The following DRM properties are supported: The Linux gadget device driver will serve as the canonical device implementation. This adds a generic USB display driver with the intention that it can be used with future USB interfaced low end displays/adapters. The generic USB display driver patch explains all the interesting technical details: A video embedded below shows the Generic USB display driver in action with different hosts/devices. Performance is obviously a big concern for USB-based displays but even for low-end Raspberry Pi hardware he's been getting some promising results. It would have been nice to have a microcontroller implementation to ensure that I haven't made things unnecessary difficult to implement." I was hoping to have someone working on a microcontroller based USB display by now, but unfortunately that has been delayed. Noralf noted, " The reason for calling it 'Generic' is so anyone can make a USB display/adapter against this driver, all that's needed is to add a USB vid:pid. The Generic USB Display Driver is a generic solution for using the likes of the Raspberry Pi SBCs into converting them into makeshift USB display adapters via a new USB host driver and a device/gadget driver. This driver was written following his idea of turning a Raspberry Pi Zero into a USB to HDMI display adapter. Longtime Linux DRM developer Noralf Trønnes has written a new driver for Linux to serve generic USB display purposes.
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