/*
 *  skl-message.c - HDA DSP interface for FW registration, Pipe and Module
 *  configurations
 *
 *  Copyright (C) 2015 Intel Corp
 *  Author:Rafal Redzimski <rafal.f.redzimski@intel.com>
 *         Jeeja KP <jeeja.kp@intel.com>
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#include <linux/slab.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include "skl-sst-dsp.h"
#include "skl-sst-ipc.h"
#include "skl.h"
#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
#include "skl-topology.h"
#include "skl-tplg-interface.h"

static int skl_alloc_dma_buf(struct device *dev,
                struct snd_dma_buffer *dmab, size_t size)
{
        struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
        struct hdac_bus *bus = ebus_to_hbus(ebus);

        if (!bus)
                return -ENODEV;

        return  bus->io_ops->dma_alloc_pages(bus, SNDRV_DMA_TYPE_DEV, size, dmab);
}

static int skl_free_dma_buf(struct device *dev, struct snd_dma_buffer *dmab)
{
        struct hdac_ext_bus *ebus = dev_get_drvdata(dev);
        struct hdac_bus *bus = ebus_to_hbus(ebus);

        if (!bus)
                return -ENODEV;

        bus->io_ops->dma_free_pages(bus, dmab);

        return 0;
}

#define NOTIFICATION_PARAM_ID 3
#define NOTIFICATION_MASK 0xf

/* disable notfication for underruns/overruns from firmware module */
static void skl_dsp_enable_notification(struct skl_sst *ctx, bool enable)
{
        struct notification_mask mask;
        struct skl_ipc_large_config_msg msg = {0};

        mask.notify = NOTIFICATION_MASK;
        mask.enable = enable;

        msg.large_param_id = NOTIFICATION_PARAM_ID;
        msg.param_data_size = sizeof(mask);

        skl_ipc_set_large_config(&ctx->ipc, &msg, (u32 *)&mask);
}

static struct skl_dsp_loader_ops skl_get_loader_ops(void)
{
        struct skl_dsp_loader_ops loader_ops;

        memset(&loader_ops, 0, sizeof(struct skl_dsp_loader_ops));

        loader_ops.alloc_dma_buf = skl_alloc_dma_buf;
        loader_ops.free_dma_buf = skl_free_dma_buf;

        return loader_ops;
};

static const struct skl_dsp_ops dsp_ops[] = {
        {
                .id = 0x9d70,
                .loader_ops = skl_get_loader_ops,
                .init = skl_sst_dsp_init,
                .cleanup = skl_sst_dsp_cleanup
        },
};

static int skl_get_dsp_ops(int pci_id)
{
        int i;

        for (i = 0; i < ARRAY_SIZE(dsp_ops); i++) {
                if (dsp_ops[i].id == pci_id)
                        return i;
        }

        return -EINVAL;
}

int skl_init_dsp(struct skl *skl)
{
        void __iomem *mmio_base;
        struct hdac_ext_bus *ebus = &skl->ebus;
        struct hdac_bus *bus = ebus_to_hbus(ebus);
        struct skl_dsp_loader_ops loader_ops;
        int irq = bus->irq;
        int ret, index;

        /* enable ppcap interrupt */
        snd_hdac_ext_bus_ppcap_enable(&skl->ebus, true);
        snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, true);

        /* read the BAR of the ADSP MMIO */
        mmio_base = pci_ioremap_bar(skl->pci, 4);
        if (mmio_base == NULL) {
                dev_err(bus->dev, "ioremap error\n");
                return -ENXIO;
        }

        index  = skl_get_dsp_ops(skl->pci->device);
        if (index  < 0)
                return -EINVAL;

        loader_ops = dsp_ops[index].loader_ops();
        ret = dsp_ops[index].init(bus->dev, mmio_base, irq,
                        skl->fw_name, loader_ops, &skl->skl_sst);

        if (ret < 0)
                return ret;

        skl_dsp_enable_notification(skl->skl_sst, false);
        dev_dbg(bus->dev, "dsp registration status=%d\n", ret);

        return ret;
}

int skl_free_dsp(struct skl *skl)
{
        struct hdac_ext_bus *ebus = &skl->ebus;
        struct hdac_bus *bus = ebus_to_hbus(ebus);
        struct skl_sst *ctx = skl->skl_sst;
        int index;

