#1829 HIGH Trial-2: Control of VREF_OUT and HPF is coupled to Analog Input control
Zarro Boogs per Child
bugtracker at laptop.org
Wed Jun 27 15:58:17 EDT 2007
#1829: Control of VREF_OUT and HPF is coupled to Analog Input control
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Reporter: arjs | Owner: cjb
Type: defect | Status: new
Priority: high | Milestone: Trial-2
Component: kernel | Version:
Keywords: analog input, Vref, High pass filter | Verified: 0
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When I open Alsamixer and I toggle the Analog Input, the following two
things happen automatically :
1) Enable Analog Input - The High Pass Filter gets switched off and the
VREF_OUT gets switched off.
2) Disable Analog Input - The High Pass Filter gets switched on and the
VREF_OUT gets switched on.
Note: that these changes are reflected when one exits Alsamixer and opens
it again.
These controls should not be coupled. For example if one wishes to do a
thing similar to what wmb at firmworks.com is doing in Ticket #42
http://dev.laptop.org/ticket/42#comment:15
it would not be possible for one to do it because it requires Analog Input
On (Capacitor bypassed) and the VREF_OUT also on.
All the 3 settings should be independently controllable and the front end
application / activity should take care of the appropriate settings.
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Ticket URL: <http://dev.laptop.org/ticket/1829>
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