| 1 | Kernel driver `asb100.o' |
|---|
| 2 | ======================== |
|---|
| 3 | |
|---|
| 4 | Status: Work in progress |
|---|
| 5 | |
|---|
| 6 | Supported Chips: |
|---|
| 7 | * Asus ASB100 and ASB100-A "Bach" |
|---|
| 8 | Addresses scanned: I2C 0x28-0x2f (inclusive) ISA (none) |
|---|
| 9 | Datasheet: none released |
|---|
| 10 | |
|---|
| 11 | Author: Mark M. Hoffman <mhoffman@lightlink.com> |
|---|
| 12 | |
|---|
| 13 | Module Parameters |
|---|
| 14 | ----------------- |
|---|
| 15 | |
|---|
| 16 | <TODO: fill in here> |
|---|
| 17 | |
|---|
| 18 | Description |
|---|
| 19 | ----------- |
|---|
| 20 | |
|---|
| 21 | This driver implements support for the Asus ASB100 and ASB100-A "Bach". These |
|---|
| 22 | are custom ASICs available only on Asus mainboards. Asus refuses to supply a |
|---|
| 23 | datasheet for these chips. Thanks go to many people who helped investigate |
|---|
| 24 | their hardware, including: |
|---|
| 25 | |
|---|
| 26 | Vitaly V. Bursov |
|---|
| 27 | Alexander van Kaam (author of MBM for Windows) |
|---|
| 28 | Bertrik Sikken |
|---|
| 29 | |
|---|
| 30 | The ASB100 implements seven voltage sensors, three fan rotation speed sensors, |
|---|
| 31 | four temperature sensors, VID lines and alarms. In addition to these, the |
|---|
| 32 | ASB100-A also implements a single PWM controller for fans 2 and 3 (i.e. one |
|---|
| 33 | setting controls both.) If you have a plain ASB100, the pwm controller will |
|---|
| 34 | simply not work (or maybe it will for you... it doesn't for me). |
|---|
| 35 | |
|---|
| 36 | Temperatures are measured and reported in degrees Celcius. |
|---|
| 37 | |
|---|
| 38 | Fan speeds are reported in RPM (rotations per minute). An alarm is triggered |
|---|
| 39 | if the rotation speed has dropped below a programmable limit. |
|---|
| 40 | |
|---|
| 41 | Voltage sensors (also known as IN sensors) report values in volts. |
|---|
| 42 | |
|---|
| 43 | The VID lines encode the core voltage value: the voltage level your processor |
|---|
| 44 | should work with. This is hardcoded by the mainboard and/or processor itself. |
|---|
| 45 | It is a value in volts. |
|---|
| 46 | |
|---|
| 47 | Alarms: (TODO question marks indicate may or may not work) |
|---|
| 48 | |
|---|
| 49 | 0x0001 => in0 (?) |
|---|
| 50 | 0x0002 => in1 (?) |
|---|
| 51 | 0x0004 => in2 |
|---|
| 52 | 0x0008 => in3 |
|---|
| 53 | 0x0010 => temp1 (1) |
|---|
| 54 | 0x0020 => temp2 |
|---|
| 55 | 0x0040 => fan1 |
|---|
| 56 | 0x0080 => fan2 |
|---|
| 57 | 0x0100 => in4 |
|---|
| 58 | 0x0200 => in5 (?) (2) |
|---|
| 59 | 0x0400 => in6 (?) (2) |
|---|
| 60 | 0x0800 => fan3 |
|---|
| 61 | 0x1000 => chassis switch |
|---|
| 62 | 0x2000 => temp3 |
|---|
| 63 | |
|---|
| 64 | Alarm Notes: |
|---|
| 65 | |
|---|
| 66 | (1) This alarm will only trigger if the hysteresis value is 127C. |
|---|
| 67 | I.e. it behaves the same as w83781d. |
|---|
| 68 | |
|---|
| 69 | (2) The min and max registers for these values appear to |
|---|
| 70 | be read-only or otherwise stuck at 0x00. |
|---|
| 71 | |
|---|
| 72 | TODO: |
|---|
| 73 | * Experiment with fan divisors > 8. |
|---|
| 74 | * Experiment with temp. sensor types. |
|---|
| 75 | * Are there really 13 voltage inputs? Probably not... |
|---|
| 76 | * Fix bogus client deregistration (like w83781d in 2.6). |
|---|
| 77 | * Fix fan divisor / fan minimum interaction (like lm78). |
|---|
| 78 | * Cleanups, no doubt... |
|---|
| 79 | |
|---|
