ctmixer.c

Go to the documentation of this file.

#include "ctmixer.h"
#include "ctamixer.h"
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/asoundef.h>
#include <sound/pcm.h>
#include <sound/tlv.h>

enum CT_SUM_CTL {
    SUM_IN_F,
    SUM_IN_R,
    SUM_IN_C,
    SUM_IN_S,
    SUM_IN_F_C,

    NUM_CT_SUMS
};

enum CT_AMIXER_CTL {
    /* volume control mixers */
    AMIXER_MASTER_F,
    AMIXER_MASTER_R,
    AMIXER_MASTER_C,
    AMIXER_MASTER_S,
    AMIXER_PCM_F,
    AMIXER_PCM_R,
    AMIXER_PCM_C,
    AMIXER_PCM_S,
    AMIXER_SPDIFI,
    AMIXER_LINEIN,
    AMIXER_MIC,
    AMIXER_SPDIFO,
    AMIXER_WAVE_F,
    AMIXER_WAVE_R,
    AMIXER_WAVE_C,
    AMIXER_WAVE_S,
    AMIXER_MASTER_F_C,
    AMIXER_PCM_F_C,
    AMIXER_SPDIFI_C,
    AMIXER_LINEIN_C,
    AMIXER_MIC_C,

    /* this should always be the last one */
    NUM_CT_AMIXERS
};

enum CTALSA_MIXER_CTL {
    /* volume control mixers */
    MIXER_MASTER_P,
    MIXER_PCM_P,
    MIXER_LINEIN_P,
    MIXER_MIC_P,
    MIXER_SPDIFI_P,
    MIXER_SPDIFO_P,
    MIXER_WAVEF_P,
    MIXER_WAVER_P,
    MIXER_WAVEC_P,
    MIXER_WAVES_P,
    MIXER_MASTER_C,
    MIXER_PCM_C,
    MIXER_LINEIN_C,
    MIXER_MIC_C,
    MIXER_SPDIFI_C,

    /* switch control mixers */
    MIXER_PCM_C_S,
    MIXER_LINEIN_C_S,
    MIXER_MIC_C_S,
    MIXER_SPDIFI_C_S,
    MIXER_SPDIFO_P_S,
    MIXER_WAVEF_P_S,
    MIXER_WAVER_P_S,
    MIXER_WAVEC_P_S,
    MIXER_WAVES_P_S,
    MIXER_DIGITAL_IO_S,
    MIXER_IEC958_MASK,
    MIXER_IEC958_DEFAULT,
    MIXER_IEC958_STREAM,

    /* this should always be the last one */
    NUM_CTALSA_MIXERS
};

#define VOL_MIXER_START     MIXER_MASTER_P
#define VOL_MIXER_END       MIXER_SPDIFI_C
#define VOL_MIXER_NUM       (VOL_MIXER_END - VOL_MIXER_START + 1)
#define SWH_MIXER_START     MIXER_PCM_C_S
#define SWH_MIXER_END       MIXER_DIGITAL_IO_S
#define SWH_CAPTURE_START   MIXER_PCM_C_S
#define SWH_CAPTURE_END     MIXER_SPDIFI_C_S

#define CHN_NUM     2

struct ct_kcontrol_init {
    unsigned char ctl;
    char *name;
};

static struct ct_kcontrol_init
ct_kcontrol_init_table[NUM_CTALSA_MIXERS] = {
    [MIXER_MASTER_P] = {
        .ctl = 1,
        .name = "Master Playback Volume",
    },
    [MIXER_MASTER_C] = {
        .ctl = 1,
        .name = "Master Capture Volume",
    },
    [MIXER_PCM_P] = {
        .ctl = 1,
        .name = "PCM Playback Volume",
    },
    [MIXER_PCM_C] = {
        .ctl = 1,
        .name = "PCM Capture Volume",
    },
    [MIXER_LINEIN_P] = {
        .ctl = 1,
        .name = "Line Playback Volume",
    },
    [MIXER_LINEIN_C] = {
        .ctl = 1,
        .name = "Line Capture Volume",
    },
    [MIXER_MIC_P] = {
        .ctl = 1,
        .name = "Mic Playback Volume",
    },
    [MIXER_MIC_C] = {
        .ctl = 1,
        .name = "Mic Capture Volume",
    },
    [MIXER_SPDIFI_P] = {
        .ctl = 1,
        .name = "IEC958 Playback Volume",
    },
    [MIXER_SPDIFI_C] = {
        .ctl = 1,
        .name = "IEC958 Capture Volume",
    },
    [MIXER_SPDIFO_P] = {
        .ctl = 1,
        .name = "Digital Playback Volume",
    },
    [MIXER_WAVEF_P] = {
        .ctl = 1,
        .name = "Front Playback Volume",
    },
    [MIXER_WAVES_P] = {
        .ctl = 1,
        .name = "Side Playback Volume",
    },
    [MIXER_WAVEC_P] = {
        .ctl = 1,
        .name = "Center/LFE Playback Volume",
    },
    [MIXER_WAVER_P] = {
        .ctl = 1,
        .name = "Surround Playback Volume",
    },
    [MIXER_PCM_C_S] = {
        .ctl = 1,
        .name = "PCM Capture Switch",
    },
    [MIXER_LINEIN_C_S] = {
        .ctl = 1,
        .name = "Line Capture Switch",
    },
    [MIXER_MIC_C_S] = {
        .ctl = 1,
        .name = "Mic Capture Switch",
    },
    [MIXER_SPDIFI_C_S] = {
        .ctl = 1,
        .name = "IEC958 Capture Switch",
    },
    [MIXER_SPDIFO_P_S] = {
        .ctl = 1,
        .name = "Digital Playback Switch",
    },
    [MIXER_WAVEF_P_S] = {
        .ctl = 1,
        .name = "Front Playback Switch",
    },
    [MIXER_WAVES_P_S] = {
        .ctl = 1,
        .name = "Side Playback Switch",
    },
    [MIXER_WAVEC_P_S] = {
        .ctl = 1,
        .name = "Center/LFE Playback Switch",
    },
    [MIXER_WAVER_P_S] = {
        .ctl = 1,
        .name = "Surround Playback Switch",
    },
    [MIXER_DIGITAL_IO_S] = {
        .ctl = 0,
        .name = "Digit-IO Playback Switch",
    },
};

