[Sound-open-firmware] host_dma_cb() error: Wrong callback type = 3

Daniel Baluta daniel.baluta at gmail.com
Tue Aug 6 13:02:08 CEST 2019


On Mon, Aug 5, 2019 at 10:04 AM Paul Olaru <paul.olaru at nxp.com> wrote:
>
> Hello again, do you have any resource on what the dma_cb_status values mean? Right now I'm ignoring them and that doesn't seem to work. Also tried treating DMA_CB_STATUS_SPLIT in a sense but that leads to IPC timeouts and a sort of hanging (when aplay stops due to the timeout the firmware seems to acknowledge and recover).

Hi all,

We pretty much understood the meaning of dma_cb_status.

Now we want to understand when the one needs to call
DMA_CB_TYPE_IRQ vs DMA_CB_TYPE_COPY?

Can you help? A document describing the DMA workflow would
be nice to have :).

thanks,
Daniel.


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