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

 // SPDX-License-Identifier: GPL-2.0-only
 //
 // Copyright(c) 2023 Intel Corporation. All rights reserved.

 #include <sound/soc.h>
 #include "../common/soc-intel-quirks.h"
 #include "hda_dsp_common.h"
 #include "sof_board_helpers.h"

 /*
  * Intel HDMI DAI Link
  */
 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);

 	ctx->hdmi.hdmi_comp = dai->component;

 	return 0;
 }

 int sof_intel_board_card_late_probe(struct snd_soc_card *card)
 {
 	struct sof_card_private *ctx = snd_soc_card_get_drvdata(card);

 	if (!ctx->hdmi_num)
 		return 0;

 	if (!ctx->hdmi.idisp_codec)
 		return 0;

 	if (!ctx->hdmi.hdmi_comp)
 		return -EINVAL;

 	return hda_dsp_hdmi_build_controls(card, ctx->hdmi.hdmi_comp);
 }
 EXPORT_SYMBOL_NS(sof_intel_board_card_late_probe, SND_SOC_INTEL_SOF_BOARD_HELPERS);

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

 static const struct snd_soc_dapm_route dmic_routes[] = {
 	{"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(rtd->dev, "fail to add dmic widgets, ret %d\n", ret);
 		return ret;
 	}

 	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_routes,
 				      ARRAY_SIZE(dmic_routes));
 	if (ret) {
 		dev_err(rtd->dev, "fail to add dmic routes, ret %d\n", ret);
 		return ret;
 	}

 	return 0;
 }

 /*
  * DAI Link Helpers
  */
 static struct snd_soc_dai_link_component dmic_component[] = {
 	{
 		.name = "dmic-codec",
 		.dai_name = "dmic-hifi",
 	}
 };

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

 int sof_intel_board_set_codec_link(struct device *dev,
 				   struct snd_soc_dai_link *link, int be_id,
 				   enum sof_ssp_codec codec_type, int ssp_codec)
 {
 	struct snd_soc_dai_link_component *cpus;

 	dev_dbg(dev, "link %d: codec %s, ssp %d\n", be_id,
 		sof_ssp_get_codec_name(codec_type), ssp_codec);

 	/* link name */
 	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_codec);
 	if (!link->name)
 		return -ENOMEM;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	if (soc_intel_is_byt() || soc_intel_is_cht()) {
 		/* backward-compatibility for BYT/CHT boards */
 		cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssp%d-port",
 						ssp_codec);
 	} else {
 		cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin",
 						ssp_codec);
 	}
 	if (!cpus->dai_name)
 		return -ENOMEM;

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs - caller to handle */

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	link->no_pcm = 1;
 	link->dpcm_capture = 1;
 	link->dpcm_playback = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_codec_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 int sof_intel_board_set_dmic_link(struct device *dev,
 				  struct snd_soc_dai_link *link, int be_id,
 				  enum sof_dmic_be_type be_type)
 {
 	struct snd_soc_dai_link_component *cpus;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	switch (be_type) {
 	case SOF_DMIC_01:
 		dev_dbg(dev, "link %d: dmic01\n", be_id);

 		link->name = "dmic01";
 		cpus->dai_name = "DMIC01 Pin";
 		break;
 	case SOF_DMIC_16K:
 		dev_dbg(dev, "link %d: dmic16k\n", be_id);

 		link->name = "dmic16k";
 		cpus->dai_name = "DMIC16k Pin";
 		break;
 	default:
 		dev_err(dev, "invalid be type %d\n", be_type);
 		return -EINVAL;
 	}

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs */
 	link->codecs = dmic_component;
 	link->num_codecs = ARRAY_SIZE(dmic_component);

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	if (be_type == SOF_DMIC_01)
 		link->init = dmic_init;
 	link->ignore_suspend = 1;
 	link->no_pcm = 1;
 	link->dpcm_capture = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_dmic_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 int sof_intel_board_set_intel_hdmi_link(struct device *dev,
 					struct snd_soc_dai_link *link, int be_id,
 					int hdmi_id, bool idisp_codec)
 {
 	struct snd_soc_dai_link_component *cpus, *codecs;

 	dev_dbg(dev, "link %d: intel hdmi, hdmi id %d, idisp codec %d\n",
 		be_id, hdmi_id, idisp_codec);

