at91.h revision 1.1.1.1 
1/*	$NetBSD: at91.h,v 1.1.1.1 2017/06/15 20:14:23 jmcneill Exp $	*/
2
3/*
4 * This header provides macros for at91 dma bindings.
5 *
6 * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com>
7 *
8 * GPLv2 only
9 */
10
11#ifndef __DT_BINDINGS_AT91_DMA_H__
12#define __DT_BINDINGS_AT91_DMA_H__
13
14/* ---------- HDMAC ---------- */
15
16/*
17 * Source and/or destination peripheral ID
18 */
19#define AT91_DMA_CFG_PER_ID_MASK	(0xff)
20#define AT91_DMA_CFG_PER_ID(id)		(id & AT91_DMA_CFG_PER_ID_MASK)
21
22/*
23 * FIFO configuration: it defines when a request is serviced.
24 */
25#define AT91_DMA_CFG_FIFOCFG_OFFSET	(8)
26#define AT91_DMA_CFG_FIFOCFG_MASK	(0xf << AT91_DMA_CFG_FIFOCFG_OFFSET)
27#define AT91_DMA_CFG_FIFOCFG_HALF	(0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* half FIFO (default behavior) */
28#define AT91_DMA_CFG_FIFOCFG_ALAP	(0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* largest defined AHB burst */
29#define AT91_DMA_CFG_FIFOCFG_ASAP	(0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET)	/* single AHB access */
30
31
32/* ---------- XDMAC ---------- */
33#define AT91_XDMAC_DT_MEM_IF_MASK	(0x1)
34#define AT91_XDMAC_DT_MEM_IF_OFFSET	(13)
35#define AT91_XDMAC_DT_MEM_IF(mem_if)	(((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \
36					<< AT91_XDMAC_DT_MEM_IF_OFFSET)
37#define AT91_XDMAC_DT_GET_MEM_IF(cfg)	(((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \
38					& AT91_XDMAC_DT_MEM_IF_MASK)
39
40#define AT91_XDMAC_DT_PER_IF_MASK	(0x1)
41#define AT91_XDMAC_DT_PER_IF_OFFSET	(14)
42#define AT91_XDMAC_DT_PER_IF(per_if)	(((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \
43					<< AT91_XDMAC_DT_PER_IF_OFFSET)
44#define AT91_XDMAC_DT_GET_PER_IF(cfg)	(((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \
45					& AT91_XDMAC_DT_PER_IF_MASK)
46
47#define AT91_XDMAC_DT_PERID_MASK	(0x7f)
48#define AT91_XDMAC_DT_PERID_OFFSET	(24)
49#define AT91_XDMAC_DT_PERID(perid)	(((perid) & AT91_XDMAC_DT_PERID_MASK) \
50					<< AT91_XDMAC_DT_PERID_OFFSET)
51#define AT91_XDMAC_DT_GET_PERID(cfg)	(((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \
52					& AT91_XDMAC_DT_PERID_MASK)
53
54#endif /* __DT_BINDINGS_AT91_DMA_H__ */
55