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ctatc.c

/**
 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
 *
 * This source file is released under GPL v2 license (no other versions).
 * See the COPYING file included in the main directory of this source
 * distribution for the license terms and conditions.
 *
 * @File    ctatc.c
 *
 * @Brief
 * This file contains the implementation of the device resource management
 * object.
 *
 * @Author Liu Chun
 * @Date Mar 28 2008
 */

#include "ctatc.h"
#include "ctpcm.h"
#include "ctmixer.h"
#include "cthardware.h"
#include "ctsrc.h"
#include "ctamixer.h"
#include "ctdaio.h"
#include "cttimer.h"
#include <linux/delay.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 DAIONUM         7
#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_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",
      [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)
{
      struct ct_vm *vm;
      void *kvirt_addr;
      unsigned long phys_addr;

      vm = atc->vm;
      kvirt_addr = vm->get_ptp_virt(vm, index);
      if (kvirt_addr == NULL)
            phys_addr = (~0UL);
      else
            phys_addr = virt_to_phys(kvirt_addr);

      return phys_addr;
}

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 >= 0x0 && 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) {
            *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 int atc_have_digit_io_switch(struct ct_atc *atc)
{
      struct hw *hw = atc->hw;

      return hw->have_digit_io_switch(hw);
}

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, LINEO4);
}

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, LINEO2);
}

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

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)
{
      const struct snd_pci_quirk *p;
      const struct snd_pci_quirk *list;

      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;
      }
      p = snd_pci_quirk_lookup(atc->pci, list);
      if (p) {
            if (p->value < 0) {
                  printk(KERN_ERR "ctxfi: "
                         "Device %04x:%04x is black-listed\n",
                         atc->pci->subsystem_vendor,
                         atc->pci->subsystem_device);
                  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,
               atc->pci->subsystem_vendor,
               atc->pci->subsystem_device);
      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;

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

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

      atc->srcimps = kzalloc(sizeof(void *)*(2*2), 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 < DAIONUM-1; i++) {
            da_desc.type = 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++;
      }
      if (atc->model == CTSB073X)
            da_desc.type = SPDIFI1;
      else
            da_desc.type = SPDIFIO;
      err = daio_mgr->get_daio(daio_mgr, &da_desc,
                        (struct daio **)&atc->daios[i]);
      if (err) {
            printk(KERN_ERR "ctxfi: Failed to get S/PDIF-in resource!!!\n");
            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 < (2*2); 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; /* SRCIMPs for S/PDIFIn SRT */
      for (i = 0, atc->n_srcimp = 0; i < (2*1); i++) {
            err = srcimp_mgr->get_srcimp(srcimp_mgr, &srcimp_dsc,
                              (struct srcimp **)&atc->srcimps[i]);
            if (err)
                  return err;

            atc->n_srcimp++;
      }
      srcimp_dsc.msr = 8; /* SRCIMPs for LINE/MICIn SRT */
      for (i = 0; i < (2*1); i++) {
            err = srcimp_mgr->get_srcimp(srcimp_mgr, &srcimp_dsc,
                        (struct srcimp **)&atc->srcimps[2*1+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);

      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
static int atc_suspend(struct ct_atc *atc, pm_message_t state)
{
      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, state);

      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,
      .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,
      .have_digit_io_switch = atc_have_digit_io_switch,
#ifdef CONFIG_PM
      .suspend = atc_suspend,
      .resume = atc_resume,
#endif
};

/**
 *  ct_atc_create - create and initialize a hardware manager
 *  @card: corresponding alsa card object
 *  @pci: corresponding kernel pci device object
 *  @ratc: return created object address in it
 *
 *  Creates and initializes a hardware manager.
 *
 *  Creates kmallocated ct_atc structure. Initializes hardware.
 *  Returns 0 if suceeds, or negative error code if fails.
 */

int __devinit ct_atc_create(struct snd_card *card, struct pci_dev *pci,
                      unsigned int rsr, unsigned int msr,
                      int chip_type, 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);
      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);
      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)
            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;
}

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