diff options
| author | Christian Krafft <krafft@de.ibm.com> | 2007-04-23 21:35:45 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@klappe.arndb.de> | 2007-04-23 21:44:40 +0200 |
| commit | 6bf05fd776e38a0a9c17e17c2345b59b1b9aa2cb (patch) | |
| tree | 2f7c2ecec6918614f6f407bec94299d79baf5b47 /include/asm-powerpc | |
| parent | 4a065f9418274f2d73066f1638b3612341e4f030 (diff) | |
[POWERPC] add of_iomap function
The of_iomap function maps memory for a given
device_node and returns a pointer to that memory.
This is used at some places, so it makes sense to
a seperate function.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/prom.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h index e73a2b482a15..f31af713e6a4 100644 --- a/include/asm-powerpc/prom.h +++ b/include/asm-powerpc/prom.h @@ -20,6 +20,7 @@ #include <linux/platform_device.h> #include <asm/irq.h> #include <asm/atomic.h> +#include <asm/io.h> /* Definitions used by the flattened device tree */ #define OF_DT_HEADER 0xd00dfeed /* marker */ @@ -355,6 +356,16 @@ static inline int of_irq_to_resource(struct device_node *dev, int index, struct return irq; } +static inline 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); +} + #endif /* __KERNEL__ */ #endif /* _POWERPC_PROM_H */ |