On Tue, 25 Apr 2017 22:27:19 +0200, ville.syrjala@xxxxxxxxxxxxxxx wrote: > > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > I was wondering why my VLV no longer runtime suspended, and after some > thinking I decided it had to be the LPE audio preventing it. Turns out > I was right, so here's my attempt at fixing it. > > And while looking at the code I couldn't help but notice that it > couldn't actually handle multiple pipes playing back audio at the > same time. And even having multiple displays active even if only > one was playing audio was probably a recipe for failure. So I > tried to fix that by registering a separate PCM device for each > pipe. > > Note that the patch subjects may not reflect the subsystem > very well since most of these straddle the border between drm > and alsa. I think I just slapped on drm/i915 to most where > there was no clear winner. A nice patchset, thanks for working on it! One slight concern (other than the jack issue Pierre reported) is the incompatible behavior from the current version. With the pipe-based multiple streams, user would need to choose another one even if the device has a single HDMI output, which is pretty common on BYT/CHV tablets. Maybe it's no big problem as the users are still limited at the moment. Or, we may need to handle a bit differently, e.g. assigning the PCM stream dynamically per hotplug. In anyway, with the support of multi streams, alsa-lib config needs to be updated. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
