linux-kernel - [PATCH] HID: lenovo: Use KEY_PERFORMANCE instead of ACPI's platform

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Message-Id: <20250901-hid-lenovo-drop-platform_profile-v1-1-e2e9c68483ab@jannau.net>
Date: Mon, 01 Sep 2025 12:20:07 +0200
From: Janne Grunau <j@...nau.net>
To: Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <bentiss@...nel.org>, 
 Vishnu Sankar <vishnuocv@...il.com>
Cc: linux-input@...r.kernel.org, regressions@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, stable@...r.kernel.org, 
 Janne Grunau <j@...nau.net>
Subject: [PATCH] HID: lenovo: Use KEY_PERFORMANCE instead of ACPI's
 platform_profile

Commit 84c9d2a968c82 ("HID: lenovo: Support for ThinkPad-X12-TAB-1/2 Kbd
Fn keys") added a dependency on ACPI's platform_profile. This should not
be done for generic USB devices as this prevents using the devices on
non ACPI devices like Apple silicon Macs and other non-ACPI arm64
systems. An attempt to allow using platform_profile on non-ACPI systems
was rejected in [1] and instead platform_profile was made to fail during
init in commit dd133162c9cf ("ACPI: platform_profile: Avoid initializing
on non-ACPI platforms").
So remove the broken dependency and instead let's user space handle this
keycode by sending the new KEY_PERFORMANCE. Stable backport depends on
commit 89c5214639294 ("Input: add keycode for performance mode key").

[1]: https://lore.kernel.org/linux-acpi/CAJZ5v0icRdTSToaKbdf=MdRin4NyB2MstUVaQo8VR6-n7DkVMQ@mail.gmail.com/

Cc: regressions@...ts.linux.dev
Cc: stable@...r.kernel.org
Fixes: 84c9d2a968c82 ("HID: lenovo: Support for ThinkPad-X12-TAB-1/2 Kbd Fn keys")
Signed-off-by: Janne Grunau <j@...nau.net>
---
 #regzbot introduced: 84c9d2a968c82
---
 drivers/hid/Kconfig      | 2 --
 drivers/hid/hid-lenovo.c | 4 +---
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index a57901203aeb284acd23be727d2fad0c137c101c..8ae63f8257cd582448e9683ca7fc654c8e465c0f 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -597,8 +597,6 @@ config HID_LED
 
 config HID_LENOVO
 	tristate "Lenovo / Thinkpad devices"
-	depends on ACPI
-	select ACPI_PLATFORM_PROFILE
 	select NEW_LEDS
 	select LEDS_CLASS
 	help
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index b3121fa7a72d73f2b9ac12f36bc3d87c2649c69b..654879814f97aaf876ac16c00bf9efca22d116f3 100644
--- a/drivers/hid/hid-lenovo.c
+++ b/drivers/hid/hid-lenovo.c
@@ -32,8 +32,6 @@
 #include <linux/leds.h>
 #include <linux/workqueue.h>
 
-#include <linux/platform_profile.h>
-
 #include "hid-ids.h"
 
 /* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
@@ -734,7 +732,7 @@ static int lenovo_raw_event_TP_X12_tab(struct hid_device *hdev, u32 raw_data)
 				report_key_event(input, KEY_RFKILL);
 				return 1;
 			}
-			platform_profile_cycle();
+			report_key_event(input, KEY_PERFORMANCE);
 			return 1;
 		case TP_X12_RAW_HOTKEY_FN_F10:
 			/* TAB1 has PICKUP Phone and TAB2 use Snipping tool*/

---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250901-hid-lenovo-drop-platform_profile-d59013f79a59

Best regards,
-- 
Janne Grunau <j@...nau.net>