        /* disable  ppcap interrupt */
        snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, false);

        index = skl_get_dsp_ops(skl->pci->device);
        if (index  < 0)
                return -EIO;

        dsp_ops[index].cleanup(bus->dev, ctx);

        if (ctx->dsp->addr.lpe)
                iounmap(ctx->dsp->addr.lpe);

        return 0;
}

int skl_suspend_dsp(struct skl *skl)
{
        struct skl_sst *ctx = skl->skl_sst;
        int ret;

        /* if ppcap is not supported return 0 */
        if (!skl->ebus.ppcap)
                return 0;

        ret = skl_dsp_sleep(ctx->dsp);
        if (ret < 0)
                return ret;

        /* disable ppcap interrupt */
        snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, false);
        snd_hdac_ext_bus_ppcap_enable(&skl->ebus, false);

        return 0;
}

int skl_resume_dsp(struct skl *skl)
{
        struct skl_sst *ctx = skl->skl_sst;
        int ret;

        /* if ppcap is not supported return 0 */
        if (!skl->ebus.ppcap)
                return 0;

        /* enable ppcap interrupt */
        snd_hdac_ext_bus_ppcap_enable(&skl->ebus, true);
        snd_hdac_ext_bus_ppcap_int_enable(&skl->ebus, true);

        ret = skl_dsp_wake(ctx->dsp);
        if (ret < 0)
                return ret;

        skl_dsp_enable_notification(skl->skl_sst, false);
        return ret;
}

enum skl_bitdepth skl_get_bit_depth(int params)
{
        switch (params) {
        case 8:
                return SKL_DEPTH_8BIT;

        case 16:
                return SKL_DEPTH_16BIT;

        case 24:
                return SKL_DEPTH_24BIT;

        case 32:
                return SKL_DEPTH_32BIT;

        default:
                return SKL_DEPTH_INVALID;

        }
}

/*
 * Each module in DSP expects a base module configuration, which consists of
 * PCM format information, which we calculate in driver and resource values
 * which are read from widget information passed through topology binary
 * This is send when we create a module with INIT_INSTANCE IPC msg
 */
static void skl_set_base_module_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_base_cfg *base_cfg)
{
        struct skl_module_fmt *format = &mconfig->in_fmt[0];

        base_cfg->audio_fmt.number_of_channels = (u8)format->channels;

        base_cfg->audio_fmt.s_freq = format->s_freq;
        base_cfg->audio_fmt.bit_depth = format->bit_depth;
        base_cfg->audio_fmt.valid_bit_depth = format->valid_bit_depth;
        base_cfg->audio_fmt.ch_cfg = format->ch_cfg;

        dev_dbg(ctx->dev, "bit_depth=%x valid_bd=%x ch_config=%x\n",
                        format->bit_depth, format->valid_bit_depth,
                        format->ch_cfg);

        base_cfg->audio_fmt.channel_map = format->ch_map;

        base_cfg->audio_fmt.interleaving = format->interleaving_style;

        base_cfg->cps = mconfig->mcps;
        base_cfg->ibs = mconfig->ibs;
        base_cfg->obs = mconfig->obs;
        base_cfg->is_pages = mconfig->mem_pages;
}

/*
 * Copies copier capabilities into copier module and updates copier module
 * config size.
 */
static void skl_copy_copier_caps(struct skl_module_cfg *mconfig,
                                struct skl_cpr_cfg *cpr_mconfig)
{
        if (mconfig->formats_config.caps_size == 0)
                return;

        memcpy(cpr_mconfig->gtw_cfg.config_data,
                        mconfig->formats_config.caps,
                        mconfig->formats_config.caps_size);

        cpr_mconfig->gtw_cfg.config_length =
                        (mconfig->formats_config.caps_size) / 4;
}

