ASoC: tlv320aic3x: Add basic regulator support
This patch adds the TLV320AIC3x supplies and enables all of them for the
entire lifetime of the device.
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 6b74ad8..584bc1e 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -38,6 +38,7 @@
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
+#include <linux/regulator/consumer.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -49,9 +50,18 @@
#include "tlv320aic3x.h"
+#define AIC3X_NUM_SUPPLIES 4
+static const char *aic3x_supply_names[AIC3X_NUM_SUPPLIES] = {
+ "IOVDD", /* I/O Voltage */
+ "DVDD", /* Digital Core Voltage */
+ "AVDD", /* Analog DAC Voltage */
+ "DRVDD", /* ADC Analog and Output Driver Voltage */
+};
+
/* codec private data */
struct aic3x_priv {
struct snd_soc_codec codec;
+ struct regulator_bulk_data supplies[AIC3X_NUM_SUPPLIES];
unsigned int sysclk;
int master;
};
@@ -1268,6 +1278,9 @@
snd_soc_unregister_dai(&aic3x_dai);
snd_soc_unregister_codec(&aic3x->codec);
+ regulator_bulk_disable(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
+ regulator_bulk_free(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
+
kfree(aic3x);
aic3x_codec = NULL;
@@ -1289,6 +1302,7 @@
{
struct snd_soc_codec *codec;
struct aic3x_priv *aic3x;
+ int ret, i;
aic3x = kzalloc(sizeof(struct aic3x_priv), GFP_KERNEL);
if (aic3x == NULL) {
@@ -1304,7 +1318,30 @@
i2c_set_clientdata(i2c, aic3x);
+ for (i = 0; i < ARRAY_SIZE(aic3x->supplies); i++)
+ aic3x->supplies[i].supply = aic3x_supply_names[i];
+
+ ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(aic3x->supplies),
+ aic3x->supplies);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
+ goto err_get;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(aic3x->supplies),
+ aic3x->supplies);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
+ goto err_enable;
+ }
+
return aic3x_register(codec);
+
+err_enable:
+ regulator_bulk_free(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
+err_get:
+ kfree(aic3x);
+ return ret;
}
static int aic3x_i2c_remove(struct i2c_client *client)