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mfd: ssbi: Add regmap read/write helpers 

Add read and write helper functions that the pm8921-core driver
can use to read and write ssbi registers via a "no-bus" regmap.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Stephen Boyd 2014-02-26 10:59:22 -08:00 committed by Lee Jones
parent dc1a95ccaa
commit 559c04f6f1
1 changed files with 20 additions and 0 deletions
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20
include/linux/ssbi.h
View File

@ -20,4 +20,24 @@
int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len);
int ssbi_read(struct device *dev, u16 addr, u8 *buf, int len);
static inline int
ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
{
int ret;
u8 v;
ret = ssbi_read(context, reg, &v, 1);
if (!ret)
*val = v;
return ret;
}
static inline int
ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
{
u8 v = val;
return ssbi_write(context, reg, &v, 1);
}
#endif