linux-kernel - [PATCH 03/11] ASoC: tas5086: switch to using gpiod API

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Message-Id: <20221116053817.2929810-3-dmitry.torokhov@gmail.com>
Date:   Tue, 15 Nov 2022 21:38:09 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>
Cc:     linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH 03/11] ASoC: tas5086: switch to using gpiod API

Switch the driver from legacy gpio API that is deprecated to the newer
gpiod API that respects line polarities described in ACPI/DT.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 sound/soc/codecs/tas5086.c | 32 ++++++++++++++------------------
 1 file changed, 14 insertions(+), 18 deletions(-)

diff --git a/sound/soc/codecs/tas5086.c b/sound/soc/codecs/tas5086.c
index 22143cc5afa7..66b22b800e01 100644
--- a/sound/soc/codecs/tas5086.c
+++ b/sound/soc/codecs/tas5086.c
@@ -24,14 +24,14 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
@@ -246,7 +246,7 @@ struct tas5086_private {
 	/* Current sample rate for de-emphasis control */
 	int		rate;
 	/* GPIO driving Reset pin, if any */
-	int		gpio_nreset;
+	struct gpio_desc *reset_gpio;
 	struct		regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
 };
 
@@ -462,11 +462,11 @@ static int tas5086_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
 
 static void tas5086_reset(struct tas5086_private *priv)
 {
-	if (gpio_is_valid(priv->gpio_nreset)) {
+	if (priv->reset_gpio) {
 		/* Reset codec - minimum assertion time is 400ns */
-		gpio_direction_output(priv->gpio_nreset, 0);
+		gpiod_set_value_cansleep(priv->reset_gpio, 1);
 		udelay(1);
-		gpio_set_value(priv->gpio_nreset, 1);
+		gpiod_set_value_cansleep(priv->reset_gpio, 0);
 
 		/* Codec needs ~15ms to wake up */
 		msleep(15);
@@ -867,9 +867,10 @@ static void tas5086_remove(struct snd_soc_component *component)
 {
 	struct tas5086_private *priv = snd_soc_component_get_drvdata(component);
 
-	if (gpio_is_valid(priv->gpio_nreset))
+	if (priv->reset_gpio) {
 		/* Set codec to the reset state */
-		gpio_set_value(priv->gpio_nreset, 0);
+		gpiod_set_value_cansleep(priv->reset_gpio, 1);
+	}
 
 	regulator_bulk_disable(ARRAY_SIZE(priv->supplies), priv->supplies);
 };
@@ -914,7 +915,6 @@ static int tas5086_i2c_probe(struct i2c_client *i2c)
 {
 	struct tas5086_private *priv;
 	struct device *dev = &i2c->dev;
-	int gpio_nreset = -EINVAL;
 	int i, ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -940,16 +940,12 @@ static int tas5086_i2c_probe(struct i2c_client *i2c)
 
 	i2c_set_clientdata(i2c, priv);
 
-	if (of_match_device(of_match_ptr(tas5086_dt_ids), dev)) {
-		struct device_node *of_node = dev->of_node;
-		gpio_nreset = of_get_named_gpio(of_node, "reset-gpio", 0);
-	}
-
-	if (gpio_is_valid(gpio_nreset))
-		if (devm_gpio_request(dev, gpio_nreset, "TAS5086 Reset"))
-			gpio_nreset = -EINVAL;
+	priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	ret = PTR_ERR_OR_ZERO(priv->reset_gpio);
+	if (ret)
+		return ret;
 
-	priv->gpio_nreset = gpio_nreset;
+	gpiod_set_consumer_name(priv->reset_gpio, "TAS5086 Reset");
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
 	if (ret < 0) {
-- 
2.38.1.431.g37b22c650d-goog