ASoC: tlv320aic32x4: Support for regulators
Support regulators to power up the codec. This patch also enables the AVDD LDO if no AV regulator was found. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
parent
98b664e2ce
commit
239b669b2d
|
@ -5,6 +5,14 @@ The tlv320aic32x4 serial control bus communicates through I2C protocols
|
|||
Required properties:
|
||||
- compatible: Should be "ti,tlv320aic32x4"
|
||||
- reg: I2C slave address
|
||||
- supply-*: Required supply regulators are:
|
||||
"iov" - digital IO power supply
|
||||
"ldoin" - LDO power supply
|
||||
"dv" - Digital core power supply
|
||||
"av" - Analog core power supply
|
||||
If you supply ldoin, dv and av are optional. Otherwise they are required
|
||||
See regulator/regulator.txt for more information about the detailed binding
|
||||
format.
|
||||
|
||||
Optional properties:
|
||||
- reset-gpios: Reset-GPIO phandle with args as described in gpio/gpio.txt
|
||||
|
|
|
@ -34,6 +34,7 @@
|
|||
#include <linux/cdev.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/clk.h>
|
||||
#include <linux/regulator/consumer.h>
|
||||
|
||||
#include <sound/tlv320aic32x4.h>
|
||||
#include <sound/core.h>
|
||||
|
@ -69,6 +70,11 @@ struct aic32x4_priv {
|
|||
bool swapdacs;
|
||||
int rstn_gpio;
|
||||
struct clk *mclk;
|
||||
|
||||
struct regulator *supply_ldo;
|
||||
struct regulator *supply_iov;
|
||||
struct regulator *supply_dv;
|
||||
struct regulator *supply_av;
|
||||
};
|
||||
|
||||
/* 0dB min, 0.5dB steps */
|
||||
|
@ -695,6 +701,106 @@ static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static void aic32x4_disable_regulators(struct aic32x4_priv *aic32x4)
|
||||
{
|
||||
regulator_disable(aic32x4->supply_iov);
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_ldo))
|
||||
regulator_disable(aic32x4->supply_ldo);
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_dv))
|
||||
regulator_disable(aic32x4->supply_dv);
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_av))
|
||||
regulator_disable(aic32x4->supply_av);
|
||||
}
|
||||
|
||||
static int aic32x4_setup_regulators(struct device *dev,
|
||||
struct aic32x4_priv *aic32x4)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
aic32x4->supply_ldo = devm_regulator_get_optional(dev, "ldoin");
|
||||
aic32x4->supply_iov = devm_regulator_get(dev, "iov");
|
||||
aic32x4->supply_dv = devm_regulator_get_optional(dev, "dv");
|
||||
aic32x4->supply_av = devm_regulator_get_optional(dev, "av");
|
||||
|
||||
/* Check if the regulator requirements are fulfilled */
|
||||
|
||||
if (IS_ERR(aic32x4->supply_iov)) {
|
||||
dev_err(dev, "Missing supply 'iov'\n");
|
||||
return PTR_ERR(aic32x4->supply_iov);
|
||||
}
|
||||
|
||||
if (IS_ERR(aic32x4->supply_ldo)) {
|
||||
if (PTR_ERR(aic32x4->supply_ldo) == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
|
||||
if (IS_ERR(aic32x4->supply_dv)) {
|
||||
dev_err(dev, "Missing supply 'dv' or 'ldoin'\n");
|
||||
return PTR_ERR(aic32x4->supply_dv);
|
||||
}
|
||||
if (IS_ERR(aic32x4->supply_av)) {
|
||||
dev_err(dev, "Missing supply 'av' or 'ldoin'\n");
|
||||
return PTR_ERR(aic32x4->supply_av);
|
||||
}
|
||||
} else {
|
||||
if (IS_ERR(aic32x4->supply_dv) &&
|
||||
PTR_ERR(aic32x4->supply_dv) == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
if (IS_ERR(aic32x4->supply_av) &&
|
||||
PTR_ERR(aic32x4->supply_av) == -EPROBE_DEFER)
|
||||
return -EPROBE_DEFER;
|
||||
}
|
||||
|
||||
ret = regulator_enable(aic32x4->supply_iov);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable regulator iov\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_ldo)) {
|
||||
ret = regulator_enable(aic32x4->supply_ldo);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable regulator ldo\n");
|
||||
goto error_ldo;
|
||||
}
|
||||
}
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_dv)) {
|
||||
ret = regulator_enable(aic32x4->supply_dv);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable regulator dv\n");
|
||||
goto error_dv;
|
||||
}
|
||||
}
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_av)) {
|
||||
ret = regulator_enable(aic32x4->supply_av);
|
||||
if (ret) {
|
||||
dev_err(dev, "Failed to enable regulator av\n");
|
||||
goto error_av;
|
||||
}
|
||||
}
|
||||
|
||||
if (!IS_ERR(aic32x4->supply_ldo) && IS_ERR(aic32x4->supply_av))
|
||||
aic32x4->power_cfg |= AIC32X4_PWR_AIC32X4_LDO_ENABLE;
|
||||
|
||||
return 0;
|
||||
|
||||
error_av:
|
||||
if (!IS_ERR(aic32x4->supply_dv))
|
||||
regulator_disable(aic32x4->supply_dv);
|
||||
|
||||
error_dv:
|
||||
if (!IS_ERR(aic32x4->supply_ldo))
|
||||
regulator_disable(aic32x4->supply_ldo);
|
||||
|
||||
error_ldo:
|
||||
regulator_disable(aic32x4->supply_iov);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int aic32x4_i2c_probe(struct i2c_client *i2c,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
|
@ -745,13 +851,31 @@ static int aic32x4_i2c_probe(struct i2c_client *i2c,
|
|||
return ret;
|
||||
}
|
||||
|
||||
ret = aic32x4_setup_regulators(&i2c->dev, aic32x4);
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to setup regulators\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = snd_soc_register_codec(&i2c->dev,
|
||||
&soc_codec_dev_aic32x4, &aic32x4_dai, 1);
|
||||
return ret;
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to register codec\n");
|
||||
aic32x4_disable_regulators(aic32x4);
|
||||
return ret;
|
||||
}
|
||||
|
||||
i2c_set_clientdata(i2c, aic32x4);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int aic32x4_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
struct aic32x4_priv *aic32x4 = i2c_get_clientdata(client);
|
||||
|
||||
aic32x4_disable_regulators(aic32x4);
|
||||
|
||||
snd_soc_unregister_codec(&client->dev);
|
||||
return 0;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue