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authorDuson Lin <dusonlin@emc.com.tw>2014-10-03 13:24:27 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-10-24 13:54:24 -0700
commit6696777c6506fa52b2a0282121195843ed855be6 (patch)
tree884054a61197a1a5cafaf06002e2ba38619ab1b3 /Documentation/devicetree/bindings/input
parentdae7aa8d849615134a11704cbd37fb45a22bd316 (diff)
Input: add driver for Elan I2C/SMbus touchpad
This driver supports Elan I2C/SMbus touchpads found in some laptops and also in many Chromebooks. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
-rw-r--r--Documentation/devicetree/bindings/input/elan_i2c.txt34
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diff --git a/Documentation/devicetree/bindings/input/elan_i2c.txt b/Documentation/devicetree/bindings/input/elan_i2c.txt
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+++ b/Documentation/devicetree/bindings/input/elan_i2c.txt
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+Elantech I2C Touchpad
+
+Required properties:
+- compatible: must be "elan,ekth3000".
+- 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: touchpad 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]).
+- vcc-supply: a phandle for the regulator supplying 3.3V power.
+
+[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
+[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+
+Example:
+ &i2c1 {
+ /* ... */
+
+ touchpad@15 {
+ compatible = "elan,ekth3000";
+ reg = <0x15>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
+ wakeup-source;
+ };
+
+ /* ... */
+ };

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