Soundcard powerdown

[Nate Lawson]

Igor Partola wrote:
> Good time of day,
> 
> I found an interesting feature under the Windows installation on my 
> laptop. It seems that when there is no sound playing the soundcard is 
> shut off. I'm not sure how much power this would save but it is 
> interesting that this is possible. Maybe this could appear on a distant 
> wishlist.

That would need to be built into the sound card driver (or snd 
mid-layer).  All it would have to do is call pci_set_powerstate(dev, 
...D3) on attach and then set it to D0 before beginning playback.

-- 
Nate