// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license.  When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//

#include <linux/firmware.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include <uapi/sound/sof/tokens.h>
#include "sof-priv.h"
#include "ops.h"

#define COMP_ID_UNASSIGNED              0xffffffff
/*
 * Constants used in the computation of linear volume gain
 * from dB gain 20th root of 10 in Q1.16 fixed-point notation
 */
#define VOL_TWENTIETH_ROOT_OF_TEN       73533
/* 40th root of 10 in Q1.16 fixed-point notation*/
#define VOL_FORTIETH_ROOT_OF_TEN        69419
/*
 * Volume fractional word length define to 16 sets
 * the volume linear gain value to use Qx.16 format
 */
#define VOLUME_FWL      16
/* 0.5 dB step value in topology TLV */
#define VOL_HALF_DB_STEP        50
/* Full volume for default values */
#define VOL_ZERO_DB     BIT(VOLUME_FWL)

/* TLV data items */
#define TLV_ITEMS       3
#define TLV_MIN         0
#define TLV_STEP        1
#define TLV_MUTE        2

/* size of tplg abi in byte */
#define SOF_TPLG_ABI_SIZE 3

/* send pcm params ipc */
static int ipc_pcm_params(struct snd_sof_widget *swidget, int dir)
{
        struct sof_ipc_pcm_params_reply ipc_params_reply;
        struct snd_sof_dev *sdev = swidget->sdev;
        struct sof_ipc_pcm_params pcm;
        struct snd_pcm_hw_params *params;
        struct snd_sof_pcm *spcm;
        int ret = 0;

        memset(&pcm, 0, sizeof(pcm));

        /* get runtime PCM params using widget's stream name */
        spcm = snd_sof_find_spcm_name(sdev, swidget->widget->sname);
        if (!spcm) {
                dev_err(sdev->dev, "error: cannot find PCM for %s\n",
                        swidget->widget->name);
                return -EINVAL;
        }

        params = &spcm->params[dir];

        /* set IPC PCM params */
        pcm.hdr.size = sizeof(pcm);
        pcm.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | SOF_IPC_STREAM_PCM_PARAMS;
        pcm.comp_id = swidget->comp_id;
        pcm.params.hdr.size = sizeof(pcm.params);
        pcm.params.direction = dir;
        pcm.params.sample_valid_bytes = params_width(params) >> 3;
        pcm.params.buffer_fmt = SOF_IPC_BUFFER_INTERLEAVED;
        pcm.params.rate = params_rate(params);
        pcm.params.channels = params_channels(params);
        pcm.params.host_period_bytes = params_period_bytes(params);

        /* set format */
        switch (params_format(params)) {
        case SNDRV_PCM_FORMAT_S16:
                pcm.params.frame_fmt = SOF_IPC_FRAME_S16_LE;
                break;
        case SNDRV_PCM_FORMAT_S24:
                pcm.params.frame_fmt = SOF_IPC_FRAME_S24_4LE;
                break;
        case SNDRV_PCM_FORMAT_S32:
                pcm.params.frame_fmt = SOF_IPC_FRAME_S32_LE;
                break;
        default:
                return -EINVAL;
        }

        /* send IPC to the DSP */
        ret = sof_ipc_tx_message(sdev->ipc, pcm.hdr.cmd, &pcm, sizeof(pcm),
                                 &ipc_params_reply, sizeof(ipc_params_reply));
        if (ret < 0)
                dev_err(sdev->dev, "error: pcm params failed for %s\n",
                        swidget->widget->name);

        return ret;
}

 /* send stream trigger ipc */
static int ipc_trigger(struct snd_sof_widget *swidget, int cmd)
{
        struct snd_sof_dev *sdev = swidget->sdev;
        struct sof_ipc_stream stream;
        struct sof_ipc_reply reply;
        int ret = 0;

        /* set IPC stream params */
        stream.hdr.size = sizeof(stream);
        stream.hdr.cmd = SOF_IPC_GLB_STREAM_MSG | cmd;
        stream.comp_id = swidget->comp_id;

        /* send IPC to the DSP */
        ret = sof_ipc_tx_message(sdev->ipc, stream.hdr.cmd, &stream,
                                 sizeof(stream), &reply, sizeof(reply));
        if (ret < 0)
                dev_err(sdev->dev, "error: failed to trigger %s\n",
                        swidget->widget->name);

        return ret;
}

static int sof_keyword_dapm_event(struct snd_soc_dapm_widget *w,
                                  struct snd_kcontrol *k, int event)
{
        struct snd_sof_widget *swidget = w->dobj.private;
        struct snd_sof_dev *sdev;
        int ret = 0;

        if (!swidget)
                return 0;

        sdev = swidget->sdev;

        dev_dbg(sdev->dev, "received event %d for widget %s\n",
                event, w->name);

        /* process events */
        switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
                /* set pcm params */
                ret = ipc_pcm_params(swidget, SOF_IPC_STREAM_CAPTURE);
                if (ret < 0) {
                        dev_err(sdev->dev,
                                "error: failed to set pcm params for widget %s\n",
                                swidget->widget->name);
                        break;
                }

                /* start trigger */
                ret = ipc_trigger(swidget, SOF_IPC_STREAM_TRIG_START);
                if (ret < 0)
                        dev_err(sdev->dev,
                                "error: failed to trigger widget %s\n",
                                swidget->widget->name);
                break;
        case SND_SOC_DAPM_POST_PMD:
                /* stop trigger */
                ret = ipc_trigger(swidget, SOF_IPC_STREAM_TRIG_STOP);
                if (ret < 0)
                        dev_err(sdev->dev,
                                "error: failed to trigger widget %s\n",
                                swidget->widget->name);

                /* pcm free */
                ret = ipc_trigger(swidget, SOF_IPC_STREAM_PCM_FREE);
                if (ret < 0)
                        dev_err(sdev->dev,
                                "error: failed to trigger widget %s\n",
                                swidget->widget->name);
                break;
        default:
                break;
        }

        return ret;
}

/* event handlers for keyword detect component */
static const struct snd_soc_tplg_widget_events sof_kwd_events[] = {
        {SOF_KEYWORD_DETECT_DAPM_EVENT, sof_keyword_dapm_event},
};

static inline int get_tlv_data(const int *p, int tlv[TLV_ITEMS])
{
        /* we only support dB scale TLV type at the moment */
        if ((int)p[SNDRV_CTL_TLVO_TYPE] != SNDRV_CTL_TLVT_DB_SCALE)
                return -EINVAL;

        /* min value in topology tlv data is multiplied by 100 */
        tlv[TLV_MIN] = (int)p[SNDRV_CTL_TLVO_DB_SCALE_MIN] / 100;

        /* volume steps */
        tlv[TLV_STEP] = (int)(p[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] &
                                TLV_DB_SCALE_MASK);

        /* mute ON/OFF */
        if ((p[SNDRV_CTL_TLVO_DB_SCALE_MUTE_AND_STEP] &
                TLV_DB_SCALE_MUTE) == 0)
                tlv[TLV_MUTE] = 0;
        else
                tlv[TLV_MUTE] = 1;

        return 0;
}

/*
 * Function to truncate an unsigned 64-bit number
 * by x bits and return 32-bit unsigned number. This
 * function also takes care of rounding while truncating
 */
static inline u32 vol_shift_64(u64 i, u32 x)
{
        /* do not truncate more than 32 bits */
        if (x > 32)
                x = 32;

        if (x == 0)
                return (u32)i;

        return (u32)(((i >> (x - 1)) + 1) >> 1);
}

/*
 * Function to compute a ^ exp where,
 * a is a fractional number represented by a fixed-point
 * integer with a fractional world length of "fwl"
 * exp is an integer
 * fwl is the fractional word length
 * Return value is a fractional number represented by a
 * fixed-point integer with a fractional word length of "fwl"
 */
static u32 vol_pow32(u32 a, int exp, u32 fwl)
{
        int i, iter;
        u32 power = 1 << fwl;
        u64 numerator;

        /* if exponent is 0, return 1 */
        if (exp == 0)
                return power;

        /* determine the number of iterations based on the exponent */
        if (exp < 0)
                iter = exp * -1;
        else
                iter = exp;

        /* mutiply a "iter" times to compute power */
        for (i = 0; i < iter; i++) {
                /*
                 * Product of 2 Qx.fwl fixed-point numbers yields a Q2*x.2*fwl
                 * Truncate product back to fwl fractional bits with rounding
                 */
                power = vol_shift_64((u64)power * a, fwl);
        }

        if (exp > 0) {
                /* if exp is positive, return the result */
                return power;
        }

        /* if exp is negative, return the multiplicative inverse */
        numerator = (u64)1 << (fwl << 1);
        do_div(numerator, power);

        return (u32)numerator;
}

/*
 * Function to calculate volume gain from TLV data.
 * This function can only handle gain steps that are multiples of 0.5 dB
 */
static u32 vol_compute_gain(u32 value, int *tlv)
{
        int dB_gain;
        u32 linear_gain;
        int f_step;

        /* mute volume */
        if (value == 0 && tlv[TLV_MUTE])
                return 0;

        /*
         * compute dB gain from tlv. tlv_step
         * in topology is multiplied by 100
         */
        dB_gain = tlv[TLV_MIN] + (value * tlv[TLV_STEP]) / 100;

        /*
         * compute linear gain represented by fixed-point
         * int with VOLUME_FWL fractional bits
         */
        linear_gain = vol_pow32(VOL_TWENTIETH_ROOT_OF_TEN, dB_gain, VOLUME_FWL);

        /* extract the fractional part of volume step */
        f_step = tlv[TLV_STEP] - (tlv[TLV_STEP] / 100);

        /* if volume step is an odd multiple of 0.5 dB */
        if (f_step == VOL_HALF_DB_STEP && (value & 1))
                linear_gain = vol_shift_64((u64)linear_gain *
                                                  VOL_FORTIETH_ROOT_OF_TEN,
                                                  VOLUME_FWL);

        return linear_gain;
}

/*
 * Set up volume table for kcontrols from tlv data
 * "size" specifies the number of entries in the table
 */
static int set_up_volume_table(struct snd_sof_control *scontrol,
                               int tlv[TLV_ITEMS], int size)
{
        int j;

        /* init the volume table */
        scontrol->volume_table = kcalloc(size, sizeof(u32), GFP_KERNEL);
        if (!scontrol->volume_table)
                return -ENOMEM;

        /* populate the volume table */
        for (j = 0; j < size ; j++)
                scontrol->volume_table[j] = vol_compute_gain(j, tlv);

        return 0;
}

struct sof_dai_types {
        const char *name;
        enum sof_ipc_dai_type type;
};

static const struct sof_dai_types sof_dais[] = {
        {"SSP", SOF_DAI_INTEL_SSP},
        {"HDA", SOF_DAI_INTEL_HDA},
        {"DMIC", SOF_DAI_INTEL_DMIC},
};

static enum sof_ipc_dai_type find_dai(const char *name)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(sof_dais); i++) {
                if (strcmp(name, sof_dais[i].name) == 0)
                        return sof_dais[i].type;
        }

        return SOF_DAI_INTEL_NONE;
}

/*
 * Supported Frame format types and lookup, add new ones to end of list.
 */

struct sof_frame_types {
        const char *name;
        enum sof_ipc_frame frame;
};

static const struct sof_frame_types sof_frames[] = {
        {"s16le", SOF_IPC_FRAME_S16_LE},
        {"s24le", SOF_IPC_FRAME_S24_4LE},
        {"s32le", SOF_IPC_FRAME_S32_LE},
        {"float", SOF_IPC_FRAME_FLOAT},
};

static enum sof_ipc_frame find_format(const char *name)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(sof_frames); i++) {
                if (strcmp(name, sof_frames[i].name) == 0)
                        return sof_frames[i].frame;
        }

