linux-kernel - [PATCH] arm64: dts: qcom: sdm845-oneplus-common: add Hall sensor

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Date:   Mon,  6 Mar 2023 18:41:47 +0100
From:   Gergo Koteles <soyer@....hu>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Gergo Koteles <soyer@....hu>
Subject: [PATCH] arm64: dts: qcom: sdm845-oneplus-common: add Hall sensor

Enable the Hall effect sensor (flip cover) for OnePlus 6/6T.
The GPIO is mapped to SW_LID events as in msm8916, msm8994,
msm8998 devices.

Signed-off-by: Gergo Koteles <soyer@....hu>
---
 .../boot/dts/qcom/sdm845-oneplus-common.dtsi  | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
index 64638ea94db7..b01542d79ae2 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-oneplus-common.dtsi
@@ -29,6 +29,23 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	gpio-hall-sensor {
+		compatible = "gpio-keys";
+		label = "Hall effect sensor";
+
+		pinctrl-0 = <&hall_sensor_default>;
+		pinctrl-names = "default";
+
+		event-hall-sensor {
+			gpios = <&tlmm 124 GPIO_ACTIVE_LOW>;
+			label = "Hall Effect Sensor";
+			linux,input-type = <EV_SW>;
+			linux,code = <SW_LID>;
+			linux,can-disable;
+			wakeup-source;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		label = "Volume keys";
@@ -753,6 +770,14 @@ &usb_1_hsphy {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;
 
+	hall_sensor_default: hall-sensor-default-state {
+		pins = "gpio124";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+		input-enable;
+	};
+
 	tri_state_key_default: tri-state-key-default-state {
 		pins = "gpio40", "gpio42", "gpio26";
 		function = "gpio";
-- 
2.39.2