diff options
Diffstat (limited to 'drivers/hwmon/pmbus/pmbus_core.c')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 7ec04934747e..95e95783972a 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2827,9 +2827,13 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned if (status < 0) return status; - if (pmbus_regulator_is_enabled(rdev) && (status & PB_STATUS_OFF)) - *flags |= REGULATOR_ERROR_FAIL; + if (pmbus_regulator_is_enabled(rdev)) { + if (status & PB_STATUS_OFF) + *flags |= REGULATOR_ERROR_FAIL; + if (status & PB_STATUS_POWER_GOOD_N) + *flags |= REGULATOR_ERROR_REGULATION_OUT; + } /* * Unlike most other status bits, PB_STATUS_{IOUT_OC,VOUT_OV} are * defined strictly as fault indicators (not warnings). @@ -2851,6 +2855,49 @@ static int pmbus_regulator_get_error_flags(struct regulator_dev *rdev, unsigned return 0; } +static int pmbus_regulator_get_status(struct regulator_dev *rdev) +{ + struct device *dev = rdev_get_dev(rdev); + struct i2c_client *client = to_i2c_client(dev->parent); + struct pmbus_data *data = i2c_get_clientdata(client); + u8 page = rdev_get_id(rdev); + int status, ret; + + mutex_lock(&data->update_lock); + status = pmbus_get_status(client, page, PMBUS_STATUS_WORD); + if (status < 0) { + ret = status; + goto unlock; + } + + if (status & PB_STATUS_OFF) { + ret = REGULATOR_STATUS_OFF; + goto unlock; + } + + /* If regulator is ON & reports power good then return ON */ + if (!(status & PB_STATUS_POWER_GOOD_N)) { + ret = REGULATOR_STATUS_ON; + goto unlock; + } + + ret = pmbus_regulator_get_error_flags(rdev, &status); + if (ret) + goto unlock; + + if (status & (REGULATOR_ERROR_UNDER_VOLTAGE | REGULATOR_ERROR_OVER_CURRENT | + REGULATOR_ERROR_REGULATION_OUT | REGULATOR_ERROR_FAIL | REGULATOR_ERROR_OVER_TEMP)) { + ret = REGULATOR_STATUS_ERROR; + goto unlock; + } + + ret = REGULATOR_STATUS_UNDEFINED; + +unlock: + mutex_unlock(&data->update_lock); + return ret; +} + static int pmbus_regulator_get_low_margin(struct i2c_client *client, int page) { struct pmbus_data *data = i2c_get_clientdata(client); @@ -2991,6 +3038,7 @@ const struct regulator_ops pmbus_regulator_ops = { .disable = pmbus_regulator_disable, .is_enabled = pmbus_regulator_is_enabled, .get_error_flags = pmbus_regulator_get_error_flags, + .get_status = pmbus_regulator_get_status, .get_voltage = pmbus_regulator_get_voltage, .set_voltage = pmbus_regulator_set_voltage, .list_voltage = pmbus_regulator_list_voltage, |