Messages in this thread | | | Subject | Re: [PATCH v7 2/4] dmaengine: Forward slave device pointer to of_xlate callback | From | Marek Szyprowski <> | Date | Thu, 09 Feb 2017 14:30:13 +0100 |
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Hi Ulf,
On 2017-02-09 10:55, Ulf Hansson wrote: >>> Yes agreed on that, plus the runtime handling needs to be built in, right >>> now the APIs dont work well with it, we disucssed these during the KS and >>> this goes without saying, patches are welcome :) >> Okay, so what is the conclusion? Do you want me to do the whole rework of >> dma >> engine core to get this runtime pm patchset for pl330 merged??? Is there any >> roadmap for this rework prepared, so I can at least take a look at the >> amount >> of work needed to be done? >> >> I'm rather new to dma engine framework and I only wanted to fix pl330 driver >> not to block turning off the power domain on Exynos5422/5433 SoCs. > As you probably know, this is a common problem for many dma devices, > slave devices and platforms.
Right, this is a common issue and someone has to finally find a solution for it.
> If possible, it would be great if we could avoid a solution that > doesn't force changes to lots of "dma consumer" drivers.
My current solution doesn't require changing ANY "dma consumer" driver. However, I have one more idea how to avoid touching dma engine ("provider") drivers as well. This will also address some issues pointed by Lars.
Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
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