ALSA: SB X-Fi driver merge

The Sound Blaster X-Fi driver supports Creative solutions based on
20K1 and 20K2 chipsets.

Supported hardware :

Creative Sound Blaster X-Fi Titanium Fatal1ty® Champion Series
Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
Creative Sound Blaster X-Fi Titanium Professional Audio
Creative Sound Blaster X-Fi Titanium
Creative Sound Blaster X-Fi Elite Pro
Creative Sound Blaster X-Fi Platinum
Creative Sound Blaster X-Fi Fatal1ty
Creative Sound Blaster X-Fi XtremeGamer
Creative Sound Blaster X-Fi XtremeMusic

Current release features:

* ALSA PCM Playback
* ALSA Record
* ALSA Mixer

Note:

* External I/O modules detection not included.

Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com>
Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1605 insertions, 0 deletions

diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c
new file mode 100644
index 000000000000..5f35374863fb
--- /dev/null
+++ b/sound/pci/ctxfi/ctatc.c
@@ -0,0 +1,1605 @@
+/**
+ * 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 "ctdrv.h"
+#include "cthardware.h"
+#include "ctsrc.h"
+#include "ctamixer.h"
+#include "ctdaio.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 const struct ct_atc_chip_sub_details atc_sub_details[NUM_CTCARDS] = {
+	[CTSB0760] = {.subsys = PCI_SUBSYS_CREATIVE_SB0760,
+		      .nm_model = "SB076x"},
+	[CTHENDRIX] = {.subsys = PCI_SUBSYS_CREATIVE_HENDRIX,
+		      .nm_model = "Hendrix"},
+	[CTSB08801] = {.subsys = PCI_SUBSYS_CREATIVE_SB08801,
+		      .nm_model = "SB0880"},
+	[CTSB08802] = {.subsys = PCI_SUBSYS_CREATIVE_SB08802,
+		      .nm_model = "SB0880"},
+	[CTSB08803] = {.subsys = PCI_SUBSYS_CREATIVE_SB08803,
+		      .nm_model = "SB0880"}
+};
+
+static struct ct_atc_chip_details atc_chip_details[] = {
+	{.vendor = PCI_VENDOR_CREATIVE, .device = PCI_DEVICE_CREATIVE_20K1,
+	 .sub_details = NULL,
+	 .nm_card = "X-Fi 20k1"},
+	{.vendor = PCI_VENDOR_CREATIVE, .device = PCI_DEVICE_CREATIVE_20K2,
+	 .sub_details = atc_sub_details,
+	 .nm_card = "X-Fi 20k2"},
+	{} /* terminator */
+};
+
+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"},
+	[REAR]		= { .create = ct_alsa_pcm_create,
+			    .destroy = NULL,
+			    .public_name = "Rear"},
+	[CLFE]		= { .create = ct_alsa_pcm_create,
+			    .destroy = NULL,
+			    .public_name = "Center/LFE"},
+	[SURROUND]	= { .create = ct_alsa_pcm_create,
+			    .destroy = NULL,
+			    .public_name = "Surround"},
+	[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)
+{
+	unsigned long flags;
+	struct snd_pcm_runtime *runtime;
+	struct ct_vm *vm;
+
+	if (NULL == apcm->substream)
+		return 0;
+
+	runtime = apcm->substream->runtime;
+	vm = atc->vm;
+
+	spin_lock_irqsave(&atc->vm_lock, flags);
+	apcm->vm_block = vm->map(vm, runtime->dma_area, runtime->dma_bytes);
+	spin_unlock_irqrestore(&atc->vm_lock, flags);
+
+	if (NULL == apcm->vm_block)
+		return -ENOENT;
+
+	return 0;
+}
+
+static void ct_unmap_audio_buffer(struct ct_atc *atc, struct ct_atc_pcm *apcm)
+{
+	unsigned long flags;
+	struct ct_vm *vm;
+
+	if (NULL == apcm->vm_block)
+		return;
+
+	vm = atc->vm;
+
+	spin_lock_irqsave(&atc->vm_lock, flags);
+	vm->unmap(vm, apcm->vm_block);
+	spin_unlock_irqrestore(&atc->vm_lock, flags);
+
+	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;
+	unsigned long flags;
+
+	spin_lock_irqsave(&atc->vm_lock, flags);
