Some regulators can set any voltage within the constraints range,
not being limited to specified operating points.
This patch makes it possible to describe such regulator and makes
the regulator_is_supported_voltage() function behave correctly.
Signed-off-by: Pawel Moll <pawel.m...@arm.com>
---
drivers/regulator/core.c | 5 +++++
include/linux/regulator/driver.h | 3 +++
2 files changed, 8 insertions(+)
Hi Mark,
This is roughly what we discussed last week. Alternatively, it could be
also a "universal" unsigned regulator_desc.flags field with #define
REGULATOR_FLAG_CONTINUOUS_VOLTAGE_RAGE 0x1.
Regards
Pawel
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 4838531..808928a 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1947,6 +1947,11 @@ int regulator_is_supported_voltage(struct regulator
*regulator,
return ret;
}
+ /* Any voltage within constrains range is fine? */
+ if (rdev->desc->continuous_voltage_range)
+ return min_uV >= rdev->constraints->min_uV &&
+ max_uV <= rdev->constraints->max_uV;
+
ret = regulator_count_voltages(regulator);
if (ret < 0)
return ret;
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index bac4c87..2f915b9 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -171,6 +171,8 @@ enum regulator_type {
* @type: Indicates if the regulator is a voltage or current regulator.
* @owner: Module providing the regulator, used for refcounting.
*
+ * @continuous_voltage_range: Indicates if the regulator can set any
+ * voltage within constrains range.
* @n_voltages: Number of selectors available for ops.list_voltage().
*
* @min_uV: Voltage given by the lowest selector (if linear mapping)
@@ -189,6 +191,7 @@ struct regulator_desc {
const char *name;
const char *supply_name;
int id;
+ bool continuous_voltage_range;
unsigned n_voltages;
struct regulator_ops *ops;
int irq;
--
1.7.9.5
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