diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/ABI/testing/sysfs-devices-platform-trackpoint | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-devices-platform-trackpoint')
-rw-r--r-- | Documentation/ABI/testing/sysfs-devices-platform-trackpoint | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-devices-platform-trackpoint b/Documentation/ABI/testing/sysfs-devices-platform-trackpoint new file mode 100644 index 000000000..df11901a6 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-devices-platform-trackpoint @@ -0,0 +1,115 @@ +What: /sys/devices/platform/i8042/.../sensitivity +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Trackpoint sensitivity. + +What: /sys/devices/platform/i8042/.../intertia +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Negative inertia factor. High values cause the cursor to + snap backward when the trackpoint is released. + +What: /sys/devices/platform/i8042/.../reach +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Backup range for z-axis press. + +What: /sys/devices/platform/i8042/.../draghys +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) The drag hysteresis controls how hard it is to drag with + z-axis pressed. + +What: /sys/devices/platform/i8042/.../mindrag +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Minimum amount of force needed to trigger dragging. + +What: /sys/devices/platform/i8042/.../speed +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Speed of the trackpoint cursor. + +What: /sys/devices/platform/i8042/.../thresh +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Minimum value for z-axis force required to trigger a press + or release, relative to the running average. + +What: /sys/devices/platform/i8042/.../upthresh +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) The offset from the running average required to generate a + select (click) on z-axis on release. + +What: /sys/devices/platform/i8042/.../ztime +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) This attribute determines how sharp a press has to be in + order to be recognized. + +What: /sys/devices/platform/i8042/.../jenks +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Minimum curvature in degrees required to generate a double + click without a release. + +What: /sys/devices/platform/i8042/.../skipback +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) When the skipback bit is set, backup cursor movement during + releases from drags will be suppressed. The default value for + this bit is 0. + +What: /sys/devices/platform/i8042/.../ext_dev +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Disable (0) or enable (1) external pointing device. + +What: /sys/devices/platform/i8042/.../press_to_select +Date: Aug, 2005 +KernelVersion: 2.6.14 +Contact: linux-input@vger.kernel.org +Description: + (RW) Writing a value of 1 to this file will enable the Press to + Select functions like tapping the control stick to simulate a + left click, and writing 0 will disable it. + +What: /sys/devices/platform/i8042/.../drift_time +Date: Dec, 2014 +KernelVersion: 3.19 +Contact: linux-input@vger.kernel.org +Description: + (RW) This parameter controls the period of time to test for a + ‘hands off’ condition (i.e. when no force is applied) before a + drift (noise) calibration occurs. + + IBM Trackpoints have a feature to compensate for drift by + recalibrating themselves periodically. By default, if for 0.5 + seconds there is no change in position, it's used as the new + zero. This duration is too low. Often, the calibration happens + when the trackpoint is in fact being used. |