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active cooling, amount of trippoints, specification

ACPI-sppt Sebastian Henschel 1 participant 1 message Feb 11, 2004 2 messages not in the archive ACPI

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Sebastian Henschel

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hello thomas..

Quoted 8 lines · Thomas Renninger

please correct me if I am wrong:

At least the /proc interface only allows to modify two active cooling trippoints.
e.g. echo critical:hot:passive:active1:active2

Quoted 1 line

/proc/acpi/thermal_zone/*/trip_points

Quoted 8 lines

The ACPI specification (2.0b) specifies up to ten different trippoints for active cooling(p.284).

Is everything inside the kernel designed for only supporting two active cooling trippoints?
Is it going to change(specially the /proc/.../trip_points interface) to control the amount of active cooling
devices as mentioned in the specs?

coincidently, i had a brief discussion with pavel machek about this last week and he told me:

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Quoted 3 lines

did you also take into account that there may be more than 2 active levels? according to the spec, there should be 10 possible levels (12.3.1). is that implemented?

No, it is not implemented. I've seen machines with active[1], but not ones with more active zones.

Feel free to do that... Code should really accept 4-13 parameters...

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bye,
sebastian

p.s.: diverted from acpi-support to acpi-devel intentionally.

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