Hi Hans, I am forwarding this question to the BIOS team to identify which ACPI device is the right device to get the SW_TABLET_MODE events. On Mon, Feb 13, 2023 at 6:31 AM Hans de Goede <hdegoede@xxxxxxxxxx> wrote: > > 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/ > > >
