ctatc.c

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#include "ctatc.h"
#include "ctpcm.h"
#include "ctmixer.h"
#include "ctsrc.h"
#include "ctamixer.h"
#include "ctdaio.h"
#include "cttimer.h"
#include <linux/delay.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/control.h>
#include <sound/asoundef.h>

#define MONO_SUM_SCALE  0x19a8  /* 2^(-0.5) in 14-bit floating format */
#define MAX_MULTI_CHN   8

#define IEC958_DEFAULT_CON ((IEC958_AES0_NONAUDIO \
                | IEC958_AES0_CON_NOT_COPYRIGHT) \
                | ((IEC958_AES1_CON_MIXER \
                | IEC958_AES1_CON_ORIGINAL) << 8) \
                | (0x10 << 16) \
                | ((IEC958_AES3_CON_FS_48000) << 24))

static struct snd_pci_quirk __devinitdata subsys_20k1_list[] = {
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, 0x0022, "SB055x", CTSB055X),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, 0x002f, "SB055x", CTSB055X),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, 0x0029, "SB073x", CTSB073X),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, 0x0031, "SB073x", CTSB073X),
    SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_CREATIVE, 0xf000, 0x6000,
               "UAA", CTUAA),
    { } /* terminator */
};

static struct snd_pci_quirk __devinitdata subsys_20k2_list[] = {
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, PCI_SUBDEVICE_ID_CREATIVE_SB0760,
              "SB0760", CTSB0760),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, PCI_SUBDEVICE_ID_CREATIVE_SB1270,
              "SB1270", CTSB1270),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, PCI_SUBDEVICE_ID_CREATIVE_SB08801,
              "SB0880", CTSB0880),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, PCI_SUBDEVICE_ID_CREATIVE_SB08802,
              "SB0880", CTSB0880),
    SND_PCI_QUIRK(PCI_VENDOR_ID_CREATIVE, PCI_SUBDEVICE_ID_CREATIVE_SB08803,
              "SB0880", CTSB0880),
    SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_CREATIVE, 0xf000,
               PCI_SUBDEVICE_ID_CREATIVE_HENDRIX, "HENDRIX",
               CTHENDRIX),
    { } /* terminator */
};

static const char *ct_subsys_name[NUM_CTCARDS] = {
    /* 20k1 models */
    [CTSB055X]  = "SB055x",
    [CTSB073X]  = "SB073x",
    [CTUAA]     = "UAA",
    [CT20K1_UNKNOWN] = "Unknown",
    /* 20k2 models */
    [CTSB0760]  = "SB076x",
    [CTHENDRIX] = "Hendrix",
    [CTSB0880]  = "SB0880",
    [CTSB1270]      = "SB1270",
    [CT20K2_UNKNOWN] = "Unknown",
};

static struct {
    int (*create)(struct ct_atc *atc,
            enum CTALSADEVS device, const char *device_name);
    int (*destroy)(void *alsa_dev);
    const char *public_name;
} alsa_dev_funcs[NUM_CTALSADEVS] = {
    [FRONT]     = { .create = ct_alsa_pcm_create,
                .destroy = NULL,
                .public_name = "Front/WaveIn"},
    [SURROUND]  = { .create = ct_alsa_pcm_create,
                .destroy = NULL,
                .public_name = "Surround"},
    [CLFE]      = { .create = ct_alsa_pcm_create,
                .destroy = NULL,
                .public_name = "Center/LFE"},
    [SIDE]      = { .create = ct_alsa_pcm_create,
                .destroy = NULL,
                .public_name = "Side"},
    [IEC958]    = { .create = ct_alsa_pcm_create,
                .destroy = NULL,
                .public_name = "IEC958 Non-audio"},

    [MIXER]     = { .create = ct_alsa_mix_create,
                .destroy = NULL,
                .public_name = "Mixer"}
};

typedef int (*create_t)(void *, void **);
typedef int (*destroy_t)(void *);

static struct {
    int (*create)(void *hw, void **rmgr);
    int (*destroy)(void *mgr);
} rsc_mgr_funcs[NUM_RSCTYP] = {
    [SRC]       = { .create     = (create_t)src_mgr_create,
                .destroy    = (destroy_t)src_mgr_destroy    },
    [SRCIMP]    = { .create     = (create_t)srcimp_mgr_create,
                .destroy    = (destroy_t)srcimp_mgr_destroy },
    [AMIXER]    = { .create = (create_t)amixer_mgr_create,
                .destroy    = (destroy_t)amixer_mgr_destroy },
    [SUM]       = { .create = (create_t)sum_mgr_create,
                .destroy    = (destroy_t)sum_mgr_destroy    },
    [DAIO]      = { .create = (create_t)daio_mgr_create,
                .destroy    = (destroy_t)daio_mgr_destroy   }
};

static int
atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm);

/* *
 * Only mono and interleaved modes are supported now.
 * Always allocates a contiguous channel block.
 * */

static int ct_map_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct snd_pcm_runtime *runtime;
    struct ct_vm *vm;

    if (!apcm->substream)
        return 0;

    runtime = apcm->substream->runtime;
    vm = atc->vm;

    apcm->vm_block = vm->map(vm, apcm->substream, runtime->dma_bytes);

    if (!apcm->vm_block)
        return -ENOENT;

    return 0;
}

static void ct_unmap_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct ct_vm *vm;

    if (!apcm->vm_block)
        return;

    vm = atc->vm;

    vm->unmap(vm, apcm->vm_block);

    apcm->vm_block = NULL;
}

static unsigned long atc_get_ptp_phys(struct ct_atc *atc, int index)
{
    return atc->vm->get_ptp_phys(atc->vm, index);
}

static unsigned int convert_format(snd_pcm_format_t snd_format)
{
    switch (snd_format) {
    case SNDRV_PCM_FORMAT_U8:
        return SRC_SF_U8;
    case SNDRV_PCM_FORMAT_S16_LE:
        return SRC_SF_S16;
    case SNDRV_PCM_FORMAT_S24_3LE:
        return SRC_SF_S24;
    case SNDRV_PCM_FORMAT_S32_LE:
        return SRC_SF_S32;
    case SNDRV_PCM_FORMAT_FLOAT_LE:
        return SRC_SF_F32;
    default:
        printk(KERN_ERR "ctxfi: not recognized snd format is %d \n",
            snd_format);
        return SRC_SF_S16;
    }
}

static unsigned int
atc_get_pitch(unsigned int input_rate, unsigned int output_rate)
{
    unsigned int pitch;
    int b;

