// SPDX-License-Identifier: GPL-2.0-only
/*
 * Sound card driver for Intel Haswell Lynx Point with Realtek 5640
 *
 * Copyright (C) 2013, Intel Corporation
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include "../../codecs/rt5640.h"

static const struct snd_soc_dapm_widget card_widgets[] = {
        SND_SOC_DAPM_HP("Headphones", NULL),
        SND_SOC_DAPM_MIC("Mic", NULL),
};

static const struct snd_soc_dapm_route card_routes[] = {
        {"Headphones", NULL, "HPOR"},
        {"Headphones", NULL, "HPOL"},
        {"IN2P", NULL, "Mic"},

        /* CODEC BE connections */
        {"SSP0 CODEC IN", NULL, "AIF1 Capture"},
        {"AIF1 Playback", NULL, "SSP0 CODEC OUT"},
};

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

        /* The ADSP will convert the FE rate to 48k, stereo. */
        rate->min = rate->max = 48000;
        channels->min = channels->max = 2;
        /* Set SSP0 to 16 bit. */
        params_set_format(params, SNDRV_PCM_FORMAT_S16_LE);

        return 0;
}

static int codec_link_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);
        int ret;

        ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, 12288000, SND_SOC_CLOCK_IN);
        if (ret < 0) {
                dev_err(rtd->dev, "set codec sysclk failed: %d\n", ret);
                return ret;
        }

        /* Set correct codec filter for DAI format and clock config. */
        snd_soc_component_update_bits(codec_dai->component, 0x83, 0xffff, 0x8000);

        return ret;
}

static const struct snd_soc_ops codec_link_ops = {
        .hw_params = codec_link_hw_params,
};

SND_SOC_DAILINK_DEF(system, DAILINK_COMP_ARRAY(COMP_CPU("System Pin")));
SND_SOC_DAILINK_DEF(offload0, DAILINK_COMP_ARRAY(COMP_CPU("Offload0 Pin")));
SND_SOC_DAILINK_DEF(offload1, DAILINK_COMP_ARRAY(COMP_CPU("Offload1 Pin")));
SND_SOC_DAILINK_DEF(loopback, DAILINK_COMP_ARRAY(COMP_CPU("Loopback Pin")));

SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY()));
SND_SOC_DAILINK_DEF(codec, DAILINK_COMP_ARRAY(COMP_CODEC("i2c-INT33CA:00", "rt5640-aif1")));
SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("haswell-pcm-audio")));
SND_SOC_DAILINK_DEF(ssp0_port, DAILINK_COMP_ARRAY(COMP_CPU("ssp0-port")));

static struct snd_soc_dai_link card_dai_links[] = {
        /* Front End DAI links */
        {
                .name = "System",
                .stream_name = "System Playback/Capture",
                .nonatomic = 1,
                .dynamic = 1,
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                SND_SOC_DAILINK_REG(system, dummy, platform),
        },
        {
                .name = "Offload0",
                .stream_name = "Offload0 Playback",
                .nonatomic = 1,
                .dynamic = 1,
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                .playback_only = 1,
                SND_SOC_DAILINK_REG(offload0, dummy, platform),
        },
        {
                .name = "Offload1",
                .stream_name = "Offload1 Playback",
                .nonatomic = 1,
                .dynamic = 1,
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                .playback_only = 1,
                SND_SOC_DAILINK_REG(offload1, dummy, platform),
        },
        {
                .name = "Loopback",
                .stream_name = "Loopback",
                .nonatomic = 1,
                .dynamic = 1,
                .trigger = {SND_SOC_DPCM_TRIGGER_POST, SND_SOC_DPCM_TRIGGER_POST},
                .capture_only = 1,
                SND_SOC_DAILINK_REG(loopback, dummy, platform),
        },
        /* Back End DAI links */
        {
                /* SSP0 - Codec */
                .name = "Codec",
                .id = 0,
                .nonatomic = 1,
                .no_pcm = 1,
                .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC,
                .ignore_pmdown_time = 1,
                .be_hw_params_fixup = codec_link_hw_params_fixup,
                .ops = &codec_link_ops,
                SND_SOC_DAILINK_REG(ssp0_port, codec, platform),
        },
};

static struct snd_soc_card hsw_rt5640_card = {
        .name = "haswell-rt5640",
        .owner = THIS_MODULE,
        .dai_link = card_dai_links,
        .num_links = ARRAY_SIZE(card_dai_links),
        .dapm_widgets = card_widgets,
        .num_dapm_widgets = ARRAY_SIZE(card_widgets),
        .dapm_routes = card_routes,
        .num_dapm_routes = ARRAY_SIZE(card_routes),
        .fully_routed = true,
};

static int hsw_rt5640_probe(struct platform_device *pdev)
{
        struct snd_soc_acpi_mach *mach;
        struct device *dev = &pdev->dev;
        int ret;

        hsw_rt5640_card.dev = dev;
        mach = dev_get_platdata(dev);

        ret = snd_soc_fixup_dai_links_platform_name(&hsw_rt5640_card, mach->mach_params.platform);
        if (ret)
                return ret;

        return devm_snd_soc_register_card(dev, &hsw_rt5640_card);
}

static struct platform_driver hsw_rt5640_driver = {
        .probe = hsw_rt5640_probe,
        .driver = {
                .name = "hsw_rt5640",
                .pm = &snd_soc_pm_ops,
        },
};

module_platform_driver(hsw_rt5640_driver)

MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
MODULE_DESCRIPTION("Sound card driver for Intel Haswell Lynx Point with Realtek 5640");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:hsw_rt5640");