static void
ct_mixer_recording_select(struct ct_mixer *mixer, enum CT_AMIXER_CTL type);

static void
ct_mixer_recording_unselect(struct ct_mixer *mixer, enum CT_AMIXER_CTL type);

/* FIXME: this static looks like it would fail if more than one card was */
/* installed. */
static struct snd_kcontrol *kctls[2] = {NULL};

static enum CT_AMIXER_CTL get_amixer_index(enum CTALSA_MIXER_CTL alsa_index)
{
    switch (alsa_index) {
    case MIXER_MASTER_P:    return AMIXER_MASTER_F;
    case MIXER_MASTER_C:    return AMIXER_MASTER_F_C;
    case MIXER_PCM_P:   return AMIXER_PCM_F;
    case MIXER_PCM_C:
    case MIXER_PCM_C_S: return AMIXER_PCM_F_C;
    case MIXER_LINEIN_P:    return AMIXER_LINEIN;
    case MIXER_LINEIN_C:
    case MIXER_LINEIN_C_S:  return AMIXER_LINEIN_C;
    case MIXER_MIC_P:   return AMIXER_MIC;
    case MIXER_MIC_C:
    case MIXER_MIC_C_S: return AMIXER_MIC_C;
    case MIXER_SPDIFI_P:    return AMIXER_SPDIFI;
    case MIXER_SPDIFI_C:
    case MIXER_SPDIFI_C_S:  return AMIXER_SPDIFI_C;
    case MIXER_SPDIFO_P:    return AMIXER_SPDIFO;
    case MIXER_WAVEF_P: return AMIXER_WAVE_F;
    case MIXER_WAVES_P: return AMIXER_WAVE_S;
    case MIXER_WAVEC_P: return AMIXER_WAVE_C;
    case MIXER_WAVER_P: return AMIXER_WAVE_R;
    default:        return NUM_CT_AMIXERS;
    }
}

static enum CT_AMIXER_CTL get_recording_amixer(enum CT_AMIXER_CTL index)
{
    switch (index) {
    case AMIXER_MASTER_F:   return AMIXER_MASTER_F_C;
    case AMIXER_PCM_F:  return AMIXER_PCM_F_C;
    case AMIXER_SPDIFI: return AMIXER_SPDIFI_C;
    case AMIXER_LINEIN: return AMIXER_LINEIN_C;
    case AMIXER_MIC:    return AMIXER_MIC_C;
    default:        return NUM_CT_AMIXERS;
    }
}

static unsigned char
get_switch_state(struct ct_mixer *mixer, enum CTALSA_MIXER_CTL type)
{
    return (mixer->switch_state & (0x1 << (type - SWH_MIXER_START)))
        ? 1 : 0;
}

static void
set_switch_state(struct ct_mixer *mixer,
         enum CTALSA_MIXER_CTL type, unsigned char state)
{
    if (state)
        mixer->switch_state |= (0x1 << (type - SWH_MIXER_START));
    else
        mixer->switch_state &= ~(0x1 << (type - SWH_MIXER_START));
}

#if 0 /* not used */
/* Map integer value ranging from 0 to 65535 to 14-bit float value ranging
 * from 2^-6 to (1+1023/1024) */
static unsigned int uint16_to_float14(unsigned int x)
{
    unsigned int i;

    if (x < 17)
        return 0;

    x *= 2031;
    x /= 65535;
    x += 16;

