// SPDX-License-Identifier: GPL-2.0-only
/*
 *  bytcht_es8316.c - ASoc Machine driver for Intel Baytrail/Cherrytrail
 *                    platforms with Everest ES8316 SoC
 *
 *  Copyright (C) 2017 Endless Mobile, Inc.
 *  Authors: David Yang <yangxiaohua@everest-semi.com>,
 *           Daniel Drake <drake@endlessm.com>
 *
 *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/dmi.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../atom/sst-atom-controls.h"
#include "../common/soc-intel-quirks.h"

/* jd-inv + terminating entry */
#define MAX_NO_PROPS 2

struct byt_cht_es8316_private {
        struct clk *mclk;
        struct snd_soc_jack jack;
        struct gpio_desc *speaker_en_gpio;
        bool speaker_en;
};

enum {
        BYT_CHT_ES8316_INTMIC_IN1_MAP,
        BYT_CHT_ES8316_INTMIC_IN2_MAP,
};

#define BYT_CHT_ES8316_MAP(quirk)               ((quirk) & GENMASK(3, 0))
#define BYT_CHT_ES8316_SSP0                     BIT(16)
#define BYT_CHT_ES8316_MONO_SPEAKER             BIT(17)
#define BYT_CHT_ES8316_JD_INVERTED              BIT(18)

static unsigned long quirk;

static int quirk_override = -1;
module_param_named(quirk, quirk_override, int, 0444);
MODULE_PARM_DESC(quirk, "Board-specific quirk override");

static void log_quirks(struct device *dev)
{
        if (BYT_CHT_ES8316_MAP(quirk) == BYT_CHT_ES8316_INTMIC_IN1_MAP)
                dev_info(dev, "quirk IN1_MAP enabled");
        if (BYT_CHT_ES8316_MAP(quirk) == BYT_CHT_ES8316_INTMIC_IN2_MAP)
                dev_info(dev, "quirk IN2_MAP enabled");
        if (quirk & BYT_CHT_ES8316_SSP0)
                dev_info(dev, "quirk SSP0 enabled");
        if (quirk & BYT_CHT_ES8316_MONO_SPEAKER)
                dev_info(dev, "quirk MONO_SPEAKER enabled\n");
        if (quirk & BYT_CHT_ES8316_JD_INVERTED)
                dev_info(dev, "quirk JD_INVERTED enabled\n");
}

static int byt_cht_es8316_speaker_power_event(struct snd_soc_dapm_widget *w,
        struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_card *card = w->dapm->card;
        struct byt_cht_es8316_private *priv = snd_soc_card_get_drvdata(card);

        if (SND_SOC_DAPM_EVENT_ON(event))
                priv->speaker_en = true;
        else
                priv->speaker_en = false;

        gpiod_set_value_cansleep(priv->speaker_en_gpio, priv->speaker_en);

        return 0;
}

static const struct snd_soc_dapm_widget byt_cht_es8316_widgets[] = {
        SND_SOC_DAPM_SPK("Speaker", NULL),
        SND_SOC_DAPM_HP("Headphone", NULL),
        SND_SOC_DAPM_MIC("Headset Mic", NULL),
        SND_SOC_DAPM_MIC("Internal Mic", NULL),

        SND_SOC_DAPM_SUPPLY("Speaker Power", SND_SOC_NOPM, 0, 0,
                            byt_cht_es8316_speaker_power_event,
                            SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
};

static const struct snd_soc_dapm_route byt_cht_es8316_audio_map[] = {
        {"Headphone", NULL, "HPOL"},
        {"Headphone", NULL, "HPOR"},

        /*
         * There is no separate speaker output instead the speakers are muxed to
         * the HP outputs. The mux is controlled by the "Speaker Power" supply.
         */
        {"Speaker", NULL, "HPOL"},
        {"Speaker", NULL, "HPOR"},
        {"Speaker", NULL, "Speaker Power"},
};

static const struct snd_soc_dapm_route byt_cht_es8316_intmic_in1_map[] = {
        {"MIC1", NULL, "Internal Mic"},
        {"MIC2", NULL, "Headset Mic"},
};

static const struct snd_soc_dapm_route byt_cht_es8316_intmic_in2_map[] = {
        {"MIC2", NULL, "Internal Mic"},
        {"MIC1", NULL, "Headset Mic"},
};

