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Commit | Line | Data |
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83f7649c GR |
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 | ||
c576e30c GR |
46 | The following attributes are supported. Limits are read-write, history reset |
47 | attributes are write-only, all other attributes are read-only. | |
83f7649c GR |
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. | |
c576e30c GR |
56 | in1_highest Historical maximum voltage. |
57 | in1_reset_history Write any value to reset history. | |
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58 | |
59 | curr1_label "iout1" | |
60 | curr1_input Measured current. From READ_IOUT register. | |
61 | curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register. | |
62 | curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register. | |
c5e67636 GR |
63 | curr1_lcrit Critical minimum current. Depending on the chip |
64 | configuration, either curr1_lcrit or curr1_crit is | |
65 | supported, but not both. | |
66 | curr1_lcrit_alarm Critical current low alarm. | |
67 | curr1_crit Critical maximum current. Depending on the chip | |
68 | configuration, either curr1_lcrit or curr1_crit is | |
69 | supported, but not both. | |
70 | curr1_crit_alarm Critical current high alarm. | |
c576e30c GR |
71 | curr1_highest Historical maximum current. |
72 | curr1_reset_history Write any value to reset history. |