| Kernel driver adm1275 |
| ===================== |
| |
| Supported chips: |
| * Analog Devices ADM1075 |
| Prefix: 'adm1075' |
| Addresses scanned: - |
| Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf |
| * Analog Devices ADM1275 |
| Prefix: 'adm1275' |
| Addresses scanned: - |
| Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf |
| * Analog Devices ADM1276 |
| Prefix: 'adm1276' |
| Addresses scanned: - |
| Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf |
| |
| Author: Guenter Roeck <guenter.roeck@ericsson.com> |
| |
| |
| Description |
| ----------- |
| |
| This driver supports hardware montoring for Analog Devices ADM1075, ADM1275, |
| and ADM1276 Hot-Swap Controller and Digital Power Monitor. |
| |
| ADM1075, ADM1275, and ADM1276 are hot-swap controllers that allow a circuit |
| board to be removed from or inserted into a live backplane. They also feature |
| current and voltage readback via an integrated 12-bit analog-to-digital |
| converter (ADC), accessed using a PMBus interface. |
| |
| The driver is a client driver to the core PMBus driver. Please see |
| Documentation/hwmon/pmbus for details on PMBus client drivers. |
| |
| |
| Usage Notes |
| ----------- |
| |
| This driver does not auto-detect devices. You will have to instantiate the |
| devices explicitly. Please see Documentation/i2c/instantiating-devices for |
| details. |
| |
| The ADM1075, unlike many other PMBus devices, does not support internal voltage |
| or current scaling. Reported voltages, currents, and power are raw measurements, |
| and will typically have to be scaled. |
| |
| |
| Platform data support |
| --------------------- |
| |
| The driver supports standard PMBus driver platform data. Please see |
| Documentation/hwmon/pmbus for details. |
| |
| |
| Sysfs entries |
| ------------- |
| |
| The following attributes are supported. Limits are read-write, history reset |
| attributes are write-only, all other attributes are read-only. |
| |
| in1_label "vin1" or "vout1" depending on chip variant and |
| configuration. On ADM1075, vout1 reports the voltage on |
| the VAUX pin. |
| in1_input Measured voltage. |
| in1_min Minimum Voltage. |
| in1_max Maximum voltage. |
| in1_min_alarm Voltage low alarm. |
| in1_max_alarm Voltage high alarm. |
| in1_highest Historical maximum voltage. |
| in1_reset_history Write any value to reset history. |
| |
| curr1_label "iout1" |
| curr1_input Measured current. |
| curr1_max Maximum current. |
| curr1_max_alarm Current high alarm. |
| curr1_lcrit Critical minimum current. Depending on the chip |
| configuration, either curr1_lcrit or curr1_crit is |
| supported, but not both. |
| curr1_lcrit_alarm Critical current low alarm. |
| curr1_crit Critical maximum current. Depending on the chip |
| configuration, either curr1_lcrit or curr1_crit is |
| supported, but not both. |
| curr1_crit_alarm Critical current high alarm. |
| curr1_highest Historical maximum current. |
| curr1_reset_history Write any value to reset history. |
| |
| power1_label "pin1" |
| power1_input Input power. |
| power1_reset_history Write any value to reset history. |
| |
| Power attributes are supported on ADM1075 and ADM1276 |
| only. |