Kinetis:Serial No DMA Poll needed

arch/arm/src/kinetis/kinetis_serial.c

@@ -1038,7 +1038,6 @@ static void up_dma_shutdown(struct uart_dev_s *dev)
   kinetis_dmach_free(rxdma);
 
   priv->rxdma = NULL;
-
 }
 #endif
 
@@ -1253,6 +1252,22 @@ static int up_interrupts(int irq, void *context, FAR void *arg)
           uart_xmitchars(dev);
           handled = true;
         }
+
+#if defined(SERIAL_HAVE_DMA) && !defined(CONFIG_KINETIS_UARTFIFOS)
+      /* Check if the receiver has detected IDLE. If so
+       * then flush any partail data in the SW rx fifo.
+       */
+
+      if ((s1 & UART_S1_IDLE) != 0)
+        {
+          up_serialin(priv, KINETIS_UART_D_OFFSET);
+          up_dma_rxcallback(priv->rxdma, dev , false, 0);
+
+          /* Exit ASAP */
+
+          handled = false;
+        }
+#endif
     }
 
   return OK;
@@ -1674,6 +1689,9 @@ static void up_rxint(struct uart_dev_s *dev, bool enable)
 
 #ifndef CONFIG_SUPPRESS_SERIAL_INTS
       priv->ie |= UART_C2_RIE;
+#if defined(SERIAL_HAVE_DMA) && !defined(CONFIG_KINETIS_UARTFIFOS)
+      priv->ie |= UART_C2_RIE | UART_C2_ILIE;
+#endif
       up_setuartint(priv);
 #endif
     }
@@ -2069,70 +2087,6 @@ unsigned int kinetis_uart_serialinit(unsigned int first)
   return first;
 }
 
-/****************************************************************************
- * Name: kinetis_serial_dma_poll
- *
- * Description:
- *   Checks receive DMA buffers for received bytes that have not accumulated
- *   to the point where the DMA half/full interrupt has triggered.
- *
- *   This function should be called from a timer or other periodic context.
- *
- ****************************************************************************/
-
-#ifdef SERIAL_HAVE_DMA
-void kinetis_serial_dma_poll(void)
-{
-    irqstate_t flags;
-
-    flags = enter_critical_section();
-
-#ifdef CONFIG_KINETIS_UART0_RXDMA
-  if (g_uart0priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart0priv.rxdma, (void *)&g_uart0port, false, 0);
-    }
-#endif
-
-#ifdef CONFIG_KINETIS_UART1_RXDMA
-  if (g_uart1priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart1priv.rxdma, (void *)&g_uart1port, false, 0);
-    }
-#endif
-
-#ifdef CONFIG_KINETIS_UART2_RXDMA
-  if (g_uart2priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart2priv.rxdma, (void *)&g_uart2port, false, 0);
-    }
-#endif
-
-#ifdef CONFIG_KINETIS_UART3_RXDMA
-  if (g_uart3priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart3priv.rxdma, (void *)&g_uart3port, false, 0);
-    }
-#endif
-
-#ifdef CONFIG_KINETIS_UART4_RXDMA
-  if (g_uart4priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart4priv.rxdma, (void *)&g_uart4port, false, 0);
-    }
-#endif
-
-#ifdef CONFIG_KINETIS_UART5_RXDMA
-  if (g_uart5priv.rxdma != NULL)
-    {
-      up_dma_rxcallback(g_uart5priv.rxdma, (void *)&g_uart5port, false, 0);
-    }
-#endif
-
-  leave_critical_section(flags);
-}
-#endif
-
 /****************************************************************************
  * Name: up_putc
  *

arch/arm/src/kinetis/kinetis_uart.h

@@ -52,51 +52,5 @@
 #  endif
 #endif
 
-/****************************************************************************
- * Public Types
- ****************************************************************************/
-
-/****************************************************************************
- * Public Data
- ****************************************************************************/
-
-#ifndef __ASSEMBLY__
-
-#undef EXTERN
-#if defined(__cplusplus)
-#define EXTERN extern "C"
-extern "C"
-{
-#else
-#define EXTERN extern
-#endif
-
-/****************************************************************************
- * Public Functions Prototypes
- ****************************************************************************/
-
-/****************************************************************************
- * Name: kinetis_serial_dma_poll
- *
- * Description:
- *   Must be called periodically if any Kinetis UART is configured for DMA.
- *   The DMA callback is triggered for each fifo size/2 bytes, but this can
- *   result in some bytes being transferred but not collected if the incoming
- *   data is not a whole multiple of half the FIFO size.
- *
- *   May be safely called from either interrupt or thread context.
- *
- ****************************************************************************/
-
-#ifdef SERIAL_HAVE_DMA
-void kinetis_serial_dma_poll(void);
-#endif
-
-#undef EXTERN
-#if defined(__cplusplus)
-}
-#endif
-
-#endif /* __ASSEMBLY__ */
 #endif /* HAVE_UART_DEVICE && USE_SERIALDRIVER) */
 #endif /* __ARCH_ARM_SRC_KINETIS_KINETIS_UART_H */