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regulator: lp3972: Convert to get_voltage_sel 

regulator_list_voltage_table() returns -EINVAL if selector >= n_voltages.
Thus we don't need to check if reg is greater than LP3972_BUCK_VOL_MAX_IDX in
lp3972_[ldo|dcdc]_get_voltage_sel.

LP3972_BUCK_VOL_MIN_IDX and LP3972_BUCK_VOL_MAX_IDX are not used, remove them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-12-28 08:23:16 +08:00 committed by Mark Brown
parent d1c3ed669a
commit c8c14a393b
1 changed files with 6 additions and 16 deletions
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22
drivers/regulator/lp3972.c
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@ -165,8 +165,6 @@ static const int buck_base_addr[] = {
#define LP3972_BUCK_VOL_ENABLE_REG(x) (buck_vol_enable_addr[x])
#define LP3972_BUCK_VOL1_REG(x) (buck_base_addr[x])
#define LP3972_BUCK_VOL_MASK 0x1f
#define LP3972_BUCK_VOL_MIN_IDX(x) ((x) ? 0x01 : 0x00)
#define LP3972_BUCK_VOL_MAX_IDX(x) ((x) ? 0x19 : 0x1f)
static int lp3972_i2c_read(struct i2c_client *i2c, char reg, int count,
u16 *dest)
@ -257,7 +255,7 @@ static int lp3972_ldo_disable(struct regulator_dev *dev)
mask, 0);
}
static int lp3972_ldo_get_voltage(struct regulator_dev *dev)
static int lp3972_ldo_get_voltage_sel(struct regulator_dev *dev)
{
struct lp3972 *lp3972 = rdev_get_drvdata(dev);
int ldo = rdev_get_id(dev) - LP3972_LDO1;
@ -267,7 +265,7 @@ static int lp3972_ldo_get_voltage(struct regulator_dev *dev)
reg = lp3972_reg_read(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo));
val = (reg >> LP3972_LDO_VOL_CONTR_SHIFT(ldo)) & mask;
return dev->desc->volt_table[val];
return val;
}
static int lp3972_ldo_set_voltage_sel(struct regulator_dev *dev,
@ -314,7 +312,7 @@ static struct regulator_ops lp3972_ldo_ops = {
.is_enabled = lp3972_ldo_is_enabled,
.enable = lp3972_ldo_enable,
.disable = lp3972_ldo_disable,
.get_voltage = lp3972_ldo_get_voltage,
.get_voltage_sel = lp3972_ldo_get_voltage_sel,
.set_voltage_sel = lp3972_ldo_set_voltage_sel,
};
@ -353,24 +351,16 @@ static int lp3972_dcdc_disable(struct regulator_dev *dev)
return val;
}
static int lp3972_dcdc_get_voltage(struct regulator_dev *dev)
static int lp3972_dcdc_get_voltage_sel(struct regulator_dev *dev)
{
struct lp3972 *lp3972 = rdev_get_drvdata(dev);
int buck = rdev_get_id(dev) - LP3972_DCDC1;
u16 reg;
int val;
reg = lp3972_reg_read(lp3972, LP3972_BUCK_VOL1_REG(buck));
reg &= LP3972_BUCK_VOL_MASK;
if (reg <= LP3972_BUCK_VOL_MAX_IDX(buck))
val = dev->desc->volt_table[reg];
else {
val = 0;
dev_warn(&dev->dev, "chip reported incorrect voltage value."
" reg = %d\n", reg);
}
return val;
return reg;
}
static int lp3972_dcdc_set_voltage_sel(struct regulator_dev *dev,
@ -402,7 +392,7 @@ static struct regulator_ops lp3972_dcdc_ops = {
.is_enabled = lp3972_dcdc_is_enabled,
.enable = lp3972_dcdc_enable,
.disable = lp3972_dcdc_disable,
.get_voltage = lp3972_dcdc_get_voltage,
.get_voltage_sel = lp3972_dcdc_get_voltage_sel,
.set_voltage_sel = lp3972_dcdc_set_voltage_sel,
};