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-rw-r--r--arch/arm/mach-mxs/devices/platform-dma.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/devices/platform-dma.c b/arch/arm/mach-mxs/devices/platform-dma.c
new file mode 100644
index 00000000000..6a0202b1016
--- /dev/null
+++ b/arch/arm/mach-mxs/devices/platform-dma.c
@@ -0,0 +1,50 @@
1/*
2 * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU General Public License version 2 as published by the
6 * Free Software Foundation.
7 */
8#include <linux/compiler.h>
9#include <linux/dma-mapping.h>
10#include <linux/err.h>
11#include <linux/init.h>
12
13#include <mach/mx23.h>
14#include <mach/mx28.h>
15#include <mach/devices-common.h>
16
17static struct platform_device *__init mxs_add_dma(const char *devid,
18 resource_size_t base)
19{
20 struct resource res[] = {
21 {
22 .start = base,
23 .end = base + SZ_8K - 1,
24 .flags = IORESOURCE_MEM,
25 }
26 };
27
28 return mxs_add_platform_device_dmamask(devid, -1,
29 res, ARRAY_SIZE(res), NULL, 0,
30 DMA_BIT_MASK(32));
31}
32
33static int __init mxs_add_mxs_dma(void)
34{
35 char *apbh = "mxs-dma-apbh";
36 char *apbx = "mxs-dma-apbx";
37
38 if (cpu_is_mx23()) {
39 mxs_add_dma(apbh, MX23_APBH_DMA_BASE_ADDR);
40 mxs_add_dma(apbx, MX23_APBX_DMA_BASE_ADDR);
41 }
42
43 if (cpu_is_mx28()) {
44 mxs_add_dma(apbh, MX28_APBH_DMA_BASE_ADDR);
45 mxs_add_dma(apbx, MX28_APBX_DMA_BASE_ADDR);
46 }
47
48 return 0;
49}
50arch_initcall(mxs_add_mxs_dma);