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 ADM1272 10 Prefix: 'adm1272' 11 Addresses scanned: - 12 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1272.pdf 13 * Analog Devices ADM1275 14 Prefix: 'adm1275' 15 Addresses scanned: - 16 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf 17 * Analog Devices ADM1276 18 Prefix: 'adm1276' 19 Addresses scanned: - 20 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf 21 * Analog Devices ADM1278 22 Prefix: 'adm1278' 23 Addresses scanned: - 24 Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1278.pdf 25 * Analog Devices ADM1293/ADM1294 26 Prefix: 'adm1293', 'adm1294' 27 Addresses scanned: - 28 Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf 29 30Author: Guenter Roeck <linux@roeck-us.net> 31 32 33Description 34----------- 35 36This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272, 37ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and 38Digital Power Monitors. 39 40ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap 41controllers that allow a circuit board to be removed from or inserted into 42a live backplane. They also feature current and voltage readback via an 43integrated 12 bit analog-to-digital converter (ADC), accessed using a 44PMBus interface. 45 46The driver is a client driver to the core PMBus driver. Please see 47Documentation/hwmon/pmbus for details on PMBus client drivers. 48 49 50Usage Notes 51----------- 52 53This driver does not auto-detect devices. You will have to instantiate the 54devices explicitly. Please see Documentation/i2c/instantiating-devices for 55details. 56 57The ADM1075, unlike many other PMBus devices, does not support internal voltage 58or current scaling. Reported voltages, currents, and power are raw measurements, 59and will typically have to be scaled. 60 61 62Platform data support 63--------------------- 64 65The driver supports standard PMBus driver platform data. Please see 66Documentation/hwmon/pmbus for details. 67 68 69Sysfs entries 70------------- 71 72The following attributes are supported. Limits are read-write, history reset 73attributes are write-only, all other attributes are read-only. 74 75inX_label "vin1" or "vout1" depending on chip variant and 76 configuration. On ADM1075, ADM1293, and ADM1294, 77 vout1 reports the voltage on the VAUX pin. 78inX_input Measured voltage. 79inX_min Minimum Voltage. 80inX_max Maximum voltage. 81inX_min_alarm Voltage low alarm. 82inX_max_alarm Voltage high alarm. 83inX_highest Historical maximum voltage. 84inX_reset_history Write any value to reset history. 85 86curr1_label "iout1" 87curr1_input Measured current. 88curr1_max Maximum current. 89curr1_max_alarm Current high alarm. 90curr1_lcrit Critical minimum current. Depending on the chip 91 configuration, either curr1_lcrit or curr1_crit is 92 supported, but not both. 93curr1_lcrit_alarm Critical current low alarm. 94curr1_crit Critical maximum current. Depending on the chip 95 configuration, either curr1_lcrit or curr1_crit is 96 supported, but not both. 97curr1_crit_alarm Critical current high alarm. 98curr1_highest Historical maximum current. 99curr1_reset_history Write any value to reset history. 100 101power1_label "pin1" 102power1_input Input power. 103power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only. 104power1_input_highest Highest observed input power. 105power1_reset_history Write any value to reset history. 106 107 Power attributes are supported on ADM1075, ADM1272, 108 ADM1276, ADM1293, and ADM1294. 109 110temp1_input Chip temperature. 111temp1_max Maximum chip temperature. 112temp1_max_alarm Temperature alarm. 113temp1_crit Critical chip temperature. 114temp1_crit_alarm Critical temperature high alarm. 115temp1_highest Highest observed temperature. 116temp1_reset_history Write any value to reset history. 117 118 Temperature attributes are supported on ADM1272 and 119 ADM1278. 120