diff options
Diffstat (limited to 'arch/arm/mach-mxs/devices/platform-dma.c')
| -rw-r--r-- | arch/arm/mach-mxs/devices/platform-dma.c | 49 |
1 files changed, 49 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 000000000000..295c4424d5d9 --- /dev/null +++ b/arch/arm/mach-mxs/devices/platform-dma.c @@ -0,0 +1,49 @@ +/* + * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ +#include <linux/compiler.h> +#include <linux/err.h> +#include <linux/init.h> + +#include <mach/mx23.h> +#include <mach/mx28.h> +#include <mach/devices-common.h> + +static struct platform_device *__init mxs_add_dma(const char *devid, + resource_size_t base) +{ + struct resource res[] = { + { + .start = base, + .end = base + SZ_8K - 1, + .flags = IORESOURCE_MEM, + } + }; + + return mxs_add_platform_device_dmamask(devid, -1, + res, ARRAY_SIZE(res), NULL, 0, + DMA_BIT_MASK(32)); +} + +static int __init mxs_add_mxs_dma(void) +{ + char *apbh = "mxs-dma-apbh"; + char *apbx = "mxs-dma-apbx"; + + if (cpu_is_mx23()) { + mxs_add_dma(apbh, MX23_APBH_DMA_BASE_ADDR); + mxs_add_dma(apbx, MX23_APBX_DMA_BASE_ADDR); + } + + if (cpu_is_mx28()) { + mxs_add_dma(apbh, MX28_APBH_DMA_BASE_ADDR); + mxs_add_dma(apbx, MX28_APBX_DMA_BASE_ADDR); + } + + return 0; +} +arch_initcall(mxs_add_mxs_dma); |