linux-kernel - [PATCH v2 3/6] ARM: dts: samsung: exynos4212-tab3: Fix headset mic, add jack detection

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Message-Id: <20240725-midas-audio-tab3-v2-3-dbc055c27879@gmail.com>
Date: Thu, 25 Jul 2024 12:40:37 +0200
From: Artur Weber <aweber.kernel@...il.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-sound@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht, 
 Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH v2 3/6] ARM: dts: samsung: exynos4212-tab3: Fix headset
 mic, add jack detection

Set up headset mic bias regulator and add the necessary properties to
the samsung,midas-audio node to allow for headset jack detection.

Signed-off-by: Artur Weber <aweber.kernel@...il.com>
---
Changes in v2:
- Move headset-mic-bias-supply property next to other headset properties
---
 arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
index 9bc05961577d..bbafd4ece5f7 100644
--- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi
@@ -300,12 +300,31 @@ submic_bias_reg: voltage-regulator-5 {
 		regulator-max-microvolt = <2800000>;
 	};
 
+	earmic_bias_reg: voltage-regulator-6 {
+		compatible = "regulator-fixed";
+		regulator-name = "EAR_MICBIAS_LDO_2.8V";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		gpio = <&gpm0 0 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	sound: sound {
 		compatible = "samsung,midas-audio";
 		model = "TAB3";
 		mic-bias-supply = <&mic_bias_reg>;
 		submic-bias-supply = <&submic_bias_reg>;
 
+		lineout-sel-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>;
+
+		headset-mic-bias-supply = <&earmic_bias_reg>;
+		headset-detect-gpios = <&gpx0 4 GPIO_ACTIVE_LOW>;
+		headset-key-gpios = <&gpx3 6 GPIO_ACTIVE_LOW>;
+		samsung,headset-4pole-threshold-microvolt = <710 2000>;
+		samsung,headset-button-threshold-microvolt = <0 130 260>;
+		io-channel-names = "headset-detect";
+		io-channels = <&adc 0>;
+
 		audio-routing = "HP", "HPOUT1L",
 				"HP", "HPOUT1R",
 
@@ -351,6 +370,11 @@ wlan_pwrseq: sdhci3-pwrseq {
 	};
 };
 
+&adc {
+	vdd-supply = <&ldo3_reg>;
+	status = "okay";
+};
+
 &bus_acp {
 	devfreq = <&bus_dmc>;
 	status = "okay";

-- 
2.45.2