Re: Question: How to power-manage UART-attached devices.

From: Mark Brown
Date: Mon Apr 30 2012 - 18:33:21 EST


On Tue, May 01, 2012 at 08:22:09AM +1000, NeilBrown wrote:

> The question is how can user-space tell the kernel that these devices are
> 'inactive'?

> I would like to integrate this into Linux in the most "natural" way that I
> can but am having trouble. My current approach involves using "rfkill" but
> that doesn't work very well for reasons that are probably not very relevant
> here. It probably does make sense for powering the GPS antenna, but not
> much else.

The userspace consumer was added for users like this that live entirely
in userspace.
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