regulator: max77686: Pass descriptor instead of GPIO number

Instead of passing a global GPIO number, pass a descriptor looked
up from the device tree configuration node.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max77686-regulator.c

@@ -25,8 +25,7 @@
 #include <linux/kernel.h>
 #include <linux/bug.h>
 #include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
@@ -90,6 +89,7 @@ enum max77686_ramp_rate {
 };
 
 struct max77686_data {
+	struct device *dev;
 	DECLARE_BITMAP(gpio_enabled, MAX77686_REGULATORS);
 
 	/* Array indexed by regulator id */
@@ -269,16 +269,20 @@ static int max77686_of_parse_cb(struct device_node *np,
 	case MAX77686_BUCK8:
 	case MAX77686_BUCK9:
 	case MAX77686_LDO20 ... MAX77686_LDO22:
-		config->ena_gpio = of_get_named_gpio(np,
-					"maxim,ena-gpios", 0);
-		config->ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
-		config->ena_gpio_initialized = true;
+		config->ena_gpiod = devm_gpiod_get_from_of_node(max77686->dev,
+								np,
+								"maxim,ena",
+								0,
+								GPIOD_OUT_HIGH,
+								"max77686-regulator");
+		if (IS_ERR(config->ena_gpiod))
+			config->ena_gpiod = NULL;
 		break;
 	default:
 		return 0;
 	}
 
-	if (gpio_is_valid(config->ena_gpio)) {
+	if (config->ena_gpiod) {
 		set_bit(desc->id, max77686->gpio_enabled);
 
 		return regmap_update_bits(config->regmap, desc->enable_reg,
@@ -521,6 +525,7 @@ static int max77686_pmic_probe(struct platform_device *pdev)
 	if (!max77686)
 		return -ENOMEM;
 
+	max77686->dev = &pdev->dev;
 	config.dev = iodev->dev;
 	config.regmap = iodev->regmap;
 	config.driver_data = max77686;