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Commit 35dbc0e0 authored by Mike Frysinger's avatar Mike Frysinger Committed by Arnd Bergmann
Browse files

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



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: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent d852a6af

include/asm-generic/io.h

+26 −0
Original line number Diff line number Diff line
@@ -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)