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regulator: core: Allow regulators to provide a voltage to selector mapping

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In order to allow more drivers to factor things out into data allow
drivers to provide a mapping function to convert voltages into selectors.
This allows any driver to use set_voltage_sel(). The existing mapping
based on iterating over list_voltage() is provided as an operation which
can be assigned to the new map_voltage() function though for ease of
transition it is treated as the default.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown
2012-05-09 21:16:06 +01:00
parent 5949a7e9ab
commit e843fc4616
2 changed files with 60 additions and 28 deletions
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4
include/linux/regulator/driver.h
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@@ -46,6 +46,7 @@ enum regulator_status {
* The driver should select the voltage closest to min_uV.
* @set_voltage_sel: Set the voltage for the regulator using the specified
* selector.
* @map_voltage: Convert a voltage into a selector
* @get_voltage: Return the currently configured voltage for the regulator.
* @get_voltage_sel: Return the currently configured voltage selector for the
* regulator.
@@ -91,6 +92,7 @@ struct regulator_ops {
/* get/set regulator voltage */
int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV,
unsigned *selector);
int (*map_voltage)(struct regulator_dev *, int min_uV, int max_uV);
int (*set_voltage_sel) (struct regulator_dev *, unsigned selector);
int (*get_voltage) (struct regulator_dev *);
int (*get_voltage_sel) (struct regulator_dev *);
@@ -260,6 +262,8 @@ int rdev_get_id(struct regulator_dev *rdev);
int regulator_mode_to_status(unsigned int);
int regulator_map_voltage_iterate(struct regulator_dev *rdev,
int min_uV, int max_uV);
int regulator_get_voltage_sel_regmap(struct regulator_dev *rdev);
int regulator_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel);
int regulator_is_enabled_regmap(struct regulator_dev *rdev);