[haiku-bugs] Re: [Haiku] #8270: [HDA] very quiet on Lenovo laptop (due to hda mixer?)
- From: "korli" <trac@xxxxxxxxxxxx>
- Date: Wed, 29 Aug 2012 16:16:25 -0000
#8270: [HDA] very quiet on Lenovo laptop (due to hda mixer?)
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Reporter: ttcoder | Owner: korli
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Drivers/Audio/HDA | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by korli):
AMP_SET_INPUT is a bit which is documented in
http://www.intel.com/content/dam/www/public/us/en/documents/product-
specifications/high-definition-audio-specification.pdf page 146.
It tells the controller which "amp" is actually to be set, the input amp
or the output amp. The code looks correct.
The corresponding code in FreeBSD is here:
http://fxr.watson.org/fxr/source/dev/sound/pci/hda/hdaa.c?im=excerpts#L1258
The node 23 shouldn't expose a widget in the input panel, as it's not
related to input.
It should instead expose a mux widget for the node 26.
I'll investigate the code at http://cgit.haiku-os.org/haiku/tree/src/add-
ons/kernel/drivers/audio/hda/hda_multi_audio.cpp#n546
As expected the widget tree parser still needs a bit of work :)
--
Ticket URL: <http://dev.haiku-os.org/ticket/8270#comment:14>
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