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| author | Grant Likely <grant.likely@secretlab.ca> | 2010-06-08 07:48:09 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-07-05 16:14:26 -0600 |
| commit | 6b884a8d50a6eea2fb3dad7befe748f67193073b (patch) | |
| tree | 85756fbd09ebaebdeb9a7ab56806bcbc5e793532 /drivers | |
| parent | a7c194b007ec40a130207e9ace9cecf598fc6ac5 (diff) | |
| download | linux-6b884a8d50a6eea2fb3dad7befe748f67193073b.tar.gz linux-6b884a8d50a6eea2fb3dad7befe748f67193073b.tar.bz2 linux-6b884a8d50a6eea2fb3dad7befe748f67193073b.zip | |
of/address: merge of_iomap()
Merge common code between Microblaze and PowerPC. This patch creates
new of_address.h and address.c files to containing address translation
and mapping routines. First routine to be moved it of_iomap()
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Michal Simek <monstr@monstr.eu>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/of/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/of/Makefile | 1 | ||||
| -rw-r--r-- | drivers/of/address.c | 22 |
3 files changed, 27 insertions, 0 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index b87495efa16e..097f42aebe90 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -6,6 +6,10 @@ config OF_DYNAMIC def_bool y depends on OF && PPC_OF +config OF_ADDRESS + def_bool y + depends on OF && !SPARC + config OF_IRQ def_bool y depends on OF && !SPARC diff --git a/drivers/of/Makefile b/drivers/of/Makefile index 3631a5ea0b47..0052c405463a 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -1,5 +1,6 @@ obj-y = base.o obj-$(CONFIG_OF_FLATTREE) += fdt.o +obj-$(CONFIG_OF_ADDRESS) += address.o obj-$(CONFIG_OF_IRQ) += irq.o obj-$(CONFIG_OF_DEVICE) += device.o platform.o obj-$(CONFIG_OF_GPIO) += gpio.o diff --git a/drivers/of/address.c b/drivers/of/address.c new file mode 100644 index 000000000000..258528d6c4fe --- /dev/null +++ b/drivers/of/address.c @@ -0,0 +1,22 @@ + +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/of_address.h> + +/** + * of_iomap - Maps the memory mapped IO for a given device_node + * @device: the device whose io range will be mapped + * @index: index of the io range + * + * Returns a pointer to the mapped memory + */ +void __iomem *of_iomap(struct device_node *np, int index) +{ + struct resource res; + + if (of_address_to_resource(np, index, &res)) + return NULL; + + return ioremap(res.start, 1 + res.end - res.start); +} +EXPORT_SYMBOL(of_iomap); |