MA-10250: VPU Decoder: restart firmware if seq hdr is not found

if seq header is not found before user streamoff.
and user streamon again.
the firmware is keeping parsing seq state.
but it don't really parse seq header
because it has been canceled by streamoff.
The firmware needs driver trigger again to start parse next seq.
In this case, driver will send stop cmd to firmware first,
and send start cmd to firmware to restart parse seq header.
And the user need transfer spspps before I frame again.

Signed-off-by: ming_qian <ming.qian@nxp.com>

drivers/mxc/vpu_malone/vpu_b0.c

@@ -1275,9 +1275,6 @@ static int v4l2_ioctl_streamon(struct file *file,
 	if (ctx->hang_status) {
 		vpu_dbg(LVL_ERR, "%s(): not succeed and some instance are blocked\n", __func__);
 		return -EINVAL;
-	} else if (ctx->firmware_stopped) {
-		vpu_dbg(LVL_ERR, "%s(): not succeed and firmware is stopped\n", __func__);
-		return -EINVAL;
 	} else
 		return ret;
 }
@@ -1332,9 +1329,6 @@ static int v4l2_ioctl_streamoff(struct file *file,
 	if (ctx->hang_status) {
 		vpu_dbg(LVL_ERR, "%s(): not succeed and some instance are blocked\n", __func__);
 		return -EINVAL;
-	} else if (ctx->firmware_stopped) {
-		vpu_dbg(LVL_ERR, "%s(): not succeed and firmware is stopped\n", __func__);
-		return -EINVAL;
 	} else
 		return ret;
 }
@@ -2244,7 +2238,7 @@ static void vpu_api_event_handler(struct vpu_ctx *ctx, u_int32 uStrIdx, u_int32
 		return;
 	}
 
-	if (ctx->firmware_stopped) {
+	if (ctx->firmware_stopped && uEvent != VID_API_EVENT_START_DONE) {
 		vpu_dbg(LVL_ERR, "receive event: 0x%X after stopped, ignore it\n", uEvent);
 		return;
 	}
@@ -2253,10 +2247,13 @@ static void vpu_api_event_handler(struct vpu_ctx *ctx, u_int32 uStrIdx, u_int32
 
 	switch (uEvent) {
 	case VID_API_EVENT_START_DONE:
+		ctx->firmware_stopped = false;
+		ctx->firmware_finished = false;
 		break;
 	case VID_API_EVENT_STOPPED: {
 		vpu_dbg(LVL_INFO, "receive VID_API_EVENT_STOPPED\n");
 		ctx->firmware_stopped = true;
+		ctx->start_flag = true;
 		complete(&ctx->completion);//reduce possibility of abort hang if decoder enter stop automatically
 		complete(&ctx->stop_cmp);
 		}
@@ -2671,7 +2668,11 @@ static void vpu_api_event_handler(struct vpu_ctx *ctx, u_int32 uStrIdx, u_int32
 							i, bufstat[p_data_req->status]);
 		}
 		up(&This->drv_q_lock);
-		complete(&ctx->completion);
+		if (ctx->b_firstseq)
+			v4l2_vpu_send_cmd(ctx, ctx->str_index,
+					VID_API_CMD_STOP, 0, NULL);
+		else
+			complete(&ctx->completion);
 		}
 		break;
 	case VID_API_EVENT_RET_PING: