ASoC: wm8960: Add support for the power supplies

WM8960 has the following power supplies:

- AVDD
- DBVDD
- DCVDD
- SPKVDD1
- SPKVDD1

Add support for them.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230803215506.142922-2-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index d4bc97088354542bf589603d4ef2a8b96cc27be0..0a50180750e8815c42040b4e433cd2f0381d3148 100644 (file)
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -120,6 +120,15 @@ static bool wm8960_volatile(struct device *dev, unsigned int reg)
        }
 }
 
+#define WM8960_NUM_SUPPLIES 5
+static const char *wm8960_supply_names[WM8960_NUM_SUPPLIES] = {
+       "DCVDD",
+       "DBVDD",
+       "AVDD",
+       "SPKVDD1",
+       "SPKVDD2",
+};
+
 struct wm8960_priv {
        struct clk *mclk;
        struct regmap *regmap;
@@ -137,6 +146,7 @@ struct wm8960_priv {
        bool is_stream_in_use[2];
        struct wm8960_data pdata;
        ktime_t dsch_start;
+       struct regulator_bulk_data supplies[WM8960_NUM_SUPPLIES];
 };
 
 #define wm8960_reset(c)        regmap_write(c, WM8960_RESET, 0)
@@ -1417,6 +1427,7 @@ static int wm8960_i2c_probe(struct i2c_client *i2c)
 {
        struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
        struct wm8960_priv *wm8960;
+       unsigned int i;
        int ret;
        u8 val;
 
@@ -1439,6 +1450,23 @@ static int wm8960_i2c_probe(struct i2c_client *i2c)
                }
        }
 
+       for (i = 0; i < ARRAY_SIZE(wm8960->supplies); i++)
+               wm8960->supplies[i].supply = wm8960_supply_names[i];
+
+       ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8960->supplies),
+                                wm8960->supplies);
+       if (ret <  0) {
+               dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
+               return ret;
+       }
+
+       ret = regulator_bulk_enable(ARRAY_SIZE(wm8960->supplies),
+                                   wm8960->supplies);
+       if (ret < 0) {
+               dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
+               return ret;
+       }
+
        wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
        if (IS_ERR(wm8960->regmap))
                return PTR_ERR(wm8960->regmap);
@@ -1505,7 +1533,11 @@ static int wm8960_i2c_probe(struct i2c_client *i2c)
 }
 
 static void wm8960_i2c_remove(struct i2c_client *client)
-{}
+{
+       struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
+
+       regulator_bulk_disable(ARRAY_SIZE(wm8960->supplies), wm8960->supplies);
+}
 
 static const struct i2c_device_id wm8960_i2c_id[] = {
        { "wm8960", 0 },