Path: blob/main/sys/contrib/device-tree/include/dt-bindings/dma/at91.h
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/* SPDX-License-Identifier: GPL-2.0-only */1/*2* This header provides macros for at91 dma bindings.3*4* Copyright (C) 2013 Ludovic Desroches <[email protected]>5*/67#ifndef __DT_BINDINGS_AT91_DMA_H__8#define __DT_BINDINGS_AT91_DMA_H__910/* ---------- HDMAC ---------- */1112/*13* Source and/or destination peripheral ID14*/15#define AT91_DMA_CFG_PER_ID_MASK (0xff)16#define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK)1718/*19* FIFO configuration: it defines when a request is serviced.20*/21#define AT91_DMA_CFG_FIFOCFG_OFFSET (8)22#define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET)23#define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */24#define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */25#define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */262728/* ---------- XDMAC ---------- */29#define AT91_XDMAC_DT_MEM_IF_MASK (0x1)30#define AT91_XDMAC_DT_MEM_IF_OFFSET (13)31#define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \32<< AT91_XDMAC_DT_MEM_IF_OFFSET)33#define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \34& AT91_XDMAC_DT_MEM_IF_MASK)3536#define AT91_XDMAC_DT_PER_IF_MASK (0x1)37#define AT91_XDMAC_DT_PER_IF_OFFSET (14)38#define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \39<< AT91_XDMAC_DT_PER_IF_OFFSET)40#define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \41& AT91_XDMAC_DT_PER_IF_MASK)4243#define AT91_XDMAC_DT_PERID_MASK (0x7f)44#define AT91_XDMAC_DT_PERID_OFFSET (24)45#define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \46<< AT91_XDMAC_DT_PERID_OFFSET)47#define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \48& AT91_XDMAC_DT_PERID_MASK)4950#endif /* __DT_BINDINGS_AT91_DMA_H__ */515253