sound/soc/intel/boards/sof_pcm512x.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 // Copyright(c) 2018-2020 Intel Corporation.

 /*
  * Intel SOF Machine Driver for Intel platforms with TI PCM512x codec,
  * e.g. Up or Up2 with Hifiberry DAC+ HAT
  */
 #include <linux/clk.h>
 #include <linux/dmi.h>
 #include <linux/i2c.h>
 #include <linux/input.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <sound/core.h>
 #include <sound/jack.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/soc-acpi.h>
 #include "../../codecs/pcm512x.h"
 #include "../common/soc-intel-quirks.h"
 #include "hda_dsp_common.h"

 #define NAME_SIZE 32

 #define SOF_PCM512X_SSP_CODEC(quirk)		((quirk) & GENMASK(3, 0))
 #define SOF_PCM512X_SSP_CODEC_MASK			(GENMASK(3, 0))
 #define SOF_PCM512X_ENABLE_SSP_CAPTURE		BIT(4)
 #define SOF_PCM512X_ENABLE_DMIC			BIT(5)

 #define IDISP_CODEC_MASK	0x4

 /* Default: SSP5 */
 static unsigned long sof_pcm512x_quirk =
 	SOF_PCM512X_SSP_CODEC(5) |
 	SOF_PCM512X_ENABLE_SSP_CAPTURE |
 	SOF_PCM512X_ENABLE_DMIC;

 static bool is_legacy_cpu;

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

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

 static int sof_pcm512x_quirk_cb(const struct dmi_system_id *id)
 {
 	sof_pcm512x_quirk = (unsigned long)id->driver_data;
 	return 1;
 }

 static const struct dmi_system_id sof_pcm512x_quirk_table[] = {
 	{
 		.callback = sof_pcm512x_quirk_cb,
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "UP-CHT01"),
 		},
 		.driver_data = (void *)(SOF_PCM512X_SSP_CODEC(2)),
 	},
 	{}
 };

 static int sof_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 = asoc_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 sof_pcm512x_codec_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

 	snd_soc_component_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
 	snd_soc_component_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
 	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
 				      0x08, 0x08);

 	return 0;
 }

 static int aif1_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

 	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
 				      0x08, 0x08);

 	return 0;
 }

 static void aif1_shutdown(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
 	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

 	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
 				      0x08, 0x00);
 }

 static const struct snd_soc_ops sof_pcm512x_ops = {
 	.startup = aif1_startup,
 	.shutdown = aif1_shutdown,
 };

 static struct snd_soc_dai_link_component platform_component[] = {
 	{
 		/* name might be overridden during probe */
 		.name = "0000:00:1f.3"
 	}
 };

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

 	/* HDMI is not supported by SOF on Baytrail/CherryTrail */
 	if (is_legacy_cpu)
 		return 0;

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

 	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 const struct snd_kcontrol_new sof_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Ext Spk"),
 };

 static const struct snd_soc_dapm_widget sof_widgets[] = {
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 };

 static const struct snd_soc_dapm_widget dmic_widgets[] = {
 	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
 };

 static const struct snd_soc_dapm_route sof_map[] = {
 	/* Speaker */
 	{"Ext Spk", NULL, "OUTR"},
 	{"Ext Spk", NULL, "OUTL"},
 };

 static const struct snd_soc_dapm_route dmic_map[] = {
 	/* digital mics */
 	{"DMic", NULL, "SoC DMIC"},
 };

 static int dmic_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_card *card = rtd->card;
 	int ret;

 	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
 					ARRAY_SIZE(dmic_widgets));
 	if (ret) {
 		dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
 		/* Don't need to add routes if widget addition failed */
 		return ret;
 	}

 	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
 				      ARRAY_SIZE(dmic_map));

 	if (ret)
 		dev_err(card->dev, "DMic map addition failed: %d\n", ret);

 	return ret;
 }

 /* sof audio machine driver for pcm512x codec */
 static struct snd_soc_card sof_audio_card_pcm512x = {
 	.name = "pcm512x",
 	.owner = THIS_MODULE,
 	.controls = sof_controls,
 	.num_controls = ARRAY_SIZE(sof_controls),
 	.dapm_widgets = sof_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(sof_widgets),
 	.dapm_routes = sof_map,
 	.num_dapm_routes = ARRAY_SIZE(sof_map),
 	.fully_routed = true,
 	.late_probe = sof_card_late_probe,
 };

