[alsa-devel] HDA driver without interrupt

Pierre-Louis Bossart pierre-louis.bossart at linux.intel.com
Wed May 2 21:28:15 CEST 2012

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.

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