static const struct snd_soc_dapm_route byt_cht_es8316_ssp0_map[] = {
        {"Playback", NULL, "ssp0 Tx"},
        {"ssp0 Tx", NULL, "modem_out"},
        {"modem_in", NULL, "ssp0 Rx"},
        {"ssp0 Rx", NULL, "Capture"},
};

static const struct snd_soc_dapm_route byt_cht_es8316_ssp2_map[] = {
        {"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_es8316_controls[] = {
        SOC_DAPM_PIN_SWITCH("Speaker"),
        SOC_DAPM_PIN_SWITCH("Headphone"),
        SOC_DAPM_PIN_SWITCH("Headset Mic"),
        SOC_DAPM_PIN_SWITCH("Internal Mic"),
};

static struct snd_soc_jack_pin byt_cht_es8316_jack_pins[] = {
        {
                .pin    = "Headphone",
                .mask   = SND_JACK_HEADPHONE,
        },
        {
                .pin    = "Headset Mic",
                .mask   = SND_JACK_MICROPHONE,
        },
};

static int byt_cht_es8316_init(struct snd_soc_pcm_runtime *runtime)
{
        struct snd_soc_component *codec = asoc_rtd_to_codec(runtime, 0)->component;
        struct snd_soc_card *card = runtime->card;
        struct byt_cht_es8316_private *priv = snd_soc_card_get_drvdata(card);
        const struct snd_soc_dapm_route *custom_map;
        int num_routes;
        int ret;

        card->dapm.idle_bias_off = true;

        switch (BYT_CHT_ES8316_MAP(quirk)) {
        case BYT_CHT_ES8316_INTMIC_IN1_MAP:
        default:
                custom_map = byt_cht_es8316_intmic_in1_map;
                num_routes = ARRAY_SIZE(byt_cht_es8316_intmic_in1_map);
                break;
        case BYT_CHT_ES8316_INTMIC_IN2_MAP:
                custom_map = byt_cht_es8316_intmic_in2_map;
                num_routes = ARRAY_SIZE(byt_cht_es8316_intmic_in2_map);
                break;
        }
        ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes);
        if (ret)
                return ret;

        if (quirk & BYT_CHT_ES8316_SSP0) {
                custom_map = byt_cht_es8316_ssp0_map;
                num_routes = ARRAY_SIZE(byt_cht_es8316_ssp0_map);
        } else {
                custom_map = byt_cht_es8316_ssp2_map;
                num_routes = ARRAY_SIZE(byt_cht_es8316_ssp2_map);
        }
        ret = snd_soc_dapm_add_routes(&card->dapm, custom_map, num_routes);
        if (ret)
                return ret;

        /*
         * The firmware might enable the clock at boot (this information
         * may or may not be reflected in the enable clock register).
         * To change the rate we must disable the clock first to cover these
         * cases. Due to common clock framework restrictions that do not allow
         * to disable a clock that has not been enabled, we need to enable
         * the clock first.
         */
        ret = clk_prepare_enable(priv->mclk);
        if (!ret)
                clk_disable_unprepare(priv->mclk);

        ret = clk_set_rate(priv->mclk, 19200000);
        if (ret)
                dev_err(card->dev, "unable to set MCLK rate\n");

        ret = clk_prepare_enable(priv->mclk);
        if (ret)
                dev_err(card->dev, "unable to enable MCLK\n");

        ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(runtime, 0), 0, 19200000,
                                     SND_SOC_CLOCK_IN);
        if (ret < 0) {
                dev_err(card->dev, "can't set codec clock %d\n", ret);
                return ret;
        }

        ret = snd_soc_card_jack_new(card, "Headset",
                                    SND_JACK_HEADSET | SND_JACK_BTN_0,
                                    &priv->jack, byt_cht_es8316_jack_pins,
                                    ARRAY_SIZE(byt_cht_es8316_jack_pins));
        if (ret) {
                dev_err(card->dev, "jack creation failed %d\n", ret);
                return ret;
        }

        snd_jack_set_key(priv->jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
        snd_soc_component_set_jack(codec, &priv->jack, NULL);

        return 0;
}

static int byt_cht_es8316_codec_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, bits;

