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ASoC: tlv320dac33: Add support for regulator framework

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Take the regulator framework in use for managing the power sources.

Signed-off-by: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Ilkka Koskinen 2009-12-04 13:49:10 +02:00 committed by Mark Brown
parent f1608cca9d
commit 3a7aaed714
1 changed files with 81 additions and 15 deletions
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96
sound/soc/codecs/tlv320dac33.c
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@ -30,6 +30,7 @@
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
@ -58,11 +59,19 @@ enum dac33_state {
DAC33_FLUSH,
};
#define DAC33_NUM_SUPPLIES 3
static const char *dac33_supply_names[DAC33_NUM_SUPPLIES] = {
"AVDD",
"DVDD",
"IOVDD",
};
struct tlv320dac33_priv {
struct mutex mutex;
struct workqueue_struct *dac33_wq;
struct work_struct work;
struct snd_soc_codec codec;
struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
int power_gpio;
int chip_power;
int irq;
@ -297,28 +306,49 @@ static inline void dac33_soft_power(struct snd_soc_codec *codec, int power)
dac33_write(codec, DAC33_PWR_CTRL, reg);
}
static void dac33_hard_power(struct snd_soc_codec *codec, int power)
static int dac33_hard_power(struct snd_soc_codec *codec, int power)
{
struct tlv320dac33_priv *dac33 = codec->private_data;
int ret;
mutex_lock(&dac33->mutex);
if (power) {
if (dac33->power_gpio >= 0) {
gpio_set_value(dac33->power_gpio, 1);
dac33->chip_power = 1;
/* Restore registers */
dac33_restore_regs(codec);
ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
dac33->supplies);
if (ret != 0) {
dev_err(codec->dev,
"Failed to enable supplies: %d\n", ret);
goto exit;
}
if (dac33->power_gpio >= 0)
gpio_set_value(dac33->power_gpio, 1);
dac33->chip_power = 1;
/* Restore registers */
dac33_restore_regs(codec);
dac33_soft_power(codec, 1);
} else {
dac33_soft_power(codec, 0);
if (dac33->power_gpio >= 0) {
if (dac33->power_gpio >= 0)
gpio_set_value(dac33->power_gpio, 0);
dac33->chip_power = 0;
}
}
mutex_unlock(&dac33->mutex);
ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies),
dac33->supplies);
if (ret != 0) {
dev_err(codec->dev,
"Failed to disable supplies: %d\n", ret);
goto exit;
}
dac33->chip_power = 0;
}
exit:
mutex_unlock(&dac33->mutex);
return ret;
}
static int dac33_get_nsample(struct snd_kcontrol *kcontrol,
@ -469,6 +499,8 @@ static int dac33_add_widgets(struct snd_soc_codec *codec)
static int dac33_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
int ret;
switch (level) {
case SND_SOC_BIAS_ON:
dac33_soft_power(codec, 1);
@ -476,12 +508,19 @@ static int dac33_set_bias_level(struct snd_soc_codec *codec,
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (codec->bias_level == SND_SOC_BIAS_OFF)
dac33_hard_power(codec, 1);
if (codec->bias_level == SND_SOC_BIAS_OFF) {
ret = dac33_hard_power(codec, 1);
if (ret != 0)
return ret;
}
dac33_soft_power(codec, 0);
break;
case SND_SOC_BIAS_OFF:
dac33_hard_power(codec, 0);
ret = dac33_hard_power(codec, 0);
if (ret != 0)
return ret;
break;
}
codec->bias_level = level;
@ -959,6 +998,9 @@ static int dac33_soc_probe(struct platform_device *pdev)
/* power on device */
dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Bias level configuration has enabled regulator an extra time */
regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies);
return 0;
pcm_err:
@ -1039,7 +1081,7 @@ static int dac33_i2c_probe(struct i2c_client *client,
struct tlv320dac33_platform_data *pdata;
struct tlv320dac33_priv *dac33;
struct snd_soc_codec *codec;
int ret = 0;
int ret, i;
if (client->dev.platform_data == NULL) {
dev_err(&client->dev, "Platform data not set\n");
@ -1130,6 +1172,24 @@ static int dac33_i2c_probe(struct i2c_client *client,
}
}
for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
dac33->supplies[i].supply = dac33_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(dac33->supplies),
dac33->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
goto err_get;
}
ret = regulator_bulk_enable(ARRAY_SIZE(dac33->supplies),
dac33->supplies);
if (ret != 0) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_enable;
}
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
@ -1149,6 +1209,10 @@ static int dac33_i2c_probe(struct i2c_client *client,
return ret;
error_codec:
regulator_bulk_disable(ARRAY_SIZE(dac33->supplies), dac33->supplies);
err_enable:
regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
err_get:
if (dac33->irq >= 0) {
free_irq(dac33->irq, &dac33->codec);
destroy_workqueue(dac33->dac33_wq);
@ -1177,6 +1241,8 @@ static int dac33_i2c_remove(struct i2c_client *client)
if (dac33->irq >= 0)
free_irq(dac33->irq, &dac33->codec);
regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
destroy_workqueue(dac33->dac33_wq);
snd_soc_unregister_dai(&dac33_dai);
snd_soc_unregister_codec(&dac33->codec);