From: Hans de Goede <hdegoede@redhat.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>, linux-input@vger.kernel.org
Subject: [PATCH resend 2/2] Input: soc_button_array - Add support for INT33D3 tablet-mode switch devices
Date: Sat, 20 Jun 2020 14:34:12 +0200 [thread overview]
Message-ID: <20200620123412.40465-3-hdegoede@redhat.com> (raw)
In-Reply-To: <20200620123412.40465-1-hdegoede@redhat.com>
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>
---
drivers/input/misc/soc_button_array.c | 11 +++++++++++
1 file changed, 11 insertions(+)
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) */
--
2.26.2
next prev parent reply other threads:[~2020-06-20 12:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-20 12:34 [PATCH resend 0/2] Input: soc_button_array - Add support for INT33D3 tablet-mode switch devices Hans de Goede
2020-06-20 12:34 ` [PATCH resend 1/2] Input: soc_button_array - Add active_low setting to soc_button_info Hans de Goede
2020-06-20 12:34 ` Hans de Goede [this message]
2020-08-26 15:05 [PATCH resend 0/2] Input: soc_button_array - Add support for INT33D3 ACPI tablet-switch device Hans de Goede
2020-08-26 15:06 ` [PATCH resend 2/2] Input: soc_button_array - Add support for INT33D3 tablet-mode switch devices Hans de Goede
2020-09-14 6:09 ` Dmitry Torokhov
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