#0=0db, 1=6.6db, 2=13dB, 3=20db
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amixer cset -c 0 name="ADC MIC Group 2 Left Volume" 3
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amixer cset -c 0 name="ADC MIC Group 3 Left Volume" 3
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amixer cset -c 0 name="ADC MIC Group 2 Right Volume" 3
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amixer cset -c 0 name="ADC MIC Group 3 Right Volume" 3
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#12=0dB 18=9db
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amixer cset -c 0 name="ADC ALC Group 2 Left Volume" 16
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amixer cset -c 0 name="ADC ALC Group 3 Left Volume" 16
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amixer cset -c 0 name="ADC ALC Group 2 Right Volume" 16
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amixer cset -c 0 name="ADC ALC Group 3 Right Volume" 16
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#loop back gain
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amixer cset -c 0 name="ADC ALC Group 0 Left Volume" 17
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# lineout gain
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#0=490mv，1=890mv
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amixer cset -c 0 name='DAC LINEOUT Right Volume' 3
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amixer cset -c 0 name='DAC LINEOUT Left Volume' 3
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amixer cset -c 0 name='DAC HPMIX Left Volume' 1
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amixer cset -c 0 name='DAC HPMIX Right Volume' 1
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vol=70
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amixer set Master Playback $vol
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