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Commit e2fce5a5 authored by Osama Khan's avatar Osama Khan Committed by Greg Kroah-Hartman
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platform/x86: hp_accel: Add quirk for HP ProBook 440 G4 


[ Upstream commit 163ca80013aafb6dc9cb295de3db7aeab9ab43f8 ]

Added support for HP ProBook 440 G4 laptops by including the accelerometer
orientation quirk for that device. Testing was performed based on the
axis orientation guidelines here:
https://www.kernel.org/doc/Documentation/misc-devices/lis3lv02d


which states "If the left side is elevated, X increases (becomes positive)".

When tested, on lifting the left edge, x values became increasingly negative
thus indicating an inverted x-axis on the installed lis3lv02d chip.
This was compensated by adding an entry for this device in hp_accel.c
specifying the quirk as x_inverted. The patch was tested on a
ProBook 440 G4 device and x-axis as well as y and z-axis values are now
generated as per spec.

Signed-off-by: default avatarOsama Khan <osama.khan@ericsson.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7fab68e1

drivers/platform/x86/hp_accel.c

+1 −0
Original line number Diff line number Diff line
@@ -240,6 +240,7 @@ static const struct dmi_system_id lis3lv02d_dmi_ids[] = { 
	AXIS_DMI_MATCH("HDX18", "HP HDX 18", x_inverted),

	AXIS_DMI_MATCH("HPB432x", "HP ProBook 432", xy_rotated_left),

	AXIS_DMI_MATCH("HPB440G3", "HP ProBook 440 G3", x_inverted_usd),

	AXIS_DMI_MATCH("HPB440G4", "HP ProBook 440 G4", x_inverted),

	AXIS_DMI_MATCH("HPB442x", "HP ProBook 442", xy_rotated_left),

	AXIS_DMI_MATCH("HPB452x", "HP ProBook 452", y_inverted),

	AXIS_DMI_MATCH("HPB522x", "HP ProBook 522", xy_swap),