// SPDX-License-Identifier: GPL-2.0-only
/*
 * omap-twl4030.c  --  SoC audio for TI SoC based boards with twl4030 codec
 *
 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com
 * All rights reserved.
 *
 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
 *
 * This driver replaces the following machine drivers:
 * omap3beagle (Author: Steve Sakoman <steve@sakoman.com>)
 * omap3evm (Author: Anuj Aggarwal <anuj.aggarwal@ti.com>)
 * overo (Author: Steve Sakoman <steve@sakoman.com>)
 * igep0020 (Author: Enric Balletbo i Serra <eballetbo@iseebcn.com>)
 * zoom2 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
 * sdp3430 (Author: Misael Lopez Cruz <misael.lopez@ti.com>)
 */

#include <linux/platform_device.h>
#include <linux/platform_data/omap-twl4030.h>
#include <linux/module.h>
#include <linux/of.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>

#include "omap-mcbsp.h"

struct omap_twl4030 {
        struct snd_soc_jack hs_jack;
};

static int omap_twl4030_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);
        unsigned int fmt;

        switch (params_channels(params)) {
        case 2: /* Stereo I2S mode */
                fmt =   SND_SOC_DAIFMT_I2S |
                        SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBP_CFP;
                break;
        case 4: /* Four channel TDM mode */
                fmt =   SND_SOC_DAIFMT_DSP_A |
                        SND_SOC_DAIFMT_IB_NF |
                        SND_SOC_DAIFMT_CBP_CFP;
                break;
        default:
                return -EINVAL;
        }

        return snd_soc_runtime_set_dai_fmt(rtd, fmt);
}

static const struct snd_soc_ops omap_twl4030_ops = {
        .hw_params = omap_twl4030_hw_params,
};

static const struct snd_soc_dapm_widget dapm_widgets[] = {
        SND_SOC_DAPM_SPK("Earpiece Spk", NULL),
        SND_SOC_DAPM_SPK("Handsfree Spk", NULL),
        SND_SOC_DAPM_HP("Headset Stereophone", NULL),
        SND_SOC_DAPM_SPK("Ext Spk", NULL),
        SND_SOC_DAPM_SPK("Carkit Spk", NULL),

        SND_SOC_DAPM_MIC("Main Mic", NULL),
        SND_SOC_DAPM_MIC("Sub Mic", NULL),
        SND_SOC_DAPM_MIC("Headset Mic", NULL),
        SND_SOC_DAPM_MIC("Carkit Mic", NULL),
        SND_SOC_DAPM_MIC("Digital0 Mic", NULL),
        SND_SOC_DAPM_MIC("Digital1 Mic", NULL),
        SND_SOC_DAPM_LINE("Line In", NULL),
};

static const struct snd_soc_dapm_route audio_map[] = {
        /* Headset Stereophone:  HSOL, HSOR */
        {"Headset Stereophone", NULL, "HSOL"},
        {"Headset Stereophone", NULL, "HSOR"},
        /* External Speakers: HFL, HFR */
        {"Handsfree Spk", NULL, "HFL"},
        {"Handsfree Spk", NULL, "HFR"},
        /* External Speakers: PredrivL, PredrivR */
        {"Ext Spk", NULL, "PREDRIVEL"},
        {"Ext Spk", NULL, "PREDRIVER"},
        /* Carkit speakers:  CARKITL, CARKITR */
        {"Carkit Spk", NULL, "CARKITL"},
        {"Carkit Spk", NULL, "CARKITR"},
        /* Earpiece */
        {"Earpiece Spk", NULL, "EARPIECE"},

        /* External Mics: MAINMIC, SUBMIC with bias */
        {"MAINMIC", NULL, "Main Mic"},
        {"Main Mic", NULL, "Mic Bias 1"},
        {"SUBMIC", NULL, "Sub Mic"},
        {"Sub Mic", NULL, "Mic Bias 2"},
        /* Headset Mic: HSMIC with bias */
        {"HSMIC", NULL, "Headset Mic"},
        {"Headset Mic", NULL, "Headset Mic Bias"},
        /* Digital Mics: DIGIMIC0, DIGIMIC1 with bias */
        {"DIGIMIC0", NULL, "Digital0 Mic"},
        {"Digital0 Mic", NULL, "Mic Bias 1"},
        {"DIGIMIC1", NULL, "Digital1 Mic"},
        {"Digital1 Mic", NULL, "Mic Bias 2"},
        /* Carkit In: CARKITMIC */
        {"CARKITMIC", NULL, "Carkit Mic"},
        /* Aux In: AUXL, AUXR */
        {"AUXL", NULL, "Line In"},
        {"AUXR", NULL, "Line In"},
};

