On 07/24/2014 03:06 PM, Krzysztof Sywula wrote:
Hi there, I’m designing a PCIe driver for DMA enabled ADC. Is IIO handling
such a combo? I'm based on kernel 3.8.7.
Website:
http://wiki.analog.com/software/linux/docs/iio/iio
says "However typical DMA operated devices such as ones connected to a
high speed synchronous serial (McBSP, SPORT) or high speed synchronous
parallel (EPI, PPI) or FPGA peripherals are also subject to this
subsystem."
which is not clear enough for me to answer that question.
Hi,
The current upstream version of IIO does not have built-in support for DMA,
but you can always create your custom buffer implementation that handles the
DMA.
There is a out of tree generic DMA[0] and DMAengine[1] support for IIO. This
is both scheduled for mainline submission, but obviously will not be
available in a 3.8.7 kernel.
- Lars
[0]
https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/iio/industrialio-dmabuf.c
[1]
https://github.com/analogdevicesinc/linux/blob/xcomm_zynq/drivers/iio/industrialio-dmaengine.c
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