Commit fb668e73 authored by Daniel Mack's avatar Daniel Mack Committed by Mark Brown
Browse files

ASoC: ak5386: add regulator consumer support 



The chip has two power supplies, VA and VDD. Enable them both as long
as the codec is in use.

Signed-off-by: default avatarDaniel Mack <zonque@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 7171511e

sound/soc/codecs/ak5386.c

+50 −0
Original line number Diff line number Diff line
@@ -14,12 +14,18 @@ 
#include <linux/of.h>

#include <linux/of_gpio.h>

#include <linux/of_device.h>

#include <linux/regulator/consumer.h>

#include <sound/soc.h>

#include <sound/pcm.h>

#include <sound/initval.h>



static const char const *supply_names[] = {

	"va", "vd"

};



struct ak5386_priv {

	int reset_gpio;

	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];

};



static const struct snd_soc_dapm_widget ak5386_dapm_widgets[] = {
@@ -32,7 +38,42 @@ static const struct snd_soc_dapm_route ak5386_dapm_routes[] = { 
	{ "Capture", NULL, "AINR" },

};



static int ak5386_soc_probe(struct snd_soc_codec *codec)

{

	struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec);

	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);

}



static int ak5386_soc_remove(struct snd_soc_codec *codec)

{

	struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec);

	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);

	return 0;

}



#ifdef CONFIG_PM

static int ak5386_soc_suspend(struct snd_soc_codec *codec)

{

	struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec);

	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);

	return 0;

}



static int ak5386_soc_resume(struct snd_soc_codec *codec)

{

	struct ak5386_priv *priv = snd_soc_codec_get_drvdata(codec);

	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);

}

#else

#define ak5386_soc_suspend	NULL

#define ak5386_soc_resume	NULL

#endif /* CONFIG_PM */



static struct snd_soc_codec_driver soc_codec_ak5386 = {

	.probe = ak5386_soc_probe,

	.remove = ak5386_soc_remove,

	.suspend = ak5386_soc_suspend,

	.resume = ak5386_soc_resume,

	.dapm_widgets = ak5386_dapm_widgets,

	.num_dapm_widgets = ARRAY_SIZE(ak5386_dapm_widgets),

	.dapm_routes = ak5386_dapm_routes,
@@ -122,6 +163,7 @@ static int ak5386_probe(struct platform_device *pdev) 
{

	struct device *dev = &pdev->dev;

	struct ak5386_priv *priv;

	int ret, i;



	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	if (!priv)
@@ -130,6 +172,14 @@ static int ak5386_probe(struct platform_device *pdev) 
	priv->reset_gpio = -EINVAL;

	dev_set_drvdata(dev, priv);



	for (i = 0; i < ARRAY_SIZE(supply_names); i++)

		priv->supplies[i].supply = supply_names[i];



	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),

				      priv->supplies);

	if (ret < 0)

		return ret;



	if (of_match_device(of_match_ptr(ak5386_dt_ids), dev))

		priv->reset_gpio = of_get_named_gpio(dev->of_node,

						      "reset-gpio", 0);