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/* * This header provides macros for at91 dma bindings. * * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com> * * GPLv2 only */ #ifndef __DT_BINDINGS_AT91_DMA_H__ #define __DT_BINDINGS_AT91_DMA_H__ /* ---------- HDMAC ---------- */ /* * Source and/or destination peripheral ID */ #define AT91_DMA_CFG_PER_ID_MASK (0xff) #define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK) /* * FIFO configuration: it defines when a request is serviced. */ #define AT91_DMA_CFG_FIFOCFG_OFFSET (8) #define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET) #define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */ #define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */ #define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */ /* ---------- XDMAC ---------- */ #define AT91_XDMAC_DT_MEM_IF_MASK (0x1) #define AT91_XDMAC_DT_MEM_IF_OFFSET (13) #define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \ << AT91_XDMAC_DT_MEM_IF_OFFSET) #define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \ & AT91_XDMAC_DT_MEM_IF_MASK) #define AT91_XDMAC_DT_PER_IF_MASK (0x1) #define AT91_XDMAC_DT_PER_IF_OFFSET (14) #define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \ << AT91_XDMAC_DT_PER_IF_OFFSET) #define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \ & AT91_XDMAC_DT_PER_IF_MASK) #define AT91_XDMAC_DT_PERID_MASK (0x7f) #define AT91_XDMAC_DT_PERID_OFFSET (24) #define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \ << AT91_XDMAC_DT_PERID_OFFSET) #define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \ & AT91_XDMAC_DT_PERID_MASK) #endif /* __DT_BINDINGS_AT91_DMA_H__ */