Commit ab66724a authored May 23, 2021 by Hans de Goede

platform/x86: ideapad-laptop: Ignore VPC event bit 10

VPC event bit 10 gets set on a Yoga 300-11IBR when the EC believes that the
device has changed between laptop/tent/stand/tablet mode.

The EC relies on getting angle info from 2 accelerometers through a special
windows service calling a DSM on the DUAL250E ACPI-device. Linux does not
do this, making the laptop/tent/stand/tablet mode info unreliable.

Ignore VPC event bit 10 to avoid the warnings triggered by the default case
in ideapad_acpi_notify().

Note that the plan for Linux is to have iio-sensor-proxy read the 2
accelerometers and have it provide info about which mode 360° hinges
2-in-1s to the rest of userspace:
https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/issues/216

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20210523172331.177834-1-hdegoede@redhat.com

parent b6c3c6ff

drivers/platform/x86/ideapad-laptop.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -1408,6 +1408,18 @@ static void ideapad_acpi_notify(acpi_handle handle, u32 event, void *data)
		case 6:
		ideapad_input_report(priv, bit);
		break;
		case 10:
		/*
		* This event gets send on a Yoga 300-11IBR when the EC
		* believes that the device has changed between laptop/
		* tent/stand/tablet mode. The EC relies on getting
		* angle info from 2 accelerometers through a special
		* windows service calling a DSM on the DUAL250E ACPI-
		* device. Linux does not do this, making the laptop/
		* tent/stand/tablet mode info unreliable, so we simply
		* ignore these events.
		*/
		break;
		case 9:
		ideapad_sync_rfk_state(priv);
		break;