diff options
| -rw-r--r-- | Documentation/hwmon/max34440 | 1 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/max34440.c | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440 index 8ab51536a1eb..36b335c461dc 100644 --- a/Documentation/hwmon/max34440 +++ b/Documentation/hwmon/max34440 @@ -56,6 +56,7 @@ in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status. in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status. +in[1-6]_lowest Historical minimum voltage. in[1-6]_highest Historical maximum voltage. in[1-6]_reset_history Write any value to reset history. diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c index 7d830c1e7032..95ee9e195cb6 100644 --- a/drivers/hwmon/pmbus/max34440.c +++ b/drivers/hwmon/pmbus/max34440.c @@ -30,6 +30,7 @@ enum chips { max34440, max34441 }; #define MAX34440_MFR_VOUT_PEAK 0xd4 #define MAX34440_MFR_IOUT_PEAK 0xd5 #define MAX34440_MFR_TEMPERATURE_PEAK 0xd6 +#define MAX34440_MFR_VOUT_MIN 0xd7 #define MAX34440_STATUS_OC_WARN (1 << 0) #define MAX34440_STATUS_OC_FAULT (1 << 1) @@ -41,6 +42,10 @@ static int max34440_read_word_data(struct i2c_client *client, int page, int reg) int ret; switch (reg) { + case PMBUS_VIRT_READ_VOUT_MIN: + ret = pmbus_read_word_data(client, page, + MAX34440_MFR_VOUT_MIN); + break; case PMBUS_VIRT_READ_VOUT_MAX: ret = pmbus_read_word_data(client, page, MAX34440_MFR_VOUT_PEAK); @@ -73,6 +78,10 @@ static int max34440_write_word_data(struct i2c_client *client, int page, switch (reg) { case PMBUS_VIRT_RESET_VOUT_HISTORY: ret = pmbus_write_word_data(client, page, + MAX34440_MFR_VOUT_MIN, 0x7fff); + if (ret) + break; + ret = pmbus_write_word_data(client, page, MAX34440_MFR_VOUT_PEAK, 0); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: |