#define SKL_NON_GATEWAY_CPR_NODE_ID 0xFFFFFFFF
/*
 * Calculate the gatewat settings required for copier module, type of
 * gateway and index of gateway to use
 */
static u32 skl_get_node_id(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig)
{
        union skl_connector_node_id node_id = {0};
        union skl_ssp_dma_node ssp_node  = {0};
        struct skl_pipe_params *params = mconfig->pipe->p_params;

        switch (mconfig->dev_type) {
        case SKL_DEVICE_BT:
                node_id.node.dma_type =
                        (SKL_CONN_SOURCE == mconfig->hw_conn_type) ?
                        SKL_DMA_I2S_LINK_OUTPUT_CLASS :
                        SKL_DMA_I2S_LINK_INPUT_CLASS;
                node_id.node.vindex = params->host_dma_id +
                                        (mconfig->vbus_id << 3);
                break;

        case SKL_DEVICE_I2S:
                node_id.node.dma_type =
                        (SKL_CONN_SOURCE == mconfig->hw_conn_type) ?
                        SKL_DMA_I2S_LINK_OUTPUT_CLASS :
                        SKL_DMA_I2S_LINK_INPUT_CLASS;
                ssp_node.dma_node.time_slot_index = mconfig->time_slot;
                ssp_node.dma_node.i2s_instance = mconfig->vbus_id;
                node_id.node.vindex = ssp_node.val;
                break;

        case SKL_DEVICE_DMIC:
                node_id.node.dma_type = SKL_DMA_DMIC_LINK_INPUT_CLASS;
                node_id.node.vindex = mconfig->vbus_id +
                                         (mconfig->time_slot);
                break;

        case SKL_DEVICE_HDALINK:
                node_id.node.dma_type =
                        (SKL_CONN_SOURCE == mconfig->hw_conn_type) ?
                        SKL_DMA_HDA_LINK_OUTPUT_CLASS :
                        SKL_DMA_HDA_LINK_INPUT_CLASS;
                node_id.node.vindex = params->link_dma_id;
                break;

        case SKL_DEVICE_HDAHOST:
                node_id.node.dma_type =
                        (SKL_CONN_SOURCE == mconfig->hw_conn_type) ?
                        SKL_DMA_HDA_HOST_OUTPUT_CLASS :
                        SKL_DMA_HDA_HOST_INPUT_CLASS;
                node_id.node.vindex = params->host_dma_id;
                break;

        default:
                node_id.val = 0xFFFFFFFF;
                break;
        }

        return node_id.val;
}

static void skl_setup_cpr_gateway_cfg(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_cpr_cfg *cpr_mconfig)
{
        cpr_mconfig->gtw_cfg.node_id = skl_get_node_id(ctx, mconfig);

        if (cpr_mconfig->gtw_cfg.node_id == SKL_NON_GATEWAY_CPR_NODE_ID) {
                cpr_mconfig->cpr_feature_mask = 0;
                return;
        }

        if (SKL_CONN_SOURCE == mconfig->hw_conn_type)
                cpr_mconfig->gtw_cfg.dma_buffer_size = 2 * mconfig->obs;
        else
                cpr_mconfig->gtw_cfg.dma_buffer_size = 2 * mconfig->ibs;

        cpr_mconfig->cpr_feature_mask = 0;
        cpr_mconfig->gtw_cfg.config_length  = 0;

        skl_copy_copier_caps(mconfig, cpr_mconfig);
}

#define DMA_CONTROL_ID 5

int skl_dsp_set_dma_control(struct skl_sst *ctx, struct skl_module_cfg *mconfig)
{
        struct skl_dma_control *dma_ctrl;
        struct skl_i2s_config_blob config_blob;
        struct skl_ipc_large_config_msg msg = {0};
        int err = 0;


        /*
         * if blob size is same as capablity size, then no dma control
         * present so return
         */
        if (mconfig->formats_config.caps_size == sizeof(config_blob))
                return 0;

        msg.large_param_id = DMA_CONTROL_ID;
        msg.param_data_size = sizeof(struct skl_dma_control) +
                                mconfig->formats_config.caps_size;

        dma_ctrl = kzalloc(msg.param_data_size, GFP_KERNEL);
        if (dma_ctrl == NULL)
                return -ENOMEM;

        dma_ctrl->node_id = skl_get_node_id(ctx, mconfig);

