display: Add hook for triggering screen update

DSI command mode panels do not need to be refreshed on each
vsync. Due to one frame latency in CABL LUT calculation, when CABL is
enabled for DSI command mode panels, the LUT doesnt get updated for last
frame. Triggering an extra update for DSI command mode panels fixes it.

Change-Id: I7a22e338609430746dda4d3081ff199109a95035

1 files changed, 24 insertions, 3 deletions

diff --git a/libqservice/IQService.cpp b/libqservice/IQService.cpp
index 7a88bdf4a..6c6f7b65e 100644
--- a/libqservice/IQService.cpp
+++ b/libqservice/IQService.cpp
@@ -63,6 +63,14 @@ public:
         data.writeStrongBinder(client->asBinder());
         remote()->transact(CONNECT, data, &reply);
     }
+
+    virtual status_t screenRefresh() {
+        Parcel data, reply;
+        data.writeInterfaceToken(IQService::getInterfaceDescriptor());
+        remote()->transact(SCREEN_REFRESH, data, &reply);
+        status_t result = reply.readInt32();
+        return result;
+    }
 };
 
 IMPLEMENT_META_INTERFACE(QService, "android.display.IQService");
@@ -88,7 +96,8 @@ status_t BnQService::onTransact(
     switch(code) {
         case SECURING: {
             if(!permission) {
-                ALOGE("display.qservice SECURING access denied: pid=%d uid=%d process=%s",
+                ALOGE("display.qservice SECURING access denied: \
+                      pid=%d uid=%d process=%s",
                       callerPid, callerUid, callingProcName);
                 return PERMISSION_DENIED;
             }
@@ -99,7 +108,8 @@ status_t BnQService::onTransact(
         } break;
         case UNSECURING: {
             if(!permission) {
-                ALOGE("display.qservice UNSECURING access denied: pid=%d uid=%d process=%s",
+                ALOGE("display.qservice UNSECURING access denied: \
+                      pid=%d uid=%d process=%s",
                       callerPid, callerUid, callingProcName);
                 return PERMISSION_DENIED;
             }
@@ -111,7 +121,8 @@ status_t BnQService::onTransact(
         case CONNECT: {
             CHECK_INTERFACE(IQService, data, reply);
             if(callerUid != AID_GRAPHICS) {
-                ALOGE("display.qservice CONNECT access denied: pid=%d uid=%d process=%s",
+                ALOGE("display.qservice CONNECT access denied: \
+                      pid=%d uid=%d process=%s",
                       callerPid, callerUid, callingProcName);
                 return PERMISSION_DENIED;
             }
@@ -120,6 +131,16 @@ status_t BnQService::onTransact(
             connect(client);
             return NO_ERROR;
         } break;
+        case SCREEN_REFRESH: {
+            CHECK_INTERFACE(IQService, data, reply);
+            if(callerUid != AID_GRAPHICS) {
+                ALOGE("display.qservice SCREEN_REFRESH access denied: \
+                      pid=%d uid=%d process=%s",callerPid,
+                      callerUid, callingProcName);
+                return PERMISSION_DENIED;
+            }
+            return screenRefresh();
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }