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