[PATCH] platform/x86: thinkpad_acpi: Send tablet mode switch at wakeup time

From: Benjamin Berg <benjamin@sipsolutions.net>
To: Hans de Goede <hdegoede@redhat.com>,
	Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br>
Cc: ibm-acpi-devel@lists.sourceforge.net,
	platform-driver-x86@vger.kernel.org,
	Benjamin Berg <bberg@redhat.com>
Subject: [PATCH] platform/x86: thinkpad_acpi: Send tablet mode switch at wakeup time
Date: Mon, 23 Nov 2020 14:21:57 +0100	[thread overview]
Message-ID: <20201123132157.866303-1-benjamin@sipsolutions.net> (raw)

From: Benjamin Berg <bberg@redhat.com>

The lid state may change while the machine is suspended. As such, we may
need to re-check the state at wake-up time (at least when waking up from
hibernation).
Add the appropriate call to the resume handler in order to sync the
SW_TABLET_MODE switch state with the hardware state.

Fixes: dda3ec0aa631 ("platform/x86: thinkpad_acpi: Implement tablet mode using GMMS method")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=210269
Signed-off-by: Benjamin Berg <bberg@redhat.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index e3810675090a..9104e0ee37cd 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -4228,6 +4228,7 @@ static void hotkey_resume(void)
 		pr_err("error while attempting to reset the event firmware interface\n");
 
 	tpacpi_send_radiosw_update();
+	tpacpi_input_send_tabletsw();
 	hotkey_tablet_mode_notify_change();
 	hotkey_wakeup_reason_notify_change();
 	hotkey_wakeup_hotunplug_complete_notify_change();
-- 
2.26.2

