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Message-ID: <20250901035956.1195081-1-alex.t.tran@gmail.com>
Date: Sun, 31 Aug 2025 20:59:56 -0700
From: Alex Tran <alex.t.tran@...il.com>
To: broonie@...nel.org
Cc: lgirdwood@...il.com,
tiwai@...e.com,
perex@...ex.cz,
shenghao-ding@...com,
kevin-lu@...com,
baojun.xu@...com,
linus.walleij@...aro.org,
brgl@...ev.pl,
linux-sound@...r.kernel.org,
linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org,
Alex Tran <alex.t.tran@...il.com>
Subject: [PATCH v2] ASoC: codecs: tlv320dac33: switch to gpiod api
Changelog:
- Changed reset GPIO setup that uses 'gpio_request' and
'gpio_direction_output' to use 'devm_gpio_request_one' instead
for legacy support.
- Convert to gpio descriptor for use.
- Better error handling with 'gpiod_set_value'.
- Removed cleanup of reset gpio as gpiod api is now used.
- Performed full conversion to gpiod with 'devm_gpiod_get_optional'.
- Removed struct 'tlv320dac33_platform_data' as it is
not used in the kernel.
- Removed file 'tlv320dac33-plat.h' as it was not included
anywhere outside this driver.
- Removed 'power_gpio' and added 'reset_gpiod'.
- Added default value for dac33->burst_bclkdiv as it can't be 0 (2-17).
See <https://www.ti.com/lit/ds/symlink/tlv320dac32.pdf>
Signed-off-by: Alex Tran <alex.t.tran@...il.com>
---
include/sound/tlv320dac33-plat.h | 21 ----------
sound/soc/codecs/tlv320dac33.c | 68 +++++++++++++++-----------------
2 files changed, 31 insertions(+), 58 deletions(-)
delete mode 100644 include/sound/tlv320dac33-plat.h
diff --git a/include/sound/tlv320dac33-plat.h b/include/sound/tlv320dac33-plat.h
deleted file mode 100644
index 7a7249a89..000000000
--- a/include/sound/tlv320dac33-plat.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Platform header for Texas Instruments TLV320DAC33 codec driver
- *
- * Author: Peter Ujfalusi <peter.ujfalusi@...com>
- *
- * Copyright: (C) 2009 Nokia Corporation
- */
-
-#ifndef __TLV320DAC33_PLAT_H
-#define __TLV320DAC33_PLAT_H
-
-struct tlv320dac33_platform_data {
- int power_gpio;
- int mode1_latency; /* latency caused by the i2c writes in us */
- int auto_fifo_config; /* FIFO config based on the period size */
- int keep_bclk; /* Keep the BCLK running in FIFO modes */
- u8 burst_bclkdiv;
-};
-
-#endif /* __TLV320DAC33_PLAT_H */
diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index 423b9264a..43d372dd6 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -14,7 +14,7 @@
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
@@ -24,7 +24,6 @@
#include <sound/initval.h>
#include <sound/tlv.h>
-#include <sound/tlv320dac33-plat.h>
#include "tlv320dac33.h"
/*
@@ -80,7 +79,7 @@ struct tlv320dac33_priv {
struct snd_soc_component *component;
struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
struct snd_pcm_substream *substream;
- int power_gpio;
+ struct gpio_desc *reset_gpiod;
int chip_power;
int irq;
unsigned int refclk;
@@ -383,14 +382,26 @@ static int dac33_hard_power(struct snd_soc_component *component, int power)
goto exit;
}
- if (dac33->power_gpio >= 0)
- gpio_set_value(dac33->power_gpio, 1);
+ if (dac33->reset_gpiod) {
+ ret = gpiod_set_value(dac33->reset_gpiod, 1);
+ if (ret < 0) {
+ dev_err(&dac33->i2c->dev,
+ "Failed to set reset GPIO: %d\n", ret);
+ goto exit;
+ }
+ }
dac33->chip_power = 1;
} else {
dac33_soft_power(component, 0);
- if (dac33->power_gpio >= 0)
- gpio_set_value(dac33->power_gpio, 0);
+ if (dac33->reset_gpiod) {
+ ret = gpiod_set_value(dac33->reset_gpiod, 0);
+ if (ret < 0) {
+ dev_err(&dac33->i2c->dev,
+ "Failed to set reset GPIO: %d\n", ret);
+ goto exit;
+ }
+ }
ret = regulator_bulk_disable(ARRAY_SIZE(dac33->supplies),
dac33->supplies);
@@ -1462,16 +1473,9 @@ static struct snd_soc_dai_driver dac33_dai = {
static int dac33_i2c_probe(struct i2c_client *client)
{
- struct tlv320dac33_platform_data *pdata;
struct tlv320dac33_priv *dac33;
int ret, i;
- if (client->dev.platform_data == NULL) {
- dev_err(&client->dev, "Platform data not set\n");
- return -ENODEV;
- }
- pdata = client->dev.platform_data;
-
dac33 = devm_kzalloc(&client->dev, sizeof(struct tlv320dac33_priv),
GFP_KERNEL);
if (dac33 == NULL)
@@ -1488,26 +1492,21 @@ static int dac33_i2c_probe(struct i2c_client *client)
i2c_set_clientdata(client, dac33);
- dac33->power_gpio = pdata->power_gpio;
- dac33->burst_bclkdiv = pdata->burst_bclkdiv;
- dac33->keep_bclk = pdata->keep_bclk;
- dac33->mode1_latency = pdata->mode1_latency;
+ if (!dac33->burst_bclkdiv)
+ dac33->burst_bclkdiv = 8;
if (!dac33->mode1_latency)
dac33->mode1_latency = 10000; /* 10ms */
dac33->irq = client->irq;
/* Disable FIFO use by default */
dac33->fifo_mode = DAC33_FIFO_BYPASS;
- /* Check if the reset GPIO number is valid and request it */
- if (dac33->power_gpio >= 0) {
- ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset");
- if (ret < 0) {
- dev_err(&client->dev,
- "Failed to request reset GPIO (%d)\n",
- dac33->power_gpio);
- goto err_gpio;
- }
- gpio_direction_output(dac33->power_gpio, 0);
+ /* request optional reset GPIO */
+ dac33->reset_gpiod =
+ devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(dac33->reset_gpiod)) {
+ dev_err_probe(&client->dev, PTR_ERR(dac33->reset_gpiod),
+ "Failed to get reset GPIO\n");
+ goto err;
}
for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
@@ -1518,19 +1517,17 @@ static int dac33_i2c_probe(struct i2c_client *client)
if (ret != 0) {
dev_err(&client->dev, "Failed to request supplies: %d\n", ret);
- goto err_get;
+ goto err;
}
ret = devm_snd_soc_register_component(&client->dev,
&soc_component_dev_tlv320dac33, &dac33_dai, 1);
if (ret < 0)
- goto err_get;
+ goto err;
return ret;
-err_get:
- if (dac33->power_gpio >= 0)
- gpio_free(dac33->power_gpio);
-err_gpio:
+
+err:
return ret;
}
@@ -1540,9 +1537,6 @@ static void dac33_i2c_remove(struct i2c_client *client)
if (unlikely(dac33->chip_power))
dac33_hard_power(dac33->component, 0);
-
- if (dac33->power_gpio >= 0)
- gpio_free(dac33->power_gpio);
}
static const struct i2c_device_id tlv320dac33_i2c_id[] = {
--
2.51.0
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