ALSA HW buffer managment

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Hi,
As I understood, ALSA buffer management uses the 'periods' notion to
control the latency between SW stack and HW DMA.
My HW is not capable of interrupting the SW on a period basis. The only
interrupt HW generates is on half or quarter of the DMA buffer (for
example, in capture, after each half of the buffer is filled with
samples the HW will signal interrupt).
Please advise.
Thanks.



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