[alsa-devel] ASoC: How to declare volume TLV dB scale?

Sergej Sawazki ce3a at gmx.de
Fri Jun 12 14:02:52 CEST 2015


Dear all,
 
could someone please help me to understand the mixer controls TLV scale?
What would be the DECLARE_TLV_DB_SCALE values for the following example?
 
reg. value:  0    ..  0x3ff
phys. value: 0dB  .. -128dB
volume:      100% ..  0%(mute)

What does TLV actually stand for?

Many thanks in advance,
Sergej Sawazki


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