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Commit aa3d4409 authored by Martin Kepplinger's avatar Martin Kepplinger Committed by Dmitry Torokhov
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Input: edt-ft5x06 - increase allowed data range for threshold parameter 



The datasheet and application note does not mention an allowed range for
the M09_REGISTER_THRESHOLD parameter. One of our customers needs to set
lower values than 20 and they seem to work just fine on EDT EP0xx0M09 with
T5x06 touch.

So, lacking a known lower limit, we increase the range for thresholds,
and set the lower limit to 0. The documentation is updated accordingly.

Signed-off-by: default avatarSchoefegger Stefan <stefan.schoefegger@ginzinger.com>
Signed-off-by: default avatarManfred Schlaegl <manfred.schlaegl@ginzinger.com>
Signed-off-by: default avatarMartin Kepplinger <martin.kepplinger@ginzinger.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 3af92561

Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt

+1 −1
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ Optional properties: 
                control gpios



 - threshold:   allows setting the "click"-threshold in the range

                from 20 to 80.

                from 0 to 80.



 - gain:        allows setting the sensitivity in the range from 0 to

                31. Note that lower values indicate higher

Documentation/input/devices/edt-ft5x06.rst

+1 −1
Original line number Diff line number Diff line
@@ -15,7 +15,7 @@ It has been tested with the following devices: 
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.

    allows setting the "click"-threshold in the range from 0 to 80.



/sys/class/input/eventX/device/device/gain:

    allows setting the sensitivity in the range from 0 to 31. Note that

drivers/input/touchscreen/edt-ft5x06.c

+1 −1
Original line number Diff line number Diff line
@@ -471,7 +471,7 @@ static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, 
static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET,

		M09_REGISTER_OFFSET, 0, 31);

static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD,

		M09_REGISTER_THRESHOLD, 20, 80);

		M09_REGISTER_THRESHOLD, 0, 80);

static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE,

		NO_REGISTER, 3, 14);