> > Was PWM tested on the VT1211? Both manual and automatic modes? I > > remember we dropped it from the vt8231 driver because it didn't > > actually work for anyone. Well, manual mode works (somewhat). But it's not the 'regular' manual mode, i.e., writing a value to the pwm sysfs file doesn't do anything. It definitely looks like it's RO and just reports the current PWM value. I got manual mode working by activating the automatic mode and programming the parameters such that the PWM controller was forced into a specific state. Remember that the PWM controller has four 'speed' zones. It enter/leaves those speeds zones based on the current value of the selected input temp and the programmed boundaries. I programmed the boundaries such that the controller ended up in a specific speed zone (and it stayed there over the 'whole' temperature range) and then I could manually change the PWM setting for that particular speed zone. The current PWM value changed accordingly so I'm pretty sure it's working even though my fan is not connected to the PWM output :-) Now how do I go about documenting this? Should I provide a script to set up the paramters if someone wants to use the 'manual' PWM mode or should I put it into the driver? Actually, putting it into the driver might not be such a bad idea although it might become a nightmare to document :-) Any thoughts? ...juerg