+	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);
+
+	spin_unlock_irqrestore(&atc->vm_lock, flags);
+
+	return phys_addr;
+}
+
+static unsigned int convert_format(snd_pcm_format_t snd_format)
+{
+	switch (snd_format) {
+	case SNDRV_PCM_FORMAT_U8:
+	case SNDRV_PCM_FORMAT_S8:
+		return SRC_SF_U8;
+	case SNDRV_PCM_FORMAT_S16_LE:
+	case SNDRV_PCM_FORMAT_U16_LE:
+		return SRC_SF_S16;
+	case SNDRV_PCM_FORMAT_S24_3LE:
+		return SRC_SF_S24;
+	case SNDRV_PCM_FORMAT_S24_LE:
+	case SNDRV_PCM_FORMAT_S32_LE:
+		return SRC_SF_S32;
+	default:
+		printk(KERN_ERR "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 = 0;
+	int b = 0;
+
+	/* 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 ((0x01d66666 == pitch) || (0x01d66667 == pitch)) {
+		/* pitch == 1.8375 */
+		return 2;
+	} else if (0x02000000 == pitch) {
+		/* 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 = NULL;
+	struct amixer *amixer = NULL;
+	int err = 0;
+	int n_amixer = apcm->substream->runtime->channels, i = 0;
+	int device = apcm->substream->pcm->device;
+	unsigned int pitch = 0;
+	unsigned long flags;
+
+	if (NULL != apcm->src) {
+		/* Prepared pcm playback */
+		return 0;
+	}
+
+	/* 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 (NULL == 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];
+		spin_lock_irqsave(&atc->atc_lock, flags);
+		amixer->ops->setup(amixer, &src->rsc,
+					INIT_VOL, atc->pcm[i+device*2]);
+		spin_unlock_irqrestore(&atc->atc_lock, flags);
+		src = src->ops->next_interleave(src);
+		if (NULL == src)
+			src = apcm->src;
+	}
+
+	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 = NULL;
+	int i = 0;
+
+	if (NULL != 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 (NULL != 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 (NULL != 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 (NULL != apcm->mono) {
+		sum_mgr->put_sum(sum_mgr, apcm->mono);
+		apcm->mono = NULL;
+	}
+
+	if (NULL != apcm->src) {
+		src_mgr->put_src(src_mgr, apcm->src);
+		apcm->src = NULL;
+	}
+
+	if (NULL != 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 = 0;
+	struct src *src = apcm->src;
+
+	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);
+
+	return 0;
+}
+
+static int atc_pcm_stop(struct ct_atc *atc, struct ct_atc_pcm *apcm)
+{
+	struct src *src = NULL;
+	int i = 0;
+
+	src = apcm->src;
+	src->ops->set_bm(src, 0);
+	src->ops->set_state(src, SRC_STATE_OFF);
+	src->ops->commit_write(src);
+
+	if (NULL != 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 = 0, max_cisz = 0;
+	int position = 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 = 0;
+
+	/* 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 = NULL;
+	struct srcimp_desc srcimp_dsc = {0};
+	struct srcimp *srcimp = NULL;
+	struct amixer_desc mix_dsc = {0};
+	struct sum_desc sum_dsc = {0};
+	unsigned int pitch = 0;
+	int multi = 0, err = 0, i = 0;
+	int n_srcimp = 0, n_amixer = 0, n_srcc = 0, n_sum = 0;
+	struct src_node_conf_t src_node_conf[2] = {{0} };
+
+	/* 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 (NULL == apcm->srccs)
+			return -ENOMEM;
+	}
+	if (n_amixer) {
+		apcm->amixers = kzalloc(sizeof(void *)*n_amixer, GFP_KERNEL);
+		if (NULL == apcm->amixers) {
+			err = -ENOMEM;
+			goto error1;
+		}
+	}
+	apcm->srcimps = kzalloc(sizeof(void *)*n_srcimp, GFP_KERNEL);
+	if (NULL == 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 = NULL;
