2 # Copyright (c) 2016 Jared D. McNeill <jmcneill@invisible.ca>
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
8 # 1. Redistributions of source code must retain the above copyright
9 # notice, this list of conditions and the following disclaimer.
10 # 2. Redistributions in binary form must reproduce the above copyright
11 # notice, this list of conditions and the following disclaimer in the
12 # documentation and/or other materials provided with the distribution.
14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <machine/bus.h>
36 struct sunxi_dma_config {
37 unsigned int dst_width;
38 unsigned int dst_burst_len;
39 unsigned int dst_drqtype;
41 unsigned int dst_blksize; /* DDMA-only */
42 unsigned int dst_wait_cyc; /* DDMA-only */
43 unsigned int src_width;
44 unsigned int src_burst_len;
45 unsigned int src_drqtype;
47 unsigned int src_blksize; /* DDMA-only */
48 unsigned int src_wait_cyc; /* DDMA-only */
51 typedef void (*sunxi_dma_callback)(void *);
55 # Allocate DMA channel
60 sunxi_dma_callback callback;
73 # Set DMA channel configuration
75 METHOD int set_config {
78 const struct sunxi_dma_config *cfg;
82 # Start DMA channel transfer
93 # Halt DMA channel transfer