linux-kernel - [PATCH 2/2] ASoC: codec: tlv320aic32x4: Convert to GPIO descriptors

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Message-Id: <20250706-asoc-gpio-1-v1-2-f0912095e923@nxp.com>
Date: Sun, 06 Jul 2025 09:04:24 +0800
From: Peng Fan <peng.fan@....com>
To: Shenghao Ding <shenghao-ding@...com>, Kevin Lu <kevin-lu@...com>, 
 Baojun Xu <baojun.xu@...com>, Jaroslav Kysela <perex@...ex.cz>, 
 Takashi Iwai <tiwai@...e.com>, Liam Girdwood <lgirdwood@...il.com>, 
 Mark Brown <broonie@...nel.org>, Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, Peng Fan <peng.fan@....com>, 
 Markus Niebel <Markus.Niebel@...tq-group.com>, 
 Alexander Stein <alexander.stein@...tq-group.com>
Subject: [PATCH 2/2] ASoC: codec: tlv320aic32x4: 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, and set consumer
   name.
 - Use gpiod_set_value to configure output value.

While at here, reorder the included headers.

Checking the DTS that use the device, all are using GPIOD_ACTIVE_LOW
polarity for reset-gpios, so all should work as expected with this patch.

Cc: Markus Niebel <Markus.Niebel@...tq-group.com>
Cc: Alexander Stein <alexander.stein@...tq-group.com>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 sound/soc/codecs/tlv320aic32x4.c | 44 ++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 22 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index 7dbcf7f7130b04a27f58f20beb83eb3676c79c3d..1423186f5a6c181a20dd2dd552679d33174edaee 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -9,27 +9,26 @@
  * Based on sound/soc/codecs/wm8974 and TI driver for kernel 2.6.27.
  */
 
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/pm.h>
-#include <linux/gpio.h>
-#include <linux/of_gpio.h>
 #include <linux/cdev.h>
-#include <linux/slab.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
 #include <linux/of_clk.h>
+#include <linux/pm.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
 
-#include <sound/tlv320aic32x4.h>
 #include <sound/core.h>
+#include <sound/initval.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
-#include <sound/initval.h>
 #include <sound/tlv.h>
+#include <sound/tlv320aic32x4.h>
 
 #include "tlv320aic32x4.h"
 
@@ -38,7 +37,7 @@ struct aic32x4_priv {
 	u32 power_cfg;
 	u32 micpga_routing;
 	bool swapdacs;
-	int rstn_gpio;
+	struct gpio_desc *rstn_gpio;
 	const char *mclk_name;
 
 	struct regulator *supply_ldo;
@@ -1236,7 +1235,14 @@ static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
 
 	aic32x4->swapdacs = false;
 	aic32x4->micpga_routing = 0;
-	aic32x4->rstn_gpio = of_get_named_gpio(np, "reset-gpios", 0);
+	/* Assert reset using GPIOD_OUT_HIGH, because reset is GPIO_ACTIVE_LOW */
+	aic32x4->rstn_gpio = devm_gpiod_get_optional(aic32x4->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(aic32x4->rstn_gpio)) {
+		return dev_err_probe(aic32x4->dev, PTR_ERR(aic32x4->rstn_gpio),
+				     "Failed to get reset gpio\n");
+	} else {
+		gpiod_set_consumer_name(aic32x4->rstn_gpio, "tlv320aic32x4_rstn");
+	}
 
 	if (of_property_read_u32_array(np, "aic32x4-gpio-func",
 				aic32x4_setup->gpio_func, 5) >= 0)
@@ -1372,26 +1378,20 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap,
 		aic32x4->power_cfg = 0;
 		aic32x4->swapdacs = false;
 		aic32x4->micpga_routing = 0;
-		aic32x4->rstn_gpio = -1;
+		aic32x4->rstn_gpio = ERR_PTR(-ENOENT);
 		aic32x4->mclk_name = "mclk";
 	}
 
-	if (gpio_is_valid(aic32x4->rstn_gpio)) {
-		ret = devm_gpio_request_one(dev, aic32x4->rstn_gpio,
-				GPIOF_OUT_INIT_LOW, "tlv320aic32x4 rstn");
-		if (ret != 0)
-			return ret;
-	}
-
 	ret = aic32x4_setup_regulators(dev, aic32x4);
 	if (ret) {
 		dev_err(dev, "Failed to setup regulators\n");
 		return ret;
 	}
 
-	if (gpio_is_valid(aic32x4->rstn_gpio)) {
+	if (!IS_ERR(aic32x4->rstn_gpio)) {
 		ndelay(10);
-		gpio_set_value_cansleep(aic32x4->rstn_gpio, 1);
+		/* deassert reset */
+		gpiod_set_value_cansleep(aic32x4->rstn_gpio, 0);
 		mdelay(1);
 	}
 

-- 
2.37.1