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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "VrDevice"
     18 
     19 #include <android-base/file.h>
     20 #include <android-base/logging.h>
     21 #include <android-base/properties.h>
     22 #include <android-base/stringprintf.h>
     23 
     24 #include "VrDevice.h"
     25 
     26 namespace android {
     27 namespace hardware {
     28 namespace vr {
     29 namespace V1_0 {
     30 namespace implementation {
     31 
     32 VrDevice::VrDevice() : mVRmode(false) {}
     33 
     34 Return<void> VrDevice::init() {
     35     // NOOP
     36     return Void();
     37 }
     38 
     39 Return<void> VrDevice::setVrMode(bool enabled) {
     40     std::string hwProp = android::base::GetProperty("ro.hardware", "default");
     41     std::string vrMode = enabled ? "-vr" : "";
     42     std::string thermalConf = "/vendor/etc/thermal-engine-" + hwProp + vrMode + ".conf";
     43     mVRmode = enabled;
     44 
     45     if (!android::base::SetProperty("vendor.sys.qcom.thermalcfg", thermalConf)) {
     46         LOG(ERROR) << "Couldn't set vendor.sys.qcom.thermalcfg to " << thermalConf;
     47         return Void();
     48     }
     49     if (!android::base::SetProperty("ctl.restart", "vendor.thermal-engine")) {
     50         LOG(ERROR) << "Couldn't set thermal_engine restart property";
     51     }
     52     return Void();
     53 }
     54 
     55 Return<void> VrDevice::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
     56     if (handle != nullptr && handle->numFds >= 1) {
     57         int fd = handle->data[0];
     58         std::string buf(android::base::StringPrintf("VRMode: %s\n",
     59                                                     (mVRmode ? "true" : "false")));
     60         if (!android::base::WriteStringToFd(buf, fd)) {
     61             PLOG(ERROR) << "Failed to dump state to fd";
     62         }
     63         fsync(fd);
     64     }
     65     return Void();
     66 }
     67 
     68 }  // namespace implementation
     69 }  // namespace V1_0
     70 }  // namespace vr
     71 }  // namespace hardware
     72 }  // namespace android
     73