at91.h

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    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__ */

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/include/dt-bindings/dma/at91.h

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/include/dt-bindings/dma/at91.h