diff options
| -rw-r--r-- | drivers/regulator/rohm-regulator.c | 16 | ||||
| -rw-r--r-- | include/linux/mfd/rohm-generic.h | 7 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/regulator/rohm-regulator.c b/drivers/regulator/rohm-regulator.c index 6e0d9c08ec1c..f97a9a51ee76 100644 --- a/drivers/regulator/rohm-regulator.c +++ b/drivers/regulator/rohm-regulator.c @@ -112,6 +112,22 @@ int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs, } EXPORT_SYMBOL(rohm_regulator_set_dvs_levels); +/* + * Few ROHM PMIC ICs have constrains on voltage changing: + * BD71837 - only buck 1-4 voltages can be changed when they are enabled. + * Other bucks and all LDOs must be disabled when voltage is changed. + * BD96801 - LDO voltage levels can be changed when LDOs are disabled. + */ +int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev, + unsigned int sel) +{ + if (rdev->desc->ops->is_enabled(rdev)) + return -EBUSY; + + return regulator_set_voltage_sel_regmap(rdev, sel); +} +EXPORT_SYMBOL_GPL(rohm_regulator_set_voltage_sel_restricted); + MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); MODULE_DESCRIPTION("Generic helpers for ROHM PMIC regulator drivers"); diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h index 35b392a0d73a..35c5866f48b7 100644 --- a/include/linux/mfd/rohm-generic.h +++ b/include/linux/mfd/rohm-generic.h @@ -80,6 +80,8 @@ int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs, const struct regulator_desc *desc, struct regmap *regmap); +int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev, + unsigned int sel); #else static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs, struct device_node *np, @@ -88,6 +90,11 @@ static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dv { return 0; } +static int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev, + unsigned int sel) +{ + return 0; +} #endif #endif |