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kernel-fxtec-pro1x/sound/pci/hda/hda_codec.h
Takashi Iwai d427c77eb2 [ALSA] hda-codec - Fix a typo 
The AMP mute bit is bit 7.  No real influence since no one uses this
definition yet, though...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-11 16:56:17 +02:00

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/*
* Universal Interface for Intel High Definition Audio Codec
*
* Copyright (c) 2004 Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __SOUND_HDA_CODEC_H
#define __SOUND_HDA_CODEC_H
#include <sound/info.h>
#include <sound/control.h>
#include <sound/pcm.h>
/*
* nodes
*/
#define AC_NODE_ROOT 0x00
/*
* function group types
*/
enum {
AC_GRP_AUDIO_FUNCTION = 0x01,
AC_GRP_MODEM_FUNCTION = 0x02,
};
/*
* widget types
*/
enum {
AC_WID_AUD_OUT, /* Audio Out */
AC_WID_AUD_IN, /* Audio In */
AC_WID_AUD_MIX, /* Audio Mixer */
AC_WID_AUD_SEL, /* Audio Selector */
AC_WID_PIN, /* Pin Complex */
AC_WID_POWER, /* Power */
AC_WID_VOL_KNB, /* Volume Knob */
AC_WID_BEEP, /* Beep Generator */
AC_WID_VENDOR = 0x0f /* Vendor specific */
};
/*
* GET verbs
*/
#define AC_VERB_GET_STREAM_FORMAT 0x0a00
#define AC_VERB_GET_AMP_GAIN_MUTE 0x0b00
#define AC_VERB_GET_PROC_COEF 0x0c00
#define AC_VERB_GET_COEF_INDEX 0x0d00
#define AC_VERB_PARAMETERS 0x0f00
#define AC_VERB_GET_CONNECT_SEL 0x0f01
#define AC_VERB_GET_CONNECT_LIST 0x0f02
#define AC_VERB_GET_PROC_STATE 0x0f03
#define AC_VERB_GET_SDI_SELECT 0x0f04
#define AC_VERB_GET_POWER_STATE 0x0f05
#define AC_VERB_GET_CONV 0x0f06
#define AC_VERB_GET_PIN_WIDGET_CONTROL 0x0f07
#define AC_VERB_GET_UNSOLICITED_RESPONSE 0x0f08
#define AC_VERB_GET_PIN_SENSE 0x0f09
#define AC_VERB_GET_BEEP_CONTROL 0x0f0a
#define AC_VERB_GET_EAPD_BTLENABLE 0x0f0c
#define AC_VERB_GET_DIGI_CONVERT 0x0f0d
#define AC_VERB_GET_VOLUME_KNOB_CONTROL 0x0f0f
/* f10-f1a: GPIO */
#define AC_VERB_GET_GPIO_DATA 0x0f15
#define AC_VERB_GET_GPIO_MASK 0x0f16
#define AC_VERB_GET_GPIO_DIRECTION 0x0f17
#define AC_VERB_GET_CONFIG_DEFAULT 0x0f1c
/* f20: AFG/MFG */
#define AC_VERB_GET_SUBSYSTEM_ID 0x0f20
/*
* SET verbs
*/
#define AC_VERB_SET_STREAM_FORMAT 0x200
#define AC_VERB_SET_AMP_GAIN_MUTE 0x300
#define AC_VERB_SET_PROC_COEF 0x400
#define AC_VERB_SET_COEF_INDEX 0x500
#define AC_VERB_SET_CONNECT_SEL 0x701
#define AC_VERB_SET_PROC_STATE 0x703
#define AC_VERB_SET_SDI_SELECT 0x704
#define AC_VERB_SET_POWER_STATE 0x705
#define AC_VERB_SET_CHANNEL_STREAMID 0x706
#define AC_VERB_SET_PIN_WIDGET_CONTROL 0x707
#define AC_VERB_SET_UNSOLICITED_ENABLE 0x708
#define AC_VERB_SET_PIN_SENSE 0x709
#define AC_VERB_SET_BEEP_CONTROL 0x70a
#define AC_VERB_SET_EAPD_BTLENABLE 0x70c
#define AC_VERB_SET_DIGI_CONVERT_1 0x70d
#define AC_VERB_SET_DIGI_CONVERT_2 0x70e
#define AC_VERB_SET_VOLUME_KNOB_CONTROL 0x70f
