Commit 6bf05fd7 authored by Christian Krafft's avatar Christian Krafft Committed by Arnd Bergmann

[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: default avatarChristian Krafft <krafft@de.ibm.com>
Signed-off-by: default avatarArnd Bergmann <arnd.bergmann@de.ibm.com>
parent 4a065f94
......@@ -33,7 +33,7 @@
#include <asm/of_platform.h>
#include <asm/io.h>
#include <asm/pmi.h>
#include <asm/prom.h>
struct pmi_data {
struct list_head handler;
......@@ -49,21 +49,6 @@ struct pmi_data {
};
static void __iomem *of_iomap(struct device_node *np)
{
struct resource res;
if (of_address_to_resource(np, 0, &res))
return NULL;
pr_debug("Resource start: 0x%lx\n", res.start);
pr_debug("Resource end: 0x%lx\n", res.end);
return ioremap(res.start, 1 + res.end - res.start);
}
static int pmi_irq_handler(int irq, void *dev_id)
{
struct pmi_data *data;
......@@ -154,7 +139,7 @@ static int pmi_of_probe(struct of_device *dev,
goto out;
}
data->pmi_reg = of_iomap(np);
data->pmi_reg = of_iomap(np, 0);
if (!data->pmi_reg) {
printk(KERN_ERR "pmi: invalid register address.\n");
rc = -EFAULT;
......
......@@ -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 */
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