On Monday 28 January 2013, Vinod Koul wrote: > On Fri, Jan 18, 2013 at 05:03:40PM +0530, Padmavathi Venna wrote: > > This patch set adds support for generic dma device tree bindings for > > Samsung platforms and is dependent on the following patches from > > Vinod Koul next branch > > 1)of: Add generic device tree DMA helpers > > 2)dmaengine: add helper function to request a slave DMA channel > Changes look fairly decent. I need somone with better knowldge of DT to akc this > before this is applied. Arnd...? Thanks for the pointer, it seems everthing is coming together today ;-) The binding looks good, aside from the wording on some of the properties in there that could be a little clearer. The method of calling dma_request_channel() from the xlate() function is a little bit clumsy IMHO, but it does work and is the easiest way to retrofit generic DT support to this driver, given that it already provides a global filter function. It's also apparently what Jon had in mind, and what Matt is doing on AM33XX. I'll probably propose something similar on dw_dma, since I was just (this hour, actually) looking at the same problem there. I believe you had something smarter in mind when we discussed it in San Diego, but I don't remember what the idea was. I would need something like struct dma_chan *dma_channel_get(struct dma_device *); and I assume that there is a reason for why I can't call this from the xlate() function but instead have to go through dma_request_channel(), but I don't completely understand that part of the puzzle. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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