// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2021-2022 Intel Corporation
//
// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
//

#include <linux/device.h>
#include <linux/module.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../utils.h"

SND_SOC_DAILINK_DEF(dmic_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC Pin")));
SND_SOC_DAILINK_DEF(dmic_wov_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC WoV Pin")));

static const struct snd_soc_dapm_widget card_widgets[] = {
        SND_SOC_DAPM_MIC("SoC DMIC", NULL),
};

static const struct snd_soc_dapm_route card_routes[] = {
        {"DMic", NULL, "SoC DMIC"},
};

static int avs_create_dai_links(struct device *dev, const char *codec_name,
                                struct snd_soc_dai_link **links, int *num_links)
{
        struct snd_soc_dai_link_component *platform;
        struct snd_soc_dai_link *dl;
        const int num_dl = 2;

        dl = devm_kcalloc(dev, num_dl, sizeof(*dl), GFP_KERNEL);
        platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
        if (!dl || !platform)
                return -ENOMEM;

        dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
        if (!dl->codecs)
                return -ENOMEM;

        dl->codecs->name = devm_kstrdup(dev, codec_name, GFP_KERNEL);
        dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "dmic-hifi");
        if (!dl->codecs->name || !dl->codecs->dai_name)
                return -ENOMEM;

        platform->name = dev_name(dev);
        dl[0].num_cpus = 1;
        dl[0].num_codecs = 1;
        dl[0].platforms = platform;
        dl[0].num_platforms = 1;
        dl[0].nonatomic = 1;
        dl[0].no_pcm = 1;
        dl[0].capture_only = 1;
        memcpy(&dl[1], &dl[0], sizeof(*dl));

        dl[0].name = "DMIC";
        dl[0].cpus = dmic_pin;
        dl[0].id = 0;
        dl[1].name = "DMIC WoV";
        dl[1].cpus = dmic_wov_pin;
        dl[1].id = 1;
        dl[1].ignore_suspend = 1;

        *links = dl;
        *num_links = num_dl;
        return 0;
}

static int avs_dmic_probe(struct platform_device *pdev)
{
        struct device *dev = &pdev->dev;
        struct snd_soc_acpi_mach *mach;
        struct avs_mach_pdata *pdata;
        struct snd_soc_card *card;
        int ret;

        mach = dev_get_platdata(dev);
        pdata = mach->pdata;

        card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
        if (!card)
                return -ENOMEM;

        ret = avs_create_dai_links(dev, pdata->codec_name, &card->dai_link, &card->num_links);
        if (ret)
                return ret;

        if (pdata->obsolete_card_names) {
                card->name = "avs_dmic";
        } else {
                card->driver_name = "avs_dmic";
                card->long_name = card->name = "AVS DMIC";
        }
        card->dev = dev;
        card->owner = THIS_MODULE;
        card->dapm_widgets = card_widgets;
        card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
        card->dapm_routes = card_routes;
        card->num_dapm_routes = ARRAY_SIZE(card_routes);
        card->fully_routed = true;

        return devm_snd_soc_register_deferrable_card(dev, card);
}

static const struct platform_device_id avs_dmic_driver_ids[] = {
        {
                .name = "avs_dmic",
        },
        {},
};
MODULE_DEVICE_TABLE(platform, avs_dmic_driver_ids);

static struct platform_driver avs_dmic_driver = {
        .probe = avs_dmic_probe,
        .driver = {
                .name = "avs_dmic",
                .pm = &snd_soc_pm_ops,
        },
        .id_table = avs_dmic_driver_ids,
};

module_platform_driver(avs_dmic_driver);

MODULE_DESCRIPTION("Intel DMIC machine driver");
MODULE_LICENSE("GPL");