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: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/ak5386.c b/sound/soc/codecs/ak5386.c
index 72e953b..a30be5c 100644
--- a/sound/soc/codecs/ak5386.c
+++ b/sound/soc/codecs/ak5386.c
@@ -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 @@
{ "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 @@
{
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 @@
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);