static int tas5086_probe(struct snd_soc_codec *codec)
{
struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
int i, ret;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0) {
dev_err(codec->dev, "Failed to enable regulators: %d\n", ret);
return ret;
}
priv->pwm_start_mid_z = 0;
priv->charge_period = 1300000; /* hardware default is 1300 ms */
if (of_match_device(of_match_ptr(tas5086_dt_ids), codec->dev)) {
struct device_node *of_node = codec->dev->of_node;
of_property_read_u32(of_node, "ti,charge-period",
&priv->charge_period);
for (i = 0; i < 6; i++) {
char name[25];
snprintf(name, sizeof(name),
"ti,mid-z-channel-%d", i + 1);
if (of_get_property(of_node, name, NULL) != NULL)
priv->pwm_start_mid_z |= 1 << i;
}
}
tas5086_reset(priv);
ret = tas5086_init(codec->dev, priv);
if (ret < 0)
goto exit_disable_regulators;
/* set master volume to 0 dB */
ret = regmap_write(priv->regmap, TAS5086_MASTER_VOL, 0x30);
if (ret < 0)
goto exit_disable_regulators;
return 0;
exit_disable_regulators:
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
return ret;
}
static int tas5086_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tas5086_private *priv;
struct device *dev = &i2c->dev;
int gpio_nreset = -EINVAL;
int i, ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
return ret;
}
i2c_set_clientdata(i2c, priv);
if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
struct device_node *of_node = dev->of_node;
gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
}
if (gpio_is_valid(gpio_nreset))
if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
gpio_nreset = -EINVAL;
priv->gpio_nreset = gpio_nreset;
tas5086_reset(priv);
/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
if (ret < 0)
return ret;
if (i != 0x3) {
dev_err(dev,
"Failed to identify TAS5086 codec (got %02x)\n", i);
return -ENODEV;
}
return snd_soc_register_codec(&i2c->dev, &soc_codec_dev_tas5086,
&tas5086_dai, 1);
}
static int tas5086_soc_resume(struct snd_soc_codec *codec)
{
struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
int ret;
tas5086_reset(priv);
regcache_mark_dirty(priv->regmap);
ret = tas5086_init(codec->dev, priv);
if (ret < 0)
return ret;
ret = regcache_sync(priv->regmap);
if (ret < 0)
return ret;
return 0;
}
static int tas5086_soc_resume(struct snd_soc_codec *codec)
{
struct tas5086_private *priv = snd_soc_codec_get_drvdata(codec);
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0)
return ret;
tas5086_reset(priv);
regcache_mark_dirty(priv->regmap);
ret = tas5086_init(codec->dev, priv);
if (ret < 0)
return ret;
ret = regcache_sync(priv->regmap);
if (ret < 0)
return ret;
return 0;
}
static int tas5086_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct tas5086_private *priv;
struct device *dev = &i2c->dev;
int gpio_nreset = -EINVAL;
int i, ret;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
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) {
dev_err(dev, "Failed to get regulators: %d\n", ret);
return ret;
}
priv->regmap = devm_regmap_init(dev, NULL, i2c, &tas5086_regmap);
if (IS_ERR(priv->regmap)) {
ret = PTR_ERR(priv->regmap);
dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
return ret;
}
i2c_set_clientdata(i2c, priv);
if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
struct device_node *of_node = dev->of_node;
gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
}
if (gpio_is_valid(gpio_nreset))
if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
gpio_nreset = -EINVAL;
priv->gpio_nreset = gpio_nreset;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators: %d\n", ret);
return ret;
}
tas5086_reset(priv);
/* The TAS5086 always returns 0x03 in its TAS5086_DEV_ID register */
ret = regmap_read(priv->regmap, TAS5086_DEV_ID, &i);
if (ret == 0 && i != 0x3) {
dev_err(dev,
"Failed to identify TAS5086 codec (got %02x)\n", i);
ret = -ENODEV;
}
/*
* The chip has been identified, so we can turn off the power
* again until the dai link is set up.
*/
regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret == 0)
ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_tas5086,
&tas5086_dai, 1);
return ret;
}