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ASoC: ak4104: add regulator consumer support

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The AK4104 has only one power supply, called VDD. Enable it as long as
the codec is in use.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Daniel Mack 2014-03-27 21:42:15 +01:00 committed by Mark Brown
parent c9eaa447e7
commit b38d10ed60
1 changed files with 55 additions and 7 deletions
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62
sound/soc/codecs/ak4104.c
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@ -11,13 +11,14 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/regulator/consumer.h>
#include <sound/asoundef.h>
#include <sound/core.h>
#include <sound/soc.h>
#include <sound/initval.h>
/* AK4104 registers addresses */
#define AK4104_REG_CONTROL1 0x00
@ -47,6 +48,7 @@
struct ak4104_private {
struct regmap *regmap;
struct regulator *regulator;
};
static const struct snd_soc_dapm_widget ak4104_dapm_widgets[] = {
@ -174,20 +176,30 @@ static int ak4104_probe(struct snd_soc_codec *codec)
struct ak4104_private *ak4104 = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_enable(ak4104->regulator);
if (ret < 0) {
dev_err(codec->dev, "Unable to enable regulator: %d\n", ret);
return ret;
}
/* set power-up and non-reset bits */
ret = regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1,
AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN,
AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN);
if (ret < 0)
return ret;
goto exit_disable_regulator;
/* enable transmitter */
ret = regmap_update_bits(ak4104->regmap, AK4104_REG_TX,
AK4104_TX_TXE, AK4104_TX_TXE);
if (ret < 0)
return ret;
goto exit_disable_regulator;
return 0;
exit_disable_regulator:
regulator_disable(ak4104->regulator);
return ret;
}
static int ak4104_remove(struct snd_soc_codec *codec)
@ -196,13 +208,42 @@ static int ak4104_remove(struct snd_soc_codec *codec)
regmap_update_bits(ak4104->regmap, AK4104_REG_CONTROL1,
AK4104_CONTROL1_PW | AK4104_CONTROL1_RSTN, 0);
regulator_disable(ak4104->regulator);
return 0;
}
#ifdef CONFIG_PM
static int ak4104_soc_suspend(struct snd_soc_codec *codec)
{
struct ak4104_private *priv = snd_soc_codec_get_drvdata(codec);
regulator_disable(priv->regulator);
return 0;
}
static int ak4104_soc_resume(struct snd_soc_codec *codec)
{
struct ak4104_private *priv = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_enable(priv->regulator);
if (ret < 0)
return ret;
return 0;
}
#else
#define ak4104_soc_suspend NULL
#define ak4104_soc_resume NULL
#endif /* CONFIG_PM */
static struct snd_soc_codec_driver soc_codec_device_ak4104 = {
.probe = ak4104_probe,
.remove = ak4104_remove,
.probe = ak4104_probe,
.remove = ak4104_remove,
.suspend = ak4104_soc_suspend,
.resume = ak4104_soc_resume,
.dapm_widgets = ak4104_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4104_dapm_widgets),
@ -239,6 +280,13 @@ static int ak4104_spi_probe(struct spi_device *spi)
if (ak4104 == NULL)
return -ENOMEM;
ak4104->regulator = devm_regulator_get(&spi->dev, "vdd");
if (IS_ERR(ak4104->regulator)) {
ret = PTR_ERR(ak4104->regulator);
dev_err(&spi->dev, "Unable to get Vdd regulator: %d\n", ret);
return ret;
}
ak4104->regmap = devm_regmap_init_spi(spi, &ak4104_regmap);
if (IS_ERR(ak4104->regmap)) {
ret = PTR_ERR(ak4104->regmap);