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808347f6a3
This patch for at_hdmac adds the slave transfers capability to the Atmel DMA controller available on some AT91 SOCs. This allow peripheral to memory and memory to peripheral transfers with hardware handshaking. Slave structure for controller specific information is passed through channel private data. This at_dma_slave structure is defined in at_hdmac.h header file and relative hardware definition are moved to this file from at_hdmac_regs.h. Doing this we allow the channel configuration from platform definition code. This work is intensively based on dw_dmac and several slave implementations. Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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