[wdmaudiodev] Re: Code example for getting DDI from hdaudbus.sys?
- From: <Edward_Averill@xxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 7 Sep 2010 11:11:43 -0500
Sorry about the delay in getting back - yes, that document is a great help! I'd
guess that I'm going to have to code up a KMDF driver to be able to reach down
into the hdaudbus driver and get the DDI structure out.. ugh.
I wonder if I can get this to work on WinPE, which is our preferred diagnostic
environment? Under full-blown windows I can use a more standard mechanism to
support jack sensing without having to bash on the bus driver directly.
Anyone have any comments (other than "you're insane")?
Back to reading the docs for now...
..ed..
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Cheng-mean Liu (SOCCER)
Sent: Thursday, September 02, 2010 12:24 PM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: Code example for getting DDI from hdaudbus.sys?
There is an example in the section "Push Mode and Pull Mode Support in Windows
Vista" of the "Windows 7 Changes Related to Audio Drivers" documentation.
(http://www.microsoft.com/whdc/device/audio/W7Changes-Audio.mspx)
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of
Edward_Averill@xxxxxxxxxxxx
Sent: Thursday, September 02, 2010 8:54 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Code example for getting DDI from hdaudbus.sys?
Hello list! I'm a newbie, so I have a newbies question:
I need to send a VERB down to the HD audio hardware to perform jack sense for a
diagnostic. The only driver I'm guaranteed to have is hdaudbus.sys, which
should be sufficient. I see that I need to query for an
HDAUDIO_BUS_INTERFACE_V2 interface, but I don't see any examples in the DDK on
how to go about doing this.
Can someone kindly point me in the direction of some code snippets and/or
documentation on how to go about doing this? The mechanism I'm currently using
(Setup API to get device class, then trying to enumerate interfaces) fails
horribly.
All info appreciated.
..ed..
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