On Tue, Apr 28, 2020 at 12:19:51PM +0530, Vinod Koul wrote: > On 28-04-20, 08:37, Greg KH wrote: > > 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? > > The HDA controller which is a PCI device. The device represent HDA > function, DSP and Soundwire controller instances (yes it is typically > more than one instance) Then those "instances" should be split up into individual devices that a driver can bind to. See the work happening on the "virtual" bus for examples of how that can be done. A platform device better not be being used here, I'm afraid to look at the code now... greg k-h
