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authorScott Liu <scott.liu@emc.com.tw>2014-11-19 17:26:44 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-12-07 23:09:23 -0800
commit66aee90088da2f5fb73ba97ee8b5f4fda92e2b53 (patch)
tree9dfd705f23a1579504b12ba648f394c851f4726f /Documentation/devicetree/bindings/input
parentaf906faabcf91eb12397d8954f89e289a8b96af5 (diff)
Input: add support for Elan eKTH I2C touchscreens
This driver supports Elan eKTH I2C touchscreen controllers. Note that these are using custom protocol, as opposed to other Elan parts that use HID-over-I2C and are supported by the standard HID-multitouch driver. Signed-off-by: Scott Liu <scott.liu@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
-rw-r--r--Documentation/devicetree/bindings/input/elants_i2c.txt33
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/elants_i2c.txt b/Documentation/devicetree/bindings/input/elants_i2c.txt
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index 000000000000..a765232e6446
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/elants_i2c.txt
@@ -0,0 +1,33 @@
+Elantech I2C Touchscreen
+
+Required properties:
+- compatible: must be "elan,ekth3500".
+- reg: I2C address of the chip.
+- interrupt-parent: a phandle for the interrupt controller (see interrupt
+ binding[0]).
+- interrupts: interrupt to which the chip is connected (see interrupt
+ binding[0]).
+
+Optional properties:
+- wakeup-source: touchscreen can be used as a wakeup source.
+- pinctrl-names: should be "default" (see pinctrl binding [1]).
+- pinctrl-0: a phandle pointing to the pin settings for the device (see
+ pinctrl binding [1]).
+
+[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+
+Example:
+ &i2c1 {
+ /* ... */
+
+ touchscreen@10 {
+ compatible = "elan,ekth3500";
+ reg = <0x10>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
+ wakeup-source;
+ };
+
+ /* ... */
+ };

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