[Drivers] re-write serial framework.

components/drivers/include/drivers/serial.h

@@ -70,6 +70,15 @@
 #define RT_DEVICE_CTRL_CLR_INT          0x11    /* disable receive irq */
 #define RT_DEVICE_CTRL_GET_INT          0x12
 
+#define RT_SERIAL_EVENT_RX_IND          0x01    /* Rx indication */
+#define RT_SERIAL_EVENT_TX_DONE         0x02    /* Tx complete   */
+#define RT_SERIAL_EVENT_RX_DMADONE      0x03    /* Rx DMA transfer done */
+#define RT_SERIAL_EVENT_TX_DMADONE      0x04    /* Tx DMA transfer done */
+#define RT_SERIAL_EVENT_RX_TIMEOUT      0x05    /* Rx timeout    */
+
+#define RT_SERIAL_DMA_RX                0x01
+#define RT_SERIAL_DMA_TX                0x02
+
 #define RT_SERIAL_RX_INT                0x01
 #define RT_SERIAL_TX_INT                0x02
 
@@ -89,24 +98,51 @@
     PARITY_NONE,      /* No parity  */     \
     BIT_ORDER_LSB,    /* LSB first sent */ \
     NRZ_NORMAL,       /* Normal mode */    \
+    RT_SERIAL_RB_BUFSZ, /* Buffer size */  \
     0                                      \
 }
 
-struct serial_ringbuffer
-{
-    rt_uint8_t  buffer[RT_SERIAL_RB_BUFSZ];
-    rt_uint16_t put_index, get_index;
-};
-
 struct serial_configure
 {
     rt_uint32_t baud_rate;
+
     rt_uint32_t data_bits               :4;
     rt_uint32_t stop_bits               :2;
     rt_uint32_t parity                  :2;
     rt_uint32_t bit_order               :1;
     rt_uint32_t invert                  :1;
-    rt_uint32_t reserved                :20;
+	rt_uint32_t bufsz					:16;
+    rt_uint32_t reserved                :4;
+};
+
+/*
+ * Serial FIFO mode 
+ */
+struct rt_serial_rx_fifo
+{
+	/* software fifo */
+	rt_uint8_t *buffer;
+
+	rt_uint16_t put_index, get_index;
+};
+
+struct rt_serial_tx_fifo
+{
+	struct rt_completion completion;
+};
+
+/* 
+ * Serial DMA mode
+ */
+struct rt_serial_rx_dma
+{
+	rt_bool_t activated;
+};
+
+struct rt_serial_tx_dma
+{
+	rt_bool_t activated;
+	struct rt_data_queue data_queue;
 };
 
 struct rt_serial_device
@@ -116,14 +152,8 @@ struct rt_serial_device
     const struct rt_uart_ops *ops;
     struct serial_configure   config;
 
-    /* rx structure */
-    struct serial_ringbuffer *int_rx;
-    /* tx structure */
-    struct serial_ringbuffer *int_tx;
-
-    struct rt_data_queue      tx_dq;              /* tx dataqueue */
-    
-    volatile rt_bool_t        dma_flag;           /* dma transfer flag */
+	void *serial_rx;
+	void *serial_tx;
 };
 typedef struct rt_serial_device rt_serial_t;
 
@@ -138,14 +168,15 @@ struct rt_uart_ops
     int (*putc)(struct rt_serial_device *serial, char c);
     int (*getc)(struct rt_serial_device *serial);
 
-    rt_size_t (*dma_transmit)(struct rt_serial_device *serial, const char *buf, rt_size_t size);
+    rt_size_t (*dma_transmit)(struct rt_serial_device *serial, const rt_uint8_t *buf, rt_size_t size, int direction);
 };
 
-void rt_hw_serial_isr(struct rt_serial_device *serial);
-void rt_hw_serial_dma_tx_isr(struct rt_serial_device *serial);
+void rt_hw_serial_isr(struct rt_serial_device *serial, int event);
+
 rt_err_t rt_hw_serial_register(struct rt_serial_device *serial,
                                const char              *name,
                                rt_uint32_t              flag,
                                void                    *data);
 
 #endif
+