display: driver: default post start if SBLUA DMA exist

Keep posted start as default configuration in driver
if SBLUT is supported on target.
Do not allow HAL to override driver's default frame trigger mode.

Change-Id: I46ad5c87abfb05446592b0e497a23a3a3fc62ca7
Signed-off-by: GG Hou <quic_renjhou@quicinc.com>

msm/sde/sde_encoder.c

@@ -5248,6 +5248,13 @@ struct drm_encoder *sde_encoder_init(struct drm_device *dev, struct msm_display_
 			"input handler registration failed, rc = %d\n", ret);
 	}
 
+	/* Keep posted start as default configuration in driver
+	   if SBLUT is supported on target. Do not allow HAL to
+	   override driver's default frame trigger mode.
+	*/
+	if(sde_kms->catalog->dma_cfg.reg_dma_blks[REG_DMA_TYPE_SB].valid)
+		sde_enc->frame_trigger_mode = FRAME_DONE_WAIT_POSTED_START;
+
 	mutex_init(&sde_enc->rc_lock);
 	kthread_init_delayed_work(&sde_enc->delayed_off_work,
 			sde_encoder_off_work);