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sh: add writesb(), readsb(), writesw() and readsw() to io.h 

This patch adds inline versions of writesb(), readsb(), writesw() and
readsw() to include/asm-sh/io.h. Stolen from include/asm-avr32/io.h.

These functions are needed to compile certain device drivers such as
ax88796.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2007-09-10 12:08:42 +09:00 committed by Paul Mundt
parent 9d4c826259
commit da6b003adc
1 changed files with 26 additions and 0 deletions
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26
include/asm-sh/io.h
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@ -135,6 +135,32 @@ void __raw_readsl(unsigned long addr, void *data, int longlen);
# define writel(v,a) ({ __raw_writel((v),(a)); mb(); })
#endif
#define __BUILD_MEMORY_STRING(bwlq, type) \
\
static inline void writes##bwlq(volatile void __iomem *mem, \
const void *addr, unsigned int count) \
{ \
const volatile type *__addr = addr; \
\
while (count--) { \
__raw_write##bwlq(*__addr, mem); \
__addr++; \
} \
} \
\
static inline void reads##bwlq(volatile void __iomem *mem, void *addr, \
unsigned int count) \
{ \
volatile type *__addr = addr; \
\
while (count--) { \
*__addr = __raw_read##bwlq(mem); \
__addr++; \
} \
}
__BUILD_MEMORY_STRING(b, u8)
__BUILD_MEMORY_STRING(w, u16)
#define writesl __raw_writesl
#define readsl __raw_readsl