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Wed, 11 Mar 2026 07:35:02 -0700 (PDT) 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 v8 3/3] Documentation: thinkpad-acpi - Document doubletap_enable attribute Date: Wed, 11 Mar 2026 23:31:44 +0900 Message-ID: <20260311143144.482145-4-vishnuocv@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260311143144.482145-1-vishnuocv@gmail.com> References: <20260311143144.482145-1-vishnuocv@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Document the doubletap_enable sysfs attribute for ThinkPad ACPI driver. Signed-off-by: Vishnu Sankar --- Changes in v8: - Fixes indentation Changes in v7: - Fix formatting Changes in v6: - Fix formatting of doubletap_enable sysfs documentation (separate Values l= ist) --- .../admin-guide/laptops/thinkpad-acpi.rst | 21 +++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/admin-guide/laptops/thinkpad-acpi.rst b/Document= ation/admin-guide/laptops/thinkpad-acpi.rst index 03951ed6b628..f874db31801d 100644 --- a/Documentation/admin-guide/laptops/thinkpad-acpi.rst +++ b/Documentation/admin-guide/laptops/thinkpad-acpi.rst @@ -1522,6 +1522,27 @@ 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. =20 +doubletap_enable +---------------- + +sysfs: doubletap_enable + +Controls whether TrackPoint doubletap events are filtered out. Doubletap i= s a +feature where quickly tapping the TrackPoint twice triggers a special func= tion key event. + +The available commands are:: + + cat /sys/devices/platform/thinkpad_acpi/doubletap_enable + echo 1 | sudo tee /sys/devices/platform/thinkpad_acpi/doub= letap_enable + echo 0 | sudo tee /sys/devices/platform/thinkpad_acpi/doub= letap_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 ------ =20 --=20 2.51.0