Commit | Line | Data |
---|---|---|
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 | ||
12 | /* | |
13 | * Source and/or destination peripheral ID | |
14 | */ | |
15 | #define AT91_DMA_CFG_PER_ID_MASK (0xff) | |
16 | #define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK) | |
17 | ||
18 | /* | |
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 */ | |
26 | ||
27 | #endif /* __DT_BINDINGS_AT91_DMA_H__ */ |