[alsa-devel] callbacks order while capturing from Line-IN

Hi,

By now I am a bit confused.

I am seeing a certain pattern in which the callbacks are invoked:

- hw_params() - prepare() - trigger(); // Start DMA - pointer(); --> gets data after interrupt is handled - trigger(); // Stop DMA - prepare(); - trigger(); // Start DMA - pointer(); --> gets data after interrupt is handled

.. ..

and so on.

Is this the right behaviour that's expected from a function ALSA capture driver ? I am trying to understand why there is Start DMA, Stop DMA, Start DMA, Stop DMA in a cyclic fashion for each of the interrupts in my setup.

Thanks, Manu