// SPDX-License-Identifier: GPL-2.0+

#include "../codecs/wm8994.h"
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <linux/module.h>
#include <linux/of.h>

 /*
  * Default CFG switch settings to use this driver:
  *     SMDKV310: CFG5-1000, CFG7-111111
  */

 /*
  * Configure audio route as :-
  * $ amixer sset 'DAC1' on,on
  * $ amixer sset 'Right Headphone Mux' 'DAC'
  * $ amixer sset 'Left Headphone Mux' 'DAC'
  * $ amixer sset 'DAC1R Mixer AIF1.1' on
  * $ amixer sset 'DAC1L Mixer AIF1.1' on
  * $ amixer sset 'IN2L' on
  * $ amixer sset 'IN2L PGA IN2LN' on
  * $ amixer sset 'MIXINL IN2L' on
  * $ amixer sset 'AIF1ADC1L Mixer ADC/DMIC' on
  * $ amixer sset 'IN2R' on
  * $ amixer sset 'IN2R PGA IN2RN' on
  * $ amixer sset 'MIXINR IN2R' on
  * $ amixer sset 'AIF1ADC1R Mixer ADC/DMIC' on
  */

/* SMDK has a 16.934MHZ crystal attached to WM8994 */
#define SMDK_WM8994_FREQ 16934000

static int smdk_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);
        unsigned int pll_out;
        int ret;

        /* AIF1CLK should be >=3MHz for optimal performance */
        if (params_width(params) == 24)
                pll_out = params_rate(params) * 384;
        else if (params_rate(params) == 8000 || params_rate(params) == 11025)
                pll_out = params_rate(params) * 512;
        else
                pll_out = params_rate(params) * 256;

        ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, WM8994_FLL_SRC_MCLK1,
                                        SMDK_WM8994_FREQ, pll_out);
        if (ret < 0)
                return ret;

        ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
                                        pll_out, SND_SOC_CLOCK_IN);
        if (ret < 0)
                return ret;

        return 0;
}

/*
 * SMDK WM8994 DAI operations.
 */
static const struct snd_soc_ops smdk_ops = {
        .hw_params = smdk_hw_params,
};

static int smdk_wm8994_init_paiftx(struct snd_soc_pcm_runtime *rtd)
{
        struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(rtd->card);

        /* Other pins NC */
        snd_soc_dapm_disable_pin(dapm, "HPOUT2P");
        snd_soc_dapm_disable_pin(dapm, "HPOUT2N");
        snd_soc_dapm_disable_pin(dapm, "SPKOUTLN");
        snd_soc_dapm_disable_pin(dapm, "SPKOUTLP");
        snd_soc_dapm_disable_pin(dapm, "SPKOUTRP");
        snd_soc_dapm_disable_pin(dapm, "SPKOUTRN");
        snd_soc_dapm_disable_pin(dapm, "LINEOUT1N");
        snd_soc_dapm_disable_pin(dapm, "LINEOUT1P");
        snd_soc_dapm_disable_pin(dapm, "LINEOUT2N");
        snd_soc_dapm_disable_pin(dapm, "LINEOUT2P");
        snd_soc_dapm_disable_pin(dapm, "IN1LP");
        snd_soc_dapm_disable_pin(dapm, "IN2LP:VXRN");
        snd_soc_dapm_disable_pin(dapm, "IN1RP");
        snd_soc_dapm_disable_pin(dapm, "IN2RP:VXRP");

        return 0;
}

SND_SOC_DAILINK_DEFS(aif1,
        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));

SND_SOC_DAILINK_DEFS(fifo_tx,
        DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s-sec")),
        DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
        DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s-sec")));

static struct snd_soc_dai_link smdk_dai[] = {
        { /* Primary DAI i/f */
                .name = "WM8994 AIF1",
                .stream_name = "Pri_Dai",
                .init = smdk_wm8994_init_paiftx,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBP_CFP,
                .ops = &smdk_ops,
                SND_SOC_DAILINK_REG(aif1),
        }, { /* Sec_Fifo Playback i/f */
                .name = "Sec_FIFO TX",
                .stream_name = "Sec_Dai",
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
                        SND_SOC_DAIFMT_CBP_CFP,
                .ops = &smdk_ops,
                SND_SOC_DAILINK_REG(fifo_tx),
        },
};

static struct snd_soc_card smdk = {
        .name = "SMDK-I2S",
        .owner = THIS_MODULE,
        .dai_link = smdk_dai,
        .num_links = ARRAY_SIZE(smdk_dai),
};

static const struct of_device_id samsung_wm8994_of_match[] = {
        { .compatible = "samsung,smdk-wm8994" },
        {},
};
MODULE_DEVICE_TABLE(of, samsung_wm8994_of_match);

static int smdk_audio_probe(struct platform_device *pdev)
{
        int ret;
        struct device_node *np = pdev->dev.of_node;
        struct snd_soc_card *card = &smdk;

        card->dev = &pdev->dev;

        if (np) {
                smdk_dai[0].cpus->dai_name = NULL;
                smdk_dai[0].cpus->of_node = of_parse_phandle(np,
                                "samsung,i2s-controller", 0);
                if (!smdk_dai[0].cpus->of_node) {
                        dev_err(&pdev->dev,
                           "Property 'samsung,i2s-controller' missing or invalid\n");
                        ret = -EINVAL;
                        return ret;
                }

                smdk_dai[0].platforms->name = NULL;
                smdk_dai[0].platforms->of_node = smdk_dai[0].cpus->of_node;
        }

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

        if (ret)
                dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");

        return ret;
}

static struct platform_driver smdk_audio_driver = {
        .driver         = {
                .name   = "smdk-audio-wm8994",
                .of_match_table = samsung_wm8994_of_match,
                .pm     = &snd_soc_pm_ops,
        },
        .probe          = smdk_audio_probe,
};

module_platform_driver(smdk_audio_driver);

MODULE_DESCRIPTION("ALSA SoC SMDK WM8994");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:smdk-audio-wm8994");