ASoC: wm8782: add support for regulators (7454a21c) · Commits · 戴 / test

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);
		}

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