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

        if (quirk & BYT_CHT_ES8316_SSP0) {
                /* set SSP0 to 16-bit */
                params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);
                bits = 16;
        } else {
                /* set SSP2 to 24-bit */
                params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
                bits = 24;
        }

        /*
         * 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(asoc_rtd_to_cpu(rtd, 0),
                                SND_SOC_DAIFMT_I2S     |
                                SND_SOC_DAIFMT_NB_NF   |
                                SND_SOC_DAIFMT_CBS_CFS
                );
        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(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, bits);
        if (ret < 0) {
                dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
                return ret;
        }

        return 0;
}

static int byt_cht_es8316_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_es8316_aif1_ops = {
        .startup = byt_cht_es8316_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_port,
        DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
SND_SOC_DAILINK_DEF(ssp2_codec,
        DAILINK_COMP_ARRAY(COMP_CODEC("i2c-ESSX8316:00", "ES8316 HiFi")));

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

static struct snd_soc_dai_link byt_cht_es8316_dais[] = {
        [MERR_DPCM_AUDIO] = {
                .name = "Audio Port",
                .stream_name = "Audio",
                .nonatomic = true,
                .dynamic = 1,
                .dpcm_playback = 1,
                .dpcm_capture = 1,
                .ops = &byt_cht_es8316_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,
                .dpcm_playback = 1,
                .ops = &byt_cht_es8316_aif1_ops,
                SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
        },

                /* back ends */
        {
                /* Only SSP2 has been tested here, so BYT-CR platforms that
                 * require SSP0 will not work.
                 */
                .name = "SSP2-Codec",
                .id = 0,
                .no_pcm = 1,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
                                                | SND_SOC_DAIFMT_CBS_CFS,
                .be_hw_params_fixup = byt_cht_es8316_codec_fixup,
                .nonatomic = true,
                .dpcm_playback = 1,
                .dpcm_capture = 1,
                .init = byt_cht_es8316_init,
                SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
        },
};


/* SoC card */
static char codec_name[SND_ACPI_I2C_ID_LEN];
#if !IS_ENABLED(CONFIG_SND_SOC_INTEL_USER_FRIENDLY_LONG_NAMES)
static char long_name[50]; /* = "bytcht-es8316-*-spk-*-mic" */
#endif
static char components_string[32]; /* = "cfg-spk:* cfg-mic:* */

static int byt_cht_es8316_suspend(struct snd_soc_card *card)
{
        struct snd_soc_component *component;

        for_each_card_components(card, component) {
                if (!strcmp(component->name, codec_name)) {
                        dev_dbg(component->dev, "disabling jack detect before suspend\n");
                        snd_soc_component_set_jack(component, NULL, NULL);
                        break;
                }
        }

        return 0;
}

static int byt_cht_es8316_resume(struct snd_soc_card *card)
{
        struct byt_cht_es8316_private *priv = snd_soc_card_get_drvdata(card);
        struct snd_soc_component *component;

        for_each_card_components(card, component) {
                if (!strcmp(component->name, codec_name)) {
                        dev_dbg(component->dev, "re-enabling jack detect after resume\n");
                        snd_soc_component_set_jack(component, &priv->jack, NULL);
                        break;
                }
        }

        /*
         * Some Cherry Trail boards with an ES8316 codec have a bug in their
         * ACPI tables where the MSSL1680 touchscreen's _PS0 and _PS3 methods
         * wrongly also set the speaker-enable GPIO to 1/0. Testing has shown
         * that this really is a bug and the GPIO has no influence on the
         * touchscreen at all.
         *
         * The silead.c touchscreen driver does not support runtime suspend, so
         * the GPIO can only be changed underneath us during a system suspend.
         * This resume() function runs from a pm complete() callback, and thus
         * is guaranteed to run after the touchscreen driver/ACPI-subsys has
         * brought the touchscreen back up again (and thus changed the GPIO).
         *
         * So to work around this we pass GPIOD_FLAGS_BIT_NONEXCLUSIVE when
         * requesting the GPIO and we set its value here to undo any changes
         * done by the touchscreen's broken _PS0 ACPI method.
         */
        gpiod_set_value_cansleep(priv->speaker_en_gpio, priv->speaker_en);

        return 0;
}

/* use space before codec name to simplify card ID, and simplify driver name */
#define SOF_CARD_NAME "bytcht es8316" /* card name will be 'sof-bytcht es8316' */
#define SOF_DRIVER_NAME "SOF"

