| | 1 | Kernel driver adm1275 |
| | 2 | ===================== |
| | 3 | |
| | 4 | Supported chips: |
| | 5 | * Analog Devices ADM1075 |
| | 6 | Prefix: 'adm1075' |
| | 7 | Addresses scanned: - |
| | 8 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf |
| | 9 | * Analog Devices ADM1275 |
| | 10 | Prefix: 'adm1275' |
| | 11 | Addresses scanned: - |
| | 12 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf |
| | 13 | * Analog Devices ADM1276 |
| | 14 | Prefix: 'adm1276' |
| | 15 | Addresses scanned: - |
| | 16 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf |
| | 17 | |
| | 18 | Author: Guenter Roeck <linux@roeck-us.net> |
| | 19 | |
| | 20 | |
| | 21 | Description |
| | 22 | ----------- |
| | 23 | |
| | 24 | This driver supports hardware montoring for Analog Devices ADM1075, ADM1275, |
| | 25 | and ADM1276 Hot-Swap Controller and Digital Power Monitor. |
| | 26 | |
| | 27 | ADM1075, ADM1275, and ADM1276 are hot-swap controllers that allow a circuit |
| | 28 | board to be removed from or inserted into a live backplane. They also feature |
| | 29 | current and voltage readback via an integrated 12-bit analog-to-digital |
| | 30 | converter (ADC), accessed using a PMBus interface. |
| | 31 | |
| | 32 | The driver is a client driver to the core PMBus driver. Please see |
| | 33 | Documentation/hwmon/pmbus for details on PMBus client drivers. |
| | 34 | |
| | 35 | |
| | 36 | Usage Notes |
| | 37 | ----------- |
| | 38 | |
| | 39 | This driver does not auto-detect devices. You will have to instantiate the |
| | 40 | devices explicitly. Please see Documentation/i2c/instantiating-devices for |
| | 41 | details. |
| | 42 | |
| | 43 | The ADM1075, unlike many other PMBus devices, does not support internal voltage |
| | 44 | or current scaling. Reported voltages, currents, and power are raw measurements, |
| | 45 | and will typically have to be scaled. |
| | 46 | |
| | 47 | |
| | 48 | Platform data support |
| | 49 | --------------------- |
| | 50 | |
| | 51 | The driver supports standard PMBus driver platform data. Please see |
| | 52 | Documentation/hwmon/pmbus for details. |
| | 53 | |
| | 54 | |
| | 55 | Sysfs entries |
| | 56 | ------------- |
| | 57 | |
| | 58 | The following attributes are supported. Limits are read-write, history reset |
| | 59 | attributes are write-only, all other attributes are read-only. |
| | 60 | |
| | 61 | in1_label "vin1" or "vout1" depending on chip variant and |
| | 62 | configuration. On ADM1075, vout1 reports the voltage on |
| | 63 | the VAUX pin. |
| | 64 | in1_input Measured voltage. |
| | 65 | in1_min Minimum Voltage. |
| | 66 | in1_max Maximum voltage. |
| | 67 | in1_min_alarm Voltage low alarm. |
| | 68 | in1_max_alarm Voltage high alarm. |
| | 69 | in1_highest Historical maximum voltage. |
| | 70 | in1_reset_history Write any value to reset history. |
| | 71 | |
| | 72 | curr1_label "iout1" |
| | 73 | curr1_input Measured current. |
| | 74 | curr1_max Maximum current. |
| | 75 | curr1_max_alarm Current high alarm. |
| | 76 | curr1_lcrit Critical minimum current. Depending on the chip |
| | 77 | configuration, either curr1_lcrit or curr1_crit is |
| | 78 | supported, but not both. |
| | 79 | curr1_lcrit_alarm Critical current low alarm. |
| | 80 | curr1_crit Critical maximum current. Depending on the chip |
| | 81 | configuration, either curr1_lcrit or curr1_crit is |
| | 82 | supported, but not both. |
| | 83 | curr1_crit_alarm Critical current high alarm. |
| | 84 | curr1_highest Historical maximum current. |
| | 85 | curr1_reset_history Write any value to reset history. |
| | 86 | |
| | 87 | power1_label "pin1" |
| | 88 | power1_input Input power. |
| | 89 | power1_reset_history Write any value to reset history. |
| | 90 | |
| | 91 | Power attributes are supported on ADM1075 and ADM1276 |
| | 92 | only. |
projects / linux-2.6-block.git / blame_incremental