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Commit | Line | Data |
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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 | * Analog Devices ADM1278 | |
18 | Prefix: 'adm1278' | |
19 | Addresses scanned: - | |
20 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1278.pdf | |
21 | * Analog Devices ADM1293/ADM1294 | |
22 | Prefix: 'adm1293', 'adm1294' | |
23 | Addresses scanned: - | |
24 | Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf | |
25 | ||
26 | Author: Guenter Roeck <linux@roeck-us.net> | |
27 | ||
28 | ||
29 | Description | |
30 | ----------- | |
31 | ||
32 | This driver supports hardware monitoring for Analog Devices ADM1075, ADM1275, | |
33 | ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and Digital | |
34 | Power Monitors. | |
35 | ||
36 | ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap | |
37 | controllers that allow a circuit board to be removed from or inserted into | |
38 | a live backplane. They also feature current and voltage readback via an | |
39 | integrated 12 bit analog-to-digital converter (ADC), accessed using a | |
40 | PMBus interface. | |
41 | ||
42 | The driver is a client driver to the core PMBus driver. Please see | |
43 | Documentation/hwmon/pmbus for details on PMBus client drivers. | |
44 | ||
45 | ||
46 | Usage Notes | |
47 | ----------- | |
48 | ||
49 | This driver does not auto-detect devices. You will have to instantiate the | |
50 | devices explicitly. Please see Documentation/i2c/instantiating-devices for | |
51 | details. | |
52 | ||
53 | The ADM1075, unlike many other PMBus devices, does not support internal voltage | |
54 | or current scaling. Reported voltages, currents, and power are raw measurements, | |
55 | and will typically have to be scaled. | |
56 | ||
57 | ||
58 | Platform data support | |
59 | --------------------- | |
60 | ||
61 | The driver supports standard PMBus driver platform data. Please see | |
62 | Documentation/hwmon/pmbus for details. | |
63 | ||
64 | ||
65 | Sysfs entries | |
66 | ------------- | |
67 | ||
68 | The following attributes are supported. Limits are read-write, history reset | |
69 | attributes are write-only, all other attributes are read-only. | |
70 | ||
71 | inX_label "vin1" or "vout1" depending on chip variant and | |
72 | configuration. On ADM1075, ADM1293, and ADM1294, | |
73 | vout1 reports the voltage on the VAUX pin. | |
74 | inX_input Measured voltage. | |
75 | inX_min Minimum Voltage. | |
76 | inX_max Maximum voltage. | |
77 | inX_min_alarm Voltage low alarm. | |
78 | inX_max_alarm Voltage high alarm. | |
79 | inX_highest Historical maximum voltage. | |
80 | inX_reset_history Write any value to reset history. | |
81 | ||
82 | curr1_label "iout1" | |
83 | curr1_input Measured current. | |
84 | curr1_max Maximum current. | |
85 | curr1_max_alarm Current high alarm. | |
86 | curr1_lcrit Critical minimum current. Depending on the chip | |
87 | configuration, either curr1_lcrit or curr1_crit is | |
88 | supported, but not both. | |
89 | curr1_lcrit_alarm Critical current low alarm. | |
90 | curr1_crit Critical maximum current. Depending on the chip | |
91 | configuration, either curr1_lcrit or curr1_crit is | |
92 | supported, but not both. | |
93 | curr1_crit_alarm Critical current high alarm. | |
94 | curr1_highest Historical maximum current. | |
95 | curr1_reset_history Write any value to reset history. | |
96 | ||
97 | power1_label "pin1" | |
98 | power1_input Input power. | |
99 | power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. | |
100 | power1_input_highest Highest observed input power. | |
101 | power1_reset_history Write any value to reset history. | |
102 | ||
103 | Power attributes are supported on ADM1075, ADM1276, | |
104 | ADM1293, and ADM1294. | |
105 | ||
106 | temp1_input Chip temperature. | |
107 | Temperature attributes are only available on ADM1278. | |
108 | temp1_max Maximum chip temperature. | |
109 | temp1_max_alarm Temperature alarm. | |
110 | temp1_crit Critical chip temperature. | |
111 | temp1_crit_alarm Critical temperature high alarm. | |
112 | temp1_highest Highest observed temperature. | |
113 | temp1_reset_history Write any value to reset history. | |
114 | ||
115 | Temperature attributes are supported on ADM1278. |