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authorMauro Carvalho Chehab <mchehab@s-opensource.com>2017-04-04 17:51:04 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-04-05 15:45:07 -0700
commite2ba573120feadfb365467f0cdae2918926efabc (patch)
tree0274ef579fcafc4646d0c82eeb4ae826ff61cfbd /Documentation/input/edt-ft5x06.txt
parentInput: yealink - convert documentation into ReST format (diff)
downloadlinux-dev-e2ba573120feadfb365467f0cdae2918926efabc.tar.xz
linux-dev-e2ba573120feadfb365467f0cdae2918926efabc.zip
Input: create a book with Linux Input documentation
Now that all files under Documentation/input follows the ReST markup language, rename them to *.rst and create a book for the Linux Input subsystem. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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-EDT ft5x06 based Polytouch devices
-----------------------------------
-
-The edt-ft5x06 driver is useful for the EDT "Polytouch" family of capacitive
-touch screens. Note that it is *not* suitable for other devices based on the
-focaltec ft5x06 devices, since they contain vendor-specific firmware. In
-particular this driver is not suitable for the Nook tablet.
-
-It has been tested with the following devices:
- * EP0350M06
- * EP0430M06
- * EP0570M06
- * EP0700M06
-
-The driver allows configuration of the touch screen via a set of sysfs files:
-
-/sys/class/input/eventX/device/device/threshold:
- allows setting the "click"-threshold in the range from 20 to 80.
-
-/sys/class/input/eventX/device/device/gain:
- allows setting the sensitivity in the range from 0 to 31. Note that
- lower values indicate higher sensitivity.
-
-/sys/class/input/eventX/device/device/offset:
- allows setting the edge compensation in the range from 0 to 31.
-
-/sys/class/input/eventX/device/device/report_rate:
- allows setting the report rate in the range from 3 to 14.
-
-
-For debugging purposes the driver provides a few files in the debug
-filesystem (if available in the kernel). In /sys/kernel/debug/edt_ft5x06
-you'll find the following files:
-
-num_x, num_y:
- (readonly) contains the number of sensor fields in X- and
- Y-direction.
-
-mode:
- allows switching the sensor between "factory mode" and "operation
- mode" by writing "1" or "0" to it. In factory mode (1) it is
- possible to get the raw data from the sensor. Note that in factory
- mode regular events don't get delivered and the options described
- above are unavailable.
-
-raw_data:
- contains num_x * num_y big endian 16 bit values describing the raw
- values for each sensor field. Note that each read() call on this
- files triggers a new readout. It is recommended to provide a buffer
- big enough to contain num_x * num_y * 2 bytes.
-
-Note that reading raw_data gives a I/O error when the device is not in factory
-mode. The same happens when reading/writing to the parameter files when the
-device is not in regular operation mode.