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/*

 * SPDX-License-Identifier: BSD-2-Clause

 *

 * Copyright (C) 2013 embedded brains GmbH & Co. KG

 *

 * 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_REGS_H

#define LIBBSP_ARM_XILINX_ZYNQ_UART_REGS_H


#include <bsp/utility.h>


#define ZYNQ_UART_DEFAULT_BAUD 115200


#define ZYNQ_UART_FIFO_DEPTH 64


typedef struct zynq_uart {

    uint32_t control;

#define ZYNQ_UART_CONTROL_STPBRK BSP_BIT32(8)

#define ZYNQ_UART_CONTROL_STTBRK BSP_BIT32(7)

#define ZYNQ_UART_CONTROL_RSTTO BSP_BIT32(6)

#define ZYNQ_UART_CONTROL_TXDIS BSP_BIT32(5)

#define ZYNQ_UART_CONTROL_TXEN BSP_BIT32(4)

#define ZYNQ_UART_CONTROL_RXDIS BSP_BIT32(3)

#define ZYNQ_UART_CONTROL_RXEN BSP_BIT32(2)

#define ZYNQ_UART_CONTROL_TXRES BSP_BIT32(1)

#define ZYNQ_UART_CONTROL_RXRES BSP_BIT32(0)

    uint32_t mode;

#define ZYNQ_UART_MODE_CHMODE(val) BSP_FLD32(val, 8, 9)

#define ZYNQ_UART_MODE_CHMODE_GET(reg) BSP_FLD32GET(reg, 8, 9)

#define ZYNQ_UART_MODE_CHMODE_SET(reg, val) BSP_FLD32SET(reg, val, 8, 9)

#define ZYNQ_UART_MODE_CHMODE_NORMAL 0x00U

#define ZYNQ_UART_MODE_CHMODE_AUTO_ECHO 0x01U

#define ZYNQ_UART_MODE_CHMODE_LOCAL_LOOPBACK 0x02U

#define ZYNQ_UART_MODE_CHMODE_REMOTE_LOOPBACK 0x03U

#define ZYNQ_UART_MODE_NBSTOP(val) BSP_FLD32(val, 6, 7)

#define ZYNQ_UART_MODE_NBSTOP_GET(reg) BSP_FLD32GET(reg, 6, 7)

#define ZYNQ_UART_MODE_NBSTOP_SET(reg, val) BSP_FLD32SET(reg, val, 6, 7)

#define ZYNQ_UART_MODE_NBSTOP_STOP_1 0x00U

#define ZYNQ_UART_MODE_NBSTOP_STOP_1_5 0x01U

#define ZYNQ_UART_MODE_NBSTOP_STOP_2 0x02U

#define ZYNQ_UART_MODE_PAR(val) BSP_FLD32(val, 3, 5)

#define ZYNQ_UART_MODE_PAR_GET(reg) BSP_FLD32GET(reg, 3, 5)

#define ZYNQ_UART_MODE_PAR_SET(reg, val) BSP_FLD32SET(reg, val, 3, 5)

#define ZYNQ_UART_MODE_PAR_EVEN 0x00U

#define ZYNQ_UART_MODE_PAR_ODD 0x01U

#define ZYNQ_UART_MODE_PAR_SPACE 0x02U

#define ZYNQ_UART_MODE_PAR_MARK 0x03U

#define ZYNQ_UART_MODE_PAR_NONE 0x04U

#define ZYNQ_UART_MODE_CHRL(val) BSP_FLD32(val, 1, 2)

#define ZYNQ_UART_MODE_CHRL_GET(reg) BSP_FLD32GET(reg, 1, 2)

#define ZYNQ_UART_MODE_CHRL_SET(reg, val) BSP_FLD32SET(reg, val, 1, 2)

#define ZYNQ_UART_MODE_CHRL_8 0x00U

#define ZYNQ_UART_MODE_CHRL_7 0x02U

#define ZYNQ_UART_MODE_CHRL_6 0x03U

#define ZYNQ_UART_MODE_CLKS BSP_BIT32(0)

    uint32_t irq_en;

    uint32_t irq_dis;

    uint32_t irq_mask;

    uint32_t irq_sts;