    /* i <= 6 */
    for (i = 0; !(x & 0x400); i++)
        x <<= 1;

    x = (((7 - i) & 0x7) << 10) | (x & 0x3ff);

    return x;
}

static unsigned int float14_to_uint16(unsigned int x)
{
    unsigned int e;

    if (!x)
        return x;

    e = (x >> 10) & 0x7;
    x &= 0x3ff;
    x += 1024;
    x >>= (7 - e);
    x -= 16;
    x *= 65535;
    x /= 2031;

    return x;
}
#endif /* not used */

#define VOL_SCALE   0x1c
#define VOL_MAX     0x100

static const DECLARE_TLV_DB_SCALE(ct_vol_db_scale, -6400, 25, 1);

static int ct_alsa_mix_volume_info(struct snd_kcontrol *kcontrol,
                   struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
    uinfo->count = 2;
    uinfo->value.integer.min = 0;
    uinfo->value.integer.max = VOL_MAX;

    return 0;
}

static int ct_alsa_mix_volume_get(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    enum CT_AMIXER_CTL type = get_amixer_index(kcontrol->private_value);
    struct amixer *amixer;
    int i, val;

    for (i = 0; i < 2; i++) {
        amixer = ((struct ct_mixer *)atc->mixer)->
                        amixers[type*CHN_NUM+i];
        val = amixer->ops->get_scale(amixer) / VOL_SCALE;
        if (val < 0)
            val = 0;
        else if (val > VOL_MAX)
            val = VOL_MAX;
        ucontrol->value.integer.value[i] = val;
    }

    return 0;
}

static int ct_alsa_mix_volume_put(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    struct ct_mixer *mixer = atc->mixer;
    enum CT_AMIXER_CTL type = get_amixer_index(kcontrol->private_value);
    struct amixer *amixer;
    int i, j, val, oval, change = 0;

    for (i = 0; i < 2; i++) {
        val = ucontrol->value.integer.value[i];
        if (val < 0)
            val = 0;
        else if (val > VOL_MAX)
            val = VOL_MAX;
        val *= VOL_SCALE;
        amixer = mixer->amixers[type*CHN_NUM+i];
        oval = amixer->ops->get_scale(amixer);
        if (val != oval) {
            amixer->ops->set_scale(amixer, val);
            amixer->ops->commit_write(amixer);
            change = 1;
            /* Synchronize Master/PCM playback AMIXERs. */
            if (AMIXER_MASTER_F == type || AMIXER_PCM_F == type) {
                for (j = 1; j < 4; j++) {
                    amixer = mixer->
                        amixers[(type+j)*CHN_NUM+i];
                    amixer->ops->set_scale(amixer, val);
                    amixer->ops->commit_write(amixer);
                }
            }
        }
    }

    return change;
}

static struct snd_kcontrol_new vol_ctl = {
    .access     = SNDRV_CTL_ELEM_ACCESS_READWRITE |
              SNDRV_CTL_ELEM_ACCESS_TLV_READ,
    .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
    .info       = ct_alsa_mix_volume_info,
    .get        = ct_alsa_mix_volume_get,
    .put        = ct_alsa_mix_volume_put,
    .tlv        = { .p =  ct_vol_db_scale },
};

static int output_switch_info(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *info)
{
    static const char *const names[3] = {
      "FP Headphones", "Headphones", "Speakers"
    };

    return snd_ctl_enum_info(info, 1, 3, names);
}

static int output_switch_get(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    ucontrol->value.enumerated.item[0] = atc->output_switch_get(atc);
    return 0;
}

static int output_switch_put(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    if (ucontrol->value.enumerated.item[0] > 2)
        return -EINVAL;
    return atc->output_switch_put(atc, ucontrol->value.enumerated.item[0]);
}

static struct snd_kcontrol_new output_ctl = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Analog Output Playback Enum",
    .info = output_switch_info,
    .get = output_switch_get,
    .put = output_switch_put,
};

static int mic_source_switch_info(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_info *info)
{
    static const char *const names[3] = {
      "Mic", "FP Mic", "Aux"
    };

    return snd_ctl_enum_info(info, 1, 3, names);
}

static int mic_source_switch_get(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    ucontrol->value.enumerated.item[0] = atc->mic_source_switch_get(atc);
    return 0;
}

static int mic_source_switch_put(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    if (ucontrol->value.enumerated.item[0] > 2)
        return -EINVAL;
    return atc->mic_source_switch_put(atc,
                    ucontrol->value.enumerated.item[0]);
}

static struct snd_kcontrol_new mic_source_ctl = {
    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
    .name = "Mic Source Capture Enum",
    .info = mic_source_switch_info,
    .get = mic_source_switch_get,
    .put = mic_source_switch_put,
};

static void
do_line_mic_switch(struct ct_atc *atc, enum CTALSA_MIXER_CTL type)
{

    if (MIXER_LINEIN_C_S == type) {
        atc->select_line_in(atc);
        set_switch_state(atc->mixer, MIXER_MIC_C_S, 0);
        snd_ctl_notify(atc->card, SNDRV_CTL_EVENT_MASK_VALUE,
                            &kctls[1]->id);
    } else if (MIXER_MIC_C_S == type) {
        atc->select_mic_in(atc);
        set_switch_state(atc->mixer, MIXER_LINEIN_C_S, 0);
        snd_ctl_notify(atc->card, SNDRV_CTL_EVENT_MASK_VALUE,
                            &kctls[0]->id);
    }
}