        /* size in dwords */
        dma_ctrl->config_length = sizeof(config_blob) / 4;

        memcpy(dma_ctrl->config_data, mconfig->formats_config.caps,
                                mconfig->formats_config.caps_size);

        err = skl_ipc_set_large_config(&ctx->ipc, &msg, (u32 *)dma_ctrl);

        kfree(dma_ctrl);

        return err;
}

static void skl_setup_out_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_audio_data_format *out_fmt)
{
        struct skl_module_fmt *format = &mconfig->out_fmt[0];

        out_fmt->number_of_channels = (u8)format->channels;
        out_fmt->s_freq = format->s_freq;
        out_fmt->bit_depth = format->bit_depth;
        out_fmt->valid_bit_depth = format->valid_bit_depth;
        out_fmt->ch_cfg = format->ch_cfg;

        out_fmt->channel_map = format->ch_map;
        out_fmt->interleaving = format->interleaving_style;
        out_fmt->sample_type = format->sample_type;

        dev_dbg(ctx->dev, "copier out format chan=%d fre=%d bitdepth=%d\n",
                out_fmt->number_of_channels, format->s_freq, format->bit_depth);
}

/*
 * DSP needs SRC module for frequency conversion, SRC takes base module
 * configuration and the target frequency as extra parameter passed as src
 * config
 */
static void skl_set_src_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_src_module_cfg *src_mconfig)
{
        struct skl_module_fmt *fmt = &mconfig->out_fmt[0];

        skl_set_base_module_format(ctx, mconfig,
                (struct skl_base_cfg *)src_mconfig);

        src_mconfig->src_cfg = fmt->s_freq;
}

/*
 * DSP needs updown module to do channel conversion. updown module take base
 * module configuration and channel configuration
 * It also take coefficients and now we have defaults applied here
 */
static void skl_set_updown_mixer_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_up_down_mixer_cfg *mixer_mconfig)
{
        struct skl_module_fmt *fmt = &mconfig->out_fmt[0];
        int i = 0;

        skl_set_base_module_format(ctx, mconfig,
                (struct skl_base_cfg *)mixer_mconfig);
        mixer_mconfig->out_ch_cfg = fmt->ch_cfg;

        /* Select F/W default coefficient */
        mixer_mconfig->coeff_sel = 0x0;

        /* User coeff, don't care since we are selecting F/W defaults */
        for (i = 0; i < UP_DOWN_MIXER_MAX_COEFF; i++)
                mixer_mconfig->coeff[i] = 0xDEADBEEF;
}

/*
 * 'copier' is DSP internal module which copies data from Host DMA (HDA host
 * dma) or link (hda link, SSP, PDM)
 * Here we calculate the copier module parameters, like PCM format, output
 * format, gateway settings
 * copier_module_config is sent as input buffer with INIT_INSTANCE IPC msg
 */
static void skl_set_copier_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_cpr_cfg *cpr_mconfig)
{
        struct skl_audio_data_format *out_fmt = &cpr_mconfig->out_fmt;
        struct skl_base_cfg *base_cfg = (struct skl_base_cfg *)cpr_mconfig;

        skl_set_base_module_format(ctx, mconfig, base_cfg);

        skl_setup_out_format(ctx, mconfig, out_fmt);
        skl_setup_cpr_gateway_cfg(ctx, mconfig, cpr_mconfig);
}

/*
 * Algo module are DSP pre processing modules. Algo module take base module
 * configuration and params
 */

static void skl_set_algo_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_algo_cfg *algo_mcfg)
{
        struct skl_base_cfg *base_cfg = (struct skl_base_cfg *)algo_mcfg;

        skl_set_base_module_format(ctx, mconfig, base_cfg);

        if (mconfig->formats_config.caps_size == 0)
                return;

        memcpy(algo_mcfg->params,
                        mconfig->formats_config.caps,
                        mconfig->formats_config.caps_size);

}

/*
 * Mic select module allows selecting one or many input channels, thus
 * acting as a demux.
 *
 * Mic select module take base module configuration and out-format
 * configuration
 */
static void skl_set_base_outfmt_format(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig,
                        struct skl_base_outfmt_cfg *base_outfmt_mcfg)
{
        struct skl_audio_data_format *out_fmt = &base_outfmt_mcfg->out_fmt;
        struct skl_base_cfg *base_cfg =
                                (struct skl_base_cfg *)base_outfmt_mcfg;

        skl_set_base_module_format(ctx, mconfig, base_cfg);
        skl_setup_out_format(ctx, mconfig, out_fmt);
}

static u16 skl_get_module_param_size(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig)
{
        u16 param_size;

        switch (mconfig->m_type) {
        case SKL_MODULE_TYPE_COPIER:
                param_size = sizeof(struct skl_cpr_cfg);
                param_size += mconfig->formats_config.caps_size;
                return param_size;

        case SKL_MODULE_TYPE_SRCINT:
                return sizeof(struct skl_src_module_cfg);

