blob: ab6cbba45401754ec91542a4214a0a3c8ce6f6bd (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/*
* This header provides macros for at91 dma bindings.
*
* Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
*
* GPLv2 only
*/
#ifndef __DT_BINDINGS_AT91_DMA_H__
#define __DT_BINDINGS_AT91_DMA_H__
/* ---------- HDMAC ---------- */
/*
* Source and/or destination peripheral ID
*/
#define AT91_DMA_CFG_PER_ID_MASK (0xff)
#define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK)
/*
* FIFO configuration: it defines when a request is serviced.
*/
#define AT91_DMA_CFG_FIFOCFG_OFFSET (8)
#define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET)
#define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */
#define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */
#define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */
/* ---------- XDMAC ---------- */
#define AT91_XDMAC_DT_MEM_IF_MASK (0x1)
#define AT91_XDMAC_DT_MEM_IF_OFFSET (13)
#define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \
<< AT91_XDMAC_DT_MEM_IF_OFFSET)
#define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \
& AT91_XDMAC_DT_MEM_IF_MASK)
#define AT91_XDMAC_DT_PER_IF_MASK (0x1)
#define AT91_XDMAC_DT_PER_IF_OFFSET (14)
#define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \
<< AT91_XDMAC_DT_PER_IF_OFFSET)
#define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \
& AT91_XDMAC_DT_PER_IF_MASK)
#define AT91_XDMAC_DT_PERID_MASK (0x7f)
#define AT91_XDMAC_DT_PERID_OFFSET (24)
#define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \
<< AT91_XDMAC_DT_PERID_OFFSET)
#define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \
& AT91_XDMAC_DT_PERID_MASK)
#endif /* __DT_BINDINGS_AT91_DMA_H__ */
|