static void
do_digit_io_switch(struct ct_atc *atc, int state)
{
    struct ct_mixer *mixer = atc->mixer;

    if (state) {
        atc->select_digit_io(atc);
        atc->spdif_out_unmute(atc,
                get_switch_state(mixer, MIXER_SPDIFO_P_S));
        atc->spdif_in_unmute(atc, 1);
        atc->line_in_unmute(atc, 0);
        return;
    }

    if (get_switch_state(mixer, MIXER_LINEIN_C_S))
        atc->select_line_in(atc);
    else if (get_switch_state(mixer, MIXER_MIC_C_S))
        atc->select_mic_in(atc);

    atc->spdif_out_unmute(atc, 0);
    atc->spdif_in_unmute(atc, 0);
    atc->line_in_unmute(atc, 1);
    return;
}

static void do_switch(struct ct_atc *atc, enum CTALSA_MIXER_CTL type, int state)
{
    struct ct_mixer *mixer = atc->mixer;
    struct capabilities cap = atc->capabilities(atc);

    /* Do changes in mixer. */
    if ((SWH_CAPTURE_START <= type) && (SWH_CAPTURE_END >= type)) {
        if (state) {
            ct_mixer_recording_select(mixer,
                          get_amixer_index(type));
        } else {
            ct_mixer_recording_unselect(mixer,
                            get_amixer_index(type));
        }
    }
    /* Do changes out of mixer. */
    if (!cap.dedicated_mic &&
        (MIXER_LINEIN_C_S == type || MIXER_MIC_C_S == type)) {
        if (state)
            do_line_mic_switch(atc, type);
        atc->line_in_unmute(atc, state);
    } else if (cap.dedicated_mic && (MIXER_LINEIN_C_S == type))
        atc->line_in_unmute(atc, state);
    else if (cap.dedicated_mic && (MIXER_MIC_C_S == type))
        atc->mic_unmute(atc, state);
    else if (MIXER_SPDIFI_C_S == type)
        atc->spdif_in_unmute(atc, state);
    else if (MIXER_WAVEF_P_S == type)
        atc->line_front_unmute(atc, state);
    else if (MIXER_WAVES_P_S == type)
        atc->line_surround_unmute(atc, state);
    else if (MIXER_WAVEC_P_S == type)
        atc->line_clfe_unmute(atc, state);
    else if (MIXER_WAVER_P_S == type)
        atc->line_rear_unmute(atc, state);
    else if (MIXER_SPDIFO_P_S == type)
        atc->spdif_out_unmute(atc, state);
    else if (MIXER_DIGITAL_IO_S == type)
        do_digit_io_switch(atc, state);

    return;
}

static int ct_alsa_mix_switch_info(struct snd_kcontrol *kcontrol,
                   struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
    uinfo->count = 1;
    uinfo->value.integer.min = 0;
    uinfo->value.integer.max = 1;
    uinfo->value.integer.step = 1;

    return 0;
}

static int ct_alsa_mix_switch_get(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
    struct ct_mixer *mixer =
        ((struct ct_atc *)snd_kcontrol_chip(kcontrol))->mixer;
    enum CTALSA_MIXER_CTL type = kcontrol->private_value;

    ucontrol->value.integer.value[0] = get_switch_state(mixer, type);
    return 0;
}

static int ct_alsa_mix_switch_put(struct snd_kcontrol *kcontrol,
                  struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    struct ct_mixer *mixer = atc->mixer;
    enum CTALSA_MIXER_CTL type = kcontrol->private_value;
    int state;

    state = ucontrol->value.integer.value[0];
    if (get_switch_state(mixer, type) == state)
        return 0;

    set_switch_state(mixer, type, state);
    do_switch(atc, type, state);

    return 1;
}

static struct snd_kcontrol_new swh_ctl = {
    .access     = SNDRV_CTL_ELEM_ACCESS_READWRITE,
    .iface      = SNDRV_CTL_ELEM_IFACE_MIXER,
    .info       = ct_alsa_mix_switch_info,
    .get        = ct_alsa_mix_switch_get,
    .put        = ct_alsa_mix_switch_put
};

static int ct_spdif_info(struct snd_kcontrol *kcontrol,
             struct snd_ctl_elem_info *uinfo)
{
    uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
    uinfo->count = 1;
    return 0;
}

static int ct_spdif_get_mask(struct snd_kcontrol *kcontrol,
                 struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.iec958.status[0] = 0xff;
    ucontrol->value.iec958.status[1] = 0xff;
    ucontrol->value.iec958.status[2] = 0xff;
    ucontrol->value.iec958.status[3] = 0xff;
    return 0;
}

static int ct_spdif_get(struct snd_kcontrol *kcontrol,
            struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    unsigned int status;

    atc->spdif_out_get_status(atc, &status);

    if (status == 0)
        status = SNDRV_PCM_DEFAULT_CON_SPDIF;

    ucontrol->value.iec958.status[0] = (status >> 0) & 0xff;
    ucontrol->value.iec958.status[1] = (status >> 8) & 0xff;
    ucontrol->value.iec958.status[2] = (status >> 16) & 0xff;
    ucontrol->value.iec958.status[3] = (status >> 24) & 0xff;

