linux-kernel - [PATCH v1 2/2] arm64: dts: qcom: msm8916-alcatel-idol347: add LED indicator

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Date:   Sat, 29 Oct 2022 16:55:57 +0200
From:   Vincent Knecht <vincent.knecht@...loo.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Vincent Knecht <vincent.knecht@...loo.org>
Subject: [PATCH v1 2/2] arm64: dts: qcom: msm8916-alcatel-idol347: add LED indicator

Add si-en,sn3190 LED controller to enable white LED indicator.

This requires adding the additional "enable" gpio that the OEM
choose to use, despite it not being mentioned in si-en,sn3190
datasheet nor supported by the driver.

Signed-off-by: Vincent Knecht <vincent.knecht@...loo.org>
---
 .../boot/dts/qcom/msm8916-alcatel-idol347.dts | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts b/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
index 3a0a593899ae..952ae092e6ae 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-alcatel-idol347.dts
@@ -130,6 +130,27 @@ gyroscope@68 {
 	};
 };
 
+&blsp_i2c6 {
+	status = "okay";
+
+	led-controller@68 {
+		compatible = "si-en,sn3190";
+		reg = <0x68>;
+		shutdown-gpios = <&msmgpio 89 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&led_enable_default &led_shutdown_default>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		led@1 {
+			reg = <1>;
+			led-max-microamp = <5000>;
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_WHITE>;
+		};
+	};
+};
+
 &pm8916_resin {
 	status = "okay";
 	linux,code = <KEY_VOLUMEDOWN>;
@@ -306,6 +327,29 @@ gyro_int_default: gyro-int-default {
 		bias-disable;
 	};
 
+	/*
+	 * The OEM wired an additional GPIO to be asserted so that
+	 * the si-en,sn3190 LED IC works. Since this GPIO is not
+	 * part of the IC datasheet nor supported by the driver,
+	 * force it asserted here.
+	 */
+	led_enable_default: led-enable-default {
+		pins = "gpio102";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+		output-high;
+	};
+
+	led_shutdown_default: led-shutdown-default {
+		pins = "gpio89";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	mag_reset_default: mag-reset-default {
 		pins = "gpio8";
 		function = "gpio";
-- 
2.37.3