Commit 5a6881e8 authored Jun 07, 2012 by Axel Lin Committed by Mark Brown Jun 08, 2012

regulator: core: Handle fixed voltage in map_voltage_linear



Fixed voltage is a kind of linear mapping where n_voltages is 1.
This change allows [list|map]_voltage_linear to be used for fixed
voltage.

For fixed voltage, n_voltages is 1 and the only valid selector is 0.
Thus we actually don't care the uV_step setting.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent 93b07e7b

drivers/regulator/core.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -2070,6 +2070,14 @@ int regulator_map_voltage_linear(struct regulator_dev *rdev,
		{
		int ret, voltage;

		/* Allow uV_step to be 0 for fixed voltage */
		if (rdev->desc->n_voltages == 1 && rdev->desc->uV_step == 0) {
		if (min_uV <= rdev->desc->min_uV && rdev->desc->min_uV <= max_uV)
		return 0;
		else
		return -EINVAL;
		}

		if (!rdev->desc->uV_step) {
		BUG_ON(!rdev->desc->uV_step);
		return -EINVAL;