From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Subject: Re: HDA driver without interrupt
Date: Wed, 02 May 2012 14:28:15 -0500
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On 5/2/2012 7:54 AM, liufc wrote:
> Hi guys,I'm trying to implement an alsa driver based on the Intel HDA
> driver.However due to some hardware defects,I'm not able to use
> interrupt.So I wonder whether there is a way to do the job without the
> help of interrupt.Can anyone give me a suggestion?
What interrupt are you talking about? ALSA has the ability to discard 
periodic interrupts but the user-space code needs to explicitly request 
this mode (eg PulseAudio/AudioHAL). Regular/legacy apps do need an 
interrupt coming from the hardware.
-Pierre