 SND_SOC_DAILINK_DEF(pcm512x_component,
 	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-104C5122:00", "pcm512x-hifi")));
 SND_SOC_DAILINK_DEF(dmic_component,
 	DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));

 static struct snd_soc_dai_link *sof_card_dai_links_create(struct device *dev,
 							  int ssp_codec,
 							  int dmic_be_num,
 							  int hdmi_num,
 							  bool idisp_codec)
 {
 	struct snd_soc_dai_link_component *idisp_components;
 	struct snd_soc_dai_link_component *cpus;
 	struct snd_soc_dai_link *links;
 	int i, id = 0;

 	links = devm_kcalloc(dev, sof_audio_card_pcm512x.num_links,
 			sizeof(struct snd_soc_dai_link), GFP_KERNEL);
 	cpus = devm_kcalloc(dev, sof_audio_card_pcm512x.num_links,
 			sizeof(struct snd_soc_dai_link_component), GFP_KERNEL);
 	if (!links || !cpus)
 		goto devm_err;

 	/* codec SSP */
 	links[id].name = devm_kasprintf(dev, GFP_KERNEL,
 					"SSP%d-Codec", ssp_codec);
 	if (!links[id].name)
 		goto devm_err;

 	links[id].id = id;
 	links[id].codecs = pcm512x_component;
 	links[id].num_codecs = ARRAY_SIZE(pcm512x_component);
 	links[id].platforms = platform_component;
 	links[id].num_platforms = ARRAY_SIZE(platform_component);
 	links[id].init = sof_pcm512x_codec_init;
 	links[id].ops = &sof_pcm512x_ops;
 	links[id].dpcm_playback = 1;
 	/*
 	 * capture only supported with specific versions of the Hifiberry DAC+
 	 */
 	if (sof_pcm512x_quirk & SOF_PCM512X_ENABLE_SSP_CAPTURE)
 		links[id].dpcm_capture = 1;
 	links[id].no_pcm = 1;
 	links[id].cpus = &cpus[id];
 	links[id].num_cpus = 1;
 	if (is_legacy_cpu) {
 		links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
 							  "ssp%d-port",
 							  ssp_codec);
 		if (!links[id].cpus->dai_name)
 			goto devm_err;
 	} else {
 		links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
 							  "SSP%d Pin",
 							  ssp_codec);
 		if (!links[id].cpus->dai_name)
 			goto devm_err;
 	}
 	id++;

 	/* dmic */
 	if (dmic_be_num > 0) {
 		/* at least we have dmic01 */
 		links[id].name = "dmic01";
 		links[id].cpus = &cpus[id];
 		links[id].cpus->dai_name = "DMIC01 Pin";
 		links[id].init = dmic_init;
 		if (dmic_be_num > 1) {
 			/* set up 2 BE links at most */
 			links[id + 1].name = "dmic16k";
 			links[id + 1].cpus = &cpus[id + 1];
 			links[id + 1].cpus->dai_name = "DMIC16k Pin";
 			dmic_be_num = 2;
 		}
 	}

 	for (i = 0; i < dmic_be_num; i++) {
 		links[id].id = id;
 		links[id].num_cpus = 1;
 		links[id].codecs = dmic_component;
 		links[id].num_codecs = ARRAY_SIZE(dmic_component);
 		links[id].platforms = platform_component;
 		links[id].num_platforms = ARRAY_SIZE(platform_component);
 		links[id].ignore_suspend = 1;
 		links[id].dpcm_capture = 1;
 		links[id].no_pcm = 1;
 		id++;
 	}

 	/* HDMI */
 	if (hdmi_num > 0) {
 		idisp_components = devm_kcalloc(dev, hdmi_num,
 				sizeof(struct snd_soc_dai_link_component),
 				GFP_KERNEL);
 		if (!idisp_components)
 			goto devm_err;
 	}
 	for (i = 1; i <= hdmi_num; i++) {
 		links[id].name = devm_kasprintf(dev, GFP_KERNEL,
 						"iDisp%d", i);
 		if (!links[id].name)
 			goto devm_err;

 		links[id].id = id;
 		links[id].cpus = &cpus[id];
 		links[id].num_cpus = 1;
 		links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
 							  "iDisp%d Pin", i);
 		if (!links[id].cpus->dai_name)
 			goto devm_err;

