// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright(c) 2023 Intel Corporation
//
// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
//

#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/processor.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 <asm/cpu_device_id.h>
#include "../utils.h"

#define ES8336_CODEC_DAI        "ES8316 HiFi"

struct avs_card_drvdata {
        struct snd_soc_jack jack;
        struct gpio_desc *gpiod;
};

static const struct acpi_gpio_params enable_gpio = { 0, 0, true };

static const struct acpi_gpio_mapping speaker_gpios[] = {
        { "speaker-enable-gpios", &enable_gpio, 1, ACPI_GPIO_QUIRK_ONLY_GPIOIO },
        { }
};

static int avs_es8336_speaker_power_event(struct snd_soc_dapm_widget *w,
                                          struct snd_kcontrol *kcontrol, int event)
{
        struct snd_soc_card *card = snd_soc_dapm_to_card(w->dapm);
        struct avs_card_drvdata *data;
        bool speaker_en;

        data = snd_soc_card_get_drvdata(card);
        /* As enable_gpio has active_low=true, logic is inverted. */
        speaker_en = !SND_SOC_DAPM_EVENT_ON(event);

        gpiod_set_value_cansleep(data->gpiod, speaker_en);
        return 0;
}

static const struct snd_soc_dapm_widget card_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,
                            avs_es8336_speaker_power_event,
                            SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
};

static const struct snd_soc_dapm_route card_routes[] = {
        {"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" widget.
         */
        {"Speaker", NULL, "HPOL"},
        {"Speaker", NULL, "HPOR"},
        {"Speaker", NULL, "Speaker Power"},

        /* Mic route map */
        {"MIC1", NULL, "Internal Mic"},
        {"MIC2", NULL, "Headset Mic"},
};

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

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

static int avs_es8336_codec_init(struct snd_soc_pcm_runtime *runtime)
{
        struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
        struct snd_soc_component *component = codec_dai->component;
        struct snd_soc_card *card = runtime->card;
        struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
        struct snd_soc_jack_pin *pins;
        struct avs_card_drvdata *data;
        struct gpio_desc *gpiod;
        int num_pins, ret;

        data = snd_soc_card_get_drvdata(card);
        num_pins = ARRAY_SIZE(card_headset_pins);

        pins = devm_kmemdup_array(card->dev, card_headset_pins, num_pins,
                                  sizeof(card_headset_pins[0]), GFP_KERNEL);
        if (!pins)
                return -ENOMEM;

        ret = snd_soc_card_jack_new_pins(card, "Headset Jack", SND_JACK_HEADSET | SND_JACK_BTN_0,
                                         &data->jack, pins, num_pins);
        if (ret)
                return ret;

        ret = devm_acpi_dev_add_driver_gpios(codec_dai->dev, speaker_gpios);
        if (ret)
                dev_warn(codec_dai->dev, "Unable to add GPIO mapping table\n");

        gpiod = gpiod_get_optional(codec_dai->dev, "speaker-enable", GPIOD_OUT_LOW);
        if (IS_ERR(gpiod))
                return dev_err_probe(codec_dai->dev, PTR_ERR(gpiod), "Get gpiod failed: %ld\n",
                                     PTR_ERR(gpiod));

        data->gpiod = gpiod;
        snd_jack_set_key(data->jack.jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
        snd_soc_component_set_jack(component, &data->jack, NULL);

        snd_soc_dapm_set_idle_bias(dapm, false);

        return 0;
}

static void avs_es8336_codec_exit(struct snd_soc_pcm_runtime *runtime)
{
        struct avs_card_drvdata *data = snd_soc_card_get_drvdata(runtime->card);
        struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);

        snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
        gpiod_put(data->gpiod);
}

static int avs_es8336_hw_params(struct snd_pcm_substream *substream,
                                struct snd_pcm_hw_params *params)
{
        struct snd_soc_pcm_runtime *runtime = snd_soc_substream_to_rtd(substream);
        struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(runtime, 0);
        int clk_freq;
        int ret;

        switch (boot_cpu_data.x86_vfm) {
        case INTEL_KABYLAKE_L:
        case INTEL_KABYLAKE:
                clk_freq = 24000000;
                break;
        default:
                clk_freq = 19200000;
                break;
        }

        ret = snd_soc_dai_set_sysclk(codec_dai, 1, clk_freq, SND_SOC_CLOCK_OUT);
        if (ret < 0)
                dev_err(runtime->dev, "Set codec sysclk failed: %d\n", ret);

        return ret;
}

static const struct snd_soc_ops avs_es8336_ops = {
        .hw_params = avs_es8336_hw_params,
};

static int avs_es8336_be_fixup(struct snd_soc_pcm_runtime *runtime,
                               struct snd_pcm_hw_params *params)
{
        struct snd_interval *rate, *channels;
        struct snd_mask *fmt;

        rate = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
        channels = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
        fmt = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);

