diff options
| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2011-05-07 07:16:00 +0400 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-07-28 19:09:26 +0400 |
| commit | fb149f9e2835446e02e796081635520b881dc351 (patch) | |
| tree | e80f681871748b0bcddaff9383ebed026dd1c55a | |
| parent | f0051d82a68abcf35418d49db1c82e6f0e514d78 (diff) | |
| download | linux-fb149f9e2835446e02e796081635520b881dc351.tar.xz | |
at91: add arch specific ioremap support
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
| -rw-r--r-- | arch/arm/mach-at91/include/mach/io.h | 11 | ||||
| -rw-r--r-- | arch/arm/mach-at91/setup.c | 19 |
2 files changed, 29 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/include/mach/io.h b/arch/arm/mach-at91/include/mach/io.h index 0b0cccc46e68..4298e7806c76 100644 --- a/arch/arm/mach-at91/include/mach/io.h +++ b/arch/arm/mach-at91/include/mach/io.h @@ -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; diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index 816599fce55b..aa64294c7db3 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -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 |