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Unverified Commit 7454a21c authored by Daniel Mack's avatar Daniel Mack Committed by Mark Brown
Browse files

ASoC: wm8782: add support for regulators 



Lookup regulators for Vdd and Vdda during probe, and enable them when the
component is linked.

Signed-off-by: default avatarDaniel Mack <daniel@zonque.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent cc65fb65

sound/soc/codecs/wm8782.c

+63 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/device.h>

#include <linux/regulator/consumer.h>

#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/ac97_codec.h>
@@ -50,7 +51,51 @@ static struct snd_soc_dai_driver wm8782_dai = { 
	},

};



/* regulator power supply names */

static const char *supply_names[] = {

	"Vdda", /* analog supply, 2.7V - 3.6V */

	"Vdd",  /* digital supply, 2.7V - 5.5V */

};



struct wm8782_priv {

	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];

};



static int wm8782_soc_probe(struct snd_soc_component *component)

{

	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);

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

}



static void wm8782_soc_remove(struct snd_soc_component *component)

{

	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);

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

}



#ifdef CONFIG_PM

static int wm8782_soc_suspend(struct snd_soc_component *component)

{

	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);

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

	return 0;

}



static int wm8782_soc_resume(struct snd_soc_component *component)

{

	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);

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

}

#else

#define wm8782_soc_suspend      NULL

#define wm8782_soc_resume       NULL

#endif /* CONFIG_PM */



static const struct snd_soc_component_driver soc_component_dev_wm8782 = {

	.probe			= wm8782_soc_probe,

	.remove			= wm8782_soc_remove,

	.suspend		= wm8782_soc_suspend,

	.resume			= wm8782_soc_resume,

	.dapm_widgets		= wm8782_dapm_widgets,

	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),

	.dapm_routes		= wm8782_dapm_routes,
@@ -63,6 +108,24 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = { 


static int wm8782_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct wm8782_priv *priv;

	int ret, i;



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

	if (!priv)

		return -ENOMEM;



	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;



	return devm_snd_soc_register_component(&pdev->dev,

			&soc_component_dev_wm8782, &wm8782_dai, 1);

}