hi,
I have a very trivial question about the dma transfers with respect
to ALSA framework.
Let me first explain a scenario
We have a
Circularly linked Buffer pool
buf1 buf2 buf3 buf4 .... bufn
In very simple terms playing an audio stream is reading from these buffers
and continuously dma'ing it to the audio device (let's assume we have a read
and write register with the audio device). And in this circulary linked
audio buffer the user fills the data and the driver empties it to the
device.
Now I am not able to fit this scenario in the ALSA framework. I am
referrring to alsa-kernel/arm/sa11xx-uda1341.c file as a reference for my
driver. And here I don't understand where do we specify the the exact dma
parameters (like the start address of buffer and the destination address).
Can someone enlighten me on this or else suggest me some other reference
driver.
regards
-kshitij
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