hda_local.h

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/*
 * Universal Interface for Intel High Definition Audio Codec
 *
 * Local helper functions
 *
 * Copyright (c) 2004 Takashi Iwai <[email protected]>
 *
 *  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_LOCAL_H
#define __SOUND_HDA_LOCAL_H

/* We abuse kcontrol_new.subdev field to pass the NID corresponding to
 * the given new control.  If id.subdev has a bit flag HDA_SUBDEV_NID_FLAG,
 * snd_hda_ctl_add() takes the lower-bit subdev value as a valid NID.
 * 
 * Note that the subdevice field is cleared again before the real registration
 * in snd_hda_ctl_add(), so that this value won't appear in the outside.
 */
#define HDA_SUBDEV_NID_FLAG (1U << 31)
#define HDA_SUBDEV_AMP_FLAG (1U << 30)

/*
 * for mixer controls
 */
#define HDA_COMPOSE_AMP_VAL_OFS(nid,chs,idx,dir,ofs)        \
    ((nid) | ((chs)<<16) | ((dir)<<18) | ((idx)<<19) | ((ofs)<<23))
#define HDA_AMP_VAL_MIN_MUTE (1<<29)
#define HDA_COMPOSE_AMP_VAL(nid,chs,idx,dir) \
    HDA_COMPOSE_AMP_VAL_OFS(nid, chs, idx, dir, 0)
/* mono volume with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, dir, flags) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx,  \
      .subdevice = HDA_SUBDEV_AMP_FLAG, \
      .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
            SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
            SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \
      .info = snd_hda_mixer_amp_volume_info, \
      .get = snd_hda_mixer_amp_volume_get, \
      .put = snd_hda_mixer_amp_volume_put, \
      .tlv = { .c = snd_hda_mixer_amp_tlv },        \
      .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, dir) | flags }
/* stereo volume with index */
#define HDA_CODEC_VOLUME_IDX(xname, xcidx, nid, xindex, direction) \
    HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, 3, xindex, direction, 0)
/* mono volume */
#define HDA_CODEC_VOLUME_MONO(xname, nid, channel, xindex, direction) \
    HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, channel, xindex, direction, 0)
/* stereo volume */
#define HDA_CODEC_VOLUME(xname, nid, xindex, direction) \
    HDA_CODEC_VOLUME_MONO(xname, nid, 3, xindex, direction)
/* stereo volume with min=mute */
#define HDA_CODEC_VOLUME_MIN_MUTE(xname, nid, xindex, direction) \
    HDA_CODEC_VOLUME_MONO_IDX(xname, 0, nid, 3, xindex, direction, \
                  HDA_AMP_VAL_MIN_MUTE)
/* mono mute switch with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
      .subdevice = HDA_SUBDEV_AMP_FLAG, \
      .info = snd_hda_mixer_amp_switch_info, \
      .get = snd_hda_mixer_amp_switch_get, \
      .put = snd_hda_mixer_amp_switch_put, \
      .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
/* stereo mute switch with index */
#define HDA_CODEC_MUTE_IDX(xname, xcidx, nid, xindex, direction) \
    HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, 3, xindex, direction)
/* mono mute switch */
#define HDA_CODEC_MUTE_MONO(xname, nid, channel, xindex, direction) \
    HDA_CODEC_MUTE_MONO_IDX(xname, 0, nid, channel, xindex, direction)
/* stereo mute switch */
#define HDA_CODEC_MUTE(xname, nid, xindex, direction) \
    HDA_CODEC_MUTE_MONO(xname, nid, 3, xindex, direction)
#ifdef CONFIG_SND_HDA_INPUT_BEEP
/* special beep mono mute switch with index (index=0,1,...) (channel=1,2) */
#define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \
      .subdevice = HDA_SUBDEV_AMP_FLAG, \
      .info = snd_hda_mixer_amp_switch_info, \
      .get = snd_hda_mixer_amp_switch_get_beep, \
      .put = snd_hda_mixer_amp_switch_put_beep, \
      .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, xindex, direction) }
#else
/* no digital beep - just the standard one */
#define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, ch, xidx, dir) \
    HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, ch, xidx, dir)
#endif /* CONFIG_SND_HDA_INPUT_BEEP */
/* special beep mono mute switch */
#define HDA_CODEC_MUTE_BEEP_MONO(xname, nid, channel, xindex, direction) \
    HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, 0, nid, channel, xindex, direction)
/* special beep stereo mute switch */
#define HDA_CODEC_MUTE_BEEP(xname, nid, xindex, direction) \
    HDA_CODEC_MUTE_BEEP_MONO(xname, nid, 3, xindex, direction)