+	struct amixer *amixer = NULL;
+	struct srcimp *srcimp = NULL;
+	struct ct_mixer *mixer = atc->mixer;
+	struct sum *mono = NULL;
+	struct rsc *out_ports[8] = {NULL};
+	int err = 0, i = 0, j = 0, n_sum = 0, multi = 0;
+	unsigned int pitch = 0;
+	int mix_base = 0, imp_base = 0;
+
+	if (NULL != apcm->src) {
+		/* Prepared pcm capture */
+		return 0;
+	}
+
+	/* 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]);
+		}
+	}
+
+	return 0;
+}
+
+static int atc_pcm_capture_start(struct ct_atc *atc, struct ct_atc_pcm *apcm)
+{
+	struct src *src = NULL;
+	struct src_mgr *src_mgr = atc->rsc_mgrs[SRC];
+	int i = 0, multi = 0;
+
+	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);
+
+	return 0;
+}
+
+static int
+atc_pcm_capture_position(struct ct_atc *atc, struct ct_atc_pcm *apcm)
+{
+	struct src *src = apcm->src;
+
+	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 = NULL;
+	int err = 0;
+	int n_amixer = apcm->substream->runtime->channels, i = 0;
+	unsigned int pitch = 0, rsr = atc->pll_rate;
+
+	/* 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 (NULL == 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
+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 long flags;
+	unsigned int rate = apcm->substream->runtime->rate;
+	unsigned int status = 0;
+	int err = 0;
+	unsigned char iec958_con_fs = 0;
+
+	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;
+	}
+
+	spin_lock_irqsave(&atc->atc_lock, flags);
+	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 = ((struct hw *)atc->hw)->pll_init(atc->hw, rate);
+		atc->pll_rate = err ? 0 : rate;
+	}
+	spin_unlock_irqrestore(&atc->atc_lock, flags);
+
+	return err;
+}
+
+static int
+spdif_passthru_playback_prepare(struct ct_atc *atc, struct ct_atc_pcm *apcm)
+{
+	struct src *src = NULL;
+	struct amixer *amixer = NULL;
+	struct dao *dao = NULL;
+	int err = 0;
+	int i = 0;
+	unsigned long flags;
+
+	if (NULL != apcm->src)
+		return 0;
+
+	/* 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 (NULL == src)
+			src = apcm->src;
+	}
+	/* Connect to SPDIFOO */
+	spin_lock_irqsave(&atc->atc_lock, flags);
+	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);
+	spin_unlock_irqrestore(&atc->atc_lock, flags);
+
+	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 = NULL;
+
+	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 = NULL;
+
+	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)
+{
+	unsigned long flags;
+	struct dao_desc da_dsc = {0};
+	struct dao *dao = NULL;
+	int err = 0;
+	struct ct_mixer *mixer = atc->mixer;
+	struct rsc *rscs[2] = {NULL};
+	unsigned int spos = 0;
+
+	spin_lock_irqsave(&atc->atc_lock, flags);
+	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 = ((struct hw *)atc->hw)->pll_init(atc->hw,
+							       atc->rsr);
+			atc->pll_rate = err ? 0 : atc->rsr;
+		}
+	}
+	dao->ops->set_spos(dao, spos);
+	dao->ops->commit_write(dao);
+	spin_unlock_irqrestore(&atc->atc_lock, flags);
+
+	return err;
+}
+
+static int ct_atc_destroy(struct ct_atc *atc)
+{
+	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;
+	int i = 0;
+
+	if (NULL == atc)
+		return 0;
+
+	/* Stop hardware and disable all interrupts */
+	if (NULL != atc->hw)
+		((struct hw *)atc->hw)->card_stop(atc->hw);
+
+	/* Destroy internal mixer objects */
+	if (NULL != 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);
