From 6696777c6506fa52b2a0282121195843ed855be6 Mon Sep 17 00:00:00 2001 From: Duson Lin Date: Fri, 3 Oct 2014 13:24:27 -0700 Subject: 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 Reviewed-by: Benson Leung Signed-off-by: Dmitry Torokhov --- .../devicetree/bindings/input/elan_i2c.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/elan_i2c.txt (limited to 'Documentation/devicetree/bindings/input/elan_i2c.txt') diff --git a/Documentation/devicetree/bindings/input/elan_i2c.txt b/Documentation/devicetree/bindings/input/elan_i2c.txt new file mode 100644 index 000000000000..ee3242c4ba67 --- /dev/null +++ b/Documentation/devicetree/bindings/input/elan_i2c.txt @@ -0,0 +1,34 @@ +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; + }; + + /* ... */ + }; -- cgit v1.2.3-59-g8ed1b