extern const char *snd_hda_pcm_type_name[];

int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *uinfo);
int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag,
              unsigned int size, unsigned int __user *tlv);
int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *uinfo);
int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol);
#ifdef CONFIG_SND_HDA_INPUT_BEEP
int snd_hda_mixer_amp_switch_get_beep(struct snd_kcontrol *kcontrol,
                      struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
                      struct snd_ctl_elem_value *ucontrol);
#endif
/* lowlevel accessor with caching; use carefully */
int snd_hda_codec_amp_read(struct hda_codec *codec, hda_nid_t nid, int ch,
               int direction, int index);
int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
                 int direction, int idx, int mask, int val);
int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
                 int dir, int idx, int mask, int val);
#ifdef CONFIG_PM
void snd_hda_codec_resume_amp(struct hda_codec *codec);
#endif

void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir,
                 unsigned int *tlv);
struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec,
                        const char *name);
int __snd_hda_add_vmaster(struct hda_codec *codec, char *name,
              unsigned int *tlv, const char * const *slaves,
              const char *suffix, bool init_slave_vol,
              struct snd_kcontrol **ctl_ret);
#define snd_hda_add_vmaster(codec, name, tlv, slaves, suffix) \
    __snd_hda_add_vmaster(codec, name, tlv, slaves, suffix, true, NULL)
int snd_hda_codec_reset(struct hda_codec *codec);

enum {
    HDA_VMUTE_OFF,
    HDA_VMUTE_ON,
    HDA_VMUTE_FOLLOW_MASTER,
};

struct hda_vmaster_mute_hook {
    /* below two fields must be filled by the caller of
     * snd_hda_add_vmaster_hook() beforehand
     */
    struct snd_kcontrol *sw_kctl;
    void (*hook)(void *, int);
    /* below are initialized automatically */
    unsigned int mute_mode; /* HDA_VMUTE_XXX */
    struct hda_codec *codec;
};

int snd_hda_add_vmaster_hook(struct hda_codec *codec,
                 struct hda_vmaster_mute_hook *hook,
                 bool expose_enum_ctl);
void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook);

/* amp value bits */
#define HDA_AMP_MUTE    0x80
#define HDA_AMP_UNMUTE  0x00
#define HDA_AMP_VOLMASK 0x7f

/* mono switch binding multiple inputs */
#define HDA_BIND_MUTE_MONO(xname, nid, channel, indices, direction) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = 0,  \
      .info = snd_hda_mixer_amp_switch_info, \
      .get = snd_hda_mixer_bind_switch_get, \
      .put = snd_hda_mixer_bind_switch_put, \
      .private_value = HDA_COMPOSE_AMP_VAL(nid, channel, indices, direction) }

/* stereo switch binding multiple inputs */
#define HDA_BIND_MUTE(xname,nid,indices,dir) \
    HDA_BIND_MUTE_MONO(xname,nid,3,indices,dir)

int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol);