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

        /* set SSPN to 24 bit */
        snd_mask_none(fmt);
        snd_mask_set_format(fmt, SNDRV_PCM_FORMAT_S24_3LE);

        return 0;
}

static int avs_create_dai_link(struct device *dev, int ssp_port, int tdm_slot,
                               struct snd_soc_dai_link **dai_link)
{
        struct snd_soc_dai_link_component *platform;
        struct snd_soc_dai_link *dl;

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

        dl->name = devm_kasprintf(dev, GFP_KERNEL,
                                  AVS_STRING_FMT("SSP", "-Codec", ssp_port, tdm_slot));
        dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
        dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
        if (!dl->name || !dl->cpus || !dl->codecs)
                return -ENOMEM;

        dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
                                            AVS_STRING_FMT("SSP", " Pin", ssp_port, tdm_slot));
        dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-ESSX8336:00");
        dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, ES8336_CODEC_DAI);
        if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
                return -ENOMEM;

        platform->name = dev_name(dev);
        dl->num_cpus = 1;
        dl->num_codecs = 1;
        dl->platforms = platform;
        dl->num_platforms = 1;
        dl->id = 0;
        dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC;
        dl->init = avs_es8336_codec_init;
        dl->exit = avs_es8336_codec_exit;
        dl->be_hw_params_fixup = avs_es8336_be_fixup;
        dl->ops = &avs_es8336_ops;
        dl->nonatomic = 1;
        dl->no_pcm = 1;

        *dai_link = dl;

        return 0;
}

static int avs_card_suspend_pre(struct snd_soc_card *card)
{
        struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, ES8336_CODEC_DAI);

        return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
}

static int avs_card_resume_post(struct snd_soc_card *card)
{
        struct snd_soc_dai *codec_dai = snd_soc_card_get_codec_dai(card, ES8336_CODEC_DAI);
        struct avs_card_drvdata *data = snd_soc_card_get_drvdata(card);

        return snd_soc_component_set_jack(codec_dai->component, &data->jack, NULL);
}

static int avs_es8336_probe(struct platform_device *pdev)
{
        struct snd_soc_dai_link *dai_link;
        struct snd_soc_acpi_mach *mach;
        struct avs_mach_pdata *pdata;
        struct avs_card_drvdata *data;
        struct snd_soc_card *card;
        struct device *dev = &pdev->dev;
        int ssp_port, tdm_slot, ret;

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

        ret = avs_mach_get_ssp_tdm(dev, mach, &ssp_port, &tdm_slot);
        if (ret)
                return ret;

        ret = avs_create_dai_link(dev, ssp_port, tdm_slot, &dai_link);
        if (ret) {
                dev_err(dev, "Failed to create dai link: %d", ret);
                return ret;
        }

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

        if (pdata->obsolete_card_names) {
                card->name = "avs_es8336";
        } else {
                card->driver_name = "avs_es8336";
                card->long_name = card->name = "AVS I2S ES8336";
        }
        card->dev = dev;
        card->owner = THIS_MODULE;
        card->suspend_pre = avs_card_suspend_pre;
        card->resume_post = avs_card_resume_post;
        card->dai_link = dai_link;
        card->num_links = 1;
        card->controls = card_controls;
        card->num_controls = ARRAY_SIZE(card_controls);
        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;
        snd_soc_card_set_drvdata(card, data);

        return devm_snd_soc_register_deferrable_card(dev, card);
}

static const struct platform_device_id avs_es8336_driver_ids[] = {
        {
                .name = "avs_es8336",
        },
        {},
};
MODULE_DEVICE_TABLE(platform, avs_es8336_driver_ids);

static struct platform_driver avs_es8336_driver = {
        .probe = avs_es8336_probe,
        .driver = {
                .name = "avs_es8336",
                .pm = &snd_soc_pm_ops,
        },
        .id_table = avs_es8336_driver_ids,
};

module_platform_driver(avs_es8336_driver);

MODULE_DESCRIPTION("Intel es8336 machine driver");
MODULE_LICENSE("GPL");