        /* use s32le if nothing is specified */
        return SOF_IPC_FRAME_S32_LE;
}

struct sof_process_types {
        const char *name;
        enum sof_ipc_process_type type;
        enum sof_comp_type comp_type;
};

static const struct sof_process_types sof_process[] = {
        {"EQFIR", SOF_PROCESS_EQFIR, SOF_COMP_EQ_FIR},
        {"EQIIR", SOF_PROCESS_EQIIR, SOF_COMP_EQ_IIR},
        {"KEYWORD_DETECT", SOF_PROCESS_KEYWORD_DETECT, SOF_COMP_KEYWORD_DETECT},
        {"KPB", SOF_PROCESS_KPB, SOF_COMP_KPB},
        {"CHAN_SELECTOR", SOF_PROCESS_CHAN_SELECTOR, SOF_COMP_SELECTOR},
};

static enum sof_ipc_process_type find_process(const char *name)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(sof_process); i++) {
                if (strcmp(name, sof_process[i].name) == 0)
                        return sof_process[i].type;
        }

        return SOF_PROCESS_NONE;
}

static enum sof_comp_type find_process_comp_type(enum sof_ipc_process_type type)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(sof_process); i++) {
                if (sof_process[i].type == type)
                        return sof_process[i].comp_type;
        }

        return SOF_COMP_NONE;
}

/*
 * Standard Kcontrols.
 */

static int sof_control_load_volume(struct snd_soc_component *scomp,
                                   struct snd_sof_control *scontrol,
                                   struct snd_kcontrol_new *kc,
                                   struct snd_soc_tplg_ctl_hdr *hdr)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_mixer_control *mc =
                container_of(hdr, struct snd_soc_tplg_mixer_control, hdr);
        struct sof_ipc_ctrl_data *cdata;
        int tlv[TLV_ITEMS];
        unsigned int i;
        int ret;

        /* validate topology data */
        if (le32_to_cpu(mc->num_channels) > SND_SOC_TPLG_MAX_CHAN)
                return -EINVAL;

        /* init the volume get/put data */
        scontrol->size = sizeof(struct sof_ipc_ctrl_data) +
                         sizeof(struct sof_ipc_ctrl_value_chan) *
                         le32_to_cpu(mc->num_channels);
        scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL);
        if (!scontrol->control_data)
                return -ENOMEM;

        scontrol->comp_id = sdev->next_comp_id;
        scontrol->num_channels = le32_to_cpu(mc->num_channels);

        /* set cmd for mixer control */
        if (le32_to_cpu(mc->max) == 1) {
                scontrol->cmd = SOF_CTRL_CMD_SWITCH;
                goto out;
        }

        scontrol->cmd = SOF_CTRL_CMD_VOLUME;

        /* extract tlv data */
        if (get_tlv_data(kc->tlv.p, tlv) < 0) {
                dev_err(sdev->dev, "error: invalid TLV data\n");
                return -EINVAL;
        }

        /* set up volume table */
        ret = set_up_volume_table(scontrol, tlv, le32_to_cpu(mc->max) + 1);
        if (ret < 0) {
                dev_err(sdev->dev, "error: setting up volume table\n");
                return ret;
        }

        /* set default volume values to 0dB in control */
        cdata = scontrol->control_data;
        for (i = 0; i < scontrol->num_channels; i++) {
                cdata->chanv[i].channel = i;
                cdata->chanv[i].value = VOL_ZERO_DB;
        }

out:
        dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n",
                scontrol->comp_id, scontrol->num_channels);

        return 0;
}

static int sof_control_load_enum(struct snd_soc_component *scomp,
                                 struct snd_sof_control *scontrol,
                                 struct snd_kcontrol_new *kc,
                                 struct snd_soc_tplg_ctl_hdr *hdr)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_enum_control *ec =
                container_of(hdr, struct snd_soc_tplg_enum_control, hdr);

        /* validate topology data */
        if (le32_to_cpu(ec->num_channels) > SND_SOC_TPLG_MAX_CHAN)
                return -EINVAL;

        /* init the enum get/put data */
        scontrol->size = sizeof(struct sof_ipc_ctrl_data) +
                         sizeof(struct sof_ipc_ctrl_value_chan) *
                         le32_to_cpu(ec->num_channels);
        scontrol->control_data = kzalloc(scontrol->size, GFP_KERNEL);
        if (!scontrol->control_data)
                return -ENOMEM;

        scontrol->comp_id = sdev->next_comp_id;
        scontrol->num_channels = le32_to_cpu(ec->num_channels);

        scontrol->cmd = SOF_CTRL_CMD_ENUM;

        dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d comp_id %d\n",
                scontrol->comp_id, scontrol->num_channels, scontrol->comp_id);

        return 0;
}

static int sof_control_load_bytes(struct snd_soc_component *scomp,
                                  struct snd_sof_control *scontrol,
                                  struct snd_kcontrol_new *kc,
                                  struct snd_soc_tplg_ctl_hdr *hdr)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct sof_ipc_ctrl_data *cdata;
        struct snd_soc_tplg_bytes_control *control =
                container_of(hdr, struct snd_soc_tplg_bytes_control, hdr);
        struct soc_bytes_ext *sbe = (struct soc_bytes_ext *)kc->private_value;
        int max_size = sbe->max;

        if (le32_to_cpu(control->priv.size) > max_size) {
                dev_err(sdev->dev, "err: bytes data size %d exceeds max %d.\n",
                        control->priv.size, max_size);
                return -EINVAL;
        }

        /* init the get/put bytes data */
        scontrol->size = sizeof(struct sof_ipc_ctrl_data) +
                le32_to_cpu(control->priv.size);
        scontrol->control_data = kzalloc(max_size, GFP_KERNEL);
        cdata = scontrol->control_data;
        if (!scontrol->control_data)
                return -ENOMEM;

        scontrol->comp_id = sdev->next_comp_id;
        scontrol->cmd = SOF_CTRL_CMD_BINARY;

        dev_dbg(sdev->dev, "tplg: load kcontrol index %d chans %d\n",
                scontrol->comp_id, scontrol->num_channels);

        if (le32_to_cpu(control->priv.size) > 0) {
                memcpy(cdata->data, control->priv.data,
                       le32_to_cpu(control->priv.size));

                if (cdata->data->magic != SOF_ABI_MAGIC) {
                        dev_err(sdev->dev, "error: Wrong ABI magic 0x%08x.\n",
                                cdata->data->magic);
                        return -EINVAL;
                }
                if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION,
                                                 cdata->data->abi)) {
                        dev_err(sdev->dev,
                                "error: Incompatible ABI version 0x%08x.\n",
                                cdata->data->abi);
                        return -EINVAL;
                }
                if (cdata->data->size + sizeof(const struct sof_abi_hdr) !=
                    le32_to_cpu(control->priv.size)) {
                        dev_err(sdev->dev,
                                "error: Conflict in bytes vs. priv size.\n");
                        return -EINVAL;
                }
        }
        return 0;
}

/*
 * Topology Token Parsing.
 * New tokens should be added to headers and parsing tables below.
 */

struct sof_topology_token {
        u32 token;
        u32 type;
        int (*get_token)(void *elem, void *object, u32 offset, u32 size);
        u32 offset;
        u32 size;
};

static int get_token_u32(void *elem, void *object, u32 offset, u32 size)
{
        struct snd_soc_tplg_vendor_value_elem *velem = elem;
        u32 *val = (u32 *)((u8 *)object + offset);

        *val = le32_to_cpu(velem->value);
        return 0;
}

static int get_token_u16(void *elem, void *object, u32 offset, u32 size)
{
        struct snd_soc_tplg_vendor_value_elem *velem = elem;
        u16 *val = (u16 *)((u8 *)object + offset);

        *val = (u16)le32_to_cpu(velem->value);
        return 0;
}

static int get_token_comp_format(void *elem, void *object, u32 offset, u32 size)
{
        struct snd_soc_tplg_vendor_string_elem *velem = elem;
        u32 *val = (u32 *)((u8 *)object + offset);

        *val = find_format(velem->string);
        return 0;
}

static int get_token_dai_type(void *elem, void *object, u32 offset, u32 size)
{
        struct snd_soc_tplg_vendor_string_elem *velem = elem;
        u32 *val = (u32 *)((u8 *)object + offset);

        *val = find_dai(velem->string);
        return 0;
}

static int get_token_process_type(void *elem, void *object, u32 offset,
                                  u32 size)
{
        struct snd_soc_tplg_vendor_string_elem *velem = elem;
        u32 *val = (u32 *)((u8 *)object + offset);

        *val = find_process(velem->string);
        return 0;
}

/* Buffers */
static const struct sof_topology_token buffer_tokens[] = {
        {SOF_TKN_BUF_SIZE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_buffer, size), 0},
        {SOF_TKN_BUF_CAPS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_buffer, caps), 0},
};

/* DAI */
static const struct sof_topology_token dai_tokens[] = {
        {SOF_TKN_DAI_TYPE, SND_SOC_TPLG_TUPLE_TYPE_STRING, get_token_dai_type,
                offsetof(struct sof_ipc_comp_dai, type), 0},
        {SOF_TKN_DAI_INDEX, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_dai, dai_index), 0},
        {SOF_TKN_DAI_DIRECTION, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_dai, direction), 0},
};

/* BE DAI link */
static const struct sof_topology_token dai_link_tokens[] = {
        {SOF_TKN_DAI_TYPE, SND_SOC_TPLG_TUPLE_TYPE_STRING, get_token_dai_type,
                offsetof(struct sof_ipc_dai_config, type), 0},
        {SOF_TKN_DAI_INDEX, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_config, dai_index), 0},
};

/* scheduling */
static const struct sof_topology_token sched_tokens[] = {
        {SOF_TKN_SCHED_PERIOD, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, period), 0},
        {SOF_TKN_SCHED_PRIORITY, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, priority), 0},
        {SOF_TKN_SCHED_MIPS, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, period_mips), 0},
        {SOF_TKN_SCHED_CORE, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, core), 0},
        {SOF_TKN_SCHED_FRAMES, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, frames_per_sched), 0},
        {SOF_TKN_SCHED_TIME_DOMAIN, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_pipe_new, time_domain), 0},
};

/* volume */
static const struct sof_topology_token volume_tokens[] = {
        {SOF_TKN_VOLUME_RAMP_STEP_TYPE, SND_SOC_TPLG_TUPLE_TYPE_WORD,
                get_token_u32, offsetof(struct sof_ipc_comp_volume, ramp), 0},
        {SOF_TKN_VOLUME_RAMP_STEP_MS,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_volume, initial_ramp), 0},
};

/* SRC */
static const struct sof_topology_token src_tokens[] = {
        {SOF_TKN_SRC_RATE_IN, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_src, source_rate), 0},
        {SOF_TKN_SRC_RATE_OUT, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_src, sink_rate), 0},
};

/* Tone */
static const struct sof_topology_token tone_tokens[] = {
};

/* EFFECT */
static const struct sof_topology_token process_tokens[] = {
        {SOF_TKN_PROCESS_TYPE, SND_SOC_TPLG_TUPLE_TYPE_STRING,
                get_token_process_type,
                offsetof(struct sof_ipc_comp_process, type), 0},
};

/* PCM */
static const struct sof_topology_token pcm_tokens[] = {
        {SOF_TKN_PCM_DMAC_CONFIG, SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_host, dmac_config), 0},
};

