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ca79522c LD |
1 | /* |
2 | * This header provides macros for at91 dma bindings. | |
3 | * | |
4 | * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com> | |
5 | * | |
6 | * GPLv2 only | |
7 | */ | |
8 | ||
9 | #ifndef __DT_BINDINGS_AT91_DMA_H__ | |
10 | #define __DT_BINDINGS_AT91_DMA_H__ | |
11 | ||
e1f7c9ee LD |
12 | /* ---------- HDMAC ---------- */ |
13 | ||
ca79522c LD |
14 | /* |
15 | * Source and/or destination peripheral ID | |
16 | */ | |
17 | #define AT91_DMA_CFG_PER_ID_MASK (0xff) | |
18 | #define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK) | |
19 | ||
20 | /* | |
21 | * FIFO configuration: it defines when a request is serviced. | |
22 | */ | |
23 | #define AT91_DMA_CFG_FIFOCFG_OFFSET (8) | |
24 | #define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET) | |
25 | #define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */ | |
26 | #define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */ | |
27 | #define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */ | |
28 | ||
e1f7c9ee LD |
29 | |
30 | /* ---------- XDMAC ---------- */ | |
31 | #define AT91_XDMAC_DT_MEM_IF_MASK (0x1) | |
32 | #define AT91_XDMAC_DT_MEM_IF_OFFSET (13) | |
33 | #define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \ | |
34 | << AT91_XDMAC_DT_MEM_IF_OFFSET) | |
35 | #define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \ | |
36 | & AT91_XDMAC_DT_MEM_IF_MASK) | |
37 | ||
38 | #define AT91_XDMAC_DT_PER_IF_MASK (0x1) | |
39 | #define AT91_XDMAC_DT_PER_IF_OFFSET (14) | |
40 | #define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \ | |
41 | << AT91_XDMAC_DT_PER_IF_OFFSET) | |
42 | #define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \ | |
43 | & AT91_XDMAC_DT_PER_IF_MASK) | |
44 | ||
45 | #define AT91_XDMAC_DT_PERID_MASK (0x7f) | |
46 | #define AT91_XDMAC_DT_PERID_OFFSET (24) | |
47 | #define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \ | |
48 | << AT91_XDMAC_DT_PERID_OFFSET) | |
49 | #define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \ | |
50 | & AT91_XDMAC_DT_PERID_MASK) | |
51 | ||
ca79522c | 52 | #endif /* __DT_BINDINGS_AT91_DMA_H__ */ |