[PATCH 2/2] ASoC: wm8960: Add support for the power supplies

From: Fabio Estevam
Date: Thu Aug 03 2023 - 17:56:06 EST


From: Fabio Estevam <festevam@xxxxxxx>

WM8960 has the following power supplies:

- AVDD
- DBVDD
- DCVDD
- SPKVDD1
- SPKVDD1

Add support for them.

Signed-off-by: Fabio Estevam <festevam@xxxxxxx>
---
Hi,

I haven't tested this. The motivation for this patch is due to a schema
warning on imx8m-evk.dts that says 'SPKVDD1-supply' is not a valid property.

sound/soc/codecs/wm8960.c | 34 +++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index d4bc97088354..0a50180750e8 100644
--- 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 },
--
2.34.1