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linux
HID: ntrig: document sysfs interface
Add sysfs documentation for N-Trig touchscreens under Documentation/ABI.
Descriptions have been collected from code comments.
Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
authored by
Aishwarya Pant
and committed by
Jiri Kosina
b55dc1dc
09f3fe40
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Documentation/ABI/testing/sysfs-driver-hid-ntrig
+70
Documentation/ABI/testing/sysfs-driver-hid-ntrig
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What: /sys/bus/hid/drivers/ntrig/<dev>/activate_slack
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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(RW) Number of contact frames ignored before acknowledging the
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start of activity (activating touch).
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What: /sys/bus/hid/drivers/ntrig/<dev>/decativate_slack
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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(RW) Number of empty (no contact) frames ignored before
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acknowledging the end of activity (deactivating touch).
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When the last finger is removed from the device, it sends a
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number of empty frames. By holding off on deactivation for a few
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frames false erroneous disconnects can be tolerated, where the
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sensor may mistakenly not detect a finger that is still present.
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What: /sys/bus/hid/drivers/ntrig/<dev>/activation_width
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What: /sys/bus/hid/drivers/ntrig/<dev>/activation_height
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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Threholds to override activation slack.
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activation_width: (RW) Width threshold to immediately
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start processing touch events.
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activation_height: (RW) Height threshold to immediately
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start processing touch events.
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What: /sys/bus/hid/drivers/ntrig/<dev>/min_width
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What: /sys/bus/hid/drivers/ntrig/<dev>/min_height
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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Minimum size contact accepted.
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min_width: (RW) Minimum touch contact width to decide
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activation and activity.
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min_height: (RW) Minimum touch contact height to decide
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activation and activity.
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What: /sys/bus/hid/drivers/ntrig/<dev>/sensor_physical_width
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What: /sys/bus/hid/drivers/ntrig/<dev>/sensor_physical_height
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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(RO) These are internal ranges not used for normal events but
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useful for tuning.
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What: /sys/bus/hid/drivers/ntrig/<dev>/sensor_logical_width
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What: /sys/bus/hid/drivers/ntrig/<dev>/sensor_logical_height
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Date: May, 2010
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KernelVersion: 2.6.35
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Contact: linux-input@vger.kernel.org
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Description:
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(RO) The range for positions reported during activity.