include/sound/soc.h - kernel/msm-4.9 - Gitiles

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

 #ifndef __LINUX_SND_SOC_H
 #define __LINUX_SND_SOC_H

 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/control.h>
 #include <sound/ac97_codec.h>

 #define SND_SOC_VERSION "0.13.2"

 /*
  * Convenience kcontrol builders
  */
 #define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
 	((unsigned long)&(struct soc_mixer_control) \
 	{.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
 	.invert = xinvert})
 #define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
 	((unsigned long)&(struct soc_mixer_control) \
 	{.reg = xreg, .max = xmax, .invert = xinvert})
 #define SOC_SINGLE(xname, reg, shift, max, invert) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
 	.put = snd_soc_put_volsw, \
 	.private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 #define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 		 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 	.tlv.p = (tlv_array), \
 	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
 	.put = snd_soc_put_volsw, \
 	.private_value =  SOC_SINGLE_VALUE(reg, shift, max, invert) }
 #define SOC_DOUBLE(xname, xreg, shift_left, shift_right, 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 = (unsigned long)&(struct soc_mixer_control) \
 		{.reg = xreg, .shift = shift_left, .rshift = shift_right, \
 		 .max = xmax, .invert = xinvert} }
 #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_2r, \
 	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
 	.private_value = (unsigned long)&(struct soc_mixer_control) \
 		{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 		.max = xmax, .invert = xinvert} }
 #define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, 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 = (unsigned long)&(struct soc_mixer_control) \
 		{.reg = xreg, .shift = shift_left, .rshift = shift_right,\
 		 .max = xmax, .invert = xinvert} }
 #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_2r, \
 	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
 	.private_value = (unsigned long)&(struct soc_mixer_control) \
 		{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
 		.max = xmax, .invert = 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} }
 #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 }
 #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_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) }
 #define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
 	 xhandler_get, xhandler_put, tlv_array) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
 		 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 	.tlv.p = (tlv_array), \
 	.info = snd_soc_info_volsw, \
 	.get = xhandler_get, .put = xhandler_put, \
 	.private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
 #define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.info = snd_soc_info_bool_ext, \
 	.get = xhandler_get, .put = xhandler_put, \
 	.private_value = xdata }
 #define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
 	.info = snd_soc_info_enum_ext, \
 	.get = xhandler_get, .put = xhandler_put, \
 	.private_value = (unsigned long)&xenum }

 /*
  * 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_ON,
 	SND_SOC_BIAS_PREPARE,
 	SND_SOC_BIAS_STANDBY,
 	SND_SOC_BIAS_OFF,
 };

 /*
  * Digital Audio Interface (DAI) types
  */
 #define SND_SOC_DAI_AC97	0x1
 #define SND_SOC_DAI_I2S		0x2
 #define SND_SOC_DAI_PCM		0x4
 #define SND_SOC_DAI_AC97_BUS	0x8	/* for custom i.e. non ac97_codec.c */

 /*
  * DAI hardware audio formats
  */
 #define SND_SOC_DAIFMT_I2S		0	/* I2S mode */
 #define SND_SOC_DAIFMT_RIGHT_J	1	/* Right justified mode */
 #define SND_SOC_DAIFMT_LEFT_J	2	/* Left Justified mode */
 #define SND_SOC_DAIFMT_DSP_A	3	/* L data msb after FRM or LRC */
 #define SND_SOC_DAIFMT_DSP_B	4	/* L data msb during FRM or LRC */
 #define SND_SOC_DAIFMT_AC97		5	/* AC97 */

 #define SND_SOC_DAIFMT_MSB 	SND_SOC_DAIFMT_LEFT_J
 #define SND_SOC_DAIFMT_LSB	SND_SOC_DAIFMT_RIGHT_J

 /*
  * DAI Gating
  */
 #define SND_SOC_DAIFMT_CONT			(0 << 4)	/* continuous clock */
 #define SND_SOC_DAIFMT_GATED		(1 << 4)	/* clock is gated when not Tx/Rx */

