Commit fb149f9e authored by Jean-Christophe PLAGNIOL-VILLARD's avatar Jean-Christophe PLAGNIOL-VILLARD Committed by Arnd Bergmann
Browse files

at91: add arch specific ioremap support


Signed-off-by: default avatarJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
parent f0051d82
......@@ -21,14 +21,23 @@
#ifndef __ASM_ARCH_IO_H
#define __ASM_ARCH_IO_H
#include <mach/hardware.h>
#define IO_SPACE_LIMIT 0xFFFFFFFF
#define __io(a) __typesafe_io(a)
#define __mem_pci(a) (a)
#ifndef __ASSEMBLY__
#ifndef CONFIG_ARCH_AT91X40
#define __arch_ioremap at91_ioremap
#define __arch_iounmap at91_iounmap
#endif
void __iomem *at91_ioremap(unsigned long phys, size_t size, unsigned int type);
void at91_iounmap(volatile void __iomem *addr);
static inline unsigned int at91_sys_read(unsigned int reg_offset)
{
void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
......
......@@ -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
......
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