ASoC: codec: tpa6130a2: Convert to GPIO descriptors

of_gpio.h is deprecated, update the driver to use GPIO descriptors.
- Use devm_gpiod_get_optional to get GPIO descriptor with default
  polarity GPIOD_OUT_LOW, set consumer name.
- Use gpiod_set_value to configure output value.

Checking the DTS polarity, all users are using GPIOD_ACTIVE_HIGH.
so all should work as expected with this patch.

Cc: Lucas Stach <[email protected]>
Signed-off-by: Peng Fan <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: MrVan

sound/soc/codecs/tpa6130a2.c

@@ -9,11 +9,10 @@
 
 #include <linux/device.h>
 #include <linux/errno.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
@@ -32,7 +31,7 @@ struct tpa6130a2_data {
 	struct device *dev;
 	struct regmap *regmap;
 	struct regulator *supply;
-	int power_gpio;
+	struct gpio_desc *power_gpio;
 	enum tpa_model id;
 };
 
@@ -48,8 +47,7 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
 			return ret;
 		}
 		/* Power on */
-		if (data->power_gpio >= 0)
-			gpio_set_value(data->power_gpio, 1);
+		gpiod_set_value(data->power_gpio, 1);
 
 		/* Sync registers */
 		regcache_cache_only(data->regmap, false);
@@ -58,8 +56,7 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
 			dev_err(data->dev,
 				"Failed to sync registers: %d\n", ret);
 			regcache_cache_only(data->regmap, true);
-			if (data->power_gpio >= 0)
-				gpio_set_value(data->power_gpio, 0);
+			gpiod_set_value(data->power_gpio, 0);
 			ret2 = regulator_disable(data->supply);
 			if (ret2 != 0)
 				dev_err(data->dev,
@@ -75,8 +72,7 @@ static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
 		regcache_cache_only(data->regmap, true);
 
 		/* Power off */
-		if (data->power_gpio >= 0)
-			gpio_set_value(data->power_gpio, 0);
+		gpiod_set_value(data->power_gpio, 0);
 
 		ret = regulator_disable(data->supply);
 		if (ret != 0) {
@@ -230,7 +226,12 @@ static int tpa6130a2_probe(struct i2c_client *client)
 		return PTR_ERR(data->regmap);
 
 	if (np) {
-		data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
+		data->power_gpio = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
+		if (IS_ERR(data->power_gpio)) {
+			return dev_err_probe(dev, PTR_ERR(data->power_gpio),
+					     "Failed to request power GPIO\n");
+		}
+		gpiod_set_consumer_name(data->power_gpio, "tpa6130a2 enable");
 	} else {
 		dev_err(dev, "Platform data not set\n");
 		dump_stack();
@@ -241,17 +242,6 @@ static int tpa6130a2_probe(struct i2c_client *client)
 
 	data->id = (uintptr_t)i2c_get_match_data(client);
 
-	if (data->power_gpio >= 0) {
-		ret = devm_gpio_request(dev, data->power_gpio,
-					"tpa6130a2 enable");
-		if (ret < 0) {
-			dev_err(dev, "Failed to request power GPIO (%d)\n",
-				data->power_gpio);
-			return ret;
-		}
-		gpio_direction_output(data->power_gpio, 0);
-	}
-
 	switch (data->id) {
 	default:
 		dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",