diff options
| -rw-r--r-- | Documentation/hwmon/max34440 | 6 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/max34440.c | 63 |
2 files changed, 69 insertions, 0 deletions
diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440 index 6c525dd07d5..8ab51536a1e 100644 --- a/Documentation/hwmon/max34440 +++ b/Documentation/hwmon/max34440 @@ -56,6 +56,8 @@ 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]_highest Historical maximum voltage. +in[1-6]_reset_history Write any value to reset history. curr[1-6]_label "iout[1-6]". curr[1-6]_input Measured current. From READ_IOUT register. @@ -63,6 +65,8 @@ curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register. curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register. curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status. curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status. +curr[1-6]_highest Historical maximum current. +curr[1-6]_reset_history Write any value to reset history. in6 and curr6 attributes only exist for MAX34440. @@ -75,5 +79,7 @@ temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register. temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register. temp[1-8]_max_alarm Temperature high alarm. temp[1-8]_crit_alarm Temperature critical high alarm. +temp[1-8]_highest Historical maximum temperature. +temp[1-8]_reset_history Write any value to reset history. temp7 and temp8 attributes only exist for MAX34440. diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c index 2e30046a116..fda621d2e45 100644 --- a/drivers/hwmon/pmbus/max34440.c +++ b/drivers/hwmon/pmbus/max34440.c @@ -27,11 +27,70 @@ enum chips { max34440, max34441 }; +#define MAX34440_MFR_VOUT_PEAK 0xd4 +#define MAX34440_MFR_IOUT_PEAK 0xd5 +#define MAX34440_MFR_TEMPERATURE_PEAK 0xd6 + #define MAX34440_STATUS_OC_WARN (1 << 0) #define MAX34440_STATUS_OC_FAULT (1 << 1) #define MAX34440_STATUS_OT_FAULT (1 << 5) #define MAX34440_STATUS_OT_WARN (1 << 6) +static int max34440_read_word_data(struct i2c_client *client, int page, int reg) +{ + int ret; + + switch (reg) { + case PMBUS_VIRT_READ_VOUT_MAX: + ret = pmbus_read_word_data(client, page, + MAX34440_MFR_VOUT_PEAK); + break; + case PMBUS_VIRT_READ_IOUT_MAX: + ret = pmbus_read_word_data(client, page, + MAX34440_MFR_IOUT_PEAK); + break; + case PMBUS_VIRT_READ_TEMP_MAX: + ret = pmbus_read_word_data(client, page, + MAX34440_MFR_TEMPERATURE_PEAK); + break; + case PMBUS_VIRT_RESET_VOUT_HISTORY: + case PMBUS_VIRT_RESET_IOUT_HISTORY: + case PMBUS_VIRT_RESET_TEMP_HISTORY: + ret = 0; + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static int max34440_write_word_data(struct i2c_client *client, int page, + int reg, u16 word) +{ + int ret; + + switch (reg) { + case PMBUS_VIRT_RESET_VOUT_HISTORY: + ret = pmbus_write_word_data(client, page, + MAX34440_MFR_VOUT_PEAK, 0); + break; + case PMBUS_VIRT_RESET_IOUT_HISTORY: + ret = pmbus_write_word_data(client, page, + MAX34440_MFR_IOUT_PEAK, 0); + break; + case PMBUS_VIRT_RESET_TEMP_HISTORY: + ret = pmbus_write_word_data(client, page, + MAX34440_MFR_TEMPERATURE_PEAK, + 0xffff); + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + static int max34440_read_byte_data(struct i2c_client *client, int page, int reg) { int ret; @@ -109,6 +168,8 @@ static struct pmbus_driver_info max34440_info[] = { .func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, .func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, .read_byte_data = max34440_read_byte_data, + .read_word_data = max34440_read_word_data, + .write_word_data = max34440_write_word_data, }, [max34441] = { .pages = 12, @@ -150,6 +211,8 @@ static struct pmbus_driver_info max34440_info[] = { .func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, .func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, .read_byte_data = max34440_read_byte_data, + .read_word_data = max34440_read_word_data, + .write_word_data = max34440_write_word_data, }, }; |