#define CARD_NAME "bytcht-es8316"
#define DRIVER_NAME NULL /* card name will be used for driver name */

static struct snd_soc_card byt_cht_es8316_card = {
        .owner = THIS_MODULE,
        .dai_link = byt_cht_es8316_dais,
        .num_links = ARRAY_SIZE(byt_cht_es8316_dais),
        .dapm_widgets = byt_cht_es8316_widgets,
        .num_dapm_widgets = ARRAY_SIZE(byt_cht_es8316_widgets),
        .dapm_routes = byt_cht_es8316_audio_map,
        .num_dapm_routes = ARRAY_SIZE(byt_cht_es8316_audio_map),
        .controls = byt_cht_es8316_controls,
        .num_controls = ARRAY_SIZE(byt_cht_es8316_controls),
        .fully_routed = true,
        .suspend_pre = byt_cht_es8316_suspend,
        .resume_post = byt_cht_es8316_resume,
};

static const struct acpi_gpio_params first_gpio = { 0, 0, false };

static const struct acpi_gpio_mapping byt_cht_es8316_gpios[] = {
        { "speaker-enable-gpios", &first_gpio, 1 },
        { },
};

/* Please keep this list alphabetically sorted */
static const struct dmi_system_id byt_cht_es8316_quirk_table[] = {
        {       /* Irbis NB41 */
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "IRBIS"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "NB41"),
                },
                .driver_data = (void *)(BYT_CHT_ES8316_SSP0
                                        | BYT_CHT_ES8316_INTMIC_IN2_MAP
                                        | BYT_CHT_ES8316_JD_INVERTED),
        },
        {       /* Teclast X98 Plus II */
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "TECLAST"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "X98 Plus II"),
                },
                .driver_data = (void *)(BYT_CHT_ES8316_INTMIC_IN1_MAP
                                        | BYT_CHT_ES8316_JD_INVERTED),
        },
        {}
};

static int snd_byt_cht_es8316_mc_probe(struct platform_device *pdev)
{
        static const char * const mic_name[] = { "in1", "in2" };
        struct property_entry props[MAX_NO_PROPS] = {};
        struct byt_cht_es8316_private *priv;
        const struct dmi_system_id *dmi_id;
        struct device *dev = &pdev->dev;
        struct snd_soc_acpi_mach *mach;
        const char *platform_name;
        struct acpi_device *adev;
        struct device *codec_dev;
        bool sof_parent;
        unsigned int cnt = 0;
        int dai_index = 0;
        int i;
        int ret = 0;

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

        mach = dev->platform_data;
        /* fix index of codec dai */
        for (i = 0; i < ARRAY_SIZE(byt_cht_es8316_dais); i++) {
                if (!strcmp(byt_cht_es8316_dais[i].codecs->name,
                            "i2c-ESSX8316:00")) {
                        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));
                put_device(&adev->dev);
                byt_cht_es8316_dais[dai_index].codecs->name = codec_name;
        }

        /* override plaform name, if required */
        byt_cht_es8316_card.dev = dev;
        platform_name = mach->mach_params.platform;

        ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_es8316_card,
                                                    platform_name);
        if (ret)
                return ret;

        /* Check for BYTCR or other platform and setup quirks */
        dmi_id = dmi_first_match(byt_cht_es8316_quirk_table);
        if (dmi_id) {
                quirk = (unsigned long)dmi_id->driver_data;
        } else if (soc_intel_is_byt() &&
                   mach->mach_params.acpi_ipc_irq_index == 0) {
                /* On BYTCR default to SSP0, internal-mic-in2-map, mono-spk */
                quirk = BYT_CHT_ES8316_SSP0 | BYT_CHT_ES8316_INTMIC_IN2_MAP |
                        BYT_CHT_ES8316_MONO_SPEAKER;
        } else {
                /* Others default to internal-mic-in1-map, mono-speaker */
                quirk = BYT_CHT_ES8316_INTMIC_IN1_MAP |
                        BYT_CHT_ES8316_MONO_SPEAKER;
        }
        if (quirk_override != -1) {
                dev_info(dev, "Overriding quirk 0x%lx => 0x%x\n",
                         quirk, quirk_override);
                quirk = quirk_override;
        }
        log_quirks(dev);

        if (quirk & BYT_CHT_ES8316_SSP0)
                byt_cht_es8316_dais[dai_index].cpus->dai_name = "ssp0-port";

