[PATCH v2 4/7] mfd: ssbi: Add regmap read/write helpers

Stephen Boyd
2013-12-23T20:46:14Z

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

Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/mfd/ssbi.c | 13 +++++++++++++
include/linux/ssbi.h | 3 +++
2 files changed, 16 insertions(+)

diff --git a/drivers/mfd/ssbi.c b/drivers/mfd/ssbi.c
index b78942e..c5d270f 100644
--- a/drivers/mfd/ssbi.c
+++ b/drivers/mfd/ssbi.c
@@ -269,6 +269,19 @@ int ssbi_write(struct device *dev, u16 addr, const u8 *buf, int len)
}
EXPORT_SYMBOL_GPL(ssbi_write);

+int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+ *val = 0;
+ return ssbi_read(context, reg, (u8 *)val, 1);
+}
+EXPORT_SYMBOL_GPL(ssbi_reg_read);
+
+int ssbi_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+ return ssbi_write(context, reg, (u8 *)&val, 1);
+}
+EXPORT_SYMBOL_GPL(ssbi_reg_write);
+
static int ssbi_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
diff --git a/include/linux/ssbi.h b/include/linux/ssbi.h
index bcbb642..b862f3d 100644
--- a/include/linux/ssbi.h
+++ b/include/linux/ssbi.h
@@ -20,4 +20,7 @@
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);

+int ssbi_reg_read(void *context, unsigned int reg, unsigned int *val);
+int ssbi_reg_write(void *context, unsigned int reg, unsigned int val);
+
#endif
--
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