Those events occur when a keyboard cover is attached to a ThinkPad
Tablet device. Typically, they are used to switch from normal to tablet
mode in userspace; e.g., to offer touch keyboard choices when focus goes
to a text box and no keyboard is attached, or to enable autorotation of
the display according to the builtin orientation sensor.
No attempt is taken to emit an EV_SW event for SW_TABLET_MODE; this is
left to userspace. So this patch is mainly to avoid warnings about
unknown and unhandled events, which are now reported as:
* Event 0x4012: attached keyboard cover
* Event 0x4013: detached keyboard cover
Tested as working on a ThinkPad X1 Tablet Gen 2, 20JCS00C00, and as
non-interfering with a ThinkPad X1 Carbon 7th, 20QESABM02 (normal
clamshell, so it does not have a keyboard cover).
Signed-off-by: Alexander Kobel <a-kobel@xxxxxxxxxx>
---
drivers/platform/x86/thinkpad_acpi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c404706379d9..fd5322b5bbbd 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -174,6 +174,8 @@ enum tpacpi_hkey_event_t {
or port replicator */
TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug
dock or port replicator */
+ TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* attached keyboard cover */
+ TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* detached keyboard cover */
/* User-interface events */
TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */
@@ -3989,6 +3991,12 @@ static bool hotkey_notify_dockevent(const u32 hkey,
case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */
pr_info("undocked from hotplug port replicator\n");
return true;
+ case TP_HKEY_EV_KBD_COVER_ATTACH:
+ pr_info("attached keyboard cover\n");
+ return true;
+ case TP_HKEY_EV_KBD_COVER_DETACH:
+ pr_info("detached keyboard cover\n");
+ return true;
default:
return false;
--
2.30.0
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
