On Wed, 6 Dec 2017, Mark Brown wrote: > On Wed, Dec 06, 2017 at 03:26:47PM +0100, Ricard Wanderlof wrote: > > On Wed, 6 Dec 2017, Mark Brown wrote: > > > > That just sounds like a regulator? I'd expect that just to be used as a > > > supply as normal. > > > You mean as a DAPM widget? > > Or via a device which uses it. > > > > What audio specific control would this device be provdiing? > > > What it does provide is current sensing if the connected device draws too > > much power, although it does not automatically shut off the connected > > device if that is the case, so a small driver is required to shut down the > > output in the case of overcurrent. There's also a requirement to be able > > to read the overcurrent status. One approach is to implementet the whole > > thing as an auxilliary device, with one ALSA control to control the power, > > and a read only control to read the overcurrent status. > > That does sound like an auxiliary device that's a regulator consumer. So essentially one would register this device as an auxiliary device, which would define a DAPM widget which in turn would be part of a DAPM route in the encompassing machine driver? /Ricard -- Ricard Wolf Wanderlöf ricardw(at)axis.com Axis Communications AB, Lund, Sweden www.axis.com Phone +46 46 272 2016 Fax +46 46 13 61 30 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
