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Sun, 08 Feb 2026 22:34:53 -0800 (PST) Received: from c12-ThinkPad-X1-Carbon-Gen-12 ([2400:2410:5f2b:700:e705:6ccd:6241:6a0a]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2aa3ec42e2asm83440455ad.53.2026.02.08.22.34.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Feb 2026 22:34:53 -0800 (PST) From: Vishnu Sankar To: mpearson-lenovo@squebb.ca, dmitry.torokhov@gmail.com, hmh@hmh.eng.br, hansg@kernel.org, corbet@lwn.net, derekjohn.clark@gmail.com, ilpo.jarvinen@linux.intel.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, ibm-acpi-devel@lists.sourceforge.net, linux-doc@vger.kernel.org, platform-driver-x86@vger.kernel.org, vsankar@lenovo.com, Vishnu Sankar Subject: [PATCH v7 3/3] Documentation: thinkpad-acpi - Document doubletap_enable attribute Date: Mon, 9 Feb 2026 15:33:55 +0900 Message-ID: <20260209063355.491189-4-vishnuocv@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260209063355.491189-1-vishnuocv@gmail.com> References: <20260209063355.491189-1-vishnuocv@gmail.com> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document the doubletap_enable sysfs attribute for ThinkPad ACPI driver. Signed-off-by: Vishnu Sankar --- Changes in v6: - Fix formatting of doubletap_enable sysfs documentation (separate Values list) --- .../admin-guide/laptops/thinkpad-acpi.rst | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Documentation/admin-guide/laptops/thinkpad-acpi.rst index 4ab0fef7d440..9a660724648b 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -1521,6 +1521,27 @@ Currently 2 antenna types are supported as mentioned below: The property is read-only. If the platform doesn't have support the sysfs class is not created. +doubletap_enable +---------------- + +sysfs: doubletap_enable + +Controls whether TrackPoint doubletap events are filtered out. Doubletap is a +feature where quickly tapping the TrackPoint twice triggers a special function key event. + +The available commands are:: + + cat /sys/devices/platform/thinkpad_acpi/doubletap_enable + echo 1 | sudo tee /sys/devices/platform/thinkpad_acpi/doubletap_enable + echo 0 | sudo tee /sys/devices/platform/thinkpad_acpi/doubletap_enable + +Values: + + * 1 - doubletap events are processed (default) + * 0 - doubletap events are filtered out (ignored) + + This setting can also be toggled via the Fn+doubletap hotkey. + Auxmac ------ -- 2.51.0