diff options
| -rw-r--r-- | drivers/regulator/core.c | 64 |
1 files changed, 37 insertions, 27 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 9b43dab16387..c1a49917af24 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -672,31 +672,11 @@ static void print_constraints(struct regulator_dev *rdev) printk(KERN_INFO "regulator: %s: %s\n", rdev->desc->name, buf); } -/** - * set_machine_constraints - sets regulator constraints - * @rdev: regulator source - * @constraints: constraints to apply - * - * Allows platform initialisation code to define and constrain - * regulator circuits e.g. valid voltage/current ranges, etc. NOTE: - * Constraints *must* be set by platform code in order for some - * regulator operations to proceed i.e. set_voltage, set_current_limit, - * set_mode. - */ -static int set_machine_constraints(struct regulator_dev *rdev, - struct regulation_constraints *constraints) +static int machine_constraints_voltage(struct regulator_dev *rdev, + const char *name, struct regulation_constraints *constraints) { - int ret = 0; - const char *name; struct regulator_ops *ops = rdev->desc->ops; - if (constraints->name) - name = constraints->name; - else if (rdev->desc->name) - name = rdev->desc->name; - else - name = "regulator"; - /* constrain machine-level voltage specs to fit * the actual range supported by this regulator. */ @@ -719,14 +699,13 @@ static int set_machine_constraints(struct regulator_dev *rdev, /* voltage constraints are optional */ if ((cmin == 0) && (cmax == 0)) - goto out; + return 0; /* else require explicit machine-level constraints */ if (cmin <= 0 || cmax <= 0 || cmax < cmin) { pr_err("%s: %s '%s' voltage constraints\n", __func__, "invalid", name); - ret = -EINVAL; - goto out; + return -EINVAL; } /* initial: [cmin..cmax] valid, [min_uV..max_uV] not */ @@ -748,8 +727,7 @@ static int set_machine_constraints(struct regulator_dev *rdev, if (max_uV < min_uV) { pr_err("%s: %s '%s' voltage constraints\n", __func__, "unsupportable", name); - ret = -EINVAL; - goto out; + return -EINVAL; } /* use regulator's subset of machine constraints */ @@ -767,6 +745,38 @@ static int set_machine_constraints(struct regulator_dev *rdev, } } + return 0; +} + +/** + * set_machine_constraints - sets regulator constraints + * @rdev: regulator source + * @constraints: constraints to apply + * + * Allows platform initialisation code to define and constrain + * regulator circuits e.g. valid voltage/current ranges, etc. NOTE: + * Constraints *must* be set by platform code in order for some + * regulator operations to proceed i.e. set_voltage, set_current_limit, + * set_mode. + */ +static int set_machine_constraints(struct regulator_dev *rdev, + struct regulation_constraints *constraints) +{ + int ret = 0; + const char *name; + struct regulator_ops *ops = rdev->desc->ops; + + if (constraints->name) + name = constraints->name; + else if (rdev->desc->name) + name = rdev->desc->name; + else + name = "regulator"; + + ret = machine_constraints_voltage(rdev, name, constraints); + if (ret != 0) + goto out; + rdev->constraints = constraints; /* do we need to apply the constraint voltage */ |