[PATCH v4 4/8] mfd: ssbi: Add regmap read/write helpers

Stephen Boyd
2014-02-26T18:59:22Z

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 <sboyd@codeaurora.org>
---
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