From: Abhijeet Kumar abhijeet.kumar@intel.com
[ 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: Abhijeet Kumar abhijeet.kumar@intel.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- sound/soc/codecs/nau8825.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index f9f2737c4ad2..a4871c4adcb0 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -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;