From 6eb815289a3794264eee597c2daa311e051ff6fc Mon Sep 17 00:00:00 2001
From: Nikita Travkin <nikitos.tr@gmail.com>
Date: Fri, 13 Nov 2020 22:59:13 +0500
Subject: arm64: dts: msm8916-longcheer-l8150: Add touchscreen

L8150 has RMI4 compatible Synaptics touchscreen on
blsp_i2c5. It is powered by fixed regulator. Add
both to the device tree.

Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Link: https://lore.kernel.org/r/20201113175917.189123-2-nikitos.tr@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 .../boot/dts/qcom/msm8916-longcheer-l8150.dts      | 63 ++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
index d106bdbfda68..21f2e8e0d05e 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
+++ b/arch/arm64/boot/dts/qcom/msm8916-longcheer-l8150.dts
@@ -5,6 +5,7 @@
 #include "msm8916-pm8916.dtsi"
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	model = "Longcheer L8150";
@@ -50,6 +51,52 @@
 			linux,code = <KEY_VOLUMEUP>;
 		};
 	};
+
+	reg_ctp: regulator-ctp {
+		compatible = "regulator-fixed";
+		regulator-name = "ctp";
+
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+
+		gpio = <&msmgpio 17 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&ctp_pwr_en_default>;
+	};
+};
+
+&blsp_i2c5 {
+	status = "okay";
+
+	rmi4@20 {
+		compatible = "syna,rmi4-i2c";
+		reg = <0x20>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		interrupt-parent = <&msmgpio>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		vdd-supply = <&reg_ctp>;
+		vio-supply = <&pm8916_l6>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&tp_int_default>;
+
+		syna,startup-delay-ms = <10>;
+
+		rmi4-f01@1 {
+			reg = <0x1>;
+			syna,nosleep-mode = <1>; // Allow sleeping
+		};
+
+		rmi4-f12@12 {
+			reg = <0x12>;
+			syna,sensor-type = <1>; // Touchscreen
+		};
+	};
 };
 
 &blsp1_uart2 {
@@ -201,6 +248,14 @@
 };
 
 &msmgpio {
+	ctp_pwr_en_default: ctp-pwr-en-default {
+		pins = "gpio17";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_keys_default: gpio-keys-default {
 		pins = "gpio107";
 		function = "gpio";
@@ -209,6 +264,14 @@
 		bias-pull-up;
 	};
 
+	tp_int_default: tp-int-default {
+		pins = "gpio13";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	usb_vbus_default: usb-vbus-default {
 		pins = "gpio62";
 		function = "gpio";
-- 
cgit 1.4.1