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platform/x86/intel/hid: Add HP Dragonfly G2 to VGBS DMI quirks

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[ Upstream commit 7783e97f85 ]

HP Elite Dragonfly G2 (a convertible laptop/tablet) has a reliable VGBS
method. If VGBS is not called on boot, the firmware sends an initial
0xcd event shortly after calling the BTNL method, but only if the device
is booted in the laptop mode. However, if the device is booted in the
tablet mode and VGBS is not called, there is no initial 0xcc event, and
the input device for SW_TABLET_MODE is not registered up until the user
turns the device into the laptop mode.

Call VGBS on boot on this device to get the initial state of
SW_TABLET_MODE in a reliable way.

Tested with BIOS 1.13.1.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20230716183213.64173-1-maxtram95@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maxim Mikityanskiy
2023-07-16 21:32:13 +03:00
committed by Greg Kroah-Hartman
parent 7f3901b04c
commit a9988b9c7a
1 changed files with 6 additions and 0 deletions
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6
drivers/platform/x86/intel/hid.c
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@@ -138,6 +138,12 @@ static const struct dmi_system_id dmi_vgbs_allow_list[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Surface Go"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Elite Dragonfly G2 Notebook PC"),
},
},
{ }
};