 /*
  * DAI Sync
  * Synchronous LR (Left Right) clocks and Frame signals.
  */
 #define SND_SOC_DAIFMT_SYNC		(0 << 5)	/* Tx FRM = Rx FRM */
 #define SND_SOC_DAIFMT_ASYNC		(1 << 5)	/* Tx FRM ~ Rx FRM */

 /*
  * TDM
  */
 #define SND_SOC_DAIFMT_TDM		(1 << 6)

 /*
  * DAI hardware signal inversions
  */
 #define SND_SOC_DAIFMT_NB_NF		(0 << 8)	/* normal bclk + frm */
 #define SND_SOC_DAIFMT_NB_IF		(1 << 8)	/* normal bclk + inv frm */
 #define SND_SOC_DAIFMT_IB_NF		(2 << 8)	/* invert bclk + nor frm */
 #define SND_SOC_DAIFMT_IB_IF		(3 << 8)	/* invert bclk + frm */

 /*
  * DAI hardware clock masters
  * This is wrt the codec, the inverse is true for the interface
  * i.e. if the codec is clk and frm master then the interface is
  * clk and frame slave.
  */
 #define SND_SOC_DAIFMT_CBM_CFM	(0 << 12) /* codec clk & frm master */
 #define SND_SOC_DAIFMT_CBS_CFM	(1 << 12) /* codec clk slave & frm master */
 #define SND_SOC_DAIFMT_CBM_CFS	(2 << 12) /* codec clk master & frame slave */
 #define SND_SOC_DAIFMT_CBS_CFS	(3 << 12) /* codec clk & frm slave */

 #define SND_SOC_DAIFMT_FORMAT_MASK		0x000f
 #define SND_SOC_DAIFMT_CLOCK_MASK		0x00f0
 #define SND_SOC_DAIFMT_INV_MASK			0x0f00
 #define SND_SOC_DAIFMT_MASTER_MASK		0xf000


 /*
  * Master Clock Directions
  */
 #define SND_SOC_CLOCK_IN	0
 #define SND_SOC_CLOCK_OUT	1

 /*
  * AC97 codec ID's bitmask
  */
 #define SND_SOC_DAI_AC97_ID0	(1 << 0)
 #define SND_SOC_DAI_AC97_ID1	(1 << 1)
 #define SND_SOC_DAI_AC97_ID2	(1 << 2)
 #define SND_SOC_DAI_AC97_ID3	(1 << 3)

 struct snd_soc_device;
 struct snd_soc_pcm_stream;
 struct snd_soc_ops;
 struct snd_soc_dai_mode;
 struct snd_soc_pcm_runtime;
 struct snd_soc_dai;
 struct snd_soc_codec;
 struct snd_soc_machine_config;
 struct soc_enum;
 struct snd_soc_ac97_ops;
 struct snd_soc_clock_info;

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

 extern struct snd_ac97_bus_ops soc_ac97_ops;

 /* pcm <-> DAI connect */
 void snd_soc_free_pcms(struct snd_soc_device *socdev);
 int snd_soc_new_pcms(struct snd_soc_device *socdev, int idx, const char *xid);
 int snd_soc_register_card(struct snd_soc_device *socdev);

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

 /* codec IO */
 #define snd_soc_read(codec, reg) codec->read(codec, reg)
 #define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)

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

 /* Digital Audio Interface clocking API.*/
 int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
 	unsigned int freq, int dir);

 int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
 	int div_id, int div);

 int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
 	int pll_id, unsigned int freq_in, unsigned int freq_out);

 /* Digital Audio interface formatting */
 int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);

 int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
 	unsigned int mask, int slots);

 int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);

 /* Digital Audio Interface mute */
 int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);

 /*
  *Controls
  */
 struct snd_kcontrol *snd_soc_cnew(const struct snd_kcontrol_new *_template,
 	void *data, char *long_name);
 int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 #define snd_soc_info_bool_ext		snd_ctl_boolean_mono_info
 int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_info *uinfo);
 int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_volsw_2r(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);

 /* SoC PCM stream information */
 struct snd_soc_pcm_stream {
 	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 active:1;		/* stream is in use */
 };

 /* 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);
 };

