hwmon: (pmbus/core) Add min_uV in pmbus regulator helper macro

Some regulator operates in a range of voltage which should not allow
below the lower threshold.

Signed-off-by: Saravanan Sekar <saravanan@linumiz.com>
Link: https://lore.kernel.org/r/20221207173716.123223-2-saravanan@linumiz.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index 79f480b4425d25891379aa7a2a2cbca97b760e48..91df8e895147272d0384616c53c24f45e804c476 100644 (file)
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -570,14 +570,14 @@ 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 10fb17879f8ed986cc6146897a8270ddd3d1f10b..713ea79154259be5971a3433d4da14b68070dbb2 100644 (file)
--- 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 */