Unverified Commit 2aff94e4 authored Nov 11, 2020 by Jiaxin Yu Committed by Mark Brown Nov 11, 2020

ASoC: mediatek: mt8192: skip first time data at the beginning of DMIC recording

We can choose to drop away any length of data from the beginning according
to project needs. Some projects don't want to throw away any data, because
they want to use recorded data to do echo cancellation, so they have to
make sure that they are aligned with the reference data as much as
possible. Or there are other algorithms in the upper layer to eliminate
this noise. Or some projects want to eliminate this noise form the kernel
layer. However, the minimum recommended value is 50ms to skip pop noise.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/1605062722-8711-1-git-send-email-jiaxin.yu@mediatek.com

Signed-off-by: Mark Brown <broonie@kernel.org>

parent 6b0e12a5

sound/soc/mediatek/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -176,6 +176,7 @@ config SND_SOC_MT8192_MT6359_RT1015_RT5682
		select SND_SOC_MT6359
		select SND_SOC_RT1015
		select SND_SOC_RT5682_I2C
		select SND_SOC_DMIC
		help
		This adds ASoC driver for Mediatek MT8192 boards
		with the MT6359 RT1015 RT5682 audio codec.

sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -540,7 +540,9 @@ SND_SOC_DAILINK_DEFS(playback_hdmi,
		SND_SOC_DAILINK_DEFS(primary_codec,
		DAILINK_COMP_ARRAY(COMP_CPU("ADDA")),
		DAILINK_COMP_ARRAY(COMP_CODEC("mt6359-sound",
		"mt6359-snd-codec-aif1")),
		"mt6359-snd-codec-aif1"),
		COMP_CODEC("dmic-codec",
		"dmic-hifi")),
		DAILINK_COMP_ARRAY(COMP_EMPTY()));

		SND_SOC_DAILINK_DEFS(primary_codec_ch34,

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