Simplifying the mixer

[Joerg Reisenweber]

Am Mi  11. Juni 2008 schrieb Mike Montour:
> For example, consider the controls called "Headphone" and "Speaker". 
> Neither label is correct for the GTA01 - "Headphone" is actually 
> LOUT1/ROUT1 and controls all audio from the WM8753 to the LM4857 chip, 
> while "Speaker" is LOUT2/ROUT2 and is N/C.

LOUT2/ROUT2 is handset earpiece (aka receiver).
LOUT1/ROUT1 is routing to external amp, which there is switching between 
headset-stereo and device-speaker-mono(GTA02)/stereo(GTA01) via 
cpu-GPIO[HP_IN]. (what also is a function I expect to see in alsa-driver of 
our "OEM-card", but surely NOT in WM8753-alsa-driver)

NC: OUT3 OUT4

MONO1, MONO2: differential output routing to mic analog in of GSM

and while I'm writing...
MIC2,MIC2N: diff. input from handset mic
MIC1,MIC1N: "differential" Input from headset (ring3 jack, MIC1N:GND via 100N)
RXP,RXN: diff. input from GSM analog "earpiece" output
ACOP->AIN via 100N
LINE1, LINE2: to testpoint H-TP3001/2, NC
VXD: digital PCM to BT (mono only?)
DACDAT, ADCDAT: to cpu via IIS


HTH
/jOERG
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