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NOTES about msm drm/kms hyp driver:

This driver registers with drm framework for the purpose of creating the
/dev/dri/card0 path, which User Space DRM Masters rely on.
Furthermore, per-CRTC VBLANK and PAGE_FLIP events are queued to the device
path to notify User Space components listeners.

No other IOCTL or HW support is provided through this driver.