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ASoC: nau8821: Add delay control for ADC

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Change the original fixed delay to the assignment from the property.
It will make it more flexible to different platforms to avoid pop
noise at the beginning of recording.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
Link: https://lore.kernel.org/r/20240415070649.3496487-3-wtli@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Seven Lee 2024-04-15 15:06:48 +08:00 committed by Mark Brown
parent 467d2528d6
commit b37fdd42c0
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GPG Key ID: 24D68B725D5487D0
2 changed files with 10 additions and 2 deletions
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11
sound/soc/codecs/nau8821.c
View File

@ -511,7 +511,7 @@ static int nau8821_left_adc_event(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(125);
msleep(nau8821->adc_delay);
regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL,
NAU8821_EN_ADCL, NAU8821_EN_ADCL);
break;
@ -535,7 +535,7 @@ static int nau8821_right_adc_event(struct snd_soc_dapm_widget *w,
switch (event) {
case SND_SOC_DAPM_POST_PMU:
msleep(125);
msleep(nau8821->adc_delay);
regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL,
NAU8821_EN_ADCR, NAU8821_EN_ADCR);
break;
@ -1697,6 +1697,7 @@ static void nau8821_print_device_properties(struct nau8821 *nau8821)
dev_dbg(dev, "dmic-clk-threshold: %d\n",
nau8821->dmic_clk_threshold);
dev_dbg(dev, "key_enable: %d\n", nau8821->key_enable);
dev_dbg(dev, "adc-delay-ms: %d\n", nau8821->adc_delay);
}
static int nau8821_read_device_properties(struct device *dev,
@ -1742,6 +1743,12 @@ static int nau8821_read_device_properties(struct device *dev,
&nau8821->dmic_slew_rate);
if (ret)
nau8821->dmic_slew_rate = 0;
ret = device_property_read_u32(dev, "nuvoton,adc-delay-ms",
&nau8821->adc_delay);
if (ret)
nau8821->adc_delay = 125;
if (nau8821->adc_delay < 125 || nau8821->adc_delay > 500)
dev_warn(dev, "Please set the suitable delay time!\n");
return 0;
}

1
sound/soc/codecs/nau8821.h
View File

@ -577,6 +577,7 @@ struct nau8821 {
int dmic_clk_threshold;
int dmic_slew_rate;
int key_enable;
int adc_delay;
};
int nau8821_enable_jack_detect(struct snd_soc_component *component,