#define ZYNQ_UART_TOVR BSP_BIT32(12)

#define ZYNQ_UART_TNFUL BSP_BIT32(11)

#define ZYNQ_UART_TTRIG BSP_BIT32(10)

#define ZYNQ_UART_DMSI BSP_BIT32(9)

#define ZYNQ_UART_TIMEOUT BSP_BIT32(8)

#define ZYNQ_UART_PARE BSP_BIT32(7)

#define ZYNQ_UART_FRAME BSP_BIT32(6)

#define ZYNQ_UART_ROVR BSP_BIT32(5)

#define ZYNQ_UART_TFUL BSP_BIT32(4)

#define ZYNQ_UART_TEMPTY BSP_BIT32(3)

#define ZYNQ_UART_RFUL BSP_BIT32(2)

#define ZYNQ_UART_REMPTY BSP_BIT32(1)

#define ZYNQ_UART_RTRIG BSP_BIT32(0)

    uint32_t baud_rate_gen;

#define ZYNQ_UART_BAUD_RATE_GEN_CD(val) BSP_FLD32(val, 0, 15)

#define ZYNQ_UART_BAUD_RATE_GEN_CD_GET(reg) BSP_FLD32GET(reg, 0, 15)

#define ZYNQ_UART_BAUD_RATE_GEN_CD_SET(reg, val) BSP_FLD32SET(reg, val, 0, 15)

    uint32_t rx_timeout;

#define ZYNQ_UART_RX_TIMEOUT_RTO(val) BSP_FLD32(val, 0, 7)

#define ZYNQ_UART_RX_TIMEOUT_RTO_GET(reg) BSP_FLD32GET(reg, 0, 7)

#define ZYNQ_UART_RX_TIMEOUT_RTO_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)

    uint32_t rx_fifo_trg_lvl;

#define ZYNQ_UART_RX_FIFO_TRG_LVL_RTRIG(val) BSP_FLD32(val, 0, 5)

#define ZYNQ_UART_RX_FIFO_TRG_LVL_RTRIG_GET(reg) BSP_FLD32GET(reg, 0, 5)

#define ZYNQ_UART_RX_FIFO_TRG_LVL_RTRIG_SET(reg, val) BSP_FLD32SET(reg, val, 0, 5)

    uint32_t modem_ctrl;

#define ZYNQ_UART_MODEM_CTRL_FCM BSP_BIT32(5)

#define ZYNQ_UART_MODEM_CTRL_RTS BSP_BIT32(1)

#define ZYNQ_UART_MODEM_CTRL_DTR BSP_BIT32(0)

    uint32_t modem_sts;

#define ZYNQ_UART_MODEM_STS_FCMS BSP_BIT32(8)

#define ZYNQ_UART_MODEM_STS_DCD BSP_BIT32(7)

#define ZYNQ_UART_MODEM_STS_RI BSP_BIT32(6)

#define ZYNQ_UART_MODEM_STS_DSR BSP_BIT32(5)

#define ZYNQ_UART_MODEM_STS_CTS BSP_BIT32(4)

#define ZYNQ_UART_MODEM_STS_DDCD BSP_BIT32(3)

#define ZYNQ_UART_MODEM_STS_TERI BSP_BIT32(2)

#define ZYNQ_UART_MODEM_STS_DDSR BSP_BIT32(1)

#define ZYNQ_UART_MODEM_STS_DCTS BSP_BIT32(0)

    uint32_t channel_sts;

#define ZYNQ_UART_CHANNEL_STS_TNFUL BSP_BIT32(14)

#define ZYNQ_UART_CHANNEL_STS_TTRIG BSP_BIT32(13)

#define ZYNQ_UART_CHANNEL_STS_FDELT BSP_BIT32(12)

