66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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/*
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* Copyright 2018 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef __CROS_EC_UARTN_H
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#define __CROS_EC_UARTN_H
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#include "common.h"
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/*
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* Initialize the UART module.
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*/
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void uartn_init(uint8_t uart_num);
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/*
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* Re-enable the UART transmit interrupt.
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*
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* This also forces triggering a UART interrupt, if the transmit interrupt was
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* disabled.
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*/
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void uartn_tx_start(uint8_t uart_num);
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/* Disable the UART transmit interrupt. */
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void uartn_tx_stop(uint8_t uart_num, uint8_t sleep_ena);
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/* Flush the transmit FIFO. */
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void uartn_tx_flush(uint8_t uart_num);
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/* Return non-zero if there is room to transmit a character immediately. */
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int uartn_tx_ready(uint8_t uart_num);
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/* Return non-zero if a transmit is in progress. */
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int uartn_tx_in_progress(uint8_t uart_num);
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/* Return non-zero if the UART has a character available to read. */
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int uartn_rx_available(uint8_t uart_num);
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/*
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* Send a character to the UART data register.
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*
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* If the transmit FIFO is full, blocks until there is space.
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*
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* @param c Character to send.
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*/
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void uartn_write_char(uint8_t uart_num, char c);
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/*
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* Read one char from the UART data register.
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*
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* @return The character read.
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*/
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int uartn_read_char(uint8_t uart_num);
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/* Clear all data in the UART Rx FIFO */
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void uartn_clear_rx_fifo(int channel);
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/* Enable the UART Rx interrupt */
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void uartn_rx_int_en(uint8_t uart_num);
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/* Enable the UART Wake-up */
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void uartn_wui_en(uint8_t uart_num);
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/* Enable/disable Tx NXMIP (No Transmit In Progress) interrupt */
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void uartn_enable_tx_complete_int(uint8_t uart_num, uint8_t enable);
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#endif /* __CROS_EC_UARTN_H */
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