Hi Carsten, On 2/13/23 11:43, Carsten Hatger wrote: > Dear all, > > I'd like to have tablet mode support on my system, probably by means > an linux input device such as implemented in the intel platform > specific driver drivers/platform/x86/intel/vbtn.c [0] > > In the end I hope GNOME eventually to rotate the systems display and > to show some virtual keyboard (upon users request), cf. for [3] > > It appears there has already been a patch proposed by the chromium > team to support device PNP0C60 [1] but not merged to [5]. > > Since the system of interest is a HP Probook, there is already a > driver providing virtual buttons,namely hp-wmi [6]. However, the > driver loads probes and loads successfully but doesn't provide any > additional functionality plus some non critical errors on incorrect > ACPI method calls. > > I've noticed AMD has started to provide platform specific driver(s) > such as pmf [2]. To my knowledge there is no support for CEZANNE/green > sardine based systems (yet). > > What would be recommended practice and subsystem/folder to provide > such capability by means of a (platform specific) driver? At least the > CID PNP0C60 seems to be held by Microsoft [4] and thus be common to > both amd and intel platforms [4]. However, HID INT33D6 is held by > Intel and HID AMDI0081 by AMD. Yet I'm not quite sure if > iio-sensor-proxy [7] needs to be involved, too. The first thing to do here is to figure out which (ACPI) device is the right device to get the SW_TABLET_MODE events from on this device. Maybe Jorge (added to the Cc) can help with this ? Regards, Hans > [0] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/platform/x86/intel/vbtn.c?h=v6.2-rc8 > [1] https://lore.kernel.org/lkml/1472628817-3145-1-git-send-email-wnhuang@xxxxxxxxxx/ > [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/platform/x86/amd/pmf?h=v6.2-rc8 > [3] https://gitlab.gnome.org/GNOME/mutter/-/issues/1760 > [4] https://learn.microsoft.com/en-us/windows-hardware/drivers/gpiobtn/button-implementation > [5] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/acpi/button.c?h=v6.2-rc8 > [6] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/platform/x86/hp/hp-wmi.c?h=v6.2-rc8 > [7] https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/ >
