[PATCH v4 4/8] mfd: ssbi: Add regmap read/write helpers
From: Stephen Boyd <hidden>
Date: 2014-02-26 18:59:40
Also in:
linux-arm-msm, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add read and write helper functions that the pm8921-core driver can use to read and write ssbi registers via a "no-bus" regmap. Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Stephen Boyd <redacted> --- include/linux/ssbi.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)
diff --git a/include/linux/ssbi.h b/include/linux/ssbi.h
index bcbb642a7641..087b08a4d333 100644
--- a/include/linux/ssbi.h
+++ b/include/linux/ssbi.h@@ -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
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