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>
This commit is contained in:
Scott Liu 2014-11-19 17:26:44 -08:00 committed by Dmitry Torokhov
parent af906faabc
commit 66aee90088
4 changed files with 1317 additions and 0 deletions

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@ -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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@ -347,6 +347,18 @@ config TOUCHSCREEN_GUNZE
To compile this driver as a module, choose M here: the
module will be called gunze.
config TOUCHSCREEN_ELAN
tristate "Elan eKTH I2C touchscreen"
depends on I2C
help
Say Y here if you have an Elan eKTH I2C touchscreen
connected to your system.
If unsure, say N.
To compile this driver as a module, choose M here: the
module will be called elants_i2c.
config TOUCHSCREEN_ELO
tristate "Elo serial touchscreens"
select SERIO

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@ -31,6 +31,7 @@ obj-$(CONFIG_TOUCHSCREEN_EDT_FT5X06) += edt-ft5x06.o
obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o
obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o
obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o
obj-$(CONFIG_TOUCHSCREEN_ELAN) += elants_i2c.o
obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o
obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o
obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o

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