1Kernel driver adm1275 2===================== 3 4Supported 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 26Author: Guenter Roeck <linux@roeck-us.net> 27 28 29Description 30----------- 31 32This driver supports hardware monitoring for Analog Devices ADM1075, ADM1275, 33ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and Digital 34Power Monitors. 35 36ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap 37controllers that allow a circuit board to be removed from or inserted into 38a live backplane. They also feature current and voltage readback via an 39integrated 12 bit analog-to-digital converter (ADC), accessed using a 40PMBus interface. 41 42The driver is a client driver to the core PMBus driver. Please see 43Documentation/hwmon/pmbus for details on PMBus client drivers. 44 45 46Usage Notes 47----------- 48 49This driver does not auto-detect devices. You will have to instantiate the 50devices explicitly. Please see Documentation/i2c/instantiating-devices for 51details. 52 53The ADM1075, unlike many other PMBus devices, does not support internal voltage 54or current scaling. Reported voltages, currents, and power are raw measurements, 55and will typically have to be scaled. 56 57 58Platform data support 59--------------------- 60 61The driver supports standard PMBus driver platform data. Please see 62Documentation/hwmon/pmbus for details. 63 64 65Sysfs entries 66------------- 67 68The following attributes are supported. Limits are read-write, history reset 69attributes are write-only, all other attributes are read-only. 70 71inX_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. 74inX_input Measured voltage. 75inX_min Minimum Voltage. 76inX_max Maximum voltage. 77inX_min_alarm Voltage low alarm. 78inX_max_alarm Voltage high alarm. 79inX_highest Historical maximum voltage. 80inX_reset_history Write any value to reset history. 81 82curr1_label "iout1" 83curr1_input Measured current. 84curr1_max Maximum current. 85curr1_max_alarm Current high alarm. 86curr1_lcrit Critical minimum current. Depending on the chip 87 configuration, either curr1_lcrit or curr1_crit is 88 supported, but not both. 89curr1_lcrit_alarm Critical current low alarm. 90curr1_crit Critical maximum current. Depending on the chip 91 configuration, either curr1_lcrit or curr1_crit is 92 supported, but not both. 93curr1_crit_alarm Critical current high alarm. 94curr1_highest Historical maximum current. 95curr1_reset_history Write any value to reset history. 96 97power1_label "pin1" 98power1_input Input power. 99power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. 100power1_input_highest Highest observed input power. 101power1_reset_history Write any value to reset history. 102 103 Power attributes are supported on ADM1075, ADM1276, 104 ADM1293, and ADM1294. 105 106temp1_input Chip temperature. 107 Temperature attributes are only available on ADM1278. 108temp1_max Maximum chip temperature. 109temp1_max_alarm Temperature alarm. 110temp1_crit Critical chip temperature. 111temp1_crit_alarm Critical temperature high alarm. 112temp1_highest Highest observed temperature. 113temp1_reset_history Write any value to reset history. 114 115 Temperature attributes are supported on ADM1278. 116