mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
ede7fbdf52
Part 3: Move the drivers documentation, plus two general documentation files. Note that the patch "adds trailing whitespace", because it does move the files as-is, and some files happen to have trailing whitespace. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
73 lines
2.0 KiB
Plaintext
73 lines
2.0 KiB
Plaintext
Kernel driver asb100
|
|
====================
|
|
|
|
Supported Chips:
|
|
* Asus ASB100 and ASB100-A "Bach"
|
|
Prefix: 'asb100'
|
|
Addresses scanned: I2C 0x2d
|
|
Datasheet: none released
|
|
|
|
Author: Mark M. Hoffman <mhoffman@lightlink.com>
|
|
|
|
Description
|
|
-----------
|
|
|
|
This driver implements support for the Asus ASB100 and ASB100-A "Bach".
|
|
These are custom ASICs available only on Asus mainboards. Asus refuses to
|
|
supply a datasheet for these chips. Thanks go to many people who helped
|
|
investigate their hardware, including:
|
|
|
|
Vitaly V. Bursov
|
|
Alexander van Kaam (author of MBM for Windows)
|
|
Bertrik Sikken
|
|
|
|
The ASB100 implements seven voltage sensors, three fan rotation speed
|
|
sensors, four temperature sensors, VID lines and alarms. In addition to
|
|
these, the ASB100-A also implements a single PWM controller for fans 2 and
|
|
3 (i.e. one setting controls both.) If you have a plain ASB100, the PWM
|
|
controller will simply not work (or maybe it will for you... it doesn't for
|
|
me).
|
|
|
|
Temperatures are measured and reported in degrees Celsius.
|
|
|
|
Fan speeds are reported in RPM (rotations per minute). An alarm is
|
|
triggered if the rotation speed has dropped below a programmable limit.
|
|
|
|
Voltage sensors (also known as IN sensors) report values in volts.
|
|
|
|
The VID lines encode the core voltage value: the voltage level your
|
|
processor should work with. This is hardcoded by the mainboard and/or
|
|
processor itself. It is a value in volts.
|
|
|
|
Alarms: (TODO question marks indicate may or may not work)
|
|
|
|
0x0001 => in0 (?)
|
|
0x0002 => in1 (?)
|
|
0x0004 => in2
|
|
0x0008 => in3
|
|
0x0010 => temp1 (1)
|
|
0x0020 => temp2
|
|
0x0040 => fan1
|
|
0x0080 => fan2
|
|
0x0100 => in4
|
|
0x0200 => in5 (?) (2)
|
|
0x0400 => in6 (?) (2)
|
|
0x0800 => fan3
|
|
0x1000 => chassis switch
|
|
0x2000 => temp3
|
|
|
|
Alarm Notes:
|
|
|
|
(1) This alarm will only trigger if the hysteresis value is 127C.
|
|
I.e. it behaves the same as w83781d.
|
|
|
|
(2) The min and max registers for these values appear to
|
|
be read-only or otherwise stuck at 0x00.
|
|
|
|
TODO:
|
|
* Experiment with fan divisors > 8.
|
|
* Experiment with temp. sensor types.
|
|
* Are there really 13 voltage inputs? Probably not...
|
|
* Cleanups, no doubt...
|
|
|