[DSS DRV][Bug Fix][PDK-5040]Display stops working if two pipelines are started back...

[processor-sdk/pdk.git] / packages / ti / drv / dss / src / drv / dctrl / dss_dctrlApi.c

diff --git a/packages/ti/drv/dss/src/drv/dctrl/dss_dctrlApi.c b/packages/ti/drv/dss/src/drv/dctrl/dss_dctrlApi.c
index cfb455142ab56885926f6381c05e754cae1db780..95f41856569bb78c91d5e6c7d9001f5be81e404a 100755 (executable)
--- a/packages/ti/drv/dss/src/drv/dctrl/dss_dctrlApi.c
+++ b/packages/ti/drv/dss/src/drv/dctrl/dss_dctrlApi.c
@@ -102,6 +102,9 @@ Dss_DctrlDrvGraphObj gDss_DctrlDrvGraphObj;
 Dss_DctrlDrvInfo gDss_DctrlDrvInfo;
 Dss_EvtMgrClientInfo gDss_DctrlEvtMgrClientInfo[DSS_DCTRL_EVT_MGR_MAX_CLIENTS];
 
+/* Semaphore to sync up back to back Fvid2_start() calls.
+   A VSYNC is needed between back to back Fvid2_start() calls. */
+SemaphoreP_Handle gDssStartSyncSem;
 /* ========================================================================== */
 /*                  Internal/Private Function Declarations                    */
 /* ========================================================================== */
@@ -335,6 +338,13 @@ int32_t Dss_dctrlDrvInit(const Dss_DctrlDrvInitParams *drvInitParams)
                 sizeof (Dss_DctrlDrvInitParams));
         }
     }
+    if (FVID2_SOK == retVal)
+    {
+        /* create semaphore */
+        SemaphoreP_Params_init(&semParams);
+        semParams.mode    = SemaphoreP_Mode_BINARY;
+        gDssStartSyncSem = SemaphoreP_create(1U, &semParams);
+    }
 
     return (retVal);
 }
@@ -422,6 +432,12 @@ int32_t Dss_dctrlDrvDeInit(void)
         pObj->isRegistered = FALSE;
     }
 
+    if (gDssStartSyncSem != NULL)
+    {
+        /* Delete semaphore */
+        (void)SemaphoreP_delete(gDssStartSyncSem);
+    }
+
     return (retVal);
 }
 
@@ -1991,6 +2007,12 @@ static void Dss_dctrlFuncCbFxn(const uint32_t *event,
         }
         else if(DSS_VP_EVENT_VSYNC == currEvent)
         {
+            /* Post crate sync semaphore */
+            if(NULL != gDssStartSyncSem)
+            {
+                /* Post the instance semaphore */
+                (void) SemaphoreP_post(gDssStartSyncSem);
+            }
             activePipeNum = 0U;
             for(j=0U; j<gDss_DctrlDrvInfo.numValidPipes; j++)
             {