    return 0;
}

static int ct_spdif_put(struct snd_kcontrol *kcontrol,
            struct snd_ctl_elem_value *ucontrol)
{
    struct ct_atc *atc = snd_kcontrol_chip(kcontrol);
    int change;
    unsigned int status, old_status;

    status = (ucontrol->value.iec958.status[0] << 0) |
         (ucontrol->value.iec958.status[1] << 8) |
         (ucontrol->value.iec958.status[2] << 16) |
         (ucontrol->value.iec958.status[3] << 24);

    atc->spdif_out_get_status(atc, &old_status);
    change = (old_status != status);
    if (change)
        atc->spdif_out_set_status(atc, status);

    return change;
}

static struct snd_kcontrol_new iec958_mask_ctl = {
    .access     = SNDRV_CTL_ELEM_ACCESS_READ,
    .iface      = SNDRV_CTL_ELEM_IFACE_PCM,
    .name       = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
    .count      = 1,
    .info       = ct_spdif_info,
    .get        = ct_spdif_get_mask,
    .private_value  = MIXER_IEC958_MASK
};

static struct snd_kcontrol_new iec958_default_ctl = {
    .iface      = SNDRV_CTL_ELEM_IFACE_PCM,
    .name       = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
    .count      = 1,
    .info       = ct_spdif_info,
    .get        = ct_spdif_get,
    .put        = ct_spdif_put,
    .private_value  = MIXER_IEC958_DEFAULT
};

static struct snd_kcontrol_new iec958_ctl = {
    .access     = SNDRV_CTL_ELEM_ACCESS_READWRITE,
    .iface      = SNDRV_CTL_ELEM_IFACE_PCM,
    .name       = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
    .count      = 1,
    .info       = ct_spdif_info,
    .get        = ct_spdif_get,
    .put        = ct_spdif_put,
    .private_value  = MIXER_IEC958_STREAM
};

#define NUM_IEC958_CTL 3

static int
ct_mixer_kcontrol_new(struct ct_mixer *mixer, struct snd_kcontrol_new *new)
{
    struct snd_kcontrol *kctl;
    int err;

    kctl = snd_ctl_new1(new, mixer->atc);
    if (!kctl)
        return -ENOMEM;

    if (SNDRV_CTL_ELEM_IFACE_PCM == kctl->id.iface)
        kctl->id.device = IEC958;

    err = snd_ctl_add(mixer->atc->card, kctl);
    if (err)
        return err;

    switch (new->private_value) {
    case MIXER_LINEIN_C_S:
        kctls[0] = kctl; break;
    case MIXER_MIC_C_S:
        kctls[1] = kctl; break;
    default:
        break;
    }

    return 0;
}

static int ct_mixer_kcontrols_create(struct ct_mixer *mixer)
{
    enum CTALSA_MIXER_CTL type;
    struct ct_atc *atc = mixer->atc;
    struct capabilities cap = atc->capabilities(atc);
    int err;

    /* Create snd kcontrol instances on demand */
    for (type = VOL_MIXER_START; type <= VOL_MIXER_END; type++) {
        if (ct_kcontrol_init_table[type].ctl) {
            vol_ctl.name = ct_kcontrol_init_table[type].name;
            vol_ctl.private_value = (unsigned long)type;
            err = ct_mixer_kcontrol_new(mixer, &vol_ctl);
            if (err)
                return err;
        }
    }

    ct_kcontrol_init_table[MIXER_DIGITAL_IO_S].ctl = cap.digit_io_switch;

    for (type = SWH_MIXER_START; type <= SWH_MIXER_END; type++) {
        if (ct_kcontrol_init_table[type].ctl) {
            swh_ctl.name = ct_kcontrol_init_table[type].name;
            swh_ctl.private_value = (unsigned long)type;
            err = ct_mixer_kcontrol_new(mixer, &swh_ctl);
            if (err)
                return err;
        }
    }

    err = ct_mixer_kcontrol_new(mixer, &iec958_mask_ctl);
    if (err)
        return err;

    err = ct_mixer_kcontrol_new(mixer, &iec958_default_ctl);
    if (err)
        return err;

    err = ct_mixer_kcontrol_new(mixer, &iec958_ctl);
    if (err)
        return err;

    if (cap.output_switch) {
        err = ct_mixer_kcontrol_new(mixer, &output_ctl);
        if (err)
            return err;
    }

    if (cap.mic_source_switch) {
        err = ct_mixer_kcontrol_new(mixer, &mic_source_ctl);
        if (err)
            return err;
    }
    atc->line_front_unmute(atc, 1);
    set_switch_state(mixer, MIXER_WAVEF_P_S, 1);
    atc->line_surround_unmute(atc, 0);
    set_switch_state(mixer, MIXER_WAVES_P_S, 0);
    atc->line_clfe_unmute(atc, 0);
    set_switch_state(mixer, MIXER_WAVEC_P_S, 0);
    atc->line_rear_unmute(atc, 0);
    set_switch_state(mixer, MIXER_WAVER_P_S, 0);
    atc->spdif_out_unmute(atc, 0);
    set_switch_state(mixer, MIXER_SPDIFO_P_S, 0);
    atc->line_in_unmute(atc, 0);
    if (cap.dedicated_mic)
        atc->mic_unmute(atc, 0);
    atc->spdif_in_unmute(atc, 0);
    set_switch_state(mixer, MIXER_PCM_C_S, 0);
    set_switch_state(mixer, MIXER_LINEIN_C_S, 0);
    set_switch_state(mixer, MIXER_SPDIFI_C_S, 0);