/* Generic components */
static const struct sof_topology_token comp_tokens[] = {
        {SOF_TKN_COMP_PERIOD_SINK_COUNT,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_config, periods_sink), 0},
        {SOF_TKN_COMP_PERIOD_SOURCE_COUNT,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_comp_config, periods_source), 0},
        {SOF_TKN_COMP_FORMAT,
                SND_SOC_TPLG_TUPLE_TYPE_STRING, get_token_comp_format,
                offsetof(struct sof_ipc_comp_config, frame_fmt), 0},
};

/* SSP */
static const struct sof_topology_token ssp_tokens[] = {
        {SOF_TKN_INTEL_SSP_CLKS_CONTROL,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_ssp_params, clks_control), 0},
        {SOF_TKN_INTEL_SSP_MCLK_ID,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_ssp_params, mclk_id), 0},
        {SOF_TKN_INTEL_SSP_SAMPLE_BITS, SND_SOC_TPLG_TUPLE_TYPE_WORD,
                get_token_u32,
                offsetof(struct sof_ipc_dai_ssp_params, sample_valid_bits), 0},
        {SOF_TKN_INTEL_SSP_FRAME_PULSE_WIDTH, SND_SOC_TPLG_TUPLE_TYPE_SHORT,
                get_token_u16,
                offsetof(struct sof_ipc_dai_ssp_params, frame_pulse_width), 0},
        {SOF_TKN_INTEL_SSP_QUIRKS, SND_SOC_TPLG_TUPLE_TYPE_WORD,
                get_token_u32,
                offsetof(struct sof_ipc_dai_ssp_params, quirks), 0},
        {SOF_TKN_INTEL_SSP_TDM_PADDING_PER_SLOT, SND_SOC_TPLG_TUPLE_TYPE_BOOL,
                get_token_u16,
                offsetof(struct sof_ipc_dai_ssp_params,
                         tdm_per_slot_padding_flag), 0},

};

/* DMIC */
static const struct sof_topology_token dmic_tokens[] = {
        {SOF_TKN_INTEL_DMIC_DRIVER_VERSION,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_dmic_params, driver_ipc_version),
                0},
        {SOF_TKN_INTEL_DMIC_CLK_MIN,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_dmic_params, pdmclk_min), 0},
        {SOF_TKN_INTEL_DMIC_CLK_MAX,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_dmic_params, pdmclk_max), 0},
        {SOF_TKN_INTEL_DMIC_SAMPLE_RATE,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_dmic_params, fifo_fs), 0},
        {SOF_TKN_INTEL_DMIC_DUTY_MIN,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_params, duty_min), 0},
        {SOF_TKN_INTEL_DMIC_DUTY_MAX,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_params, duty_max), 0},
        {SOF_TKN_INTEL_DMIC_NUM_PDM_ACTIVE,
                SND_SOC_TPLG_TUPLE_TYPE_WORD, get_token_u32,
                offsetof(struct sof_ipc_dai_dmic_params,
                         num_pdm_active), 0},
        {SOF_TKN_INTEL_DMIC_FIFO_WORD_LENGTH,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_params, fifo_bits), 0},
};

/*
 * DMIC PDM Tokens
 * SOF_TKN_INTEL_DMIC_PDM_CTRL_ID should be the first token
 * as it increments the index while parsing the array of pdm tokens
 * and determines the correct offset
 */
static const struct sof_topology_token dmic_pdm_tokens[] = {
        {SOF_TKN_INTEL_DMIC_PDM_CTRL_ID,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, id),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_MIC_A_Enable,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, enable_mic_a),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_MIC_B_Enable,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, enable_mic_b),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_POLARITY_A,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, polarity_mic_a),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_POLARITY_B,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, polarity_mic_b),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_CLK_EDGE,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, clk_edge),
                0},
        {SOF_TKN_INTEL_DMIC_PDM_SKEW,
                SND_SOC_TPLG_TUPLE_TYPE_SHORT, get_token_u16,
                offsetof(struct sof_ipc_dai_dmic_pdm_ctrl, skew),
                0},
};

/* HDA */
static const struct sof_topology_token hda_tokens[] = {
};

static void sof_parse_uuid_tokens(struct snd_soc_component *scomp,
                                  void *object,
                                  const struct sof_topology_token *tokens,
                                  int count,
                                  struct snd_soc_tplg_vendor_array *array)
{
        struct snd_soc_tplg_vendor_uuid_elem *elem;
        int i, j;

        /* parse element by element */
        for (i = 0; i < le32_to_cpu(array->num_elems); i++) {
                elem = &array->uuid[i];

                /* search for token */
                for (j = 0; j < count; j++) {
                        /* match token type */
                        if (tokens[j].type != SND_SOC_TPLG_TUPLE_TYPE_UUID)
                                continue;

                        /* match token id */
                        if (tokens[j].token != le32_to_cpu(elem->token))
                                continue;

                        /* matched - now load token */
                        tokens[j].get_token(elem, object, tokens[j].offset,
                                            tokens[j].size);
                }
        }
}

static void sof_parse_string_tokens(struct snd_soc_component *scomp,
                                    void *object,
                                    const struct sof_topology_token *tokens,
                                    int count,
                                    struct snd_soc_tplg_vendor_array *array)
{
        struct snd_soc_tplg_vendor_string_elem *elem;
        int i, j;

        /* parse element by element */
        for (i = 0; i < le32_to_cpu(array->num_elems); i++) {
                elem = &array->string[i];

                /* search for token */
                for (j = 0; j < count; j++) {
                        /* match token type */
                        if (tokens[j].type != SND_SOC_TPLG_TUPLE_TYPE_STRING)
                                continue;

                        /* match token id */
                        if (tokens[j].token != le32_to_cpu(elem->token))
                                continue;

                        /* matched - now load token */
                        tokens[j].get_token(elem, object, tokens[j].offset,
                                            tokens[j].size);
                }
        }
}

static void sof_parse_word_tokens(struct snd_soc_component *scomp,
                                  void *object,
                                  const struct sof_topology_token *tokens,
                                  int count,
                                  struct snd_soc_tplg_vendor_array *array)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_vendor_value_elem *elem;
        size_t size = sizeof(struct sof_ipc_dai_dmic_pdm_ctrl);
        int i, j;
        u32 offset;
        u32 *index = NULL;

        /* parse element by element */
        for (i = 0; i < le32_to_cpu(array->num_elems); i++) {
                elem = &array->value[i];

                /* search for token */
                for (j = 0; j < count; j++) {
                        /* match token type */
                        if (!(tokens[j].type == SND_SOC_TPLG_TUPLE_TYPE_WORD ||
                              tokens[j].type == SND_SOC_TPLG_TUPLE_TYPE_SHORT))
                                continue;

                        /* match token id */
                        if (tokens[j].token != le32_to_cpu(elem->token))
                                continue;

                        /* pdm config array index */
                        if (sdev->private)
                                index = sdev->private;

                        /* matched - determine offset */
                        switch (tokens[j].token) {
                        case SOF_TKN_INTEL_DMIC_PDM_CTRL_ID:

                                /* inc number of pdm array index */
                                if (index)
                                        (*index)++;
                                /* fallthrough */
                        case SOF_TKN_INTEL_DMIC_PDM_MIC_A_Enable:
                        case SOF_TKN_INTEL_DMIC_PDM_MIC_B_Enable:
                        case SOF_TKN_INTEL_DMIC_PDM_POLARITY_A:
                        case SOF_TKN_INTEL_DMIC_PDM_POLARITY_B:
                        case SOF_TKN_INTEL_DMIC_PDM_CLK_EDGE:
                        case SOF_TKN_INTEL_DMIC_PDM_SKEW:

                                /* check if array index is valid */
                                if (!index || *index == 0) {
                                        dev_err(sdev->dev,
                                                "error: invalid array offset\n");
                                        continue;
                                } else {
                                        /* offset within the pdm config array */
                                        offset = size * (*index - 1);
                                }
                                break;
                        default:
                                offset = 0;
                                break;
                        }

                        /* load token */
                        tokens[j].get_token(elem, object,
                                            offset + tokens[j].offset,
                                            tokens[j].size);
                }
        }
}

static int sof_parse_tokens(struct snd_soc_component *scomp,
                            void *object,
                            const struct sof_topology_token *tokens,
                            int count,
                            struct snd_soc_tplg_vendor_array *array,
                            int priv_size)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        int asize;

        while (priv_size > 0) {
                asize = le32_to_cpu(array->size);

                /* validate asize */
                if (asize < 0) { /* FIXME: A zero-size array makes no sense */
                        dev_err(sdev->dev, "error: invalid array size 0x%x\n",
                                asize);
                        return -EINVAL;
                }

                /* make sure there is enough data before parsing */
                priv_size -= asize;
                if (priv_size < 0) {
                        dev_err(sdev->dev, "error: invalid array size 0x%x\n",
                                asize);
                        return -EINVAL;
                }

                /* call correct parser depending on type */
                switch (le32_to_cpu(array->type)) {
                case SND_SOC_TPLG_TUPLE_TYPE_UUID:
                        sof_parse_uuid_tokens(scomp, object, tokens, count,
                                              array);
                        break;
                case SND_SOC_TPLG_TUPLE_TYPE_STRING:
                        sof_parse_string_tokens(scomp, object, tokens, count,
                                                array);
                        break;
                case SND_SOC_TPLG_TUPLE_TYPE_BOOL:
                case SND_SOC_TPLG_TUPLE_TYPE_BYTE:
                case SND_SOC_TPLG_TUPLE_TYPE_WORD:
                case SND_SOC_TPLG_TUPLE_TYPE_SHORT:
                        sof_parse_word_tokens(scomp, object, tokens, count,
                                              array);
                        break;
                default:
                        dev_err(sdev->dev, "error: unknown token type %d\n",
                                array->type);

                        return -EINVAL;
                }

                /* next array */
                array = (struct snd_soc_tplg_vendor_array *)((u8 *)array
                        + asize);
        }
        return 0;
}

static void sof_dbg_comp_config(struct snd_soc_component *scomp,
                                struct sof_ipc_comp_config *config)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);

        dev_dbg(sdev->dev, " config: periods snk %d src %d fmt %d\n",
                config->periods_sink, config->periods_source,
                config->frame_fmt);
}

/* external kcontrol init - used for any driver specific init */
static int sof_control_load(struct snd_soc_component *scomp, int index,
                            struct snd_kcontrol_new *kc,
                            struct snd_soc_tplg_ctl_hdr *hdr)
{
        struct soc_mixer_control *sm;
        struct soc_bytes_ext *sbe;
        struct soc_enum *se;
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_dobj *dobj;
        struct snd_sof_control *scontrol;
        int ret = -EINVAL;

        dev_dbg(sdev->dev, "tplg: load control type %d name : %s\n",
                hdr->type, hdr->name);