 	/* link name */
 	link->name = devm_kasprintf(dev, GFP_KERNEL, "iDisp%d", hdmi_id);
 	if (!link->name)
 		return -ENOMEM;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "iDisp%d Pin", hdmi_id);
 	if (!cpus->dai_name)
 		return -ENOMEM;

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs */
 	if (idisp_codec) {
 		codecs = devm_kzalloc(dev,
 				      sizeof(struct snd_soc_dai_link_component),
 				      GFP_KERNEL);
 		if (!codecs)
 			return -ENOMEM;

 		codecs->name = "ehdaudio0D2";
 		codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL,
 						  "intel-hdmi-hifi%d", hdmi_id);
 		if (!codecs->dai_name)
 			return -ENOMEM;

 		link->codecs = codecs;
 	} else {
 		link->codecs = &snd_soc_dummy_dlc;
 	}
 	link->num_codecs = 1;

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	link->init = (hdmi_id == 1) ? hdmi_init : NULL;
 	link->no_pcm = 1;
 	link->dpcm_playback = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_intel_hdmi_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 int sof_intel_board_set_ssp_amp_link(struct device *dev,
 				     struct snd_soc_dai_link *link, int be_id,
 				     enum sof_ssp_codec amp_type, int ssp_amp)
 {
 	struct snd_soc_dai_link_component *cpus;

 	dev_dbg(dev, "link %d: ssp amp %s, ssp %d\n", be_id,
 		sof_ssp_get_codec_name(amp_type), ssp_amp);

 	/* link name */
 	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_amp);
 	if (!link->name)
 		return -ENOMEM;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_amp);
 	if (!cpus->dai_name)
 		return -ENOMEM;

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs - caller to handle */

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	link->no_pcm = 1;
 	link->dpcm_capture = 1; /* feedback stream or firmware-generated echo reference */
 	link->dpcm_playback = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_ssp_amp_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 int sof_intel_board_set_bt_link(struct device *dev,
 				struct snd_soc_dai_link *link, int be_id,
 				int ssp_bt)
 {
 	struct snd_soc_dai_link_component *cpus;

 	dev_dbg(dev, "link %d: bt offload, ssp %d\n", be_id, ssp_bt);

 	/* link name */
 	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-BT", ssp_bt);
 	if (!link->name)
 		return -ENOMEM;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_bt);
 	if (!cpus->dai_name)
 		return -ENOMEM;

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs */
 	link->codecs = &snd_soc_dummy_dlc;
 	link->num_codecs = 1;

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	link->no_pcm = 1;
 	link->dpcm_capture = 1;
 	link->dpcm_playback = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_bt_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 int sof_intel_board_set_hdmi_in_link(struct device *dev,
 				     struct snd_soc_dai_link *link, int be_id,
 				     int ssp_hdmi)
 {
 	struct snd_soc_dai_link_component *cpus;

 	dev_dbg(dev, "link %d: hdmi-in, ssp %d\n", be_id, ssp_hdmi);

 	/* link name */
 	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-HDMI", ssp_hdmi);
 	if (!link->name)
 		return -ENOMEM;

 	/* cpus */
 	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
 			    GFP_KERNEL);
 	if (!cpus)
 		return -ENOMEM;

 	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_hdmi);
 	if (!cpus->dai_name)
 		return -ENOMEM;

 	link->cpus = cpus;
 	link->num_cpus = 1;

 	/* codecs */
 	link->codecs = &snd_soc_dummy_dlc;
 	link->num_codecs = 1;

 	/* platforms */
 	link->platforms = platform_component;
 	link->num_platforms = ARRAY_SIZE(platform_component);

 	link->id = be_id;
 	link->no_pcm = 1;
 	link->dpcm_capture = 1;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_hdmi_in_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 static int calculate_num_links(struct sof_card_private *ctx)
 {
 	int num_links = 0;

 	/* headphone codec */
 	if (ctx->codec_type != CODEC_NONE)
 		num_links++;

 	/* dmic01 and dmic16k */
 	if (ctx->dmic_be_num > 0)
 		num_links++;

 	if (ctx->dmic_be_num > 1)
 		num_links++;

