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ASoC: ak4458: add optional reset control to instead of gpio

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Add optional reset control instead of GPIO to manage codec
PDN pin.

As there is reference counter for reset control, so need
to remove one ak4458_reset in runtime resume to make the
reference counter balance.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1665664611-21350-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Viorel Suman
2022-10-13 20:36:51 +08:00
committed by Mark Brown
parent 29dbfeecab
commit 8a0de73cf9
1 changed files with 12 additions and 1 deletions
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13
sound/soc/codecs/ak4458.c
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@@ -13,6 +13,7 @@
#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
@@ -46,6 +47,7 @@ struct ak4458_priv {
struct device *dev;
struct regmap *regmap;
struct gpio_desc *reset_gpiod;
struct reset_control *reset;
struct gpio_desc *mute_gpiod;
int digfil; /* SSLOW, SD, SLOW bits */
int fs; /* sampling rate */
@@ -633,6 +635,12 @@ static void ak4458_reset(struct ak4458_priv *ak4458, bool active)
if (ak4458->reset_gpiod) {
gpiod_set_value_cansleep(ak4458->reset_gpiod, active);
usleep_range(1000, 2000);
} else if (!IS_ERR_OR_NULL(ak4458->reset)) {
if (active)
reset_control_assert(ak4458->reset);
else
reset_control_deassert(ak4458->reset);
usleep_range(1000, 2000);
}
}
@@ -668,7 +676,6 @@ static int __maybe_unused ak4458_runtime_resume(struct device *dev)
if (ak4458->mute_gpiod)
gpiod_set_value_cansleep(ak4458->mute_gpiod, 1);
ak4458_reset(ak4458, true);
ak4458_reset(ak4458, false);
regcache_cache_only(ak4458->regmap, false);
@@ -748,6 +755,10 @@ static int ak4458_i2c_probe(struct i2c_client *i2c)
ak4458->drvdata = of_device_get_match_data(&i2c->dev);
ak4458->reset = devm_reset_control_get_optional_shared(ak4458->dev, NULL);
if (IS_ERR(ak4458->reset))
return PTR_ERR(ak4458->reset);
ak4458->reset_gpiod = devm_gpiod_get_optional(ak4458->dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(ak4458->reset_gpiod))