static int wm8350_ldo_set_voltage(struct regulator_dev *rdev, int min_uV,
int max_uV, unsigned *selector)
{
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
int volt_reg, ldo = rdev_get_id(rdev), mV, min_mV = min_uV / 1000,
max_mV = max_uV / 1000;
u16 val;
if (min_mV < 900 || min_mV > 3300)
return -EINVAL;
if (max_mV < 900 || max_mV > 3300)
return -EINVAL;
if (min_mV < 1800) {
/* step size is 50mV < 1800mV */
mV = (min_mV - 851) / 50;
if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
return -EINVAL;
BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
} else {
/* step size is 100mV > 1800mV */
mV = ((min_mV - 1701) / 100) + 16;
if (wm8350_ldo_val_to_mvolts(mV) > max_mV)
return -EINVAL;
BUG_ON(wm8350_ldo_val_to_mvolts(mV) < min_mV);
}
switch (ldo) {
case WM8350_LDO_1:
volt_reg = WM8350_LDO1_CONTROL;
break;
case WM8350_LDO_2:
volt_reg = WM8350_LDO2_CONTROL;
break;
case WM8350_LDO_3:
volt_reg = WM8350_LDO3_CONTROL;
break;
case WM8350_LDO_4:
volt_reg = WM8350_LDO4_CONTROL;
break;
default:
return -EINVAL;
}
*selector = mV;
/* all LDOs have same mV bits */
val = wm8350_reg_read(wm8350, volt_reg) & ~WM8350_LDO1_VSEL_MASK;
wm8350_reg_write(wm8350, volt_reg, val | mV);
return 0;
}
static int wm8350_ldo_list_voltage(struct regulator_dev *rdev,
unsigned selector)
{
if (selector > WM8350_LDO1_VSEL_MASK)
return -EINVAL;
return wm8350_ldo_val_to_mvolts(selector) * 1000;
}
static int wm8350_ldo_get_voltage(struct regulator_dev *rdev)
{
struct wm8350 *wm8350 = rdev_get_drvdata(rdev);
int volt_reg, ldo = rdev_get_id(rdev);
u16 val;
switch (ldo) {
case WM8350_LDO_1:
volt_reg = WM8350_LDO1_CONTROL;
break;
case WM8350_LDO_2:
volt_reg = WM8350_LDO2_CONTROL;
break;
case WM8350_LDO_3:
volt_reg = WM8350_LDO3_CONTROL;
break;
case WM8350_LDO_4:
volt_reg = WM8350_LDO4_CONTROL;
break;
default:
return -EINVAL;
}
/* all LDOs have same mV bits */
val = wm8350_reg_read(wm8350, volt_reg) & WM8350_LDO1_VSEL_MASK;
return wm8350_ldo_val_to_mvolts(val) * 1000;
}
