On 04/20/2017 06:10 PM, Alex Williams wrote: > Hi all, > > We're writing a device driver and having some difficulty matching a > subsystem to the driver/device properties. Can anyone help with > direction? > > These are some basic properties: > 1) Device is used to carry generic data to/from userspace. It's a pair > of dumb streams with one sink and one source for each direction (no > addressable endpoints for the other side). > 2) Data goes to/from a DMA engine in an FPGA at high throughput. > 3) The driver enables userspace to queue multiple DMA-able buffers for > asynchronous, pipelined data transfer. We currently use the > videobuf2 API to provide the feature. We're not carrying video data > in general, though. > > It's a piece of a software-defined radio system, and while it can carry > data from DACs/ADCs, the device is only a generic transport. It doesn't > know what data it's carrying, so neither would the driver. > > Some guidance would be greatly appreciated. Thanks!
This might be close enough to hidma that Sinan would have suggestions?
