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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/sound/soc/codecs/wm8782.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * sound/soc/codecs/wm8782.c
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  * simple, strap-pin configured 24bit 2ch ADC
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@@ -6,13 +7,8 @@
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  * Author: Johannes Stezenbach <js@sig21.net>
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  *
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  * based on ad73311.c
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- * Copyright:	Analog Device Inc.
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+ * Copyright:	Analog Devices Inc.
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  * Author:	Cliff Cai <cliff.cai@analog.com>
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- *
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- * This program is free software; you can redistribute  it and/or modify it
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- * under  the terms of  the GNU General  Public License as published by the
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- * Free Software Foundation;  either version 2 of the  License, or (at your
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- * option) any later version.
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  */
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13
 
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 #include <linux/init.h>
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@@ -20,6 +16,7 @@
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 #include <linux/module.h>
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 #include <linux/kernel.h>
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 #include <linux/device.h>
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+#include <linux/regulator/consumer.h>
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 #include <sound/core.h>
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 #include <sound/pcm.h>
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 #include <sound/ac97_codec.h>
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@@ -50,7 +47,51 @@
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 	},
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 };
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49
 
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+/* regulator power supply names */
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+static const char *supply_names[] = {
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+	"Vdda", /* analog supply, 2.7V - 3.6V */
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+	"Vdd",  /* digital supply, 2.7V - 5.5V */
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+};
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+
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+struct wm8782_priv {
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+	struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
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+};
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+
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+static int wm8782_soc_probe(struct snd_soc_component *component)
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+{
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+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
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+}
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+
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+static void wm8782_soc_remove(struct snd_soc_component *component)
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+{
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+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
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+}
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+
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+#ifdef CONFIG_PM
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+static int wm8782_soc_suspend(struct snd_soc_component *component)
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+{
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+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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+	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
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+	return 0;
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+}
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+
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+static int wm8782_soc_resume(struct snd_soc_component *component)
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+{
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+	struct wm8782_priv *priv = snd_soc_component_get_drvdata(component);
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+	return regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
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+}
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+#else
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+#define wm8782_soc_suspend      NULL
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+#define wm8782_soc_resume       NULL
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+#endif /* CONFIG_PM */
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+
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 static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
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+	.probe			= wm8782_soc_probe,
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+	.remove			= wm8782_soc_remove,
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+	.suspend		= wm8782_soc_suspend,
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+	.resume			= wm8782_soc_resume,
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 	.dapm_widgets		= wm8782_dapm_widgets,
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 	.num_dapm_widgets	= ARRAY_SIZE(wm8782_dapm_widgets),
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 	.dapm_routes		= wm8782_dapm_routes,
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@@ -63,6 +104,24 @@
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104
 
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 static int wm8782_probe(struct platform_device *pdev)
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 {
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+	struct device *dev = &pdev->dev;
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+	struct wm8782_priv *priv;
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+	int ret, i;
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+
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+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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+	if (!priv)
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+		return -ENOMEM;
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+
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+	dev_set_drvdata(dev, priv);
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+
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+	for (i = 0; i < ARRAY_SIZE(supply_names); i++)
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+		priv->supplies[i].supply = supply_names[i];
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+
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+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
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+				      priv->supplies);
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+	if (ret < 0)
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+		return ret;
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+
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 	return devm_snd_soc_register_component(&pdev->dev,
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 			&soc_component_dev_wm8782, &wm8782_dai, 1);
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 }