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Commit 3a642915 authored by Seungwhan Youn's avatar Seungwhan Youn Committed by Mark Brown
Browse files

ASoC: spdif: Add codec driver to use spdif stand-alone 



This patch adds spdif dummy codec driver for using spdif-dit as
a stand-alone. Until this, spdif-dit can be used only with other
codecs like tlv320aci3x in davinci platform.

Signed-off-by: default avatarSeungwhan Youn <sw.youn@samsung.com>
Acked-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent e37c83c0

sound/soc/codecs/spdif_transciever.c

+92 −1
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/moduleparam.h>

#include <sound/soc.h>

#include <sound/pcm.h>

#include <sound/initval.h>



#include "spdif_transciever.h"
@@ -26,6 +27,48 @@ MODULE_LICENSE("GPL"); 
#define STUB_RATES	SNDRV_PCM_RATE_8000_96000

#define STUB_FORMATS	SNDRV_PCM_FMTBIT_S16_LE



static struct snd_soc_codec *spdif_dit_codec;



static int spdif_dit_codec_probe(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);

	struct snd_soc_codec *codec;

	int ret;



	if (spdif_dit_codec == NULL) {

		dev_err(&pdev->dev, "Codec device not registered\n");

		return -ENODEV;

	}



	socdev->card->codec = spdif_dit_codec;

	codec = spdif_dit_codec;



	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);

	if (ret < 0) {

		dev_err(codec->dev, "failed to create pcms: %d\n", ret);

		goto err_create_pcms;

	}



	return 0;



err_create_pcms:

	return ret;

}



static int spdif_dit_codec_remove(struct platform_device *pdev)

{

	struct snd_soc_device *socdev = platform_get_drvdata(pdev);



	snd_soc_free_pcms(socdev);



	return 0;

}



struct snd_soc_codec_device soc_codec_dev_spdif_dit = {

	.probe		= spdif_dit_codec_probe,

	.remove		= spdif_dit_codec_remove,

}; EXPORT_SYMBOL_GPL(soc_codec_dev_spdif_dit);



struct snd_soc_dai dit_stub_dai = {

	.name		= "DIT",

	.playback 	= {
@@ -40,13 +83,61 @@ EXPORT_SYMBOL_GPL(dit_stub_dai); 


static int spdif_dit_probe(struct platform_device *pdev)

{

	struct snd_soc_codec *codec;

	int ret;



	if (spdif_dit_codec) {

		dev_err(&pdev->dev, "Another Codec is registered\n");

		ret = -EINVAL;

		goto err_reg_codec;

	}



	codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);

	if (codec == NULL)

		return -ENOMEM;



	codec->dev = &pdev->dev;



	mutex_init(&codec->mutex);



	INIT_LIST_HEAD(&codec->dapm_widgets);

	INIT_LIST_HEAD(&codec->dapm_paths);



	codec->name = "spdif-dit";

	codec->owner = THIS_MODULE;

	codec->dai = &dit_stub_dai;

	codec->num_dai = 1;



	spdif_dit_codec = codec;



	ret = snd_soc_register_codec(codec);

	if (ret < 0) {

		dev_err(codec->dev, "Failed to register codec: %d\n", ret);

		goto err_reg_codec;

	}



	dit_stub_dai.dev = &pdev->dev;

	return snd_soc_register_dai(&dit_stub_dai);

	ret = snd_soc_register_dai(&dit_stub_dai);

	if (ret < 0) {

		dev_err(codec->dev, "Failed to register dai: %d\n", ret);

		goto err_reg_dai;

	}



	return 0;



err_reg_dai:

	snd_soc_unregister_codec(codec);

err_reg_codec:

	kfree(spdif_dit_codec);

	return ret;

}



static int spdif_dit_remove(struct platform_device *pdev)

{

	snd_soc_unregister_dai(&dit_stub_dai);

	snd_soc_unregister_codec(spdif_dit_codec);

	kfree(spdif_dit_codec);

	spdif_dit_codec = NULL;

	return 0;

}