Hi, On Tue, 9 Jan 2024 at 18:12, Andri Yngvason <andri@xxxxxxxxxxx> wrote: > + * active color format: > + * This read-only property tells userspace the color format actually used > + * by the hardware display engine "on the cable" on a connector. The chosen > + * value depends on hardware capabilities, both display engine and > + * connected monitor. Drivers shall use > + * drm_connector_attach_active_color_format_property() to install this > + * property. Possible values are "not applicable", "rgb", "ycbcr444", > + * "ycbcr422", and "ycbcr420". How does userspace determine what's happened without polling? Will it only change after an `ALLOW_MODESET` commit, and be guaranteed to be updated after the commit has completed and the event being sent? Should it send a HOTPLUG event? Other? Cheers, Daniel
