ASoC: simple-card-utils: switch to using gpiod API

This patch switches the driver away from legacy gpio/of_gpio API to
gpiod API, and removes use of of_get_named_gpio_flags() which I want to
make private to gpiolib.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/YxeaITtlJexygQo9@google.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/generic/simple-card-utils.c

@@ -9,7 +9,6 @@
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_gpio.h>
 #include <linux/of_graph.h>
 #include <sound/jack.h>
 #include <sound/pcm_params.h>
@@ -729,12 +728,12 @@ int asoc_simple_init_jack(struct snd_soc_card *card,
 			  char *pin)
 {
 	struct device *dev = card->dev;
-	enum of_gpio_flags flags;
+	struct gpio_desc *desc;
 	char prop[128];
 	char *pin_name;
 	char *gpio_name;
 	int mask;
-	int det;
+	int error;
 
 	if (!prefix)
 		prefix = "";
@@ -742,36 +741,39 @@ int asoc_simple_init_jack(struct snd_soc_card *card,
 	sjack->gpio.gpio = -ENOENT;
 
 	if (is_hp) {
-		snprintf(prop, sizeof(prop), "%shp-det-gpio", prefix);
+		snprintf(prop, sizeof(prop), "%shp-det", prefix);
 		pin_name	= pin ? pin : "Headphones";
 		gpio_name	= "Headphone detection";
 		mask		= SND_JACK_HEADPHONE;
 	} else {
-		snprintf(prop, sizeof(prop), "%smic-det-gpio", prefix);
+		snprintf(prop, sizeof(prop), "%smic-det", prefix);
 		pin_name	= pin ? pin : "Mic Jack";
 		gpio_name	= "Mic detection";
 		mask		= SND_JACK_MICROPHONE;
 	}
 
-	det = of_get_named_gpio_flags(dev->of_node, prop, 0, &flags);
-	if (det == -EPROBE_DEFER)
-		return -EPROBE_DEFER;
+	desc = gpiod_get_optional(dev, prop, GPIOD_IN);
+	error = PTR_ERR_OR_ZERO(desc);
+	if (error)
+		return error;
+
+	if (desc) {
+		error = gpiod_set_consumer_name(desc, gpio_name);
+		if (error)
+			return error;
 
-	if (gpio_is_valid(det)) {
 		sjack->pin.pin		= pin_name;
 		sjack->pin.mask		= mask;
 
 		sjack->gpio.name	= gpio_name;
 		sjack->gpio.report	= mask;
-		sjack->gpio.gpio	= det;
-		sjack->gpio.invert	= !!(flags & OF_GPIO_ACTIVE_LOW);
+		sjack->gpio.desc	= desc;
 		sjack->gpio.debounce_time = 150;
 
 		snd_soc_card_jack_new_pins(card, pin_name, mask, &sjack->jack,
 					   &sjack->pin, 1);
 
-		snd_soc_jack_add_gpios(&sjack->jack, 1,
-				       &sjack->gpio);
+		snd_soc_jack_add_gpios(&sjack->jack, 1, &sjack->gpio);
 	}
 
 	return 0;