#define AC_VERB_SET_GPIO_DATA 0x715
#define AC_VERB_SET_GPIO_MASK 0x716
#define AC_VERB_SET_GPIO_DIRECTION 0x717
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_0 0x71c
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_1 0x71d
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_2 0x71e
#define AC_VERB_SET_CONFIG_DEFAULT_BYTES_3 0x71f
#define AC_VERB_SET_CODEC_RESET 0x7ff
/*
* Parameter IDs
*/
#define AC_PAR_VENDOR_ID 0x00
#define AC_PAR_SUBSYSTEM_ID 0x01
#define AC_PAR_REV_ID 0x02
#define AC_PAR_NODE_COUNT 0x04
#define AC_PAR_FUNCTION_TYPE 0x05
#define AC_PAR_AUDIO_FG_CAP 0x08
#define AC_PAR_AUDIO_WIDGET_CAP 0x09
#define AC_PAR_PCM 0x0a
#define AC_PAR_STREAM 0x0b
#define AC_PAR_PIN_CAP 0x0c
#define AC_PAR_AMP_IN_CAP 0x0d
#define AC_PAR_CONNLIST_LEN 0x0e
#define AC_PAR_POWER_STATE 0x0f
#define AC_PAR_PROC_CAP 0x10
#define AC_PAR_GPIO_CAP 0x11
#define AC_PAR_AMP_OUT_CAP 0x12
/*
* AC_VERB_PARAMETERS results (32bit)
*/
/* Function Group Type */
#define AC_FGT_TYPE (0xff<<0)
#define AC_FGT_TYPE_SHIFT 0
#define AC_FGT_UNSOL_CAP (1<<8)
/* Audio Function Group Capabilities */
#define AC_AFG_OUT_DELAY (0xf<<0)
#define AC_AFG_IN_DELAY (0xf<<8)
#define AC_AFG_BEEP_GEN (1<<16)
/* Audio Widget Capabilities */
#define AC_WCAP_STEREO (1<<0) /* stereo I/O */
#define AC_WCAP_IN_AMP (1<<1) /* AMP-in present */
#define AC_WCAP_OUT_AMP (1<<2) /* AMP-out present */
#define AC_WCAP_AMP_OVRD (1<<3) /* AMP-parameter override */
#define AC_WCAP_FORMAT_OVRD (1<<4) /* format override */
#define AC_WCAP_STRIPE (1<<5) /* stripe */
#define AC_WCAP_PROC_WID (1<<6) /* Proc Widget */
#define AC_WCAP_UNSOL_CAP (1<<7) /* Unsol capable */
#define AC_WCAP_CONN_LIST (1<<8) /* connection list */
#define AC_WCAP_DIGITAL (1<<9) /* digital I/O */
#define AC_WCAP_POWER (1<<10) /* power control */
#define AC_WCAP_LR_SWAP (1<<11) /* L/R swap */
#define AC_WCAP_DELAY (0xf<<16)
#define AC_WCAP_DELAY_SHIFT 16
#define AC_WCAP_TYPE (0xf<<20)
#define AC_WCAP_TYPE_SHIFT 20
/* supported PCM rates and bits */
#define AC_SUPPCM_RATES (0xfff << 0)
#define AC_SUPPCM_BITS_8 (1<<16)
#define AC_SUPPCM_BITS_16 (1<<17)
#define AC_SUPPCM_BITS_20 (1<<18)
#define AC_SUPPCM_BITS_24 (1<<19)
#define AC_SUPPCM_BITS_32 (1<<20)
/* supported PCM stream format */
#define AC_SUPFMT_PCM (1<<0)
#define AC_SUPFMT_FLOAT32 (1<<1)
#define AC_SUPFMT_AC3 (1<<2)
/* Pin widget capabilies */
#define AC_PINCAP_IMP_SENSE (1<<0) /* impedance sense capable */
#define AC_PINCAP_TRIG_REQ (1<<1) /* trigger required */
#define AC_PINCAP_PRES_DETECT (1<<2) /* presence detect capable */
#define AC_PINCAP_HP_DRV (1<<3) /* headphone drive capable */
#define AC_PINCAP_OUT (1<<4) /* output capable */
#define AC_PINCAP_IN (1<<5) /* input capable */
#define AC_PINCAP_BALANCE (1<<6) /* balanced I/O capable */