    /* get pitch and convert to fixed-point 8.24 format. */
    pitch = (input_rate / output_rate) << 24;
    input_rate %= output_rate;
    input_rate /= 100;
    output_rate /= 100;
    for (b = 31; ((b >= 0) && !(input_rate >> b)); )
        b--;

    if (b >= 0) {
        input_rate <<= (31 - b);
        input_rate /= output_rate;
        b = 24 - (31 - b);
        if (b >= 0)
            input_rate <<= b;
        else
            input_rate >>= -b;

        pitch |= input_rate;
    }

    return pitch;
}

static int select_rom(unsigned int pitch)
{
    if (pitch > 0x00428f5c && pitch < 0x01b851ec) {
        /* 0.26 <= pitch <= 1.72 */
        return 1;
    } else if (pitch == 0x01d66666 || pitch == 0x01d66667) {
        /* pitch == 1.8375 */
        return 2;
    } else if (pitch == 0x02000000) {
        /* pitch == 2 */
        return 3;
    } else if (pitch <= 0x08000000) {
        /* 0 <= pitch <= 8 */
        return 0;
    } else {
        return -ENOENT;
    }
}

static int atc_pcm_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
    struct amixer_mgr *amixer_mgr = atc->rsc_mgrs[AMIXER];
    struct src_desc desc = {0};
    struct amixer_desc mix_dsc = {0};
    struct src *src;
    struct amixer *amixer;
    int err;
    int n_amixer = apcm->substream->runtime->channels, i = 0;
    int device = apcm->substream->pcm->device;
    unsigned int pitch;

    /* first release old resources */
    atc_pcm_release_resources(atc, apcm);

    /* Get SRC resource */
    desc.multi = apcm->substream->runtime->channels;
    desc.msr = atc->msr;
    desc.mode = MEMRD;
    err = src_mgr->get_src(src_mgr, &desc, (struct src **)&apcm->src);
    if (err)
        goto error1;

    pitch = atc_get_pitch(apcm->substream->runtime->rate,
                        (atc->rsr * atc->msr));
    src = apcm->src;
    src->ops->set_pitch(src, pitch);
    src->ops->set_rom(src, select_rom(pitch));
    src->ops->set_sf(src, convert_format(apcm->substream->runtime->format));
    src->ops->set_pm(src, (src->ops->next_interleave(src) != NULL));

    /* Get AMIXER resource */
    n_amixer = (n_amixer < 2) ? 2 : n_amixer;
    apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
    if (!apcm->amixers) {
        err = -ENOMEM;
        goto error1;
    }
    mix_dsc.msr = atc->msr;
    for (i = 0, apcm->n_amixer = 0; i < n_amixer; i++) {
        err = amixer_mgr->get_amixer(amixer_mgr, &mix_dsc,
                    (struct amixer **)&apcm->amixers[i]);
        if (err)
            goto error1;

        apcm->n_amixer++;
    }

    /* Set up device virtual mem map */
    err = ct_map_audio_buffer(atc, apcm);
    if (err < 0)
        goto error1;

    /* Connect resources */
    src = apcm->src;
    for (i = 0; i < n_amixer; i++) {
        amixer = apcm->amixers[i];
        mutex_lock(&atc->atc_mutex);
        amixer->ops->setup(amixer, &src->rsc,
                    INIT_VOL, atc->pcm[i+device*2]);
        mutex_unlock(&atc->atc_mutex);
        src = src->ops->next_interleave(src);
        if (!src)
            src = apcm->src;
    }

    ct_timer_prepare(apcm->timer);

    return 0;

error1:
    atc_pcm_release_resources(atc, apcm);
    return err;
}

static int
atc_pcm_release_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
    struct srcimp_mgr *srcimp_mgr = atc->rsc_mgrs[SRCIMP];
    struct amixer_mgr *amixer_mgr = atc->rsc_mgrs[AMIXER];
    struct sum_mgr *sum_mgr = atc->rsc_mgrs[SUM];
    struct srcimp *srcimp;
    int i;

    if (apcm->srcimps) {
        for (i = 0; i < apcm->n_srcimp; i++) {
            srcimp = apcm->srcimps[i];
            srcimp->ops->unmap(srcimp);
            srcimp_mgr->put_srcimp(srcimp_mgr, srcimp);
            apcm->srcimps[i] = NULL;
        }
        kfree(apcm->srcimps);
        apcm->srcimps = NULL;
    }

    if (apcm->srccs) {
        for (i = 0; i < apcm->n_srcc; i++) {
            src_mgr->put_src(src_mgr, apcm->srccs[i]);
            apcm->srccs[i] = NULL;
        }
        kfree(apcm->srccs);
        apcm->srccs = NULL;
    }

    if (apcm->amixers) {
        for (i = 0; i < apcm->n_amixer; i++) {
            amixer_mgr->put_amixer(amixer_mgr, apcm->amixers[i]);
            apcm->amixers[i] = NULL;
        }
        kfree(apcm->amixers);
        apcm->amixers = NULL;
    }

    if (apcm->mono) {
        sum_mgr->put_sum(sum_mgr, apcm->mono);
        apcm->mono = NULL;
    }

    if (apcm->src) {
        src_mgr->put_src(src_mgr, apcm->src);
        apcm->src = NULL;
    }

    if (apcm->vm_block) {
        /* Undo device virtual mem map */
        ct_unmap_audio_buffer(atc, apcm);
        apcm->vm_block = NULL;
    }

    return 0;
}

static int atc_pcm_playback_start(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    unsigned int max_cisz;
    struct src *src = apcm->src;

    if (apcm->started)
        return 0;
    apcm->started = 1;

    max_cisz = src->multi * src->rsc.msr;
    max_cisz = 0x80 * (max_cisz < 8 ? max_cisz : 8);

    src->ops->set_sa(src, apcm->vm_block->addr);
    src->ops->set_la(src, apcm->vm_block->addr + apcm->vm_block->size);
    src->ops->set_ca(src, apcm->vm_block->addr + max_cisz);
    src->ops->set_cisz(src, max_cisz);

    src->ops->set_bm(src, 1);
    src->ops->set_state(src, SRC_STATE_INIT);
    src->ops->commit_write(src);

    ct_timer_start(apcm->timer);
    return 0;
}

static int atc_pcm_stop(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src;
    int i;

    ct_timer_stop(apcm->timer);

    src = apcm->src;
    src->ops->set_bm(src, 0);
    src->ops->set_state(src, SRC_STATE_OFF);
    src->ops->commit_write(src);

    if (apcm->srccs) {
        for (i = 0; i < apcm->n_srcc; i++) {
            src = apcm->srccs[i];
            src->ops->set_bm(src, 0);
            src->ops->set_state(src, SRC_STATE_OFF);
            src->ops->commit_write(src);
        }
    }

    apcm->started = 0;

    return 0;
}

static int
atc_pcm_playback_position(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src = apcm->src;
    u32 size, max_cisz;
    int position;

    if (!src)
        return 0;
    position = src->ops->get_ca(src);

    size = apcm->vm_block->size;
    max_cisz = src->multi * src->rsc.msr;
    max_cisz = 128 * (max_cisz < 8 ? max_cisz : 8);

    return (position + size - max_cisz - apcm->vm_block->addr) % size;
}

struct src_node_conf_t {
    unsigned int pitch;
    unsigned int msr:8;
    unsigned int mix_msr:8;
    unsigned int imp_msr:8;
    unsigned int vo:1;
};

static void setup_src_node_conf(struct ct_atc *atc, struct ct_atc_pcm *apcm,
                struct src_node_conf_t *conf, int *n_srcc)
{
    unsigned int pitch;