 /* ASoC DAI ops */
 struct snd_soc_dai_ops {
 	/* DAI clocking configuration */
 	int (*set_sysclk)(struct snd_soc_dai *dai,
 		int clk_id, unsigned int freq, int dir);
 	int (*set_pll)(struct snd_soc_dai *dai,
 		int pll_id, unsigned int freq_in, unsigned int freq_out);
 	int (*set_clkdiv)(struct snd_soc_dai *dai, int div_id, int div);

 	/* DAI format configuration */
 	int (*set_fmt)(struct snd_soc_dai *dai, unsigned int fmt);
 	int (*set_tdm_slot)(struct snd_soc_dai *dai,
 		unsigned int mask, int slots);
 	int (*set_tristate)(struct snd_soc_dai *dai, int tristate);

 	/* digital mute */
 	int (*digital_mute)(struct snd_soc_dai *dai, int mute);
 };

 /* SoC  DAI (Digital Audio Interface) */
 struct snd_soc_dai {
 	/* DAI description */
 	char *name;
 	unsigned int id;
 	unsigned char type;

 	/* DAI callbacks */
 	int (*probe)(struct platform_device *pdev,
 		     struct snd_soc_dai *dai);
 	void (*remove)(struct platform_device *pdev,
 		       struct snd_soc_dai *dai);
 	int (*suspend)(struct platform_device *pdev,
 		struct snd_soc_dai *dai);
 	int (*resume)(struct platform_device *pdev,
 		struct snd_soc_dai *dai);

 	/* ops */
 	struct snd_soc_ops ops;
 	struct snd_soc_dai_ops dai_ops;

 	/* DAI capabilities */
 	struct snd_soc_pcm_stream capture;
 	struct snd_soc_pcm_stream playback;

 	/* DAI runtime info */
 	struct snd_pcm_runtime *runtime;
 	struct snd_soc_codec *codec;
 	unsigned int active;
 	unsigned char pop_wait:1;
 	void *dma_data;

 	/* DAI private data */
 	void *private_data;
 };

 /* SoC Audio Codec */
 struct snd_soc_codec {
 	char *name;
 	struct module *owner;
 	struct mutex mutex;

 	/* callbacks */
 	int (*set_bias_level)(struct snd_soc_codec *,
 			      enum snd_soc_bias_level level);

 	/* runtime */
 	struct snd_card *card;
 	struct snd_ac97 *ac97;  /* for ad-hoc ac97 devices */
 	unsigned int active;
 	unsigned int pcm_devs;
 	void *private_data;

 	/* codec IO */
 	void *control_data; /* codec control (i2c/3wire) data */
 	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);
 	hw_write_t hw_write;
 	hw_read_t hw_read;
 	void *reg_cache;
 	short reg_cache_size;
 	short reg_cache_step;

 	/* dapm */
 	struct list_head dapm_widgets;
 	struct list_head dapm_paths;
 	enum snd_soc_bias_level bias_level;
 	enum snd_soc_bias_level suspend_bias_level;
 	struct delayed_work delayed_work;

 	/* codec DAI's */
 	struct snd_soc_dai *dai;
 	unsigned int num_dai;
 };

 /* codec device */
 struct snd_soc_codec_device {
 	int (*probe)(struct platform_device *pdev);
 	int (*remove)(struct platform_device *pdev);
 	int (*suspend)(struct platform_device *pdev, pm_message_t state);
 	int (*resume)(struct platform_device *pdev);
 };

 /* SoC platform interface */
 struct snd_soc_platform {
 	char *name;

 	int (*probe)(struct platform_device *pdev);
 	int (*remove)(struct platform_device *pdev);
 	int (*suspend)(struct platform_device *pdev,
 		struct snd_soc_dai *dai);
 	int (*resume)(struct platform_device *pdev,
 		struct snd_soc_dai *dai);

 	/* pcm creation and destruction */
 	int (*pcm_new)(struct snd_card *, struct snd_soc_dai *,
 		struct snd_pcm *);
 	void (*pcm_free)(struct snd_pcm *);

 	/* platform stream ops */
 	struct snd_pcm_ops *pcm_ops;
 };