        /* get the clock */
        priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3");
        if (IS_ERR(priv->mclk)) {
                ret = PTR_ERR(priv->mclk);
                dev_err(dev, "clk_get pmc_plt_clk_3 failed: %d\n", ret);
                return ret;
        }

        /* get speaker enable GPIO */
        codec_dev = bus_find_device_by_name(&i2c_bus_type, NULL, codec_name);
        if (!codec_dev)
                return -EPROBE_DEFER;

        if (quirk & BYT_CHT_ES8316_JD_INVERTED)
                props[cnt++] = PROPERTY_ENTRY_BOOL("everest,jack-detect-inverted");

        if (cnt) {
                ret = device_add_properties(codec_dev, props);
                if (ret) {
                        put_device(codec_dev);
                        return ret;
                }
        }

        devm_acpi_dev_add_driver_gpios(codec_dev, byt_cht_es8316_gpios);
        priv->speaker_en_gpio =
                gpiod_get_index(codec_dev, "speaker-enable", 0,
                                /* see comment in byt_cht_es8316_resume */
                                GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE);
        put_device(codec_dev);

        if (IS_ERR(priv->speaker_en_gpio)) {
                ret = PTR_ERR(priv->speaker_en_gpio);
                switch (ret) {
                case -ENOENT:
                        priv->speaker_en_gpio = NULL;
                        break;
                default:
                        dev_err(dev, "get speaker GPIO failed: %d\n", ret);
                        fallthrough;
                case -EPROBE_DEFER:
                        return ret;
                }
        }

        snprintf(components_string, sizeof(components_string),
                 "cfg-spk:%s cfg-mic:%s",
                 (quirk & BYT_CHT_ES8316_MONO_SPEAKER) ? "1" : "2",
                 mic_name[BYT_CHT_ES8316_MAP(quirk)]);
        byt_cht_es8316_card.components = components_string;
#if !IS_ENABLED(CONFIG_SND_SOC_INTEL_USER_FRIENDLY_LONG_NAMES)
        snprintf(long_name, sizeof(long_name), "bytcht-es8316-%s-spk-%s-mic",
                 (quirk & BYT_CHT_ES8316_MONO_SPEAKER) ? "mono" : "stereo",
                 mic_name[BYT_CHT_ES8316_MAP(quirk)]);
        byt_cht_es8316_card.long_name = long_name;
#endif

        sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);

        /* set card and driver name */
        if (sof_parent) {
                byt_cht_es8316_card.name = SOF_CARD_NAME;
                byt_cht_es8316_card.driver_name = SOF_DRIVER_NAME;
        } else {
                byt_cht_es8316_card.name = CARD_NAME;
                byt_cht_es8316_card.driver_name = DRIVER_NAME;
        }

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

        /* register the soc card */
        snd_soc_card_set_drvdata(&byt_cht_es8316_card, priv);

        ret = devm_snd_soc_register_card(dev, &byt_cht_es8316_card);
        if (ret) {
                gpiod_put(priv->speaker_en_gpio);
                dev_err(dev, "snd_soc_register_card failed: %d\n", ret);
                return ret;
        }
        platform_set_drvdata(pdev, &byt_cht_es8316_card);
        return 0;
}

static int snd_byt_cht_es8316_mc_remove(struct platform_device *pdev)
{
        struct snd_soc_card *card = platform_get_drvdata(pdev);
        struct byt_cht_es8316_private *priv = snd_soc_card_get_drvdata(card);

        gpiod_put(priv->speaker_en_gpio);
        return 0;
}

static struct platform_driver snd_byt_cht_es8316_mc_driver = {
        .driver = {
                .name = "bytcht_es8316",
        },
        .probe = snd_byt_cht_es8316_mc_probe,
        .remove = snd_byt_cht_es8316_mc_remove,
};

module_platform_driver(snd_byt_cht_es8316_mc_driver);
MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
MODULE_AUTHOR("David Yang <yangxiaohua@everest-semi.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:bytcht_es8316");