/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fastboot/Fastboot.h"
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <android-base/strings.h>
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#include <android-base/unique_fd.h>
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namespace android {
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namespace hardware {
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namespace fastboot {
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namespace V1_0 {
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namespace implementation {
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constexpr const char* BRIGHTNESS_FILE = "/sys/class/backlight/panel0-backlight/brightness";
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constexpr int DISPLAY_BRIGHTNESS_DIM_THRESHOLD = 20;
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using OEMCommandHandler = std::function<Result(const std::vector<std::string>&)>;
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Return<void> Fastboot::getPartitionType(const ::android::hardware::hidl_string& /* partitionName */,
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getPartitionType_cb _hidl_cb) {
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// For bluecross devices, all partitions need to return raw.
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_hidl_cb(FileSystemType::RAW, { Status::SUCCESS, "" });
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return Void();
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}
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Return<void> Fastboot::getVariant(getVariant_cb _hidl_cb) {
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_hidl_cb("MSM USF", {Status::SUCCESS, "" });
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return Void();
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}
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Return<void> Fastboot::getOffModeChargeState(getOffModeChargeState_cb _hidl_cb) {
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constexpr const char* kDevinfoPath = "/dev/block/by-name/devinfo";
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constexpr int kDevInfoOffModeChargeOffset = 15;
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uint8_t off_mode_charge_status = 0;
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android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(kDevinfoPath,
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O_RDONLY | O_BINARY)));
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if (!android::base::ReadFullyAtOffset(fd, &off_mode_charge_status, 1 /* byte count */,
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kDevInfoOffModeChargeOffset)) {
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_hidl_cb(false,
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{ Status::FAILURE_UNKNOWN, "Unable to read off-mode-charge state" });
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} else {
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_hidl_cb(off_mode_charge_status != 0, { Status::SUCCESS, "" });
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}
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return Void();
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}
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Return<void> Fastboot::getBatteryVoltageFlashingThreshold(
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getBatteryVoltageFlashingThreshold_cb _hidl_cb) {
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constexpr int kMinVoltageForFlashing = 3500;
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_hidl_cb(kMinVoltageForFlashing, { Status::SUCCESS, "" });
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return Void();
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}
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Result SetBrightnessLevel(const std::vector<std::string>& args) {
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if (!args.size()) {
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return { Status::INVALID_ARGUMENT, "Brightness level unspecified" };
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}
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auto level = std::stoi(args[0]);
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if (level < 0 || level > 100) {
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return { Status::INVALID_ARGUMENT, "Brighness level must be between 0 and 100" };
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}
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// Avoid screen being dimmed too much.
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if (level < DISPLAY_BRIGHTNESS_DIM_THRESHOLD) {
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level = DISPLAY_BRIGHTNESS_DIM_THRESHOLD;
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}
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if (android::base::WriteStringToFile(std::to_string(level), BRIGHTNESS_FILE)) {
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return { Status::SUCCESS, "" };
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}
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return { Status::FAILURE_UNKNOWN, "Unable to set display brightness" };
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}
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Return<void> Fastboot::doOemCommand(const ::android::hardware::hidl_string& oemCmdArgs,
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doOemCommand_cb _hidl_cb) {
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const std::unordered_map<std::string, OEMCommandHandler> kOEMCmdMap = {
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{FB_OEM_SET_BRIGHTNESS, SetBrightnessLevel},
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};
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auto args = android::base::Split(oemCmdArgs, " ");
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if (args.size() < 2) {
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_hidl_cb({ Status::INVALID_ARGUMENT, "Invalid OEM command" });
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return Void();
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}
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// args[0] will be "oem", args[1] will be the command name
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auto cmd_handler = kOEMCmdMap.find(args[1]);
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if (cmd_handler != kOEMCmdMap.end()) {
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_hidl_cb(cmd_handler->second(std::vector<std::string>(args.begin() + 2, args.end())));
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} else {
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_hidl_cb({ Status::FAILURE_UNKNOWN, "Unknown OEM command" });
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}
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return Void();
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}
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Fastboot::Fastboot() {}
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// Methods from ::android::hidl::base::V1_0::IBase follow.
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extern "C" IFastboot* HIDL_FETCH_IFastboot(const char* /* name */) {
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return new Fastboot();
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace fastboot
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} // namespace hardware
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} // namespace android
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