 /* SoC machine DAI configuration, glues a codec and cpu DAI together */
 struct snd_soc_dai_link  {
 	char *name;			/* Codec name */
 	char *stream_name;		/* Stream name */

 	/* DAI */
 	struct snd_soc_dai *codec_dai;
 	struct snd_soc_dai *cpu_dai;

 	/* machine stream operations */
 	struct snd_soc_ops *ops;

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

 	/* DAI pcm */
 	struct snd_pcm *pcm;
 };

 /* SoC machine */
 struct snd_soc_machine {
 	char *name;

 	int (*probe)(struct platform_device *pdev);
 	int (*remove)(struct platform_device *pdev);

 	/* 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 platform_device *pdev, pm_message_t state);
 	int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
 	int (*resume_pre)(struct platform_device *pdev);
 	int (*resume_post)(struct platform_device *pdev);

 	/* callbacks */
 	int (*set_bias_level)(struct snd_soc_machine *,
 			      enum snd_soc_bias_level level);

 	/* CPU <--> Codec DAI links  */
 	struct snd_soc_dai_link *dai_link;
 	int num_links;
 };

 /* SoC Device - the audio subsystem */
 struct snd_soc_device {
 	struct device *dev;
 	struct snd_soc_machine *machine;
 	struct snd_soc_platform *platform;
 	struct snd_soc_codec *codec;
 	struct snd_soc_codec_device *codec_dev;
 	struct delayed_work delayed_work;
 	struct work_struct deferred_resume_work;
 	void *codec_data;
 };

 /* runtime channel data */
 struct snd_soc_pcm_runtime {
 	struct snd_soc_dai_link *dai;
 	struct snd_soc_device *socdev;
 };

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

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

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

	#ifndef __LINUX_SND_SOC_H
	#define __LINUX_SND_SOC_H

	#include <linux/platform_device.h>
	#include <linux/types.h>
	#include <linux/workqueue.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/control.h>
	#include <sound/ac97_codec.h>

	#define SND_SOC_VERSION "0.13.2"

	/*
	* Convenience kcontrol builders
	*/
	#define SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) \
	((unsigned long)&(struct soc_mixer_control) \
	{.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
	.invert = xinvert})
	#define SOC_SINGLE_VALUE_EXT(xreg, xmax, xinvert) \
	((unsigned long)&(struct soc_mixer_control) \
	{.reg = xreg, .max = xmax, .invert = xinvert})
	#define SOC_SINGLE(xname, reg, shift, max, invert) \
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
	.put = snd_soc_put_volsw, \
	.private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
	#define SOC_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ \|\
	SNDRV_CTL_ELEM_ACCESS_READWRITE,\
	.tlv.p = (tlv_array), \
	.info = snd_soc_info_volsw, .get = snd_soc_get_volsw,\
	.put = snd_soc_put_volsw, \
	.private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) }
	#define SOC_DOUBLE(xname, xreg, shift_left, shift_right, 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 = (unsigned long)&(struct soc_mixer_control) \
	{.reg = xreg, .shift = shift_left, .rshift = shift_right, \
	.max = xmax, .invert = xinvert} }
	#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_2r, \
	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
	.private_value = (unsigned long)&(struct soc_mixer_control) \
	{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
	.max = xmax, .invert = xinvert} }
	#define SOC_DOUBLE_TLV(xname, xreg, shift_left, shift_right, 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 = (unsigned long)&(struct soc_mixer_control) \
	{.reg = xreg, .shift = shift_left, .rshift = shift_right,\
	.max = xmax, .invert = xinvert} }
	#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_2r, \
	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
	.private_value = (unsigned long)&(struct soc_mixer_control) \
	{.reg = reg_left, .rreg = reg_right, .shift = xshift, \
	.max = xmax, .invert = 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} }
	#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 }
	#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_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) }
	#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
	xhandler_get, xhandler_put, tlv_array) \
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ \|\
	SNDRV_CTL_ELEM_ACCESS_READWRITE,\
	.tlv.p = (tlv_array), \
	.info = snd_soc_info_volsw, \
	.get = xhandler_get, .put = xhandler_put, \
	.private_value = SOC_SINGLE_VALUE(xreg, xshift, xmax, xinvert) }
	#define SOC_SINGLE_BOOL_EXT(xname, xdata, xhandler_get, xhandler_put) \
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.info = snd_soc_info_bool_ext, \
	.get = xhandler_get, .put = xhandler_put, \
	.private_value = xdata }
	#define SOC_ENUM_EXT(xname, xenum, xhandler_get, xhandler_put) \
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
	.info = snd_soc_info_enum_ext, \
	.get = xhandler_get, .put = xhandler_put, \
	.private_value = (unsigned long)&xenum }

