ARM: dts: Add trackpad to exynos5250-spring

The HP Chromebook 11 uses an Atmel maXTouch as trackpad.
The keymap was found by trial-and-error.

Signed-off-by: Andreas Faerber <afaerber@suse.de>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts
index cc3361afba497a8c087047cda2afd6616761a567..f02775487cd4d3d20925afb84da693f92ad13e1e 100644 (file)
--- a/arch/arm/boot/dts/exynos5250-spring.dts
+++ b/arch/arm/boot/dts/exynos5250-spring.dts
@@ -330,6 +330,22 @@
        status = "okay";
        samsung,i2c-sda-delay = <100>;
        samsung,i2c-max-bus-freq = <378000>;
+
+       trackpad@4b {
+               compatible = "atmel,maxtouch";
+               reg = <0x4b>;
+               interrupt-parent = <&gpx1>;
+               interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&trackpad_irq>;
+               linux,gpio-keymap = <KEY_RESERVED
+                                    KEY_RESERVED
+                                    KEY_RESERVED
+                                    KEY_RESERVED
+                                    KEY_RESERVED
+                                    BTN_LEFT>;
+               wakeup-source;
+       };
 };
 
 /*
@@ -465,6 +481,13 @@
                samsung,pin-drv = <0>;
        };
 
+       trackpad_irq: trackpad-irq {
+               samsung,pins = "gpx1-2";
+               samsung,pin-function = <0xf>;
+               samsung,pin-pud = <0>;
+               samsung,pin-drv = <0>;
+       };
+
        power_key_irq: power-key-irq {
                samsung,pins = "gpx1-3";
                samsung,pin-function = <0>;