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

        scontrol->sdev = sdev;

        switch (le32_to_cpu(hdr->ops.info)) {
        case SND_SOC_TPLG_CTL_VOLSW:
        case SND_SOC_TPLG_CTL_VOLSW_SX:
        case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
                sm = (struct soc_mixer_control *)kc->private_value;
                dobj = &sm->dobj;
                ret = sof_control_load_volume(scomp, scontrol, kc, hdr);
                break;
        case SND_SOC_TPLG_CTL_BYTES:
                sbe = (struct soc_bytes_ext *)kc->private_value;
                dobj = &sbe->dobj;
                ret = sof_control_load_bytes(scomp, scontrol, kc, hdr);
                break;
        case SND_SOC_TPLG_CTL_ENUM:
        case SND_SOC_TPLG_CTL_ENUM_VALUE:
                se = (struct soc_enum *)kc->private_value;
                dobj = &se->dobj;
                ret = sof_control_load_enum(scomp, scontrol, kc, hdr);
                break;
        case SND_SOC_TPLG_CTL_RANGE:
        case SND_SOC_TPLG_CTL_STROBE:
        case SND_SOC_TPLG_DAPM_CTL_VOLSW:
        case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
        case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
        case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
        case SND_SOC_TPLG_DAPM_CTL_PIN:
        default:
                dev_warn(sdev->dev, "control type not supported %d:%d:%d\n",
                         hdr->ops.get, hdr->ops.put, hdr->ops.info);
                kfree(scontrol);
                return 0;
        }

        dobj->private = scontrol;
        list_add(&scontrol->list, &sdev->kcontrol_list);
        return ret;
}

static int sof_control_unload(struct snd_soc_component *scomp,
                              struct snd_soc_dobj *dobj)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct sof_ipc_free fcomp;
        struct snd_sof_control *scontrol = dobj->private;

        dev_dbg(sdev->dev, "tplg: unload control name : %s\n", scomp->name);

        fcomp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_FREE;
        fcomp.hdr.size = sizeof(fcomp);
        fcomp.id = scontrol->comp_id;

        kfree(scontrol->control_data);
        list_del(&scontrol->list);
        kfree(scontrol);
        /* send IPC to the DSP */
        return sof_ipc_tx_message(sdev->ipc,
                                  fcomp.hdr.cmd, &fcomp, sizeof(fcomp),
                                  NULL, 0);
}

/*
 * DAI Topology
 */

static int sof_connect_dai_widget(struct snd_soc_component *scomp,
                                  struct snd_soc_dapm_widget *w,
                                  struct snd_soc_tplg_dapm_widget *tw,
                                  struct snd_sof_dai *dai)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_card *card = scomp->card;
        struct snd_soc_pcm_runtime *rtd;

        list_for_each_entry(rtd, &card->rtd_list, list) {
                dev_vdbg(sdev->dev, "tplg: check widget: %s stream: %s dai stream: %s\n",
                         w->name,  w->sname, rtd->dai_link->stream_name);

                if (!w->sname || !rtd->dai_link->stream_name)
                        continue;

                /* does stream match DAI link ? */
                if (strcmp(w->sname, rtd->dai_link->stream_name))
                        continue;

                switch (w->id) {
                case snd_soc_dapm_dai_out:
                        rtd->cpu_dai->capture_widget = w;
                        dai->name = rtd->dai_link->name;
                        dev_dbg(sdev->dev, "tplg: connected widget %s -> DAI link %s\n",
                                w->name, rtd->dai_link->name);
                        break;
                case snd_soc_dapm_dai_in:
                        rtd->cpu_dai->playback_widget = w;
                        dai->name = rtd->dai_link->name;
                        dev_dbg(sdev->dev, "tplg: connected widget %s -> DAI link %s\n",
                                w->name, rtd->dai_link->name);
                        break;
                default:
                        break;
                }
        }

        /* check we have a connection */
        if (!dai->name) {
                dev_err(sdev->dev, "error: can't connect DAI %s stream %s\n",
                        w->name, w->sname);
                return -EINVAL;
        }

        return 0;
}

static int sof_widget_load_dai(struct snd_soc_component *scomp, int index,
                               struct snd_sof_widget *swidget,
                               struct snd_soc_tplg_dapm_widget *tw,
                               struct sof_ipc_comp_reply *r,
                               struct snd_sof_dai *dai)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_dai comp_dai;
        int ret;

        /* configure dai IPC message */
        memset(&comp_dai, 0, sizeof(comp_dai));
        comp_dai.comp.hdr.size = sizeof(comp_dai);
        comp_dai.comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        comp_dai.comp.id = swidget->comp_id;
        comp_dai.comp.type = SOF_COMP_DAI;
        comp_dai.comp.pipeline_id = index;
        comp_dai.config.hdr.size = sizeof(comp_dai.config);

        ret = sof_parse_tokens(scomp, &comp_dai, dai_tokens,
                               ARRAY_SIZE(dai_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse dai tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        ret = sof_parse_tokens(scomp, &comp_dai.config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse dai.cfg tokens failed %d\n",
                        private->size);
                return ret;
        }

        dev_dbg(sdev->dev, "dai %s: type %d index %d\n",
                swidget->widget->name, comp_dai.type, comp_dai.dai_index);
        sof_dbg_comp_config(scomp, &comp_dai.config);

        ret = sof_ipc_tx_message(sdev->ipc, comp_dai.comp.hdr.cmd,
                                 &comp_dai, sizeof(comp_dai), r, sizeof(*r));

        if (ret == 0 && dai) {
                dai->sdev = sdev;
                memcpy(&dai->comp_dai, &comp_dai, sizeof(comp_dai));
        }

        return ret;
}

/*
 * Buffer topology
 */

static int sof_widget_load_buffer(struct snd_soc_component *scomp, int index,
                                  struct snd_sof_widget *swidget,
                                  struct snd_soc_tplg_dapm_widget *tw,
                                  struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_buffer *buffer;
        int ret;

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

        /* configure dai IPC message */
        buffer->comp.hdr.size = sizeof(*buffer);
        buffer->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_BUFFER_NEW;
        buffer->comp.id = swidget->comp_id;
        buffer->comp.type = SOF_COMP_BUFFER;
        buffer->comp.pipeline_id = index;

        ret = sof_parse_tokens(scomp, buffer, buffer_tokens,
                               ARRAY_SIZE(buffer_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse buffer tokens failed %d\n",
                        private->size);
                kfree(buffer);
                return ret;
        }

        dev_dbg(sdev->dev, "buffer %s: size %d caps 0x%x\n",
                swidget->widget->name, buffer->size, buffer->caps);

        swidget->private = buffer;

        ret = sof_ipc_tx_message(sdev->ipc, buffer->comp.hdr.cmd, buffer,
                                 sizeof(*buffer), r, sizeof(*r));
        if (ret < 0) {
                dev_err(sdev->dev, "error: buffer %s load failed\n",
                        swidget->widget->name);
                kfree(buffer);
        }

        return ret;
}

/* bind PCM ID to host component ID */
static int spcm_bind(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm,
                     int dir)
{
        struct snd_sof_widget *host_widget;

        host_widget = snd_sof_find_swidget_sname(sdev,
                                                 spcm->pcm.caps[dir].name,
                                                 dir);
        if (!host_widget) {
                dev_err(sdev->dev, "can't find host comp to bind pcm\n");
                return -EINVAL;
        }

        spcm->stream[dir].comp_id = host_widget->comp_id;

        return 0;
}

/*
 * PCM Topology
 */

static int sof_widget_load_pcm(struct snd_soc_component *scomp, int index,
                               struct snd_sof_widget *swidget,
                               enum sof_ipc_stream_direction dir,
                               struct snd_soc_tplg_dapm_widget *tw,
                               struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_host *host;
        int ret;

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

        /* configure host comp IPC message */
        host->comp.hdr.size = sizeof(*host);
        host->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        host->comp.id = swidget->comp_id;
        host->comp.type = SOF_COMP_HOST;
        host->comp.pipeline_id = index;
        host->direction = dir;
        host->config.hdr.size = sizeof(host->config);

        ret = sof_parse_tokens(scomp, host, pcm_tokens,
                               ARRAY_SIZE(pcm_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse host tokens failed %d\n",
                        private->size);
                goto err;
        }

        ret = sof_parse_tokens(scomp, &host->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse host.cfg tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        dev_dbg(sdev->dev, "loaded host %s\n", swidget->widget->name);
        sof_dbg_comp_config(scomp, &host->config);

        swidget->private = host;

        ret = sof_ipc_tx_message(sdev->ipc, host->comp.hdr.cmd, host,
                                 sizeof(*host), r, sizeof(*r));
        if (ret >= 0)
                return ret;
err:
        kfree(host);
        return ret;
}

/*
 * Pipeline Topology
 */
int sof_load_pipeline_ipc(struct snd_sof_dev *sdev,
                          struct sof_ipc_pipe_new *pipeline,
                          struct sof_ipc_comp_reply *r)
{
        struct sof_ipc_pm_core_config pm_core_config;
        int ret;

        ret = sof_ipc_tx_message(sdev->ipc, pipeline->hdr.cmd, pipeline,
                                 sizeof(*pipeline), r, sizeof(*r));
        if (ret < 0) {
                dev_err(sdev->dev, "error: load pipeline ipc failure\n");
                return ret;
        }

        /* power up the core that this pipeline is scheduled on */
        ret = snd_sof_dsp_core_power_up(sdev, 1 << pipeline->core);
        if (ret < 0) {
                dev_err(sdev->dev, "error: powering up pipeline schedule core %d\n",
                        pipeline->core);
                return ret;
        }

        /* update enabled cores mask */
        sdev->enabled_cores_mask |= 1 << pipeline->core;

        /*
         * Now notify DSP that the core that this pipeline is scheduled on
         * has been powered up
         */
        memset(&pm_core_config, 0, sizeof(pm_core_config));
        pm_core_config.enable_mask = sdev->enabled_cores_mask;

        /* configure CORE_ENABLE ipc message */
        pm_core_config.hdr.size = sizeof(pm_core_config);
        pm_core_config.hdr.cmd = SOF_IPC_GLB_PM_MSG | SOF_IPC_PM_CORE_ENABLE;

        /* send ipc */
        ret = sof_ipc_tx_message(sdev->ipc, pm_core_config.hdr.cmd,
                                 &pm_core_config, sizeof(pm_core_config),
                                 &pm_core_config, sizeof(pm_core_config));
        if (ret < 0)
                dev_err(sdev->dev, "error: core enable ipc failure\n");

        return ret;
}

static int sof_widget_load_pipeline(struct snd_soc_component *scomp,
                                    int index, struct snd_sof_widget *swidget,
                                    struct snd_soc_tplg_dapm_widget *tw,
                                    struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_pipe_new *pipeline;
        struct snd_sof_widget *comp_swidget;
        int ret;

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

        /* configure dai IPC message */
        pipeline->hdr.size = sizeof(*pipeline);
        pipeline->hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_PIPE_NEW;
        pipeline->pipeline_id = index;
        pipeline->comp_id = swidget->comp_id;

        /* component at start of pipeline is our stream id */
        comp_swidget = snd_sof_find_swidget(sdev, tw->sname);
        if (!comp_swidget) {
                dev_err(sdev->dev, "error: widget %s refers to non existent widget %s\n",
                        tw->name, tw->sname);
                ret = -EINVAL;
                goto err;
        }

        pipeline->sched_id = comp_swidget->comp_id;

        dev_dbg(sdev->dev, "tplg: pipeline id %d comp %d scheduling comp id %d\n",
                pipeline->pipeline_id, pipeline->comp_id, pipeline->sched_id);

        ret = sof_parse_tokens(scomp, pipeline, sched_tokens,
                               ARRAY_SIZE(sched_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse pipeline tokens failed %d\n",
                        private->size);
                goto err;
        }

        dev_dbg(sdev->dev, "pipeline %s: period %d pri %d mips %d core %d frames %d\n",
                swidget->widget->name, pipeline->period, pipeline->priority,
                pipeline->period_mips, pipeline->core, pipeline->frames_per_sched);

        swidget->private = pipeline;

        /* send ipc's to create pipeline comp and power up schedule core */
        ret = sof_load_pipeline_ipc(sdev, pipeline, r);
        if (ret >= 0)
                return ret;
err:
        kfree(pipeline);
        return ret;
}

/*
 * Mixer topology
 */

static int sof_widget_load_mixer(struct snd_soc_component *scomp, int index,
                                 struct snd_sof_widget *swidget,
                                 struct snd_soc_tplg_dapm_widget *tw,
                                 struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_mixer *mixer;
        int ret;

