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| author | Anthony Kim <anthony.kim@hideep.com> | 2017-10-26 00:57:04 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-11-10 21:18:22 +0300 |
| commit | 842ff286166e8512450573f6b6eb5e04e626a07f (patch) | |
| tree | 718844af4673c46a9ac48b824da4d25c3074e273 /Documentation/devicetree/bindings/input | |
| parent | 4a1a57df97636b9323c4221cc75a35694b6d34c7 (diff) | |
| download | linux-842ff286166e8512450573f6b6eb5e04e626a07f.tar.xz | |
Input: add support for HiDeep touchscreen
The HiDeep touchscreen device is a capacitive multi-touch controller
mainly for multi-touch supported devices use. It use I2C interface for
communication to IC and provide axis X, Y, Z locations for ten finger
touch through input event interface to userspace.
It support the Crimson and the Lime two type IC. They are different
the number of channel supported and FW size. But the working protocol
is same.
Signed-off-by: Anthony Kim <anthony.kim@hideep.com>
Acked-by: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/hideep.txt | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/hideep.txt b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt new file mode 100644 index 000000000000..121d9b7c79a2 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/hideep.txt @@ -0,0 +1,42 @@ +* HiDeep Finger and Stylus touchscreen controller + +Required properties: +- compatible : must be "hideep,hideep-ts" +- reg : I2C slave address, (e.g. 0x6C). +- interrupt-parent : Interrupt controller to which the chip is connected. +- interrupts : Interrupt to which the chip is connected. + +Optional properties: +- vdd-supply : It is the controller supply for controlling + main voltage(3.3V) through the regulator. +- vid-supply : It is the controller supply for controlling + IO voltage(1.8V) through the regulator. +- reset-gpios : Define for reset gpio pin. + It is to use for reset IC. +- touchscreen-size-x : X axis size of touchscreen +- touchscreen-size-y : Y axis size of touchscreen +- linux,keycodes : Specifies an array of numeric keycode values to + be used for reporting button presses. The array can + contain up to 3 entries. + +Example: + +#include "dt-bindings/input/input.h" + +i2c@00000000 { + + /* ... */ + + touchscreen@6c { + compatible = "hideep,hideep-ts"; + reg = <0x6c>; + interrupt-parent = <&gpx1>; + interrupts = <2 IRQ_TYPE_LEVEL_LOW>; + vdd-supply = <&ldo15_reg>"; + vid-supply = <&ldo18_reg>; + reset-gpios = <&gpx1 5 0>; + touchscreen-size-x = <1080>; + touchscreen-size-y = <1920>; + linux,keycodes = <KEY_HOME>, <KEY_MENU>, <KEY_BACK>; + }; +}; |