3a133f7c51
On the X380 Yoga, the `ECRD` and `ECWR` ACPI objects cannot be used for accessing the Embedded Controller: instead of a method that reads from the EC's memory, `ECRD` is the name of a location in high memory. This meant that trying to call them would fail with the following message: ACPI: \_SB.PCI0.LPCB.EC.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) With this commit, it is now possible to access the EC and read temperature and fan speed information. Note that while writes to the HFSP register do go through (as indicated by subsequent reads showing the new value), the fan does not actually change its speed. Signed-off-by: Daniel Bertalan <dani@danielbertalan.dev> Link: https://lore.kernel.org/r/20230414180034.63914-1-dani@danielbertalan.dev Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>