Re: [RFC 09/10 v2] v4l2-subdev: re-add s_standby to v4l2_subdev_core_ops

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On Sat, 23 May 2009, Robert Jarzmik wrote:

> Guennadi Liakhovetski <g.liakhovetski@xxxxxx> writes:
> 
> > I think we can put the camera to a low-power state in streamoff. But - not 
> > power it off! This has to be done from system's PM functions.
> That means, from a sensor POV, through icd->stop_capture().
> For my single mt9m111, it's fine by me, as the mt9m111 does have a powersave
> mode. Yet I'm wondering if there are sensors without that capability, with only
> one control (ie. one GPIO line) to switch them on and off ...

Doesn't this actually belong to PM? I begin to think that our whole 
->power() handling might be a bit suboptimally placed and should migrate 
to pm, one might give it some thinking...

> > What was there on linux-pm about managing power of single devices?...
> Reference ?

I meant this thread

http://thread.gmane.org/gmane.linux.power-management.general/4655/focus=4670

as you see, it is not very fresh, and I have no idea what came out of it, 
have a look if you're interested.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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