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regulator: Factor out voltage set operation into a separate function 

Push all the callers of the chip set_voltage() operation out into a single
function to facilitiate future refactoring.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2010-12-12 14:25:50 +00:00 committed by Liam Girdwood
parent d9f0f28717
commit 7579025130
1 changed files with 39 additions and 24 deletions
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63
drivers/regulator/core.c
View File

@ -83,6 +83,8 @@ static int _regulator_get_current_limit(struct regulator_dev *rdev);
static unsigned int _regulator_get_mode(struct regulator_dev *rdev);
static void _notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data);
static int _regulator_do_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV);
static const char *rdev_get_name(struct regulator_dev *rdev)
{
@ -745,22 +747,19 @@ static int machine_constraints_voltage(struct regulator_dev *rdev,
{
struct regulator_ops *ops = rdev->desc->ops;
int ret;
unsigned selector;
/* do we need to apply the constraint voltage */
if (rdev->constraints->apply_uV &&
rdev->constraints->min_uV == rdev->constraints->max_uV &&
ops->set_voltage) {
ret = ops->set_voltage(rdev,
rdev->constraints->min_uV,
rdev->constraints->max_uV,
&selector);
if (ret < 0) {
rdev_err(rdev, "failed to apply %duV constraint\n",
rdev->constraints->min_uV);
rdev->constraints = NULL;
return ret;
}
rdev->constraints->min_uV == rdev->constraints->max_uV) {
ret = _regulator_do_set_voltage(rdev,
rdev->constraints->min_uV,
rdev->constraints->max_uV);
if (ret < 0) {
rdev_err(rdev, "failed to apply %duV constraint\n",
rdev->constraints->min_uV);
rdev->constraints = NULL;
return ret;
}
}
/* constrain machine-level voltage specs to fit
@ -1621,6 +1620,32 @@ int regulator_is_supported_voltage(struct regulator *regulator,
return 0;
}
static int _regulator_do_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
{
int ret;
unsigned int selector;
trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV);
if (rdev->desc->ops->set_voltage) {
ret = rdev->desc->ops->set_voltage(rdev, min_uV, max_uV,
&selector);
if (rdev->desc->ops->list_voltage)
selector = rdev->desc->ops->list_voltage(rdev,
selector);
else
selector = -1;
} else {
ret = -EINVAL;
}
trace_regulator_set_voltage_complete(rdev_get_name(rdev), selector);
return ret;
}
/**
* regulator_set_voltage - set regulator output voltage
* @regulator: regulator source
@ -1643,7 +1668,6 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
{
struct regulator_dev *rdev = regulator->rdev;
int ret;
unsigned selector;
mutex_lock(&rdev->mutex);
@ -1664,16 +1688,7 @@ int regulator_set_voltage(struct regulator *regulator, int min_uV, int max_uV)
if (ret < 0)
goto out;
trace_regulator_set_voltage(rdev_get_name(rdev), min_uV, max_uV);
ret = rdev->desc->ops->set_voltage(rdev, min_uV, max_uV, &selector);
if (rdev->desc->ops->list_voltage)
selector = rdev->desc->ops->list_voltage(rdev, selector);
else
selector = -1;
trace_regulator_set_voltage_complete(rdev_get_name(rdev), selector);
ret = _regulator_do_set_voltage(rdev, min_uV, max_uV);
out:
_notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE, NULL);