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regulator: palmas: Fix off-by-one for ramp_delay and register value mapping

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Datasheet says:
Time Step (TSTEP) selection, when changing the output voltage, the new value is
reached through successive voltage steps (if not bypassed). The equivalent
programmable slew rate of the output voltage is:

TSTEP[1:0]: 00 Jump (no slope control)
TSTEP[1:0]: 01 10mV/us
TSTEP[1:0]: 10 5mV/us (default)
TSTEP[1:0]: 11 2.5mV/us

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2013-04-22 18:22:49 +08:00 committed by Mark Brown
parent e31089c608
commit 0ea34b5786
1 changed files with 2 additions and 2 deletions
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4
drivers/regulator/palmas-regulator.c
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@ -447,9 +447,9 @@ static int palmas_smps_set_ramp_delay(struct regulator_dev *rdev,
if (ramp_delay <= 0) if (ramp_delay <= 0)
reg = 0; reg = 0;
else if (ramp_delay < 2500) else if (ramp_delay <= 2500)
reg = 3; reg = 3;
else if (ramp_delay < 5000) else if (ramp_delay <= 5000)
reg = 2; reg = 2;
else else
reg = 1; reg = 1;