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Kernel driver adt7411
=====================
Supported chips:
* Analog Devices ADT7411
Prefix: 'adt7411'
Addresses scanned: 0x48, 0x4a, 0x4b
Datasheet: Publicly available at the Analog Devices website
Author: Wolfram Sang (based on adt7470 by Darrick J. Wong)
Description
-----------
This driver implements support for the Analog Devices ADT7411 chip. There may
be other chips that implement this interface.
The ADT7411 can use an I2C/SMBus compatible 2-wire interface or an
SPI-compatible 4-wire interface. It provides a 10-bit analog to digital
converter which measures 1 temperature, vdd and 8 input voltages. It has an
internal temperature sensor, but an external one can also be connected (one
loses 2 inputs then). There are high- and low-limit registers for all inputs.
Check the datasheet for details.
sysfs-Interface
---------------
================ =================================
in0_input vdd voltage input
in0_min vdd low limit
in0_max vdd high limit
in0_alarm vdd alarm
in[1-8]_input analog 1-8 input
in[1-8]_min analog input low limit
in[1-8]_max analog input high limit
in[1-8]_alarm analog input alarm
temp1_input internal temperature input
temp1_min internal temperature low limit
temp1_max internal temperature high limit
temp1_min_alarm internal temperature low alarm
temp1_max_alarm internal temperature high alarm
================ =================================
If the external temperature sensor is enabled, the following attributes are
also available:
================ ================================================
temp2_input external temperature input
temp2_min external temperature low limit
temp2_max external temperature high limit
temp2_min_alarm external temperature low alarm
temp2_max_alarm external temperature high alarm
temp2_fault external temperature sensor fault
================ ================================================
If the external temperature sensor is enabled, analog inputs in1 and in2 are
not available.
Besides standard interfaces, this driver adds (0 = off, 1 = on):
============== =======================================================
adc_ref_vdd Use vdd as reference instead of 2.25 V
fast_sampling Sample at 22.5 kHz instead of 1.4 kHz, but drop filters
no_average Turn off averaging over 16 samples
============== =======================================================
Notes
-----
SPI is not supported yet.
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