1 /* $NetBSD: at91.h,v 1.1.1.2 2020/01/03 14:33:03 skrll Exp $ */ 2 3 /* SPDX-License-Identifier: GPL-2.0-only */ 4 /* 5 * This header provides macros for at91 dma bindings. 6 * 7 * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com> 8 */ 9 10 #ifndef __DT_BINDINGS_AT91_DMA_H__ 11 #define __DT_BINDINGS_AT91_DMA_H__ 12 13 /* ---------- HDMAC ---------- */ 14 15 /* 16 * Source and/or destination peripheral ID 17 */ 18 #define AT91_DMA_CFG_PER_ID_MASK (0xff) 19 #define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK) 20 21 /* 22 * FIFO configuration: it defines when a request is serviced. 23 */ 24 #define AT91_DMA_CFG_FIFOCFG_OFFSET (8) 25 #define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET) 26 #define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */ 27 #define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */ 28 #define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */ 29 30 31 /* ---------- XDMAC ---------- */ 32 #define AT91_XDMAC_DT_MEM_IF_MASK (0x1) 33 #define AT91_XDMAC_DT_MEM_IF_OFFSET (13) 34 #define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \ 35 << AT91_XDMAC_DT_MEM_IF_OFFSET) 36 #define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \ 37 & AT91_XDMAC_DT_MEM_IF_MASK) 38 39 #define AT91_XDMAC_DT_PER_IF_MASK (0x1) 40 #define AT91_XDMAC_DT_PER_IF_OFFSET (14) 41 #define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \ 42 << AT91_XDMAC_DT_PER_IF_OFFSET) 43 #define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \ 44 & AT91_XDMAC_DT_PER_IF_MASK) 45 46 #define AT91_XDMAC_DT_PERID_MASK (0x7f) 47 #define AT91_XDMAC_DT_PERID_OFFSET (24) 48 #define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \ 49 << AT91_XDMAC_DT_PERID_OFFSET) 50 #define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \ 51 & AT91_XDMAC_DT_PERID_MASK) 52 53 #endif /* __DT_BINDINGS_AT91_DMA_H__ */ 54