// SPDX-License-Identifier: GPL-2.0-only
//
// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
// CX2072X codec
//

#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/jack.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../../codecs/cx2072x.h"
#include "../atom/sst-atom-controls.h"

static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
        SND_SOC_DAPM_HP("Headphone", NULL),
        SND_SOC_DAPM_MIC("Headset Mic", NULL),
        SND_SOC_DAPM_MIC("Int Mic", NULL),
        SND_SOC_DAPM_SPK("Ext Spk", NULL),
};

static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
        /* External Speakers: HFL, HFR */
        {"Headphone", NULL, "PORTA"},
        {"Ext Spk", NULL, "PORTG"},
        {"PORTC", NULL, "Int Mic"},
        {"PORTD", NULL, "Headset Mic"},

        {"Playback", NULL, "ssp2 Tx"},
        {"ssp2 Tx", NULL, "codec_out0"},
        {"ssp2 Tx", NULL, "codec_out1"},
        {"codec_in0", NULL, "ssp2 Rx"},
        {"codec_in1", NULL, "ssp2 Rx"},
        {"ssp2 Rx", NULL, "Capture"},
};

static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
        SOC_DAPM_PIN_SWITCH("Headphone"),
        SOC_DAPM_PIN_SWITCH("Headset Mic"),
        SOC_DAPM_PIN_SWITCH("Int Mic"),
        SOC_DAPM_PIN_SWITCH("Ext Spk"),
};

static struct snd_soc_jack byt_cht_cx2072x_headset;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
        {
                .pin = "Headset Mic",
                .mask = SND_JACK_MICROPHONE,
        },
        {
                .pin = "Headphone",
                .mask = SND_JACK_HEADPHONE,
        },
};

static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
        { "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
        {},
};

static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
{
        struct snd_soc_card *card = rtd->card;
        struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
        struct snd_soc_component *codec = snd_soc_rtd_to_codec(rtd, 0)->component;
        int ret;

        if (devm_acpi_dev_add_driver_gpios(codec->dev,
                                           byt_cht_cx2072x_acpi_gpios))
                dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");

        snd_soc_dapm_set_idle_bias(dapm, false);

        /* set the default PLL rate, the clock is handled by the codec driver */
        ret = snd_soc_dai_set_sysclk(snd_soc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
                                     19200000, SND_SOC_CLOCK_IN);
        if (ret) {
                dev_err(rtd->dev, "Could not set sysclk\n");
                return ret;
        }

        ret = snd_soc_card_jack_new_pins(card, "Headset",
                                         SND_JACK_HEADSET | SND_JACK_BTN_0,
                                         &byt_cht_cx2072x_headset,
                                         byt_cht_cx2072x_headset_pins,
                                         ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
        if (ret)
                return ret;

        snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);

        snd_soc_dai_set_bclk_ratio(snd_soc_rtd_to_codec(rtd, 0), 50);

        return 0;
}

static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
                                 struct snd_pcm_hw_params *params)
{
        struct snd_interval *rate =
                hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
        struct snd_interval *channels =
                hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
        int ret;

        /* The DSP will convert the FE rate to 48k, stereo, 24bits */
        rate->min = rate->max = 48000;
        channels->min = channels->max = 2;

        /* set SSP2 to 24-bit */
        params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);

        /*
         * Default mode for SSP configuration is TDM 4 slot, override config
         * with explicit setting to I2S 2ch 24-bit. The word length is set with
         * dai_set_tdm_slot() since there is no other API exposed
         */
        ret = snd_soc_dai_set_fmt(snd_soc_rtd_to_cpu(rtd, 0),
                                SND_SOC_DAIFMT_I2S     |
                                SND_SOC_DAIFMT_NB_NF   |
                                SND_SOC_DAIFMT_BP_FP);
        if (ret < 0) {
                dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
                return ret;
        }

        ret = snd_soc_dai_set_tdm_slot(snd_soc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
        if (ret < 0) {
                dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
                return ret;
        }

        return 0;
}

static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
{
        return snd_pcm_hw_constraint_single(substream->runtime,
                                            SNDRV_PCM_HW_PARAM_RATE, 48000);
}

static const struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
        .startup = byt_cht_cx2072x_aif1_startup,
};