 		/*
 		 * topology cannot be loaded if codec is missing, so
 		 * use the dummy codec if needed
 		 */
 		if (idisp_codec) {
 			idisp_components[i - 1].name = "ehdaudio0D2";
 			idisp_components[i - 1].dai_name =
 				devm_kasprintf(dev, GFP_KERNEL,
 					       "intel-hdmi-hifi%d", i);
 		} else {
 			idisp_components[i - 1].name = "snd-soc-dummy";
 			idisp_components[i - 1].dai_name = "snd-soc-dummy-dai";
 		}
 		if (!idisp_components[i - 1].dai_name)
 			goto devm_err;

 		links[id].codecs = &idisp_components[i - 1];
 		links[id].num_codecs = 1;
 		links[id].platforms = platform_component;
 		links[id].num_platforms = ARRAY_SIZE(platform_component);
 		links[id].init = sof_hdmi_init;
 		links[id].dpcm_playback = 1;
 		links[id].no_pcm = 1;
 		id++;
 	}

 	return links;
 devm_err:
 	return NULL;
 }

 static int sof_audio_probe(struct platform_device *pdev)
 {
 	struct snd_soc_acpi_mach *mach = pdev->dev.platform_data;
 	struct snd_soc_dai_link *dai_links;
 	struct sof_card_private *ctx;
 	int dmic_be_num, hdmi_num;
 	int ret, ssp_codec;

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

 	hdmi_num = 0;
 	if (soc_intel_is_byt() || soc_intel_is_cht()) {
 		is_legacy_cpu = true;
 		dmic_be_num = 0;
 		/* default quirk for legacy cpu */
 		sof_pcm512x_quirk = SOF_PCM512X_SSP_CODEC(2);
 	} else {
 		dmic_be_num = 2;
 		if (mach->mach_params.common_hdmi_codec_drv &&
 		    (mach->mach_params.codec_mask & IDISP_CODEC_MASK))
 			ctx->idisp_codec = true;

 		/* links are always present in topology */
 		hdmi_num = 3;
 	}

 	dmi_check_system(sof_pcm512x_quirk_table);

 	dev_dbg(&pdev->dev, "sof_pcm512x_quirk = %lx\n", sof_pcm512x_quirk);

 	ssp_codec = sof_pcm512x_quirk & SOF_PCM512X_SSP_CODEC_MASK;

 	if (!(sof_pcm512x_quirk & SOF_PCM512X_ENABLE_DMIC))
 		dmic_be_num = 0;

 	/* compute number of dai links */
 	sof_audio_card_pcm512x.num_links = 1 + dmic_be_num + hdmi_num;

 	dai_links = sof_card_dai_links_create(&pdev->dev, ssp_codec,
 					      dmic_be_num, hdmi_num,
 					      ctx->idisp_codec);
 	if (!dai_links)
 		return -ENOMEM;

 	sof_audio_card_pcm512x.dai_link = dai_links;

 	INIT_LIST_HEAD(&ctx->hdmi_pcm_list);

 	sof_audio_card_pcm512x.dev = &pdev->dev;

 	/* set platform name for each dailink */
 	ret = snd_soc_fixup_dai_links_platform_name(&sof_audio_card_pcm512x,
 						    mach->mach_params.platform);
 	if (ret)
 		return ret;

 	snd_soc_card_set_drvdata(&sof_audio_card_pcm512x, ctx);

 	return devm_snd_soc_register_card(&pdev->dev,
 					  &sof_audio_card_pcm512x);
 }

 static int sof_pcm512x_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 	struct snd_soc_component *component = NULL;

 	for_each_card_components(card, component) {
 		if (!strcmp(component->name, pcm512x_component[0].name)) {
 			snd_soc_component_set_jack(component, NULL, NULL);
 			break;
 		}
 	}

 	return 0;
 }

 static struct platform_driver sof_audio = {
 	.probe = sof_audio_probe,
 	.remove = sof_pcm512x_remove,
 	.driver = {
 		.name = "sof_pcm512x",
 		.pm = &snd_soc_pm_ops,
 	},
 };
 module_platform_driver(sof_audio)

 MODULE_DESCRIPTION("ASoC Intel(R) SOF + PCM512x Machine driver");
 MODULE_AUTHOR("Pierre-Louis Bossart");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:sof_pcm512x");
 MODULE_IMPORT_NS(SND_SOC_INTEL_HDA_DSP_COMMON);
	// SPDX-License-Identifier: GPL-2.0-only
	// Copyright(c) 2018-2020 Intel Corporation.