    /* get pitch and convert to fixed-point 8.24 format. */
    pitch = atc_get_pitch((atc->rsr * atc->msr),
                apcm->substream->runtime->rate);
    *n_srcc = 0;

    if (1 == atc->msr) { /* FIXME: do we really need SRC here if pitch==1 */
        *n_srcc = apcm->substream->runtime->channels;
        conf[0].pitch = pitch;
        conf[0].mix_msr = conf[0].imp_msr = conf[0].msr = 1;
        conf[0].vo = 1;
    } else if (2 <= atc->msr) {
        if (0x8000000 < pitch) {
            /* Need two-stage SRCs, SRCIMPs and
             * AMIXERs for converting format */
            conf[0].pitch = (atc->msr << 24);
            conf[0].msr = conf[0].mix_msr = 1;
            conf[0].imp_msr = atc->msr;
            conf[0].vo = 0;
            conf[1].pitch = atc_get_pitch(atc->rsr,
                    apcm->substream->runtime->rate);
            conf[1].msr = conf[1].mix_msr = conf[1].imp_msr = 1;
            conf[1].vo = 1;
            *n_srcc = apcm->substream->runtime->channels * 2;
        } else if (0x1000000 < pitch) {
            /* Need one-stage SRCs, SRCIMPs and
             * AMIXERs for converting format */
            conf[0].pitch = pitch;
            conf[0].msr = conf[0].mix_msr
                    = conf[0].imp_msr = atc->msr;
            conf[0].vo = 1;
            *n_srcc = apcm->substream->runtime->channels;
        }
    }
}

static int
atc_pcm_capture_get_resources(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
    struct srcimp_mgr *srcimp_mgr = atc->rsc_mgrs[SRCIMP];
    struct amixer_mgr *amixer_mgr = atc->rsc_mgrs[AMIXER];
    struct sum_mgr *sum_mgr = atc->rsc_mgrs[SUM];
    struct src_desc src_dsc = {0};
    struct src *src;
    struct srcimp_desc srcimp_dsc = {0};
    struct srcimp *srcimp;
    struct amixer_desc mix_dsc = {0};
    struct sum_desc sum_dsc = {0};
    unsigned int pitch;
    int multi, err, i;
    int n_srcimp, n_amixer, n_srcc, n_sum;
    struct src_node_conf_t src_node_conf[2] = {{0} };

    /* first release old resources */
    atc_pcm_release_resources(atc, apcm);

    /* The numbers of converting SRCs and SRCIMPs should be determined
     * by pitch value. */

    multi = apcm->substream->runtime->channels;

    /* get pitch and convert to fixed-point 8.24 format. */
    pitch = atc_get_pitch((atc->rsr * atc->msr),
                apcm->substream->runtime->rate);

    setup_src_node_conf(atc, apcm, src_node_conf, &n_srcc);
    n_sum = (1 == multi) ? 1 : 0;
    n_amixer = n_sum * 2 + n_srcc;
    n_srcimp = n_srcc;
    if ((multi > 1) && (0x8000000 >= pitch)) {
        /* Need extra AMIXERs and SRCIMPs for special treatment
         * of interleaved recording of conjugate channels */
        n_amixer += multi * atc->msr;
        n_srcimp += multi * atc->msr;
    } else {
        n_srcimp += multi;
    }

    if (n_srcc) {
        apcm->srccs = kzalloc(sizeof(void *)*n_srcc, GFP_KERNEL);
        if (!apcm->srccs)
            return -ENOMEM;
    }
    if (n_amixer) {
        apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
        if (!apcm->amixers) {
            err = -ENOMEM;
            goto error1;
        }
    }
    apcm->srcimps = kzalloc(sizeof(void *)*n_srcimp, GFP_KERNEL);
    if (!apcm->srcimps) {
        err = -ENOMEM;
        goto error1;
    }

    /* Allocate SRCs for sample rate conversion if needed */
    src_dsc.multi = 1;
    src_dsc.mode = ARCRW;
    for (i = 0, apcm->n_srcc = 0; i < n_srcc; i++) {
        src_dsc.msr = src_node_conf[i/multi].msr;
        err = src_mgr->get_src(src_mgr, &src_dsc,
                    (struct src **)&apcm->srccs[i]);
        if (err)
            goto error1;

        src = apcm->srccs[i];
        pitch = src_node_conf[i/multi].pitch;
        src->ops->set_pitch(src, pitch);
        src->ops->set_rom(src, select_rom(pitch));
        src->ops->set_vo(src, src_node_conf[i/multi].vo);

        apcm->n_srcc++;
    }

    /* Allocate AMIXERs for routing SRCs of conversion if needed */
    for (i = 0, apcm->n_amixer = 0; i < n_amixer; i++) {
        if (i < (n_sum*2))
            mix_dsc.msr = atc->msr;
        else if (i < (n_sum*2+n_srcc))
            mix_dsc.msr = src_node_conf[(i-n_sum*2)/multi].mix_msr;
        else
            mix_dsc.msr = 1;

        err = amixer_mgr->get_amixer(amixer_mgr, &mix_dsc,
                    (struct amixer **)&apcm->amixers[i]);
        if (err)
            goto error1;

        apcm->n_amixer++;
    }

    /* Allocate a SUM resource to mix all input channels together */
    sum_dsc.msr = atc->msr;
    err = sum_mgr->get_sum(sum_mgr, &sum_dsc, (struct sum **)&apcm->mono);
    if (err)
        goto error1;

    pitch = atc_get_pitch((atc->rsr * atc->msr),
                apcm->substream->runtime->rate);
    /* Allocate SRCIMP resources */
    for (i = 0, apcm->n_srcimp = 0; i < n_srcimp; i++) {
        if (i < (n_srcc))
            srcimp_dsc.msr = src_node_conf[i/multi].imp_msr;
        else if (1 == multi)
            srcimp_dsc.msr = (pitch <= 0x8000000) ? atc->msr : 1;
        else
            srcimp_dsc.msr = 1;

        err = srcimp_mgr->get_srcimp(srcimp_mgr, &srcimp_dsc, &srcimp);
        if (err)
            goto error1;

        apcm->srcimps[i] = srcimp;
        apcm->n_srcimp++;
    }

    /* Allocate a SRC for writing data to host memory */
    src_dsc.multi = apcm->substream->runtime->channels;
    src_dsc.msr = 1;
    src_dsc.mode = MEMWR;
    err = src_mgr->get_src(src_mgr, &src_dsc, (struct src **)&apcm->src);
    if (err)
        goto error1;

    src = apcm->src;
    src->ops->set_pitch(src, pitch);