SND_SOC_DAILINK_DEF(dummy,
        DAILINK_COMP_ARRAY(COMP_DUMMY()));

SND_SOC_DAILINK_DEF(media,
        DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));

SND_SOC_DAILINK_DEF(deepbuffer,
        DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));

SND_SOC_DAILINK_DEF(ssp2,
        DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));

SND_SOC_DAILINK_DEF(cx2072x,
        DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));

SND_SOC_DAILINK_DEF(platform,
        DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));

static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
        [MERR_DPCM_AUDIO] = {
                .name = "Audio Port",
                .stream_name = "Audio",
                .nonatomic = true,
                .dynamic = 1,
                .ops = &byt_cht_cx2072x_aif1_ops,
                SND_SOC_DAILINK_REG(media, dummy, platform),
        },
        [MERR_DPCM_DEEP_BUFFER] = {
                .name = "Deep-Buffer Audio Port",
                .stream_name = "Deep-Buffer Audio",
                .nonatomic = true,
                .dynamic = 1,
                .playback_only = 1,
                .ops = &byt_cht_cx2072x_aif1_ops,
                SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
        },
        /* back ends */
        {
                .name = "SSP2-Codec",
                .id = 0,
                .no_pcm = 1,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
                                              | SND_SOC_DAIFMT_CBC_CFC,
                .init = byt_cht_cx2072x_init,
                .be_hw_params_fixup = byt_cht_cx2072x_fixup,
                SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
        },
};

/* use space before codec name to simplify card ID, and simplify driver name */
#define SOF_CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
#define SOF_DRIVER_NAME "SOF"

#define CARD_NAME "bytcht-cx2072x"
#define DRIVER_NAME NULL /* card name will be used for driver name */

/* SoC card */
static struct snd_soc_card byt_cht_cx2072x_card = {
        .name = CARD_NAME,
        .driver_name = DRIVER_NAME,
        .owner = THIS_MODULE,
        .dai_link = byt_cht_cx2072x_dais,
        .num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
        .dapm_widgets = byt_cht_cx2072x_widgets,
        .num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
        .dapm_routes = byt_cht_cx2072x_audio_map,
        .num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
        .controls = byt_cht_cx2072x_controls,
        .num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
};

static char codec_name[SND_ACPI_I2C_ID_LEN];

static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
{
        struct snd_soc_acpi_mach *mach;
        struct acpi_device *adev;
        int dai_index = 0;
        bool sof_parent;
        int i, ret;

        byt_cht_cx2072x_card.dev = &pdev->dev;
        mach = dev_get_platdata(&pdev->dev);

        /* fix index of codec dai */
        for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
                if (byt_cht_cx2072x_dais[i].num_codecs &&
                    !strcmp(byt_cht_cx2072x_dais[i].codecs->name,
                            "i2c-14F10720:00")) {
                        dai_index = i;
                        break;
                }
        }

        /* fixup codec name based on HID */
        adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
        if (adev) {
                snprintf(codec_name, sizeof(codec_name), "i2c-%s",
                         acpi_dev_name(adev));
                byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
        } else {
                dev_err(&pdev->dev, "Error cannot find '%s' dev\n", mach->id);
                return -ENOENT;
        }

        acpi_dev_put(adev);

        /* override platform name, if required */
        ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
                                                    mach->mach_params.platform);
        if (ret)
                return ret;

        sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);

        /* set card and driver name */
        if (sof_parent) {
                byt_cht_cx2072x_card.name = SOF_CARD_NAME;
                byt_cht_cx2072x_card.driver_name = SOF_DRIVER_NAME;
        } else {
                byt_cht_cx2072x_card.name = CARD_NAME;
                byt_cht_cx2072x_card.driver_name = DRIVER_NAME;
        }

        /* set pm ops */
        if (sof_parent)
                pdev->dev.driver->pm = &snd_soc_pm_ops;

        return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
}

static struct platform_driver snd_byt_cht_cx2072x_driver = {
        .driver = {
                .name = "bytcht_cx2072x",
        },
        .probe = snd_byt_cht_cx2072x_probe,
};
module_platform_driver(snd_byt_cht_cx2072x_driver);

MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytcht_cx2072x");