	/*
	* Intel SOF Machine Driver for Intel platforms with TI PCM512x codec,
	* e.g. Up or Up2 with Hifiberry DAC+ HAT
	*/
	#include <linux/clk.h>
	#include <linux/dmi.h>
	#include <linux/i2c.h>
	#include <linux/input.h>
	#include <linux/module.h>
	#include <linux/platform_device.h>
	#include <linux/types.h>
	#include <sound/core.h>
	#include <sound/jack.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>
	#include <sound/soc-acpi.h>
	#include "../../codecs/pcm512x.h"
	#include "../common/soc-intel-quirks.h"
	#include "hda_dsp_common.h"

	#define NAME_SIZE 32

	#define SOF_PCM512X_SSP_CODEC(quirk) ((quirk) & GENMASK(3, 0))
	#define SOF_PCM512X_SSP_CODEC_MASK (GENMASK(3, 0))
	#define SOF_PCM512X_ENABLE_SSP_CAPTURE BIT(4)
	#define SOF_PCM512X_ENABLE_DMIC BIT(5)

	#define IDISP_CODEC_MASK 0x4

	/* Default: SSP5 */
	static unsigned long sof_pcm512x_quirk =
	SOF_PCM512X_SSP_CODEC(5) \|
	SOF_PCM512X_ENABLE_SSP_CAPTURE \|
	SOF_PCM512X_ENABLE_DMIC;

	static bool is_legacy_cpu;

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

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

	static int sof_pcm512x_quirk_cb(const struct dmi_system_id *id)
	{
	sof_pcm512x_quirk = (unsigned long)id->driver_data;
	return 1;
	}

	static const struct dmi_system_id sof_pcm512x_quirk_table[] = {
	{
	.callback = sof_pcm512x_quirk_cb,
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
	DMI_MATCH(DMI_PRODUCT_NAME, "UP-CHT01"),
	},
	.driver_data = (void *)(SOF_PCM512X_SSP_CODEC(2)),
	},
	{}
	};

	static int sof_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 = asoc_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 sof_pcm512x_codec_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

	snd_soc_component_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
	snd_soc_component_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
	0x08, 0x08);

	return 0;
	}

	static int aif1_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
	0x08, 0x08);

	return 0;
	}

	static void aif1_shutdown(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;

	snd_soc_component_update_bits(codec, PCM512x_GPIO_CONTROL_1,
	0x08, 0x00);
	}

	static const struct snd_soc_ops sof_pcm512x_ops = {
	.startup = aif1_startup,
	.shutdown = aif1_shutdown,
	};

	static struct snd_soc_dai_link_component platform_component[] = {
	{
	/* name might be overridden during probe */
	.name = "0000:00:1f.3"
	}
	};

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

	/* HDMI is not supported by SOF on Baytrail/CherryTrail */
	if (is_legacy_cpu)
	return 0;

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

	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 const struct snd_kcontrol_new sof_controls[] = {
	SOC_DAPM_PIN_SWITCH("Ext Spk"),
	};

	static const struct snd_soc_dapm_widget sof_widgets[] = {
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	};

	static const struct snd_soc_dapm_widget dmic_widgets[] = {
	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
	};

	static const struct snd_soc_dapm_route sof_map[] = {
	/* Speaker */
	{"Ext Spk", NULL, "OUTR"},
	{"Ext Spk", NULL, "OUTL"},
	};

	static const struct snd_soc_dapm_route dmic_map[] = {
	/* digital mics */
	{"DMic", NULL, "SoC DMIC"},
	};

	static int dmic_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_card *card = rtd->card;
	int ret;

	ret = snd_soc_dapm_new_controls(&card->dapm, dmic_widgets,
	ARRAY_SIZE(dmic_widgets));
	if (ret) {
	dev_err(card->dev, "DMic widget addition failed: %d\n", ret);
	/* Don't need to add routes if widget addition failed */
	return ret;
	}

