diff options
Diffstat (limited to 'arch/arm/mach-mxs/devices/platform-dma.c')
-rw-r--r-- | arch/arm/mach-mxs/devices/platform-dma.c | 50 |
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 | |||
17 | static 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 | |||
33 | static 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 | } | ||
50 | arch_initcall(mxs_add_mxs_dma); | ||