Unverified Commit 448b06ba authored by Benjamin Bara's avatar Benjamin Bara Committed by Mark Brown
Browse files

ASoC: maxim,max9867: add "mclk" support 



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

Signed-off-by: default avatarBenjamin Bara <benjamin.bara@skidata.com>
Signed-off-by: default avatarRichard Leitner <richard.leitner@skidata.com>
Link: https://lore.kernel.org/r/20230302-max9867-v2-3-fd2036d5e825@skidata.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d63e55b3

sound/soc/codecs/max9867.c

+17 −2
Original line number Diff line number Diff line
@@ -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;
@@ -663,11 +671,18 @@ 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;

	}



	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[] = {

	{ "max9867", 0 },

	{ }