        case SKL_MODULE_TYPE_UPDWMIX:
                return sizeof(struct skl_up_down_mixer_cfg);

        case SKL_MODULE_TYPE_ALGO:
                param_size = sizeof(struct skl_base_cfg);
                param_size += mconfig->formats_config.caps_size;
                return param_size;

        case SKL_MODULE_TYPE_BASE_OUTFMT:
                return sizeof(struct skl_base_outfmt_cfg);

        default:
                /*
                 * return only base cfg when no specific module type is
                 * specified
                 */
                return sizeof(struct skl_base_cfg);
        }

        return 0;
}

/*
 * DSP firmware supports various modules like copier, SRC, updown etc.
 * These modules required various parameters to be calculated and sent for
 * the module initialization to DSP. By default a generic module needs only
 * base module format configuration
 */

static int skl_set_module_format(struct skl_sst *ctx,
                        struct skl_module_cfg *module_config,
                        u16 *module_config_size,
                        void **param_data)
{
        u16 param_size;

        param_size  = skl_get_module_param_size(ctx, module_config);

        *param_data = kzalloc(param_size, GFP_KERNEL);
        if (NULL == *param_data)
                return -ENOMEM;

        *module_config_size = param_size;

        switch (module_config->m_type) {
        case SKL_MODULE_TYPE_COPIER:
                skl_set_copier_format(ctx, module_config, *param_data);
                break;

        case SKL_MODULE_TYPE_SRCINT:
                skl_set_src_format(ctx, module_config, *param_data);
                break;

        case SKL_MODULE_TYPE_UPDWMIX:
                skl_set_updown_mixer_format(ctx, module_config, *param_data);
                break;

        case SKL_MODULE_TYPE_ALGO:
                skl_set_algo_format(ctx, module_config, *param_data);
                break;

        case SKL_MODULE_TYPE_BASE_OUTFMT:
                skl_set_base_outfmt_format(ctx, module_config, *param_data);
                break;

        default:
                skl_set_base_module_format(ctx, module_config, *param_data);
                break;

        }

        dev_dbg(ctx->dev, "Module type=%d config size: %d bytes\n",
                        module_config->id.module_id, param_size);
        print_hex_dump(KERN_DEBUG, "Module params:", DUMP_PREFIX_OFFSET, 8, 4,
                        *param_data, param_size, false);
        return 0;
}

static int skl_get_queue_index(struct skl_module_pin *mpin,
                                struct skl_module_inst_id id, int max)
{
        int i;

        for (i = 0; i < max; i++)  {
                if (mpin[i].id.module_id == id.module_id &&
                        mpin[i].id.instance_id == id.instance_id)
                        return i;
        }

        return -EINVAL;
}

/*
 * Allocates queue for each module.
 * if dynamic, the pin_index is allocated 0 to max_pin.
 * In static, the pin_index is fixed based on module_id and instance id
 */
static int skl_alloc_queue(struct skl_module_pin *mpin,
                        struct skl_module_cfg *tgt_cfg, int max)
{
        int i;
        struct skl_module_inst_id id = tgt_cfg->id;
        /*
         * if pin in dynamic, find first free pin
         * otherwise find match module and instance id pin as topology will
         * ensure a unique pin is assigned to this so no need to
         * allocate/free
         */
        for (i = 0; i < max; i++)  {
                if (mpin[i].is_dynamic) {
                        if (!mpin[i].in_use &&
                                mpin[i].pin_state == SKL_PIN_UNBIND) {

                                mpin[i].in_use = true;
                                mpin[i].id.module_id = id.module_id;
                                mpin[i].id.instance_id = id.instance_id;
                                mpin[i].tgt_mcfg = tgt_cfg;
                                return i;
                        }
                } else {
                        if (mpin[i].id.module_id == id.module_id &&
                                mpin[i].id.instance_id == id.instance_id &&
                                mpin[i].pin_state == SKL_PIN_UNBIND) {

                                mpin[i].tgt_mcfg = tgt_cfg;
                                return i;
                        }
                }
        }

        return -EINVAL;
}

static void skl_free_queue(struct skl_module_pin *mpin, int q_index)
{
        if (mpin[q_index].is_dynamic) {
                mpin[q_index].in_use = false;
                mpin[q_index].id.module_id = 0;
                mpin[q_index].id.instance_id = 0;
        }
        mpin[q_index].pin_state = SKL_PIN_UNBIND;
        mpin[q_index].tgt_mcfg = NULL;
}

