct snd_soc_component {
const char *name;
int id;
struct device *dev;
struct list_head list;
struct snd_soc_dai_driver *dai_drv;
int num_dai;
const struct snd_soc_component_driver *driver;
};
/* 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;
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 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 */
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);
void *reg_cache;
struct mutex cache_rw_mutex;
int val_bytes;
/* component */
struct snd_soc_component component;
/* 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;
#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 */
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;
/* 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 */
const struct snd_pcm_ops *ops;
/* platform stream compress ops */
const 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;
const 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;
#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;
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 {
const char *dev_name;
/*
* 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 */
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;
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 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 invert:1;
unsigned int autodisable:1;
};
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;
};
/* 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);
/* 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);
unsigned int snd_soc_of_parse_daifmt(struct device_node *np,
const char *prefix);
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;
#endif