/* more generic bound controls */
struct hda_ctl_ops {
    snd_kcontrol_info_t *info;
    snd_kcontrol_get_t *get;
    snd_kcontrol_put_t *put;
    snd_kcontrol_tlv_rw_t *tlv;
};

extern struct hda_ctl_ops snd_hda_bind_vol; /* for bind-volume with TLV */
extern struct hda_ctl_ops snd_hda_bind_sw;  /* for bind-switch */

struct hda_bind_ctls {
    struct hda_ctl_ops *ops;
    unsigned long values[];
};

int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_info *uinfo);
int snd_hda_mixer_bind_ctls_get(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_bind_ctls_put(struct snd_kcontrol *kcontrol,
                struct snd_ctl_elem_value *ucontrol);
int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag,
               unsigned int size, unsigned int __user *tlv);

#define HDA_BIND_VOL(xname, bindrec) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
      .name = xname, \
      .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |\
              SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
              SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK,\
      .info = snd_hda_mixer_bind_ctls_info,\
      .get =  snd_hda_mixer_bind_ctls_get,\
      .put = snd_hda_mixer_bind_ctls_put,\
      .tlv = { .c = snd_hda_mixer_bind_tlv },\
      .private_value = (long) (bindrec) }
#define HDA_BIND_SW(xname, bindrec) \
    { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
      .name = xname, \
      .info = snd_hda_mixer_bind_ctls_info,\
      .get =  snd_hda_mixer_bind_ctls_get,\
      .put = snd_hda_mixer_bind_ctls_put,\
      .private_value = (long) (bindrec) }

/*
 * SPDIF I/O
 */
int snd_hda_create_spdif_out_ctls(struct hda_codec *codec,
                  hda_nid_t associated_nid,
                  hda_nid_t cvt_nid);
int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid);

/*
 * input MUX helper
 */
#define HDA_MAX_NUM_INPUTS  16
struct hda_input_mux_item {
    char label[32];
    unsigned int index;
};
struct hda_input_mux {
    unsigned int num_items;
    struct hda_input_mux_item items[HDA_MAX_NUM_INPUTS];
};

int snd_hda_input_mux_info(const struct hda_input_mux *imux,
               struct snd_ctl_elem_info *uinfo);
int snd_hda_input_mux_put(struct hda_codec *codec,
              const struct hda_input_mux *imux,
              struct snd_ctl_elem_value *ucontrol, hda_nid_t nid,
              unsigned int *cur_val);
int snd_hda_add_imux_item(struct hda_input_mux *imux, const char *label,
              int index, int *type_index_ret);

/*
 * Channel mode helper
 */
struct hda_channel_mode {
    int channels;
    const struct hda_verb *sequence;
};

int snd_hda_ch_mode_info(struct hda_codec *codec,
             struct snd_ctl_elem_info *uinfo,
             const struct hda_channel_mode *chmode,
             int num_chmodes);
int snd_hda_ch_mode_get(struct hda_codec *codec,
            struct snd_ctl_elem_value *ucontrol,
            const struct hda_channel_mode *chmode,
            int num_chmodes,
            int max_channels);
int snd_hda_ch_mode_put(struct hda_codec *codec,
            struct snd_ctl_elem_value *ucontrol,
            const struct hda_channel_mode *chmode,
            int num_chmodes,
            int *max_channelsp);

/*
 * Multi-channel / digital-out PCM helper
 */

enum { HDA_FRONT, HDA_REAR, HDA_CLFE, HDA_SIDE }; /* index for dac_nidx */
enum { HDA_DIG_NONE, HDA_DIG_EXCLUSIVE, HDA_DIG_ANALOG_DUP }; /* dig_out_used */

