Re: Fan control for my Dell SmartPC

[roychris <roychris-GANU6spQydw@public.gmane.org>]

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I have a complement :

"it seems like the fan stuff is on the SMBus which is at address 7A. The 
speed can be read from register 11 and written to register 10."
I don't know how to use this information.

Adachi, Kenichi wrote:

>Hi, 
>
>  
>
>>There isn't any method to control the Fan in the dsdt ACPI 
>>table on my 
>>computer (DELL SmartPC/SmartStep).
>>Thanks to the ACPI Specs, I have implemented this code and 
>>there is no 
>>problem with the compilation. ACPI Linux driver indicates me that it 
>>finds a method for my two logical fans (one fan with 2 speeds). But I 
>>think that the adress (the namespace maybe EC0) is not good 
>>so I can't 
>>control it. How can I find the good region for my fan ?
>>    
>>
>
>Can you be more specific here:
>
>- What was the original status/problem? (There was nothing w.r.t. Fan
>control at all in your original DSDT, but your machine has been kept
>chilled by Fan, correct?)
>- What steps did you go through? (Trying to control Fan via ACPI by
>adding your own methods without knowledge as to how your Embedded
>Controller interacts with Fan controller etc.?)
>
>The entire DSDT, both original and modified, will be required for
>further investigation, but honestly speaking, there's little, if any,
>hope of success...
>
>Thanks,
>- Adachi, Kenichi 
>
>
>
>
>
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