Re: [RFC 1/5] soundwire: bus_type: add sdw_master_device support

From: Greg KH
Date: Tue Apr 28 2020 - 02:37:46 EST


On Tue, Apr 28, 2020 at 10:01:44AM +0530, Vinod Koul wrote:
> > > That is not true for everyone, it is only true for Intel, pls call that
> > > out as well...
> >
> > Why is it not true for everyone? How else do you get the pm stuff back
> > to your hardware?
>
> The rest of the world would do using the real controller device. For
> example the soundwire controller on Qualcomm devices is enumerated as a
> DT device and is using these...
>
> If Intel had a standalone controller or enumerated as individual
> functions, it would have been a PCI device and would manage as such

If it is not a standalone controller, what exactly is it? I thought it
was an acpi device, am I mistaken?

What is the device that the proper soundwire controller driver binds to
on an Intel-based system?

thanks,

greg k-h