| Guenter Roeck | 83f7649 | 2011-03-17 13:16:01 -0700 | [diff] [blame] | 1 | Kernel driver adm1275 |
| 2 | ===================== |
| 3 | |
| 4 | Supported chips: |
| 5 | * Analog Devices ADM1275 |
| 6 | Prefix: 'adm1275' |
| 7 | Addresses scanned: - |
| 8 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf |
| 9 | |
| 10 | Author: Guenter Roeck <guenter.roeck@ericsson.com> |
| 11 | |
| 12 | |
| 13 | Description |
| 14 | ----------- |
| 15 | |
| 16 | This driver supports hardware montoring for Analog Devices ADM1275 Hot-Swap |
| 17 | Controller and Digital Power Monitor. |
| 18 | |
| 19 | The ADM1275 is a hot-swap controller that allows a circuit board to be removed |
| 20 | from or inserted into a live backplane. It also features current and voltage |
| 21 | readback via an integrated 12-bit analog-to-digital converter (ADC), accessed |
| 22 | using a PMBus. interface. |
| 23 | |
| 24 | The driver is a client driver to the core PMBus driver. Please see |
| 25 | Documentation/hwmon/pmbus for details on PMBus client drivers. |
| 26 | |
| 27 | |
| 28 | Usage Notes |
| 29 | ----------- |
| 30 | |
| 31 | This driver does not auto-detect devices. You will have to instantiate the |
| 32 | devices explicitly. Please see Documentation/i2c/instantiating-devices for |
| 33 | details. |
| 34 | |
| 35 | |
| 36 | Platform data support |
| 37 | --------------------- |
| 38 | |
| 39 | The driver supports standard PMBus driver platform data. Please see |
| 40 | Documentation/hwmon/pmbus for details. |
| 41 | |
| 42 | |
| 43 | Sysfs entries |
| 44 | ------------- |
| 45 | |
| 46 | The following attributes are supported. Limits are read-write; all other |
| 47 | attributes are read-only. |
| 48 | |
| 49 | in1_label "vin1" or "vout1" depending on chip variant and |
| 50 | configuration. |
| 51 | in1_input Measured voltage. From READ_VOUT register. |
| 52 | in1_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register. |
| 53 | in1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register. |
| 54 | in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status. |
| 55 | in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status. |
| 56 | |
| 57 | curr1_label "iout1" |
| 58 | curr1_input Measured current. From READ_IOUT register. |
| 59 | curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. |
| 60 | curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. |