/* Module state will be set to unint, if all the out pin state is UNBIND */

static void skl_clear_module_state(struct skl_module_pin *mpin, int max,
                                                struct skl_module_cfg *mcfg)
{
        int i;
        bool found = false;

        for (i = 0; i < max; i++)  {
                if (mpin[i].pin_state == SKL_PIN_UNBIND)
                        continue;
                found = true;
                break;
        }

        if (!found)
                mcfg->m_state = SKL_MODULE_UNINIT;
        return;
}

/*
 * A module needs to be instanataited in DSP. A mdoule is present in a
 * collection of module referred as a PIPE.
 * We first calculate the module format, based on module type and then
 * invoke the DSP by sending IPC INIT_INSTANCE using ipc helper
 */
int skl_init_module(struct skl_sst *ctx,
                        struct skl_module_cfg *mconfig)
{
        u16 module_config_size = 0;
        void *param_data = NULL;
        int ret;
        struct skl_ipc_init_instance_msg msg;

        dev_dbg(ctx->dev, "%s: module_id = %d instance=%d\n", __func__,
                 mconfig->id.module_id, mconfig->id.instance_id);

        if (mconfig->pipe->state != SKL_PIPE_CREATED) {
                dev_err(ctx->dev, "Pipe not created state= %d pipe_id= %d\n",
                                 mconfig->pipe->state, mconfig->pipe->ppl_id);
                return -EIO;
        }

        ret = skl_set_module_format(ctx, mconfig,
                        &module_config_size, &param_data);
        if (ret < 0) {
                dev_err(ctx->dev, "Failed to set module format ret=%d\n", ret);
                return ret;
        }

        msg.module_id = mconfig->id.module_id;
        msg.instance_id = mconfig->id.instance_id;
        msg.ppl_instance_id = mconfig->pipe->ppl_id;
        msg.param_data_size = module_config_size;
        msg.core_id = mconfig->core_id;

        ret = skl_ipc_init_instance(&ctx->ipc, &msg, param_data);
        if (ret < 0) {
                dev_err(ctx->dev, "Failed to init instance ret=%d\n", ret);
                kfree(param_data);
                return ret;
        }
        mconfig->m_state = SKL_MODULE_INIT_DONE;

        return ret;
}

static void skl_dump_bind_info(struct skl_sst *ctx, struct skl_module_cfg
        *src_module, struct skl_module_cfg *dst_module)
{
        dev_dbg(ctx->dev, "%s: src module_id = %d  src_instance=%d\n",
                __func__, src_module->id.module_id, src_module->id.instance_id);
        dev_dbg(ctx->dev, "%s: dst_module=%d dst_instacne=%d\n", __func__,
                 dst_module->id.module_id, dst_module->id.instance_id);

        dev_dbg(ctx->dev, "src_module state = %d dst module state = %d\n",
                src_module->m_state, dst_module->m_state);
}

/*
 * On module freeup, we need to unbind the module with modules
 * it is already bind.
 * Find the pin allocated and unbind then using bind_unbind IPC
 */
int skl_unbind_modules(struct skl_sst *ctx,
                        struct skl_module_cfg *src_mcfg,
                        struct skl_module_cfg *dst_mcfg)
{
        int ret;
        struct skl_ipc_bind_unbind_msg msg;
        struct skl_module_inst_id src_id = src_mcfg->id;
        struct skl_module_inst_id dst_id = dst_mcfg->id;
        int in_max = dst_mcfg->max_in_queue;
        int out_max = src_mcfg->max_out_queue;
        int src_index, dst_index, src_pin_state, dst_pin_state;

        skl_dump_bind_info(ctx, src_mcfg, dst_mcfg);

        /* get src queue index */
        src_index = skl_get_queue_index(src_mcfg->m_out_pin, dst_id, out_max);
        if (src_index < 0)
                return 0;

        msg.src_queue = src_index;

