From 9fa0863b13621e14face6a8e6a92d2e797890ca1 Mon Sep 17 00:00:00 2001
From: Peter Liu <pingchienliu@google.com>
Date: Mon, 17 May 2021 21:11:49 -0700
Subject: [PATCH] camera power hint: raise CPU clock more conservatively at
 STREAM_HIGH mode

During streaming high fps mode, the BW is high and lead to CPU memory
high latency. This hint tries to avoid raising the CPU clock
at the condition when CPU is waiting for data access.

(cherry-pick from device/google/gs101)
Bug: 205010238
Bug: 184583714
Test:
4k60: 59+fps
1080p60fps: 58fps (b/186806120, disable eis can get 60fps)
Power benefit 80-100mW

Signed-off-by: Peter Liu <pingchienliu@google.com>
Change-Id: I3849dfd170085f7e10b5c53d27af353026a4093a
---
 powerhint.json | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/powerhint.json b/powerhint.json
index ac0500a7..267e3f01 100644
--- a/powerhint.json
+++ b/powerhint.json
@@ -83,6 +83,16 @@
       ],
       "ResetOnInit": true
     },
+    {
+      "Name": "CPUUtilThreshold",
+      "Path": "/sys/kernel/vendor_sched/util_threshold",
+      "Values": [
+        "1280",
+        "1100"
+      ],
+      "DefaultIndex": 0,
+      "ResetOnInit": true
+    },
     {
       "Name": "MIFTargetLoad",
       "Path": "/sys/class/devfreq/17000010.devfreq_mif/interactive/target_load",
@@ -337,6 +347,12 @@
       "Duration": 1000,
       "Value": "9999999"
     },
+    {
+      "PowerHint": "CAMERA_STREAMING_HIGH",
+      "Node": "CPUUtilThreshold",
+      "Duration": 0,
+      "Value": "1100"
+    },
     {
       "PowerHint": "CAMERA_STREAMING_HIGH",
       "Node": "CPUBigClusterMaxFreq",