9d772afd6e
ALPM controls display LPM for AoD and should be controlled by Doze services, not by the user. Import AdaptiveBacklight from hardware_samsung to give proper control to the user. Change-Id: I51860027c4c4ae062945dd982f9ae69e1ba1cf2d
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/*
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* Copyright (C) 2024-2025 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 <android-base/file.h>
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#include <android-base/strings.h>
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#include <fstream>
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#include "AdaptiveBacklight.h"
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using android::base::ReadFileToString;
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using android::base::Trim;
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using android::base::WriteStringToFile;
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namespace vendor {
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namespace lineage {
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namespace livedisplay {
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namespace V2_0 {
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namespace samsung {
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static constexpr const char* kBacklightPath = "/sys/class/lcd/panel/power_reduce";
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bool AdaptiveBacklight::isSupported() {
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std::fstream backlight(kBacklightPath, backlight.in | backlight.out);
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return backlight.good();
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}
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// Methods from ::vendor::lineage::livedisplay::V2_0::IAdaptiveBacklight follow.
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Return<bool> AdaptiveBacklight::isEnabled() {
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std::string tmp;
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int32_t contents = 0;
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if (ReadFileToString(kBacklightPath, &tmp)) {
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contents = std::stoi(Trim(tmp));
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}
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return contents > 0;
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}
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Return<bool> AdaptiveBacklight::setEnabled(bool enabled) {
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return WriteStringToFile(enabled ? "1" : "0", kBacklightPath, true);
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}
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} // namespace samsung
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} // namespace V2_0
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} // namespace livedisplay
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} // namespace lineage
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} // namespace vendor
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