    return 0;
}

static void
ct_mixer_recording_select(struct ct_mixer *mixer, enum CT_AMIXER_CTL type)
{
    struct amixer *amix_d;
    struct sum *sum_c;
    int i;

    for (i = 0; i < 2; i++) {
        amix_d = mixer->amixers[type*CHN_NUM+i];
        sum_c = mixer->sums[SUM_IN_F_C*CHN_NUM+i];
        amix_d->ops->set_sum(amix_d, sum_c);
        amix_d->ops->commit_write(amix_d);
    }
}

static void
ct_mixer_recording_unselect(struct ct_mixer *mixer, enum CT_AMIXER_CTL type)
{
    struct amixer *amix_d;
    int i;

    for (i = 0; i < 2; i++) {
        amix_d = mixer->amixers[type*CHN_NUM+i];
        amix_d->ops->set_sum(amix_d, NULL);
        amix_d->ops->commit_write(amix_d);
    }
}

static int ct_mixer_get_resources(struct ct_mixer *mixer)
{
    struct sum_mgr *sum_mgr;
    struct sum *sum;
    struct sum_desc sum_desc = {0};
    struct amixer_mgr *amixer_mgr;
    struct amixer *amixer;
    struct amixer_desc am_desc = {0};
    int err;
    int i;

    /* Allocate sum resources for mixer obj */
    sum_mgr = (struct sum_mgr *)mixer->atc->rsc_mgrs[SUM];
    sum_desc.msr = mixer->atc->msr;
    for (i = 0; i < (NUM_CT_SUMS * CHN_NUM); i++) {
        err = sum_mgr->get_sum(sum_mgr, &sum_desc, &sum);
        if (err) {
            printk(KERN_ERR "ctxfi:Failed to get sum resources for "
                      "front output!\n");
            break;
        }
        mixer->sums[i] = sum;
    }
    if (err)
        goto error1;

    /* Allocate amixer resources for mixer obj */
    amixer_mgr = (struct amixer_mgr *)mixer->atc->rsc_mgrs[AMIXER];
    am_desc.msr = mixer->atc->msr;
    for (i = 0; i < (NUM_CT_AMIXERS * CHN_NUM); i++) {
        err = amixer_mgr->get_amixer(amixer_mgr, &am_desc, &amixer);
        if (err) {
            printk(KERN_ERR "ctxfi:Failed to get amixer resources "
                   "for mixer obj!\n");
            break;
        }
        mixer->amixers[i] = amixer;
    }
    if (err)
        goto error2;

    return 0;

error2:
    for (i = 0; i < (NUM_CT_AMIXERS * CHN_NUM); i++) {
        if (NULL != mixer->amixers[i]) {
            amixer = mixer->amixers[i];
            amixer_mgr->put_amixer(amixer_mgr, amixer);
            mixer->amixers[i] = NULL;
        }
    }
error1:
    for (i = 0; i < (NUM_CT_SUMS * CHN_NUM); i++) {
        if (NULL != mixer->sums[i]) {
            sum_mgr->put_sum(sum_mgr, (struct sum *)mixer->sums[i]);
            mixer->sums[i] = NULL;
        }
    }

    return err;
}

static int ct_mixer_get_mem(struct ct_mixer **rmixer)
{
    struct ct_mixer *mixer;
    int err;

    *rmixer = NULL;
    /* Allocate mem for mixer obj */
    mixer = kzalloc(sizeof(*mixer), GFP_KERNEL);
    if (!mixer)
        return -ENOMEM;

    mixer->amixers = kzalloc(sizeof(void *)*(NUM_CT_AMIXERS*CHN_NUM),
                 GFP_KERNEL);
    if (!mixer->amixers) {
        err = -ENOMEM;
        goto error1;
    }
    mixer->sums = kzalloc(sizeof(void *)*(NUM_CT_SUMS*CHN_NUM), GFP_KERNEL);
    if (!mixer->sums) {
        err = -ENOMEM;
        goto error2;
    }

    *rmixer = mixer;
    return 0;

error2:
    kfree(mixer->amixers);
error1:
    kfree(mixer);
    return err;
}

static int ct_mixer_topology_build(struct ct_mixer *mixer)
{
    struct sum *sum;
    struct amixer *amix_d, *amix_s;
    enum CT_AMIXER_CTL i, j;