	/*
	* 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_ON,
	SND_SOC_BIAS_PREPARE,
	SND_SOC_BIAS_STANDBY,
	SND_SOC_BIAS_OFF,
	};

	/*
	* Digital Audio Interface (DAI) types
	*/
	#define SND_SOC_DAI_AC97 0x1
	#define SND_SOC_DAI_I2S 0x2
	#define SND_SOC_DAI_PCM 0x4
	#define SND_SOC_DAI_AC97_BUS 0x8 /* for custom i.e. non ac97_codec.c */

	/*
	* DAI hardware audio formats
	*/
	#define SND_SOC_DAIFMT_I2S 0 /* I2S mode */
	#define SND_SOC_DAIFMT_RIGHT_J 1 /* Right justified mode */
	#define SND_SOC_DAIFMT_LEFT_J 2 /* Left Justified mode */
	#define SND_SOC_DAIFMT_DSP_A 3 /* L data msb after FRM or LRC */
	#define SND_SOC_DAIFMT_DSP_B 4 /* L data msb during FRM or LRC */
	#define SND_SOC_DAIFMT_AC97 5 /* AC97 */

	#define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
	#define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J

	/*
	* DAI Gating
	*/
	#define SND_SOC_DAIFMT_CONT (0 << 4) /* continuous clock */
	#define SND_SOC_DAIFMT_GATED (1 << 4) /* clock is gated when not Tx/Rx */

	/*
	* DAI Sync
	* Synchronous LR (Left Right) clocks and Frame signals.
	*/
	#define SND_SOC_DAIFMT_SYNC (0 << 5) /* Tx FRM = Rx FRM */
	#define SND_SOC_DAIFMT_ASYNC (1 << 5) /* Tx FRM ~ Rx FRM */

	/*
	* TDM
	*/
	#define SND_SOC_DAIFMT_TDM (1 << 6)

	/*
	* DAI hardware signal inversions
	*/
	#define SND_SOC_DAIFMT_NB_NF (0 << 8) /* normal bclk + frm */
	#define SND_SOC_DAIFMT_NB_IF (1 << 8) /* normal bclk + inv frm */
	#define SND_SOC_DAIFMT_IB_NF (2 << 8) /* invert bclk + nor frm */
	#define SND_SOC_DAIFMT_IB_IF (3 << 8) /* invert bclk + frm */

	/*
	* DAI hardware clock masters
	* This is wrt the codec, the inverse is true for the interface
	* i.e. if the codec is clk and frm master then the interface is
	* clk and frame slave.
	*/
	#define SND_SOC_DAIFMT_CBM_CFM (0 << 12) /* codec clk & frm master */
	#define SND_SOC_DAIFMT_CBS_CFM (1 << 12) /* codec clk slave & frm master */
	#define SND_SOC_DAIFMT_CBM_CFS (2 << 12) /* codec clk master & frame slave */
	#define SND_SOC_DAIFMT_CBS_CFS (3 << 12) /* codec clk & frm slave */

	#define SND_SOC_DAIFMT_FORMAT_MASK 0x000f
	#define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0
	#define SND_SOC_DAIFMT_INV_MASK 0x0f00
	#define SND_SOC_DAIFMT_MASTER_MASK 0xf000


	/*
	* Master Clock Directions
	*/
	#define SND_SOC_CLOCK_IN 0
	#define SND_SOC_CLOCK_OUT 1

