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ASoC: cs42l51: add power management 

Add sleep PM callbacks to support system low power modes.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Olivier Moysan 2019-04-03 15:23:36 +02:00 committed by Mark Brown
parent 2f7c4ce09a
commit 75a714823e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 129 additions and 2 deletions
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7
sound/soc/codecs/cs42l51-i2c.c
View File

@ -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,

122
sound/soc/codecs/cs42l51.c
View File

@ -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", },
{ }

2
sound/soc/codecs/cs42l51.h
View File

@ -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