1 files changed, 31 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8903.c b/sound/soc/codecs/wm8903.c
index 6e887c2c42b1..237eeb9a8b97 100644
--- a/sound/soc/codecs/wm8903.c
+++ b/sound/soc/codecs/wm8903.c
@@ -24,6 +24,7 @@
 #include <linux/pm.h>
 #include <linux/i2c.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/irq.h>
 #include <linux/mutex.h>
@@ -115,10 +116,19 @@ static const struct reg_default wm8903_reg_defaults[] = {
 	{ 172, 0x0000 },    /* R172 - Analogue Output Bias 0 */
 };
 
+#define WM8903_NUM_SUPPLIES 4
+static const char *wm8903_supply_names[WM8903_NUM_SUPPLIES] = {
+	"AVDD",
+	"CPVDD",
+	"DBVDD",
+	"DCVDD",
+};
+
 struct wm8903_priv {
 	struct wm8903_platform_data *pdata;
 	struct device *dev;
 	struct regmap *regmap;
+	struct regulator_bulk_data supplies[WM8903_NUM_SUPPLIES];
 
 	int sysclk;
 	int irq;
@@ -2030,6 +2040,23 @@ static int wm8903_i2c_probe(struct i2c_client *i2c,
 
 	pdata = wm8903->pdata;
 
+	for (i = 0; i < ARRAY_SIZE(wm8903->supplies); i++)
+		wm8903->supplies[i].supply = wm8903_supply_names[i];
+
+	ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8903->supplies),
+				      wm8903->supplies);
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(wm8903->supplies),
+				    wm8903->supplies);
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
+		return ret;
+	}
+
 	ret = regmap_read(wm8903->regmap, WM8903_SW_RESET_AND_ID, &val);
 	if (ret != 0) {
 		dev_err(&i2c->dev, "Failed to read chip ID: %d\n", ret);
@@ -2160,6 +2187,8 @@ static int wm8903_i2c_probe(struct i2c_client *i2c,
 
 	return 0;
 err:
+	regulator_bulk_disable(ARRAY_SIZE(wm8903->supplies),
+			       wm8903->supplies);
 	return ret;
 }
 
@@ -2167,6 +2196,8 @@ static int wm8903_i2c_remove(struct i2c_client *client)
 {
 	struct wm8903_priv *wm8903 = i2c_get_clientdata(client);
 
+	regulator_bulk_disable(ARRAY_SIZE(wm8903->supplies),
+			       wm8903->supplies);
 	if (client->irq)
 		free_irq(client->irq, wm8903);
 	wm8903_free_gpio(wm8903);