static int lp872x_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct lp872x *lp = rdev_get_drvdata(rdev);
enum lp872x_regulator_id buck = rdev_get_id(rdev);
u8 addr, mask, shift, val;
switch (buck) {
case LP8720_ID_BUCK:
addr = LP8720_BUCK_VOUT2;
mask = LP8720_BUCK_FPWM_M;
shift = LP8720_BUCK_FPWM_S;
break;
case LP8725_ID_BUCK1:
addr = LP8725_BUCK_CTRL;
mask = LP8725_BUCK1_FPWM_M;
shift = LP8725_BUCK1_FPWM_S;
break;
case LP8725_ID_BUCK2:
addr = LP8725_BUCK_CTRL;
mask = LP8725_BUCK2_FPWM_M;
shift = LP8725_BUCK2_FPWM_S;
break;
default:
return -EINVAL;
}
if (mode == REGULATOR_MODE_FAST)
val = LP872X_FORCE_PWM << shift;
else if (mode == REGULATOR_MODE_NORMAL)
val = LP872X_AUTO_PWM << shift;
else
return -EINVAL;
return lp872x_update_bits(lp, addr, mask, val);
}
static int lp8725_buck_set_current_limit(struct regulator_dev *rdev,
int min_uA, int max_uA)
{
struct lp872x *lp = rdev_get_drvdata(rdev);
enum lp872x_regulator_id buck = rdev_get_id(rdev);
int i, max = ARRAY_SIZE(lp8725_buck_uA);
u8 addr, val;
switch (buck) {
case LP8725_ID_BUCK1:
addr = LP8725_BUCK1_VOUT2;
break;
case LP8725_ID_BUCK2:
addr = LP8725_BUCK2_VOUT2;
break;
default:
return -EINVAL;
}
for (i = 0 ; i < max ; i++)
if (lp8725_buck_uA[i] >= min_uA &&
lp8725_buck_uA[i] <= max_uA)
break;
if (i == max)
return -EINVAL;
val = i << LP8725_BUCK_CL_S;
return lp872x_update_bits(lp, addr, LP8725_BUCK_CL_M, val);
}
static int lp872x_init_dvs(struct lp872x *lp)
{
int ret, gpio;
struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL;
enum lp872x_dvs_state pinstate;
u8 mask[] = { LP8720_EXT_DVS_M, LP8725_DVS1_M | LP8725_DVS2_M };
u8 default_dvs_mode[] = { LP8720_DEFAULT_DVS, LP8725_DEFAULT_DVS };
if (!dvs)
goto set_default_dvs_mode;
gpio = dvs->gpio;
if (!gpio_is_valid(gpio)) {
dev_warn(lp->dev, "invalid gpio: %d\n", gpio);
goto set_default_dvs_mode;
}
pinstate = dvs->init_state;
ret = devm_gpio_request_one(lp->dev, gpio, pinstate, "LP872X DVS");
if (ret) {
dev_err(lp->dev, "gpio request err: %d\n", ret);
return ret;
}
lp->dvs_pin = pinstate;
lp->dvs_gpio = gpio;
return 0;
set_default_dvs_mode:
return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid],
default_dvs_mode[lp->chipid]);
}
static int lp872x_buck_set_voltage_sel(struct regulator_dev *rdev,
unsigned selector)
{
struct lp872x *lp = rdev_get_drvdata(rdev);
enum lp872x_regulator_id buck = rdev_get_id(rdev);
u8 addr, mask = LP872X_VOUT_M;
struct lp872x_dvs *dvs = lp->pdata->dvs;
if (dvs && gpio_is_valid(dvs->gpio))
lp872x_set_dvs(lp, dvs->gpio);
addr = lp872x_select_buck_vout_addr(lp, buck);
if (!lp872x_is_valid_buck_addr(addr))
return -EINVAL;
return lp872x_update_bits(lp, addr, mask, selector);
}