 	/* idisp HDMI */
 	num_links += ctx->hdmi_num;

 	/* speaker amp */
 	if (ctx->amp_type != CODEC_NONE)
 		num_links++;

 	/* BT audio offload */
 	if (ctx->bt_offload_present)
 		num_links++;

 	/* HDMI-In */
 	num_links += hweight32(ctx->ssp_mask_hdmi_in);

 	return num_links;
 }

 int sof_intel_board_set_dai_link(struct device *dev, struct snd_soc_card *card,
 				 struct sof_card_private *ctx)
 {
 	struct snd_soc_dai_link *links;
 	int num_links;
 	int i;
 	int idx = 0;
 	int ret;
 	int ssp_hdmi_in = 0;

 	num_links = calculate_num_links(ctx);

 	links = devm_kcalloc(dev, num_links, sizeof(struct snd_soc_dai_link),
 			     GFP_KERNEL);
 	if (!links)
 		return -ENOMEM;

 	/* headphone codec */
 	if (ctx->codec_type != CODEC_NONE) {
 		ret = sof_intel_board_set_codec_link(dev, &links[idx], idx,
 						     ctx->codec_type,
 						     ctx->ssp_codec);
 		if (ret) {
 			dev_err(dev, "fail to set codec link, ret %d\n", ret);
 			return ret;
 		}

 		ctx->codec_link = &links[idx];
 		idx++;
 	}

 	/* dmic01 and dmic16k */
 	if (ctx->dmic_be_num > 0) {
 		/* at least we have dmic01 */
 		ret = sof_intel_board_set_dmic_link(dev, &links[idx], idx,
 						    SOF_DMIC_01);
 		if (ret) {
 			dev_err(dev, "fail to set dmic01 link, ret %d\n", ret);
 			return ret;
 		}

 		idx++;
 	}

 	if (ctx->dmic_be_num > 1) {
 		/* set up 2 BE links at most */
 		ret = sof_intel_board_set_dmic_link(dev, &links[idx], idx,
 						    SOF_DMIC_16K);
 		if (ret) {
 			dev_err(dev, "fail to set dmic16k link, ret %d\n", ret);
 			return ret;
 		}

 		idx++;
 	}

 	/* idisp HDMI */
 	for (i = 1; i <= ctx->hdmi_num; i++) {
 		ret = sof_intel_board_set_intel_hdmi_link(dev, &links[idx], idx,
 							  i,
 							  ctx->hdmi.idisp_codec);
 		if (ret) {
 			dev_err(dev, "fail to set hdmi link, ret %d\n", ret);
 			return ret;
 		}

 		idx++;
 	}

 	/* speaker amp */
 	if (ctx->amp_type != CODEC_NONE) {
 		ret = sof_intel_board_set_ssp_amp_link(dev, &links[idx], idx,
 						       ctx->amp_type,
 						       ctx->ssp_amp);
 		if (ret) {
 			dev_err(dev, "fail to set amp link, ret %d\n", ret);
 			return ret;
 		}

 		ctx->amp_link = &links[idx];
 		idx++;
 	}

 	/* BT audio offload */
 	if (ctx->bt_offload_present) {
 		ret = sof_intel_board_set_bt_link(dev, &links[idx], idx,
 						  ctx->ssp_bt);
 		if (ret) {
 			dev_err(dev, "fail to set bt link, ret %d\n", ret);
 			return ret;
 		}

 		idx++;
 	}

 	/* HDMI-In */
 	for_each_set_bit(ssp_hdmi_in, &ctx->ssp_mask_hdmi_in, 32) {
 		ret = sof_intel_board_set_hdmi_in_link(dev, &links[idx], idx,
 						       ssp_hdmi_in);
 		if (ret) {
 			dev_err(dev, "fail to set hdmi-in link, ret %d\n", ret);
 			return ret;
 		}

 		idx++;
 	}

 	if (idx != num_links) {
 		dev_err(dev, "link number mismatch, idx %d, num_links %d\n", idx,
 			num_links);
 		return -EINVAL;
 	}

 	card->dai_link = links;
 	card->num_links = num_links;

 	return 0;
 }
 EXPORT_SYMBOL_NS(sof_intel_board_set_dai_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

 MODULE_DESCRIPTION("ASoC Intel SOF Machine Driver Board Helpers");
 MODULE_AUTHOR("Brent Lu <brent.lu@intel.com>");
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS(SND_SOC_INTEL_HDA_DSP_COMMON);
 MODULE_IMPORT_NS(SND_SOC_INTEL_SOF_SSP_COMMON);
	// SPDX-License-Identifier: GPL-2.0-only
	//
	// Copyright(c) 2023 Intel Corporation. All rights reserved.

