#ifndef __DRV_USART_H__
#define __DRV_USART_H__

#include "rkfifo.h"
#include "hpm_uart_drv.h"
#include "hpm_dmamux_drv.h"
#include "hpm_dma_drv.h"
#include "stdint.h"

/* ========== 结构体定义 ========== */
struct _uart_config {
    UART_Type *uart_base;           /* UART基地址 */
    uart_intr_enable_t uart_irq_mask; /* UART中断掩码 */
    uint8_t uart_irq_num;           /* 中断号 */ 
   
    /* DMA配置 */
    DMA_Type *dma_base;             /* DMA控制器基地址 */
    DMAMUX_Type *dma_mux_base;      /* DMA MUX */
    uint8_t dma_enable;             /* DMA 使能  */
    uint8_t dma_channel;            /* DMA通道 */
    uint8_t dma_irq_num;            /* DMA中断号 */
    uint8_t dma_request;            /* DMA请求源 */
    
    /* 缓冲区 */
    uint8_t *tx_fifo_buff;          /* TX FIFO缓冲区 */
    uint32_t tx_fifo_buff_size;     /* TX FIFO大小 */
    uint8_t *rx_fifo_buff;          /* RX FIFO缓冲区 */
    uint32_t rx_fifo_buff_size;     /* RX FIFO大小 */
    
    /* DMA缓冲区 */
    uint8_t *dma_tx_buff;           /* DMA发送缓冲区 */
    uint32_t dma_tx_buff_size;      /* DMA发送缓冲区大小 */
    
    /* 内部使用 */
    rkfifo_t tx_fifo;               /* TX FIFO */
    rkfifo_t rx_fifo;               /* RX FIFO */

};

struct _uart_ops {
    int (*init)(uint32_t baudrate);
    uint32_t (*read)(void *data, uint32_t len);
    uint32_t (*write)(const void *data, uint32_t len);
};

struct _uart_device {
    struct _uart_config *config;
    struct _uart_ops *ops;
};
struct _uart_device *uart_find(const char *name);


extern int uart_test_main(int test_mode);
#endif