diff options
| author | David Lin <CTLIN0@nuvoton.com> | 2023-05-23 11:33:04 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-05-23 12:58:31 +0300 |
| commit | f9d790c578d4e0f715213cc7f2f6f2b0d2d91988 (patch) | |
| tree | 7689058023e8cc95543f22dc20a2e9655524f29c /sound/soc/codecs/nau8825.c | |
| parent | 1d4a84632b90d88316986b05bcdfe715399a33db (diff) | |
| download | linux-f9d790c578d4e0f715213cc7f2f6f2b0d2d91988.tar.xz | |
ASoC: nau8825: Add pre-charge actions for input
Adding pre-charge actions to make FEPGA power stable faster. It
improve the recording quality at the beginning. Thus, it is also
meaningfully to decrease the final adc delay time.
Signed-off-by: David Lin <CTLIN0@nuvoton.com>
Link: https://lore.kernel.org/r/20230523083303.98436-1-CTLIN0@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/nau8825.c')
| -rw-r--r-- | sound/soc/codecs/nau8825.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 775c8e0cb09e..cc3e18207c42 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -911,6 +911,32 @@ static bool nau8825_volatile_reg(struct device *dev, unsigned int reg) } } +static int nau8825_fepga_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA, + NAU8825_ACDC_CTRL_MASK, + NAU8825_ACDC_VREF_MICP | NAU8825_ACDC_VREF_MICN); + regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, + NAU8825_DISCHRG_EN, NAU8825_DISCHRG_EN); + msleep(40); + regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST, + NAU8825_DISCHRG_EN, 0); + regmap_update_bits(nau8825->regmap, NAU8825_REG_FEPGA, + NAU8825_ACDC_CTRL_MASK, 0); + break; + default: + break; + } + + return 0; +} + static int nau8825_adc_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { @@ -1127,8 +1153,8 @@ static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = { SND_SOC_DAPM_INPUT("MIC"), SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0), - SND_SOC_DAPM_PGA("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0, - NULL, 0), + SND_SOC_DAPM_PGA_E("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0, + NULL, 0, nau8825_fepga_event, SND_SOC_DAPM_POST_PMU), SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0, nau8825_adc_event, SND_SOC_DAPM_POST_PMU | |