Power management for individual devices

Power management for individual devices

[Jayanthi Annadurai]

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Hello,

We are doing development on a MIPS based chip with linux 2.6.24 kernel.
We want to suspend a device when it is not used. The attribute
/sys/devices/platform/../power/state has been removed. What is the
replacement of this?
What is the user interface to do the same?

Thanks in advance
Jayanti

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Re: Power management for individual devices

[Rafael J. Wysocki]

On Monday, 18 of August 2008, Jayanthi Annadurai wrote:
> Hello,

Hi,

> We are doing development on a MIPS based chip with linux 2.6.24 kernel.
> We want to suspend a device when it is not used. The attribute
> /sys/devices/platform/../power/state has been removed. What is the
> replacement of this?
> What is the user interface to do the same?

There's no replacement at the moment, because we have no infrastructure
for this kind of functionality.

There is a plan to introduce such a infrastructure in future, but that rather
won't happen any time soon.

Thanks,
Rafael

Re: Power management for individual devices

[Pavel Machek]

Hi!
> 
> We are doing development on a MIPS based chip with linux 2.6.24 kernel.
> We want to suspend a device when it is not used. The attribute
> /sys/devices/platform/../power/state has been removed. What is the
> replacement of this?
> What is the user interface to do the same?

Just suspend devices when they are not used; you should not need
new interface(s) to do that.
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html