Related question:
Once I have copied my data from PING into dma_area, and called
snd_pcm_period_elapsed, can I assume arecord has consumed that data by the
time i finish writing PONG, calling snd_pcm_period_elapsed, and hit the IRQ
to recopy PING?
in other words, what/where is the guarantee that
Thanks Lars.
My problem with the DMA is that it doesn't support cyclic mode, but does
support SG mode. I have to create a new descriptor every time, and
requeue/resubmit it. I don't want to drop any frames, so PONG is being
received while PING is being copied and resubmitted to the Linux queue.
O
On 07/11/2016 09:10 PM, Rob Nertney wrote:
> Hi all,
>
> Could I please get a sanity check on my hw_params?
>
> I have a DMA which is providing between 1-16 channels of 4 bytes/ch worth
> of data as a frame. I get an interrupt to my driver every frame's worth of
> data (64 Bytes). The data is S32