#define ZYNQ_UART_CHANNEL_STS_TACTIVE BSP_BIT32(11)

#define ZYNQ_UART_CHANNEL_STS_RACTIVE BSP_BIT32(10)

#define ZYNQ_UART_CHANNEL_STS_TFUL BSP_BIT32(4)

#define ZYNQ_UART_CHANNEL_STS_TEMPTY BSP_BIT32(3)

#define ZYNQ_UART_CHANNEL_STS_RFUL BSP_BIT32(2)

#define ZYNQ_UART_CHANNEL_STS_REMPTY BSP_BIT32(1)

#define ZYNQ_UART_CHANNEL_STS_RTRIG BSP_BIT32(0)

    uint32_t tx_rx_fifo;

#define ZYNQ_UART_TX_RX_FIFO_FIFO(val) BSP_FLD32(val, 0, 7)

#define ZYNQ_UART_TX_RX_FIFO_FIFO_GET(reg) BSP_FLD32GET(reg, 0, 7)

#define ZYNQ_UART_TX_RX_FIFO_FIFO_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)

    uint32_t baud_rate_div;

#define ZYNQ_UART_BAUD_RATE_DIV_BDIV(val) BSP_FLD32(val, 0, 7)

#define ZYNQ_UART_BAUD_RATE_DIV_BDIV_GET(reg) BSP_FLD32GET(reg, 0, 7)

#define ZYNQ_UART_BAUD_RATE_DIV_BDIV_SET(reg, val) BSP_FLD32SET(reg, val, 0, 7)

    uint32_t flow_delay;

#define ZYNQ_UART_FLOW_DELAY_FDEL(val) BSP_FLD32(val, 0, 5)

#define ZYNQ_UART_FLOW_DELAY_FDEL_GET(reg) BSP_FLD32GET(reg, 0, 5)

#define ZYNQ_UART_FLOW_DELAY_FDEL_SET(reg, val) BSP_FLD32SET(reg, val, 0, 5)

    uint32_t reserved_3c[2];

    uint32_t tx_fifo_trg_lvl;

#define ZYNQ_UART_TX_FIFO_TRG_LVL_TTRIG(val) BSP_FLD32(val, 0, 5)

#define ZYNQ_UART_TX_FIFO_TRG_LVL_TTRIG_GET(reg) BSP_FLD32GET(reg, 0, 5)

#define ZYNQ_UART_TX_FIFO_TRG_LVL_TTRIG_SET(reg, val) BSP_FLD32SET(reg, val, 0, 5)

} zynq_uart;


void zynq_uart_initialize(volatile zynq_uart *regs);


int zynq_uart_read_char_polled(volatile zynq_uart *regs);


void zynq_uart_write_char_polled(volatile zynq_uart *regs, char c);


void zynq_uart_reset_tx_flush(volatile zynq_uart *regs);


uint32_t zynq_uart_input_clock(void);


uint32_t zynq_uart_calculate_baud(

  uint32_t  desired_baud,

  uint32_t  mode_clks,

  uint32_t *cd_ptr,

  uint32_t *bdiv_ptr

);


#endif /* LIBBSP_ARM_XILINX_ZYNQ_UART_REGS_H */

zynq_uart_reset_tx_flush
void zynq_uart_reset_tx_flush(volatile zynq_uart *regs)
Definition: zynq-uart-polled.c:160

zynq_uart_input_clock
uint32_t zynq_uart_input_clock(void)
Returns the Zynq UART input clock frequency in Hz.
Definition: zynq-uart-input-clock.c:41

zynq_uart_calculate_baud
uint32_t zynq_uart_calculate_baud(uint32_t desired_baud, uint32_t mode_clks, uint32_t *cd_ptr, uint32_t *bdiv_ptr)
Calculates the clock and baud divisor of the best approximation of the desired baud.
Definition: zynq-uart-polled.c:60

utility.h
This header file provides utility macros for BSPs.

control
Definition: intercom.c:87

zynq_uart
Definition: zynq-uart-regs.h:55