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    Subject[PATCH v3 1/4] hwmon: pm_bus: core: Add min_uV in pmbus regulator helper macro
    Date
    Some regulator operates in a range of voltage which should not allow
    below the lower threshold.

    Signed-off-by: Saravanan Sekar <saravanan@linumiz.com>
    ---
    drivers/hwmon/pmbus/ltc2978.c | 16 ++++++++--------
    drivers/hwmon/pmbus/pmbus.h | 5 +++--
    2 files changed, 11 insertions(+), 10 deletions(-)

    diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
    index 6d2592731ba3..406a36885ef3 100644
    --- a/drivers/hwmon/pmbus/ltc2978.c
    +++ b/drivers/hwmon/pmbus/ltc2978.c
    @@ -569,14 +569,14 @@ MODULE_DEVICE_TABLE(i2c, ltc2978_id);
    #define LTC2978_N_VOLTAGES ((LTC2978_MAX_UV / LTC2978_UV_STEP) + 1)

    static const struct regulator_desc ltc2978_reg_desc[] = {
    - PMBUS_REGULATOR_STEP("vout", 0, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 1, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 2, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 3, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 4, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 5, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 6, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    - PMBUS_REGULATOR_STEP("vout", 7, LTC2978_N_VOLTAGES, LTC2978_UV_STEP),
    + PMBUS_REGULATOR_STEP("vout", 0, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 1, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 2, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 3, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 4, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 5, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 6, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    + PMBUS_REGULATOR_STEP("vout", 7, LTC2978_N_VOLTAGES, LTC2978_UV_STEP, 0),
    };

    static const struct regulator_desc ltc2978_reg_desc_default[] = {
    diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h
    index 10fb17879f8e..713ea7915425 100644
    --- a/drivers/hwmon/pmbus/pmbus.h
    +++ b/drivers/hwmon/pmbus/pmbus.h
    @@ -464,7 +464,7 @@ struct pmbus_driver_info {
    extern const struct regulator_ops pmbus_regulator_ops;

    /* Macros for filling in array of struct regulator_desc */
    -#define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step) \
    +#define PMBUS_REGULATOR_STEP(_name, _id, _voltages, _step, _min_uV) \
    [_id] = { \
    .name = (_name # _id), \
    .id = (_id), \
    @@ -475,9 +475,10 @@ extern const struct regulator_ops pmbus_regulator_ops;
    .owner = THIS_MODULE, \
    .n_voltages = _voltages, \
    .uV_step = _step, \
    + .min_uV = _min_uV, \
    }

    -#define PMBUS_REGULATOR(_name, _id) PMBUS_REGULATOR_STEP(_name, _id, 0, 0)
    +#define PMBUS_REGULATOR(_name, _id) PMBUS_REGULATOR_STEP(_name, _id, 0, 0, 0)

    /* Function declarations */

    --
    2.34.1
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