> Now, what I need in the kernel is to _selectively_ suspend devices
> that are not needed in the "backup/emergency" mode.
Which means you need to get the applications using them to die - or you
could rewrite the driver top to bottom to have locking sufficient to
ensure that your power management
On 25 October 2017 at 01:56, Alan Cox wrote:
>
> For a lot of devices if you close it then it will try and put the device
> into a low power state. If a driver isn't doing that then (unless there
> are hardware constraints preventing it) it would make sense to fix it.
>
> There are some things ent
> I could not find anything standard that let me power gate single
> device from userland. Perhaps it's considered as a too risky operation
> to expose to the user. I don't want to touch drivers too much as well
> not to make them dependant on extra system feature. Better to have a
> separate modul
Hi
I am looking for a convenient way to power gate specific single device
when the platform is running in backup mode - the platform lost main
power supply and it's on backup buttery now. The intention is to save
max power in backup mode and switch off all unnecessary blocks.
I could not find any
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