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regulator: Report actual configured voltage to set_voltage()

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Change the interface used by set_voltage() to report the selected value
to the regulator core in terms of a selector used by list_voltage().
This allows the regulator core to know the voltage that was chosen
without having to do an explict get_voltage(), which would be much more
expensive as it will generally access hardware.

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
2010-11-10 14:38:29 +00:00
committed by Liam Girdwood
parent 63cee94614
commit 3a93f2a9f4
27 changed files with 202 additions and 79 deletions
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5
drivers/regulator/pcf50633-regulator.c
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@@ -108,7 +108,8 @@ static unsigned int ldo_voltage_value(u8 bits)
}
static int pcf50633_regulator_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
int min_uV, int max_uV,
unsigned *selector)
{
struct pcf50633 *pcf;
int regulator_id, millivolts;
@@ -147,6 +148,8 @@ static int pcf50633_regulator_set_voltage(struct regulator_dev *rdev,
return -EINVAL;
}
*selector = volt_bits;
return pcf50633_reg_write(pcf, regnr, volt_bits);
}