Hi, On Fri, May 23, 2025 at 02:34:05PM +0300, Jani Nikula wrote: > On Tue, 20 May 2025, Jani Nikula <jani.nik...@linux.intel.com> wrote: > > Maxime - > > > > I'm cutting a lot of context here. Not because I don't think it deserves > > an answer, but because I seem to be failing at communication. > > > > On Mon, 19 May 2025, Maxime Ripard <mrip...@kernel.org> wrote: > >> You still haven't explained why it would take anything more than > >> registering a dumb device at probe time though. > > > > With that, do you mean a dumb struct device, or any struct device with a > > suitable lifetime, that we'd pass to devm_drm_panel_alloc()? > > I'm no expert in ACPI, but I think it needs to be a struct device > embedded inside struct acpi_device to implement the > drm_panel_add_follower() lookup for ACPI.
What data do you have in the ACPI tables to associate the HID touchscreen to the panel? drm_panel_add_follower use the DT to lookup the panel, so the panel must have a device->of_node pointer, so that obviously won't work, but it might with ACPI, or we might need to split that function into several parts to accomodate ACPI. Maxime
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