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>

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>
Masahiro Yamada · Tom Rini
1 parent b27af39935
Showing 1 changed file with 44 additions and 0 deletions Side-by-side Diff
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)
...	...	@@ -9,6 +9,50 @@
9	9	#include <linux/types.h>
10	10	#include <asm/io.h>
11	11
	12	+static inline u8 ioread8(const volatile void __iomem *addr)
	13	+{
	14	+ return readb(addr);
	15	+}
	16	+
	17	+static inline u16 ioread16(const volatile void __iomem *addr)
	18	+{
	19	+ return readw(addr);
	20	+}
	21	+
	22	+static inline u32 ioread32(const volatile void __iomem *addr)
	23	+{
	24	+ return readl(addr);
	25	+}
	26	+
	27	+#ifdef CONFIG_64BIT
	28	+static inline u64 ioread64(const volatile void __iomem *addr)
	29	+{
	30	+ return readq(addr);
	31	+}
	32	+#endif /* CONFIG_64BIT */
	33	+
	34	+static inline void iowrite8(u8 value, volatile void __iomem *addr)
	35	+{
	36	+ writeb(value, addr);
	37	+}
	38	+
	39	+static inline void iowrite16(u16 value, volatile void __iomem *addr)
	40	+{
	41	+ writew(value, addr);
	42	+}
	43	+
	44	+static inline void iowrite32(u32 value, volatile void __iomem *addr)
	45	+{
	46	+ writel(value, addr);
	47	+}
	48	+
	49	+#ifdef CONFIG_64BIT
	50	+static inline void iowrite64(u64 value, volatile void __iomem *addr)
	51	+{
	52	+ writeq(value, addr);
	53	+}
	54	+#endif /* CONFIG_64BIT */
	55	+
12	56	#ifndef CONFIG_HAVE_ARCH_IOREMAP
13	57	static inline void __iomem *ioremap(resource_size_t offset,
14	58	resource_size_t size)