#define HDA_MAX_OUTS    5

struct hda_multi_out {
    int num_dacs;       /* # of DACs, must be more than 1 */
    const hda_nid_t *dac_nids;  /* DAC list */
    hda_nid_t hp_nid;   /* optional DAC for HP, 0 when not exists */
    hda_nid_t hp_out_nid[HDA_MAX_OUTS]; /* DACs for multiple HPs */
    hda_nid_t extra_out_nid[HDA_MAX_OUTS];  /* other (e.g. speaker) DACs */
    hda_nid_t dig_out_nid;  /* digital out audio widget */
    const hda_nid_t *slave_dig_outs;
    int max_channels;   /* currently supported analog channels */
    int dig_out_used;   /* current usage of digital out (HDA_DIG_XXX) */
    int no_share_stream;    /* don't share a stream with multiple pins */
    int share_spdif;    /* share SPDIF pin */
    /* PCM information for both analog and SPDIF DACs */
    unsigned int analog_rates;
    unsigned int analog_maxbps;
    u64 analog_formats;
    unsigned int spdif_rates;
    unsigned int spdif_maxbps;
    u64 spdif_formats;
};

int snd_hda_create_spdif_share_sw(struct hda_codec *codec,
                  struct hda_multi_out *mout);
int snd_hda_multi_out_dig_open(struct hda_codec *codec,
                   struct hda_multi_out *mout);
int snd_hda_multi_out_dig_close(struct hda_codec *codec,
                struct hda_multi_out *mout);
int snd_hda_multi_out_dig_prepare(struct hda_codec *codec,
                  struct hda_multi_out *mout,
                  unsigned int stream_tag,
                  unsigned int format,
                  struct snd_pcm_substream *substream);
int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec,
                  struct hda_multi_out *mout);
int snd_hda_multi_out_analog_open(struct hda_codec *codec,
                  struct hda_multi_out *mout,
                  struct snd_pcm_substream *substream,
                  struct hda_pcm_stream *hinfo);
int snd_hda_multi_out_analog_prepare(struct hda_codec *codec,
                     struct hda_multi_out *mout,
                     unsigned int stream_tag,
                     unsigned int format,
                     struct snd_pcm_substream *substream);
int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec,
                     struct hda_multi_out *mout);

/*
 * generic codec parser
 */
#ifdef CONFIG_SND_HDA_GENERIC
int snd_hda_parse_generic_codec(struct hda_codec *codec);
#else
static inline int snd_hda_parse_generic_codec(struct hda_codec *codec)
{
    return -ENODEV;
}
#endif

/*
 * generic proc interface
 */
#ifdef CONFIG_PROC_FS
int snd_hda_codec_proc_new(struct hda_codec *codec);
#else
static inline int snd_hda_codec_proc_new(struct hda_codec *codec) { return 0; }
#endif

#define SND_PRINT_BITS_ADVISED_BUFSIZE  16
void snd_print_pcm_bits(int pcm, char *buf, int buflen);

/*
 * Misc
 */
int snd_hda_check_board_config(struct hda_codec *codec, int num_configs,
                   const char * const *modelnames,
                   const struct snd_pci_quirk *pci_list);
int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
                               int num_configs, const char * const *models,
                               const struct snd_pci_quirk *tbl);
int snd_hda_add_new_ctls(struct hda_codec *codec,
             const struct snd_kcontrol_new *knew);

/*
 * unsolicited event handler
 */

#define HDA_UNSOL_QUEUE_SIZE    64

struct hda_bus_unsolicited {
    /* ring buffer */
    u32 queue[HDA_UNSOL_QUEUE_SIZE * 2];
    unsigned int rp, wp;

    /* workqueue */
    struct work_struct work;
    struct hda_bus *bus;
};

/* helper macros to retrieve pin default-config values */
#define get_defcfg_connect(cfg) \
    ((cfg & AC_DEFCFG_PORT_CONN) >> AC_DEFCFG_PORT_CONN_SHIFT)
#define get_defcfg_association(cfg) \
    ((cfg & AC_DEFCFG_DEF_ASSOC) >> AC_DEFCFG_ASSOC_SHIFT)
#define get_defcfg_location(cfg) \
    ((cfg & AC_DEFCFG_LOCATION) >> AC_DEFCFG_LOCATION_SHIFT)
#define get_defcfg_sequence(cfg) \
    (cfg & AC_DEFCFG_SEQUENCE)
#define get_defcfg_device(cfg) \
    ((cfg & AC_DEFCFG_DEVICE) >> AC_DEFCFG_DEVICE_SHIFT)
#define get_defcfg_misc(cfg) \
    ((cfg & AC_DEFCFG_MISC) >> AC_DEFCFG_MISC_SHIFT)