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

        /* configure mixer IPC message */
        mixer->comp.hdr.size = sizeof(*mixer);
        mixer->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        mixer->comp.id = swidget->comp_id;
        mixer->comp.type = SOF_COMP_MIXER;
        mixer->comp.pipeline_id = index;
        mixer->config.hdr.size = sizeof(mixer->config);

        ret = sof_parse_tokens(scomp, &mixer->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse mixer.cfg tokens failed %d\n",
                        private->size);
                kfree(mixer);
                return ret;
        }

        sof_dbg_comp_config(scomp, &mixer->config);

        swidget->private = mixer;

        ret = sof_ipc_tx_message(sdev->ipc, mixer->comp.hdr.cmd, mixer,
                                 sizeof(*mixer), r, sizeof(*r));
        if (ret < 0)
                kfree(mixer);

        return ret;
}

/*
 * Mux topology
 */
static int sof_widget_load_mux(struct snd_soc_component *scomp, int index,
                               struct snd_sof_widget *swidget,
                               struct snd_soc_tplg_dapm_widget *tw,
                               struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_mux *mux;
        int ret;

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

        /* configure mux IPC message */
        mux->comp.hdr.size = sizeof(*mux);
        mux->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        mux->comp.id = swidget->comp_id;
        mux->comp.type = SOF_COMP_MUX;
        mux->comp.pipeline_id = index;
        mux->config.hdr.size = sizeof(mux->config);

        ret = sof_parse_tokens(scomp, &mux->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse mux.cfg tokens failed %d\n",
                        private->size);
                kfree(mux);
                return ret;
        }

        sof_dbg_comp_config(scomp, &mux->config);

        swidget->private = mux;

        ret = sof_ipc_tx_message(sdev->ipc, mux->comp.hdr.cmd, mux,
                                 sizeof(*mux), r, sizeof(*r));
        if (ret < 0)
                kfree(mux);

        return ret;
}

/*
 * PGA Topology
 */

static int sof_widget_load_pga(struct snd_soc_component *scomp, int index,
                               struct snd_sof_widget *swidget,
                               struct snd_soc_tplg_dapm_widget *tw,
                               struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_volume *volume;
        int ret;

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

        if (le32_to_cpu(tw->num_kcontrols) != 1) {
                dev_err(sdev->dev, "error: invalid kcontrol count %d for volume\n",
                        tw->num_kcontrols);
                ret = -EINVAL;
                goto err;
        }

        /* configure volume IPC message */
        volume->comp.hdr.size = sizeof(*volume);
        volume->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        volume->comp.id = swidget->comp_id;
        volume->comp.type = SOF_COMP_VOLUME;
        volume->comp.pipeline_id = index;
        volume->config.hdr.size = sizeof(volume->config);

        ret = sof_parse_tokens(scomp, volume, volume_tokens,
                               ARRAY_SIZE(volume_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse volume tokens failed %d\n",
                        private->size);
                goto err;
        }
        ret = sof_parse_tokens(scomp, &volume->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse volume.cfg tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        sof_dbg_comp_config(scomp, &volume->config);

        swidget->private = volume;

        ret = sof_ipc_tx_message(sdev->ipc, volume->comp.hdr.cmd, volume,
                                 sizeof(*volume), r, sizeof(*r));
        if (ret >= 0)
                return ret;
err:
        kfree(volume);
        return ret;
}

/*
 * SRC Topology
 */

static int sof_widget_load_src(struct snd_soc_component *scomp, int index,
                               struct snd_sof_widget *swidget,
                               struct snd_soc_tplg_dapm_widget *tw,
                               struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_src *src;
        int ret;

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

        /* configure src IPC message */
        src->comp.hdr.size = sizeof(*src);
        src->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        src->comp.id = swidget->comp_id;
        src->comp.type = SOF_COMP_SRC;
        src->comp.pipeline_id = index;
        src->config.hdr.size = sizeof(src->config);

        ret = sof_parse_tokens(scomp, src, src_tokens,
                               ARRAY_SIZE(src_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse src tokens failed %d\n",
                        private->size);
                goto err;
        }

        ret = sof_parse_tokens(scomp, &src->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse src.cfg tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        dev_dbg(sdev->dev, "src %s: source rate %d sink rate %d\n",
                swidget->widget->name, src->source_rate, src->sink_rate);
        sof_dbg_comp_config(scomp, &src->config);

        swidget->private = src;

        ret = sof_ipc_tx_message(sdev->ipc, src->comp.hdr.cmd, src,
                                 sizeof(*src), r, sizeof(*r));
        if (ret >= 0)
                return ret;
err:
        kfree(src);
        return ret;
}

/*
 * Signal Generator Topology
 */

static int sof_widget_load_siggen(struct snd_soc_component *scomp, int index,
                                  struct snd_sof_widget *swidget,
                                  struct snd_soc_tplg_dapm_widget *tw,
                                  struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_tone *tone;
        int ret;

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

        /* configure siggen IPC message */
        tone->comp.hdr.size = sizeof(*tone);
        tone->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        tone->comp.id = swidget->comp_id;
        tone->comp.type = SOF_COMP_TONE;
        tone->comp.pipeline_id = index;
        tone->config.hdr.size = sizeof(tone->config);

        ret = sof_parse_tokens(scomp, tone, tone_tokens,
                               ARRAY_SIZE(tone_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse tone tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        ret = sof_parse_tokens(scomp, &tone->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse tone.cfg tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        dev_dbg(sdev->dev, "tone %s: frequency %d amplitude %d\n",
                swidget->widget->name, tone->frequency, tone->amplitude);
        sof_dbg_comp_config(scomp, &tone->config);

        swidget->private = tone;

        ret = sof_ipc_tx_message(sdev->ipc, tone->comp.hdr.cmd, tone,
                                 sizeof(*tone), r, sizeof(*r));
        if (ret >= 0)
                return ret;
err:
        kfree(tone);
        return ret;
}

static int sof_process_load(struct snd_soc_component *scomp, int index,
                            struct snd_sof_widget *swidget,
                            struct snd_soc_tplg_dapm_widget *tw,
                            struct sof_ipc_comp_reply *r,
                            int type)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct snd_soc_dapm_widget *widget = swidget->widget;
        const struct snd_kcontrol_new *kc;
        struct soc_bytes_ext *sbe;
        struct soc_mixer_control *sm;
        struct soc_enum *se;
        struct snd_sof_control *scontrol = NULL;
        struct sof_abi_hdr *pdata = NULL;
        struct sof_ipc_comp_process *process;
        size_t ipc_size, ipc_data_size = 0;
        int ret, i, offset = 0;

        if (type == SOF_COMP_NONE) {
                dev_err(sdev->dev, "error: invalid process comp type %d\n",
                        type);
                return -EINVAL;
        }

        /*
         * get possible component controls - get size of all pdata,
         * then memcpy with headers
         */
        for (i = 0; i < widget->num_kcontrols; i++) {

                kc = &widget->kcontrol_news[i];

                switch (widget->dobj.widget.kcontrol_type) {
                case SND_SOC_TPLG_TYPE_MIXER:
                        sm = (struct soc_mixer_control *)kc->private_value;
                        scontrol = sm->dobj.private;
                        break;
                case SND_SOC_TPLG_TYPE_BYTES:
                        sbe = (struct soc_bytes_ext *)kc->private_value;
                        scontrol = sbe->dobj.private;
                        break;
                case SND_SOC_TPLG_TYPE_ENUM:
                        se = (struct soc_enum *)kc->private_value;
                        scontrol = se->dobj.private;
                        break;
                default:
                        dev_err(sdev->dev, "error: unknown kcontrol type %d in widget %s\n",
                                widget->dobj.widget.kcontrol_type,
                                widget->name);
                        return -EINVAL;
                }

                if (!scontrol) {
                        dev_err(sdev->dev, "error: no scontrol for widget %s\n",
                                widget->name);
                        return -EINVAL;
                }

                /* don't include if no private data */
                pdata = scontrol->control_data->data;
                if (!pdata)
                        continue;

                /* make sure data is valid - data can be updated at runtime */
                if (pdata->magic != SOF_ABI_MAGIC)
                        continue;

                ipc_data_size += pdata->size;
        }

        ipc_size = sizeof(struct sof_ipc_comp_process) +
                le32_to_cpu(private->size) +
                ipc_data_size;

        process = kzalloc(ipc_size, GFP_KERNEL);
        if (!process)
                return -ENOMEM;

        /* configure iir IPC message */
        process->comp.hdr.size = ipc_size;
        process->comp.hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_NEW;
        process->comp.id = swidget->comp_id;
        process->comp.type = type;
        process->comp.pipeline_id = index;
        process->config.hdr.size = sizeof(process->config);

        ret = sof_parse_tokens(scomp, &process->config, comp_tokens,
                               ARRAY_SIZE(comp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse process.cfg tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        sof_dbg_comp_config(scomp, &process->config);

        /*
         * found private data in control, so copy it.
         * get possible component controls - get size of all pdata,
         * then memcpy with headers
         */
        for (i = 0; i < widget->num_kcontrols; i++) {
                kc = &widget->kcontrol_news[i];

                switch (widget->dobj.widget.kcontrol_type) {
                case SND_SOC_TPLG_TYPE_MIXER:
                        sm = (struct soc_mixer_control *)kc->private_value;
                        scontrol = sm->dobj.private;
                        break;
                case SND_SOC_TPLG_TYPE_BYTES:
                        sbe = (struct soc_bytes_ext *)kc->private_value;
                        scontrol = sbe->dobj.private;
                        break;
                case SND_SOC_TPLG_TYPE_ENUM:
                        se = (struct soc_enum *)kc->private_value;
                        scontrol = se->dobj.private;
                        break;
                default:
                        dev_err(sdev->dev, "error: unknown kcontrol type %d in widget %s\n",
                                widget->dobj.widget.kcontrol_type,
                                widget->name);
                        return -EINVAL;
                }

                /* don't include if no private data */
                pdata = scontrol->control_data->data;
                if (!pdata)
                        continue;

                /* make sure data is valid - data can be updated at runtime */
                if (pdata->magic != SOF_ABI_MAGIC)
                        continue;

                memcpy(&process->data + offset, pdata->data, pdata->size);
                offset += pdata->size;
        }

        process->size = ipc_data_size;
        swidget->private = process;

        ret = sof_ipc_tx_message(sdev->ipc, process->comp.hdr.cmd, process,
                                 ipc_size, r, sizeof(*r));
        if (ret >= 0)
                return ret;
err:
        kfree(process);
        return ret;
}

/*
 * Processing Component Topology - can be "effect", "codec", or general
 * "processing".
 */

static int sof_widget_load_process(struct snd_soc_component *scomp, int index,
                                   struct snd_sof_widget *swidget,
                                   struct snd_soc_tplg_dapm_widget *tw,
                                   struct sof_ipc_comp_reply *r)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &tw->priv;
        struct sof_ipc_comp_process config;
        int ret;

        /* check we have some tokens - we need at least process type */
        if (le32_to_cpu(private->size) == 0) {
                dev_err(sdev->dev, "error: process tokens not found\n");
                return -EINVAL;
        }

        memset(&config, 0, sizeof(config));

        /* get the process token */
        ret = sof_parse_tokens(scomp, &config, process_tokens,
                               ARRAY_SIZE(process_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse process tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        /* now load process specific data and send IPC */
        ret = sof_process_load(scomp, index, swidget, tw, r,
                               find_process_comp_type(config.type));
        if (ret < 0) {
                dev_err(sdev->dev, "error: process loading failed\n");
                return ret;
        }

        return 0;
}

static int sof_widget_bind_event(struct snd_sof_dev *sdev,
                                 struct snd_sof_widget *swidget,
                                 u16 event_type)
{
        struct sof_ipc_comp *ipc_comp;

