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