power: Add support for EXPENSIVE_RENDERING

When background_blur is enabled, the rendering can be expensive
and many janks will occur. So, need to support the mode in power
module and pass it to perf-hal to handle.

Change-Id: I5bab53e72134d76201d9fc28b9bdae4185790deb
CRs-Fixed: 3278491

Power.cpp

@@ -63,7 +63,6 @@ ndk::ScopedAStatus Power::setMode(Mode type, bool enabled) {
         case Mode::DOUBLE_TAP_TO_WAKE:
         case Mode::LOW_POWER:
         case Mode::LAUNCH:
-        case Mode::EXPENSIVE_RENDERING:
         case Mode::DEVICE_IDLE:
         case Mode::DISPLAY_INACTIVE:
         case Mode::AUDIO_STREAMING_LOW_LATENCY:
@@ -74,6 +73,9 @@ ndk::ScopedAStatus Power::setMode(Mode type, bool enabled) {
         case Mode::VR:
             LOG(INFO) << "Mode " << static_cast<int32_t>(type) << "Not Supported";
             break;
+        case Mode::EXPENSIVE_RENDERING:
+            set_expensive_rendering(enabled);
+            break;
         case Mode::INTERACTIVE:
             setInteractive(enabled);
             power_hint(POWER_HINT_INTERACTION, NULL);
@@ -93,6 +95,7 @@ ndk::ScopedAStatus Power::isModeSupported(Mode type, bool* _aidl_return) {
     LOG(INFO) << "Power isModeSupported: " << static_cast<int32_t>(type);
 
     switch(type){
+        case Mode::EXPENSIVE_RENDERING:
         case Mode::INTERACTIVE:
         case Mode::SUSTAINED_PERFORMANCE:
         case Mode::FIXED_PERFORMANCE:
@@ -121,4 +124,4 @@ ndk::ScopedAStatus Power::isBoostSupported(Boost type, bool* _aidl_return) {
 }  // namespace power
 }  // namespace hardware
 }  // namespace android
-}  // namespace aidl
+}  // namespace aidl

power-common.c

@@ -49,6 +49,7 @@
 #include "power-common.h"
 
 static struct hint_handles handles[NUM_HINTS];
+static int handleER = 0;
 
 void power_init()
 {
@@ -115,6 +116,15 @@ void power_hint(power_hint_t hint, void *data)
     }
 }
 
+void set_expensive_rendering(bool enabled)
+{
+    if (enabled) {
+        handleER = perf_hint_enable(PERF_HINT_EXPENSIVE_RENDERING, 0);
+    } else if (handleER > 0) {
+        release_request(handleER);
+    }
+}
+
 int __attribute__ ((weak)) set_interactive_override(int on)
 {
     return HINT_NONE;

power-common.h

@@ -49,6 +49,8 @@ extern "C" {
 #define HINT_HANDLED (0)
 #define HINT_NONE (-1)
 
+#define PERF_HINT_EXPENSIVE_RENDERING 0x000010A5
+
 #include <hardware/power.h>
 
 enum CPU_GOV_CHECK {
@@ -60,6 +62,7 @@ enum CPU_GOV_CHECK {
 
 void power_init(void);
 void power_hint(power_hint_t hint, void *data);
+void set_expensive_rendering(bool enabled);
 void set_interactive(int on);
 
 #ifdef __cplusplus