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regulator: regmap helpers - support overlapping linear ranges

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Don't give up voltage mapping if first range with suitable min/max uV
does not provide the wanted voltage.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Matti Vaittinen 2018-08-22 12:53:27 +03:00 committed by Mark Brown
parent 61b2e6741e
commit e7d80b6b84
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GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 6 deletions
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13
drivers/regulator/helpers.c
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@ -321,17 +321,18 @@ int regulator_map_voltage_linear_range(struct regulator_dev *rdev,
ret += range->min_sel; ret += range->min_sel;
break; /*
* Map back into a voltage to verify we're still in bounds.
* If we are not, then continue checking rest of the ranges.
*/
voltage = rdev->desc->ops->list_voltage(rdev, ret);
if (voltage >= min_uV && voltage <= max_uV)
break;
} }
if (i == rdev->desc->n_linear_ranges) if (i == rdev->desc->n_linear_ranges)
return -EINVAL; return -EINVAL;
/* Map back into a voltage to verify we're still in bounds */
voltage = rdev->desc->ops->list_voltage(rdev, ret);
if (voltage < min_uV || voltage > max_uV)
return -EINVAL;
return ret; return ret;
} }
EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range); EXPORT_SYMBOL_GPL(regulator_map_voltage_linear_range);