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ASoC: maxim,max9867: add "mclk" support

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Add basic support for the codecs' mclk.
Enable it on SND_SOC_BIAS_ON, disable it on SND_SOC_BIAS_OFF.

Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Link: https://lore.kernel.org/r/20230302-max9867-v2-3-fd2036d5e825@skidata.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Benjamin Bara 2023-03-03 11:04:03 +01:00 committed by Mark Brown
parent d63e55b3e8
commit 448b06ba10
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 17 additions and 2 deletions
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19
sound/soc/codecs/max9867.c
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@ -6,6 +6,7 @@
// Copyright 2018 Ladislav Michl <ladis@linux-mips.org>
//
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/module.h>
@ -16,6 +17,7 @@
#include "max9867.h"
struct max9867_priv {
struct clk *mclk;
struct regmap *regmap;
const struct snd_pcm_hw_constraint_list *constraints;
unsigned int sysclk, pclk;
@ -577,6 +579,11 @@ static int max9867_set_bias_level(struct snd_soc_component *component,
struct max9867_priv *max9867 = snd_soc_component_get_drvdata(component);
switch (level) {
case SND_SOC_BIAS_ON:
err = clk_prepare_enable(max9867->mclk);
if (err)
return err;
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
err = regcache_sync(max9867->regmap);
@ -595,6 +602,7 @@ static int max9867_set_bias_level(struct snd_soc_component *component,
return err;
regcache_mark_dirty(max9867->regmap);
clk_disable_unprepare(max9867->mclk);
break;
default:
break;
@ -663,9 +671,16 @@ static int max9867_i2c_probe(struct i2c_client *i2c)
dev_info(&i2c->dev, "device revision: %x\n", reg);
ret = devm_snd_soc_register_component(&i2c->dev, &max9867_component,
max9867_dai, ARRAY_SIZE(max9867_dai));
if (ret < 0)
if (ret < 0) {
dev_err(&i2c->dev, "Failed to register component: %d\n", ret);
return ret;
return ret;
}
max9867->mclk = devm_clk_get(&i2c->dev, NULL);
if (IS_ERR(max9867->mclk))
return PTR_ERR(max9867->mclk);
return 0;
}
static const struct i2c_device_id max9867_i2c_id[] = {