@@ -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)
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> --- include/linux/io.h | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)