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Commit da6b003a authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt
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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: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 9d4c8262

include/asm-sh/io.h

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