From f2db0e370f9aa211f3769868abeedefe78a35a7f 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.

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 45c14e74..fe066683 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",