From e75b810751108c60adad121a7c00e1febb8caa03 Mon Sep 17 00:00:00 2001
From: Darren Hsu <darrenhsu@google.com>
Date: Tue, 6 Feb 2024 19:53:30 +0800
Subject: [PATCH] powerstats: use legacy data provider if MRR sysfs doesn't
 exist

Bug: 323590299
Test: vts-tradefed run vts -m VtsHalPowerStatsTargetTest
Change-Id: Ia31814c852f173a56361a3df88b6d20a5475ee03
Signed-off-by: Darren Hsu <darrenhsu@google.com>
---
 powerstats/caiman/service.cpp | 32 +++++++++++++++++++++++++++++++-
 powerstats/komodo/service.cpp | 32 +++++++++++++++++++++++++++++++-
 2 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/powerstats/caiman/service.cpp b/powerstats/caiman/service.cpp
index 9228fead..3ed20dd5 100644
--- a/powerstats/caiman/service.cpp
+++ b/powerstats/caiman/service.cpp
@@ -26,6 +26,7 @@
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
 #include <log/log.h>
+#include <sys/stat.h>
 
 using aidl::android::hardware::power::stats::DisplayStateResidencyDataProvider;
 using aidl::android::hardware::power::stats::EnergyConsumerType;
@@ -33,7 +34,36 @@ using aidl::android::hardware::power::stats::PowerStatsEnergyConsumer;
 
 void addDisplay(std::shared_ptr<PowerStats> p) {
     // Add display residency stats
-    addDisplayMrr(p);
+    struct stat buffer;
+    if (!stat("/sys/class/drm/card0/device/primary-panel/time_in_state", &buffer)) {
+        // time_in_state exists
+        addDisplayMrr(p);
+    } else {
+        // time_in_state doesn't exist
+        std::vector<std::string> states = {
+            "Off",
+            "LP: 960x2142@1",
+            "LP: 960x2142@30",
+            "On: 960x2142@1",
+            "On: 960x2142@30",
+            "On: 960x2142@60",
+            "On: 960x2142@120",
+            "HBM: 960x2142@60",
+            "HBM: 960x2142@120",
+            "LP: 1280x2856@1",
+            "LP: 1280x2856@30",
+            "On: 1280x2856@1",
+            "On: 1280x2856@30",
+            "On: 1280x2856@60",
+            "On: 1280x2856@120",
+            "HBM: 1280x2856@60",
+            "HBM: 1280x2856@120"};
+
+        p->addStateResidencyDataProvider(std::make_unique<DisplayStateResidencyDataProvider>(
+                "Display",
+                "/sys/class/backlight/panel0-backlight/state",
+                states));
+    }
 
     // Add display energy consumer
     p->addEnergyConsumer(PowerStatsEnergyConsumer::createMeterConsumer(
diff --git a/powerstats/komodo/service.cpp b/powerstats/komodo/service.cpp
index 9228fead..2d873333 100644
--- a/powerstats/komodo/service.cpp
+++ b/powerstats/komodo/service.cpp
@@ -26,6 +26,7 @@
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
 #include <log/log.h>
+#include <sys/stat.h>
 
 using aidl::android::hardware::power::stats::DisplayStateResidencyDataProvider;
 using aidl::android::hardware::power::stats::EnergyConsumerType;
@@ -33,7 +34,36 @@ using aidl::android::hardware::power::stats::PowerStatsEnergyConsumer;
 
 void addDisplay(std::shared_ptr<PowerStats> p) {
     // Add display residency stats
-    addDisplayMrr(p);
+    struct stat buffer;
+    if (!stat("/sys/class/drm/card0/device/primary-panel/time_in_state", &buffer)) {
+        // time_in_state exists
+        addDisplayMrr(p);
+    } else {
+        // time_in_state doesn't exist
+        std::vector<std::string> states = {
+            "Off",
+            "LP: 1008x2244@1",
+            "LP: 1008x2244@30",
+            "On: 1008x2244@1",
+            "On: 1008x2244@30",
+            "On: 1008x2244@60",
+            "On: 1008x2244@120",
+            "HBM: 1008x2244@60",
+            "HBM: 1008x2244@120",
+            "LP: 1344x2992@1",
+            "LP: 1344x2992@30",
+            "On: 1344x2992@1",
+            "On: 1344x2992@30",
+            "On: 1344x2992@60",
+            "On: 1344x2992@120",
+            "HBM: 1344x2992@60",
+            "HBM: 1344x2992@120"};
+
+        p->addStateResidencyDataProvider(std::make_unique<DisplayStateResidencyDataProvider>(
+                "Display",
+                "/sys/class/backlight/panel0-backlight/state",
+                states));
+    }
 
     // Add display energy consumer
     p->addEnergyConsumer(PowerStatsEnergyConsumer::createMeterConsumer(