Alexandre d'Alton wrote:
>Quoting Jean Delvare <khali at linux-fr.org>:
>
>
>
>>>>Let's compare with the ADM030 which has:
>>>>1* a temperature over which the fan starts spinning;
>>>>2* a range of temperature after Tmin for which the fan has variable
>>>>PWM (this is another way to define Tmax);
>>>>4* a PWM value for 1*;
>>>>
>>>>
>>>Actually, the (4*) item, when in automatic mode, define the minimum
>>>speed at which the fan will rotate. Even if Temp < (1*)
>>>
>>>
>>This doesn't match the graph page 12 of the ADM1030-A datasheet. If I
>>read it correctly, PWM (4*) applies if (1*) - 5 < T < (1*).
>>
>>
>
>OK, just read back, it's clear. Sorry.
>
>
>
>>>I would just add a file to activate the automatic mode. (It is not
>>>activated by default.)
>>>
>>>
>>fan1_auto_enable?
>>
>>
>>
>>
>>>and to select on which temp channel the automatic mode
>>>reacts. (temp1, temp2, temp3 or max value of the three.)
>>>
>>>
>>I don't know if IT87 or Winbond chips can select that. I guess that
>>"fan1_auto_temp_channel" would be a correct name?
>>
>>Note that I don't have strong opinions on the names except that they
>>must be standardized and self-expressive. The more important (and
>>difficult) problem is to ensure that all known chips (and it possible
>>future ones) will fit into the chose interface.
>>
>>
>>
In the LM85/ADM1027 driver it's called pwm1_zone.
It has the values:
-1: PWM disabled, fan at 100%
-2: PWM under manual control ('pwm1' or 'pwm1_value' is writable)
1: PWM is controlled by temp1_input
2: PWM is controlled by temp2_input
123: PWM is controlled by max value of all three
0: PWM disabled, fan at 0%
The other parameters have equivalents in the lm85 driver as well.
zone#_limit (fan "turn on" temperature (1*))
zone#_hyst (range below limit fan remains on. Fixed at 5 deg in
this chip?)
zone#_range (temperature range (2*))
pwm#_min (PWM value at low limit. (4*))
:v)
