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 constexpr char kTouchVRModeSysfs[] = "/sys/devices/virtual/input/ftm4_touch/vrmode";
33
VrDevice()34 VrDevice::VrDevice() : mVRmode(false) {
35 std::string hardware = android::base::GetProperty("ro.hardware", "");
36 if (hardware == "taimen") {
37 mFtm4Touch = true;
38 } else {
39 mFtm4Touch = false;
40 }
41 }
42
init()43 Return<void> VrDevice::init() {
44 // NOOP
45 return Void();
46 }
47
setVrMode(bool enabled)48 Return<void> VrDevice::setVrMode(bool enabled) {
49 mVRmode = enabled;
50 if (enabled) {
51 if (!android::base::SetProperty("sys.qcom.thermalcfg",
52 "/vendor/etc/thermal-engine-vr.conf")) {
53 LOG(ERROR) << "Couldn't set thermal_engine enable property";
54 return Void();
55 }
56 } else {
57 if (!android::base::SetProperty("sys.qcom.thermalcfg",
58 "/vendor/etc/thermal-engine.conf")) {
59 LOG(ERROR) << "Couldn't set thermal_engine disable property";
60 return Void();
61 }
62 }
63 if (!android::base::SetProperty("ctl.restart", "vendor.thermal-engine")) {
64 LOG(ERROR) << "Couldn't set thermal_engine restart property";
65 }
66
67 if (mFtm4Touch &&
68 !android::base::WriteStringToFile((enabled ? "1" : "0"), kTouchVRModeSysfs)) {
69 PLOG(ERROR) << "Failed to write to vrmode sysfs node with :" << enabled;
70 }
71
72 return Void();
73 }
74
debug(const hidl_handle & handle,const hidl_vec<hidl_string> &)75 Return<void> VrDevice::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
76 if (handle != nullptr && handle->numFds >= 1) {
77 int fd = handle->data[0];
78 std::string buf(android::base::StringPrintf("VRMode: %s\n",
79 (mVRmode ? "true" : "false")));
80 if (!android::base::WriteStringToFd(buf, fd)) {
81 PLOG(ERROR) << "Failed to dump state to fd";
82 }
83 fsync(fd);
84 }
85 return Void();
86 }
87
88 } // namespace implementation
89 } // namespace V1_0
90 } // namespace vr
91 } // namespace hardware
92 } // namespace android
93