mirror of
https://github.com/Evolution-X-Devices/device_google_wahoo
synced 2026-02-01 07:50:47 +00:00
ed713cf656
The code was only allowing the Learned Capacity to decrease while QCOM FG learned capacity may actually go up for some reasons. Ensure we use the FG learned capacity on update and always restore the saved one on boot. Bug: 109734601 Change-Id: I21b559c27a5298e8eea39ec502e4f1d6f7a4b053 Signed-off-by: Thierry Strudel <tstrudel@google.com>
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
|
|
* Copyright (C) 2018 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "LearnedCapacityBackupRestore.h"
|
|
|
|
namespace device {
|
|
namespace google {
|
|
namespace wahoo {
|
|
namespace health {
|
|
|
|
static constexpr char kChgFullFile[] = "sys/class/power_supply/bms/charge_full";
|
|
static constexpr char kSysCFPersistFile[] = "/persist/battery/qcom_charge_full";
|
|
static constexpr int kBuffSize = 256;
|
|
|
|
LearnedCapacityBackupRestore::LearnedCapacityBackupRestore() : sw_cap_(0), hw_cap_(0) {}
|
|
|
|
void LearnedCapacityBackupRestore::Restore() {
|
|
ReadFromStorage();
|
|
ReadFromSRAM();
|
|
if (sw_cap_ == 0) {
|
|
// First backup
|
|
sw_cap_ = hw_cap_;
|
|
SaveToStorage();
|
|
} else {
|
|
// Always restore backup value
|
|
SaveToSRAM();
|
|
}
|
|
}
|
|
|
|
void LearnedCapacityBackupRestore::Backup() {
|
|
ReadFromSRAM();
|
|
if (sw_cap_ != hw_cap_) {
|
|
// Always backup the new FG computed learned capacity
|
|
sw_cap_ = hw_cap_;
|
|
SaveToStorage();
|
|
}
|
|
}
|
|
|
|
void LearnedCapacityBackupRestore::ReadFromStorage() {
|
|
std::string buffer;
|
|
|
|
if (!android::base::ReadFileToString(std::string(kSysCFPersistFile), &buffer)) {
|
|
LOG(ERROR) << "Cannot read the storage file";
|
|
return;
|
|
}
|
|
|
|
if (sscanf(buffer.c_str(), "%d", &sw_cap_) < 1)
|
|
LOG(ERROR) << "data format is wrong in the storage file: " << buffer;
|
|
else
|
|
LOG(INFO) << "Storage data: " << buffer;
|
|
}
|
|
|
|
void LearnedCapacityBackupRestore::SaveToStorage() {
|
|
char strData[kBuffSize];
|
|
|
|
snprintf(strData, kBuffSize, "%d", sw_cap_);
|
|
|
|
LOG(INFO) << "Save to Storage: " << strData;
|
|
|
|
if (!android::base::WriteStringToFile(strData, std::string(kSysCFPersistFile)))
|
|
LOG(ERROR) << "Write file error: " << strerror(errno);
|
|
}
|
|
|
|
void LearnedCapacityBackupRestore::ReadFromSRAM() {
|
|
std::string buffer;
|
|
|
|
if (!android::base::ReadFileToString(std::string(kChgFullFile), &buffer)) {
|
|
LOG(ERROR) << "Read cycle counter error: " << strerror(errno);
|
|
return;
|
|
}
|
|
|
|
buffer = android::base::Trim(buffer);
|
|
|
|
if (sscanf(buffer.c_str(), "%d", &hw_cap_) < 1)
|
|
LOG(ERROR) << "Failed to parse SRAM bins: " << buffer;
|
|
else
|
|
LOG(INFO) << "SRAM data: " << buffer;
|
|
}
|
|
|
|
void LearnedCapacityBackupRestore::SaveToSRAM() {
|
|
char strData[kBuffSize];
|
|
|
|
snprintf(strData, kBuffSize, "%d", hw_cap_);
|
|
|
|
LOG(INFO) << "Save to SRAM: " << strData;
|
|
|
|
if (!android::base::WriteStringToFile(strData, std::string(kChgFullFile)))
|
|
LOG(ERROR) << "Write data error: " << strerror(errno);
|
|
}
|
|
|
|
} // namespace health
|
|
} // namespace wahoo
|
|
} // namespace google
|
|
} // namespace device
|