	#include <sound/soc.h>
	#include "../common/soc-intel-quirks.h"
	#include "hda_dsp_common.h"
	#include "sof_board_helpers.h"

	/*
	* Intel HDMI DAI Link
	*/
	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);

	ctx->hdmi.hdmi_comp = dai->component;

	return 0;
	}

	int sof_intel_board_card_late_probe(struct snd_soc_card *card)
	{
	struct sof_card_private *ctx = snd_soc_card_get_drvdata(card);

	if (!ctx->hdmi_num)
	return 0;

	if (!ctx->hdmi.idisp_codec)
	return 0;

	if (!ctx->hdmi.hdmi_comp)
	return -EINVAL;

	return hda_dsp_hdmi_build_controls(card, ctx->hdmi.hdmi_comp);
	}
	EXPORT_SYMBOL_NS(sof_intel_board_card_late_probe, SND_SOC_INTEL_SOF_BOARD_HELPERS);

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

	static const struct snd_soc_dapm_route dmic_routes[] = {
	{"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(rtd->dev, "fail to add dmic widgets, ret %d\n", ret);
	return ret;
	}

	ret = snd_soc_dapm_add_routes(&card->dapm, dmic_routes,
	ARRAY_SIZE(dmic_routes));
	if (ret) {
	dev_err(rtd->dev, "fail to add dmic routes, ret %d\n", ret);
	return ret;
	}

	return 0;
	}

	/*
	* DAI Link Helpers
	*/
	static struct snd_soc_dai_link_component dmic_component[] = {
	{
	.name = "dmic-codec",
	.dai_name = "dmic-hifi",
	}
	};

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

	int sof_intel_board_set_codec_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	enum sof_ssp_codec codec_type, int ssp_codec)
	{
	struct snd_soc_dai_link_component *cpus;

	dev_dbg(dev, "link %d: codec %s, ssp %d\n", be_id,
	sof_ssp_get_codec_name(codec_type), ssp_codec);

	/* link name */
	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_codec);
	if (!link->name)
	return -ENOMEM;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	if (soc_intel_is_byt() \|\| soc_intel_is_cht()) {
	/* backward-compatibility for BYT/CHT boards */
	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "ssp%d-port",
	ssp_codec);
	} else {
	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin",
	ssp_codec);
	}
	if (!cpus->dai_name)
	return -ENOMEM;

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs - caller to handle */

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	link->no_pcm = 1;
	link->dpcm_capture = 1;
	link->dpcm_playback = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_codec_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	int sof_intel_board_set_dmic_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	enum sof_dmic_be_type be_type)
	{
	struct snd_soc_dai_link_component *cpus;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	switch (be_type) {
	case SOF_DMIC_01:
	dev_dbg(dev, "link %d: dmic01\n", be_id);

	link->name = "dmic01";
	cpus->dai_name = "DMIC01 Pin";
	break;
	case SOF_DMIC_16K:
	dev_dbg(dev, "link %d: dmic16k\n", be_id);

	link->name = "dmic16k";
	cpus->dai_name = "DMIC16k Pin";
	break;
	default:
	dev_err(dev, "invalid be type %d\n", be_type);
	return -EINVAL;
	}

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs */
	link->codecs = dmic_component;
	link->num_codecs = ARRAY_SIZE(dmic_component);

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	if (be_type == SOF_DMIC_01)
	link->init = dmic_init;
	link->ignore_suspend = 1;
	link->no_pcm = 1;
	link->dpcm_capture = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_dmic_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	int sof_intel_board_set_intel_hdmi_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	int hdmi_id, bool idisp_codec)
	{
	struct snd_soc_dai_link_component cpus, codecs;

	dev_dbg(dev, "link %d: intel hdmi, hdmi id %d, idisp codec %d\n",
	be_id, hdmi_id, idisp_codec);