    /* Set up device virtual mem map */
    err = ct_map_audio_buffer(atc, apcm);
    if (err < 0)
        goto error1;

    return 0;

error1:
    atc_pcm_release_resources(atc, apcm);
    return err;
}

static int atc_pcm_capture_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src;
    struct amixer *amixer;
    struct srcimp *srcimp;
    struct ct_mixer *mixer = atc->mixer;
    struct sum *mono;
    struct rsc *out_ports[8] = {NULL};
    int err, i, j, n_sum, multi;
    unsigned int pitch;
    int mix_base = 0, imp_base = 0;

    atc_pcm_release_resources(atc, apcm);

    /* Get needed resources. */
    err = atc_pcm_capture_get_resources(atc, apcm);
    if (err)
        return err;

    /* Connect resources */
    mixer->get_output_ports(mixer, MIX_PCMO_FRONT,
                &out_ports[0], &out_ports[1]);

    multi = apcm->substream->runtime->channels;
    if (1 == multi) {
        mono = apcm->mono;
        for (i = 0; i < 2; i++) {
            amixer = apcm->amixers[i];
            amixer->ops->setup(amixer, out_ports[i],
                        MONO_SUM_SCALE, mono);
        }
        out_ports[0] = &mono->rsc;
        n_sum = 1;
        mix_base = n_sum * 2;
    }

    for (i = 0; i < apcm->n_srcc; i++) {
        src = apcm->srccs[i];
        srcimp = apcm->srcimps[imp_base+i];
        amixer = apcm->amixers[mix_base+i];
        srcimp->ops->map(srcimp, src, out_ports[i%multi]);
        amixer->ops->setup(amixer, &src->rsc, INIT_VOL, NULL);
        out_ports[i%multi] = &amixer->rsc;
    }

    pitch = atc_get_pitch((atc->rsr * atc->msr),
                apcm->substream->runtime->rate);

    if ((multi > 1) && (pitch <= 0x8000000)) {
        /* Special connection for interleaved
         * recording with conjugate channels */
        for (i = 0; i < multi; i++) {
            out_ports[i]->ops->master(out_ports[i]);
            for (j = 0; j < atc->msr; j++) {
                amixer = apcm->amixers[apcm->n_srcc+j*multi+i];
                amixer->ops->set_input(amixer, out_ports[i]);
                amixer->ops->set_scale(amixer, INIT_VOL);
                amixer->ops->set_sum(amixer, NULL);
                amixer->ops->commit_raw_write(amixer);
                out_ports[i]->ops->next_conj(out_ports[i]);

                srcimp = apcm->srcimps[apcm->n_srcc+j*multi+i];
                srcimp->ops->map(srcimp, apcm->src,
                            &amixer->rsc);
            }
        }
    } else {
        for (i = 0; i < multi; i++) {
            srcimp = apcm->srcimps[apcm->n_srcc+i];
            srcimp->ops->map(srcimp, apcm->src, out_ports[i]);
        }
    }

    ct_timer_prepare(apcm->timer);

    return 0;
}

static int atc_pcm_capture_start(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src;
    struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
    int i, multi;

    if (apcm->started)
        return 0;

    apcm->started = 1;
    multi = apcm->substream->runtime->channels;
    /* Set up converting SRCs */
    for (i = 0; i < apcm->n_srcc; i++) {
        src = apcm->srccs[i];
        src->ops->set_pm(src, ((i%multi) != (multi-1)));
        src_mgr->src_disable(src_mgr, src);
    }

    /*  Set up recording SRC */
    src = apcm->src;
    src->ops->set_sf(src, convert_format(apcm->substream->runtime->format));
    src->ops->set_sa(src, apcm->vm_block->addr);
    src->ops->set_la(src, apcm->vm_block->addr + apcm->vm_block->size);
    src->ops->set_ca(src, apcm->vm_block->addr);
    src_mgr->src_disable(src_mgr, src);

    /* Disable relevant SRCs firstly */
    src_mgr->commit_write(src_mgr);

    /* Enable SRCs respectively */
    for (i = 0; i < apcm->n_srcc; i++) {
        src = apcm->srccs[i];
        src->ops->set_state(src, SRC_STATE_RUN);
        src->ops->commit_write(src);
        src_mgr->src_enable_s(src_mgr, src);
    }
    src = apcm->src;
    src->ops->set_bm(src, 1);
    src->ops->set_state(src, SRC_STATE_RUN);
    src->ops->commit_write(src);
    src_mgr->src_enable_s(src_mgr, src);

    /* Enable relevant SRCs synchronously */
    src_mgr->commit_write(src_mgr);

    ct_timer_start(apcm->timer);
    return 0;
}

static int
atc_pcm_capture_position(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src = apcm->src;

    if (!src)
        return 0;
    return src->ops->get_ca(src) - apcm->vm_block->addr;
}

static int spdif_passthru_playback_get_resources(struct ct_atc *atc,
                         struct ct_atc_pcm *apcm)
{
    struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
    struct amixer_mgr *amixer_mgr = atc->rsc_mgrs[AMIXER];
    struct src_desc desc = {0};
    struct amixer_desc mix_dsc = {0};
    struct src *src;
    int err;
    int n_amixer = apcm->substream->runtime->channels, i;
    unsigned int pitch, rsr = atc->pll_rate;

    /* first release old resources */
    atc_pcm_release_resources(atc, apcm);

    /* Get SRC resource */
    desc.multi = apcm->substream->runtime->channels;
    desc.msr = 1;
    while (apcm->substream->runtime->rate > (rsr * desc.msr))
        desc.msr <<= 1;

    desc.mode = MEMRD;
    err = src_mgr->get_src(src_mgr, &desc, (struct src **)&apcm->src);
    if (err)
        goto error1;

    pitch = atc_get_pitch(apcm->substream->runtime->rate, (rsr * desc.msr));
    src = apcm->src;
    src->ops->set_pitch(src, pitch);
    src->ops->set_rom(src, select_rom(pitch));
    src->ops->set_sf(src, convert_format(apcm->substream->runtime->format));
    src->ops->set_pm(src, (src->ops->next_interleave(src) != NULL));
    src->ops->set_bp(src, 1);

