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| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2022-11-24 20:36:42 +0100 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-12-04 16:45:03 -0800 |
| commit | c05f477c4ba36e007c03ff4f834f43bc4e37692b (patch) | |
| tree | 263a2bfffc13d17eb7e36eeb1aed4176e8633f3f /drivers/hwmon | |
| parent | 3ca0f12a02582c3dd4029294ab0245ba77c27a77 (diff) | |
| download | linux-c05f477c4ba36e007c03ff4f834f43bc4e37692b.tar.bz2 | |
hwmon: (pmbus/core) Implement regulator get_status
Add get_status for pmbus_regulator_ops.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Link: https://lore.kernel.org/r/20221124193642.4081054-1-Naresh.Solanki@9elements.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 20ca26e19db7..95e95783972a 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -2855,6 +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); @@ -2995,6 +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, |