ehl_rt5660.c

// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2020 Intel Corporation

/*
 * ehl_rt5660 - ASOC Machine driver for Elkhart Lake platforms
 * with rt5660 codec
 */

#include <linux/acpi.h>
#include <sound/core.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/gfp.h>
#include <sound/jack.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>

#include "hda_dsp_common.h"
#include "../../codecs/rt5660.h"

#define DUAL_CHANNEL 2
#define HDMI_LINK_START 3
#define HDMI_LINE_END 6
#define NAME_SIZE	32
#define IDISP_CODEC_MASK	0x4

struct sof_card_private {
	struct list_head hdmi_pcm_list;
	bool idisp_codec;
};

static const struct snd_kcontrol_new rt5660_controls[] = {
	SOC_DAPM_PIN_SWITCH("Speaker"),
	/* There are two MICBIAS in rt5660, each for one MIC */
	SOC_DAPM_PIN_SWITCH("Headset Mic"),
	SOC_DAPM_PIN_SWITCH("Headset Mic2"),
	SOC_DAPM_PIN_SWITCH("Line Out"),
};

static const struct snd_soc_dapm_widget rt5660_widgets[] = {
	SND_SOC_DAPM_SPK("Speaker", NULL),
	SND_SOC_DAPM_MIC("Headset Mic", NULL),
	SND_SOC_DAPM_MIC("Headset Mic2", NULL),
	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
};

static const struct snd_soc_dapm_route rt5660_map[] = {
	{"Speaker", NULL, "SPO"},

	{"Headset Mic", NULL, "MICBIAS1"},
	{"Headset Mic2", NULL, "MICBIAS2"},

	{"IN1P", NULL, "Headset Mic"},
	{"IN2P", NULL, "Headset Mic2"},

	{"Line Out", NULL, "LOUTL"},
	{"Line Out", NULL, "LOUTR"},

	{"DMic", NULL, "SoC DMIC"},
};

struct sof_hdmi_pcm {
	struct list_head head;
	struct snd_soc_dai *codec_dai;
	int device;
};

static int hdmi_init(struct snd_soc_pcm_runtime *rtd)
{
	struct sof_card_private *ctx = snd_soc_card_get_drvdata(rtd->card);
	struct snd_soc_dai *dai = snd_soc_rtd_to_codec(rtd, 0);
	struct sof_hdmi_pcm *pcm;

	pcm = devm_kzalloc(rtd->card->dev, sizeof(*pcm), GFP_KERNEL);
	if (!pcm)
		return -ENOMEM;

	/* dai_link id is 1:1 mapped to the PCM device */
	pcm->device = rtd->dai_link->id;
	pcm->codec_dai = dai;

	list_add_tail(&pcm->head, &ctx->hdmi_pcm_list);

	return 0;
}

static int card_late_probe(struct snd_soc_card *card)
{
	struct sof_card_private *ctx = snd_soc_card_get_drvdata(card);
	struct sof_hdmi_pcm *pcm;

	if (list_empty(&ctx->hdmi_pcm_list))
		return -ENOENT;

	if (!ctx->idisp_codec)
		return 0;

	pcm = list_first_entry(&ctx->hdmi_pcm_list, struct sof_hdmi_pcm, head);

	return hda_dsp_hdmi_build_controls(card, pcm->codec_dai->component);
}

static int rt5660_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,
				     RT5660_SCLK_S_PLL1,
				     params_rate(params) * 512,
				     SND_SOC_CLOCK_IN);
	if (ret < 0) {
		dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", ret);
		return ret;
	}

	ret = snd_soc_dai_set_pll(codec_dai, 0,
				  RT5660_PLL1_S_BCLK,
				  params_rate(params) * 50,
				  params_rate(params) * 512);
	if (ret < 0)
		dev_err(codec_dai->dev, "can't set codec pll: %d\n", ret);

	return ret;
}

static const struct snd_soc_ops rt5660_ops = {
	.hw_params = rt5660_hw_params,
};

SND_SOC_DAILINK_DEF(ssp0_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("SSP0 Pin")));

SND_SOC_DAILINK_DEF(rt5660_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10EC5660:00", "rt5660-aif1")));

SND_SOC_DAILINK_DEF(platform,
	DAILINK_COMP_ARRAY(COMP_PLATFORM("0000:00:1f.3")));

SND_SOC_DAILINK_DEF(dmic_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("DMIC01 Pin")));
SND_SOC_DAILINK_DEF(dmic_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));
SND_SOC_DAILINK_DEF(dmic16k,
	DAILINK_COMP_ARRAY(COMP_CPU("DMIC16k Pin")));

SND_SOC_DAILINK_DEF(idisp1_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("iDisp1 Pin")));
SND_SOC_DAILINK_DEF(idisp1_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi1")));

SND_SOC_DAILINK_DEF(idisp2_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("iDisp2 Pin")));
SND_SOC_DAILINK_DEF(idisp2_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi2")));

