Messages in this thread | | | Date | Thu, 25 Nov 2010 13:49:08 +0000 | From | Mark Brown <> | Subject | Re: [RFC/PATCH v6 05/12] media: Reference count and power handling |
| |
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.
BTW, I notice you've not CCed the ALSA list, Liam, Takashi or Jaroslav on any of this - might be good.
| |