From 2a042c184fe27d8bcd3f8d0e55fb0163f85d2623 Mon Sep 17 00:00:00 2001
From: Pierre-Hugues Husson <phh@phh.me>
Date: Fri, 28 Sep 2018 20:15:45 +0200
Subject: [PATCH] Add "lightctl" tool to debug light HAL from root adb

---
 cmds/Android.bp    | 11 +++++++++
 cmds/lightsctl.cpp | 59 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 cmds/Android.bp
 create mode 100644 cmds/lightsctl.cpp

diff --git a/cmds/Android.bp b/cmds/Android.bp
new file mode 100644
index 0000000..c87a1fe
--- /dev/null
+++ b/cmds/Android.bp
@@ -0,0 +1,11 @@
+cc_binary {
+	name: "lightsctl",
+	srcs: [
+		"lightsctl.cpp",
+	],
+	shared_libs: [
+		"android.hardware.light@2.0",
+		"libutils",
+		"libhidlbase",
+	],
+}
diff --git a/cmds/lightsctl.cpp b/cmds/lightsctl.cpp
new file mode 100644
index 0000000..2d992ac
--- /dev/null
+++ b/cmds/lightsctl.cpp
@@ -0,0 +1,59 @@
+#include <iostream>
+#include <android/hardware/light/2.0/ILight.h>
+#include <android/hardware/light/2.0/types.h>
+
+using ::android::hardware::light::V2_0::ILight;
+using ::android::sp;
+
+int main(int argc, char **argv) {
+	auto svc = ILight::getService();
+	svc->getSupportedTypes([](auto types) {
+		for(const auto& type: types) {
+			std::cout << "Got type " << toString(type) << std::endl;
+		}
+	});
+	if(argc <= 1) return 0;
+	if(argc != 3 && argc != 6) return 1;
+
+	std::string typeArg(argv[1]);
+	android::hardware::light::V2_0::Type type;
+	if(typeArg == "BACKLIGHT")
+		type = android::hardware::light::V2_0::Type::BACKLIGHT;
+	if(typeArg == "KEYBOARD")
+		type = android::hardware::light::V2_0::Type::KEYBOARD;
+	if(typeArg == "BUTTONS")
+		type = android::hardware::light::V2_0::Type::BUTTONS;
+	if(typeArg == "BATTERY")
+		type = android::hardware::light::V2_0::Type::BATTERY;
+	if(typeArg == "NOTIFICATIONS")
+		type = android::hardware::light::V2_0::Type::NOTIFICATIONS;
+	if(typeArg == "ATTENTION")
+		type = android::hardware::light::V2_0::Type::ATTENTION;
+	if(typeArg == "BLUETOOTH")
+		type = android::hardware::light::V2_0::Type::BLUETOOTH;
+	if(typeArg == "WIFI")
+		type = android::hardware::light::V2_0::Type::WIFI;
+	std::cout << "Set request type " << toString(type) << std::endl;
+
+	android::hardware::light::V2_0::LightState state;
+	state.color = (uint32_t)strtoll(argv[2], NULL, 16);
+	state.flashMode = android::hardware::light::V2_0::Flash::NONE;
+	state.brightnessMode = android::hardware::light::V2_0::Brightness::USER;
+
+	if(argc == 6) {
+		std::string flashArg(argv[3]);
+		if(flashArg == "NONE")
+			state.flashMode = android::hardware::light::V2_0::Flash::NONE;
+		if(flashArg == "TIMED")
+			state.flashMode = android::hardware::light::V2_0::Flash::TIMED;
+		if(flashArg == "HARDWARE")
+			state.flashMode = android::hardware::light::V2_0::Flash::HARDWARE;
+
+		state.flashOnMs = atoi(argv[4]);
+		state.flashOffMs = atoi(argv[5]);
+	}
+	std::cout << "Set flash type to " << toString(state.flashMode) << std::endl;
+
+	auto ret = svc->setLight(type, state);
+	std::cout << "Set light returned " << toString(ret) << std::endl;
+}