On Wed, Apr 1, 2020 at 3:17 PM Simon Ser <contact@xxxxxxxxxxx> wrote:
On Wednesday, April 1, 2020 9:38 PM, Matt Hoosier <matt.hoosier@xxxxxxxxx> wrote:
> I'm searching for some sort of scheme that will let my DRI master query the set of available connectors and select the one carrying a prearranged designation. The problem I'm trying to solve is to allow deploying one standardized userspace component across a fleet of devices that have varying numbers of displays, with the use cases not always driven on the same connector topologically.
>
> I had a look around the properties available on my system's DRI connectors, and nothing immediate jumped out at me. Is there a standard connector property that (assuming I can find the right place in DeviceTree or similar to) that would be a good fit for this?
Maybe information in the EDID would help? You'll find the manufacturer,
the model number and the serial number.
That might be a possibility. The trouble there is that there can be more than one instance of the same display model connected to the system, so the EDID blob wouldn't be particularly helpful to distinguish them. The connectors in question are generally something like LVDS or DSI that don't typically expose EDID properties, too.
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