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

/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
        {
                .name = "ti,jack-det",
                .report = SND_JACK_HEADSET,
                .debounce_time = 200,
        },
};

static inline void twl4030_disconnect_pin(struct snd_soc_dapm_context *dapm,
                                          int connected, char *pin)
{
        if (!connected)
                snd_soc_dapm_disable_pin(dapm, pin);
}

static int omap_twl4030_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 omap_tw4030_pdata *pdata = dev_get_platdata(card->dev);
        struct omap_twl4030 *priv = snd_soc_card_get_drvdata(card);
        int ret = 0;

        /*
         * This is a bit of a hack, but the GPIO is optional so we
         * only want to add the jack detection if the GPIO is there.
         */
        if (of_property_present(card->dev->of_node, "ti,jack-det-gpio")) {
                hs_jack_gpios[0].gpiod_dev = card->dev;
                hs_jack_gpios[0].idx = 0;

                ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
                                                 SND_JACK_HEADSET,
                                                 &priv->hs_jack, hs_jack_pins,
                                                 ARRAY_SIZE(hs_jack_pins));
                if (ret)
                        return ret;

                ret = snd_soc_jack_add_gpios(&priv->hs_jack,
                                             ARRAY_SIZE(hs_jack_gpios),
                                             hs_jack_gpios);
                if (ret)
                        return ret;
        }

        /*
         * NULL pdata means we booted with DT. In this case the routing is
         * provided and the card is fully routed, no need to mark pins.
         */
        if (!pdata || !pdata->custom_routing)
                return ret;

        /* Disable not connected paths if not used */
        twl4030_disconnect_pin(dapm, pdata->has_ear, "Earpiece Spk");
        twl4030_disconnect_pin(dapm, pdata->has_hf, "Handsfree Spk");
        twl4030_disconnect_pin(dapm, pdata->has_hs, "Headset Stereophone");
        twl4030_disconnect_pin(dapm, pdata->has_predriv, "Ext Spk");
        twl4030_disconnect_pin(dapm, pdata->has_carkit, "Carkit Spk");

        twl4030_disconnect_pin(dapm, pdata->has_mainmic, "Main Mic");
        twl4030_disconnect_pin(dapm, pdata->has_submic, "Sub Mic");
        twl4030_disconnect_pin(dapm, pdata->has_hsmic, "Headset Mic");
        twl4030_disconnect_pin(dapm, pdata->has_carkitmic, "Carkit Mic");
        twl4030_disconnect_pin(dapm, pdata->has_digimic0, "Digital0 Mic");
        twl4030_disconnect_pin(dapm, pdata->has_digimic1, "Digital1 Mic");
        twl4030_disconnect_pin(dapm, pdata->has_linein, "Line In");

        return ret;
}

/* Digital audio interface glue - connects codec <--> CPU */
SND_SOC_DAILINK_DEFS(hifi,
        DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.2")),
        DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-hifi")),
        DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.2")));

SND_SOC_DAILINK_DEFS(voice,
        DAILINK_COMP_ARRAY(COMP_CPU("omap-mcbsp.3")),
        DAILINK_COMP_ARRAY(COMP_CODEC("twl4030-codec", "twl4030-voice")),
        DAILINK_COMP_ARRAY(COMP_PLATFORM("omap-mcbsp.3")));

static struct snd_soc_dai_link omap_twl4030_dai_links[] = {
        {
                .name = "TWL4030 HiFi",
                .stream_name = "TWL4030 HiFi",
                .init = omap_twl4030_init,
                .ops = &omap_twl4030_ops,
                SND_SOC_DAILINK_REG(hifi),
        },
        {
                .name = "TWL4030 Voice",
                .stream_name = "TWL4030 Voice",
                .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
                           SND_SOC_DAIFMT_CBP_CFP,
                SND_SOC_DAILINK_REG(voice),
        },
};

