diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2017-08-26 01:02:39 +0900 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-09-12 18:02:23 -0400 |
| commit | 6c06f8dc4ab02890ef93b50dac129c2b43cc9ea3 (patch) | |
| tree | dedeecaa9e167dc6523c0c8d7fe9f454f2f49829 /include/linux | |
| parent | b27af39935855c88ef2203dcfc1ff54e013237c4 (diff) | |
linux/io.h: import generic ioread* / iowrite* accessors from Linux
Some drivers in Linux (ex. drivers/mtd/nand/denali.c) use
ioread*/iowrite* accessors. Import them to make drivers more
synced. I copied code from include/asm-generic/io.h of Linux.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/io.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/linux/io.h b/include/linux/io.h index a104b7e69f..bf1ddbbaa6 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -9,6 +9,50 @@ #include <linux/types.h> #include <asm/io.h> +static inline u8 ioread8(const volatile void __iomem *addr) +{ + return readb(addr); +} + +static inline u16 ioread16(const volatile void __iomem *addr) +{ + return readw(addr); +} + +static inline u32 ioread32(const volatile void __iomem *addr) +{ + return readl(addr); +} + +#ifdef CONFIG_64BIT +static inline u64 ioread64(const volatile void __iomem *addr) +{ + return readq(addr); +} +#endif /* CONFIG_64BIT */ + +static inline void iowrite8(u8 value, volatile void __iomem *addr) +{ + writeb(value, addr); +} + +static inline void iowrite16(u16 value, volatile void __iomem *addr) +{ + writew(value, addr); +} + +static inline void iowrite32(u32 value, volatile void __iomem *addr) +{ + writel(value, addr); +} + +#ifdef CONFIG_64BIT +static inline void iowrite64(u64 value, volatile void __iomem *addr) +{ + writeq(value, addr); +} +#endif /* CONFIG_64BIT */ + #ifndef CONFIG_HAVE_ARCH_IOREMAP static inline void __iomem *ioremap(resource_size_t offset, resource_size_t size) |