29 Apr
2015
29 Apr
'15
10:24 a.m.
Hi,
I am working on a ALSA card driver that handles a DSP instance. The problem I have is that the triggering mechanism in ALSA to start a PCM has the interrupts disabled, and my dsp framework is actually acknowledging the start trigger with an event after 50 microseconds time that I can't handle because the IRQs are disabled.
Is there any way when the trigger mechanism goes down to the card to be able to handle any acknowledgements what will happen within a sort period of time.
I have seen bespoke triggering method but not sure if everyone is using it.
Any ideas would be helpful.
Best regards, Andreas