On Fri, Oct 25, 2019 at 2:33 PM Pali Rohár <pali.ro...@gmail.com> wrote:
> On Thursday 22 August 2019 13:48:33 Alexander Schremmer wrote:
> > This feature is found optionally in T480s, T490, T490s.
> >
> > The feature is called lcdshadow and visible via
> > /proc/acpi/ibm/lcdshadow.
> >
> > The ACPI methods \_SB.PCI0.LPCB.EC.HKEY.{GSSS,SSSS,TSSS,CSSS} are
> > available in these machines. They get, set, toggle or change the state
> > apparently.
> >
> > The patch was tested on a 5.0 series kernel on a T480s.> > + echo '0' >/proc/acpi/ibm/lcdshadow > > + echo '1' >/proc/acpi/ibm/lcdshadow > Hello! Is not the whole /proc/apci/ibm API for new things obsoleted or > deprecated? > And should not rather it use platform driver in /sys/ (class?) namespace? There is an ongoing discussion about API to this kind of devices somewhere in GPU mailing lists. This interface is custom and probably shall never have been appeared. However no-one prevented this from happening. -- With Best Regards, Andy Shevchenko _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
