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

Greg KH gregkh at linuxfoundation.org
Tue Apr 28 08:37:36 CEST 2020


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


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