regulator: core: Use list_voltage() to read single voltage regulators
If the regulator doesn't supply a way of reading back the voltage but does provide a list_voltage() operation then use that with a selector of zero to read the voltage. Regulators doing this means that we have the list operation there for consumers that want to configure themselves. Reported-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -2395,6 +2395,8 @@ static int _regulator_get_voltage(struct regulator_dev *rdev)
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ret = rdev->desc->ops->list_voltage(rdev, sel);
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ret = rdev->desc->ops->list_voltage(rdev, sel);
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} else if (rdev->desc->ops->get_voltage) {
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} else if (rdev->desc->ops->get_voltage) {
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ret = rdev->desc->ops->get_voltage(rdev);
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ret = rdev->desc->ops->get_voltage(rdev);
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} else if (rdev->desc->ops->list_voltage) {
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ret = rdev->desc->ops->list_voltage(rdev, 0);
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} else {
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} else {
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return -EINVAL;
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return -EINVAL;
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}
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}
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