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at91: add arch specific ioremap support

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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD
2011-05-07 11:16:00 +08:00
committed by Arnd Bergmann
parent f0051d82a6
commit fb149f9e28
2 changed files with 29 additions and 1 deletions
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19
arch/arm/mach-at91/setup.c
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@ -7,6 +7,7 @@
#include <linux/module.h>
#include <linux/io.h>
#include <linux/mm.h>
#include <asm/mach/map.h>
@ -72,6 +73,24 @@ static struct map_desc at91_io_desc __initdata = {
.type = MT_DEVICE,
};
void __iomem *at91_ioremap(unsigned long p, size_t size, unsigned int type)
{
if (p >= AT91_BASE_SYS && p <= (AT91_BASE_SYS + SZ_16K - 1))
return (void __iomem *)AT91_IO_P2V(p);
return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
}
EXPORT_SYMBOL(at91_ioremap);
void at91_iounmap(volatile void __iomem *addr)
{
unsigned long virt = (unsigned long)addr;
if (virt >= VMALLOC_START && virt < VMALLOC_END)
__iounmap(addr);
}
EXPORT_SYMBOL(at91_iounmap);
#define AT91_DBGU0 0xfffff200
#define AT91_DBGU1 0xffffee00