root/sound/soc/mediatek/mt8173/mt8173-max98090.c
// SPDX-License-Identifier: GPL-2.0
/*
 * mt8173-max98090.c  --  MT8173 MAX98090 ALSA SoC machine driver
 *
 * Copyright (c) 2015 MediaTek Inc.
 * Author: Koro Chen <koro.chen@mediatek.com>
 */

#include <linux/module.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "../../codecs/max98090.h"

static struct snd_soc_jack mt8173_max98090_jack;

static struct snd_soc_jack_pin mt8173_max98090_jack_pins[] = {
        {
                .pin    = "Headphone",
                .mask   = SND_JACK_HEADPHONE,
        },
        {
                .pin    = "Headset Mic",
                .mask   = SND_JACK_MICROPHONE,
        },
};

static const struct snd_soc_dapm_widget mt8173_max98090_widgets[] = {
        SND_SOC_DAPM_SPK("Speaker", NULL),
        SND_SOC_DAPM_MIC("Int Mic", NULL),
        SND_SOC_DAPM_HP("Headphone", NULL),
        SND_SOC_DAPM_MIC("Headset Mic", NULL),
};

static const struct snd_soc_dapm_route mt8173_max98090_routes[] = {
        {"Speaker", NULL, "SPKL"},
        {"Speaker", NULL, "SPKR"},
        {"DMICL", NULL, "Int Mic"},
        {"Headphone", NULL, "HPL"},
        {"Headphone", NULL, "HPR"},
        {"Headset Mic", NULL, "MICBIAS"},
        {"IN34", NULL, "Headset Mic"},
};

static const struct snd_kcontrol_new mt8173_max98090_controls[] = {
        SOC_DAPM_PIN_SWITCH("Speaker"),
        SOC_DAPM_PIN_SWITCH("Int Mic"),
        SOC_DAPM_PIN_SWITCH("Headphone"),
        SOC_DAPM_PIN_SWITCH("Headset Mic"),
};

static int mt8173_max98090_hw_params(struct snd_pcm_substream *substream,
                                     struct snd_pcm_hw_params *params)
{
        struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
        struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);

        return snd_soc_dai_set_sysclk(codec_dai, 0, params_rate(params) * 256,
                                      SND_SOC_CLOCK_IN);
}

static const struct snd_soc_ops mt8173_max98090_ops = {
        .hw_params = mt8173_max98090_hw_params,
};

static int mt8173_max98090_init(struct snd_soc_pcm_runtime *runtime)
{
        int ret;
        struct snd_soc_card *card = runtime->card;
        struct snd_soc_component *component = snd_soc_rtd_to_codec(runtime, 0)->component;

        /* enable jack detection */
        ret = snd_soc_card_jack_new_pins(card, "Headphone", SND_JACK_HEADSET,
                                         &mt8173_max98090_jack,
                                         mt8173_max98090_jack_pins,
                                         ARRAY_SIZE(mt8173_max98090_jack_pins));
        if (ret) {
                dev_err(card->dev, "Can't create a new Jack %d\n", ret);
                return ret;
        }

        return max98090_mic_detect(component, &mt8173_max98090_jack);
}

SND_SOC_DAILINK_DEFS(playback,
        DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
        DAILINK_COMP_ARRAY(COMP_DUMMY()),
        DAILINK_COMP_ARRAY(COMP_EMPTY()));

SND_SOC_DAILINK_DEFS(capture,
        DAILINK_COMP_ARRAY(COMP_CPU("VUL")),
        DAILINK_COMP_ARRAY(COMP_DUMMY()),
        DAILINK_COMP_ARRAY(COMP_EMPTY()));

SND_SOC_DAILINK_DEFS(hifi,
        DAILINK_COMP_ARRAY(COMP_CPU("I2S")),
        DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "HiFi")),
        DAILINK_COMP_ARRAY(COMP_EMPTY()));

/* Digital audio interface glue - connects codec <---> CPU */
static struct snd_soc_dai_link mt8173_max98090_dais[] = {
        /* Front End DAI links */
        {
                .name = "MAX98090 Playback",
                .stream_name = "MAX98090 Playback",
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                .dynamic = 1,
                .playback_only = 1,
                SND_SOC_DAILINK_REG(playback),
        },
        {
                .name = "MAX98090 Capture",
                .stream_name = "MAX98090 Capture",
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                .dynamic = 1,
                .capture_only = 1,
                SND_SOC_DAILINK_REG(capture),
        },
        /* Back End DAI links */
        {
                .name = "Codec",
                .no_pcm = 1,
                .init = mt8173_max98090_init,
                .ops = &mt8173_max98090_ops,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
                           SND_SOC_DAIFMT_CBC_CFC,
                SND_SOC_DAILINK_REG(hifi),
        },
};

static struct snd_soc_card mt8173_max98090_card = {
        .name = "mt8173-max98090",
        .owner = THIS_MODULE,
        .dai_link = mt8173_max98090_dais,
        .num_links = ARRAY_SIZE(mt8173_max98090_dais),
        .controls = mt8173_max98090_controls,
        .num_controls = ARRAY_SIZE(mt8173_max98090_controls),
        .dapm_widgets = mt8173_max98090_widgets,
        .num_dapm_widgets = ARRAY_SIZE(mt8173_max98090_widgets),
        .dapm_routes = mt8173_max98090_routes,
        .num_dapm_routes = ARRAY_SIZE(mt8173_max98090_routes),
};

static int mt8173_max98090_dev_probe(struct platform_device *pdev)
{
        struct snd_soc_card *card = &mt8173_max98090_card;
        struct device_node *codec_node, *platform_node;
        struct snd_soc_dai_link *dai_link;
        int ret, i;

        platform_node = of_parse_phandle(pdev->dev.of_node,
                                         "mediatek,platform", 0);
        if (!platform_node) {
                dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
                return -EINVAL;
        }
        for_each_card_prelinks(card, i, dai_link) {
                if (dai_link->platforms->name)
                        continue;
                dai_link->platforms->of_node = platform_node;
        }

        codec_node = of_parse_phandle(pdev->dev.of_node,
                                      "mediatek,audio-codec", 0);
        if (!codec_node) {
                dev_err(&pdev->dev,
                        "Property 'audio-codec' missing or invalid\n");
                ret = -EINVAL;
                goto put_platform_node;
        }
        for_each_card_prelinks(card, i, dai_link) {
                if (dai_link->codecs->name)
                        continue;
                dai_link->codecs->of_node = codec_node;
        }
        card->dev = &pdev->dev;

        ret = devm_snd_soc_register_card(&pdev->dev, card);

        of_node_put(codec_node);

put_platform_node:
        of_node_put(platform_node);
        return ret;
}

static const struct of_device_id mt8173_max98090_dt_match[] = {
        { .compatible = "mediatek,mt8173-max98090", },
        { }
};
MODULE_DEVICE_TABLE(of, mt8173_max98090_dt_match);

static struct platform_driver mt8173_max98090_driver = {
        .driver = {
                   .name = "mt8173-max98090",
                   .of_match_table = mt8173_max98090_dt_match,
                   .pm = &snd_soc_pm_ops,
        },
        .probe = mt8173_max98090_dev_probe,
};

module_platform_driver(mt8173_max98090_driver);

/* Module information */
MODULE_DESCRIPTION("MT8173 MAX98090 ALSA SoC machine driver");
MODULE_AUTHOR("Koro Chen <koro.chen@mediatek.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:mt8173-max98090");