arm64: dts: qcom: msm8994-octagon: Add gpio-keys and Hall sensor

This enables tje hardware keys as well as the Hall sensor.
Signed-off-by: Gustave Monce <gustave.monce@outlook.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210131013853.55810-8-konrad.dybcio@somainline.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi

@@ -9,6 +9,9 @@
 
 #include "pm8994.dtsi"
 #include "pmi8994.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/gpio-keys.h>
+#include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 
 /*
  * Delete all generic (msm8994.dtsi) reserved
@@ -42,6 +45,64 @@ chosen {
 		ranges;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+		input-name = "gpio-keys";
+		autorepeat;
+
+		volupkey {
+			label = "Volume Up";
+			gpios = <&pm8994_gpios 3 GPIO_ACTIVE_LOW>;
+			linux,input-type = <1>;
+			linux,code = <KEY_VOLUMEUP>;
+			wakeup-source;
+			debounce-interval = <15>;
+		};
+
+		camsnapkey {
+			label = "Camera Snapshot";
+			gpios = <&pm8994_gpios 4 GPIO_ACTIVE_LOW>;
+			linux,input-type = <1>;
+			linux,code = <KEY_CAMERA>;
+			wakeup-source;
+			debounce-interval = <15>;
+		};
+
+		camfocuskey {
+			label = "Camera Focus";
+			gpios = <&pm8994_gpios 5 GPIO_ACTIVE_LOW>;
+			linux,input-type = <1>;
+			linux,code = <KEY_VOLUMEUP>;
+			wakeup-source;
+			debounce-interval = <15>;
+		};
+	};
+
+	gpio-hall-sensor {
+		compatible = "gpio-keys";
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&hall_front_default &hall_back_default>;
+
+		label = "GPIO Hall Effect Sensor";
+
+		hall-front-sensor {
+			label = "Hall Effect Front Sensor";
+			gpios = <&tlmm 42 GPIO_ACTIVE_HIGH>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			linux,can-disable;
+		};
+
+		hall-back-sensor {
+			label = "Hall Effect Back Sensor";
+			gpios = <&tlmm 75 GPIO_ACTIVE_HIGH>;
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_MACHINE_COVER>;
+			linux,can-disable;
+		};
+	};
+
 	reserved-memory {
 		/*
 		 * This device being a WP platform has a very different
@@ -235,3 +296,19 @@ &blsp2_uart2 {
 &sdhc1 {
 	status = "okay";
 };
+
+&tlmm {
+	hall_front_default: hall-front-default {
+		pins = "gpio42";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	hall_back_default: hall-back-default {
+		pins = "gpio75";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+};