Hello. On 03-01-2011 20:01, Gupta, Ajay Kumar wrote:
Add support for Texas Instuments Communication Port Programming Interface 4.1 (CPPI 4.1) used on OMAP-L1x/DA8xx and AM35x.
At this moment, only the DMA controller and queue manager are supported. Support for the buffer manager is lacking but these chips don't have it anyway.
Signed-off-by: Sergei Shtylyov<sshtylyov@xxxxxxxxxxxxx> Signed-off-by: Sekhar Nori<nsekhar@xxxxxx>
Russell, you have recently discarded this patch from your patch system. Can we know the reason?
It was recently discussed with TI, and various people raised concerns about it. I don't remember the exact details, and I wish they'd raise them with the patch author directly. It may have been that it's inventing its own API rather than using something like the DMA engine API.
Adding linux-omap to try to get a response there.
Sergei, This issue was discussed recently at TI and proposal was to place it to drivers/dma folder.
Note that I have neither time nor inclination to do this work (not do I think it's even feasible), so it will have to fall on TI's shoulders...
Moreover, even Felipe also seems to move other musb DMAs (Inventra, CPPI3.0, TUSB) to drivers/dma.
Frankly speaking, I doubt that drivers/dma/ will have place for the purely MUSB specific DMA engines such as the named ones (there's no TUSB DMA BTW -- it uses OMAP DMA).
Regards, Ajay
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