#define AC_PINCAP_VREF (0x37<<8)
#define AC_PINCAP_VREF_SHIFT 8
#define AC_PINCAP_EAPD (1<<16) /* EAPD capable */
/* Vref status (used in pin cap) */
#define AC_PINCAP_VREF_HIZ (1<<0) /* Hi-Z */
#define AC_PINCAP_VREF_50 (1<<1) /* 50% */
#define AC_PINCAP_VREF_GRD (1<<2) /* ground */
#define AC_PINCAP_VREF_80 (1<<4) /* 80% */
#define AC_PINCAP_VREF_100 (1<<5) /* 100% */
/* Amplifier capabilities */
#define AC_AMPCAP_OFFSET (0x7f<<0) /* 0dB offset */
#define AC_AMPCAP_OFFSET_SHIFT 0
#define AC_AMPCAP_NUM_STEPS (0x7f<<8) /* number of steps */
#define AC_AMPCAP_NUM_STEPS_SHIFT 8
#define AC_AMPCAP_STEP_SIZE (0x7f<<16) /* step size 0-32dB in 0.25dB */
#define AC_AMPCAP_STEP_SIZE_SHIFT 16
#define AC_AMPCAP_MUTE (1<<31) /* mute capable */
#define AC_AMPCAP_MUTE_SHIFT 31
/* Connection list */
#define AC_CLIST_LENGTH (0x7f<<0)
#define AC_CLIST_LONG (1<<7)
/* Supported power status */
#define AC_PWRST_D0SUP (1<<0)
#define AC_PWRST_D1SUP (1<<1)
#define AC_PWRST_D2SUP (1<<2)
#define AC_PWRST_D3SUP (1<<3)
/* Power state values */
#define AC_PWRST_D0 0x00
#define AC_PWRST_D1 0x01
#define AC_PWRST_D2 0x02
#define AC_PWRST_D3 0x03
/* Processing capabilies */
#define AC_PCAP_BENIGN (1<<0)
#define AC_PCAP_NUM_COEF (0xff<<8)
/* Volume knobs capabilities */
#define AC_KNBCAP_NUM_STEPS (0x7f<<0)
#define AC_KNBCAP_DELTA (1<<8)
/*
* Control Parameters
*/
/* Amp gain/mute */
#define AC_AMP_MUTE (1<<7)
#define AC_AMP_GAIN (0x7f)
#define AC_AMP_GET_INDEX (0xf<<0)
#define AC_AMP_GET_LEFT (1<<13)
#define AC_AMP_GET_RIGHT (0<<13)
#define AC_AMP_GET_OUTPUT (1<<15)
#define AC_AMP_GET_INPUT (0<<15)
#define AC_AMP_SET_INDEX (0xf<<8)
#define AC_AMP_SET_INDEX_SHIFT 8
#define AC_AMP_SET_RIGHT (1<<12)
#define AC_AMP_SET_LEFT (1<<13)
#define AC_AMP_SET_INPUT (1<<14)
#define AC_AMP_SET_OUTPUT (1<<15)
/* DIGITAL1 bits */
#define AC_DIG1_ENABLE (1<<0)
#define AC_DIG1_V (1<<1)
#define AC_DIG1_VCFG (1<<2)
#define AC_DIG1_EMPHASIS (1<<3)
#define AC_DIG1_COPYRIGHT (1<<4)
#define AC_DIG1_NONAUDIO (1<<5)
#define AC_DIG1_PROFESSIONAL (1<<6)
#define AC_DIG1_LEVEL (1<<7)
/* Pin widget control - 8bit */
#define AC_PINCTL_VREFEN (0x7<<0)
#define AC_PINCTL_VREF_HIZ 0 /* Hi-Z */
#define AC_PINCTL_VREF_50 1 /* 50% */
#define AC_PINCTL_VREF_GRD 2 /* ground */
#define AC_PINCTL_VREF_80 4 /* 80% */
#define AC_PINCTL_VREF_100 5 /* 100% */
#define AC_PINCTL_IN_EN (1<<5)
#define AC_PINCTL_OUT_EN (1<<6)
#define AC_PINCTL_HP_EN (1<<7)
/* Unsolicited response - 8bit */
#define AC_USRSP_EN (1<<7)
/* configuration default - 32bit */
#define AC_DEFCFG_SEQUENCE (0xf<<0)
#define AC_DEFCFG_DEF_ASSOC (0xf<<4)
#define AC_DEFCFG_ASSOC_SHIFT 4
#define AC_DEFCFG_MISC (0xf<<8)
#define AC_DEFCFG_MISC_SHIFT 8
#define AC_DEFCFG_COLOR (0xf<<12)
#define AC_DEFCFG_COLOR_SHIFT 12
#define AC_DEFCFG_CONN_TYPE (0xf<<16)
