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Diffstat (limited to 'firmware/target/arm/tms320dm320/dma-target.h')
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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id: $
9 *
10 * Copyright (C) 2011 by Tomasz Moń
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#ifndef DMA_TARGET_H
23#define DMA_TARGET_H
24
25/* These defines match DMA Select bits */
26#define DMA_PERIPHERAL_MTC 0
27#define DMA_PERIPHERAL_SIF 1
28#define DMA_PERIPHERAL_MS 2
29#define DMA_PERIPHERAL_MMCSD 3
30#define DMA_PERIPHERAL_DSP 4
31
32/* These defines match DMA Burst bits */
33/* 1 burst DMA - address must be 4 byte aligned */
34#define DMA_MODE_1_BURST 0
35/* 4 burst DMA - address must be 16 byte aligned */
36#define DMA_MODE_4_BURST 1
37/* 8 burst DMA - address must be 32 byte aligned */
38#define DMA_MODE_8_BURST 2
39
40void dma_init(void);
41int dma_request_channel(int peripheral, int mode);
42void dma_release_channel(int channel);
43
44#endif