[LinuxBIOS] s2881 fan control

[Ward Vandewege]

On Thu, Apr 20, 2006 at 04:59:52PM -0700, Lu, Yinghai wrote:
> I have inited the hw sensors in LinuxBIOS for s2881. So you could use
> lmsensor to check the FAN speed. The config file is on Tyan web.
> 
> For the Fan control, there should more some reg setting...to reduce the
> FAN speed winbond and adm1027...

An update on this.

As I reported earlier, setting fan speed works fine from LinuxBIOS. But it
seems this is only the case until I unplug the power from the machine.

When the machine is newly powered in, I need to boot up the proprietary bios
first to be able to _set_ the fan speed. 

Once I've done that, I can reboot into LinuxBIOS, and set the speed just fine
using 

  /sys/bus/i2c/drivers/lm85/0-002d/pwm1

for instance like this:

  echo '60' > /sys/bus/i2c/drivers/lm85/0-002d/pwm1

See attached set_fan_speed_ok.txt for a typical output.

I can shut the machine down, do a cold boot into LinuxBIOS, and it still
works.

Until I unplug the power to the machine, that is.
  
After that, I can still read out everything (see attached
set_fan_speed_bad.txt) correctly, but now also _set_ the fan speed.

Suggestions?

Thanks,
Ward.

-- 
Ward Vandewege <ward at fsf.org>
Free Software Foundation - Senior System Administrator
-------------- next part --------------
root at chimera:~# /usr/bin/sensors
adt7463-i2c-0-2d
Adapter: SMBus AMD8111 adapter at 20e0
DDR 2.5V:  +2.653 V  (min =  +2.53 V, max =  +2.79 V)
DDR VTT:   +1.333 V  (min =  +1.23 V, max =  +1.36 V)
3VSB:      +3.317 V  (min =  +3.13 V, max =  +3.47 V)
+5 V:     +5.111 V  (min =  +4.74 V, max =  +5.26 V)
+12V:     +12.016 V  (min = +10.81 V, max = +13.19 V)
CPU0 Fan: 17307 RPM  (min =    0 RPM)
CPU1 Fan: 17419 RPM  (min =    0 RPM)
Fan9:     17307 RPM  (min =    0 RPM)
CPU1 Temp:+47.25?C  (low  =  -127?C, high =  +127?C)
CPU0 Temp:+49.50?C  (low  =  -127?C, high =  +127?C)
pwm1:      255
pwm2:      255
pwm3:      255
vid:      +1.350 V  (VRM Version 2.4)

w83627hf-isa-0290
Adapter: ISA adapter
CPU0 Volt: +1.41 V  (min =  +1.28 V, max =  +1.42 V)
CPU1 Volt: +1.41 V  (min =  +1.28 V, max =  +1.42 V)
3.3V:      +3.46 V  (min =  +3.14 V, max =  +3.47 V)
DDR VREF:  +1.33 V  (min =  +1.23 V, max =  +1.36 V)
DDR VCORE: +2.67 V  (min =  +2.38 V, max =  +2.93 V)
HT CORE:   +1.34 V  (min =  +1.26 V, max =  +1.39 V)
CPU0 Fan: 17307 RPM  (min = 2657 RPM, div = 2)
CPU1 Fan: 18243 RPM  (min = 2657 RPM, div = 2)
Fan8:     15697 RPM  (min = 2657 RPM, div = 2)
vid:      +1.350 V  (VRM Version 2.4)
alarms:
beep_enable:
          Sound alarm disabled

eeprom-i2c-0-54
Adapter: SMBus AMD8111 adapter at 20e0
Memory type:            DDR SDRAM DIMM
Memory size (MB):       1024

eeprom-i2c-0-50
Adapter: SMBus AMD8111 adapter at 20e0
Memory type:            DDR SDRAM DIMM
Memory size (MB):       1024

-------------- next part --------------
root at chimera:~# /usr/bin/sensors
adt7463-i2c-0-2d
Adapter: SMBus AMD8111 adapter at 10e0
DDR 2.5V:  +2.646 V  (min =  +2.53 V, max =  +2.80 V)
DDR VTT:   +1.324 V  (min =  +1.23 V, max =  +1.36 V)
3VSB:      +3.321 V  (min =  +3.13 V, max =  +3.47 V)
+5 V:     +5.104 V  (min =  +4.74 V, max =  +5.26 V)
+12V:     +12.063 V  (min = +10.81 V, max = +13.19 V)
CPU0 Fan: 11273 RPM  (min =    0 RPM)
CPU1 Fan: 11464 RPM  (min =    0 RPM)
Fan9:     11320 RPM  (min =    0 RPM)
CPU1 Temp:+48.25?C  (low  =  -127?C, high =  +127?C)
CPU0 Temp:+49.00?C  (low  =  -127?C, high =  +127?C)
pwm1:       60
pwm2:       60
pwm3:       60
vid:      +1.350 V  (VRM Version 2.4)

w83627hf-isa-0290
Adapter: ISA adapter
CPU0 Volt: +1.41 V  (min =  +1.28 V, max =  +1.42 V)
CPU1 Volt: +1.41 V  (min =  +1.28 V, max =  +1.42 V)
3.3V:      +3.46 V  (min =  +3.14 V, max =  +3.47 V)
DDR VREF:  +1.34 V  (min =  +1.23 V, max =  +1.36 V)
DDR VCORE: +2.66 V  (min =  +2.42 V, max =  +2.96 V)
HT CORE:   +1.33 V  (min =  +1.26 V, max =  +1.39 V)
CPU0 Fan: 11250 RPM  (min = 2657 RPM, div = 2)
CPU1 Fan: 11842 RPM  (min = 2657 RPM, div = 2)
Fan8:     10546 RPM  (min = 2657 RPM, div = 2)
vid:      +1.350 V  (VRM Version 2.4)
alarms:
beep_enable:
          Sound alarm disabled

eeprom-i2c-0-54
Adapter: SMBus AMD8111 adapter at 10e0
Memory type:            DDR SDRAM DIMM
Memory size (MB):       1024