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Commit 1ec97b2a authored by Abhijeet Kumar's avatar Abhijeet Kumar Committed by Greg Kroah-Hartman
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ASoC: nau8825: fix issue that pop noise when start capture 




[ Upstream commit d070f7c703ef26e3db613f24206823f916272fc6 ]

In skylake platform, we hear a loud pop noise(0 dB) at start of
audio capture power up sequence. This patch removes the pop noise
from the recording by adding a delay before enabling ADC.

Signed-off-by: default avatarAbhijeet Kumar <abhijeet.kumar@intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 90f7d14c

sound/soc/codecs/nau8825.c

+1 −0
Original line number Diff line number Diff line
@@ -882,6 +882,7 @@ static int nau8825_adc_event(struct snd_soc_dapm_widget *w, 


	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		msleep(125);

		regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,

			NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);

		break;