+		ct_mixer_destroy(atc->mixer);
+	}
+
+	if (NULL != 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);
+	}
+
+	if (NULL != 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);
+	}
+
+	if (NULL != 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);
+	}
+
+	if (NULL != 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);
+	}
+
+	for (i = 0; i < NUM_RSCTYP; i++) {
+		if ((NULL != rsc_mgr_funcs[i].destroy) &&
+		    (NULL != atc->rsc_mgrs[i]))
+			rsc_mgr_funcs[i].destroy(atc->rsc_mgrs[i]);
+
+	}
+
+	if (NULL != atc->hw)
+		destroy_hw_obj((struct hw *)atc->hw);
+
+	/* Destroy device virtual memory manager object */
+	if (NULL != 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 atc_identify_card(struct ct_atc *atc)
+{
+	u16 subsys = 0;
+	u8 revision = 0;
+	struct pci_dev *pci = atc->pci;
+	const struct ct_atc_chip_details *d;
+	enum CTCARDS i;
+
+	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsys);
+	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
+	atc->chip_details = NULL;
+	atc->model = NUM_CTCARDS;
+	for (d = atc_chip_details; d->vendor; d++) {
+		if (d->vendor != pci->vendor || d->device != pci->device)
+			continue;
+
+		if (NULL == d->sub_details) {
+			atc->chip_details = d;
+			break;
+		}
+		for (i = 0; i < NUM_CTCARDS; i++) {
+			if ((d->sub_details[i].subsys == subsys) ||
+			    (((subsys & 0x6000) == 0x6000) &&
+			    ((d->sub_details[i].subsys & 0x6000) == 0x6000))) {
+				atc->model = i;
+				break;
+			}
+		}
+		if (i >= NUM_CTCARDS)
+			continue;
+
+		atc->chip_details = d;
+		break;
+		/* not take revision into consideration now */
+	}
+	if (!d->vendor)
+		return -ENOENT;
+
+	return 0;
+}
+
+static int ct_create_alsa_devs(struct ct_atc *atc)
+{
+	enum CTALSADEVS i;
+	struct hw *hw = atc->hw;
+	int err;
+
+	switch (hw->get_chip_type(hw)) {
+	case ATC20K1:
+		alsa_dev_funcs[MIXER].public_name = "20K1";
+		break;
+	case ATC20K2:
+		alsa_dev_funcs[MIXER].public_name = "20K2";
+		break;
+	default:
+		alsa_dev_funcs[MIXER].public_name = "Unknown";
+		break;
+	}
+
+	for (i = 0; i < NUM_CTALSADEVS; i++) {
+		if (NULL == 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 "Creating alsa device %d failed!\n", i);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static int atc_create_hw_devs(struct ct_atc *atc)
+{
+	struct hw *hw = NULL;
+	struct card_conf info = {0};
+	int i = 0, err = 0;
+
+	err = create_hw_obj(atc->pci, &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 (NULL == rsc_mgr_funcs[i].create)
+			continue;
+
+		err = rsc_mgr_funcs[i].create(atc->hw, &atc->rsc_mgrs[i]);
+		if (err) {
+			printk(KERN_ERR "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 = NULL;
+	struct src_desc src_dsc = {0};
+	struct src_mgr *src_mgr = NULL;
+	struct srcimp_desc srcimp_dsc = {0};
+	struct srcimp_mgr *srcimp_mgr = NULL;
+	struct sum_desc sum_dsc = {0};
+	struct sum_mgr *sum_mgr = NULL;
+	int err = 0, i = 0;
+	unsigned short subsys_id = 0;
+
+	atc->daios = kzalloc(sizeof(void *)*(DAIONUM), GFP_KERNEL);
+	if (NULL == atc->daios)
+		return -ENOMEM;
+
+	atc->srcs = kzalloc(sizeof(void *)*(2*2), GFP_KERNEL);
+	if (NULL == atc->srcs)
+		return -ENOMEM;
+
+	atc->srcimps = kzalloc(sizeof(void *)*(2*2), GFP_KERNEL);
+	if (NULL == atc->srcimps)
+		return -ENOMEM;
+
+	atc->pcm = kzalloc(sizeof(void *)*(2*4), GFP_KERNEL);