        /* validate widget event type */
        switch (event_type) {
        case SOF_KEYWORD_DETECT_DAPM_EVENT:
                /* only KEYWORD_DETECT comps should handle this */
                if (swidget->id != snd_soc_dapm_effect)
                        break;

                ipc_comp = swidget->private;
                if (ipc_comp && ipc_comp->type != SOF_COMP_KEYWORD_DETECT)
                        break;

                /* bind event to keyword detect comp */
                return snd_soc_tplg_widget_bind_event(swidget->widget,
                                                      sof_kwd_events,
                                                      ARRAY_SIZE(sof_kwd_events),
                                                      event_type);
        default:
                break;
        }

        dev_err(sdev->dev,
                "error: invalid event type %d for widget %s\n",
                event_type, swidget->widget->name);
        return -EINVAL;
}

/* external widget init - used for any driver specific init */
static int sof_widget_ready(struct snd_soc_component *scomp, int index,
                            struct snd_soc_dapm_widget *w,
                            struct snd_soc_tplg_dapm_widget *tw)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_sof_widget *swidget;
        struct snd_sof_dai *dai;
        struct sof_ipc_comp_reply reply;
        struct snd_sof_control *scontrol;
        int ret = 0;

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

        swidget->sdev = sdev;
        swidget->widget = w;
        swidget->comp_id = sdev->next_comp_id++;
        swidget->complete = 0;
        swidget->id = w->id;
        swidget->pipeline_id = index;
        swidget->private = NULL;
        memset(&reply, 0, sizeof(reply));

        dev_dbg(sdev->dev, "tplg: ready widget id %d pipe %d type %d name : %s stream %s\n",
                swidget->comp_id, index, swidget->id, tw->name,
                strnlen(tw->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) > 0
                        ? tw->sname : "none");

        /* handle any special case widgets */
        switch (w->id) {
        case snd_soc_dapm_dai_in:
        case snd_soc_dapm_dai_out:
                dai = kzalloc(sizeof(*dai), GFP_KERNEL);
                if (!dai) {
                        kfree(swidget);
                        return -ENOMEM;
                }

                ret = sof_widget_load_dai(scomp, index, swidget, tw, &reply,
                                          dai);
                if (ret == 0) {
                        sof_connect_dai_widget(scomp, w, tw, dai);
                        list_add(&dai->list, &sdev->dai_list);
                        swidget->private = dai;
                } else {
                        kfree(dai);
                }
                break;
        case snd_soc_dapm_mixer:
                ret = sof_widget_load_mixer(scomp, index, swidget, tw, &reply);

                break;
        case snd_soc_dapm_pga:
                ret = sof_widget_load_pga(scomp, index, swidget, tw, &reply);
                /* Find scontrol for this pga and set readback offset*/
                list_for_each_entry(scontrol, &sdev->kcontrol_list, list) {
                        if (scontrol->comp_id == swidget->comp_id) {
                                scontrol->readback_offset = reply.offset;
                                break;
                        }
                }
                break;
        case snd_soc_dapm_buffer:
                ret = sof_widget_load_buffer(scomp, index, swidget, tw, &reply);
                break;
        case snd_soc_dapm_scheduler:
                ret = sof_widget_load_pipeline(scomp, index, swidget, tw,
                                               &reply);
                break;
        case snd_soc_dapm_aif_out:
                ret = sof_widget_load_pcm(scomp, index, swidget,
                                          SOF_IPC_STREAM_CAPTURE, tw, &reply);
                break;
        case snd_soc_dapm_aif_in:
                ret = sof_widget_load_pcm(scomp, index, swidget,
                                          SOF_IPC_STREAM_PLAYBACK, tw, &reply);
                break;
        case snd_soc_dapm_src:
                ret = sof_widget_load_src(scomp, index, swidget, tw, &reply);
                break;
        case snd_soc_dapm_siggen:
                ret = sof_widget_load_siggen(scomp, index, swidget, tw, &reply);
                break;
        case snd_soc_dapm_effect:
                ret = sof_widget_load_process(scomp, index, swidget, tw,
                                              &reply);
                break;
        case snd_soc_dapm_mux:
        case snd_soc_dapm_demux:
                ret = sof_widget_load_mux(scomp, index, swidget, tw, &reply);
                break;
        case snd_soc_dapm_switch:
        case snd_soc_dapm_dai_link:
        case snd_soc_dapm_kcontrol:
        default:
                dev_warn(sdev->dev, "warning: widget type %d name %s not handled\n",
                         swidget->id, tw->name);
                break;
        }

        /* check IPC reply */
        if (ret < 0 || reply.rhdr.error < 0) {
                dev_err(sdev->dev,
                        "error: DSP failed to add widget id %d type %d name : %s stream %s reply %d\n",
                        tw->shift, swidget->id, tw->name,
                        strnlen(tw->sname, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) > 0
                                ? tw->sname : "none", reply.rhdr.error);
                kfree(swidget);
                return ret;
        }

        /* bind widget to external event */
        if (tw->event_type) {
                ret = sof_widget_bind_event(sdev, swidget,
                                            le16_to_cpu(tw->event_type));
                if (ret) {
                        dev_err(sdev->dev, "error: widget event binding failed\n");
                        kfree(swidget->private);
                        kfree(swidget);
                        return ret;
                }
        }

        w->dobj.private = swidget;
        list_add(&swidget->list, &sdev->widget_list);
        return ret;
}

static int sof_route_unload(struct snd_soc_component *scomp,
                            struct snd_soc_dobj *dobj)
{
        struct snd_sof_route *sroute;

        sroute = dobj->private;
        if (!sroute)
                return 0;

        /* free sroute and its private data */
        kfree(sroute->private);
        list_del(&sroute->list);
        kfree(sroute);

        return 0;
}

static int sof_widget_unload(struct snd_soc_component *scomp,
                             struct snd_soc_dobj *dobj)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        const struct snd_kcontrol_new *kc;
        struct snd_soc_dapm_widget *widget;
        struct sof_ipc_pipe_new *pipeline;
        struct snd_sof_control *scontrol;
        struct snd_sof_widget *swidget;
        struct soc_mixer_control *sm;
        struct soc_bytes_ext *sbe;
        struct snd_sof_dai *dai;
        struct soc_enum *se;
        int ret = 0;
        int i;

        swidget = dobj->private;
        if (!swidget)
                return 0;

        widget = swidget->widget;

        switch (swidget->id) {
        case snd_soc_dapm_dai_in:
        case snd_soc_dapm_dai_out:
                dai = swidget->private;

                if (dai) {
                        /* free dai config */
                        kfree(dai->dai_config);
                        list_del(&dai->list);
                }
                break;
        case snd_soc_dapm_scheduler:

                /* power down the pipeline schedule core */
                pipeline = swidget->private;
                ret = snd_sof_dsp_core_power_down(sdev, 1 << pipeline->core);
                if (ret < 0)
                        dev_err(sdev->dev, "error: powering down pipeline schedule core %d\n",
                                pipeline->core);

                /* update enabled cores mask */
                sdev->enabled_cores_mask &= ~(1 << pipeline->core);

                break;
        default:
                break;
        }
        for (i = 0; i < widget->num_kcontrols; i++) {
                kc = &widget->kcontrol_news[i];
                switch (dobj->widget.kcontrol_type) {
                case SND_SOC_TPLG_TYPE_MIXER:
                        sm = (struct soc_mixer_control *)kc->private_value;
                        scontrol = sm->dobj.private;
                        if (sm->max > 1)
                                kfree(scontrol->volume_table);
                        break;
                case SND_SOC_TPLG_TYPE_ENUM:
                        se = (struct soc_enum *)kc->private_value;
                        scontrol = se->dobj.private;
                        break;
                case SND_SOC_TPLG_TYPE_BYTES:
                        sbe = (struct soc_bytes_ext *)kc->private_value;
                        scontrol = sbe->dobj.private;
                        break;
                default:
                        dev_warn(sdev->dev, "unsupported kcontrol_type\n");
                        goto out;
                }
                kfree(scontrol->control_data);
                list_del(&scontrol->list);
                kfree(scontrol);
        }

out:
        /* free private value */
        kfree(swidget->private);

        /* remove and free swidget object */
        list_del(&swidget->list);
        kfree(swidget);

        return ret;
}

/*
 * DAI HW configuration.
 */

/* FE DAI - used for any driver specific init */
static int sof_dai_load(struct snd_soc_component *scomp, int index,
                        struct snd_soc_dai_driver *dai_drv,
                        struct snd_soc_tplg_pcm *pcm, struct snd_soc_dai *dai)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_stream_caps *caps;
        struct snd_sof_pcm *spcm;
        int stream = SNDRV_PCM_STREAM_PLAYBACK;
        int ret = 0;

        /* nothing to do for BEs atm */
        if (!pcm)
                return 0;

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

        spcm->sdev = sdev;
        spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].comp_id = COMP_ID_UNASSIGNED;
        spcm->stream[SNDRV_PCM_STREAM_CAPTURE].comp_id = COMP_ID_UNASSIGNED;

        if (pcm) {
                spcm->pcm = *pcm;
                dev_dbg(sdev->dev, "tplg: load pcm %s\n", pcm->dai_name);
        }
        dai_drv->dobj.private = spcm;
        list_add(&spcm->list, &sdev->pcm_list);

        /* do we need to allocate playback PCM DMA pages */
        if (!spcm->pcm.playback)
                goto capture;

        caps = &spcm->pcm.caps[stream];

        /* allocate playback page table buffer */
        ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, sdev->dev,
                                  PAGE_SIZE, &spcm->stream[stream].page_table);
        if (ret < 0) {
                dev_err(sdev->dev, "error: can't alloc page table for %s %d\n",
                        caps->name, ret);

                return ret;
        }

        /* bind pcm to host comp */
        ret = spcm_bind(sdev, spcm, stream);
        if (ret) {
                dev_err(sdev->dev,
                        "error: can't bind pcm to host\n");
                goto free_playback_tables;
        }

capture:
        stream = SNDRV_PCM_STREAM_CAPTURE;

        /* do we need to allocate capture PCM DMA pages */
        if (!spcm->pcm.capture)
                return ret;

        caps = &spcm->pcm.caps[stream];

        /* allocate capture page table buffer */
        ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, sdev->dev,
                                  PAGE_SIZE, &spcm->stream[stream].page_table);
        if (ret < 0) {
                dev_err(sdev->dev, "error: can't alloc page table for %s %d\n",
                        caps->name, ret);
                goto free_playback_tables;
        }

        /* bind pcm to host comp */
        ret = spcm_bind(sdev, spcm, stream);
        if (ret) {
                dev_err(sdev->dev,
                        "error: can't bind pcm to host\n");
                snd_dma_free_pages(&spcm->stream[stream].page_table);
                goto free_playback_tables;
        }

        return ret;

free_playback_tables:
        if (spcm->pcm.playback)
                snd_dma_free_pages(&spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].page_table);

        return ret;
}

static int sof_dai_unload(struct snd_soc_component *scomp,
                          struct snd_soc_dobj *dobj)
{
        struct snd_sof_pcm *spcm = dobj->private;

        /* free PCM DMA pages */
        if (spcm->pcm.playback)
                snd_dma_free_pages(&spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].page_table);

        if (spcm->pcm.capture)
                snd_dma_free_pages(&spcm->stream[SNDRV_PCM_STREAM_CAPTURE].page_table);

