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authorSebastian Reichel <sre@kernel.org>2014-05-28 23:51:53 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-05-29 00:05:59 -0700
commitb98abe52fa8e2a3797d3cc2db3d0e109f4549c03 (patch)
treee3ffbc076e4ff36eda0564106aada80fe67d8e2a /Documentation
parent50525cb3bf9dc7fe4cb8d4cd9b9e389257eaa8ee (diff)
Input: add common DT binding for touchscreens
Add common DT binding documentation for touchscreen devices and implement input_parse_touchscreen_of_params, which parses the common properties and configures the input device accordingly. The method currently does not interpret the axis inversion properties, since there is no matching flag in the generic linux input device. Reviewed-by: Pavel Machek <pavel@ucw.cz> Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt27
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diff --git a/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt b/Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
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+General Touchscreen Properties:
+
+Optional properties for Touchscreens:
+ - touchscreen-size-x : horizontal resolution of touchscreen
+ (in pixels)
+ - touchscreen-size-y : vertical resolution of touchscreen
+ (in pixels)
+ - touchscreen-max-pressure : maximum reported pressure (arbitrary range
+ dependent on the controller)
+ - touchscreen-fuzz-x : horizontal noise value of the absolute input
+ device (in pixels)
+ - touchscreen-fuzz-y : vertical noise value of the absolute input
+ device (in pixels)
+ - touchscreen-fuzz-pressure : pressure noise value of the absolute input
+ device (arbitrary range dependent on the
+ controller)
+ - touchscreen-inverted-x : X axis is inverted (boolean)
+ - touchscreen-inverted-y : Y axis is inverted (boolean)
+
+Deprecated properties for Touchscreens:
+ - x-size : deprecated name for touchscreen-size-x
+ - y-size : deprecated name for touchscreen-size-y
+ - moving-threshold : deprecated name for a combination of
+ touchscreen-fuzz-x and touchscreen-fuzz-y
+ - contact-threshold : deprecated name for touchscreen-fuzz-pressure
+ - x-invert : deprecated name for touchscreen-inverted-x
+ - y-invert : deprecated name for touchscreen-inverted-y

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