/* amp values */
#define AMP_IN_MUTE(idx)    (0x7080 | ((idx)<<8))
#define AMP_IN_UNMUTE(idx)  (0x7000 | ((idx)<<8))
#define AMP_OUT_MUTE        0xb080
#define AMP_OUT_UNMUTE      0xb000
#define AMP_OUT_ZERO        0xb000
/* pinctl values */
#define PIN_IN          (AC_PINCTL_IN_EN)
#define PIN_VREFHIZ     (AC_PINCTL_IN_EN | AC_PINCTL_VREF_HIZ)
#define PIN_VREF50      (AC_PINCTL_IN_EN | AC_PINCTL_VREF_50)
#define PIN_VREFGRD     (AC_PINCTL_IN_EN | AC_PINCTL_VREF_GRD)
#define PIN_VREF80      (AC_PINCTL_IN_EN | AC_PINCTL_VREF_80)
#define PIN_VREF100     (AC_PINCTL_IN_EN | AC_PINCTL_VREF_100)
#define PIN_OUT         (AC_PINCTL_OUT_EN)
#define PIN_HP          (AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN)
#define PIN_HP_AMP      (AC_PINCTL_HP_EN)

unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin);
int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin,
             unsigned int val, bool cached);

static inline int
snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsigned int val)
{
    return _snd_hda_set_pin_ctl(codec, pin, val, false);
}

static inline int
snd_hda_set_pin_ctl_cache(struct hda_codec *codec, hda_nid_t pin,
              unsigned int val)
{
    return _snd_hda_set_pin_ctl(codec, pin, val, true);
}

/*
 * get widget capabilities
 */
static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
{
    if (nid < codec->start_nid ||
        nid >= codec->start_nid + codec->num_nodes)
        return 0;
    return codec->wcaps[nid - codec->start_nid];
}

/* get the widget type from widget capability bits */
static inline int get_wcaps_type(unsigned int wcaps)
{
    if (!wcaps)
        return -1; /* invalid type */
    return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
}

static inline unsigned int get_wcaps_channels(u32 wcaps)
{
    unsigned int chans;

    chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
    chans = ((chans << 1) | 1) + 1;

    return chans;
}

u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction);
int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir,
                  unsigned int caps);
u32 snd_hda_query_pin_caps(struct hda_codec *codec, hda_nid_t nid);
int snd_hda_override_pin_caps(struct hda_codec *codec, hda_nid_t nid,
                  unsigned int caps);

/* flags for hda_nid_item */
#define HDA_NID_ITEM_AMP    (1<<0)

struct hda_nid_item {
    struct snd_kcontrol *kctl;
    unsigned int index;
    hda_nid_t nid;
    unsigned short flags;
};

int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid,
            struct snd_kcontrol *kctl);
int snd_hda_add_nid(struct hda_codec *codec, struct snd_kcontrol *kctl,
            unsigned int index, hda_nid_t nid);
void snd_hda_ctls_clear(struct hda_codec *codec);

/*
 * hwdep interface
 */
#ifdef CONFIG_SND_HDA_HWDEP
int snd_hda_create_hwdep(struct hda_codec *codec);
#else
static inline int snd_hda_create_hwdep(struct hda_codec *codec) { return 0; }
#endif

#if defined(CONFIG_PM) && defined(CONFIG_SND_HDA_HWDEP)
int snd_hda_hwdep_add_power_sysfs(struct hda_codec *codec);
#else
static inline int snd_hda_hwdep_add_power_sysfs(struct hda_codec *codec)
{
    return 0;
}
#endif

#ifdef CONFIG_SND_HDA_RECONFIG
int snd_hda_hwdep_add_sysfs(struct hda_codec *codec);
#else
static inline int snd_hda_hwdep_add_sysfs(struct hda_codec *codec)
{
    return 0;
}
#endif

