1 /* 2 * Copyright (c) 2016 Open-RnD Sp. z o.o. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /** 8 * @brief Driver for UART port on STM32 family processor. 9 * 10 */ 11 12 #ifndef ZEPHYR_DRIVERS_SERIAL_UART_STM32_H_ 13 #define ZEPHYR_DRIVERS_SERIAL_UART_STM32_H_ 14 15 #include <drivers/pinmux.h> 16 17 /* device config */ 18 struct uart_stm32_config { 19 struct uart_device_config uconf; 20 /* clock subsystem driving this peripheral */ 21 struct stm32_pclken pclken; 22 /* initial hardware flow control, 1 for RTS/CTS */ 23 bool hw_flow_control; 24 /* initial parity, 0 for none, 1 for odd, 2 for even */ 25 int parity; 26 const struct soc_gpio_pinctrl *pinctrl_list; 27 size_t pinctrl_list_size; 28 #if defined(CONFIG_PM) \ 29 && !defined(CONFIG_UART_INTERRUPT_DRIVEN) \ 30 && !defined(CONFIG_UART_ASYNC_API) 31 uart_irq_config_func_t irq_config_func; 32 #endif 33 }; 34 35 #ifdef CONFIG_UART_ASYNC_API 36 struct uart_dma_stream { 37 const struct device *dma_dev; 38 uint32_t dma_channel; 39 struct dma_config dma_cfg; 40 uint8_t priority; 41 bool src_addr_increment; 42 bool dst_addr_increment; 43 int fifo_threshold; 44 struct dma_block_config blk_cfg; 45 uint8_t *buffer; 46 size_t buffer_length; 47 size_t offset; 48 volatile size_t counter; 49 int32_t timeout; 50 struct k_work_delayable timeout_work; 51 bool enabled; 52 }; 53 #endif 54 55 /* driver data */ 56 struct uart_stm32_data { 57 /* Baud rate */ 58 uint32_t baud_rate; 59 /* clock device */ 60 const struct device *clock; 61 #ifdef CONFIG_UART_INTERRUPT_DRIVEN 62 uart_irq_callback_user_data_t user_cb; 63 void *user_data; 64 #endif 65 66 #ifdef CONFIG_UART_ASYNC_API 67 const struct device *uart_dev; 68 uart_callback_t async_cb; 69 void *async_user_data; 70 struct uart_dma_stream dma_rx; 71 struct uart_dma_stream dma_tx; 72 uint8_t *rx_next_buffer; 73 size_t rx_next_buffer_len; 74 #endif 75 #ifdef CONFIG_PM 76 bool tx_poll_stream_on; 77 bool tx_int_stream_on; 78 bool pm_constraint_on; 79 #endif 80 }; 81 82 #endif /* ZEPHYR_DRIVERS_SERIAL_UART_STM32_H_ */ 83
