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