        /* remove from list and free spcm */
        list_del(&spcm->list);
        kfree(spcm);

        return 0;
}

static void sof_dai_set_format(struct snd_soc_tplg_hw_config *hw_config,
                               struct sof_ipc_dai_config *config)
{
        /* clock directions wrt codec */
        if (hw_config->bclk_master == SND_SOC_TPLG_BCLK_CM) {
                /* codec is bclk master */
                if (hw_config->fsync_master == SND_SOC_TPLG_FSYNC_CM)
                        config->format |= SOF_DAI_FMT_CBM_CFM;
                else
                        config->format |= SOF_DAI_FMT_CBM_CFS;
        } else {
                /* codec is bclk slave */
                if (hw_config->fsync_master == SND_SOC_TPLG_FSYNC_CM)
                        config->format |= SOF_DAI_FMT_CBS_CFM;
                else
                        config->format |= SOF_DAI_FMT_CBS_CFS;
        }

        /* inverted clocks ? */
        if (hw_config->invert_bclk) {
                if (hw_config->invert_fsync)
                        config->format |= SOF_DAI_FMT_IB_IF;
                else
                        config->format |= SOF_DAI_FMT_IB_NF;
        } else {
                if (hw_config->invert_fsync)
                        config->format |= SOF_DAI_FMT_NB_IF;
                else
                        config->format |= SOF_DAI_FMT_NB_NF;
        }
}

/* set config for all DAI's with name matching the link name */
static int sof_set_dai_config(struct snd_sof_dev *sdev, u32 size,
                              struct snd_soc_dai_link *link,
                              struct sof_ipc_dai_config *config)
{
        struct snd_sof_dai *dai;
        int found = 0;

        list_for_each_entry(dai, &sdev->dai_list, list) {
                if (!dai->name)
                        continue;

                if (strcmp(link->name, dai->name) == 0) {
                        dai->dai_config = kmemdup(config, size, GFP_KERNEL);
                        if (!dai->dai_config)
                                return -ENOMEM;

                        found = 1;
                }
        }

        /*
         * machine driver may define a dai link with playback and capture
         * dai enabled, but the dai link in topology would support both, one
         * or none of them. Here print a warning message to notify user
         */
        if (!found) {
                dev_warn(sdev->dev, "warning: failed to find dai for dai link %s",
                         link->name);
        }

        return 0;
}

static int sof_link_ssp_load(struct snd_soc_component *scomp, int index,
                             struct snd_soc_dai_link *link,
                             struct snd_soc_tplg_link_config *cfg,
                             struct snd_soc_tplg_hw_config *hw_config,
                             struct sof_ipc_dai_config *config)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &cfg->priv;
        struct sof_ipc_reply reply;
        u32 size = sizeof(*config);
        int ret;

        /* handle master/slave and inverted clocks */
        sof_dai_set_format(hw_config, config);

        /* init IPC */
        memset(&config->ssp, 0, sizeof(struct sof_ipc_dai_ssp_params));
        config->hdr.size = size;

        ret = sof_parse_tokens(scomp, &config->ssp, ssp_tokens,
                               ARRAY_SIZE(ssp_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse ssp tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        config->ssp.mclk_rate = le32_to_cpu(hw_config->mclk_rate);
        config->ssp.bclk_rate = le32_to_cpu(hw_config->bclk_rate);
        config->ssp.fsync_rate = le32_to_cpu(hw_config->fsync_rate);
        config->ssp.tdm_slots = le32_to_cpu(hw_config->tdm_slots);
        config->ssp.tdm_slot_width = le32_to_cpu(hw_config->tdm_slot_width);
        config->ssp.mclk_direction = hw_config->mclk_direction;
        config->ssp.rx_slots = le32_to_cpu(hw_config->rx_slots);
        config->ssp.tx_slots = le32_to_cpu(hw_config->tx_slots);

        dev_dbg(sdev->dev, "tplg: config SSP%d fmt 0x%x mclk %d bclk %d fclk %d width (%d)%d slots %d mclk id %d quirks %d\n",
                config->dai_index, config->format,
                config->ssp.mclk_rate, config->ssp.bclk_rate,
                config->ssp.fsync_rate, config->ssp.sample_valid_bits,
                config->ssp.tdm_slot_width, config->ssp.tdm_slots,
                config->ssp.mclk_id, config->ssp.quirks);

        /* validate SSP fsync rate and channel count */
        if (config->ssp.fsync_rate < 8000 || config->ssp.fsync_rate > 192000) {
                dev_err(sdev->dev, "error: invalid fsync rate for SSP%d\n",
                        config->dai_index);
                return -EINVAL;
        }

        if (config->ssp.tdm_slots < 1 || config->ssp.tdm_slots > 8) {
                dev_err(sdev->dev, "error: invalid channel count for SSP%d\n",
                        config->dai_index);
                return -EINVAL;
        }

        /* send message to DSP */
        ret = sof_ipc_tx_message(sdev->ipc,
                                 config->hdr.cmd, config, size, &reply,
                                 sizeof(reply));

        if (ret < 0) {
                dev_err(sdev->dev, "error: failed to set DAI config for SSP%d\n",
                        config->dai_index);
                return ret;
        }

        /* set config for all DAI's with name matching the link name */
        ret = sof_set_dai_config(sdev, size, link, config);
        if (ret < 0)
                dev_err(sdev->dev, "error: failed to save DAI config for SSP%d\n",
                        config->dai_index);

        return ret;
}

static int sof_link_dmic_load(struct snd_soc_component *scomp, int index,
                              struct snd_soc_dai_link *link,
                              struct snd_soc_tplg_link_config *cfg,
                              struct snd_soc_tplg_hw_config *hw_config,
                              struct sof_ipc_dai_config *config)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &cfg->priv;
        struct sof_ipc_dai_config *ipc_config;
        struct sof_ipc_reply reply;
        struct sof_ipc_fw_ready *ready = &sdev->fw_ready;
        struct sof_ipc_fw_version *v = &ready->version;
        u32 size;
        int ret, j;

        /*
         * config is only used for the common params in dmic_params structure
         * that does not include the PDM controller config array
         * Set the common params to 0.
         */
        memset(&config->dmic, 0, sizeof(struct sof_ipc_dai_dmic_params));

        /* get DMIC tokens */
        ret = sof_parse_tokens(scomp, &config->dmic, dmic_tokens,
                               ARRAY_SIZE(dmic_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse dmic tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        /*
         * allocate memory for dmic dai config accounting for the
         * variable number of active pdm controllers
         * This will be the ipc payload for setting dai config
         */
        size = sizeof(*config) + sizeof(struct sof_ipc_dai_dmic_pdm_ctrl) *
                                        config->dmic.num_pdm_active;

        ipc_config = kzalloc(size, GFP_KERNEL);
        if (!ipc_config)
                return -ENOMEM;

        /* copy the common dai config and dmic params */
        memcpy(ipc_config, config, sizeof(*config));

        /*
         * alloc memory for private member
         * Used to track the pdm config array index currently being parsed
         */
        sdev->private = kzalloc(sizeof(u32), GFP_KERNEL);
        if (!sdev->private) {
                kfree(ipc_config);
                return -ENOMEM;
        }

        /* get DMIC PDM tokens */
        ret = sof_parse_tokens(scomp, &ipc_config->dmic.pdm[0], dmic_pdm_tokens,
                               ARRAY_SIZE(dmic_pdm_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse dmic pdm tokens failed %d\n",
                        le32_to_cpu(private->size));
                goto err;
        }

        /* set IPC header size */
        ipc_config->hdr.size = size;

        /* debug messages */
        dev_dbg(sdev->dev, "tplg: config DMIC%d driver version %d\n",
                ipc_config->dai_index, ipc_config->dmic.driver_ipc_version);
        dev_dbg(sdev->dev, "pdmclk_min %d pdm_clkmax %d duty_min %hd\n",
                ipc_config->dmic.pdmclk_min, ipc_config->dmic.pdmclk_max,
                ipc_config->dmic.duty_min);
        dev_dbg(sdev->dev, "duty_max %hd fifo_fs %d num_pdms active %d\n",
                ipc_config->dmic.duty_max, ipc_config->dmic.fifo_fs,
                ipc_config->dmic.num_pdm_active);
        dev_dbg(sdev->dev, "fifo word length %hd\n",
                ipc_config->dmic.fifo_bits);

        for (j = 0; j < ipc_config->dmic.num_pdm_active; j++) {
                dev_dbg(sdev->dev, "pdm %hd mic a %hd mic b %hd\n",
                        ipc_config->dmic.pdm[j].id,
                        ipc_config->dmic.pdm[j].enable_mic_a,
                        ipc_config->dmic.pdm[j].enable_mic_b);
                dev_dbg(sdev->dev, "pdm %hd polarity a %hd polarity b %hd\n",
                        ipc_config->dmic.pdm[j].id,
                        ipc_config->dmic.pdm[j].polarity_mic_a,
                        ipc_config->dmic.pdm[j].polarity_mic_b);
                dev_dbg(sdev->dev, "pdm %hd clk_edge %hd skew %hd\n",
                        ipc_config->dmic.pdm[j].id,
                        ipc_config->dmic.pdm[j].clk_edge,
                        ipc_config->dmic.pdm[j].skew);
        }

        if (SOF_ABI_VER(v->major, v->minor, v->micro) < SOF_ABI_VER(3, 0, 1)) {
                /* this takes care of backwards compatible handling of fifo_bits_b */
                ipc_config->dmic.reserved_2 = ipc_config->dmic.fifo_bits;
        }

        /* send message to DSP */
        ret = sof_ipc_tx_message(sdev->ipc,
                                 ipc_config->hdr.cmd, ipc_config, size, &reply,
                                 sizeof(reply));

        if (ret < 0) {
                dev_err(sdev->dev,
                        "error: failed to set DAI config for DMIC%d\n",
                        config->dai_index);
                goto err;
        }

        /* set config for all DAI's with name matching the link name */
        ret = sof_set_dai_config(sdev, size, link, ipc_config);
        if (ret < 0)
                dev_err(sdev->dev, "error: failed to save DAI config for DMIC%d\n",
                        config->dai_index);

err:
        kfree(sdev->private);
        kfree(ipc_config);

        return ret;
}

/*
 * for hda link, playback and capture are supported by different dai
 * in FW. Here get the dai_index, set dma channel of each dai
 * and send config to FW. In FW, each dai sets config by dai_index
 */
static int sof_link_hda_process(struct snd_sof_dev *sdev,
                                struct snd_soc_dai_link *link,
                                struct sof_ipc_dai_config *config,
                                int tx_slot,
                                int rx_slot)
{
        struct sof_ipc_reply reply;
        u32 size = sizeof(*config);
        struct snd_sof_dai *sof_dai;
        int found = 0;
        int ret;

        list_for_each_entry(sof_dai, &sdev->dai_list, list) {
                if (!sof_dai->name)
                        continue;

                if (strcmp(link->name, sof_dai->name) == 0) {
                        if (sof_dai->comp_dai.direction ==
                            SNDRV_PCM_STREAM_PLAYBACK) {
                                if (!link->dpcm_playback)
                                        return -EINVAL;

                                config->hda.link_dma_ch = tx_slot;
                        } else {
                                if (!link->dpcm_capture)
                                        return -EINVAL;

                                config->hda.link_dma_ch = rx_slot;
                        }

                        config->dai_index = sof_dai->comp_dai.dai_index;
                        found = 1;

                        /* save config in dai component */
                        sof_dai->dai_config = kmemdup(config, size, GFP_KERNEL);
                        if (!sof_dai->dai_config)
                                return -ENOMEM;

                        /* send message to DSP */
                        ret = sof_ipc_tx_message(sdev->ipc,
                                                 config->hdr.cmd, config, size,
                                                 &reply, sizeof(reply));

                        if (ret < 0) {
                                dev_err(sdev->dev, "error: failed to set DAI config for direction:%d of HDA dai %d\n",
                                        sof_dai->comp_dai.direction,
                                        config->dai_index);