	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_map,
	ARRAY_SIZE(dmic_map));

	if (ret)
	dev_err(card->dev, "DMic map addition failed: %d\n", ret);

	return ret;
	}

	/* sof audio machine driver for pcm512x codec */
	static struct snd_soc_card sof_audio_card_pcm512x = {
	.name = "pcm512x",
	.owner = THIS_MODULE,
	.controls = sof_controls,
	.num_controls = ARRAY_SIZE(sof_controls),
	.dapm_widgets = sof_widgets,
	.num_dapm_widgets = ARRAY_SIZE(sof_widgets),
	.dapm_routes = sof_map,
	.num_dapm_routes = ARRAY_SIZE(sof_map),
	.fully_routed = true,
	.late_probe = sof_card_late_probe,
	};

	SND_SOC_DAILINK_DEF(pcm512x_component,
	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-104C5122:00", "pcm512x-hifi")));
	SND_SOC_DAILINK_DEF(dmic_component,
	DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));

	static struct snd_soc_dai_link sof_card_dai_links_create(struct device dev,
	int ssp_codec,
	int dmic_be_num,
	int hdmi_num,
	bool idisp_codec)
	{
	struct snd_soc_dai_link_component *idisp_components;
	struct snd_soc_dai_link_component *cpus;
	struct snd_soc_dai_link *links;
	int i, id = 0;

	links = devm_kcalloc(dev, sof_audio_card_pcm512x.num_links,
	sizeof(struct snd_soc_dai_link), GFP_KERNEL);
	cpus = devm_kcalloc(dev, sof_audio_card_pcm512x.num_links,
	sizeof(struct snd_soc_dai_link_component), GFP_KERNEL);
	if (!links \|\| !cpus)
	goto devm_err;

	/* codec SSP */
	links[id].name = devm_kasprintf(dev, GFP_KERNEL,
	"SSP%d-Codec", ssp_codec);
	if (!links[id].name)
	goto devm_err;

	links[id].id = id;
	links[id].codecs = pcm512x_component;
	links[id].num_codecs = ARRAY_SIZE(pcm512x_component);
	links[id].platforms = platform_component;
	links[id].num_platforms = ARRAY_SIZE(platform_component);
	links[id].init = sof_pcm512x_codec_init;
	links[id].ops = &sof_pcm512x_ops;
	links[id].dpcm_playback = 1;
	/*
	* capture only supported with specific versions of the Hifiberry DAC+
	*/
	if (sof_pcm512x_quirk & SOF_PCM512X_ENABLE_SSP_CAPTURE)
	links[id].dpcm_capture = 1;
	links[id].no_pcm = 1;
	links[id].cpus = &cpus[id];
	links[id].num_cpus = 1;
	if (is_legacy_cpu) {
	links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
	"ssp%d-port",
	ssp_codec);
	if (!links[id].cpus->dai_name)
	goto devm_err;
	} else {
	links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
	"SSP%d Pin",
	ssp_codec);
	if (!links[id].cpus->dai_name)
	goto devm_err;
	}
	id++;

	/* dmic */
	if (dmic_be_num > 0) {
	/* at least we have dmic01 */
	links[id].name = "dmic01";
	links[id].cpus = &cpus[id];
	links[id].cpus->dai_name = "DMIC01 Pin";
	links[id].init = dmic_init;
	if (dmic_be_num > 1) {
	/* set up 2 BE links at most */
	links[id + 1].name = "dmic16k";
	links[id + 1].cpus = &cpus[id + 1];
	links[id + 1].cpus->dai_name = "DMIC16k Pin";
	dmic_be_num = 2;
	}
	}

	for (i = 0; i < dmic_be_num; i++) {
	links[id].id = id;
	links[id].num_cpus = 1;
	links[id].codecs = dmic_component;
	links[id].num_codecs = ARRAY_SIZE(dmic_component);
	links[id].platforms = platform_component;
	links[id].num_platforms = ARRAY_SIZE(platform_component);
	links[id].ignore_suspend = 1;
	links[id].dpcm_capture = 1;
	links[id].no_pcm = 1;
	id++;
	}

	/* HDMI */
	if (hdmi_num > 0) {
	idisp_components = devm_kcalloc(dev, hdmi_num,
	sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!idisp_components)
	goto devm_err;
	}
	for (i = 1; i <= hdmi_num; i++) {
	links[id].name = devm_kasprintf(dev, GFP_KERNEL,
	"iDisp%d", i);
	if (!links[id].name)
	goto devm_err;

	links[id].id = id;
	links[id].cpus = &cpus[id];
	links[id].num_cpus = 1;
	links[id].cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL,
	"iDisp%d Pin", i);
	if (!links[id].cpus->dai_name)
	goto devm_err;

