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regulator: Convert pcap-regulator to set_voltage_sel 

After converting to set_voltage_sel, we can remove the workaroud of getting
the best match voltage for V1. The core will iterate through the whole voltage
table and find the best match for us.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-03-23 16:49:22 +08:00 committed by Mark Brown
parent 24c896f548
commit d5ec96357d
1 changed files with 6 additions and 27 deletions
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33
drivers/regulator/pcap-regulator.c
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@ -150,40 +150,19 @@ static struct pcap_regulator vreg_table[] = {
VREG_INFO(SW2S, PCAP_REG_LOWPWR, NA, 20, NA, NA), */
};
static int pcap_regulator_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV,
unsigned *selector)
static int pcap_regulator_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
void *pcap = rdev_get_drvdata(rdev);
int uV;
u8 i;
/* the regulator doesn't support voltage switching */
if (vreg->n_voltages == 1)
return -EINVAL;
for (i = 0; i < vreg->n_voltages; i++) {
/* For V1 the first is not the best match */
if (i == 0 && rdev_get_id(rdev) == V1)
i = 1;
else if (i + 1 == vreg->n_voltages && rdev_get_id(rdev) == V1)
i = 0;
uV = vreg->voltage_table[i] * 1000;
if (min_uV <= uV && uV <= max_uV) {
*selector = i;
return ezx_pcap_set_bits(pcap, vreg->reg,
(vreg->n_voltages - 1) << vreg->index,
i << vreg->index);
}
if (i == 0 && rdev_get_id(rdev) == V1)
i = vreg->n_voltages - 1;
}
/* the requested voltage range is not supported by this regulator */
return -EINVAL;
return ezx_pcap_set_bits(pcap, vreg->reg,
(vreg->n_voltages - 1) << vreg->index,
selector << vreg->index);
}
static int pcap_regulator_get_voltage(struct regulator_dev *rdev)
@ -248,7 +227,7 @@ static int pcap_regulator_list_voltage(struct regulator_dev *rdev,
static struct regulator_ops pcap_regulator_ops = {
.list_voltage = pcap_regulator_list_voltage,
.set_voltage = pcap_regulator_set_voltage,
.set_voltage_sel = pcap_regulator_set_voltage_sel,
.get_voltage = pcap_regulator_get_voltage,
.enable = pcap_regulator_enable,
.disable = pcap_regulator_disable,