1/*	$NetBSD: at91.h,v 1.1.1.2 2020/01/03 14:33:03 skrll Exp $	*/
2
3/* SPDX-License-Identifier: GPL-2.0-only */
4/*
5 * This header provides macros for at91 dma bindings.
6 *
7 * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
8 */
9
10#ifndef __DT_BINDINGS_AT91_DMA_H__
11#define __DT_BINDINGS_AT91_DMA_H__
12
13/* ---------- HDMAC ---------- */
14
15/*
16 * Source and/or destination peripheral ID
17 */
18#define AT91_DMA_CFG_PER_ID_MASK	(0xff)
19#define AT91_DMA_CFG_PER_ID(id)		(id & AT91_DMA_CFG_PER_ID_MASK)
20
21/*
22 * FIFO configuration: it defines when a request is serviced.
23 */
24#define AT91_DMA_CFG_FIFOCFG_OFFSET	(8)
25#define AT91_DMA_CFG_FIFOCFG_MASK	(0xf << AT91_DMA_CFG_FIFOCFG_OFFSET)
26#define AT91_DMA_CFG_FIFOCFG_HALF	(0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* half FIFO (default behavior) */
27#define AT91_DMA_CFG_FIFOCFG_ALAP	(0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* largest defined AHB burst */
28#define AT91_DMA_CFG_FIFOCFG_ASAP	(0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* single AHB access */
29
30
31/* ---------- XDMAC ---------- */
32#define AT91_XDMAC_DT_MEM_IF_MASK	(0x1)
33#define AT91_XDMAC_DT_MEM_IF_OFFSET	(13)
34#define AT91_XDMAC_DT_MEM_IF(mem_if)	(((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \
35					<< AT91_XDMAC_DT_MEM_IF_OFFSET)
36#define AT91_XDMAC_DT_GET_MEM_IF(cfg)	(((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \
37					& AT91_XDMAC_DT_MEM_IF_MASK)
38
39#define AT91_XDMAC_DT_PER_IF_MASK	(0x1)
40#define AT91_XDMAC_DT_PER_IF_OFFSET	(14)
41#define AT91_XDMAC_DT_PER_IF(per_if)	(((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \
42					<< AT91_XDMAC_DT_PER_IF_OFFSET)
43#define AT91_XDMAC_DT_GET_PER_IF(cfg)	(((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \
44					& AT91_XDMAC_DT_PER_IF_MASK)
45
46#define AT91_XDMAC_DT_PERID_MASK	(0x7f)
47#define AT91_XDMAC_DT_PERID_OFFSET	(24)
48#define AT91_XDMAC_DT_PERID(perid)	(((perid) & AT91_XDMAC_DT_PERID_MASK) \
49					<< AT91_XDMAC_DT_PERID_OFFSET)
50#define AT91_XDMAC_DT_GET_PERID(cfg)	(((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \
51					& AT91_XDMAC_DT_PERID_MASK)
52
53#endif /* __DT_BINDINGS_AT91_DMA_H__ */
54