#ifdef CONFIG_SND_HDA_RECONFIG
const char *snd_hda_get_hint(struct hda_codec *codec, const char *key);
int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key);
#else
static inline
const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
{
    return NULL;
}

static inline
int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
{
    return -ENOENT;
}
#endif

/*
 * power-management
 */

void snd_hda_schedule_power_save(struct hda_codec *codec);

struct hda_amp_list {
    hda_nid_t nid;
    unsigned char dir;
    unsigned char idx;
};

struct hda_loopback_check {
    const struct hda_amp_list *amplist;
    int power_on;
};

int snd_hda_check_amp_list_power(struct hda_codec *codec,
                 struct hda_loopback_check *check,
                 hda_nid_t nid);

/*
 * AMP control callbacks
 */
/* retrieve parameters from private_value */
#define get_amp_nid_(pv)    ((pv) & 0xffff)
#define get_amp_nid(kc)     get_amp_nid_((kc)->private_value)
#define get_amp_channels(kc)    (((kc)->private_value >> 16) & 0x3)
#define get_amp_direction_(pv)  (((pv) >> 18) & 0x1)
#define get_amp_direction(kc)   get_amp_direction_((kc)->private_value)
#define get_amp_index(kc)   (((kc)->private_value >> 19) & 0xf)
#define get_amp_offset(kc)  (((kc)->private_value >> 23) & 0x3f)
#define get_amp_min_mute(kc)    (((kc)->private_value >> 29) & 0x1)

/*
 * CEA Short Audio Descriptor data
 */
struct cea_sad {
    int channels;
    int format;     /* (format == 0) indicates invalid SAD */
    int rates;
    int sample_bits;    /* for LPCM */
    int max_bitrate;    /* for AC3...ATRAC */
    int profile;    /* for WMAPRO */
};

#define ELD_FIXED_BYTES 20
#define ELD_MAX_SIZE    256
#define ELD_MAX_MNL 16
#define ELD_MAX_SAD 16

/*
 * ELD: EDID Like Data
 */
struct hdmi_eld {
    bool    monitor_present;
    bool    eld_valid;
    int eld_size;
    int baseline_len;
    int eld_ver;
    int cea_edid_ver;
    char    monitor_name[ELD_MAX_MNL + 1];
    int manufacture_id;
    int product_id;
    u64 port_id;
    int support_hdcp;
    int support_ai;
    int conn_type;
    int aud_synch_delay;
    int spk_alloc;
    int sad_count;
    struct cea_sad sad[ELD_MAX_SAD];
    /*
     * all fields above eld_buffer will be cleared before updating ELD
     */
    char    eld_buffer[ELD_MAX_SIZE];
#ifdef CONFIG_PROC_FS
    struct snd_info_entry *proc_entry;
#endif
};

int snd_hdmi_get_eld_size(struct hda_codec *codec, hda_nid_t nid);
int snd_hdmi_get_eld(struct hdmi_eld *, struct hda_codec *, hda_nid_t);
void snd_hdmi_show_eld(struct hdmi_eld *eld);
void snd_hdmi_eld_update_pcm_info(struct hdmi_eld *eld,
                  struct hda_pcm_stream *hinfo);

#ifdef CONFIG_PROC_FS
int snd_hda_eld_proc_new(struct hda_codec *codec, struct hdmi_eld *eld,
             int index);
void snd_hda_eld_proc_free(struct hda_codec *codec, struct hdmi_eld *eld);
#else
static inline int snd_hda_eld_proc_new(struct hda_codec *codec,
                       struct hdmi_eld *eld,
                       int index)
{
    return 0;
}
static inline void snd_hda_eld_proc_free(struct hda_codec *codec,
                     struct hdmi_eld *eld)
{
}
#endif

#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen);

#endif /* __SOUND_HDA_LOCAL_H */