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sdio: add sdio_f0_readb() and sdio_f0_writeb()

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Add sdio_f0_readb() and sdio_f0_writeb() functions to reading and
writing function 0 registers.  Writes outside the vendor specific CCCR
registers (0xF0 - 0xFF) are not permitted.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
David Vrabel 2007-08-10 13:29:46 +01:00 • committed by Pierre Ossman
parent d84075c8ae
commit 7806cdb40f
2 changed files with 69 additions and 0 deletions
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5
include/linux/mmc/sdio_func.h
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@ -141,5 +141,10 @@ extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
void *src, int count);
extern unsigned char sdio_f0_readb(struct sdio_func *func,
unsigned int addr, int *err_ret);
extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
unsigned int addr, int *err_ret);
#endif