1 /* 2 * Copyright (c) 2022 Nanjing Xiaoxiongpai Intelligent Technology Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef _STM32MP1_UART_HW_H_ 17 #define _STM32MP1_UART_HW_H_ 18 19 #include <stdint.h> 20 21 #include "osal.h" 22 #include "osal_io.h" 23 24 #include "KRecvBuf.h" 25 26 #define TX_BUF_SIZE (64) 27 #define RX_BUF_SIZE (4096) 28 #define UART_IRQ_NAME_SIZE (16) 29 30 struct Mp1xxUart; 31 32 #define UART_HW_PARITY_NONE (0) 33 #define UART_HW_PARITY_ODD (1) 34 #define UART_HW_PARITY_EVEN (2) 35 #define UART_HW_PARITY_MARK (3) 36 #define UART_HW_PARITY_SPACE (4) 37 38 /* data bit */ 39 #define UART_HW_DATABIT_8 (0) 40 #define UART_HW_DATABIT_7 (1) 41 #define UART_HW_DATABIT_6 (2) 42 #define UART_HW_DATABIT_5 (3) 43 44 /* stop bit */ 45 #define UART_HW_STOPBIT_1 (0) 46 #define UART_HW_STOPBIT_1P5 (1) 47 #define UART_HW_STOPBIT_2 (2) 48 49 struct Mp1xxUartRxCtl { 50 char *fifo; 51 KRecvBuf rx_krb; // 输入缓冲区 52 OSAL_DECLARE_SEMAPHORE(rx_sem); 53 uint32_t (*stm32mp1_uart_recv_hook)(struct Mp1xxUart *uart, char *buf, uint32_t size); 54 }; 55 56 struct Mp1xxUart { 57 uint32_t num; // 当前串口编号 58 59 void volatile *base; // 虚拟地址 60 uint32_t phy_base; // 物理地址 61 uint32_t reg_step; // 映射大小 62 63 uint32_t irq_num; // 中断号 64 char irq_name[UART_IRQ_NAME_SIZE]; // 中断名 65 66 OSAL_DECLARE_SPINLOCK(lock); // 自旋锁 67 68 uint32_t clock_rate; // 时钟源频率 69 char *clock_source; // 时钟源 70 71 bool debug_uart; // 是否作为调试串口 72 73 bool fifo_en; // fifo模式 74 75 uint32_t baudrate; // 波特率 76 77 // state 78 #define UART_STATE_NOT_OPENED (0) 79 #define UART_STATE_OPENING (1) 80 #define UART_STATE_USEABLE (2) 81 #define UART_STATE_SUSPENED (3) 82 int state; // 设备状态 83 int open_count; // 打开数量 84 85 // flags 86 #define UART_FLG_DMA_RX (1 << 0) 87 #define UART_FLG_DMA_TX (1 << 1) 88 #define UART_FLG_RD_BLOCK (1 << 2) 89 uint32_t flags; 90 91 // tx 92 char tx_buf[TX_BUF_SIZE]; 93 94 // rx 95 uint32_t rx_buf_size; 96 struct Mp1xxUartRxCtl rx_ctl; 97 98 void *priv; 99 }; 100 101 extern void Mp1xxUartHwPutc(void *base, char c); 102 extern void Mp1xxUartHwPuts(void *base, char *s, uint32_t len); 103 104 extern uint32_t Mp1xxUartIrqHandler(uint32_t irq, void *data); 105 106 extern void Mp1xxUartDump(struct Mp1xxUart *uart); 107 108 extern int32_t Mp1xxUartHwFifoEnable(struct Mp1xxUart *uart, int enable); 109 extern int32_t Mp1xxUartHwRxEnable(struct Mp1xxUart *uart, int enable); 110 extern int32_t Mp1xxUartHwEnable(struct Mp1xxUart *uart, int enable); 111 extern int32_t Mp1xxUartHwDataBits(struct Mp1xxUart *uart, uint32_t bits); 112 extern int32_t Mp1xxUartHwStopBits(struct Mp1xxUart *uart, uint32_t bits); 113 extern int32_t Mp1xxUartHwParity(struct Mp1xxUart *uart, uint32_t parity); 114 extern int32_t Mp1xxUartHwBaudrate(struct Mp1xxUart *uart, uint32_t baudrate); 115 116 #endif 117