    /* Get AMIXER resource */
    n_amixer = (n_amixer < 2) ? 2 : n_amixer;
    apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
    if (!apcm->amixers) {
        err = -ENOMEM;
        goto error1;
    }
    mix_dsc.msr = desc.msr;
    for (i = 0, apcm->n_amixer = 0; i < n_amixer; i++) {
        err = amixer_mgr->get_amixer(amixer_mgr, &mix_dsc,
                    (struct amixer **)&apcm->amixers[i]);
        if (err)
            goto error1;

        apcm->n_amixer++;
    }

    /* Set up device virtual mem map */
    err = ct_map_audio_buffer(atc, apcm);
    if (err < 0)
        goto error1;

    return 0;

error1:
    atc_pcm_release_resources(atc, apcm);
    return err;
}

static int atc_pll_init(struct ct_atc *atc, int rate)
{
    struct hw *hw = atc->hw;
    int err;
    err = hw->pll_init(hw, rate);
    atc->pll_rate = err ? 0 : rate;
    return err;
}

static int
spdif_passthru_playback_setup(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct dao *dao = container_of(atc->daios[SPDIFOO], struct dao, daio);
    unsigned int rate = apcm->substream->runtime->rate;
    unsigned int status;
    int err = 0;
    unsigned char iec958_con_fs;

    switch (rate) {
    case 48000:
        iec958_con_fs = IEC958_AES3_CON_FS_48000;
        break;
    case 44100:
        iec958_con_fs = IEC958_AES3_CON_FS_44100;
        break;
    case 32000:
        iec958_con_fs = IEC958_AES3_CON_FS_32000;
        break;
    default:
        return -ENOENT;
    }

    mutex_lock(&atc->atc_mutex);
    dao->ops->get_spos(dao, &status);
    if (((status >> 24) & IEC958_AES3_CON_FS) != iec958_con_fs) {
        status &= ~(IEC958_AES3_CON_FS << 24);
        status |= (iec958_con_fs << 24);
        dao->ops->set_spos(dao, status);
        dao->ops->commit_write(dao);
    }
    if ((rate != atc->pll_rate) && (32000 != rate))
        err = atc_pll_init(atc, rate);
    mutex_unlock(&atc->atc_mutex);

    return err;
}

static int
spdif_passthru_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
{
    struct src *src;
    struct amixer *amixer;
    struct dao *dao;
    int err;
    int i;

    atc_pcm_release_resources(atc, apcm);

    /* Configure SPDIFOO and PLL to passthrough mode;
     * determine pll_rate. */
    err = spdif_passthru_playback_setup(atc, apcm);
    if (err)
        return err;

    /* Get needed resources. */
    err = spdif_passthru_playback_get_resources(atc, apcm);
    if (err)
        return err;

    /* Connect resources */
    src = apcm->src;
    for (i = 0; i < apcm->n_amixer; i++) {
        amixer = apcm->amixers[i];
        amixer->ops->setup(amixer, &src->rsc, INIT_VOL, NULL);
        src = src->ops->next_interleave(src);
        if (!src)
            src = apcm->src;
    }
    /* Connect to SPDIFOO */
    mutex_lock(&atc->atc_mutex);
    dao = container_of(atc->daios[SPDIFOO], struct dao, daio);
    amixer = apcm->amixers[0];
    dao->ops->set_left_input(dao, &amixer->rsc);
    amixer = apcm->amixers[1];
    dao->ops->set_right_input(dao, &amixer->rsc);
    mutex_unlock(&atc->atc_mutex);

    ct_timer_prepare(apcm->timer);

    return 0;
}

static int atc_select_line_in(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;
    struct ct_mixer *mixer = atc->mixer;
    struct src *src;

    if (hw->is_adc_source_selected(hw, ADC_LINEIN))
        return 0;

    mixer->set_input_left(mixer, MIX_MIC_IN, NULL);
    mixer->set_input_right(mixer, MIX_MIC_IN, NULL);

    hw->select_adc_source(hw, ADC_LINEIN);

    src = atc->srcs[2];
    mixer->set_input_left(mixer, MIX_LINE_IN, &src->rsc);
    src = atc->srcs[3];
    mixer->set_input_right(mixer, MIX_LINE_IN, &src->rsc);

    return 0;
}

static int atc_select_mic_in(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;
    struct ct_mixer *mixer = atc->mixer;
    struct src *src;

    if (hw->is_adc_source_selected(hw, ADC_MICIN))
        return 0;

    mixer->set_input_left(mixer, MIX_LINE_IN, NULL);
    mixer->set_input_right(mixer, MIX_LINE_IN, NULL);

    hw->select_adc_source(hw, ADC_MICIN);

    src = atc->srcs[2];
    mixer->set_input_left(mixer, MIX_MIC_IN, &src->rsc);
    src = atc->srcs[3];
    mixer->set_input_right(mixer, MIX_MIC_IN, &src->rsc);

    return 0;
}

static struct capabilities atc_capabilities(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;

    return hw->capabilities(hw);
}

static int atc_output_switch_get(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;

    return hw->output_switch_get(hw);
}

static int atc_output_switch_put(struct ct_atc *atc, int position)
{
    struct hw *hw = atc->hw;

    return hw->output_switch_put(hw, position);
}

static int atc_mic_source_switch_get(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;

    return hw->mic_source_switch_get(hw);
}

static int atc_mic_source_switch_put(struct ct_atc *atc, int position)
{
    struct hw *hw = atc->hw;

    return hw->mic_source_switch_put(hw, position);
}

static int atc_select_digit_io(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;

    if (hw->is_adc_source_selected(hw, ADC_NONE))
        return 0;

    hw->select_adc_source(hw, ADC_NONE);

    return 0;
}

static int atc_daio_unmute(struct ct_atc *atc, unsigned char state, int type)
{
    struct daio_mgr *daio_mgr = atc->rsc_mgrs[DAIO];

    if (state)
        daio_mgr->daio_enable(daio_mgr, atc->daios[type]);
    else
        daio_mgr->daio_disable(daio_mgr, atc->daios[type]);

    daio_mgr->commit_write(daio_mgr);

    return 0;
}

static int
atc_dao_get_status(struct ct_atc *atc, unsigned int *status, int type)
{
    struct dao *dao = container_of(atc->daios[type], struct dao, daio);
    return dao->ops->get_spos(dao, status);
}

static int
atc_dao_set_status(struct ct_atc *atc, unsigned int status, int type)
{
    struct dao *dao = container_of(atc->daios[type], struct dao, daio);

    dao->ops->set_spos(dao, status);
    dao->ops->commit_write(dao);
    return 0;
}

static int atc_line_front_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, LINEO1);
}

static int atc_line_surround_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, LINEO2);
}

static int atc_line_clfe_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, LINEO3);
}

static int atc_line_rear_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, LINEO4);
}

static int atc_line_in_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, LINEIM);
}

static int atc_mic_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, MIC);
}

static int atc_spdif_out_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, SPDIFOO);
}

static int atc_spdif_in_unmute(struct ct_atc *atc, unsigned char state)
{
    return atc_daio_unmute(atc, state, SPDIFIO);
}

static int atc_spdif_out_get_status(struct ct_atc *atc, unsigned int *status)
{
    return atc_dao_get_status(atc, status, SPDIFOO);
}

static int atc_spdif_out_set_status(struct ct_atc *atc, unsigned int status)
{
    return atc_dao_set_status(atc, status, SPDIFOO);
}

static int atc_spdif_out_passthru(struct ct_atc *atc, unsigned char state)
{
    struct dao_desc da_dsc = {0};
    struct dao *dao;
    int err;
    struct ct_mixer *mixer = atc->mixer;
    struct rsc *rscs[2] = {NULL};
    unsigned int spos = 0;

