Messages in this thread | | | From | Laurent Pinchart <> | Subject | Re: [RFC/PATCH v6 05/12] media: Reference count and power handling | Date | Thu, 25 Nov 2010 16:43:16 +0100 |
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Hi Mark,
On Thursday 25 November 2010 14:49:08 Mark Brown wrote: > On Thu, Nov 25, 2010 at 03:28:12AM +0100, Laurent Pinchart wrote: > > If the entity is of node type, the power change is distributed to > > all connected entities. For non-nodes it only affects that very > > node. A mutex is used to serialise access to the entity graph. > > ASoC has its own power management stuff which doesn't *quite* map onto > this one as-is. The power determination stuff is essentially identical > (and this is actually nicer) but we have a separate postprocessing stage > that actually applies the changes in a sequence which minimises audible > issues caused by doing things in a bad order (eg, power down a PGA > before you turn off inputs). This is noddy enough to implement, though > - we just need a pre and post run notifications to set up and implement > the changes I think.
That sounds feasible. Sakari, you've implemented power management, what do you think about this ?
> BTW, I notice you've not CCed the ALSA list, Liam, Takashi or Jaroslav > on any of this - might be good.
I've just subscrived to the alsa-devel list. I will make sure to CC it, as well as Liam, Takashi and Jaroslav, on the next version of the patches. Sorry about the missing CC's in these e-mails.
-- Regards,
Laurent Pinchart
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