From 7bb4e1f1b3f3059176766467db1c26462af48dbf Mon Sep 17 00:00:00 2001
From: Peter Liu <pingchienliu@google.com>
Date: Wed, 19 May 2021 15:13:06 -0700
Subject: [PATCH] camera power hint: add prefer high cap in all modes

Prefer high cap will choose the mid / high cores when possible with
consideration of energy efficiency.

Running task on high cores with low clock is more efficient than running
at little core with high clock.

This hint also addresses CTS issues with keeping latency_sensitive = 1.
(equivalent to prefer idle)

This hint adds:
1) Enable prefer_high_cap of camera vendor group
2) Set high_capacity_start_cpu to 4
4) Set MemFreq floor
5) Change camera-daemon/cpu.uclamp.latency_sensitive owner to root

Bug: 186564130

Test:
android.hardware.camera2.cts.RobustnessTest#testAeAndAfCausality (5/5)
android.hardware.cts.CameraTest#testPreviewCallback (5/5)
android.hardware.camera2.cts.CameraDeviceTest#testCameraDeviceRepeatingBurst (5/5)
android.hardware.cts.CameraTest#testFocusDistances (3/6). (3/6) without CL.

*****************************************************************
              raven Camera CTS Test Results

*****************************************************************
Tests Passed: 217, Failed: 0, Not found: 0, Status unknown: 0

Change-Id: Ia2abb0eb9c57fa05c4db7bf1d02053e303301781
---
 conf/init.gs101.rc |  2 +-
 powerhint.json     | 64 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+), 1 deletion(-)

diff --git a/conf/init.gs101.rc b/conf/init.gs101.rc
index 8d54875e..79cfbe1b 100644
--- a/conf/init.gs101.rc
+++ b/conf/init.gs101.rc
@@ -137,7 +137,7 @@ on init
     # change permissions and default values for camera-daemon cpu controller
     chown system system /dev/cpuctl/camera-daemon/cpu.uclamp.min
     chown system system /dev/cpuctl/camera-daemon/cpu.uclamp.max
-    chown system system /dev/cpuctl/camera-daemon/cpu.uclamp.latency_sensitive
+    chown root root /dev/cpuctl/camera-daemon/cpu.uclamp.latency_sensitive
     chown system system /dev/cpuctl/camera-daemon/cgroup.procs
 
     write /sys/kernel/vendor_sched/cam_prefer_idle 1
diff --git a/powerhint.json b/powerhint.json
index a58a18b2..e95395bb 100644
--- a/powerhint.json
+++ b/powerhint.json
@@ -5,6 +5,7 @@
       "Path": "/sys/devices/platform/17000010.devfreq_mif/devfreq/17000010.devfreq_mif/min_freq",
       "Values": [
         "3172000",
+        "1014000",
         "421000"
       ],
       "ResetOnInit": true
@@ -115,6 +116,15 @@
       "DefaultIndex": 0,
       "ResetOnInit": true
     },
+    {
+      "Name": "CDPreferIdle",
+      "Path": "/sys/kernel/vendor_sched/cam_prefer_idle",
+      "Values": [
+        "0",
+        "1"
+      ],
+      "ResetOnInit": true
+    },
     {
       "Name": "F2fsRecessModeEnable",
       "Path": "/dev/sys/fs/by-name/userdata/gc_urgent",
@@ -124,6 +134,24 @@
       ],
       "ResetOnInit": true
     },
+    {
+      "Name": "CDPreferHighCap",
+      "Path": "/sys/kernel/vendor_sched/cam_prefer_high_cap",
+      "Values": [
+        "1",
+        "0"
+      ],
+      "ResetOnInit": true
+    },
+    {
+      "Name": "HighCapacityStartCpu",
+      "Path": "/sys/kernel/vendor_sched/high_capacity_start_cpu",
+      "Values": [
+        "4",
+        "6"
+      ],
+      "ResetOnInit": true
+    },
     {
       "Name": "DisplayWakeup",
       "Path": "/sys/devices/platform/1c300000.drmdecon/early_wakeup",
@@ -331,6 +359,18 @@
       "Duration": 0,
       "Value": "1826000"
     },
+    {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "CDPreferHighCap",
+      "Duration": 0,
+      "Value": "1"
+    },
+    {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "HighCapacityStartCpu",
+      "Duration": 0,
+      "Value": "4"
+    },
     {
       "PowerHint": "CAMERA_STREAMING_HIGH",
       "Node": "CPULittleClusterMaxFreq",
@@ -343,12 +383,30 @@
       "Duration": 0,
       "Value": "302000"
     },
+    {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "MemFreq",
+      "Duration": 0,
+      "Value": "1014000"
+    },
     {
       "PowerHint": "CAMERA_STREAMING_HIGH",
       "Node": "MIFTargetLoad",
       "Duration": 0,
       "Value": "20 10 80"
     },
+    {
+      "PowerHint": "CAMERA_STREAMING_STANDARD",
+      "Node": "CDPreferHighCap",
+      "Duration": 0,
+      "Value": "1"
+    },
+    {
+      "PowerHint": "CAMERA_STREAMING_STANDARD",
+      "Node": "HighCapacityStartCpu",
+      "Duration": 0,
+      "Value": "4"
+    },
     {
       "PowerHint": "CAMERA_STREAMING_STANDARD",
       "Node": "CPUBigClusterMaxFreq",
@@ -367,6 +425,12 @@
       "Duration": 0,
       "Value": "302000"
     },
+    {
+      "PowerHint": "CAMERA_STREAMING_STANDARD",
+      "Node": "MemFreq",
+      "Duration": 0,
+      "Value": "1014000"
+    },
     {
       "PowerHint": "CAMERA_STREAMING_STANDARD",
       "Node": "MIFTargetLoad",