diff options
Diffstat (limited to 'drivers/of')
| -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 b87495efa16..097f42aebe9 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 3631a5ea0b4..0052c405463 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 00000000000..258528d6c4f --- /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); |