Help - Search - Members - Calendar
Full Version: How The Mutegpio?
Project OS X Forums > OS X 10.6 (Snow Leopard) > Hardware Information > Sound
mayjune
Hello,

I want to understand the functioning of muteGpio that occur in resource platform.

Thank you
neXus
QUOTE (mayjune @ Feb 23 2010, 11:32 AM) *
Hello,

I want to understand the functioning of muteGpio that occur in resource platform.

Thank you


Don't know what is it exactly for but I know to find them :

VREF (50/80/100) -> Hex (32,50,64) + 0100 + NID (hex) -> Converted du dec

Get the VREF from the codec dump, for some device, with VREF _HIZ, MUTEGPIO is 0

example :

Node 0x18 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
Pin-ctls: 0x24: IN VREF_80
-> 0x50010018 -> 1342242840
Node 0x19 [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
Pin-ctls: 0x24: IN VREF_80
-> 0x50010019 -> 1342242841
Node 0x1a [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
Pin-ctls: 0x20: IN VREF_HIZ
-> O
Node 0x1b [Pin Complex] wcaps 0x40018f: Stereo Amp-In Amp-Out
Pin-ctls: 0x40: OUT VREF_HIZ
-> O
Trauma
Interesting smile.gif
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.
Invision Power Board © 2001-2010 Invision Power Services, Inc.