On 10-07-20, 12:38, Serge Semin wrote: > On Fri, Jul 10, 2020 at 11:45:03AM +0300, Andy Shevchenko wrote: > > On Fri, Jul 10, 2020 at 01:45:44AM +0300, Serge Semin wrote: > > > There are DMA devices (like ours version of Synopsys DW DMAC) which have > > > DMA capabilities non-uniformly redistributed between the device channels. > > > In order to provide a way of exposing the channel-specific parameters to > > > the DMA engine consumers, we introduce a new DMA-device callback. In case > > > if provided it gets called from the dma_get_slave_caps() method and is > > > able to override the generic DMA-device capabilities. > > > > > In light of recent developments consider not to add 'slave' and a such words to the kernel. > > As long as the 'slave' word is used in the name of the dma_slave_caps > structure and in the rest of the DMA-engine subsystem, it will be ambiguous > to use some else terminology. If renaming needs to be done, then it should be > done synchronously for the whole subsystem. Right, I have plans to tackle that during next merge window and have started changes. Thankfully slave_dma can be replaced by peripheral dma easily. But getting that in would be tricky as we need to change users too. -- ~Vinod
