Unverified Commit 4302187d authored by Trevor Wu's avatar Trevor Wu Committed by Mark Brown
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ASoC: mediatek: common: add soundcard driver common code 



Add common code to support of_node of codec parsing, so codec phandle
can be assigned by sound-dai in dts.

Signed-off-by: default avatarTrevor Wu <trevor.wu@mediatek.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230116034131.23943-12-trevor.wu@mediatek.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 692d25b6

sound/soc/mediatek/common/Makefile

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# SPDX-License-Identifier: GPL-2.0

# platform driver

snd-soc-mtk-common-objs := mtk-afe-platform-driver.o mtk-afe-fe-dai.o mtk-dsp-sof-common.o

snd-soc-mtk-common-objs := mtk-afe-platform-driver.o mtk-afe-fe-dai.o mtk-dsp-sof-common.o mtk-soundcard-driver.o

obj-$(CONFIG_SND_SOC_MEDIATEK) += snd-soc-mtk-common.o



obj-$(CONFIG_SND_SOC_MTK_BTCVSD) += mtk-btcvsd.o

sound/soc/mediatek/common/mtk-soundcard-driver.c

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// SPDX-License-Identifier: GPL-2.0

/*

 * mtk-soundcard-driver.c  --  MediaTek soundcard driver common

 *

 * Copyright (c) 2022 MediaTek Inc.

 * Author: Trevor Wu <trevor.wu@mediatek.com>

 */



#include <linux/module.h>

#include <linux/of.h>

#include <sound/soc.h>



#include "mtk-soundcard-driver.h"



static int set_card_codec_info(struct snd_soc_card *card,

			       struct device_node *sub_node,

			       struct snd_soc_dai_link *dai_link)

{

	struct device *dev = card->dev;

	struct device_node *codec_node;

	int ret;



	codec_node = of_get_child_by_name(sub_node, "codec");

	if (!codec_node)

		return -EINVAL;



	/* set card codec info */

	ret = snd_soc_of_get_dai_link_codecs(dev, codec_node, dai_link);



	of_node_put(codec_node);



	if (ret < 0)

		return dev_err_probe(dev, ret, "%s: codec dai not found\n",

				     dai_link->name);



	return 0;

}



int parse_dai_link_info(struct snd_soc_card *card)

{

	struct device *dev = card->dev;

	struct device_node *sub_node;

	struct snd_soc_dai_link *dai_link;

	const char *dai_link_name;

	int ret, i;



	/* Loop over all the dai link sub nodes */

	for_each_available_child_of_node(dev->of_node, sub_node) {

		if (of_property_read_string(sub_node, "link-name",

					    &dai_link_name))

			return -EINVAL;



		for_each_card_prelinks(card, i, dai_link) {

			if (!strcmp(dai_link_name, dai_link->name))

				break;

		}



		if (i >= card->num_links)

			return -EINVAL;



		ret = set_card_codec_info(card, sub_node, dai_link);

		if (ret < 0)

			return ret;

	}



	return 0;

}

EXPORT_SYMBOL_GPL(parse_dai_link_info);



void clean_card_reference(struct snd_soc_card *card)

{

	struct snd_soc_dai_link *dai_link;

	int i;



	/* release codec reference gotten by set_card_codec_info */

	for_each_card_prelinks(card, i, dai_link)

		snd_soc_of_put_dai_link_codecs(dai_link);

}

EXPORT_SYMBOL_GPL(clean_card_reference);

sound/soc/mediatek/common/mtk-soundcard-driver.h

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

/*

 * mtk-soundcard-driver.h  --  MediaTek soundcard driver common definition

 *

 * Copyright (c) 2022 MediaTek Inc.

 * Author: Trevor Wu <trevor.wu@mediatek.com>

 */



#ifndef _MTK_SOUNDCARD_DRIVER_H_

#define _MTK_SOUNDCARD_DRIVER_H_



int parse_dai_link_info(struct snd_soc_card *card);

void clean_card_reference(struct snd_soc_card *card);

#endif