#define AC_DEFCFG_CONN_TYPE_SHIFT 16
#define AC_DEFCFG_DEVICE (0xf<<20)
#define AC_DEFCFG_DEVICE_SHIFT 20
#define AC_DEFCFG_LOCATION (0x3f<<24)
#define AC_DEFCFG_LOCATION_SHIFT 24
#define AC_DEFCFG_PORT_CONN (0x3<<30)
#define AC_DEFCFG_PORT_CONN_SHIFT 30
/* device device types (0x0-0xf) */
enum {
AC_JACK_LINE_OUT,
AC_JACK_SPEAKER,
AC_JACK_HP_OUT,
AC_JACK_CD,
AC_JACK_SPDIF_OUT,
AC_JACK_DIG_OTHER_OUT,
AC_JACK_MODEM_LINE_SIDE,
AC_JACK_MODEM_HAND_SIDE,
AC_JACK_LINE_IN,
AC_JACK_AUX,
AC_JACK_MIC_IN,
AC_JACK_TELEPHONY,
AC_JACK_SPDIF_IN,
AC_JACK_DIG_OTHER_IN,
AC_JACK_OTHER = 0xf,
};
/* jack connection types (0x0-0xf) */
enum {
AC_JACK_CONN_UNKNOWN,
AC_JACK_CONN_1_8,
AC_JACK_CONN_1_4,
AC_JACK_CONN_ATAPI,
AC_JACK_CONN_RCA,
AC_JACK_CONN_OPTICAL,
AC_JACK_CONN_OTHER_DIGITAL,
AC_JACK_CONN_OTHER_ANALOG,
AC_JACK_CONN_DIN,
AC_JACK_CONN_XLR,
AC_JACK_CONN_RJ11,
AC_JACK_CONN_COMB,
AC_JACK_CONN_OTHER = 0xf,
};
/* jack colors (0x0-0xf) */
enum {
AC_JACK_COLOR_UNKNOWN,
AC_JACK_COLOR_BLACK,
AC_JACK_COLOR_GREY,
AC_JACK_COLOR_BLUE,
AC_JACK_COLOR_GREEN,
AC_JACK_COLOR_RED,
AC_JACK_COLOR_ORANGE,
AC_JACK_COLOR_YELLOW,
AC_JACK_COLOR_PURPLE,
AC_JACK_COLOR_PINK,
AC_JACK_COLOR_WHITE = 0xe,
AC_JACK_COLOR_OTHER,
};
/* Jack location (0x0-0x3f) */
/* common case */
enum {
AC_JACK_LOC_NONE,
AC_JACK_LOC_REAR,
AC_JACK_LOC_FRONT,
AC_JACK_LOC_LEFT,
AC_JACK_LOC_RIGHT,
AC_JACK_LOC_TOP,
AC_JACK_LOC_BOTTOM,
};
/* bits 4-5 */
enum {
AC_JACK_LOC_EXTERNAL = 0x00,
AC_JACK_LOC_INTERNAL = 0x10,
AC_JACK_LOC_SEPARATE = 0x20,
AC_JACK_LOC_OTHER = 0x30,
};
enum {
/* external on primary chasis */
AC_JACK_LOC_REAR_PANEL = 0x07,
AC_JACK_LOC_DRIVE_BAY,
/* internal */
AC_JACK_LOC_RISER = 0x17,
AC_JACK_LOC_HDMI,
AC_JACK_LOC_ATAPI,
/* others */
AC_JACK_LOC_MOBILE_IN = 0x37,
AC_JACK_LOC_MOBILE_OUT,
};
/* Port connectivity (0-3) */
enum {
AC_JACK_PORT_COMPLEX,
AC_JACK_PORT_NONE,
AC_JACK_PORT_FIXED,
AC_JACK_PORT_BOTH,
};
/* max. connections to a widget */
#define HDA_MAX_CONNECTIONS 32
/* max. codec address */
#define HDA_MAX_CODEC_ADDRESS 0x0f
/*
* Structures
*/
struct hda_bus;
struct hda_codec;
struct hda_pcm;
struct hda_pcm_stream;
struct hda_bus_unsolicited;
/* NID type */
typedef u16 hda_nid_t;
/* bus operators */
struct hda_bus_ops {
/* send a single command */
int (*command)(struct hda_codec *codec, hda_nid_t nid, int direct,
unsigned int verb, unsigned int parm);
/* get a response from the last command */
unsigned int (*get_response)(struct hda_codec *codec);
/* free the private data */
void (*private_free)(struct hda_bus *);
};
/* template to pass to the bus constructor */
struct hda_bus_template {
void *private_data;
struct pci_dev *pci;
const char *modelname;
struct hda_bus_ops ops;
};
/*
* codec bus
*
* each controller needs to creata a hda_bus to assign the accessor.
