1 /*
2 * Copyright (C) 2023 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 #include "DisplayMrrStateResidencyDataProvider.h"
17
18 #include <android-base/logging.h>
19 #include <android-base/parseint.h>
20 #include <android-base/strings.h>
21
22 using android::base::ParseInt;
23 using android::base::ParseUint;
24 using android::base::Split;
25 using android::base::Trim;
26
27 static const std::string TIME_IN_STATE = "time_in_state";
28 static const std::string AVAILABLE_STATE = "available_disp_stats";
29 static const std::vector<std::string> DISP_STATE = { "On", "HBM", "LP", "Off" };
30
31 namespace aidl {
32 namespace android {
33 namespace hardware {
34 namespace power {
35 namespace stats {
36
DisplayMrrStateResidencyDataProvider(const std::string & name,const std::string & path)37 DisplayMrrStateResidencyDataProvider::DisplayMrrStateResidencyDataProvider(
38 const std::string& name, const std::string& path) : mName(name), mPath(path) {
39 mConfigs = std::vector<Config>();
40 std::string statePath = mPath + AVAILABLE_STATE;
41 std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(statePath.c_str(), "r"), fclose);
42 if (fp) {
43 char *line = nullptr;
44 size_t len = 0;
45 Config config = { .state = 0, .resX = 0, .resY = 0, .rr = 0 };
46 while (getline(&line, &len, fp.get()) != -1) {
47 if (parseAvailableState(line, &config)) {
48 mConfigs.push_back(config);
49 } else {
50 PLOG(ERROR) << "Failed to parse display config for [" << std::string(line)
51 << "] from " << statePath;
52 mConfigs.clear();
53 break;
54 }
55 }
56 free(line);
57 } else {
58 PLOG(ERROR) << "Failed to open file " << statePath;
59 }
60 }
61
parseConfig(char const * line,Config * config,uint64_t * duration)62 bool DisplayMrrStateResidencyDataProvider::parseConfig(
63 char const *line, Config *config, uint64_t *duration) {
64 std::vector<std::string> parts = Split(line, " ");
65
66 if (duration == nullptr) {
67 if (parts.size() != 4) return false;
68 } else {
69 if (parts.size() != 5) return false;
70
71 if (!ParseUint(Trim(parts[4]), duration)) return false;
72 }
73
74 if (!ParseInt(Trim(parts[0]), &config->state)) return false;
75 if (!ParseInt(Trim(parts[1]), &config->resX)) return false;
76 if (!ParseInt(Trim(parts[2]), &config->resY)) return false;
77 if (!ParseInt(Trim(parts[3]), &config->rr)) return false;
78
79 return true;
80 }
81
parseAvailableState(char const * line,Config * config)82 bool DisplayMrrStateResidencyDataProvider::parseAvailableState(
83 char const *line, Config *config) {
84 return parseConfig(line, config, nullptr);
85 }
86
parseTimeInState(char const * line,Config * config,uint64_t * duration)87 bool DisplayMrrStateResidencyDataProvider::parseTimeInState(
88 char const *line, Config *config, uint64_t *duration) {
89 return parseConfig(line, config, duration);
90 }
91
getStateResidencies(std::unordered_map<std::string,std::vector<StateResidency>> * residencies)92 bool DisplayMrrStateResidencyDataProvider::getStateResidencies(
93 std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
94 if (mConfigs.empty()) {
95 LOG(ERROR) << "Display MRR state list is empty!";
96 return false;
97 }
98
99 std::string path = mPath + TIME_IN_STATE;
100 std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(path.c_str(), "r"), fclose);
101 if (!fp) {
102 PLOG(ERROR) << "Failed to open file " << path;
103 return false;
104 }
105
106 std::vector<StateResidency> stateResidencies;
107 for (int i = 0; i < mConfigs.size(); i++) {
108 StateResidency s = {.id = i, .totalTimeInStateMs = 0};
109 stateResidencies.push_back(s);
110 }
111
112 char *line = nullptr;
113 size_t len = 0;
114 Config config = { .state = 0, .resX = 0, .resY = 0, .rr = 0 };
115 uint64_t duration;
116 std::vector<Config>::const_iterator found;
117 while (getline(&line, &len, fp.get()) != -1) {
118 if (parseTimeInState(line, &config, &duration)) {
119 found = std::find(mConfigs.begin(), mConfigs.end(), config);
120 if (found != mConfigs.end()) {
121 stateResidencies[found - mConfigs.begin()].totalTimeInStateMs = duration;
122 } else {
123 LOG(ERROR) << "Failed to find config for [" << std::string(line)
124 << "] in display MRR state list";
125 }
126 } else {
127 LOG(ERROR) << "Failed to parse state and duration from [" << std::string(line) << "]";
128 free(line);
129 return false;
130 }
131 }
132
133 residencies->emplace(mName, stateResidencies);
134
135 free(line);
136
137 return true;
138 }
139
getInfo()140 std::unordered_map<std::string, std::vector<State>> DisplayMrrStateResidencyDataProvider::getInfo()
141 {
142 int32_t dispId;
143 std::string name;
144 std::vector<State> states;
145 for (int32_t id = 0; id < mConfigs.size(); id++) {
146 dispId = mConfigs[id].state;
147 if (dispId >= DISP_STATE.size()) {
148 LOG(ERROR) << "Display state id " << dispId << " is out of bound";
149 return {};
150 }
151
152 name = DISP_STATE[dispId];
153 if (dispId != DISP_STATE.size() - 1) {
154 name += ": " + std::to_string(mConfigs[id].resX) +
155 "x" + std::to_string(mConfigs[id].resY) +
156 "@" + std::to_string(mConfigs[id].rr);
157 }
158 State s = { .id = id, .name = name };
159 states.push_back(s);
160 }
161
162 return {{ mName, states }};
163 }
164
165 } // namespace stats
166 } // namespace power
167 } // namespace hardware
168 } // namespace android
169 } // namespace aidl
170