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regulator: core: Support for continuous voltage range

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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.moll@arm.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Pawel Moll 2012-09-24 18:56:53 +01:00 committed by Mark Brown
parent ddffeb8c4d
commit bd7a2b600a
2 changed files with 8 additions and 0 deletions
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5
drivers/regulator/core.c
View File

@ -1979,6 +1979,11 @@ 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;

3
include/linux/regulator/driver.h
View File

@ -181,6 +181,8 @@ 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)
@ -199,6 +201,7 @@ 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;