@@ -10,6 +10,7 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
#include <sound/soc.h>
#define TFA989X_STATUSREG 0x00
@@ -51,6 +52,10 @@ struct tfa989x_rev {
int (*init)(struct regmap *regmap);
};
+struct tfa989x {
+ struct regulator *vddd_supply;
+};
+
static bool tfa989x_writeable_reg(struct device *dev, unsigned int reg)
{
return reg > TFA989X_REVISIONNUMBER;
@@ -242,10 +247,18 @@ static int tfa989x_dsp_bypass(struct regmap *regmap)
BIT(TFA989X_SYS_CTRL_AMPC));
}
+static void tfa989x_regulator_disable(void *data)
+{
+ struct tfa989x *tfa989x = data;
+
+ regulator_disable(tfa989x->vddd_supply);
+}
+
static int tfa989x_i2c_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
const struct tfa989x_rev *rev;
+ struct tfa989x *tfa989x;
struct regmap *regmap;
unsigned int val;
int ret;
@@ -256,10 +269,31 @@ static int tfa989x_i2c_probe(struct i2c_client *i2c)
return -ENODEV;
}
+ tfa989x = devm_kzalloc(dev, sizeof(*tfa989x), GFP_KERNEL);
+ if (!tfa989x)
+ return -ENOMEM;
+
+ i2c_set_clientdata(i2c, tfa989x);
+
+ tfa989x->vddd_supply = devm_regulator_get(dev, "vddd");
+ if (IS_ERR(tfa989x->vddd_supply))
+ return dev_err_probe(dev, PTR_ERR(tfa989x->vddd_supply),
+ "Failed to get vddd regulator\n");
+
regmap = devm_regmap_init_i2c(i2c, &tfa989x_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
+ ret = regulator_enable(tfa989x->vddd_supply);
+ if (ret) {
+ dev_err(dev, "Failed to enable vddd regulator: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_add_action_or_reset(dev, tfa989x_regulator_disable, tfa989x);
+ if (ret)
+ return ret;
+
/* Bypass regcache for reset and init sequence */
regcache_cache_bypass(regmap, true);
Allow specifying Vddd regulator/supply to be enabled on I2C probing. Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org> --- sound/soc/codecs/tfa989x.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+)