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

Peng Fan posted 2 patches 3 months ago
There is a newer version of this series
[PATCH 2/2] ASoC: codec: tlv320aic32x4: Convert to GPIO descriptors
Posted by Peng Fan 3 months ago 
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@ew.tq-group.com>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Peng Fan <peng.fan@nxp.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
Re: [PATCH 2/2] ASoC: codec: tlv320aic32x4: Convert to GPIO descriptors
Posted by Alexander Stein 3 months ago 
Hi,

Am Sonntag, 6. Juli 2025, 03:04:24 CEST schrieb Peng Fan:
> 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@ew.tq-group.com>
> Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Peng Fan <peng.fan@nxp.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>

Mh, maybe create a single commit sorting these headers.

>  
>  #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);

Shouldn't this be NULL similar to when devm_gpiod_get_optional() doesn't
find any reset GPIO?

Despite that, looks good and works as intended:
Tested-By: Alexander Stein <alexander.stein@ew.tq-group.com>

>  		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);
>  	}
>  
> 
> 


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