    mutex_lock(&atc->atc_mutex);
    dao = container_of(atc->daios[SPDIFOO], struct dao, daio);
    da_dsc.msr = state ? 1 : atc->msr;
    da_dsc.passthru = state ? 1 : 0;
    err = dao->ops->reinit(dao, &da_dsc);
    if (state) {
        spos = IEC958_DEFAULT_CON;
    } else {
        mixer->get_output_ports(mixer, MIX_SPDIF_OUT,
                    &rscs[0], &rscs[1]);
        dao->ops->set_left_input(dao, rscs[0]);
        dao->ops->set_right_input(dao, rscs[1]);
        /* Restore PLL to atc->rsr if needed. */
        if (atc->pll_rate != atc->rsr)
            err = atc_pll_init(atc, atc->rsr);
    }
    dao->ops->set_spos(dao, spos);
    dao->ops->commit_write(dao);
    mutex_unlock(&atc->atc_mutex);

    return err;
}

static int atc_release_resources(struct ct_atc *atc)
{
    int i;
    struct daio_mgr *daio_mgr = NULL;
    struct dao *dao = NULL;
    struct dai *dai = NULL;
    struct daio *daio = NULL;
    struct sum_mgr *sum_mgr = NULL;
    struct src_mgr *src_mgr = NULL;
    struct srcimp_mgr *srcimp_mgr = NULL;
    struct srcimp *srcimp = NULL;
    struct ct_mixer *mixer = NULL;

    /* disconnect internal mixer objects */
    if (atc->mixer) {
        mixer = atc->mixer;
        mixer->set_input_left(mixer, MIX_LINE_IN, NULL);
        mixer->set_input_right(mixer, MIX_LINE_IN, NULL);
        mixer->set_input_left(mixer, MIX_MIC_IN, NULL);
        mixer->set_input_right(mixer, MIX_MIC_IN, NULL);
        mixer->set_input_left(mixer, MIX_SPDIF_IN, NULL);
        mixer->set_input_right(mixer, MIX_SPDIF_IN, NULL);
    }

    if (atc->daios) {
        daio_mgr = (struct daio_mgr *)atc->rsc_mgrs[DAIO];
        for (i = 0; i < atc->n_daio; i++) {
            daio = atc->daios[i];
            if (daio->type < LINEIM) {
                dao = container_of(daio, struct dao, daio);
                dao->ops->clear_left_input(dao);
                dao->ops->clear_right_input(dao);
            } else {
                dai = container_of(daio, struct dai, daio);
                /* some thing to do for dai ... */
            }
            daio_mgr->put_daio(daio_mgr, daio);
        }
        kfree(atc->daios);
        atc->daios = NULL;
    }

    if (atc->pcm) {
        sum_mgr = atc->rsc_mgrs[SUM];
        for (i = 0; i < atc->n_pcm; i++)
            sum_mgr->put_sum(sum_mgr, atc->pcm[i]);

        kfree(atc->pcm);
        atc->pcm = NULL;
    }

    if (atc->srcs) {
        src_mgr = atc->rsc_mgrs[SRC];
        for (i = 0; i < atc->n_src; i++)
            src_mgr->put_src(src_mgr, atc->srcs[i]);

        kfree(atc->srcs);
        atc->srcs = NULL;
    }

    if (atc->srcimps) {
        srcimp_mgr = atc->rsc_mgrs[SRCIMP];
        for (i = 0; i < atc->n_srcimp; i++) {
            srcimp = atc->srcimps[i];
            srcimp->ops->unmap(srcimp);
            srcimp_mgr->put_srcimp(srcimp_mgr, atc->srcimps[i]);
        }
        kfree(atc->srcimps);
        atc->srcimps = NULL;
    }

    return 0;
}

static int ct_atc_destroy(struct ct_atc *atc)
{
    int i = 0;

    if (!atc)
        return 0;

    if (atc->timer) {
        ct_timer_free(atc->timer);
        atc->timer = NULL;
    }

    atc_release_resources(atc);

    /* Destroy internal mixer objects */
    if (atc->mixer)
        ct_mixer_destroy(atc->mixer);

    for (i = 0; i < NUM_RSCTYP; i++) {
        if (rsc_mgr_funcs[i].destroy && atc->rsc_mgrs[i])
            rsc_mgr_funcs[i].destroy(atc->rsc_mgrs[i]);

    }

    if (atc->hw)
        destroy_hw_obj((struct hw *)atc->hw);

    /* Destroy device virtual memory manager object */
    if (atc->vm) {
        ct_vm_destroy(atc->vm);
        atc->vm = NULL;
    }

    kfree(atc);

    return 0;
}

static int atc_dev_free(struct snd_device *dev)
{
    struct ct_atc *atc = dev->device_data;
    return ct_atc_destroy(atc);
}

static int __devinit atc_identify_card(struct ct_atc *atc, unsigned int ssid)
{
    const struct snd_pci_quirk *p;
    const struct snd_pci_quirk *list;
    u16 vendor_id, device_id;

    switch (atc->chip_type) {
    case ATC20K1:
        atc->chip_name = "20K1";
        list = subsys_20k1_list;
        break;
    case ATC20K2:
        atc->chip_name = "20K2";
        list = subsys_20k2_list;
        break;
    default:
        return -ENOENT;
    }
    if (ssid) {
        vendor_id = ssid >> 16;
        device_id = ssid & 0xffff;
    } else {
        vendor_id = atc->pci->subsystem_vendor;
        device_id = atc->pci->subsystem_device;
    }
    p = snd_pci_quirk_lookup_id(vendor_id, device_id, list);
    if (p) {
        if (p->value < 0) {
            printk(KERN_ERR "ctxfi: "
                   "Device %04x:%04x is black-listed\n",
                   vendor_id, device_id);
            return -ENOENT;
        }
        atc->model = p->value;
    } else {
        if (atc->chip_type == ATC20K1)
            atc->model = CT20K1_UNKNOWN;
        else
            atc->model = CT20K2_UNKNOWN;
    }
    atc->model_name = ct_subsys_name[atc->model];
    snd_printd("ctxfi: chip %s model %s (%04x:%04x) is found\n",
           atc->chip_name, atc->model_name,
           vendor_id, device_id);
    return 0;
}

int __devinit ct_atc_create_alsa_devs(struct ct_atc *atc)
{
    enum CTALSADEVS i;
    int err;

    alsa_dev_funcs[MIXER].public_name = atc->chip_name;

    for (i = 0; i < NUM_CTALSADEVS; i++) {
        if (!alsa_dev_funcs[i].create)
            continue;

        err = alsa_dev_funcs[i].create(atc, i,
                alsa_dev_funcs[i].public_name);
        if (err) {
            printk(KERN_ERR "ctxfi: "
                   "Creating alsa device %d failed!\n", i);
            return err;
        }
    }

    return 0;
}

static int __devinit atc_create_hw_devs(struct ct_atc *atc)
{
    struct hw *hw;
    struct card_conf info = {0};
    int i, err;

    err = create_hw_obj(atc->pci, atc->chip_type, atc->model, &hw);
    if (err) {
        printk(KERN_ERR "Failed to create hw obj!!!\n");
        return err;
    }
    atc->hw = hw;

