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/**
* @file
* @ingroup zynq_uart
* @brief UART support.
*/
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2013, XXX embedded brains GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef LIBBSP_ARM_XILINX_ZYNQ_UART_H
#define LIBBSP_ARM_XILINX_ZYNQ_UART_H
#include <rtems/termiostypes.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @defgroup zynq_uart UART Support
* @ingroup RTEMSBSPsARMZynq
* @brief UART Support
*
* This driver operates an instance of the Cadence UART present in the
* family of Xilinx Zynq SoCs.
*/
typedef struct {
rtems_termios_device_context base;
volatile struct zynq_uart *regs;
bool transmitting;
rtems_vector_number irq;
} zynq_uart_context;
extern const rtems_termios_device_handler zynq_uart_handler;
#define ZYNQ_UART_DEFAULT_BAUD 115200
void zynq_uart_initialize(rtems_termios_device_context *base);
int zynq_uart_read_polled(rtems_termios_device_context *base);
void zynq_uart_write_polled(
rtems_termios_device_context *base,
char c
);
/**
* Flush TX FIFO and wait until it is empty. Used in bsp_reset.
*/
void zynq_uart_reset_tx_flush(zynq_uart_context *ctx);
int zynq_cal_baud_rate(
uint32_t baudrate,
uint32_t* brgr,
uint32_t* bauddiv,
uint32_t modereg
);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_ARM_XILINX_ZYNQ_UART_H */
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