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https://github.com/lm-sensors/lm-sensors.git
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Mark M. Hoffman
701ad1fbdd
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2217 7894878c-1315-0410-8ee3-d5d059ff63e0
89 lines
2.5 KiB
Plaintext
89 lines
2.5 KiB
Plaintext
Kernel driver `asb100.o'
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========================
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Status: Work in progress
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Supported Chips:
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* Asus ASB100 and ASB100-A "Bach"
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Addresses scanned: I2C 0x28-0x2f (inclusive) ISA (none)
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Datasheet: none released
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Author: Mark M. Hoffman <mhoffman@lightlink.com>
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Module Parameters
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-----------------
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<TODO: fill in here>
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Asus' BIOS is often broken
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--------------------------
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If you have an Asus P4PE, you need to read prog/hotplug/README.p4b.
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If you have any other (Asus) board for which sensors-detect finds neither
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asb100 nor an I2C bus, please read prog/hotplug/README.p4b before sending
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a bug report.
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Description
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-----------
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This driver implements support for the Asus ASB100 and ASB100-A "Bach". These
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are custom ASICs available only on Asus mainboards. Asus refuses to supply a
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datasheet for these chips. Thanks go to many people who helped investigate
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their hardware, including:
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Vitaly V. Bursov
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Alexander van Kaam (author of MBM for Windows)
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Bertrik Sikken
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The ASB100 implements seven voltage sensors, three fan rotation speed sensors,
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four temperature sensors, VID lines and alarms. In addition to these, the
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ASB100-A also implements a single PWM controller for fans 2 and 3 (i.e. one
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setting controls both.) If you have a plain ASB100, the pwm controller will
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simply not work (or maybe it will for you... it doesn't for me).
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Temperatures are measured and reported in degrees Celcius.
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Fan speeds are reported in RPM (rotations per minute). An alarm is triggered
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if the rotation speed has dropped below a programmable limit.
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Voltage sensors (also known as IN sensors) report values in volts.
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The VID lines encode the core voltage value: the voltage level your processor
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should work with. This is hardcoded by the mainboard and/or processor itself.
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It is a value in volts.
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Alarms: (TODO question marks indicate may or may not work)
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0x0001 => in0 (?)
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0x0002 => in1 (?)
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0x0004 => in2
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0x0008 => in3
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0x0010 => temp1 (1)
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0x0020 => temp2
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0x0040 => fan1
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0x0080 => fan2
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0x0100 => in4
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0x0200 => in5 (?) (2)
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0x0400 => in6 (?) (2)
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0x0800 => fan3
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0x1000 => chassis switch
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0x2000 => temp3
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Alarm Notes:
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(1) This alarm will only trigger if the hysteresis value is 127C.
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I.e. it behaves the same as w83781d.
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(2) The min and max registers for these values appear to
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be read-only or otherwise stuck at 0x00.
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TODO:
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* Experiment with fan divisors > 8.
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* Experiment with temp. sensor types.
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* Are there really 13 voltage inputs? Probably not...
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* Fix bogus client deregistration (like w83781d in 2.6).
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* Fix fan divisor / fan minimum interaction (like lm78).
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* Cleanups, no doubt...
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