diff options
| -rw-r--r-- | drivers/regulator/helpers.c | 22 | ||||
| -rw-r--r-- | include/linux/regulator/driver.h | 2 |
2 files changed, 20 insertions, 4 deletions
diff --git a/drivers/regulator/helpers.c b/drivers/regulator/helpers.c index ad2237a95572..586f42e378ee 100644 --- a/drivers/regulator/helpers.c +++ b/drivers/regulator/helpers.c @@ -902,8 +902,21 @@ bool regulator_is_equal(struct regulator *reg1, struct regulator *reg2) } EXPORT_SYMBOL_GPL(regulator_is_equal); -static int find_closest_bigger(unsigned int target, const unsigned int *table, - unsigned int num_sel, unsigned int *sel) +/** + * regulator_find_closest_bigger - helper to find offset in ramp delay table + * + * @target: targeted ramp_delay + * @table: table with supported ramp delays + * @num_sel: number of entries in the table + * @sel: Pointer to store table offset + * + * This is the internal helper used by regulator_set_ramp_delay_regmap to + * map ramp delay to register value. It should only be used directly if + * regulator_set_ramp_delay_regmap cannot handle a specific device setup + * (e.g. because the value is split over multiple registers). + */ +int regulator_find_closest_bigger(unsigned int target, const unsigned int *table, + unsigned int num_sel, unsigned int *sel) { unsigned int s, tmp, max, maxsel = 0; bool found = false; @@ -933,6 +946,7 @@ static int find_closest_bigger(unsigned int target, const unsigned int *table, return 0; } +EXPORT_SYMBOL_GPL(regulator_find_closest_bigger); /** * regulator_set_ramp_delay_regmap - set_ramp_delay() helper @@ -951,8 +965,8 @@ int regulator_set_ramp_delay_regmap(struct regulator_dev *rdev, int ramp_delay) if (WARN_ON(!rdev->desc->n_ramp_values || !rdev->desc->ramp_delay_table)) return -EINVAL; - ret = find_closest_bigger(ramp_delay, rdev->desc->ramp_delay_table, - rdev->desc->n_ramp_values, &sel); + ret = regulator_find_closest_bigger(ramp_delay, rdev->desc->ramp_delay_table, + rdev->desc->n_ramp_values, &sel); if (ret) { dev_warn(rdev_get_dev(rdev), diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index d3b4a3d4514a..c6ef7d68eb9a 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -758,6 +758,8 @@ int regulator_set_current_limit_regmap(struct regulator_dev *rdev, int min_uA, int max_uA); int regulator_get_current_limit_regmap(struct regulator_dev *rdev); void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data); +int regulator_find_closest_bigger(unsigned int target, const unsigned int *table, + unsigned int num_sel, unsigned int *sel); int regulator_set_ramp_delay_regmap(struct regulator_dev *rdev, int ramp_delay); int regulator_sync_voltage_rdev(struct regulator_dev *rdev); |