On Mon, Jun 17, 2013 at 7:13 PM, Vinod Koul <vinod.koul@xxxxxxxxx> wrote: > On Wed, Jun 12, 2013 at 05:27:53PM +0530, Jassi Brar wrote: >> IIRC, TI's Sundaram Raju proposed a TI specific api to DMAEngine for >> this very purpose, which was generalized into >> device_prep_interleaved_dma(). Which I think should already be enough >> to serve the purpose. Is it not? > The interleaved for having to get/set data from interleaved or an 2d array. > Think of a raw image from camera where you need to get some region only and skip > rest. In those case interleaved API helps > IIRC I designed the interleaved api ;) and I am sure it was not designed solely for async, rather the first users of the api are slave. > Here this is just normal slave DMA with changing FIFO address and which just > loops over the FIFO value > It is possible that I didn't understand the OMAP usecase and the interleave api won't work, but if it does work please let us not introduce yet another api for a 'normal' usecase. In fact my bigger plan was to call the api 'generic' and have it eventually consume most, if not all, dma_transaction_type's but then we couldn't see the same and I got busy with non-dma stuff ... anyways. cheers. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