    /* Initialize card hardware. */
    info.rsr = atc->rsr;
    info.msr = atc->msr;
    info.vm_pgt_phys = atc_get_ptp_phys(atc, 0);
    err = hw->card_init(hw, &info);
    if (err < 0)
        return err;

    for (i = 0; i < NUM_RSCTYP; i++) {
        if (!rsc_mgr_funcs[i].create)
            continue;

        err = rsc_mgr_funcs[i].create(atc->hw, &atc->rsc_mgrs[i]);
        if (err) {
            printk(KERN_ERR "ctxfi: "
                   "Failed to create rsc_mgr %d!!!\n", i);
            return err;
        }
    }

    return 0;
}

static int atc_get_resources(struct ct_atc *atc)
{
    struct daio_desc da_desc = {0};
    struct daio_mgr *daio_mgr;
    struct src_desc src_dsc = {0};
    struct src_mgr *src_mgr;
    struct srcimp_desc srcimp_dsc = {0};
    struct srcimp_mgr *srcimp_mgr;
    struct sum_desc sum_dsc = {0};
    struct sum_mgr *sum_mgr;
    int err, i, num_srcs, num_daios;

    num_daios = ((atc->model == CTSB1270) ? 8 : 7);
    num_srcs = ((atc->model == CTSB1270) ? 6 : 4);

    atc->daios = kzalloc(sizeof(void *)*num_daios, GFP_KERNEL);
    if (!atc->daios)
        return -ENOMEM;

    atc->srcs = kzalloc(sizeof(void *)*num_srcs, GFP_KERNEL);
    if (!atc->srcs)
        return -ENOMEM;

    atc->srcimps = kzalloc(sizeof(void *)*num_srcs, GFP_KERNEL);
    if (!atc->srcimps)
        return -ENOMEM;

    atc->pcm = kzalloc(sizeof(void *)*(2*4), GFP_KERNEL);
    if (!atc->pcm)
        return -ENOMEM;

    daio_mgr = (struct daio_mgr *)atc->rsc_mgrs[DAIO];
    da_desc.msr = atc->msr;
    for (i = 0, atc->n_daio = 0; i < num_daios; i++) {
        da_desc.type = (atc->model != CTSB073X) ? i :
                 ((i == SPDIFIO) ? SPDIFI1 : i);
        err = daio_mgr->get_daio(daio_mgr, &da_desc,
                    (struct daio **)&atc->daios[i]);
        if (err) {
            printk(KERN_ERR "ctxfi: Failed to get DAIO "
                    "resource %d!!!\n", i);
            return err;
        }
        atc->n_daio++;
    }

    src_mgr = atc->rsc_mgrs[SRC];
    src_dsc.multi = 1;
    src_dsc.msr = atc->msr;
    src_dsc.mode = ARCRW;
    for (i = 0, atc->n_src = 0; i < num_srcs; i++) {
        err = src_mgr->get_src(src_mgr, &src_dsc,
                    (struct src **)&atc->srcs[i]);
        if (err)
            return err;

        atc->n_src++;
    }

    srcimp_mgr = atc->rsc_mgrs[SRCIMP];
    srcimp_dsc.msr = 8;
    for (i = 0, atc->n_srcimp = 0; i < num_srcs; i++) {
        err = srcimp_mgr->get_srcimp(srcimp_mgr, &srcimp_dsc,
                    (struct srcimp **)&atc->srcimps[i]);
        if (err)
            return err;

        atc->n_srcimp++;
    }

    sum_mgr = atc->rsc_mgrs[SUM];
    sum_dsc.msr = atc->msr;
    for (i = 0, atc->n_pcm = 0; i < (2*4); i++) {
        err = sum_mgr->get_sum(sum_mgr, &sum_dsc,
                    (struct sum **)&atc->pcm[i]);
        if (err)
            return err;

        atc->n_pcm++;
    }

    return 0;
}

static void
atc_connect_dai(struct src_mgr *src_mgr, struct dai *dai,
        struct src **srcs, struct srcimp **srcimps)
{
    struct rsc *rscs[2] = {NULL};
    struct src *src;
    struct srcimp *srcimp;
    int i = 0;

    rscs[0] = &dai->daio.rscl;
    rscs[1] = &dai->daio.rscr;
    for (i = 0; i < 2; i++) {
        src = srcs[i];
        srcimp = srcimps[i];
        srcimp->ops->map(srcimp, src, rscs[i]);
        src_mgr->src_disable(src_mgr, src);
    }

    src_mgr->commit_write(src_mgr); /* Actually disable SRCs */

    src = srcs[0];
    src->ops->set_pm(src, 1);
    for (i = 0; i < 2; i++) {
        src = srcs[i];
        src->ops->set_state(src, SRC_STATE_RUN);
        src->ops->commit_write(src);
        src_mgr->src_enable_s(src_mgr, src);
    }

    dai->ops->set_srt_srcl(dai, &(srcs[0]->rsc));
    dai->ops->set_srt_srcr(dai, &(srcs[1]->rsc));

    dai->ops->set_enb_src(dai, 1);
    dai->ops->set_enb_srt(dai, 1);
    dai->ops->commit_write(dai);

    src_mgr->commit_write(src_mgr); /* Synchronously enable SRCs */
}

static void atc_connect_resources(struct ct_atc *atc)
{
    struct dai *dai;
    struct dao *dao;
    struct src *src;
    struct sum *sum;
    struct ct_mixer *mixer;
    struct rsc *rscs[2] = {NULL};
    int i, j;

    mixer = atc->mixer;

    for (i = MIX_WAVE_FRONT, j = LINEO1; i <= MIX_SPDIF_OUT; i++, j++) {
        mixer->get_output_ports(mixer, i, &rscs[0], &rscs[1]);
        dao = container_of(atc->daios[j], struct dao, daio);
        dao->ops->set_left_input(dao, rscs[0]);
        dao->ops->set_right_input(dao, rscs[1]);
    }

    dai = container_of(atc->daios[LINEIM], struct dai, daio);
    atc_connect_dai(atc->rsc_mgrs[SRC], dai,
            (struct src **)&atc->srcs[2],
            (struct srcimp **)&atc->srcimps[2]);
    src = atc->srcs[2];
    mixer->set_input_left(mixer, MIX_LINE_IN, &src->rsc);
    src = atc->srcs[3];
    mixer->set_input_right(mixer, MIX_LINE_IN, &src->rsc);

