diff options
| author | Mårten Lindahl <marten.lindahl@axis.com> | 2022-06-14 12:51:44 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-07-13 18:38:20 +0300 |
| commit | 4a235369dae5aa366c007fa46f670375cd845374 (patch) | |
| tree | 356423d6cb1795e9f83e8c62a14d9099ea75651a /drivers/hwmon/pmbus/pmbus.h | |
| parent | 2a20db9bfc42b71fa311ace70265ba16f5a3ab80 (diff) | |
| download | linux-4a235369dae5aa366c007fa46f670375cd845374.tar.xz | |
hwmon: (pmbus/ltc2978) Set voltage resolution
The LTC2977 regulator does not set the regulator_desc .n_voltages value
which is needed in order to let the regulator core list the regulator
voltage range.
This patch defines a regulator_desc with a voltage range, and uses it
for defining voltage resolution for regulators LTC2972/LTC2974/LTC2975/
LTC2977/LTC2978/LTC2979/LTC2980/LTM2987 based on that they all have a 16
bit ADC with the same stepwise 122.07uV resolution. It also scales the
resolution to a 1mV resolution which is easier to handle.
Signed-off-by: Mårten Lindahl <marten.lindahl@axis.com>
Link: https://lore.kernel.org/r/20220614095144.3472305-1-marten.lindahl@axis.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus/pmbus.h')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index c708b60c1b48..7daaf0caf4d3 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -463,8 +463,8 @@ struct pmbus_driver_info { extern const struct regulator_ops pmbus_regulator_ops; -/* Macro for filling in array of struct regulator_desc */ -#define PMBUS_REGULATOR(_name, _id) \ +/* Macros for filling in array of struct regulator_desc */ +#define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step) \ [_id] = { \ .name = (_name # _id), \ .supply_name = "vin", \ @@ -474,8 +474,12 @@ extern const struct regulator_ops pmbus_regulator_ops; .ops = &pmbus_regulator_ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ + .n_voltages = _voltages, \ + .uV_step = _step, \ } +#define PMBUS_REGULATOR(_name, _id) PMBUS_REGULATOR_STEP(_name, _id, 0, 0) + /* Function declarations */ void pmbus_clear_cache(struct i2c_client *client); |