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The ep93xx DMA controller has 10 independent memory to peripheral (M2P) channels, and 2 dedicated memory to memory (M2M) channels. M2M channels can also be used by SPI and IDE to perform DMA transfers to/from their memory mapped FIFOs. This driver supports both M2P and M2M channels with DMA_SLAVE, DMA_CYCLIC and DMA_MEMCPY (M2M only) capabilities. Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi> Signed-off-by: Ryan Mallon <rmallon@gmail.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> |
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