                                return ret;
                        }
                }
        }

        /*
         * machine driver may define a dai link with playback and capture
         * dai enabled, but the dai link in topology would support both, one
         * or none of them. Here print a warning message to notify user
         */
        if (!found) {
                dev_warn(sdev->dev, "warning: failed to find dai for dai link %s",
                         link->name);
        }

        return 0;
}

static int sof_link_hda_load(struct snd_soc_component *scomp, int index,
                             struct snd_soc_dai_link *link,
                             struct snd_soc_tplg_link_config *cfg,
                             struct snd_soc_tplg_hw_config *hw_config,
                             struct sof_ipc_dai_config *config)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_dai_link_component dai_component;
        struct snd_soc_tplg_private *private = &cfg->priv;
        struct snd_soc_dai *dai;
        u32 size = sizeof(*config);
        u32 tx_num = 0;
        u32 tx_slot = 0;
        u32 rx_num = 0;
        u32 rx_slot = 0;
        int ret;

        /* init IPC */
        memset(&dai_component, 0, sizeof(dai_component));
        memset(&config->hda, 0, sizeof(struct sof_ipc_dai_hda_params));
        config->hdr.size = size;

        /* get any bespoke DAI tokens */
        ret = sof_parse_tokens(scomp, config, hda_tokens,
                               ARRAY_SIZE(hda_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse hda tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        dai_component.dai_name = link->cpu_dai_name;
        dai = snd_soc_find_dai(&dai_component);
        if (!dai) {
                dev_err(sdev->dev, "error: failed to find dai %s in %s",
                        dai_component.dai_name, __func__);
                return -EINVAL;
        }

        if (link->dpcm_playback)
                tx_num = 1;

        if (link->dpcm_capture)
                rx_num = 1;

        ret = snd_soc_dai_get_channel_map(dai, &tx_num, &tx_slot,
                                          &rx_num, &rx_slot);
        if (ret < 0) {
                dev_err(sdev->dev, "error: failed to get dma channel for HDA%d\n",
                        config->dai_index);

                return ret;
        }

        ret = sof_link_hda_process(sdev, link, config, tx_slot, rx_slot);
        if (ret < 0)
                dev_err(sdev->dev, "error: failed to process hda dai link %s",
                        link->name);

        return ret;
}

/* DAI link - used for any driver specific init */
static int sof_link_load(struct snd_soc_component *scomp, int index,
                         struct snd_soc_dai_link *link,
                         struct snd_soc_tplg_link_config *cfg)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_tplg_private *private = &cfg->priv;
        struct sof_ipc_dai_config config;
        struct snd_soc_tplg_hw_config *hw_config;
        int num_hw_configs;
        int ret;
        int i = 0;

        link->platform_name = dev_name(sdev->dev);

        /*
         * Set nonatomic property for FE dai links as their trigger action
         * involves IPC's.
         */
        if (!link->no_pcm) {
                link->nonatomic = true;

                /* nothing more to do for FE dai links */
                return 0;
        }

        /* check we have some tokens - we need at least DAI type */
        if (le32_to_cpu(private->size) == 0) {
                dev_err(sdev->dev, "error: expected tokens for DAI, none found\n");
                return -EINVAL;
        }

        /* Send BE DAI link configurations to DSP */
        memset(&config, 0, sizeof(config));

        /* get any common DAI tokens */
        ret = sof_parse_tokens(scomp, &config, dai_link_tokens,
                               ARRAY_SIZE(dai_link_tokens), private->array,
                               le32_to_cpu(private->size));
        if (ret != 0) {
                dev_err(sdev->dev, "error: parse link tokens failed %d\n",
                        le32_to_cpu(private->size));
                return ret;
        }

        /*
         * DAI links are expected to have at least 1 hw_config.
         * But some older topologies might have no hw_config for HDA dai links.
         */
        num_hw_configs = le32_to_cpu(cfg->num_hw_configs);
        if (!num_hw_configs) {
                if (config.type != SOF_DAI_INTEL_HDA) {
                        dev_err(sdev->dev, "error: unexpected DAI config count %d!\n",
                                le32_to_cpu(cfg->num_hw_configs));
                        return -EINVAL;
                }
        } else {
                dev_dbg(sdev->dev, "tplg: %d hw_configs found, default id: %d!\n",
                        cfg->num_hw_configs, le32_to_cpu(cfg->default_hw_config_id));

                for (i = 0; i < num_hw_configs; i++) {
                        if (cfg->hw_config[i].id == cfg->default_hw_config_id)
                                break;
                }

                if (i == num_hw_configs) {
                        dev_err(sdev->dev, "error: default hw_config id: %d not found!\n",
                                le32_to_cpu(cfg->default_hw_config_id));
                        return -EINVAL;
                }
        }

        /* configure dai IPC message */
        hw_config = &cfg->hw_config[i];

        config.hdr.cmd = SOF_IPC_GLB_DAI_MSG | SOF_IPC_DAI_CONFIG;
        config.format = le32_to_cpu(hw_config->fmt);

        /* now load DAI specific data and send IPC - type comes from token */
        switch (config.type) {
        case SOF_DAI_INTEL_SSP:
                ret = sof_link_ssp_load(scomp, index, link, cfg, hw_config,
                                        &config);
                break;
        case SOF_DAI_INTEL_DMIC:
                ret = sof_link_dmic_load(scomp, index, link, cfg, hw_config,
                                         &config);
                break;
        case SOF_DAI_INTEL_HDA:
                ret = sof_link_hda_load(scomp, index, link, cfg, hw_config,
                                        &config);
                break;
        default:
                dev_err(sdev->dev, "error: invalid DAI type %d\n", config.type);
                ret = -EINVAL;
                break;
        }
        if (ret < 0)
                return ret;

        return 0;
}

static int sof_link_hda_unload(struct snd_sof_dev *sdev,
                               struct snd_soc_dai_link *link)
{
        struct snd_soc_dai_link_component dai_component;
        struct snd_soc_dai *dai;
        int ret = 0;

        memset(&dai_component, 0, sizeof(dai_component));
        dai_component.dai_name = link->cpu_dai_name;
        dai = snd_soc_find_dai(&dai_component);
        if (!dai) {
                dev_err(sdev->dev, "error: failed to find dai %s in %s",
                        dai_component.dai_name, __func__);
                return -EINVAL;
        }

        /*
         * FIXME: this call to hw_free is mainly to release the link DMA ID.
         * This is abusing the API and handling SOC internals is not
         * recommended. This part will be reworked.
         */
        if (dai->driver->ops->hw_free)
                ret = dai->driver->ops->hw_free(NULL, dai);
        if (ret < 0)
                dev_err(sdev->dev, "error: failed to free hda resource for %s\n",
                        link->name);

        return ret;
}

static int sof_link_unload(struct snd_soc_component *scomp,
                           struct snd_soc_dobj *dobj)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct snd_soc_dai_link *link =
                container_of(dobj, struct snd_soc_dai_link, dobj);

        struct snd_sof_dai *sof_dai;
        int ret = 0;

        /* only BE link is loaded by sof */
        if (!link->no_pcm)
                return 0;

        list_for_each_entry(sof_dai, &sdev->dai_list, list) {
                if (!sof_dai->name)
                        continue;

                if (strcmp(link->name, sof_dai->name) == 0)
                        goto found;
        }

        dev_err(sdev->dev, "error: failed to find dai %s in %s",
                link->name, __func__);
        return -EINVAL;
found:

        switch (sof_dai->dai_config->type) {
        case SOF_DAI_INTEL_SSP:
        case SOF_DAI_INTEL_DMIC:
                /* no resource needs to be released for SSP and DMIC */
                break;
        case SOF_DAI_INTEL_HDA:
                ret = sof_link_hda_unload(sdev, link);
                break;
        default:
                dev_err(sdev->dev, "error: invalid DAI type %d\n",
                        sof_dai->dai_config->type);
                ret = -EINVAL;
                break;
        }

        return ret;
}

/* DAI link - used for any driver specific init */
static int sof_route_load(struct snd_soc_component *scomp, int index,
                          struct snd_soc_dapm_route *route)
{
        struct snd_sof_dev *sdev = snd_soc_component_get_drvdata(scomp);
        struct sof_ipc_pipe_comp_connect *connect;
        struct snd_sof_widget *source_swidget, *sink_swidget;
        struct snd_soc_dobj *dobj = &route->dobj;
        struct snd_sof_route *sroute;
        struct sof_ipc_reply reply;
        int ret = 0;

        /* allocate memory for sroute and connect */
        sroute = kzalloc(sizeof(*sroute), GFP_KERNEL);
        if (!sroute)
                return -ENOMEM;

        sroute->sdev = sdev;

        connect = kzalloc(sizeof(*connect), GFP_KERNEL);
        if (!connect) {
                kfree(sroute);
                return -ENOMEM;
        }

        connect->hdr.size = sizeof(*connect);
        connect->hdr.cmd = SOF_IPC_GLB_TPLG_MSG | SOF_IPC_TPLG_COMP_CONNECT;

        dev_dbg(sdev->dev, "sink %s control %s source %s\n",
                route->sink, route->control ? route->control : "none",
                route->source);

        /* source component */
        source_swidget = snd_sof_find_swidget(sdev, (char *)route->source);
        if (!source_swidget) {
                dev_err(sdev->dev, "error: source %s not found\n",
                        route->source);
                ret = -EINVAL;
                goto err;
        }

        /*
         * Virtual widgets of type output/out_drv may be added in topology
         * for compatibility. These are not handled by the FW.
         * So, don't send routes whose source/sink widget is of such types
         * to the DSP.
         */
        if (source_swidget->id == snd_soc_dapm_out_drv ||
            source_swidget->id == snd_soc_dapm_output)
                goto err;

        connect->source_id = source_swidget->comp_id;

        /* sink component */
        sink_swidget = snd_sof_find_swidget(sdev, (char *)route->sink);
        if (!sink_swidget) {
                dev_err(sdev->dev, "error: sink %s not found\n",
                        route->sink);
                ret = -EINVAL;
                goto err;
        }

        /*
         * Don't send routes whose sink widget is of type
         * output or out_drv to the DSP
         */
        if (sink_swidget->id == snd_soc_dapm_out_drv ||
            sink_swidget->id == snd_soc_dapm_output)
                goto err;

        connect->sink_id = sink_swidget->comp_id;

        /*
         * For virtual routes, both sink and source are not
         * buffer. Since only buffer linked to component is supported by
         * FW, others are reported as error, add check in route function,
         * do not send it to FW when both source and sink are not buffer
         */
        if (source_swidget->id != snd_soc_dapm_buffer &&
            sink_swidget->id != snd_soc_dapm_buffer) {
                dev_dbg(sdev->dev, "warning: neither Linked source component %s nor sink component %s is of buffer type, ignoring link\n",
                        route->source, route->sink);
                ret = 0;
                goto err;
        } else {
                ret = sof_ipc_tx_message(sdev->ipc,
                                         connect->hdr.cmd,
                                         connect, sizeof(*connect),
                                         &reply, sizeof(reply));

                /* check IPC return value */
                if (ret < 0) {
                        dev_err(sdev->dev, "error: failed to add route sink %s control %s source %s\n",
                                route->sink,
                                route->control ? route->control : "none",
                                route->source);
                        goto err;
                }

                /* check IPC reply */
                if (reply.error < 0) {
                        dev_err(sdev->dev, "error: DSP failed to add route sink %s control %s source %s result %d\n",
                                route->sink,
                                route->control ? route->control : "none",
                                route->source, reply.error);
                        ret = reply.error;
                        goto err;
                }

                sroute->route = route;
                dobj->private = sroute;
                sroute->private = connect;

                /* add route to route list */
                list_add(&sroute->list, &sdev->route_list);

                return ret;
        }

err:
        kfree(connect);
        kfree(sroute);
        return ret;
}