    if (atc->model == CTSB1270) {
        /* Titanium HD has a dedicated ADC for the Mic. */
        dai = container_of(atc->daios[MIC], struct dai, daio);
        atc_connect_dai(atc->rsc_mgrs[SRC], dai,
            (struct src **)&atc->srcs[4],
            (struct srcimp **)&atc->srcimps[4]);
        src = atc->srcs[4];
        mixer->set_input_left(mixer, MIX_MIC_IN, &src->rsc);
        src = atc->srcs[5];
        mixer->set_input_right(mixer, MIX_MIC_IN, &src->rsc);
    }

    dai = container_of(atc->daios[SPDIFIO], struct dai, daio);
    atc_connect_dai(atc->rsc_mgrs[SRC], dai,
            (struct src **)&atc->srcs[0],
            (struct srcimp **)&atc->srcimps[0]);

    src = atc->srcs[0];
    mixer->set_input_left(mixer, MIX_SPDIF_IN, &src->rsc);
    src = atc->srcs[1];
    mixer->set_input_right(mixer, MIX_SPDIF_IN, &src->rsc);

    for (i = MIX_PCMI_FRONT, j = 0; i <= MIX_PCMI_SURROUND; i++, j += 2) {
        sum = atc->pcm[j];
        mixer->set_input_left(mixer, i, &sum->rsc);
        sum = atc->pcm[j+1];
        mixer->set_input_right(mixer, i, &sum->rsc);
    }
}

#ifdef CONFIG_PM_SLEEP
static int atc_suspend(struct ct_atc *atc)
{
    int i;
    struct hw *hw = atc->hw;

    snd_power_change_state(atc->card, SNDRV_CTL_POWER_D3hot);

    for (i = FRONT; i < NUM_PCMS; i++) {
        if (!atc->pcms[i])
            continue;

        snd_pcm_suspend_all(atc->pcms[i]);
    }

    atc_release_resources(atc);

    hw->suspend(hw);

    return 0;
}

static int atc_hw_resume(struct ct_atc *atc)
{
    struct hw *hw = atc->hw;
    struct card_conf info = {0};

    /* Re-initialize card hardware. */
    info.rsr = atc->rsr;
    info.msr = atc->msr;
    info.vm_pgt_phys = atc_get_ptp_phys(atc, 0);
    return hw->resume(hw, &info);
}

static int atc_resources_resume(struct ct_atc *atc)
{
    struct ct_mixer *mixer;
    int err = 0;

    /* Get resources */
    err = atc_get_resources(atc);
    if (err < 0) {
        atc_release_resources(atc);
        return err;
    }

    /* Build topology */
    atc_connect_resources(atc);

    mixer = atc->mixer;
    mixer->resume(mixer);

    return 0;
}

static int atc_resume(struct ct_atc *atc)
{
    int err = 0;

    /* Do hardware resume. */
    err = atc_hw_resume(atc);
    if (err < 0) {
        printk(KERN_ERR "ctxfi: pci_enable_device failed, "
               "disabling device\n");
        snd_card_disconnect(atc->card);
        return err;
    }

    err = atc_resources_resume(atc);
    if (err < 0)
        return err;

    snd_power_change_state(atc->card, SNDRV_CTL_POWER_D0);

    return 0;
}
#endif

static struct ct_atc atc_preset __devinitdata = {
    .map_audio_buffer = ct_map_audio_buffer,
    .unmap_audio_buffer = ct_unmap_audio_buffer,
    .pcm_playback_prepare = atc_pcm_playback_prepare,
    .pcm_release_resources = atc_pcm_release_resources,
    .pcm_playback_start = atc_pcm_playback_start,
    .pcm_playback_stop = atc_pcm_stop,
    .pcm_playback_position = atc_pcm_playback_position,
    .pcm_capture_prepare = atc_pcm_capture_prepare,
    .pcm_capture_start = atc_pcm_capture_start,
    .pcm_capture_stop = atc_pcm_stop,
    .pcm_capture_position = atc_pcm_capture_position,
    .spdif_passthru_playback_prepare = spdif_passthru_playback_prepare,
    .get_ptp_phys = atc_get_ptp_phys,
    .select_line_in = atc_select_line_in,
    .select_mic_in = atc_select_mic_in,
    .select_digit_io = atc_select_digit_io,
    .line_front_unmute = atc_line_front_unmute,
    .line_surround_unmute = atc_line_surround_unmute,
    .line_clfe_unmute = atc_line_clfe_unmute,
    .line_rear_unmute = atc_line_rear_unmute,
    .line_in_unmute = atc_line_in_unmute,
    .mic_unmute = atc_mic_unmute,
    .spdif_out_unmute = atc_spdif_out_unmute,
    .spdif_in_unmute = atc_spdif_in_unmute,
    .spdif_out_get_status = atc_spdif_out_get_status,
    .spdif_out_set_status = atc_spdif_out_set_status,
    .spdif_out_passthru = atc_spdif_out_passthru,
    .capabilities = atc_capabilities,
    .output_switch_get = atc_output_switch_get,
    .output_switch_put = atc_output_switch_put,
    .mic_source_switch_get = atc_mic_source_switch_get,
    .mic_source_switch_put = atc_mic_source_switch_put,
#ifdef CONFIG_PM_SLEEP
    .suspend = atc_suspend,
    .resume = atc_resume,
#endif
};

int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
                unsigned int rsr, unsigned int msr,
                int chip_type, unsigned int ssid,
                struct ct_atc **ratc)
{
    struct ct_atc *atc;
    static struct snd_device_ops ops = {
        .dev_free = atc_dev_free,
    };
    int err;

    *ratc = NULL;

    atc = kzalloc(sizeof(*atc), GFP_KERNEL);
    if (!atc)
        return -ENOMEM;

    /* Set operations */
    *atc = atc_preset;

    atc->card = card;
    atc->pci = pci;
    atc->rsr = rsr;
    atc->msr = msr;
    atc->chip_type = chip_type;

    mutex_init(&atc->atc_mutex);

    /* Find card model */
    err = atc_identify_card(atc, ssid);
    if (err < 0) {
        printk(KERN_ERR "ctatc: Card not recognised\n");
        goto error1;
    }

    /* Set up device virtual memory management object */
    err = ct_vm_create(&atc->vm, pci);
    if (err < 0)
        goto error1;

    /* Create all atc hw devices */
    err = atc_create_hw_devs(atc);
    if (err < 0)
        goto error1;

    err = ct_mixer_create(atc, (struct ct_mixer **)&atc->mixer);
    if (err) {
        printk(KERN_ERR "ctxfi: Failed to create mixer obj!!!\n");
        goto error1;
    }

    /* Get resources */
    err = atc_get_resources(atc);
    if (err < 0)
        goto error1;

    /* Build topology */
    atc_connect_resources(atc);

    atc->timer = ct_timer_new(atc);
    if (!atc->timer) {
        err = -ENOMEM;
        goto error1;
    }

    err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, atc, &ops);
    if (err < 0)
        goto error1;

    snd_card_set_dev(card, &pci->dev);

    *ratc = atc;
    return 0;

error1:
    ct_atc_destroy(atc);
    printk(KERN_ERR "ctxfi: Something wrong!!!\n");
    return err;
}