	/* link name */
	link->name = devm_kasprintf(dev, GFP_KERNEL, "iDisp%d", hdmi_id);
	if (!link->name)
	return -ENOMEM;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "iDisp%d Pin", hdmi_id);
	if (!cpus->dai_name)
	return -ENOMEM;

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs */
	if (idisp_codec) {
	codecs = devm_kzalloc(dev,
	sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!codecs)
	return -ENOMEM;

	codecs->name = "ehdaudio0D2";
	codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL,
	"intel-hdmi-hifi%d", hdmi_id);
	if (!codecs->dai_name)
	return -ENOMEM;

	link->codecs = codecs;
	} else {
	link->codecs = &snd_soc_dummy_dlc;
	}
	link->num_codecs = 1;

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	link->init = (hdmi_id == 1) ? hdmi_init : NULL;
	link->no_pcm = 1;
	link->dpcm_playback = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_intel_hdmi_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	int sof_intel_board_set_ssp_amp_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	enum sof_ssp_codec amp_type, int ssp_amp)
	{
	struct snd_soc_dai_link_component *cpus;

	dev_dbg(dev, "link %d: ssp amp %s, ssp %d\n", be_id,
	sof_ssp_get_codec_name(amp_type), ssp_amp);

	/* link name */
	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_amp);
	if (!link->name)
	return -ENOMEM;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_amp);
	if (!cpus->dai_name)
	return -ENOMEM;

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs - caller to handle */

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	link->no_pcm = 1;
	link->dpcm_capture = 1; /* feedback stream or firmware-generated echo reference */
	link->dpcm_playback = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_ssp_amp_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	int sof_intel_board_set_bt_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	int ssp_bt)
	{
	struct snd_soc_dai_link_component *cpus;

	dev_dbg(dev, "link %d: bt offload, ssp %d\n", be_id, ssp_bt);

	/* link name */
	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-BT", ssp_bt);
	if (!link->name)
	return -ENOMEM;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_bt);
	if (!cpus->dai_name)
	return -ENOMEM;

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs */
	link->codecs = &snd_soc_dummy_dlc;
	link->num_codecs = 1;

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	link->no_pcm = 1;
	link->dpcm_capture = 1;
	link->dpcm_playback = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_bt_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	int sof_intel_board_set_hdmi_in_link(struct device *dev,
	struct snd_soc_dai_link *link, int be_id,
	int ssp_hdmi)
	{
	struct snd_soc_dai_link_component *cpus;

	dev_dbg(dev, "link %d: hdmi-in, ssp %d\n", be_id, ssp_hdmi);

	/* link name */
	link->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-HDMI", ssp_hdmi);
	if (!link->name)
	return -ENOMEM;

	/* cpus */
	cpus = devm_kzalloc(dev, sizeof(struct snd_soc_dai_link_component),
	GFP_KERNEL);
	if (!cpus)
	return -ENOMEM;

	cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_hdmi);
	if (!cpus->dai_name)
	return -ENOMEM;

	link->cpus = cpus;
	link->num_cpus = 1;

	/* codecs */
	link->codecs = &snd_soc_dummy_dlc;
	link->num_codecs = 1;

	/* platforms */
	link->platforms = platform_component;
	link->num_platforms = ARRAY_SIZE(platform_component);

	link->id = be_id;
	link->no_pcm = 1;
	link->dpcm_capture = 1;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_hdmi_in_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	static int calculate_num_links(struct sof_card_private *ctx)
	{
	int num_links = 0;

	/* headphone codec */
	if (ctx->codec_type != CODEC_NONE)
	num_links++;

	/* dmic01 and dmic16k */
	if (ctx->dmic_be_num > 0)
	num_links++;

	if (ctx->dmic_be_num > 1)
	num_links++;

	/* idisp HDMI */
	num_links += ctx->hdmi_num;

	/* speaker amp */
	if (ctx->amp_type != CODEC_NONE)
	num_links++;