    /* Build topology from destination to source */

    /* Set up Master mixer */
    for (i = AMIXER_MASTER_F, j = SUM_IN_F;
                    i <= AMIXER_MASTER_S; i++, j++) {
        amix_d = mixer->amixers[i*CHN_NUM];
        sum = mixer->sums[j*CHN_NUM];
        amix_d->ops->setup(amix_d, &sum->rsc, INIT_VOL, NULL);
        amix_d = mixer->amixers[i*CHN_NUM+1];
        sum = mixer->sums[j*CHN_NUM+1];
        amix_d->ops->setup(amix_d, &sum->rsc, INIT_VOL, NULL);
    }

    /* Set up Wave-out mixer */
    for (i = AMIXER_WAVE_F, j = AMIXER_MASTER_F;
                    i <= AMIXER_WAVE_S; i++, j++) {
        amix_d = mixer->amixers[i*CHN_NUM];
        amix_s = mixer->amixers[j*CHN_NUM];
        amix_d->ops->setup(amix_d, &amix_s->rsc, INIT_VOL, NULL);
        amix_d = mixer->amixers[i*CHN_NUM+1];
        amix_s = mixer->amixers[j*CHN_NUM+1];
        amix_d->ops->setup(amix_d, &amix_s->rsc, INIT_VOL, NULL);
    }

    /* Set up S/PDIF-out mixer */
    amix_d = mixer->amixers[AMIXER_SPDIFO*CHN_NUM];
    amix_s = mixer->amixers[AMIXER_MASTER_F*CHN_NUM];
    amix_d->ops->setup(amix_d, &amix_s->rsc, INIT_VOL, NULL);
    amix_d = mixer->amixers[AMIXER_SPDIFO*CHN_NUM+1];
    amix_s = mixer->amixers[AMIXER_MASTER_F*CHN_NUM+1];
    amix_d->ops->setup(amix_d, &amix_s->rsc, INIT_VOL, NULL);

    /* Set up PCM-in mixer */
    for (i = AMIXER_PCM_F, j = SUM_IN_F; i <= AMIXER_PCM_S; i++, j++) {
        amix_d = mixer->amixers[i*CHN_NUM];
        sum = mixer->sums[j*CHN_NUM];
        amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
        amix_d = mixer->amixers[i*CHN_NUM+1];
        sum = mixer->sums[j*CHN_NUM+1];
        amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    }

    /* Set up Line-in mixer */
    amix_d = mixer->amixers[AMIXER_LINEIN*CHN_NUM];
    sum = mixer->sums[SUM_IN_F*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_LINEIN*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up Mic-in mixer */
    amix_d = mixer->amixers[AMIXER_MIC*CHN_NUM];
    sum = mixer->sums[SUM_IN_F*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_MIC*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up S/PDIF-in mixer */
    amix_d = mixer->amixers[AMIXER_SPDIFI*CHN_NUM];
    sum = mixer->sums[SUM_IN_F*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_SPDIFI*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up Master recording mixer */
    amix_d = mixer->amixers[AMIXER_MASTER_F_C*CHN_NUM];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM];
    amix_d->ops->setup(amix_d, &sum->rsc, INIT_VOL, NULL);
    amix_d = mixer->amixers[AMIXER_MASTER_F_C*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM+1];
    amix_d->ops->setup(amix_d, &sum->rsc, INIT_VOL, NULL);

    /* Set up PCM-in recording mixer */
    amix_d = mixer->amixers[AMIXER_PCM_F_C*CHN_NUM];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_PCM_F_C*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up Line-in recording mixer */
    amix_d = mixer->amixers[AMIXER_LINEIN_C*CHN_NUM];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_LINEIN_C*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up Mic-in recording mixer */
    amix_d = mixer->amixers[AMIXER_MIC_C*CHN_NUM];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_MIC_C*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    /* Set up S/PDIF-in recording mixer */
    amix_d = mixer->amixers[AMIXER_SPDIFI_C*CHN_NUM];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);
    amix_d = mixer->amixers[AMIXER_SPDIFI_C*CHN_NUM+1];
    sum = mixer->sums[SUM_IN_F_C*CHN_NUM+1];
    amix_d->ops->setup(amix_d, NULL, INIT_VOL, sum);

    return 0;
}

static int mixer_set_input_port(struct amixer *amixer, struct rsc *rsc)
{
    amixer->ops->set_input(amixer, rsc);
    amixer->ops->commit_write(amixer);

    return 0;
}

static enum CT_AMIXER_CTL port_to_amixer(enum MIXER_PORT_T type)
{
    switch (type) {
    case MIX_WAVE_FRONT:    return AMIXER_WAVE_F;
    case MIX_WAVE_SURROUND: return AMIXER_WAVE_S;
    case MIX_WAVE_CENTLFE:  return AMIXER_WAVE_C;
    case MIX_WAVE_REAR: return AMIXER_WAVE_R;
    case MIX_PCMO_FRONT:    return AMIXER_MASTER_F_C;
    case MIX_SPDIF_OUT: return AMIXER_SPDIFO;
    case MIX_LINE_IN:   return AMIXER_LINEIN;
    case MIX_MIC_IN:    return AMIXER_MIC;
    case MIX_SPDIF_IN:  return AMIXER_SPDIFI;
    case MIX_PCMI_FRONT:    return AMIXER_PCM_F;
    case MIX_PCMI_SURROUND: return AMIXER_PCM_S;
    case MIX_PCMI_CENTLFE:  return AMIXER_PCM_C;
    case MIX_PCMI_REAR: return AMIXER_PCM_R;
    default:        return 0;
    }
}

