Issue
I am writing a virtio driver for a device that is seen in the original driver as a platform device, that is the parent of a character device in the device tree.
In the tutorials that I followed, The virtio drivers are always done for "regular" character devices.
I wanted to create my virtio driver for it to expose a fake platform device as a parent of a "regular" character device.
My question is this one: Should I detect my virtual device in the regular way using the probe function and then create my platform device inside of it or is there a recommended way or order to create both (the platform device and the character device (child))?
Solution
When we get the virtio device and trigger the associated probe, we can then register a platform driver and then add some platform devices correponding to your needs.
And your device will appear as a platform device instead of a virtio_device in the guest OS.
Answered By - Dufy Teguia Answer Checked By - Clifford M. (WPSolving Volunteer)