linux-kernel - [PATCH 1/3] ARM: dts: msm8974-FP2: Add support for touchscreen

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Message-Id: <20220421214243.352469-1-luca@z3ntu.xyz>
Date:   Thu, 21 Apr 2022 23:42:41 +0200
From:   Luca Weiss <luca@...tu.xyz>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Luca Weiss <luca@...tu.xyz>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] ARM: dts: msm8974-FP2: Add support for touchscreen

Configure the touchscreen found on the new display module of the FP2.
To add some detail, FP2 has two different screen/touchscreen variants
("display module"), the old module has Synaptics touchscreen, the new
one this Ilitek touchscreen.

We're only supporting the new display module for now.

Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
 .../boot/dts/qcom-msm8974pro-fairphone-fp2.dts    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-msm8974pro-fairphone-fp2.dts b/arch/arm/boot/dts/qcom-msm8974pro-fairphone-fp2.dts
index 96427d75ea82..8f07d8e363aa 100644
--- a/arch/arm/boot/dts/qcom-msm8974pro-fairphone-fp2.dts
+++ b/arch/arm/boot/dts/qcom-msm8974pro-fairphone-fp2.dts
@@ -57,6 +57,21 @@ vibrator {
 	};
 };
 
+&blsp1_i2c2 {
+	status = "okay";
+
+	touchscreen@41 {
+		compatible = "ilitek,ili2120";
+		reg = <0x41>;
+		interrupt-parent = <&tlmm>;
+		interrupts = <28 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&tlmm 55 GPIO_ACTIVE_LOW>;
+
+		touchscreen-size-x = <1080>;
+		touchscreen-size-y = <1920>;
+	};
+};
+
 &blsp1_uart2 {
 	status = "okay";
 };
-- 
2.36.0