From 2abc122f8854858a3da88161b749cab3f6586215 Mon Sep 17 00:00:00 2001
From: Peter Liu <pingchienliu@google.com>
Date: Wed, 9 Jun 2021 21:31:31 -0700
Subject: [PATCH] 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 | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/powerhint.json b/powerhint.json
index 63321995..d0797e3c 100644
--- a/powerhint.json
+++ b/powerhint.json
@@ -144,6 +144,15 @@
       ],
       "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",
@@ -491,6 +500,18 @@
       "Duration": 0,
       "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",
@@ -545,6 +566,18 @@
       "Duration": 0,
       "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",