[PATCH] regulator: core: Define regulator_set_voltage_triplet()

[Viresh Kumar]

Voltage tolerance isn't necessarily same on both sides of the target
voltage and regulator_set_voltage_tol() wouldn't be suitable in such
cases.

Add another routine regulator_set_voltage_triplet(), which accepts
target, min and max voltages as arguments.

This first tries to set the voltage between the target voltage and the
upper limit, then fall back on the full range. The idea behind this is
to set regulator's voltage as close to the target voltage, as possible.

Based on regulator_set_voltage_tol().

Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 include/linux/regulator/consumer.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index f8a689e..e325d46 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -552,6 +552,16 @@ static inline int regulator_count_voltages(struct regulator *regulator)
 }
 #endif
 
+static inline int regulator_set_voltage_triplet(struct regulator *regulator,
+						int min_uV, int target_uV,
+						int max_uV)
+{
+	if (regulator_set_voltage(regulator, target_uV, max_uV) == 0)
+		return 0;
+
+	return regulator_set_voltage(regulator, min_uV, max_uV);
+}
+
 static inline int regulator_set_voltage_tol(struct regulator *regulator,
 					    int new_uV, int tol_uV)
 {
-- 
2.5.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/