+	if (NULL == 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 "Failed to get DAIO "
+					"resource %d!!!\n", i);
+			return err;
+		}
+		atc->n_daio++;
+	}
+	pci_read_config_word(atc->pci, PCI_SUBSYSTEM_ID, &subsys_id);
+	if ((subsys_id == 0x0029) || (subsys_id == 0x0031)) {
+		/* SB073x cards */
+		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 "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++;
+	}
+
+	err = ct_mixer_create(atc, (struct ct_mixer **)&atc->mixer);
+	if (err) {
+		printk(KERN_ERR "Failed to create mixer obj!!!\n");
+		return err;
+	}
+
+	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 = NULL;
+	struct srcimp *srcimp = NULL;
+	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 = NULL;
+	struct dao *dao = NULL;
+	struct src *src = NULL;
+	struct sum *sum = NULL;
+	struct ct_mixer *mixer = NULL;
+	struct rsc *rscs[2] = {NULL};
+	int i = 0, j = 0;
+
+	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);
+	}
+}
+
+static void atc_set_ops(struct ct_atc *atc)
+{
+	/* Set operations */
+	atc->map_audio_buffer = ct_map_audio_buffer;
+	atc->unmap_audio_buffer = ct_unmap_audio_buffer;
+	atc->pcm_playback_prepare = atc_pcm_playback_prepare;
+	atc->pcm_release_resources = atc_pcm_release_resources;
+	atc->pcm_playback_start = atc_pcm_playback_start;
+	atc->pcm_playback_stop = atc_pcm_stop;
+	atc->pcm_playback_position = atc_pcm_playback_position;
+	atc->pcm_capture_prepare = atc_pcm_capture_prepare;
+	atc->pcm_capture_start = atc_pcm_capture_start;
+	atc->pcm_capture_stop = atc_pcm_stop;
+	atc->pcm_capture_position = atc_pcm_capture_position;
+	atc->spdif_passthru_playback_prepare = spdif_passthru_playback_prepare;
+	atc->get_ptp_phys = atc_get_ptp_phys;
+	atc->select_line_in = atc_select_line_in;
+	atc->select_mic_in = atc_select_mic_in;
+	atc->select_digit_io = atc_select_digit_io;
+	atc->line_front_unmute = atc_line_front_unmute;
+	atc->line_surround_unmute = atc_line_surround_unmute;
+	atc->line_clfe_unmute = atc_line_clfe_unmute;
+	atc->line_rear_unmute = atc_line_rear_unmute;
+	atc->line_in_unmute = atc_line_in_unmute;
+	atc->spdif_out_unmute = atc_spdif_out_unmute;
+	atc->spdif_in_unmute = atc_spdif_in_unmute;
+	atc->spdif_out_get_status = atc_spdif_out_get_status;
+	atc->spdif_out_set_status = atc_spdif_out_set_status;
+	atc->spdif_out_passthru = atc_spdif_out_passthru;
+	atc->have_digit_io_switch = atc_have_digit_io_switch;
+}
+
+/**
+ *  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 ct_atc_create(struct snd_card *card, struct pci_dev *pci,
+		  unsigned int rsr, unsigned int msr, struct ct_atc **ratc)
+{
+	struct ct_atc *atc = NULL;
+	static struct snd_device_ops ops = {
+		.dev_free = atc_dev_free,
+	};
+	int err = 0;
+
+	*ratc = NULL;
+
+	atc = kzalloc(sizeof(*atc), GFP_KERNEL);
+	if (NULL == atc)
+		return -ENOMEM;
+
+	atc->card = card;
+	atc->pci = pci;
+	atc->rsr = rsr;
+	atc->msr = msr;
+
+	/* Set operations */
+	atc_set_ops(atc);
+
+	spin_lock_init(&atc->atc_lock);
+	spin_lock_init(&atc->vm_lock);
+
+	/* 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;
+
+	/* Get resources */
+	err = atc_get_resources(atc);
+	if (err < 0)
+		goto error1;
+
+	/* Build topology */
+	atc_connect_resources(atc);
+
+	atc->create_alsa_devs = ct_create_alsa_devs;
+
+	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 "Something wrong!!!\n");
+	return err;
+}
+