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/err.h>
10 #include <linux/init.h>
11
12 #include <mach/mx23.h>
13 #include <mach/mx28.h>
14 #include <mach/devices-common.h>
15
mxs_add_dma(const char * devid,resource_size_t base)16 static struct platform_device *__init mxs_add_dma(const char *devid,
17 resource_size_t base)
18 {
19 struct resource res[] = {
20 {
21 .start = base,
22 .end = base + SZ_8K - 1,
23 .flags = IORESOURCE_MEM,
24 }
25 };
26
27 return mxs_add_platform_device_dmamask(devid, -1,
28 res, ARRAY_SIZE(res), NULL, 0,
29 DMA_BIT_MASK(32));
30 }
31
mxs_add_mxs_dma(void)32 static int __init mxs_add_mxs_dma(void)
33 {
34 char *apbh = "mxs-dma-apbh";
35 char *apbx = "mxs-dma-apbx";
36
37 if (cpu_is_mx23()) {
38 mxs_add_dma(apbh, MX23_APBH_DMA_BASE_ADDR);
39 mxs_add_dma(apbx, MX23_APBX_DMA_BASE_ADDR);
40 }
41
42 if (cpu_is_mx28()) {
43 mxs_add_dma(apbh, MX28_APBH_DMA_BASE_ADDR);
44 mxs_add_dma(apbx, MX28_APBX_DMA_BASE_ADDR);
45 }
46
47 return 0;
48 }
49 arch_initcall(mxs_add_mxs_dma);
50