hwmon: (max34440) Add support for peak attributes
Add support for voltage, current, and temperature peak (historic maximum) attributes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
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Коммит
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@ -56,6 +56,8 @@ in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
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in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
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in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
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in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
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in[1-6]_highest Historical maximum voltage.
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in[1-6]_reset_history Write any value to reset history.
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curr[1-6]_label "iout[1-6]".
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curr[1-6]_input Measured current. From READ_IOUT register.
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@ -63,6 +65,8 @@ curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
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curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
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curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
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curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
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curr[1-6]_highest Historical maximum current.
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curr[1-6]_reset_history Write any value to reset history.
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in6 and curr6 attributes only exist for MAX34440.
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@ -75,5 +79,7 @@ temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
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temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
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temp[1-8]_max_alarm Temperature high alarm.
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temp[1-8]_crit_alarm Temperature critical high alarm.
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temp[1-8]_highest Historical maximum temperature.
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temp[1-8]_reset_history Write any value to reset history.
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temp7 and temp8 attributes only exist for MAX34440.
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@ -27,11 +27,70 @@
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enum chips { max34440, max34441 };
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#define MAX34440_MFR_VOUT_PEAK 0xd4
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#define MAX34440_MFR_IOUT_PEAK 0xd5
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#define MAX34440_MFR_TEMPERATURE_PEAK 0xd6
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#define MAX34440_STATUS_OC_WARN (1 << 0)
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#define MAX34440_STATUS_OC_FAULT (1 << 1)
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#define MAX34440_STATUS_OT_FAULT (1 << 5)
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#define MAX34440_STATUS_OT_WARN (1 << 6)
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static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
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{
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int ret;
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switch (reg) {
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case PMBUS_VIRT_READ_VOUT_MAX:
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ret = pmbus_read_word_data(client, page,
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MAX34440_MFR_VOUT_PEAK);
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break;
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case PMBUS_VIRT_READ_IOUT_MAX:
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ret = pmbus_read_word_data(client, page,
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MAX34440_MFR_IOUT_PEAK);
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break;
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case PMBUS_VIRT_READ_TEMP_MAX:
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ret = pmbus_read_word_data(client, page,
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MAX34440_MFR_TEMPERATURE_PEAK);
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break;
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case PMBUS_VIRT_RESET_VOUT_HISTORY:
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case PMBUS_VIRT_RESET_IOUT_HISTORY:
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case PMBUS_VIRT_RESET_TEMP_HISTORY:
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ret = 0;
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break;
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default:
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static int max34440_write_word_data(struct i2c_client *client, int page,
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int reg, u16 word)
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{
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int ret;
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switch (reg) {
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case PMBUS_VIRT_RESET_VOUT_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_VOUT_PEAK, 0);
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break;
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case PMBUS_VIRT_RESET_IOUT_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_IOUT_PEAK, 0);
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break;
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case PMBUS_VIRT_RESET_TEMP_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_TEMPERATURE_PEAK,
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0xffff);
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break;
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default:
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
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{
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int ret;
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@ -109,6 +168,8 @@ static struct pmbus_driver_info max34440_info[] = {
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.func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_byte_data = max34440_read_byte_data,
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.read_word_data = max34440_read_word_data,
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.write_word_data = max34440_write_word_data,
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},
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[max34441] = {
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.pages = 12,
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@ -150,6 +211,8 @@ static struct pmbus_driver_info max34440_info[] = {
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.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_byte_data = max34440_read_byte_data,
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.read_word_data = max34440_read_word_data,
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.write_word_data = max34440_write_word_data,
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},
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};
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