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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * This header provides macros for at91 dma bindings.4 *5 * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com>6 */7 8#ifndef __DT_BINDINGS_AT91_DMA_H__9#define __DT_BINDINGS_AT91_DMA_H__10 11/* ---------- HDMAC ---------- */12 13/*14 * Source and/or destination peripheral ID15 */16#define AT91_DMA_CFG_PER_ID_MASK (0xff)17#define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK)18 19/*20 * FIFO configuration: it defines when a request is serviced.21 */22#define AT91_DMA_CFG_FIFOCFG_OFFSET (8)23#define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET)24#define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */25#define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */26#define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */27 28 29/* ---------- XDMAC ---------- */30#define AT91_XDMAC_DT_MEM_IF_MASK (0x1)31#define AT91_XDMAC_DT_MEM_IF_OFFSET (13)32#define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \33 << AT91_XDMAC_DT_MEM_IF_OFFSET)34#define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \35 & AT91_XDMAC_DT_MEM_IF_MASK)36 37#define AT91_XDMAC_DT_PER_IF_MASK (0x1)38#define AT91_XDMAC_DT_PER_IF_OFFSET (14)39#define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \40 << AT91_XDMAC_DT_PER_IF_OFFSET)41#define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \42 & AT91_XDMAC_DT_PER_IF_MASK)43 44#define AT91_XDMAC_DT_PERID_MASK (0x7f)45#define AT91_XDMAC_DT_PERID_OFFSET (24)46#define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \47 << AT91_XDMAC_DT_PERID_OFFSET)48#define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \49 & AT91_XDMAC_DT_PERID_MASK)50 51#endif /* __DT_BINDINGS_AT91_DMA_H__ */52