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authorChristian Krafft <krafft@de.ibm.com>2007-04-23 15:35:45 -0400
committerArnd Bergmann <arnd@klappe.arndb.de>2007-04-23 15:44:40 -0400
commit6bf05fd776e38a0a9c17e17c2345b59b1b9aa2cb (patch)
tree2f7c2ecec6918614f6f407bec94299d79baf5b47 /include
parent4a065f9418274f2d73066f1638b3612341e4f030 (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')
-rw-r--r--include/asm-powerpc/prom.h11
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 @@
20#include <linux/platform_device.h> 20#include <linux/platform_device.h>
21#include <asm/irq.h> 21#include <asm/irq.h>
22#include <asm/atomic.h> 22#include <asm/atomic.h>
23#include <asm/io.h>
23 24
24/* Definitions used by the flattened device tree */ 25/* Definitions used by the flattened device tree */
25#define OF_DT_HEADER 0xd00dfeed /* marker */ 26#define OF_DT_HEADER 0xd00dfeed /* marker */
@@ -355,6 +356,16 @@ static inline int of_irq_to_resource(struct device_node *dev, int index, struct
355 return irq; 356 return irq;
356} 357}
357 358
359static inline void __iomem *of_iomap(struct device_node *np, int index)
360{
361 struct resource res;
362
363 if (of_address_to_resource(np, index, &res))
364 return NULL;
365
366 return ioremap(res.start, 1 + res.end - res.start);
367}
368
358 369
359#endif /* __KERNEL__ */ 370#endif /* __KERNEL__ */
360#endif /* _POWERPC_PROM_H */ 371#endif /* _POWERPC_PROM_H */