static int mixer_get_output_ports(struct ct_mixer *mixer,
                  enum MIXER_PORT_T type,
                  struct rsc **rleft, struct rsc **rright)
{
    enum CT_AMIXER_CTL amix = port_to_amixer(type);

    if (NULL != rleft)
        *rleft = &((struct amixer *)mixer->amixers[amix*CHN_NUM])->rsc;

    if (NULL != rright)
        *rright =
            &((struct amixer *)mixer->amixers[amix*CHN_NUM+1])->rsc;

    return 0;
}

static int mixer_set_input_left(struct ct_mixer *mixer,
                enum MIXER_PORT_T type, struct rsc *rsc)
{
    enum CT_AMIXER_CTL amix = port_to_amixer(type);

    mixer_set_input_port(mixer->amixers[amix*CHN_NUM], rsc);
    amix = get_recording_amixer(amix);
    if (amix < NUM_CT_AMIXERS)
        mixer_set_input_port(mixer->amixers[amix*CHN_NUM], rsc);

    return 0;
}

static int
mixer_set_input_right(struct ct_mixer *mixer,
              enum MIXER_PORT_T type, struct rsc *rsc)
{
    enum CT_AMIXER_CTL amix = port_to_amixer(type);

    mixer_set_input_port(mixer->amixers[amix*CHN_NUM+1], rsc);
    amix = get_recording_amixer(amix);
    if (amix < NUM_CT_AMIXERS)
        mixer_set_input_port(mixer->amixers[amix*CHN_NUM+1], rsc);

    return 0;
}

#ifdef CONFIG_PM_SLEEP
static int mixer_resume(struct ct_mixer *mixer)
{
    int i, state;
    struct amixer *amixer;

    /* resume topology and volume gain. */
    for (i = 0; i < NUM_CT_AMIXERS*CHN_NUM; i++) {
        amixer = mixer->amixers[i];
        amixer->ops->commit_write(amixer);
    }

    /* resume switch state. */
    for (i = SWH_MIXER_START; i <= SWH_MIXER_END; i++) {
        state = get_switch_state(mixer, i);
        do_switch(mixer->atc, i, state);
    }

    return 0;
}
#endif

int ct_mixer_destroy(struct ct_mixer *mixer)
{
    struct sum_mgr *sum_mgr = (struct sum_mgr *)mixer->atc->rsc_mgrs[SUM];
    struct amixer_mgr *amixer_mgr =
            (struct amixer_mgr *)mixer->atc->rsc_mgrs[AMIXER];
    struct amixer *amixer;
    int i = 0;

    /* Release amixer resources */
    for (i = 0; i < (NUM_CT_AMIXERS * CHN_NUM); i++) {
        if (NULL != mixer->amixers[i]) {
            amixer = mixer->amixers[i];
            amixer_mgr->put_amixer(amixer_mgr, amixer);
        }
    }

    /* Release sum resources */
    for (i = 0; i < (NUM_CT_SUMS * CHN_NUM); i++) {
        if (NULL != mixer->sums[i])
            sum_mgr->put_sum(sum_mgr, (struct sum *)mixer->sums[i]);
    }

    /* Release mem assigned to mixer object */
    kfree(mixer->sums);
    kfree(mixer->amixers);
    kfree(mixer);

    return 0;
}

int ct_mixer_create(struct ct_atc *atc, struct ct_mixer **rmixer)
{
    struct ct_mixer *mixer;
    int err;

    *rmixer = NULL;

    /* Allocate mem for mixer obj */
    err = ct_mixer_get_mem(&mixer);
    if (err)
        return err;

    mixer->switch_state = 0;
    mixer->atc = atc;
    /* Set operations */
    mixer->get_output_ports = mixer_get_output_ports;
    mixer->set_input_left = mixer_set_input_left;
    mixer->set_input_right = mixer_set_input_right;
#ifdef CONFIG_PM_SLEEP
    mixer->resume = mixer_resume;
#endif

    /* Allocate chip resources for mixer obj */
    err = ct_mixer_get_resources(mixer);
    if (err)
        goto error;

    /* Build internal mixer topology */
    ct_mixer_topology_build(mixer);

    *rmixer = mixer;

    return 0;

error:
    ct_mixer_destroy(mixer);
    return err;
}

int ct_alsa_mix_create(struct ct_atc *atc,
               enum CTALSADEVS device,
               const char *device_name)
{
    int err;

    /* Create snd kcontrol instances on demand */
    /* vol_ctl.device = swh_ctl.device = device; */ /* better w/ device 0 */
    err = ct_mixer_kcontrols_create((struct ct_mixer *)atc->mixer);
    if (err)
        return err;

    strcpy(atc->card->mixername, device_name);

    return 0;
}