diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2020-09-13 23:05:19 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2020-09-13 23:08:47 -0700 |
| commit | 4e5d9c198349233b2ba9eb41597a8fc9a662d608 (patch) | |
| tree | 4730145ae39bfc57d42b630c2bfadb9a3258befe /drivers/input/misc | |
| parent | 838fc8083b6241c50b0be105b47006b3ae9c9ed8 (diff) | |
Input: soc_button_array - add support for INT33D3 tablet-mode switch devices
According to the Microsoft documentation for Windows 8 convertible
devices, these devices should implement a PNP0C60 "laptop/slate mode state
indicator" ACPI device.
This device can work in 2 ways, if there is a GPIO which directly
indicates the device is in tablet-mode or not then the direct-gpio mode
should be used. If there is no such GPIO, but instead the events are
coming from e.g. the embedded-controller, then there should still be
a PNP0C60 ACPI device and event-injection should be used to send the
events. The drivers/platform/x86/intel-vbtn.c code is an example from
a standardized manner of doing the latter.
On various 2-in-1s with either a detachable keyboard, or with 360°
hinges, the direct GPIO mode is indicated by an ACPI device with a
HID of INT33D3, which contains a single GpioInt in its ACPI resource
table, which directly indicates if the device is in tablet-mode or not.
This commit adds support for this to the soc_button_array code, as
well as for the alternative ID9001 HID which some devices use
instead of the INT33D3 HID.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20200826150601.12137-3-hdegoede@redhat.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/misc')
| -rw-r--r-- | drivers/input/misc/soc_button_array.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c index e3a22a61f5d9..837c787e9c4b 100644 --- a/drivers/input/misc/soc_button_array.c +++ b/drivers/input/misc/soc_button_array.c @@ -397,6 +397,15 @@ static const struct soc_device_data soc_device_PNP0C40 = { .button_info = soc_button_PNP0C40, }; +static const struct soc_button_info soc_button_INT33D3[] = { + { "tablet_mode", 0, EV_SW, SW_TABLET_MODE, false, false, false }, + { } +}; + +static const struct soc_device_data soc_device_INT33D3 = { + .button_info = soc_button_INT33D3, +}; + /* * Special device check for Surface Book 2 and Surface Pro (2017). * Both, the Surface Pro 4 (surfacepro3_button.c) and the above mentioned @@ -459,6 +468,8 @@ static const struct soc_device_data soc_device_MSHW0040 = { static const struct acpi_device_id soc_button_acpi_match[] = { { "PNP0C40", (unsigned long)&soc_device_PNP0C40 }, + { "INT33D3", (unsigned long)&soc_device_INT33D3 }, + { "ID9001", (unsigned long)&soc_device_INT33D3 }, { "ACPI0011", 0 }, /* Microsoft Surface Devices (5th and 6th generation) */ |