diff options
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index bcfbda62e3..795dcdb8c1 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -43,6 +43,15 @@ struct regulator { struct device_d *dev; }; +static int regulator_map_voltage(struct regulator_dev *rdev, int min_uV, + int max_uV) +{ + if (rdev->desc->ops->list_voltage == regulator_list_voltage_linear) + return regulator_map_voltage_linear(rdev, min_uV, max_uV); + + return -ENOSYS; +} + static int regulator_enable_internal(struct regulator_internal *ri) { int ret; @@ -86,6 +95,33 @@ static int regulator_disable_internal(struct regulator_internal *ri) return 0; } +static int regulator_set_voltage_internal(struct regulator_internal *ri, + int min_uV, int max_uV) +{ + struct regulator_dev *rdev = ri->rdev; + const struct regulator_ops *ops = rdev->desc->ops; + unsigned int selector; + int best_val = 0; + int ret; + + if (ops->set_voltage_sel) { + ret = regulator_map_voltage(rdev, min_uV, max_uV); + if (ret >= 0) { + best_val = ops->list_voltage(rdev, ret); + if (min_uV <= best_val && max_uV >= best_val) { + selector = ret; + ret = ops->set_voltage_sel(rdev, selector); + } else { + ret = -EINVAL; + } + } + + return ret; + } + + return -ENOSYS; +} + static struct regulator_internal * __regulator_register(struct regulator_dev *rd, const char *name) { struct regulator_internal *ri; @@ -320,6 +356,14 @@ int regulator_disable(struct regulator *r) return regulator_disable_internal(r->ri); } +int regulator_set_voltage(struct regulator *r, int min_uV, int max_uV) +{ + if (!r) + return 0; + + return regulator_set_voltage_internal(r->ri, min_uV, max_uV); +} + static void regulator_print_one(struct regulator_internal *ri) { struct regulator *r; |