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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 (at) 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