linux-kernel - [PATCH 2/2] platform/x86: ideapad-laptop: map Fn + R key to KEY_FN

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Date: Tue, 20 Feb 2024 04:39:36 +0100
From: Gergo Koteles <soyer@....hu>
To: Ike Panhc <ike.pan@...onical.com>,
  Hans de Goede <hdegoede@...hat.com>,
  Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
  Dmitry Torokhov <dmitry.torokhov@...il.com>,
  Philipp Jungkamp <p.jungkamp@....net>
Cc: platform-driver-x86@...r.kernel.org,
  linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
  Gergo Koteles <soyer@....hu>
Subject: [PATCH 2/2] platform/x86: ideapad-laptop: map Fn + R key to KEY_FN_R

Newer Lenovo Yogas (e.g. Yoga 7 14ARB7) and Legions with 60Hz/90Hz
displays send a wmi event when Fn + R is pressed. This is intended for
use to adjust refresh rate, but there is no silkscreen print on the R
key to indicate this.

The Fn + R key is incorrectly assigned to KEY_DISPLAYTOGGLE, as the
latter is used to toggle the display on and off.

Map the Fn + R key to a more generic KEY_FN_R event code, since the
refresh rate toggle feature is not common and is only used by a few
Lenovo laptops.

This commit depends on "platform/x86: ideapad-laptop: support Fn+R
dual-function key"

Signed-off-by: Gergo Koteles <soyer@....hu>
---
 drivers/platform/x86/ideapad-laptop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
index 4c130957f80d..c31c96228912 100644
--- a/drivers/platform/x86/ideapad-laptop.c
+++ b/drivers/platform/x86/ideapad-laptop.c
@@ -1092,7 +1092,7 @@ static const struct key_entry ideapad_keymap[] = {
 	{ KE_KEY,	0x0e | IDEAPAD_WMI_KEY, { KEY_PICKUP_PHONE } },
 	{ KE_KEY,	0x0f | IDEAPAD_WMI_KEY, { KEY_HANGUP_PHONE } },
 	/* Refresh Rate Toggle (Fn+R) */
-	{ KE_KEY,	0x10 | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } },
+	{ KE_KEY,	0x10 | IDEAPAD_WMI_KEY, { KEY_FN_R } },
 	/* Dark mode toggle */
 	{ KE_KEY,	0x13 | IDEAPAD_WMI_KEY, { KEY_PROG1 } },
 	/* Sound profile switch */
@@ -1102,7 +1102,7 @@ static const struct key_entry ideapad_keymap[] = {
 	/* Lenovo Support */
 	{ KE_KEY,	0x27 | IDEAPAD_WMI_KEY, { KEY_HELP } },
 	/* Refresh Rate Toggle */
-	{ KE_KEY,	0x0a | IDEAPAD_WMI_KEY, { KEY_DISPLAYTOGGLE } },
+	{ KE_KEY,	0x0a | IDEAPAD_WMI_KEY, { KEY_FN_R } },
 
 	{ KE_END },
 };
-- 
2.43.2