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asus-wmi: Add dgpu disable method

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In Windows the ASUS Armory Crate program can enable or disable the
dGPU via a WMI call. This functions much the same as various Linux
methods in software where the dGPU is removed from the device tree.

However the WMI call saves the state of dGPU (enabled or not) and
this then changes the dGPU visibility in Linux with no way for
Linux users to re-enable it. We expose the WMI method so users can
see and change the dGPU ACPI state.

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20210807023656.25020-3-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Luke D. Jones
2021-08-07 14:36:55 +12:00
committed by Hans de Goede
parent ca91ea3477
commit 98829e84dc
2 changed files with 101 additions and 0 deletions
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3
include/linux/platform_data/x86/asus-wmi.h
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@@ -90,6 +90,9 @@
/* Keyboard dock */
#define ASUS_WMI_DEVID_KBD_DOCK 0x00120063
/* dgpu on/off */
#define ASUS_WMI_DEVID_DGPU 0x00090020
/* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002