* A hda_bus contains several codecs in the list codec_list.
*/
struct hda_bus {
struct snd_card *card;
/* copied from template */
void *private_data;
struct pci_dev *pci;
const char *modelname;
struct hda_bus_ops ops;
/* codec linked list */
struct list_head codec_list;
struct hda_codec *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1]; /* caddr -> codec */
struct mutex cmd_mutex;
/* unsolicited event queue */
struct hda_bus_unsolicited *unsol;
struct snd_info_entry *proc;
};
/*
* codec preset
*
* Known codecs have the patch to build and set up the controls/PCMs
* better than the generic parser.
*/
struct hda_codec_preset {
unsigned int id;
unsigned int mask;
unsigned int subs;
unsigned int subs_mask;
unsigned int rev;
const char *name;
int (*patch)(struct hda_codec *codec);
};
/* ops set by the preset patch */
struct hda_codec_ops {
int (*build_controls)(struct hda_codec *codec);
int (*build_pcms)(struct hda_codec *codec);
int (*init)(struct hda_codec *codec);
void (*free)(struct hda_codec *codec);
void (*unsol_event)(struct hda_codec *codec, unsigned int res);
#ifdef CONFIG_PM
int (*suspend)(struct hda_codec *codec, pm_message_t state);
int (*resume)(struct hda_codec *codec);
#endif
};
/* record for amp information cache */
struct hda_amp_info {
u32 key; /* hash key */
u32 amp_caps; /* amp capabilities */
u16 vol[2]; /* current volume & mute */
u16 status; /* update flag */
u16 next; /* next link */
};
/* PCM callbacks */
struct hda_pcm_ops {
int (*open)(struct hda_pcm_stream *info, struct hda_codec *codec,
struct snd_pcm_substream *substream);
int (*close)(struct hda_pcm_stream *info, struct hda_codec *codec,
struct snd_pcm_substream *substream);
int (*prepare)(struct hda_pcm_stream *info, struct hda_codec *codec,
unsigned int stream_tag, unsigned int format,
struct snd_pcm_substream *substream);
int (*cleanup)(struct hda_pcm_stream *info, struct hda_codec *codec,
struct snd_pcm_substream *substream);
};
/* PCM information for each substream */
struct hda_pcm_stream {
unsigned int substreams; /* number of substreams, 0 = not exist */
unsigned int channels_min; /* min. number of channels */
unsigned int channels_max; /* max. number of channels */
hda_nid_t nid; /* default NID to query rates/formats/bps, or set up */
u32 rates; /* supported rates */
u64 formats; /* supported formats (SNDRV_PCM_FMTBIT_) */
unsigned int maxbps; /* supported max. bit per sample */
struct hda_pcm_ops ops;
};
/* for PCM creation */
struct hda_pcm {
char *name;
struct hda_pcm_stream stream[2];
unsigned int is_modem; /* modem codec? */
};
/* codec information */
struct hda_codec {
struct hda_bus *bus;
unsigned int addr; /* codec addr*/
struct list_head list; /* list point */
hda_nid_t afg; /* AFG node id */
hda_nid_t mfg; /* MFG node id */