SND_SOC_DAILINK_DEF(idisp3_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("iDisp3 Pin")));
SND_SOC_DAILINK_DEF(idisp3_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi3")));

SND_SOC_DAILINK_DEF(idisp4_pin,
	DAILINK_COMP_ARRAY(COMP_CPU("iDisp4 Pin")));
SND_SOC_DAILINK_DEF(idisp4_codec,
	DAILINK_COMP_ARRAY(COMP_CODEC("ehdaudio0D2", "intel-hdmi-hifi4")));

static struct snd_soc_dai_link ehl_rt5660_dailink[] = {
	/* back ends */
	{
		.name = "SSP0-Codec",
		.id = 0,
		.no_pcm = 1,
		.ops = &rt5660_ops,
		SND_SOC_DAILINK_REG(ssp0_pin, rt5660_codec, platform),
	},
	{
		.name = "dmic48k",
		.id = 1,
		.ignore_suspend = 1,
		.capture_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(dmic_pin, dmic_codec, platform),
	},
	{
		.name = "dmic16k",
		.id = 2,
		.ignore_suspend = 1,
		.capture_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(dmic16k, dmic_codec, platform),
	},
	{
		.name = "iDisp1",
		.id = 5,
		.init = hdmi_init,
		.playback_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(idisp1_pin, idisp1_codec, platform),
	},
	{
		.name = "iDisp2",
		.id = 6,
		.init = hdmi_init,
		.playback_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(idisp2_pin, idisp2_codec, platform),
	},
	{
		.name = "iDisp3",
		.id = 7,
		.init = hdmi_init,
		.playback_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(idisp3_pin, idisp3_codec, platform),
	},
	{
		.name = "iDisp4",
		.id = 8,
		.init = hdmi_init,
		.playback_only = 1,
		.no_pcm = 1,
		SND_SOC_DAILINK_REG(idisp4_pin, idisp4_codec, platform),
	},
};

/* SoC card */
static struct snd_soc_card snd_soc_card_ehl_rt5660 = {
	.name = "ehl-rt5660",
	.owner = THIS_MODULE,
	.dai_link = ehl_rt5660_dailink,
	.num_links = ARRAY_SIZE(ehl_rt5660_dailink),
	.dapm_widgets = rt5660_widgets,
	.num_dapm_widgets = ARRAY_SIZE(rt5660_widgets),
	.dapm_routes = rt5660_map,
	.num_dapm_routes = ARRAY_SIZE(rt5660_map),
	.controls = rt5660_controls,
	.num_controls = ARRAY_SIZE(rt5660_controls),
	.fully_routed = true,
	.late_probe = card_late_probe,
};

/* If hdmi codec is not supported, switch to use dummy codec */
static void hdmi_link_init(struct snd_soc_card *card,
			   struct sof_card_private *ctx,
			   struct snd_soc_acpi_mach *mach)
{
	int i;

	if (mach->mach_params.codec_mask & IDISP_CODEC_MASK) {
		ctx->idisp_codec = true;
		return;
	}

	/*
	 * if HDMI is not enabled in kernel config, or
	 * hdmi codec is not supported
	 */
	for (i = HDMI_LINK_START; i <= HDMI_LINE_END; i++)
		card->dai_link[i].codecs[0] = snd_soc_dummy_dlc;
}

static int snd_ehl_rt5660_probe(struct platform_device *pdev)
{
	struct snd_soc_acpi_mach *mach;
	struct snd_soc_card *card = &snd_soc_card_ehl_rt5660;
	struct sof_card_private *ctx;
	int ret;

	card->dev = &pdev->dev;

	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;
	INIT_LIST_HEAD(&ctx->hdmi_pcm_list);
	snd_soc_card_set_drvdata(card, ctx);

	mach = pdev->dev.platform_data;
	ret = snd_soc_fixup_dai_links_platform_name(card,
						    mach->mach_params.platform);
	if (ret)
		return ret;

	hdmi_link_init(card, ctx, mach);

	return devm_snd_soc_register_card(&pdev->dev, card);
}

static const struct platform_device_id ehl_board_ids[] = {
	{ .name = "ehl_rt5660" },
	{ }
};
MODULE_DEVICE_TABLE(platform, ehl_board_ids);

static struct platform_driver snd_ehl_rt5660_driver = {
	.driver = {
		.name = "ehl_rt5660",
		.pm = &snd_soc_pm_ops,
	},
	.probe = snd_ehl_rt5660_probe,
	.id_table = ehl_board_ids,
};

module_platform_driver(snd_ehl_rt5660_driver);

MODULE_DESCRIPTION("ASoC Intel(R) Elkhartlake + rt5660 Machine driver");
MODULE_AUTHOR("[email protected]");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("SND_SOC_INTEL_HDA_DSP_COMMON");