MA-7531 [#2161] optimize event synchronization

GPU 3D clock will still enable/disable when video playback,
actually there is no 3D usage, to saving power we should
avoid 3D clock enable/disable. This patch optimize event
synchronization by not pass signal/sync_point to gpu when
current gcoHARDWARE is already sync'ed GPU and no command
buffer required.

Date: Apr 13, 2016
Signed-off-by: Richard Liu <r66033@freescale.com>
Signed-off-by: Meng Mingming <mingming.meng@nxp.com>

diff --git a/drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c b/drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c
index 6258f1f..7bd3b64 100644 (file)
--- a/drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c
+++ b/drivers/mxc/gpu-viv/hal/kernel/gc_hal_kernel.c
@@ -2688,6 +2688,12 @@ gckKERNEL_Dispatch(
                                               syncPoint));
                 break;
 
+            case gcvSYNC_POINT_SIGNAL:
+                syncPoint = gcmUINT64_TO_PTR(Interface->u.SyncPoint.syncPoint);
+
+                gcmkONERROR(gckOS_SignalSyncPoint(Kernel->os, syncPoint));
+                break;
+
             default:
                 gcmkONERROR(gcvSTATUS_INVALID_ARGUMENT);
                 break;