50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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/*
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* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
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*
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* This document is the property of Apple Computer, Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Computer, Inc.
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*/
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#ifndef __DRIVERS_UART_H
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#define __DRIVERS_UART_H
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#include <sys/types.h>
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__BEGIN_DECLS
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/*
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* High-level UART interface.
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*/
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int uart_init(void);
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int uart_getc(int port, bool wait);
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int uart_puts(int port, const char *s);
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int uart_putc(int port, char c);
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int uart_send_break(int port, bool enable);
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/*
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* Low-level UART primitives required by the drivers/uart module.
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*/
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enum uart_parity {
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PARITY_NONE,
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PARITY_ODD,
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PARITY_EVEN
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};
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int uart_hw_init(u_int32_t port, u_int32_t baudrate);
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int uart_hw_getc(u_int32_t port);
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int uart_hw_putc(u_int32_t port, char c);
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/* optional, backdoor for tweaking UART config */
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int uart_hw_init_extended(u_int32_t port, u_int32_t baudrate, u_int32_t databits,
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enum uart_parity parity, u_int32_t stopbits);
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/* set interrupt mode on/off, explicit buffer size */
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int uart_hw_set_rx_buf(u_int32_t port, bool interrupt, size_t buffer_len);
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__END_DECLS
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#endif /* __DRIVERS_UART_H */
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