40 lines
922 B
C++
40 lines
922 B
C++
/*
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* Copyright (C) 2021-2022 The LineageOS Project
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "LED.h"
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#include "Utils.h"
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace light {
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static const uint32_t kDefaultMaxLedBrightness = 255;
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LED::LED(std::string type) : mBasePath("/sys/class/leds/" + type + "/") {
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if (!readFromFile(mBasePath + "max_brightness", &mMaxBrightness))
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mMaxBrightness = kDefaultMaxLedBrightness;
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mBreath = fileWriteable(mBasePath + "breath");
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}
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bool LED::exists() {
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return fileWriteable(mBasePath + "brightness");
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}
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bool LED::setBreath(uint8_t value) {
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return writeToFile(mBasePath + (mBreath ? "breath" : "blink"), value);
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}
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bool LED::setBrightness(uint8_t value) {
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return writeToFile(mBasePath + "brightness", value * mMaxBrightness / 0xFF);
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}
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} // namespace light
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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