Hello Torsten, On 11/11/06, slompf <2crazy4you at gmx.de> wrote: > Hallo, > > I'm trying to reduce the speed of a cpu fan on a k8n-vm. The chip is for > controlling the temp is a winbond w83627ehf. My kernel is 2.6.18.2. > lm-sensors seems to work correctly, because on the 'sensors' command I'm > getting the following output: > > w83627ehf-isa-0290 > Adapter: ISA adapter > Case Fan: 888 RPM (min = 1205 RPM, div = 8) > CPU Fan: 2109 RPM (min = 1704 RPM, div = 8) > fan3: 0 RPM (min = 45 RPM, div = 128) > fan4: 0 RPM (min = 10546 RPM, div = 128) > Sys Temp: +28?C (high = +45?C, hyst = +40?C) > CPU Temp: +23.0?C (high = +45.0?C, hyst = +40.0?C) > temp3: +25.0?C (high = +80.0?C, hyst = +75.0?C) > > Now the first question: I thought support for the voltage inputs was > added at one of the last kernels. Is that correct? Yes, that is correct. > Now the PROBLEM: After calling pwmconfig (which seems to be the tool for > configuring fancontrol) I'm getting this output: > > /usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed > > After checking this script, it became clear that it needs something > called pwm.. or fan.._pwm in the /sys/bus/i2c/devices/9191-0290 > directory. ls does only show that: > > bus fan2_div fan4_alarm in0_max in2_input in4_alarm > in5_min in7_max in9_input temp1_input temp3_alarm > driver fan2_input fan4_div in0_min in2_max in4_input > in6_alarm in7_min in9_max temp1_max temp3_input > fan1_alarm fan2_min fan4_input in1_alarm in2_min in4_max > in6_input in8_alarm in9_min temp1_max_hyst temp3_max > fan1_div fan3_alarm fan4_min in1_input in3_alarm in4_min > in6_max in8_input name temp2_alarm temp3_max_hyst > fan1_input fan3_div hwmon:hwmon0 in1_max in3_input in5_alarm > in6_min in8_max power temp2_input uevent > fan1_min fan3_input in0_alarm in1_min in3_max in5_input > in7_alarm in8_min subsystem temp2_max > fan2_alarm fan3_min in0_input in2_alarm in3_min in5_max > in7_input in9_alarm temp1_alarm temp2_max_hyst > > Next question: where are my pwm entries? The in_... where printed first, > after I compiled the new kernel. (2.6.17->2.6.18) Is the pwm function > not supported for this chipset in the above mentioned kernel? You need a newer kernel. The fan control support is available in the -mm branch (which is for testing, before being integrated into the mainline kernel). I looked at http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.18.tar.bz2 and it has an older version of drivers/hwmon/w83627ehf.c which does not include pwm/fan control support. It would be great if you could upgrade to a testing kernel and report your success / failure with the new driver. Does this help? > Maybe you guys can give some general information about the status of the > chipset. Whats supported by which kernel and what is planned and what is > not. That would be quiet helpful. Maybe there is a document more > detailed than that: http://www.lm-sensors.org/wiki/Devices? >From the wiki: "Fan control support is available in -mm." I'm probably the person you should contact to get work done on the w83627ehf driver. I've had a backlog of schoolwork recently, but I am looking at getting the w83627dhg support into the w83627ehf driver in the next two weeks. When I submit that patch, it will go into the latest -mm kernel. Thank you for writing, David