	/* BT audio offload */
	if (ctx->bt_offload_present)
	num_links++;

	/* HDMI-In */
	num_links += hweight32(ctx->ssp_mask_hdmi_in);

	return num_links;
	}

	int sof_intel_board_set_dai_link(struct device dev, struct snd_soc_card card,
	struct sof_card_private *ctx)
	{
	struct snd_soc_dai_link *links;
	int num_links;
	int i;
	int idx = 0;
	int ret;
	int ssp_hdmi_in = 0;

	num_links = calculate_num_links(ctx);

	links = devm_kcalloc(dev, num_links, sizeof(struct snd_soc_dai_link),
	GFP_KERNEL);
	if (!links)
	return -ENOMEM;

	/* headphone codec */
	if (ctx->codec_type != CODEC_NONE) {
	ret = sof_intel_board_set_codec_link(dev, &links[idx], idx,
	ctx->codec_type,
	ctx->ssp_codec);
	if (ret) {
	dev_err(dev, "fail to set codec link, ret %d\n", ret);
	return ret;
	}

	ctx->codec_link = &links[idx];
	idx++;
	}

	/* dmic01 and dmic16k */
	if (ctx->dmic_be_num > 0) {
	/* at least we have dmic01 */
	ret = sof_intel_board_set_dmic_link(dev, &links[idx], idx,
	SOF_DMIC_01);
	if (ret) {
	dev_err(dev, "fail to set dmic01 link, ret %d\n", ret);
	return ret;
	}

	idx++;
	}

	if (ctx->dmic_be_num > 1) {
	/* set up 2 BE links at most */
	ret = sof_intel_board_set_dmic_link(dev, &links[idx], idx,
	SOF_DMIC_16K);
	if (ret) {
	dev_err(dev, "fail to set dmic16k link, ret %d\n", ret);
	return ret;
	}

	idx++;
	}

	/* idisp HDMI */
	for (i = 1; i <= ctx->hdmi_num; i++) {
	ret = sof_intel_board_set_intel_hdmi_link(dev, &links[idx], idx,
	i,
	ctx->hdmi.idisp_codec);
	if (ret) {
	dev_err(dev, "fail to set hdmi link, ret %d\n", ret);
	return ret;
	}

	idx++;
	}

	/* speaker amp */
	if (ctx->amp_type != CODEC_NONE) {
	ret = sof_intel_board_set_ssp_amp_link(dev, &links[idx], idx,
	ctx->amp_type,
	ctx->ssp_amp);
	if (ret) {
	dev_err(dev, "fail to set amp link, ret %d\n", ret);
	return ret;
	}

	ctx->amp_link = &links[idx];
	idx++;
	}

	/* BT audio offload */
	if (ctx->bt_offload_present) {
	ret = sof_intel_board_set_bt_link(dev, &links[idx], idx,
	ctx->ssp_bt);
	if (ret) {
	dev_err(dev, "fail to set bt link, ret %d\n", ret);
	return ret;
	}

	idx++;
	}

	/* HDMI-In */
	for_each_set_bit(ssp_hdmi_in, &ctx->ssp_mask_hdmi_in, 32) {
	ret = sof_intel_board_set_hdmi_in_link(dev, &links[idx], idx,
	ssp_hdmi_in);
	if (ret) {
	dev_err(dev, "fail to set hdmi-in link, ret %d\n", ret);
	return ret;
	}

	idx++;
	}

	if (idx != num_links) {
	dev_err(dev, "link number mismatch, idx %d, num_links %d\n", idx,
	num_links);
	return -EINVAL;
	}

	card->dai_link = links;
	card->num_links = num_links;

	return 0;
	}
	EXPORT_SYMBOL_NS(sof_intel_board_set_dai_link, SND_SOC_INTEL_SOF_BOARD_HELPERS);

	MODULE_DESCRIPTION("ASoC Intel SOF Machine Driver Board Helpers");
	MODULE_AUTHOR("Brent Lu <brent.lu@intel.com>");
	MODULE_LICENSE("GPL");
	MODULE_IMPORT_NS(SND_SOC_INTEL_HDA_DSP_COMMON);
	MODULE_IMPORT_NS(SND_SOC_INTEL_SOF_SSP_COMMON);