	/*
	* AC97 codec ID's bitmask
	*/
	#define SND_SOC_DAI_AC97_ID0 (1 << 0)
	#define SND_SOC_DAI_AC97_ID1 (1 << 1)
	#define SND_SOC_DAI_AC97_ID2 (1 << 2)
	#define SND_SOC_DAI_AC97_ID3 (1 << 3)

	struct snd_soc_device;
	struct snd_soc_pcm_stream;
	struct snd_soc_ops;
	struct snd_soc_dai_mode;
	struct snd_soc_pcm_runtime;
	struct snd_soc_dai;
	struct snd_soc_codec;
	struct snd_soc_machine_config;
	struct soc_enum;
	struct snd_soc_ac97_ops;
	struct snd_soc_clock_info;

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

	extern struct snd_ac97_bus_ops soc_ac97_ops;

	/* pcm <-> DAI connect */
	void snd_soc_free_pcms(struct snd_soc_device *socdev);
	int snd_soc_new_pcms(struct snd_soc_device socdev, int idx, const char xid);
	int snd_soc_register_card(struct snd_soc_device *socdev);

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

	/* codec IO */
	#define snd_soc_read(codec, reg) codec->read(codec, reg)
	#define snd_soc_write(codec, reg, value) codec->write(codec, reg, value)

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

	/* Digital Audio Interface clocking API.*/
	int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
	unsigned int freq, int dir);

	int snd_soc_dai_set_clkdiv(struct snd_soc_dai *dai,
	int div_id, int div);

	int snd_soc_dai_set_pll(struct snd_soc_dai *dai,
	int pll_id, unsigned int freq_in, unsigned int freq_out);

	/* Digital Audio interface formatting */
	int snd_soc_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt);

	int snd_soc_dai_set_tdm_slot(struct snd_soc_dai *dai,
	unsigned int mask, int slots);

	int snd_soc_dai_set_tristate(struct snd_soc_dai *dai, int tristate);

	/* Digital Audio Interface mute */
	int snd_soc_dai_digital_mute(struct snd_soc_dai *dai, int mute);

	/*
	*Controls
	*/
	struct snd_kcontrol snd_soc_cnew(const struct snd_kcontrol_new _template,
	void data, char long_name);
	int snd_soc_info_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo);
	int snd_soc_info_enum_ext(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo);
	int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol);
	int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol);
	int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo);
	int snd_soc_info_volsw_ext(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo);
	#define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
	int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol);
	int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol);
	int snd_soc_info_volsw_2r(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_info *uinfo);
	int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol);
	int snd_soc_put_volsw_2r(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);

	/* SoC PCM stream information */
	struct snd_soc_pcm_stream {
	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 active:1; /* stream is in use */
	};

	/* 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);
	};

	/* ASoC DAI ops */
	struct snd_soc_dai_ops {
	/* DAI clocking configuration */
	int (set_sysclk)(struct snd_soc_dai dai,
	int clk_id, unsigned int freq, int dir);
	int (set_pll)(struct snd_soc_dai dai,
	int pll_id, unsigned int freq_in, unsigned int freq_out);
	int (set_clkdiv)(struct snd_soc_dai dai, int div_id, int div);

	/* DAI format configuration */
	int (set_fmt)(struct snd_soc_dai dai, unsigned int fmt);
	int (set_tdm_slot)(struct snd_soc_dai dai,
	unsigned int mask, int slots);
	int (set_tristate)(struct snd_soc_dai dai, int tristate);

	/* digital mute */
	int (digital_mute)(struct snd_soc_dai dai, int mute);
	};

	/* SoC DAI (Digital Audio Interface) */
	struct snd_soc_dai {
	/* DAI description */
	char *name;
	unsigned int id;
	unsigned char type;

	/* DAI callbacks */
	int (probe)(struct platform_device pdev,
	struct snd_soc_dai *dai);
	void (remove)(struct platform_device pdev,
	struct snd_soc_dai *dai);
	int (suspend)(struct platform_device pdev,
	struct snd_soc_dai *dai);
	int (resume)(struct platform_device pdev,
	struct snd_soc_dai *dai);

