[PATCH] asm-generic/io.h: allow people to override individual funcs

Mike Frysinger
2010-10-18T07:07:23Z

For the Blackfin port, we can use much of the asm-generic/io.h header,
but we still need to declare some of our own versions of functions.
Like the __raw_read* and in/out "string" helpers. So let people do
this easily for many of these funcs.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
include/asm-generic/io.h | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 118601f..3577ca1 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -19,7 +19,9 @@
#include <asm-generic/iomap.h>
#endif

+#ifndef mmiowb
#define mmiowb() do {} while (0)
+#endif

/*****************************************************************************/
/*
@@ -28,39 +30,51 @@
* differently. On the simple architectures, we just read/write the
* memory location directly.
*/
+#ifndef __raw_readb
static inline u8 __raw_readb(const volatile void __iomem *addr)
{
return *(const volatile u8 __force *) addr;
}
+#endif

+#ifndef __raw_readw
static inline u16 __raw_readw(const volatile void __iomem *addr)
{
return *(const volatile u16 __force *) addr;
}
+#endif

+#ifndef __raw_readl
static inline u32 __raw_readl(const volatile void __iomem *addr)
{
return *(const volatile u32 __force *) addr;
}
+#endif

#define readb __raw_readb
#define readw(addr) __le16_to_cpu(__raw_readw(addr))
#define readl(addr) __le32_to_cpu(__raw_readl(addr))

+#ifndef __raw_writeb
static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
{
*(volatile u8 __force *) addr = b;
}
+#endif

+#ifndef __raw_writew
static inline void __raw_writew(u16 b, volatile void __iomem *addr)
{
*(volatile u16 __force *) addr = b;
}
+#endif

+#ifndef __raw_writel
static inline void __raw_writel(u32 b, volatile void __iomem *addr)
{
*(volatile u32 __force *) addr = b;
}
+#endif

#define writeb __raw_writeb
#define writew(b,addr) __raw_writew(__cpu_to_le16(b),addr)
@@ -122,6 +136,7 @@ static inline void outl(u32 b, unsigned long addr)
#define outw_p(x, addr) outw((x), (addr))
#define outl_p(x, addr) outl((x), (addr))

+#ifndef insb
static inline void insb(unsigned long addr, void *buffer, int count)
{
if (count) {
@@ -132,7 +147,9 @@ static inline void insb(unsigned long addr, void *buffer, int count)
} while (--count);
}
}
+#endif

+#ifndef insw
static inline void insw(unsigned long addr, void *buffer, int count)
{
if (count) {
@@ -143,7 +160,9 @@ static inline void insw(unsigned long addr, void *buffer, int count)
} while (--count);
}
}
+#endif

+#ifndef insl
static inline void insl(unsigned long addr, void *buffer, int count)
{
if (count) {
@@ -154,7 +173,9 @@ static inline void insl(unsigned long addr, void *buffer, int count)
} while (--count);
}
}
+#endif

+#ifndef outsb
static inline void outsb(unsigned long addr, const void *buffer, int count)
{
if (count) {
@@ -164,7 +185,9 @@ static inline void outsb(unsigned long addr, const void *buffer, int count)
} while (--count);
}
}
+#endif

+#ifndef outsw
static inline void outsw(unsigned long addr, const void *buffer, int count)
{
if (count) {
@@ -174,7 +197,9 @@ static inline void outsw(unsigned long addr, const void *buffer, int count)
} while (--count);
}
}
+#endif

+#ifndef outsl
static inline void outsl(unsigned long addr, const void *buffer, int count)
{
if (count) {
@@ -184,6 +209,7 @@ static inline void outsl(unsigned long addr, const void *buffer, int count)
} while (--count);
}
}
+#endif

#ifndef CONFIG_GENERIC_IOMAP
#define ioread8(addr) readb(addr)
--
1.7.3.1