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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: Daniel Mack <daniel@zonque.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Daniel Mack 2018-10-03 21:34:36 +02:00 committed by Mark Brown
parent cc65fb650c
commit 7454a21c13
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GPG Key ID: 24D68B725D5487D0
1 changed files with 63 additions and 0 deletions
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63
sound/soc/codecs/wm8782.c
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@ -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);
}