        /* get dst queue index */
        dst_index  = skl_get_queue_index(dst_mcfg->m_in_pin, src_id, in_max);
        if (dst_index < 0)
                return 0;

        msg.dst_queue = dst_index;

        src_pin_state = src_mcfg->m_out_pin[src_index].pin_state;
        dst_pin_state = dst_mcfg->m_in_pin[dst_index].pin_state;

        if (src_pin_state != SKL_PIN_BIND_DONE ||
                dst_pin_state != SKL_PIN_BIND_DONE)
                return 0;

        msg.module_id = src_mcfg->id.module_id;
        msg.instance_id = src_mcfg->id.instance_id;
        msg.dst_module_id = dst_mcfg->id.module_id;
        msg.dst_instance_id = dst_mcfg->id.instance_id;
        msg.bind = false;

        ret = skl_ipc_bind_unbind(&ctx->ipc, &msg);
        if (!ret) {
                /* free queue only if unbind is success */
                skl_free_queue(src_mcfg->m_out_pin, src_index);
                skl_free_queue(dst_mcfg->m_in_pin, dst_index);

                /*
                 * check only if src module bind state, bind is
                 * always from src -> sink
                 */
                skl_clear_module_state(src_mcfg->m_out_pin, out_max, src_mcfg);
        }

        return ret;
}

/*
 * Once a module is instantiated it need to be 'bind' with other modules in
 * the pipeline. For binding we need to find the module pins which are bind
 * together
 * This function finds the pins and then sends bund_unbind IPC message to
 * DSP using IPC helper
 */
int skl_bind_modules(struct skl_sst *ctx,
                        struct skl_module_cfg *src_mcfg,
                        struct skl_module_cfg *dst_mcfg)
{
        int ret;
        struct skl_ipc_bind_unbind_msg msg;
        int in_max = dst_mcfg->max_in_queue;
        int out_max = src_mcfg->max_out_queue;
        int src_index, dst_index;

        skl_dump_bind_info(ctx, src_mcfg, dst_mcfg);

        if (src_mcfg->m_state < SKL_MODULE_INIT_DONE ||
                dst_mcfg->m_state < SKL_MODULE_INIT_DONE)
                return 0;

        src_index = skl_alloc_queue(src_mcfg->m_out_pin, dst_mcfg, out_max);
        if (src_index < 0)
                return -EINVAL;

        msg.src_queue = src_index;
        dst_index = skl_alloc_queue(dst_mcfg->m_in_pin, src_mcfg, in_max);
        if (dst_index < 0) {
                skl_free_queue(src_mcfg->m_out_pin, src_index);
                return -EINVAL;
        }

        msg.dst_queue = dst_index;

        dev_dbg(ctx->dev, "src queue = %d dst queue =%d\n",
                         msg.src_queue, msg.dst_queue);

        msg.module_id = src_mcfg->id.module_id;
        msg.instance_id = src_mcfg->id.instance_id;
        msg.dst_module_id = dst_mcfg->id.module_id;
        msg.dst_instance_id = dst_mcfg->id.instance_id;
        msg.bind = true;

        ret = skl_ipc_bind_unbind(&ctx->ipc, &msg);

        if (!ret) {
                src_mcfg->m_state = SKL_MODULE_BIND_DONE;
                src_mcfg->m_out_pin[src_index].pin_state = SKL_PIN_BIND_DONE;
                dst_mcfg->m_in_pin[dst_index].pin_state = SKL_PIN_BIND_DONE;
        } else {
                /* error case , if IPC fails, clear the queue index */
                skl_free_queue(src_mcfg->m_out_pin, src_index);
                skl_free_queue(dst_mcfg->m_in_pin, dst_index);
        }

        return ret;
}

static int skl_set_pipe_state(struct skl_sst *ctx, struct skl_pipe *pipe,
        enum skl_ipc_pipeline_state state)
{
        dev_dbg(ctx->dev, "%s: pipe_satate = %d\n", __func__, state);

        return skl_ipc_set_pipeline_state(&ctx->ipc, pipe->ppl_id, state);
}

/*
 * A pipeline is a collection of modules. Before a module in instantiated a
 * pipeline needs to be created for it.
 * This function creates pipeline, by sending create pipeline IPC messages
 * to FW
 */
int skl_create_pipeline(struct skl_sst *ctx, struct skl_pipe *pipe)
{
        int ret;

        dev_dbg(ctx->dev, "%s: pipe_id = %d\n", __func__, pipe->ppl_id);

        ret = skl_ipc_create_pipeline(&ctx->ipc, pipe->memory_pages,
                                pipe->pipe_priority, pipe->ppl_id);
        if (ret < 0) {
                dev_err(ctx->dev, "Failed to create pipeline\n");
                return ret;
        }