	/* ops */
	struct snd_soc_ops ops;
	struct snd_soc_dai_ops dai_ops;

	/* DAI capabilities */
	struct snd_soc_pcm_stream capture;
	struct snd_soc_pcm_stream playback;

	/* DAI runtime info */
	struct snd_pcm_runtime *runtime;
	struct snd_soc_codec *codec;
	unsigned int active;
	unsigned char pop_wait:1;
	void *dma_data;

	/* DAI private data */
	void *private_data;
	};

	/* SoC Audio Codec */
	struct snd_soc_codec {
	char *name;
	struct module *owner;
	struct mutex mutex;

	/* callbacks */
	int (set_bias_level)(struct snd_soc_codec ,
	enum snd_soc_bias_level level);

	/* runtime */
	struct snd_card *card;
	struct snd_ac97 ac97; / for ad-hoc ac97 devices */
	unsigned int active;
	unsigned int pcm_devs;
	void *private_data;

	/* codec IO */
	void control_data; / codec control (i2c/3wire) data */
	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);
	hw_write_t hw_write;
	hw_read_t hw_read;
	void *reg_cache;
	short reg_cache_size;
	short reg_cache_step;

	/* dapm */
	struct list_head dapm_widgets;
	struct list_head dapm_paths;
	enum snd_soc_bias_level bias_level;
	enum snd_soc_bias_level suspend_bias_level;
	struct delayed_work delayed_work;

	/* codec DAI's */
	struct snd_soc_dai *dai;
	unsigned int num_dai;
	};

	/* codec device */
	struct snd_soc_codec_device {
	int (probe)(struct platform_device pdev);
	int (remove)(struct platform_device pdev);
	int (suspend)(struct platform_device pdev, pm_message_t state);
	int (resume)(struct platform_device pdev);
	};

	/* SoC platform interface */
	struct snd_soc_platform {
	char *name;

	int (probe)(struct platform_device pdev);
	int (remove)(struct platform_device pdev);
	int (suspend)(struct platform_device pdev,
	struct snd_soc_dai *dai);
	int (resume)(struct platform_device pdev,
	struct snd_soc_dai *dai);

	/* pcm creation and destruction */
	int (pcm_new)(struct snd_card , struct snd_soc_dai *,
	struct snd_pcm *);
	void (pcm_free)(struct snd_pcm );

	/* platform stream ops */
	struct snd_pcm_ops *pcm_ops;
	};

	/* SoC machine DAI configuration, glues a codec and cpu DAI together */
	struct snd_soc_dai_link {
	char name; / Codec name */
	char stream_name; / Stream name */

	/* DAI */
	struct snd_soc_dai *codec_dai;
	struct snd_soc_dai *cpu_dai;

	/* machine stream operations */
	struct snd_soc_ops *ops;

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

	/* DAI pcm */
	struct snd_pcm *pcm;
	};

	/* SoC machine */
	struct snd_soc_machine {
	char *name;

	int (probe)(struct platform_device pdev);
	int (remove)(struct platform_device pdev);

	/* 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 platform_device pdev, pm_message_t state);
	int (suspend_post)(struct platform_device pdev, pm_message_t state);
	int (resume_pre)(struct platform_device pdev);
	int (resume_post)(struct platform_device pdev);

	/* callbacks */
	int (set_bias_level)(struct snd_soc_machine ,
	enum snd_soc_bias_level level);

	/* CPU <--> Codec DAI links */
	struct snd_soc_dai_link *dai_link;
	int num_links;
	};

	/* SoC Device - the audio subsystem */
	struct snd_soc_device {
	struct device *dev;
	struct snd_soc_machine *machine;
	struct snd_soc_platform *platform;
	struct snd_soc_codec *codec;
	struct snd_soc_codec_device *codec_dev;
	struct delayed_work delayed_work;
	struct work_struct deferred_resume_work;
	void *codec_data;
	};

	/* runtime channel data */
	struct snd_soc_pcm_runtime {
	struct snd_soc_dai_link *dai;
	struct snd_soc_device *socdev;
	};

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

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

	#endif