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

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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>
This commit is contained in:
Jiaxin Yu 2020-11-11 10:45:22 +08:00 committed by Mark Brown
parent 6b0e12a5c6
commit 2aff94e47d
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2 changed files with 4 additions and 1 deletions
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1
sound/soc/mediatek/Kconfig
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@ -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.

4
sound/soc/mediatek/mt8192/mt8192-mt6359-rt1015-rt5682.c
View File

@ -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,