        pipe->state = SKL_PIPE_CREATED;

        return 0;
}

/*
 * A pipeline needs to be deleted on cleanup. If a pipeline is running, then
 * pause the pipeline first and then delete it
 * The pipe delete is done by sending delete pipeline IPC. DSP will stop the
 * DMA engines and releases resources
 */
int skl_delete_pipe(struct skl_sst *ctx, struct skl_pipe *pipe)
{
        int ret;

        dev_dbg(ctx->dev, "%s: pipe = %d\n", __func__, pipe->ppl_id);

        /* If pipe is not started, do not try to stop the pipe in FW. */
        if (pipe->state > SKL_PIPE_STARTED) {
                ret = skl_set_pipe_state(ctx, pipe, PPL_PAUSED);
                if (ret < 0) {
                        dev_err(ctx->dev, "Failed to stop pipeline\n");
                        return ret;
                }

                pipe->state = SKL_PIPE_PAUSED;
        } else {
                /* If pipe was not created in FW, do not try to delete it */
                if (pipe->state < SKL_PIPE_CREATED)
                        return 0;

                ret = skl_ipc_delete_pipeline(&ctx->ipc, pipe->ppl_id);
                if (ret < 0)
                        dev_err(ctx->dev, "Failed to delete pipeline\n");

                pipe->state = SKL_PIPE_INVALID;
        }

        return ret;
}

/*
 * A pipeline is also a scheduling entity in DSP which can be run, stopped
 * For processing data the pipe need to be run by sending IPC set pipe state
 * to DSP
 */
int skl_run_pipe(struct skl_sst *ctx, struct skl_pipe *pipe)
{
        int ret;

        dev_dbg(ctx->dev, "%s: pipe = %d\n", __func__, pipe->ppl_id);

        /* If pipe was not created in FW, do not try to pause or delete */
        if (pipe->state < SKL_PIPE_CREATED)
                return 0;

        /* Pipe has to be paused before it is started */
        ret = skl_set_pipe_state(ctx, pipe, PPL_PAUSED);
        if (ret < 0) {
                dev_err(ctx->dev, "Failed to pause pipe\n");
                return ret;
        }

        pipe->state = SKL_PIPE_PAUSED;

        ret = skl_set_pipe_state(ctx, pipe, PPL_RUNNING);
        if (ret < 0) {
                dev_err(ctx->dev, "Failed to start pipe\n");
                return ret;
        }

        pipe->state = SKL_PIPE_STARTED;

        return 0;
}

/*
 * Stop the pipeline by sending set pipe state IPC
 * DSP doesnt implement stop so we always send pause message
 */
int skl_stop_pipe(struct skl_sst *ctx, struct skl_pipe *pipe)
{
        int ret;

        dev_dbg(ctx->dev, "In %s pipe=%d\n", __func__, pipe->ppl_id);

        /* If pipe was not created in FW, do not try to pause or delete */
        if (pipe->state < SKL_PIPE_PAUSED)
                return 0;

        ret = skl_set_pipe_state(ctx, pipe, PPL_PAUSED);
        if (ret < 0) {
                dev_dbg(ctx->dev, "Failed to stop pipe\n");
                return ret;
        }

        pipe->state = SKL_PIPE_CREATED;

        return 0;
}

/* Algo parameter set helper function */
int skl_set_module_params(struct skl_sst *ctx, u32 *params, int size,
                                u32 param_id, struct skl_module_cfg *mcfg)
{
        struct skl_ipc_large_config_msg msg;

        msg.module_id = mcfg->id.module_id;
        msg.instance_id = mcfg->id.instance_id;
        msg.param_data_size = size;
        msg.large_param_id = param_id;

        return skl_ipc_set_large_config(&ctx->ipc, &msg, params);
}

int skl_get_module_params(struct skl_sst *ctx, u32 *params, int size,
                          u32 param_id, struct skl_module_cfg *mcfg)
{
        struct skl_ipc_large_config_msg msg;

        msg.module_id = mcfg->id.module_id;
        msg.instance_id = mcfg->id.instance_id;
        msg.param_data_size = size;
        msg.large_param_id = param_id;

        return skl_ipc_get_large_config(&ctx->ipc, &msg, params);
}