/* ids */
u32 vendor_id;
u32 subsystem_id;
u32 revision_id;
/* detected preset */
const struct hda_codec_preset *preset;
/* set by patch */
struct hda_codec_ops patch_ops;
/* resume phase - all controls should update even if
* the values are not changed
*/
unsigned int in_resume;
/* PCM to create, set by patch_ops.build_pcms callback */
unsigned int num_pcms;
struct hda_pcm *pcm_info;
/* codec specific info */
void *spec;
/* widget capabilities cache */
unsigned int num_nodes;
hda_nid_t start_nid;
u32 *wcaps;
/* hash for amp access */
u16 amp_hash[32];
int num_amp_entries;
int amp_info_size;
struct hda_amp_info *amp_info;
struct mutex spdif_mutex;
unsigned int spdif_status; /* IEC958 status bits */
unsigned short spdif_ctls; /* SPDIF control bits */
unsigned int spdif_in_enable; /* SPDIF input enable? */
};
/* direction */
enum {
HDA_INPUT, HDA_OUTPUT
};
/*
* constructors
*/
int snd_hda_bus_new(struct snd_card *card, const struct hda_bus_template *temp,
struct hda_bus **busp);
int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
struct hda_codec **codecp);
/*
* low level functions
*/
unsigned int snd_hda_codec_read(struct hda_codec *codec, hda_nid_t nid, int direct,
unsigned int verb, unsigned int parm);
int snd_hda_codec_write(struct hda_codec *codec, hda_nid_t nid, int direct,
unsigned int verb, unsigned int parm);
#define snd_hda_param_read(codec, nid, param) snd_hda_codec_read(codec, nid, 0, AC_VERB_PARAMETERS, param)
int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid, hda_nid_t *start_id);
int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid, hda_nid_t *conn_list, int max_conns);
struct hda_verb {
hda_nid_t nid;
u32 verb;
u32 param;
};
void snd_hda_sequence_write(struct hda_codec *codec, const struct hda_verb *seq);
/* unsolicited event */
int snd_hda_queue_unsol_event(struct hda_bus *bus, u32 res, u32 res_ex);
/*
* Mixer
*/
int snd_hda_build_controls(struct hda_bus *bus);
/*
* PCM
*/
int snd_hda_build_pcms(struct hda_bus *bus);
void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid, u32 stream_tag,
int channel_id, int format);
unsigned int snd_hda_calc_stream_format(unsigned int rate, unsigned int channels,
unsigned int format, unsigned int maxbps);
int snd_hda_query_supported_pcm(struct hda_codec *codec, hda_nid_t nid,
u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
int snd_hda_is_supported_format(struct hda_codec *codec, hda_nid_t nid,
unsigned int format);
/*
* Misc
*/
void snd_hda_get_codec_name(struct hda_codec *codec, char *name, int namelen);
/*
* power management
*/
#ifdef CONFIG_PM
int snd_hda_suspend(struct hda_bus *bus, pm_message_t state);
int snd_hda_resume(struct hda_bus *bus);
#endif
#endif /* __SOUND_HDA_CODEC_H */
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