commit 2abc122f8854858a3da88161b749cab3f6586215
author Peter Liu <pingchienliu@google.com> Wed Jun 09 21:31:31 2021 -0700
committer Peter Liu <pingchienliu@google.com> Thu Jun 10 19:40:32 2021 +0000
tree 66b65ab103c3d1f8fdde3e6ca634944cd77b42ca
parent 2599bb6d295a4511bcbe9bc0c666e5969be7e5cd

camera power hint: add prefer high cap and prefer idle = 0 to top app

Prefer high cap and prefer idle is to optimize power and
trade off with scheduling latency.
Applying to app side does has no regression on frame drops.
And we can not apply prefer idle to hal process as it impact performance.

Bug: 190127212

Test:
1080p60: 20mW power saving, 59fps no regression
slow-mo 240fps: 239+fps

Change-Id: I548becbd2d6ccac8b576cfe54f9021bbf30b4801

powerhint.json

diff --git a/powerhint.json b/powerhint.json
index 6332199..d0797e3 100644
--- a/powerhint.json
+++ b/powerhint.json
@@ -145,6 +145,15 @@
       "ResetOnInit": true
     },
     {
+      "Name": "TAPreferIdle",
+      "Path": "/sys/kernel/vendor_sched/ta_prefer_idle",
+      "Values": [
+        "0",
+        "1"
+      ],
+      "ResetOnInit": true
+    },
+    {
       "Name": "CDPreferHighCap",
       "Path": "/sys/kernel/vendor_sched/cam_prefer_high_cap",
       "Values": [
@@ -492,6 +501,18 @@
       "Value": "20 10 80"
     },
     {
+      "PowerHint": "CAMERA_STREAMING_EXTREME",
+      "Node": "TAPreferHighCap",
+      "Duration": 0,
+      "Value": "1"
+    },
+    {
+      "PowerHint": "CAMERA_STREAMING_EXTREME",
+      "Node": "TAPreferIdle",
+      "Duration": 0,
+      "Value": "0"
+    },
+    {
       "PowerHint": "CAMERA_STREAMING_HIGH",
       "Node": "CPUUtilThreshold",
       "Duration": 0,
@@ -546,6 +567,18 @@
       "Value": "20 10 80"
     },
     {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "TAPreferHighCap",
+      "Duration": 0,
+      "Value": "1"
+    },
+    {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "TAPreferIdle",
+      "Duration": 0,
+      "Value": "0"
+    },
+    {
       "PowerHint": "CAMERA_STREAMING_STANDARD",
       "Node": "CDPreferHighCap",
       "Duration": 0,