diff options
| author | Shawn Guo <shawn.guo@freescale.com> | 2011-02-22 21:36:27 +0800 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-03-07 19:29:53 +0100 |
| commit | 3baa4feeadf22ae72dad217f31ea739d881fc149 (patch) | |
| tree | 5e7db774c15c1ec2d92300933aaa9efe1e7ffc90 /arch/arm/mach-mxs/devices | |
| parent | 4ca94366b314c22fda49cbe2c51ceb7bb3e16932 (diff) | |
ARM: mxs: add dma device
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mxs/devices')
| -rw-r--r-- | arch/arm/mach-mxs/devices/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-mxs/devices/platform-dma.c | 49 |
2 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-mxs/devices/Makefile b/arch/arm/mach-mxs/devices/Makefile index 39bd77348a4..0d9bea30b0a 100644 --- a/arch/arm/mach-mxs/devices/Makefile +++ b/arch/arm/mach-mxs/devices/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_MXS_HAVE_AMBA_DUART) += amba-duart.o obj-$(CONFIG_MXS_HAVE_PLATFORM_AUART) += platform-auart.o +obj-y += platform-dma.o obj-$(CONFIG_MXS_HAVE_PLATFORM_FEC) += platform-fec.o obj-$(CONFIG_MXS_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_I2C) += platform-mxs-i2c.o 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..295c4424d5d --- /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); |