Unverified Commit 5b428879 authored by Ivaylo Dimitrov's avatar Ivaylo Dimitrov Committed by Mark Brown
Browse files

ASoC: cpcap: Implement .set_bias_level 



With VAUDIO regulator being always on, we have to put it in low-power mode
when codec is not in use to decrease power usage.

Do so by implementing driver .set_bias_level callback.

Signed-off-by: default avatarIvaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Link: https://patch.msgid.link/20250122164129.807247-3-ivo.g.dimitrov.75@gmail.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2014c95a

sound/soc/codecs/cpcap.c

+29 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/module.h>

#include <linux/regmap.h>

#include <linux/platform_device.h>

#include <linux/regulator/consumer.h>

#include <linux/mfd/motorola-cpcap.h>

#include <sound/core.h>

#include <sound/soc.h>
@@ -260,6 +261,7 @@ struct cpcap_audio { 
	int codec_clk_id;

	int codec_freq;

	int codec_format;

	struct regulator *vaudio;

};



static int cpcap_st_workaround(struct snd_soc_dapm_widget *w,
@@ -1637,6 +1639,11 @@ static int cpcap_soc_probe(struct snd_soc_component *component) 
	snd_soc_component_set_drvdata(component, cpcap);

	cpcap->component = component;



	cpcap->vaudio = devm_regulator_get(component->dev, "VAUDIO");

	if (IS_ERR(cpcap->vaudio))

		return dev_err_probe(component->dev, PTR_ERR(cpcap->vaudio),

				     "Cannot get VAUDIO regulator\n");



	cpcap->regmap = dev_get_regmap(component->dev->parent, NULL);

	if (!cpcap->regmap)

		return -ENODEV;
@@ -1649,6 +1656,27 @@ static int cpcap_soc_probe(struct snd_soc_component *component) 
	return cpcap_audio_reset(component, false);

}



static int cpcap_set_bias_level(struct snd_soc_component *component,

		enum snd_soc_bias_level level)

{

	struct cpcap_audio *cpcap = snd_soc_component_get_drvdata(component);



	switch (level) {

	case SND_SOC_BIAS_OFF:

		break;

	case SND_SOC_BIAS_PREPARE:

		regulator_set_mode(cpcap->vaudio, REGULATOR_MODE_NORMAL);

		break;

	case SND_SOC_BIAS_STANDBY:

		regulator_set_mode(cpcap->vaudio, REGULATOR_MODE_STANDBY);

		break;

	case SND_SOC_BIAS_ON:

		break;

	}



	return 0;

}



static const struct snd_soc_component_driver soc_codec_dev_cpcap = {

	.probe			= cpcap_soc_probe,

	.controls		= cpcap_snd_controls,
@@ -1657,6 +1685,7 @@ static const struct snd_soc_component_driver soc_codec_dev_cpcap = { 
	.num_dapm_widgets	= ARRAY_SIZE(cpcap_dapm_widgets),

	.dapm_routes		= intercon,

	.num_dapm_routes	= ARRAY_SIZE(intercon),

	.set_bias_level		= cpcap_set_bias_level,

	.idle_bias_on		= 1,

	.use_pmdown_time	= 1,

	.endianness		= 1,