Hi folks ! I'm writing some support for d-link dns323 rev C1 NAS. It has a fan that is controlled by some non-programmable PWM circuit. Basically, all I can do is tweak to GPIOs that controls the feed into the circuitry for the fans to be off, slow or fast. I don't know what the actual PWM values are for "slow" or "fast". I -might- be able to do some measurements but I can't promise it. Now I'm trying to do a simple hwmon driver for that in order to easy userspace support for these guys, and I don't really see a 'nice' way to expose that which would fit the interfaces documented Documentation/hwmon/sysfs-interface. So before I do something horrible, I felt I might poke you guys see if you have a good idea here :-) Before I read the above document I was thinking about a sysfs file that contains "off", "slow" or "fast" but it looks like this won't fit at all the typical hwmon APIs. Another comment while at it is when implementing the thermal control for PowerMacs a while back (windfarm etc...) I had to deal with two different type of interfaces to fans. RPM controlled and PWM controlled. The later basically let me program a percentile value (a percent of the duty cycle). I looks like the described sysfs interface only does RPM, or at least doesn't provide a way to expose the units used... Cheers, Ben. _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
