Unverified Commit 75a71482 authored by Olivier Moysan's avatar Olivier Moysan Committed by Mark Brown
Browse files

ASoC: cs42l51: add power management 



Add sleep PM callbacks to support system low power modes.

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@st.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 2f7c4ce0

sound/soc/codecs/cs42l51-i2c.c

+5 −2
Original line number Diff line number Diff line
@@ -29,8 +29,6 @@ static int cs42l51_i2c_probe(struct i2c_client *i2c, 
	struct regmap_config config;



	config = cs42l51_regmap;

	config.val_bits = 8;

	config.reg_bits = 8;



	return cs42l51_probe(&i2c->dev, devm_regmap_init_i2c(i2c, &config));

}
@@ -40,10 +38,15 @@ static int cs42l51_i2c_remove(struct i2c_client *i2c) 
	return cs42l51_remove(&i2c->dev);

}



static const struct dev_pm_ops cs42l51_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(cs42l51_suspend, cs42l51_resume)

};



static struct i2c_driver cs42l51_i2c_driver = {

	.driver = {

		.name = "cs42l51",

		.of_match_table = cs42l51_of_match,

		.pm = &cs42l51_pm_ops,

	},

	.probe = cs42l51_i2c_probe,

	.remove = cs42l51_i2c_remove,

sound/soc/codecs/cs42l51.c

+122 −0
Original line number Diff line number Diff line
@@ -56,6 +56,7 @@ struct cs42l51_private { 
	enum master_slave_mode func;

	struct regulator_bulk_data supplies[ARRAY_SIZE(cs42l51_supply_names)];

	struct gpio_desc *reset_gpio;

	struct regmap *regmap;

};



#define CS42L51_FORMATS ( \
@@ -575,7 +576,106 @@ static const struct snd_soc_component_driver soc_component_device_cs42l51 = { 
	.non_legacy_dai_naming	= 1,

};



static bool cs42l51_writeable_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {

	case CS42L51_POWER_CTL1:

	case CS42L51_MIC_POWER_CTL:

	case CS42L51_INTF_CTL:

	case CS42L51_MIC_CTL:

	case CS42L51_ADC_CTL:

	case CS42L51_ADC_INPUT:

	case CS42L51_DAC_OUT_CTL:

	case CS42L51_DAC_CTL:

	case CS42L51_ALC_PGA_CTL:

	case CS42L51_ALC_PGB_CTL:

	case CS42L51_ADCA_ATT:

	case CS42L51_ADCB_ATT:

	case CS42L51_ADCA_VOL:

	case CS42L51_ADCB_VOL:

	case CS42L51_PCMA_VOL:

	case CS42L51_PCMB_VOL:

	case CS42L51_BEEP_FREQ:

	case CS42L51_BEEP_VOL:

	case CS42L51_BEEP_CONF:

	case CS42L51_TONE_CTL:

	case CS42L51_AOUTA_VOL:

	case CS42L51_AOUTB_VOL:

	case CS42L51_PCM_MIXER:

	case CS42L51_LIMIT_THRES_DIS:

	case CS42L51_LIMIT_REL:

	case CS42L51_LIMIT_ATT:

	case CS42L51_ALC_EN:

	case CS42L51_ALC_REL:

	case CS42L51_ALC_THRES:

	case CS42L51_NOISE_CONF:

	case CS42L51_CHARGE_FREQ:

		return true;

	default:

		return false;

	}

}



static bool cs42l51_volatile_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {

	case CS42L51_STATUS:

		return true;

	default:

		return false;

	}

}



static bool cs42l51_readable_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {

	case CS42L51_CHIP_REV_ID:

	case CS42L51_POWER_CTL1:

	case CS42L51_MIC_POWER_CTL:

	case CS42L51_INTF_CTL:

	case CS42L51_MIC_CTL:

	case CS42L51_ADC_CTL:

	case CS42L51_ADC_INPUT:

	case CS42L51_DAC_OUT_CTL:

	case CS42L51_DAC_CTL:

	case CS42L51_ALC_PGA_CTL:

	case CS42L51_ALC_PGB_CTL:

	case CS42L51_ADCA_ATT:

	case CS42L51_ADCB_ATT:

	case CS42L51_ADCA_VOL:

	case CS42L51_ADCB_VOL:

	case CS42L51_PCMA_VOL:

	case CS42L51_PCMB_VOL:

	case CS42L51_BEEP_FREQ:

	case CS42L51_BEEP_VOL:

	case CS42L51_BEEP_CONF:

	case CS42L51_TONE_CTL:

	case CS42L51_AOUTA_VOL:

	case CS42L51_AOUTB_VOL:

	case CS42L51_PCM_MIXER:

	case CS42L51_LIMIT_THRES_DIS:

	case CS42L51_LIMIT_REL:

	case CS42L51_LIMIT_ATT:

	case CS42L51_ALC_EN:

	case CS42L51_ALC_REL:

	case CS42L51_ALC_THRES:

	case CS42L51_NOISE_CONF:

	case CS42L51_STATUS:

	case CS42L51_CHARGE_FREQ:

		return true;

	default:

		return false;

	}

}



const struct regmap_config cs42l51_regmap = {

	.reg_bits = 8,

	.reg_stride = 1,

	.val_bits = 8,

	.use_single_write = true,

	.readable_reg = cs42l51_readable_reg,

	.volatile_reg = cs42l51_volatile_reg,

	.writeable_reg = cs42l51_writeable_reg,

	.max_register = CS42L51_CHARGE_FREQ,

	.cache_type = REGCACHE_RBTREE,

};
@@ -596,6 +696,7 @@ int cs42l51_probe(struct device *dev, struct regmap *regmap) 
		return -ENOMEM;



	dev_set_drvdata(dev, cs42l51);

	cs42l51->regmap = regmap;



	cs42l51->mclk_handle = devm_clk_get(dev, "MCLK");

	if (IS_ERR(cs42l51->mclk_handle)) {
@@ -673,6 +774,27 @@ int cs42l51_remove(struct device *dev) 
}

EXPORT_SYMBOL_GPL(cs42l51_remove);



int __maybe_unused cs42l51_suspend(struct device *dev)

{

	struct cs42l51_private *cs42l51 = dev_get_drvdata(dev);



	regcache_cache_only(cs42l51->regmap, true);

	regcache_mark_dirty(cs42l51->regmap);



	return 0;

}

EXPORT_SYMBOL_GPL(cs42l51_suspend);



int __maybe_unused cs42l51_resume(struct device *dev)

{

	struct cs42l51_private *cs42l51 = dev_get_drvdata(dev);



	regcache_cache_only(cs42l51->regmap, false);



	return regcache_sync(cs42l51->regmap);

}

EXPORT_SYMBOL_GPL(cs42l51_resume);



const struct of_device_id cs42l51_of_match[] = {

	{ .compatible = "cirrus,cs42l51", },

	{ }

sound/soc/codecs/cs42l51.h

+2 −0
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ struct device; 
extern const struct regmap_config cs42l51_regmap;

int cs42l51_probe(struct device *dev, struct regmap *regmap);

int cs42l51_remove(struct device *dev);

int __maybe_unused cs42l51_suspend(struct device *dev);

int __maybe_unused cs42l51_resume(struct device *dev);

extern const struct of_device_id cs42l51_of_match[];



#define CS42L51_CHIP_ID			0x1B