/* Audio machine driver */
static struct snd_soc_card omap_twl4030_card = {
        .owner = THIS_MODULE,
        .dai_link = omap_twl4030_dai_links,
        .num_links = ARRAY_SIZE(omap_twl4030_dai_links),

        .dapm_widgets = dapm_widgets,
        .num_dapm_widgets = ARRAY_SIZE(dapm_widgets),
        .dapm_routes = audio_map,
        .num_dapm_routes = ARRAY_SIZE(audio_map),
};

static int omap_twl4030_probe(struct platform_device *pdev)
{
        struct omap_tw4030_pdata *pdata = dev_get_platdata(&pdev->dev);
        struct device_node *node = pdev->dev.of_node;
        struct snd_soc_card *card = &omap_twl4030_card;
        struct omap_twl4030 *priv;
        int ret = 0;

        card->dev = &pdev->dev;

        priv = devm_kzalloc(&pdev->dev, sizeof(struct omap_twl4030), GFP_KERNEL);
        if (priv == NULL)
                return -ENOMEM;

        if (node) {
                struct device_node *dai_node;
                struct property *prop;

                if (snd_soc_of_parse_card_name(card, "ti,model")) {
                        dev_err(&pdev->dev, "Card name is not provided\n");
                        return -ENODEV;
                }

                dai_node = of_parse_phandle(node, "ti,mcbsp", 0);
                if (!dai_node) {
                        dev_err(&pdev->dev, "McBSP node is not provided\n");
                        return -EINVAL;
                }
                omap_twl4030_dai_links[0].cpus->dai_name  = NULL;
                omap_twl4030_dai_links[0].cpus->of_node = dai_node;

                omap_twl4030_dai_links[0].platforms->name  = NULL;
                omap_twl4030_dai_links[0].platforms->of_node = dai_node;

                dai_node = of_parse_phandle(node, "ti,mcbsp-voice", 0);
                if (!dai_node) {
                        card->num_links = 1;
                } else {
                        omap_twl4030_dai_links[1].cpus->dai_name  = NULL;
                        omap_twl4030_dai_links[1].cpus->of_node = dai_node;

                        omap_twl4030_dai_links[1].platforms->name  = NULL;
                        omap_twl4030_dai_links[1].platforms->of_node = dai_node;
                }

                /* Optional: audio routing can be provided */
                prop = of_find_property(node, "ti,audio-routing", NULL);
                if (prop) {
                        ret = snd_soc_of_parse_audio_routing(card,
                                                            "ti,audio-routing");
                        if (ret)
                                return ret;

                        card->fully_routed = 1;
                }
        } else if (pdata) {
                if (pdata->card_name) {
                        card->name = pdata->card_name;
                } else {
                        dev_err(&pdev->dev, "Card name is not provided\n");
                        return -ENODEV;
                }

                if (!pdata->voice_connected)
                        card->num_links = 1;
        } else {
                dev_err(&pdev->dev, "Missing pdata\n");
                return -ENODEV;
        }

        snd_soc_card_set_drvdata(card, priv);
        ret = devm_snd_soc_register_card(&pdev->dev, card);
        if (ret) {
                dev_err(&pdev->dev, "devm_snd_soc_register_card() failed: %d\n",
                        ret);
                return ret;
        }

        return 0;
}

static const struct of_device_id omap_twl4030_of_match[] = {
        {.compatible = "ti,omap-twl4030", },
        { },
};
MODULE_DEVICE_TABLE(of, omap_twl4030_of_match);

static struct platform_driver omap_twl4030_driver = {
        .driver = {
                .name = "omap-twl4030",
                .pm = &snd_soc_pm_ops,
                .of_match_table = omap_twl4030_of_match,
        },
        .probe = omap_twl4030_probe,
};

module_platform_driver(omap_twl4030_driver);

MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
MODULE_DESCRIPTION("ALSA SoC for TI SoC based boards with twl4030 codec");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap-twl4030");