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1 | Kernel driver adm1275 |
2 | ===================== | |
3 | ||
4 | Supported chips: | |
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5 | * Analog Devices ADM1075 |
6 | Prefix: 'adm1075' | |
7 | Addresses scanned: - | |
8 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf | |
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9 | * Analog Devices ADM1275 |
10 | Prefix: 'adm1275' | |
11 | Addresses scanned: - | |
12 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf | |
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13 | * Analog Devices ADM1276 |
14 | Prefix: 'adm1276' | |
15 | Addresses scanned: - | |
16 | Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf | |
68a40382 GR |
17 | * Analog Devices ADM1293/ADM1294 |
18 | Prefix: 'adm1293', 'adm1294' | |
19 | Addresses scanned: - | |
20 | Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf | |
83f7649c | 21 | |
e3333e57 | 22 | Author: Guenter Roeck <linux@roeck-us.net> |
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23 | |
24 | ||
25 | Description | |
26 | ----------- | |
27 | ||
92711269 | 28 | This driver supports hardware montoring for Analog Devices ADM1075, ADM1275, |
68a40382 | 29 | ADM1276, ADM1293, and ADM1294 Hot-Swap Controller and Digital Power Monitors. |
83f7649c | 30 | |
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31 | ADM1075, ADM1275, ADM1276, ADM1293, and ADM1294 are hot-swap controllers that |
32 | allow a circuit board to be removed from or inserted into a live backplane. | |
33 | They also feature current and voltage readback via an integrated 12 | |
34 | bit analog-to-digital converter (ADC), accessed using a PMBus interface. | |
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35 | |
36 | The driver is a client driver to the core PMBus driver. Please see | |
37 | Documentation/hwmon/pmbus for details on PMBus client drivers. | |
38 | ||
39 | ||
40 | Usage Notes | |
41 | ----------- | |
42 | ||
43 | This driver does not auto-detect devices. You will have to instantiate the | |
44 | devices explicitly. Please see Documentation/i2c/instantiating-devices for | |
45 | details. | |
46 | ||
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47 | The ADM1075, unlike many other PMBus devices, does not support internal voltage |
48 | or current scaling. Reported voltages, currents, and power are raw measurements, | |
49 | and will typically have to be scaled. | |
50 | ||
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51 | |
52 | Platform data support | |
53 | --------------------- | |
54 | ||
55 | The driver supports standard PMBus driver platform data. Please see | |
56 | Documentation/hwmon/pmbus for details. | |
57 | ||
58 | ||
59 | Sysfs entries | |
60 | ------------- | |
61 | ||
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62 | The following attributes are supported. Limits are read-write, history reset |
63 | attributes are write-only, all other attributes are read-only. | |
83f7649c | 64 | |
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65 | inX_label "vin1" or "vout1" depending on chip variant and |
66 | configuration. On ADM1075, ADM1293, and ADM1294, | |
67 | vout1 reports the voltage on the VAUX pin. | |
68 | inX_input Measured voltage. | |
69 | inX_min Minimum Voltage. | |
70 | inX_max Maximum voltage. | |
71 | inX_min_alarm Voltage low alarm. | |
72 | inX_max_alarm Voltage high alarm. | |
73 | inX_highest Historical maximum voltage. | |
74 | inX_reset_history Write any value to reset history. | |
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75 | |
76 | curr1_label "iout1" | |
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77 | curr1_input Measured current. |
78 | curr1_max Maximum current. | |
79 | curr1_max_alarm Current high alarm. | |
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80 | curr1_lcrit Critical minimum current. Depending on the chip |
81 | configuration, either curr1_lcrit or curr1_crit is | |
82 | supported, but not both. | |
83 | curr1_lcrit_alarm Critical current low alarm. | |
84 | curr1_crit Critical maximum current. Depending on the chip | |
85 | configuration, either curr1_lcrit or curr1_crit is | |
86 | supported, but not both. | |
87 | curr1_crit_alarm Critical current high alarm. | |
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88 | curr1_highest Historical maximum current. |
89 | curr1_reset_history Write any value to reset history. | |
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90 | |
91 | power1_label "pin1" | |
92 | power1_input Input power. | |
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93 | power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. |
94 | power1_input_highest Highest observed input power. | |
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95 | power1_reset_history Write any value to reset history. |
96 | ||
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97 | Power attributes are supported on ADM1075, ADM1276, |
98 | ADM1293, and ADM1294. |