On Tue, Jun 30, 2020 at 02:27:10PM -0300, Jason Gunthorpe wrote:

I wonder if SW_MFD might me more apt though? Based on Mark's remarks
current MFD is 'hw' MFD where the created platform_devices expect a
MMIO pass through, while this is a MFD a device-specific SW
interfacing layer.

Another part of this is that there's not a clean cut over between MMIO
and not using any hardware resources at all - for example a device might
be connected over I2C but use resources to distribute interrupts to
subdevices.

MFD really is the best name for this kind of functionality,
understanding how it is different from the current MFD might also help
justify why it exists and give it a name.

Right, it's not clear what we're doing here.