	/*
	* topology cannot be loaded if codec is missing, so
	* use the dummy codec if needed
	*/
	if (idisp_codec) {
	idisp_components[i - 1].name = "ehdaudio0D2";
	idisp_components[i - 1].dai_name =
	devm_kasprintf(dev, GFP_KERNEL,
	"intel-hdmi-hifi%d", i);
	} else {
	idisp_components[i - 1].name = "snd-soc-dummy";
	idisp_components[i - 1].dai_name = "snd-soc-dummy-dai";
	}
	if (!idisp_components[i - 1].dai_name)
	goto devm_err;

	links[id].codecs = &idisp_components[i - 1];
	links[id].num_codecs = 1;
	links[id].platforms = platform_component;
	links[id].num_platforms = ARRAY_SIZE(platform_component);
	links[id].init = sof_hdmi_init;
	links[id].dpcm_playback = 1;
	links[id].no_pcm = 1;
	id++;
	}

	return links;
	devm_err:
	return NULL;
	}

	static int sof_audio_probe(struct platform_device *pdev)
	{
	struct snd_soc_acpi_mach *mach = pdev->dev.platform_data;
	struct snd_soc_dai_link *dai_links;
	struct sof_card_private *ctx;
	int dmic_be_num, hdmi_num;
	int ret, ssp_codec;

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

	hdmi_num = 0;
	if (soc_intel_is_byt() \|\| soc_intel_is_cht()) {
	is_legacy_cpu = true;
	dmic_be_num = 0;
	/* default quirk for legacy cpu */
	sof_pcm512x_quirk = SOF_PCM512X_SSP_CODEC(2);
	} else {
	dmic_be_num = 2;
	if (mach->mach_params.common_hdmi_codec_drv &&
	(mach->mach_params.codec_mask & IDISP_CODEC_MASK))
	ctx->idisp_codec = true;

	/* links are always present in topology */
	hdmi_num = 3;
	}

	dmi_check_system(sof_pcm512x_quirk_table);

	dev_dbg(&pdev->dev, "sof_pcm512x_quirk = %lx\n", sof_pcm512x_quirk);

	ssp_codec = sof_pcm512x_quirk & SOF_PCM512X_SSP_CODEC_MASK;

	if (!(sof_pcm512x_quirk & SOF_PCM512X_ENABLE_DMIC))
	dmic_be_num = 0;

	/* compute number of dai links */
	sof_audio_card_pcm512x.num_links = 1 + dmic_be_num + hdmi_num;

	dai_links = sof_card_dai_links_create(&pdev->dev, ssp_codec,
	dmic_be_num, hdmi_num,
	ctx->idisp_codec);
	if (!dai_links)
	return -ENOMEM;

	sof_audio_card_pcm512x.dai_link = dai_links;

	INIT_LIST_HEAD(&ctx->hdmi_pcm_list);

	sof_audio_card_pcm512x.dev = &pdev->dev;

	/* set platform name for each dailink */
	ret = snd_soc_fixup_dai_links_platform_name(&sof_audio_card_pcm512x,
	mach->mach_params.platform);
	if (ret)
	return ret;

	snd_soc_card_set_drvdata(&sof_audio_card_pcm512x, ctx);

	return devm_snd_soc_register_card(&pdev->dev,
	&sof_audio_card_pcm512x);
	}

	static int sof_pcm512x_remove(struct platform_device *pdev)
	{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct snd_soc_component *component = NULL;

	for_each_card_components(card, component) {
	if (!strcmp(component->name, pcm512x_component[0].name)) {
	snd_soc_component_set_jack(component, NULL, NULL);
	break;
	}
	}

	return 0;
	}

	static struct platform_driver sof_audio = {
	.probe = sof_audio_probe,
	.remove = sof_pcm512x_remove,
	.driver = {
	.name = "sof_pcm512x",
	.pm = &snd_soc_pm_ops,
	},
	};
	module_platform_driver(sof_audio)

	MODULE_DESCRIPTION("ASoC Intel(R) SOF + PCM512x Machine driver");
	MODULE_AUTHOR("Pierre-Louis Bossart");
	MODULE_LICENSE("GPL v2");
	MODULE_ALIAS("platform:sof_pcm512x");
	MODULE_IMPORT_NS(SND_SOC_INTEL_HDA_DSP_COMMON);